Therapy guide · medical education
Dandruff & seborrheic dermatitis: the full therapy pathway
The rare condition where the drugstore shelf genuinely is the first-line therapy — if you use it like medicine instead of shampoo. From the antifungal ladder to what dermatologists prescribe when the flakes are actually inflammation.
Before anything else
Not everyone should start at the bottom of this pathway. These presentations are reasons to
see a clinician without waiting out an over-the-counter trial first.
- A child with scaly scalp patches, broken hairs or hair loss See a dermatologist soon
Tinea capitis — ringworm of the scalp — is the likeliest explanation at that age, and it needs oral antifungal treatment promptly. Dandruff shampoos cannot reach it, and delayed treatment can leave scarring and permanent hair loss.
- Weeping, crusting, tenderness, or swollen lymph nodes See a dermatologist soon
Scratched, broken seborrheic skin invites bacterial infection, and infected dermatitis needs different treatment than the underlying condition. Honey-coloured crust and tenderness are the classic signs.
- Severe seborrheic dermatitis that appeared abruptly, or keeps escalating See a dermatologist soon
Explosive or unusually extensive disease has a documented association with weakened immunity and some neurological conditions. Most severe dandruff means nothing of the kind — but sudden dramatic onset is a legitimate reason for a clinician to look at the whole picture, not just the scalp.
- Thick, matted, plate-like scale binding tufts of hair Worth a clinician visit
Heavy adherent scale (pityriasis amiantacea) is a presentation, not a diagnosis — psoriasis, severe seborrheic dermatitis and infection can all produce it, and un-picking which one, literally and diagnostically, is clinician work.
- Flaking plus sharply-edged plaques on elbows, knees or nails Worth a clinician visit
That combination suggests the psoriasis end of the spectrum, which has a different treatment logic and a much lower over-the-counter ceiling — its own page on this site explains why.
Which part of this pathway is yours?
Two treatment branches, a maintenance matrix, and a couple of exits to a clinician live on this page. Six questions, about a minute — including the ones that catch the lookalikes a shampoo can't treat.
Answers stay in this browser. Nothing is sent anywhere, and one button clears them.
One thing to be clear about. This places you on the map rather than diagnosing you. Scalps are genuinely hard to self-inspect, and the psoriasis-versus-seborrheic-dermatitis call is sometimes hard even in clinic — a persistent mismatch between these descriptions and your mirror is itself worth an appointment.
What this looks like
Clinicians place this condition along a spectrum — how much flake, how much inflammation, and how far beyond the scalp it has travelled. Where you sit on it decides whether the shampoo aisle is the whole answer or the supporting act.
Ordinary dandruff
Flaking and some itch, with a scalp that looks normal underneath — the mild end, and by far the commonest.
What it looks like: White-to-yellowish flakes in the hair and on shoulders, itch that is annoying rather than maddening, no visible redness. Often worse in winter and with stress. This presentation is squarely over-the-counter territory.
Seborrheic dermatitis of the scalp
The inflamed version — the scalp itself is pink, irritated, and shedding greasy scale.
What it looks like: Larger, oilier, yellow-tinged scale over patches of visibly irritated scalp; itch that intrudes. On deeper skin tones the inflammation often reads as lighter or darker patches rather than red ones, and petal-shaped pale areas along the hairline are a recognised pattern.
Face, beard and body involvement
The same process on the oil-rich zones beyond the scalp — where treatment choices change because the skin is thinner.
What it looks like: Flaky pink patches in the eyebrows, the folds beside the nose, in and behind the ears, under a beard, occasionally mid-chest. Frequently misread as dry skin and moisturised for years — the tell is the location: it maps to oil, not to dryness.
Severe, sudden or atypical
Extensive, fierce or abrupt-onset disease — the presentation that earns a clinician early.
What it looks like: Thick adherent scale across much of the scalp, crusting, weeping, or seborrheic dermatitis that went from nothing to dramatic in weeks. Severe sudden disease can accompany a strained immune system or certain neurological conditions, which is precisely why it warrants more than a stronger shampoo.
Three things that change the plan regardless of severity
Your wash schedule and hair type
Most medicated-shampoo instructions quietly assume frequent washing — unrealistic and genuinely damaging for many textured, braided, or protective-styled hair types. That mismatch, not the active ingredient, is why treatment 'fails' for a lot of people. The plan has to fit the hair: lower-frequency washing with longer contact time, applying the shampoo to the scalp rather than the lengths, and leave-on options where washing is weekly or less. A clinician who asks about your hair practices before prescribing is doing it right.
Beards
A beard is scalp-adjacent terrain: oil, warmth, and yeast. Beard flaking responds to the same antifungal logic — lathering the medicated shampoo through the beard during its contact time — and it is a common reason facial seborrheic dermatitis persists despite a well-treated scalp.
Immune status and neurological conditions
Severe or explosively sudden seborrheic dermatitis is more common with weakened immunity — including untested HIV — and with Parkinson's disease. This is not a reason for alarm over ordinary dandruff; it is a reason that dramatic, sudden, extensive disease deserves a proper medical look rather than the next shampoo up the shelf.
Babies
Cradle cap is the infant version and plays by different rules: it is harmless, usually resolves on its own within months, and is managed with oil-softening and gentle brushing rather than medicated shampoo. Nothing on this page's treatment tiers is written for infants — that conversation belongs with a paediatric clinician.
What else it could be
- Scalp psoriasis — Thicker, drier, silvery scale in sharply-bounded plaques, often with plaques elsewhere — elbows, knees, nails. The overlap zone is real enough to have a name (sebopsoriasis), and psoriasis has its own page on this site with a very different ceiling.
- Tinea capitis — Mainly in children: scaly patches with broken hairs or bald spots, sometimes swollen glands. A true dermatophyte infection that needs oral antifungal treatment — a shampoo will not cure it, and delay costs hair.
- Genuinely dry scalp — Uncommon, and usually part of dry skin generally. Fine, small, dry flakes without the greasy quality — and it improves with gentler washing, which dandruff conspicuously does not.
- Product build-up and irritation — Styling residue can flake, and strong products can irritate a scalp into shedding. The history tells: flaking that tracks a product change is a simplification question, not an antifungal one — and the contact dermatitis pathway covers that logic.
The most useful home observation is the character of the scale: greasy, yellowish, oil-zone-dwelling scale points here; thick silvery plaques point to psoriasis; a child's patchy scale with hair loss points to tinea and a prompt appointment. Bring the description — or better, a photo — rather than a guess.
Why it happens
Every scalp hosts Malassezia — a yeast that lives on skin oil everywhere humans have oil glands. Most scalps ignore it. In dandruff-prone ones, the yeast's by-products irritate the skin into shedding cells faster than they can be shed invisibly, so they clump into visible flakes. Push the same process further — more inflammation, not just more shedding — and you get seborrheic dermatitis: pink-to-red, greasy, yellowish scale that doesn't stay on the scalp, colonising the eyebrows, the creases beside the nose, the ears, sometimes the mid-chest. Same yeast, same oily terrain, different volume settings. Two consequences follow. First, treatment is antifungal at its core — you are managing an ecosystem, not scrubbing off flakes, which is why 'exfoliating' the scalp harder never works. Second, the yeast comes back because it lives there; control is the honest goal, and maintenance is part of the treatment rather than an epilogue.
Anyone brushing flakes off their shoulders; anyone whose 'dry scalp' has ignored every moisturising shampoo because it was never dry; anyone with stubborn flaking in the eyebrows or beside the nose who hasn't connected it to their scalp; and anyone whose beard has started snowing. It is also for the person who tried a dandruff shampoo once, for one week, rinsed it off like ordinary shampoo, and reasonably concluded it doesn't work — because used that way, it mostly doesn't.
Orientation, not diagnosis. This page maps flaking driven by the Malassezia process. Some scalps flake for other reasons: psoriasis builds thicker, silvery, sharply-edged plaques and has its own page here; a genuinely dry scalp (rare, usually alongside dry skin everywhere) lacks the greasy quality; and in children, patchy scale with hair loss raises tinea capitis — a true fungal infection needing oral treatment, not a shampoo. If the description on this page keeps not fitting, that mismatch is the useful finding.
Everything here is available without a prescription The over-the-counter pathway
This page is the shampoo aisle's finest hour on this entire site. Antifungal shampoos are not a stopgap before real treatment — they are the first-line treatment, backed by a dedicated over-the-counter drug monograph and a Cochrane review's worth of trial evidence. Ketoconazole, zinc pyrithione, selenium sulfide and coal tar all carry genuine anti-Malassezia or anti-scale credentials, and most dandruff surrenders to any of them used properly. The fine print is the word 'properly': these are drugs delivered in shampoo format, and they fail in predictable, fixable ways — rinsed off in thirty seconds, used once then abandoned, or prescribed by the bottle's marketing to a wash schedule that doesn't fit the hair on the head in question. The ceiling exists too: visible inflammation, facial involvement, and the severe presentations climb past the aisle. But uniquely on this site, the honest instruction is not 'know when to see someone' first — it is 'use the aisle correctly, because it will probably work'.
Appropriate for: Flaking and itch with a normal-looking scalp underneath — which is most dandruff — plus mild scalp seborrheic dermatitis, beard flaking, and maintenance after prescription treatment has calmed a flare.
Unusually for this site, the sequence below is not the warm-up before real treatment — it is the real treatment, the same first line a clinician would start. The difference between the people it works for and the people it fails is almost entirely technique and patience, which is what these steps are actually teaching.
The rule that decides everything: contact time
A medicated shampoo is a drug with a delivery problem — it only treats while it is touching the scalp. Rinsed in thirty seconds, the most evidence-backed active on the shelf performs like coloured water; left for five minutes, it performs like the medicine the trials tested. Nothing else on this pathway — the choice of active, the brand, the price — moves the outcome as much as those minutes.
Four rules before the first bottle
- The active list, not the front label, is the product — find ketoconazole, zinc pyrithione, selenium sulfide, coal tar or salicylic acid on it.
- Five minutes of scalp contact per wash. Set a timer; everyone overestimates.
- Four weeks is one trial. Verdicts before that are noise.
- A red, weeping, or suddenly severe scalp — or a child's patchy, hair-losing one — skips this pathway and gets seen.
Answer as you go and the chart tracks where you are. Nothing is sent anywhere.
- TodayYou are here
Pick one antifungal and learn the technique
One evidence-backed active, delivered like the drug it is.
What this step involves
Morning
- Choose a single active to start Ketoconazole 1% if itch or early redness rides along with the flakes; zinc pyrithione as the gentle daily-driver otherwise. One — the ladder works by fair trials, not ensembles.
Evening
- Rehearse the wash that counts Wet hair, lather worked into the scalp with fingertips (through the beard too, if it flakes), then five timed minutes while the rest of the shower happens. Rinse, condition the lengths as normal.
Why this step: Antifungal shampoo is the guideline first line for this condition, and the Cochrane evidence behind ketoconazole was generated with real contact time — the trials treated the scalp, not the drain. Recreating the trial conditions is what entitles you to expect the trial results.
What's normal: Medicated shampoos are drying to hair fibre; conditioning the lengths afterwards is fully compatible with treatment and keeps the routine sustainable.
Ready for the next step?
Is one active chosen, and does your wash routine actually include the five minutes?
Yes, timer and all: The four-week clock starts at the first proper wash — note the date. Go to step 1 ↓
Being honest, I rinse straight off: Fix this before judging anything — contact time is the entire difference between treatment and expensive lather.
- Weeks 1–4You are here
Run the four-week trial
One clean, judgeable experiment.
What this step involves
Morning
- Hold the schedule Two to three medicated washes weekly on frequent-wash routines; on weekly-or-less schedules, every wash is a medicated one, contact time non-negotiable.
Evening
- Keep the scalp out of the crossfire No new scalp products mid-trial, heavy oils and butters kept to the lengths, and fingernails off the flakes — scratching converts shedding into wounds.
Why this step: Four weeks is the span both the evidence and the NHS's own patient guidance use before judging an antifungal shampoo — itch typically yields first, visible flaking last, and quitting at week two exits exactly as the curve bends.
A fortnightly photo of the worst patch, hair parted, same light, is the honest scoreboard — shoulders and memory both exaggerate in different directions.
Ready for the next step?
Four correct weeks in — are flakes and itch clearly reduced?
Yes, noticeably: Ride the same active to full control, then step down to maintenance — the next decision that matters is the one about not stopping. Go to step 2 ↓
Partly, or not really: Partial response earns a mechanism rotation at the next step; zero response after honest technique moves the checkpoint below into play.
- Weeks 4–8, if neededYou are here
Rotate the mechanism if it plateaus
A second lever, not a louder first one.
What this step involves
Morning
- Switch families From zinc pyrithione to ketoconazole or selenium sulfide — or bring in the tar/salicylic pairing if built-up scale is the obstacle. Different mechanism, same technique discipline.
Evening
- Or alternate two actives through the week One antifungal wash, one scale-control wash is a legitimate standing pattern — many long-term controllers live exactly there.
Why this step: The shelf's actives genuinely differ in mechanism — yeast suppression, shedding control, scale dissolution — so a plateau on one is information about your scalp, not about the category. Rotation exploits that; buying a premium version of the same active does not.
Ready for the next step?
Four more weeks on the rotated approach — has the plateau broken?
Yes, moving again: Continue to control, then maintenance. Note which combination won; that's your long-term recipe. Go to step 3 ↓
No — eight honest weeks, two mechanisms, no result: That is the checkpoint met. The next tier is prescription, and your notes make that appointment short and productive.
- OngoingYou are here
Clearance means maintenance, not retirement
Keep the result at minimum effort.
What this step involves
Morning
- Step down, don't step off Roughly weekly with the winning active holds most cleared scalps; the yeast repopulates in weeks when treatment vanishes entirely.
Evening
- Pre-empt your known triggers Winter, stress runs, heavy hat seasons — dial maintenance up as they start rather than after the flare reports in.
Why this step: Relapse after full stop is this condition's most reliable behaviour — the organism stays, so the management does too. A maintenance wash is minutes a week; re-clearing a full relapse is another month-long campaign.
Ready for the next step?
Is a maintenance schedule actually in the calendar, or did clearance quietly end treatment?
Scheduled and running: That's the whole game — this pathway is now background maintenance, which is its best ending. Go to the checkpoint ↓
It ended when the flakes did: Restart the winning active weekly now, before the relapse makes the decision for you.
Four to eight weeks on the shampoo ladder
Counted from the first wash with real contact time — technique-free weeks don't count toward any verdict.
How to judge it: Against the fortnightly photos and the wash log: flake volume, itch, and how the scalp itself looks where parted. Shoulders lie in both directions; the parted-scalp photo doesn't.
After a fair run — one active four weeks, rotated once if needed — where are you?
The expected outcome, and the pathway's happy ending — pending one decision.
Most dandruff ends here. The single decision that protects the result is maintenance: the winning active roughly weekly, nudged up through winters and stressful stretches. Stopping entirely is the one move that reliably reopens the case within a month or two.
Rotate once more or add the scale-control pairing — this is normal ladder work, not failure.
Partial response usually means the right family hasn't met the right scalp yet, or built-up scale is shielding the yeast from the active. One more mechanism switch, or an alternating two-active week, resolves most of these. If the plateau survives that too, the prescription tier picks up with your notes as the map.
This is the handover point.
Two correct mechanisms with nothing to show is the shelf's honest limit — and it also reopens the diagnosis question, because psoriasis, product irritation and other mimics surface exactly in this scenario. The prescription tier starts with double-strength antifungals; the appointment starts with your wash log.
The condition has declared itself the inflamed version — the branch changes.
Visible inflammation, facial patches, or scale over angry skin is seborrheic dermatitis proper, and while the antifungal base continues, the anti-inflammatory arm and face-safe formats live at the prescription tier. Not an emergency — but not a keep-rotating-shampoos situation either.
These leave the pathway immediately, at any week
A child's scaly patches with broken hairs or bald spots (possible tinea capitis — prompt, oral treatment territory), a weeping or crusted scalp (possible infection), thick plate-like scale binding hair, or severe disease that arrived out of nowhere. Each has its own reason to be seen rather than shampooed.
This condition runs on cycles — seasons, stress, schedules — and rewards the boring habit over the heroic intervention. A maintenance wash that survives the calendar beats a perfect protocol that lasts three weeks; if flakes return through maintenance, resume the full schedule early rather than waiting for the shoulders to insist.
Where the over-the-counter pathway ends
For once, the line is not about potency being locked away — most of the treatment lives on the shelf, and most people never cross this line. It is about three specific things the aisle can't do: double-strength antifungals for heavier disease, anti-inflammatory control for the red-and-angry version, and face-safe formats for skin the shampoo shelf was never designed to touch. Cross with your wash log in hand; it converts the first prescription appointment from guesswork into escalation.
See the prescription pathway →Dandruff & seborrheic dermatitis: the full therapy pathway · dermapproved.com/treatments/dandruff/ · not a diagnosis — confirm anything you act on with a clinician
What to expect
Set the two dials honestly and this condition becomes background noise. Dial one: speed — antifungal shampoos need weeks, not washes, with itch usually improving first and shoulders reporting last; four weeks is the fair unit of judgement. Dial two: duration — the yeast is a permanent resident, so clearance is a state you maintain rather than a finish line you cross, and the maintenance wash is the whole difference between an occasional chore and a recurring crisis. Relapse after stopping is so predictable it should be treated as part of the condition's description rather than a failure of the treatment, the product, or you. Within those dials, the news is genuinely good: this is one of dermatology's most treatable conditions, the first line costs pocket money, and most people who work the ladder correctly never need the top of it.
- Five minutes of contact time is the dose — the clock, not the lather, does the treating
- Judge at four weeks; itch improves before flakes fully surrender
- Plateau means rotate the mechanism, not abandon the category
- Clearance is the signal to begin maintenance, not to stop — weekly is cheap insurance against monthly relapses
- Flaky brows and nose creases are the same condition — treat the whole map, or the untreated zones reseed the rest
The site stays useful through the long maintenance half of this condition: the dandruff shelf in the catalog is being built out as the hair-care expansion lands — graded on the actives this page describes — and the flare diary and photo tracker keep the seasonal pattern legible. When the shelf goes live, the actives on the cards above become browsable picks on this very page.
What would bring you back sooner
Whatever step you are on, these do not wait for the end of a trial period. They are the same
presentations listed at the top of this page — repeated here because that is where they
matter, rather than where they were easiest to put.
- A child with scaly scalp patches, broken hairs or hair loss See a dermatologist soon
- Weeping, crusting, tenderness, or swollen lymph nodes See a dermatologist soon
- Severe seborrheic dermatitis that appeared abruptly, or keeps escalating See a dermatologist soon
- Thick, matted, plate-like scale binding tufts of hair Worth a clinician visit
- Flaking plus sharply-edged plaques on elbows, knees or nails Worth a clinician visit
Prescription only — from here on, this is a clinician's decision The prescription pathway
Why this tier exists. What the aisle cannot do: put the yeast away permanently (nothing can — stopping treatment invites the flakes back, which is biology rather than product failure), calm significant visible inflammation, safely treat the thin skin of the face and eyelids, or fix a diagnosis that was never dandruff. And no shampoo works from the bottle — five minutes of contact time, twice or three times a week, for four weeks is the dose, and less than that is not a trial.
Two conditions share this map because they share a mechanism: ordinary flaking dandruff and its inflamed sibling, seborrheic dermatitis, are the mild and angry ends of one process. The routes split on whether the scalp is merely shedding or visibly inflamed — and both loop back to the same destination, maintenance, because this one is controlled rather than cured.
The same pathway in full below — each step names what it involves, why it sits where it does, and what tells you it's time to move up. Tap any therapy to jump to its detail.
Ordinary dandruff — flakes without fire
Flakes and itch over a normal-looking scalp. The branch where the aisle usually finishes the job, provided the shampoo is used like the drug it is.
You reach this column when: Genuinely unchanged after four correct weeks — or the scalp is visibly red and irritated, which reroutes to the seborrheic dermatitis branch.
- Prescription topical
Prescription strength
Why this step sits here: Dandruff that has genuinely defeated two correct over-the-counter mechanisms earns the 2% tier — and a fresh pair of eyes on whether it was ever only dandruff, since psoriasis and other mimics surface exactly here.
Bring the receipts to this appointment: which shampoos, how many weeks, what contact time. 'Tried everything' with details becomes a treatment decision; without them it becomes a suggestion to try everything again.
Seborrheic dermatitis — the inflamed version
Greasy scale over pink, irritated skin — on the scalp, and often the eyebrows, nose creases, ears, beard or chest. The antifungal logic holds, with an anti-inflammatory arm bolted on and different rules for facial skin.
You reach this column when: Inflammation persists or facial patches hold out — thin skin often needs formats and strengths the aisle doesn't sell.
- Prescription topical
Prescription antifungals plus a flare-control arm
Why this step sits here: The standard pairing: 2% antifungal as the backbone, with short steroid bursts for scalp flares and steroid-free calcineurin inhibitors for the face — where seborrheic dermatitis most loves to sit and steroids do their damage fastest. The antifungal is the treatment; the anti-inflammatory is the escape hatch.
When to move up
- A fair trial
- About four weeks of the combined plan, with the steroid used as a burst rather than a habit.
- Improvement looks like
- Flares controllable within days, baseline steadily calmer, and the steroid needed less each cycle — the trend matters more than any single week.
- Move up if
- Control keeps collapsing the moment courses end, steroid rescues become routine, or facial disease grinds on.
→ The next step up this pathway.
- Prescription topical
The newer chemistry, and a wider look
Why this step sits here: Disease that churns through the standard rotation is what the steroid-free newcomer exists for — sustainable once-daily anti-inflammatory control without a stopwatch. The same appointment should widen the lens: severe recalcitrant seborrheic dermatitis is occasionally a marker of something systemic, and checking is cheap.
If your disease arrived suddenly and severely, say exactly that — onset speed is a genuinely useful clinical detail here, and it changes what a thorough clinician considers beyond the skin.
Keeping it quiet
The yeast lives on every scalp, including cleared ones. What stopping everything buys is a front-row seat to the relapse; what a light maintenance schedule buys is not thinking about this condition most of the time.
Cleared, and wanting to stay that way
Step the winning shampoo down to roughly weekly rather than out the door. The commonest relapse story is a good result followed by a quiet return to cosmetic-only washing — the flakes take about a month to figure out the guard changed.
Winter flares, summer peace
The seasonal pattern is real — cold, dry months and hats favour the yeast. Pre-empt it: resume or double the maintenance frequency as autumn starts rather than after the shoulders report the news.
Weekly-or-less washing, braids and protective styles
Adapt the format, not the goal: full contact time on wash days, applied to the scalp between braids where relevant, and ask about leave-on antifungal formats that treat between washes. A regimen that wrecks the style will be abandoned, and everyone involved should plan around that honestly.
Beard and face as the stronghold
The beard gets washed with the antifungal during contact time like the scalp does, and facial patches keep their steroid-free option on standby. Moisturising facial seborrheic dermatitis as 'dry skin' is the classic year-long detour — the location gives it away.
Dandruff & seborrheic dermatitis: the full therapy pathway · dermapproved.com/treatments/dandruff/ · not a diagnosis — confirm anything you act on with a clinician
How an appointment actually happens, what to take to it, and how to keep your skin liveable while a prescription or procedure does its work.
What seeing a dermatologist actually looks like
A GP or family doctor handles most of what sits above the shampoo aisle — confirming the diagnosis, prescribing the 2% tier and steroid bursts, and checking the mimics. Dermatology referral earns its wait when disease is severe or atypical, when the psoriasis-versus-seborrheic-dermatitis call is genuinely hard, when a child's scalp raises the tinea question, or when facial disease keeps outrunning treatment. Pharmacists are an underused middle tier here: in many countries they can advise on — and sometimes supply — the stronger antifungal shampoos without a full appointment.
What to bring
- Your shampoo history with technique details: which actives, how many weeks each, and whether the five-minute contact rule was actually in play
- Your real wash schedule and hair practices — braids, extensions, weekly washing — because prescriptions that ignore them fail on contact with life
- Photos of the scalp at its worst, parted to show skin; waiting-room scalps are famously well-behaved
- Where else it shows up: brows, nose creases, ears, beard, chest — the map strengthens the diagnosis
- Onset speed and anything that changed around it — new severity from nowhere is a detail worth saying out loud
- For a child: how long, whether hairs are breaking, and whether anyone else at home or school has it
Questions worth asking
- Is this seborrheic dermatitis, psoriasis, or something in between — and what would tell us?
- What's the maintenance plan once it's controlled — which product, how often, forever?
- How should the steroid be bounded — how many days, how often is too often?
- What's the right format for my hair and wash schedule — shampoo, foam, lotion, leave-on?
- Which of my facial patches is this, and what's safe that close to my eyes?
- If this came back severely and suddenly — is there anything beyond my scalp worth checking?
Cost and access. This may be the cheapest pathway on the site: the first line is a supermarket purchase, generic ketoconazole 2% and steroid scalp lotions cost little in most systems, and even 'trying everything' rarely dents a budget. The cost inversion arrives only at the top — roflumilast foam is new-drug priced with variable coverage — and in time rather than money everywhere else: the real spend is four disciplined weeks per rung. The one purchase worth actively avoiding is the premium 'scalp detox' tier of the cosmetic aisle, which charges prescription prices for products that are neither.
Two dismissals are worth pushing past. 'It's just dandruff' undersells a condition that measurably affects confidence and comfort and has genuinely effective treatment — persistence deserves a plan, not a shrug. And 'use a dandruff shampoo' is incomplete advice without the technique that makes it work; if that's all an appointment yields, asking 'which active, what contact time, and what do I do when it plateaus' converts it into an actual prescription.
Skincare alongside therapy
The supporting habits here are mostly about delivery — getting the actives to the skin they treat, through hair that has its own needs — plus not sabotaging a working plan with scratching, picking, or product build-up.
One idea organises everything: the treatment happens at the scalp, not in the hair. Actives need contact with skin; conditioners and stylers belong on the lengths; and fingernails are the enemy of every rung on this ladder, because scratched skin invites infection and more inflammation.
While you're working the shampoo ladder
Technique is the multiplier on this rung. The same bottle delivers a real drug or coloured water depending on contact time and placement — and the four-week verdict is only meaningful if the technique held all four weeks.
Do
- Massage the lather into the scalp itself and start the five-minute clock — wash the rest of you while it works
- Run the lather through beard and brows during the contact window if they flake too
- Condition the lengths afterwards as usual; medicated shampoos are not kind to hair fibre and don't need to be
- Keep a simple note of active, dates and washes — the checkpoint runs on it
Avoid
- The lather-rinse reflex — thirty seconds of contact is most of the way to placebo
- Scratching or picking flakes loose; broken skin trades flakes for crusts
- Layering multiple medicated shampoos in one wash on the more-is-better theory
- Heavy oils and butters on the scalp itself mid-treatment — they feed the yeast you're starving; keep them on the lengths
What that looks like on a shelf: .
While you're on the prescription tier
The prescriptions inherit the same delivery rules and add one discipline: the steroid is a visitor, not a tenant. Meanwhile the maintenance question — what continues after clearance — should be answered before clearance arrives.
Do
- Apply scalp lotions and foams to parted, dry-ish hair so they reach skin rather than coating strands
- Use steroid bursts exactly as bounded, and log how often you need them — the trend is the treatment's report card
- Keep the antifungal running through steroid bursts; calming the fire doesn't evict the arsonist
- Agree the maintenance schedule at the prescribing appointment, not after the relapse
Avoid
- Stretching a facial steroid past its course because it works — the face is where that bill arrives fastest
- Stopping everything at once when skin looks perfect; taper to maintenance instead
- Treating a burning first week of a calcineurin inhibitor as failure — it usually settles, and knowing that in advance keeps the course alive
What that looks like on a shelf: .
The supporting shelf
Product shelves for this condition are coming to the catalog as the hair-care expansion lands; until then the principles above are deliberately product-agnostic. What never changes: fragrance-heavy scalp products on inflamed skin cost more than they add.
Every therapy named above, in full. Look things up here; it is not meant to be read end to end.
Every therapy, explained
Reference, not reading — every therapy named anywhere above, described the way a clinician would describe it. Nobody reads this section end to end; open the one you were sent here for. Which one is right for you is the appointment's job, not this page's.
Over the counter
Available without a prescription. Each one opens with what to look for on a label, which is the part that stays true regardless of which brand is on the shelf that month.
Over-the-counter Ketoconazole 1% shampoo
Azole antifungal, shelf strength
Generally compatible
Ketoconazole 1% shampoo
Azole antifungal, shelf strength
The shelf's most pharmacologically serious option — a true antifungal drug in shampoo form, one concentration step below its prescription sibling.
Browse all ketoconazole products in our catalog →
How it works
Ketoconazole disrupts the yeast's cell membranes, cutting the Malassezia population that drives the whole cascade. Less yeast, less irritation, less accelerated shedding — the flakes fade because their factory slowed, not because they were scrubbed away.
What the evidence says well established
Ketoconazole is the best-studied topical antifungal for this condition: the Cochrane review of topical antifungals found it clearly superior to placebo for seborrhoeic dermatitis, with steroid-comparable effectiveness and fewer side effects.
Typical course
Two to three times weekly, lathered onto the scalp itself and left on for about five minutes before rinsing; judged at four weeks, then stepped down to weekly-ish maintenance.
Commonly discussed side effects
- Occasional dryness or irritation
- Rarely, changes in hair texture
Worth knowing
- The contact time is the dose — a quick lather-and-rinse delivers a fraction of the treatment
- It treats beards and facial patches too, used carefully as a wash during those five minutes
Pregnancy: Topical ketoconazole in rinse-off form is generally regarded as compatible with pregnancy — negligible absorption — though confirming with a clinician is always reasonable.
Why it sits where it does: It leads the shelf because it aims at the organism rather than the symptom, with the deepest evidence file of any option here — the closest thing this condition has to a default first pick.
Over-the-counter Zinc pyrithione shampoo
Everyday antifungal
Generally compatible
Zinc pyrithione shampoo
Everyday antifungal
The active inside most mainstream dandruff shampoos — mild, effective, and built for regular use.
Browse all zinc pyrithione products in our catalog →
How it works
An antifungal and antibacterial agent that suppresses Malassezia with each wash. Its gentleness is strategic: a treatment mild enough to use often suits a condition that needs indefinite management.
What the evidence says strong
Zinc pyrithione has decades of use and monograph-level recognition for dandruff and seborrhoeic dermatitis, with trial evidence supporting flake and itch reduction against placebo.
Typical course
Each wash or alternate washes for ordinary dandruff; the same five-minute contact rule applies, gentler active or not.
Commonly discussed side effects
- Uncommon irritation
Worth knowing
- If it plateaus after early progress, the usual next move is a mechanism switch — ketoconazole or selenium sulfide — rather than more of the same
Pregnancy: Rinse-off zinc pyrithione is generally regarded as compatible with pregnancy.
Why it sits where it does: It shares the first rung as the maintenance-friendly option — often the long-term keeper even when something stronger did the initial clearing.
Over-the-counter Selenium sulfide shampoo
Dual-action antifungal
Generally compatible
Selenium sulfide shampoo
Dual-action antifungal
The step-up within the aisle — stronger against the yeast and the shedding both, with a couple of cosmetic trade-offs.
Browse all selenium sulfide products in our catalog →
How it works
Selenium sulfide suppresses Malassezia and simultaneously slows the epidermal overdrive producing the flakes — two levers where most options pull one, which is why it often works where a milder active stalled.
What the evidence says strong
Selenium sulfide is an established monograph antifungal for dandruff and seborrhoeic dermatitis with long clinical use and supporting trial data.
Typical course
Twice weekly with full contact time during active treatment, tapering to weekly or fortnightly for maintenance.
Commonly discussed side effects
- Can discolour blond, grey, dyed or chemically treated hair
- A distinctive smell some people veto
- Scalp dryness with overuse
Worth knowing
- Rinse thoroughly — residue is what causes most of its irritation and discolouration complaints
Pregnancy: Rinse-off selenium sulfide is generally regarded as low-concern in pregnancy; confirm with a clinician if you prefer certainty.
Why it sits where it does: It is the aisle's second gear — the rotation partner when a first active gave partial results, reached before anyone needs a prescription pad.
Over-the-counter Coal tar and salicylic acid
Scale control
Individualized — ask a clinician
Coal tar and salicylic acid
Scale control
The scale-management wing of the aisle — for when the problem is as much the built-up crust as the yeast beneath it.
- Coal tar shampoos — Slow cell overproduction; suited to heavy scale and the psoriasis-overlap zone. Smell, staining, and added sun sensitivity are the levy.
- Salicylic acid shampoos — Keratolytic flake-lifters — they clear the debris so antifungals can reach skin. Support crew, not a solo treatment.
Browse all coal tar products in our catalog →
How it works
Coal tar damps the accelerated cell production that turns into scale; salicylic acid dissolves the bonds holding dead layers together. Neither is primarily antifungal — they clear the battlefield the antifungals fight on, which is why the pairing outperforms either family alone on heavily scaled scalps.
What the evidence says strong
Both actives hold over-the-counter monograph status for dandruff and seborrhoeic dermatitis, with long-standing clinical use; the evidence positions them as scale-directed adjuncts alongside antifungal therapy rather than replacements for it.
Typical course
One to two times weekly, typically alternated with an antifungal shampoo rather than replacing it; scale softens over the first few weeks.
Commonly discussed side effects
- Tar: odour, staining of light hair and fabrics, photosensitivity of the scalp
- Salicylic acid: dryness with overuse
Worth knowing
- Physically picking softened scale off invites irritation and infection — let the chemistry do the lifting
- Thick plate-like scale that resists this pairing is a see-someone finding, not a scrub-harder one
Pregnancy: Rinse-off salicylic shampoos are generally considered acceptable; coal tar in pregnancy is a confirm-with-your-clinician item, easily substituted meanwhile.
Why it sits where it does: It rounds out the aisle as the scale specialists — the difference-makers when flakes have compounded into crust, always in partnership with an antifungal that addresses the cause.
Browse the whole catalog for this condition:
What changed recently: The category's first genuinely new chemistry in decades arrived by prescription rather than on the shelf: roflumilast foam, a steroid-free anti-inflammatory approved for seborrheic dermatitis, which matters here mainly as the thing above the ceiling. On the shelf itself, the quiet improvement is format — leave-on antifungal foams and lotions that uncouple treatment from wash frequency, a genuine advance for anyone who washes weekly or wears protective styles.
Prescriptions and procedures
About the brand names below. Brand names on this shelf are marketing shells around a short list of generic actives — the ingredient line, not the front label, tells you which rung of the ladder a bottle belongs to. Two practical notes: the same brand frequently sells both medicated and purely cosmetic versions in near-identical bottles, so check that the active you came for is actually listed; and 'natural anti-dandruff' products built on essential oils are cosmetics with folklore, not monograph drugs. Where a region is missing in a brands section, that reflects what we could verify rather than proof of absence.
Prescription topical Prescription antifungals
Ketoconazole 2% and ciclopirox
Generally compatible
Prescription antifungals
Ketoconazole 2% and ciclopirox
The direct continuation of the shelf ladder — the same antifungal logic at concentrations and in formats the aisle doesn't carry.
- Ketoconazole 2% (shampoo or cream) — The same molecule as the shelf version at double strength — shampoo for scalp, cream for face and body patches.
- Ciclopirox (shampoo or cream) — A different antifungal family with added anti-inflammatory character; the standard alternative when azoles underperform.
What it's called at the pharmacy
Generic names Ketoconazole 2% (shampoo or cream) · Ciclopirox (shampoo or cream)
Sold as
- Dispensed generically almost everywhere; ketoconazole 2% is one of dermatology's most-prescribed shampoos
In some countries ketoconazole 2% sits behind the pharmacy counter rather than a full prescription — worth asking a pharmacist before assuming a doctor's visit is needed.
How it works
Higher azole concentration clears heavier yeast loads; ciclopirox brings a second mechanism plus intrinsic anti-inflammatory action, useful when irritation is part of the picture. Creams extend the same treatment to faces, ears and chests where shampoo logistics fail.
What the evidence says well established
Prescription-strength ketoconazole and ciclopirox are the standard escalation in seborrhoeic dermatitis, both supported by the Cochrane topical-antifungal evidence base against placebo.
Typical course
Twice weekly for the shampoo, daily for creams, over about four weeks — then a deliberate step down to maintenance frequency, because stopping cold invites the relapse.
Commonly discussed side effects
- Irritation or dryness
- Occasional contact sensitivity
Worth knowing
- The maintenance conversation belongs in the same appointment as the prescription — 'how often once it's clear' is the question that prevents the boomerang
Pregnancy: Topical antifungals of this class are generally usable in pregnancy with clinician confirmation — systemic absorption from rinse-off and limited-area use is minimal.
Why it sits where it does: It is the natural second rung because it escalates the winning strategy rather than changing it — more antifungal, better formats, same target.
Prescription topical Short-course anti-inflammatories
Topical steroids and calcineurin inhibitors
Individualized — ask a clinician
Short-course anti-inflammatories
Topical steroids and calcineurin inhibitors
The fire brigade — inflammation control that works alongside the antifungals rather than instead of them.
- Corticosteroid scalp lotions and foams — Fast calm for inflamed, itchy flares — in bursts of days to a couple of weeks, not as a standing habit.
- Tacrolimus and pimecrolimus — The steroid-free choice for the face and around the eyes, where steroid side effects arrive fastest.
What it's called at the pharmacy
Generic names Corticosteroid scalp lotions and foams · Tacrolimus and pimecrolimus
Sold as
- Generic scalp steroid preparations and calcineurin inhibitors are available in most systems; vehicle (lotion, foam, oil) is chosen to suit hair and site
Scalp steroids come in vehicles designed for hair — asking for a formulation that suits your hair type and styling is a legitimate part of the prescription.
How it works
Steroids shut down the inflammatory response driving redness and itch within days; calcineurin inhibitors do similar work without thinning skin, which matters on the face where seborrheic dermatitis loves to settle. Neither touches the yeast — which is why they are the sidecar, and the antifungal stays the motorcycle.
What the evidence says strong
Topical corticosteroids give rapid short-term control of seborrhoeic dermatitis flares — the Cochrane comparison found ketoconazole similarly effective with fewer adverse effects, which is exactly why steroids are used briefly and antifungals continuously.
Typical course
Steroid bursts of a few days to two weeks at flare peaks; calcineurin inhibitors for facial patches until clear, then as-needed.
Commonly discussed side effects
- Steroids: skin thinning and rebound with sustained use, fastest on face and eyelids
- Calcineurin inhibitors: burning for the first applications
Monitoring
A steroid that has become a weekly habit rather than an occasional rescue is the pattern to report — it usually means the antifungal side of the plan needs rebuilding.
Worth knowing
- Facial patches near the eyes deserve the steroid-free option by default
- Steroids alone clear the redness while the yeast regroups — the relapse is built in unless the antifungal continues
Pregnancy: Short courses of appropriate-potency topical steroid are used in pregnancy with clinical guidance; the calcineurin decision is individually made.
Why it sits where it does: It shares the prescription rung as the flare-response arm — speed the antifungals lack, borrowed briefly, always returned.
Prescription topical Roflumilast foam
Steroid-free PDE4 inhibitor
Individualized — ask a clinician
Roflumilast foam
Steroid-free PDE4 inhibitor
The first genuinely new chemistry this condition has seen in decades — a once-daily, steroid-free anti-inflammatory foam approved specifically for seborrheic dermatitis.
What it's called at the pharmacy
Generic name Roflumilast foam
Sold as
- Zoryve foam 0.3% — approved for seborrheic dermatitis in patients 9 years and older
New enough that coverage and availability vary a great deal; the generics-priced ladder below it remains the standard opening play.
How it works
Inhibits phosphodiesterase-4, damping the inflammatory signalling inside the skin without steroid machinery — which removes the time limits steroids impose, on a condition that never stops needing management. The foam vehicle is scalp- and hair-practical by design.
What the evidence says strong
A phase 3 randomised vehicle-controlled trial found once-daily roflumilast foam effective against the redness, scaling and itch of seborrheic dermatitis with good tolerability — the basis of its approval.
Typical course
Once daily to affected areas — scalp, face and body alike — with reassessment as the clinician directs.
Commonly discussed side effects
- Generally well tolerated in trials; the long-term real-world file is still young
Worth knowing
- Its place in the ladder is still settling — typically after the antifungal tiers have had their fair chance, and where steroid time-limits chafe
Pregnancy: A newer agent with limited pregnancy data — squarely a prescriber's judgement.
Why it sits where it does: It tops the prescription tier as the new option for disease that keeps burning through the standard rotation — notable less for raw power than for being sustainable anti-inflammatory treatment without a steroid's stopwatch.
On the horizon
Pipeline information current as of 2026-08-11
Only treatments in phase 3 or later, or recently reaching the market, for dandruff and seborrheic dermatitis specifically.
This changes nothing about what to do now. Nothing here changes what to do now — and this condition's first line has been sitting on a shelf for decades, which no pipeline entry alters.
Recently arrived
Roflumilast foam 0.3% (Zoryve) (2023). The category's first new mechanism in decades: a once-daily steroid-free PDE4 inhibitor approved for seborrheic dermatitis on the strength of a positive phase 3 programme. Its significance is sustainability — anti-inflammatory control without steroid time limits — with access and coverage still the practical constraint.
In late-stage development
Beyond roflumilast the honest phase-3 ledger is short. The interesting movement is understanding rather than molecules: the scalp-microbiome literature keeps refining why some scalps tolerate Malassezia and others riot, which may eventually segment treatment — and formats keep improving, with leave-on antifungals uncoupling therapy from wash frequency for the schedules that need exactly that. Re-reviewed on the site's regular cycle.
Common questions
Is dandruff just a dry scalp?
Almost always no — and the distinction decides the treatment. Dandruff is driven by a yeast that feeds on scalp oil, which is why it thrives on oily scalps and why moisturising shampoos do nothing for it. A genuinely dry scalp is uncommon, usually comes with dry skin everywhere, and produces fine dry flakes without the greasy, yellowish quality. If years of 'hydrating' products haven't touched your flakes, that is the evidence: it was never dryness, and the antifungal aisle is the one you needed.
Why did my dandruff shampoo stop working?
Three explanations cover nearly every case. Most often it never fully worked because it never got a fair chance — seconds of contact instead of minutes, or a week of use instead of a month. Second, genuine plateaus happen, and the standard answer is rotating to a different mechanism: zinc pyrithione to ketoconazole or selenium sulfide, for instance, or alternating two through the week. Third, what's flaking now may not be what flaked then — inflammation creeping in, or psoriasis unmasking itself. A real change in character after months of control is worth a look rather than a fourth bottle.
The flakes are in my eyebrows and beside my nose too. Same thing?
Very likely — those creases are prime oil territory, and seborrheic dermatitis settles there so predictably that eyebrow-and-nose-crease flaking is practically its signature. It gets misread as dry skin and moisturised for years, which feeds it nothing useful. The fix is extending the same antifungal logic: let the medicated shampoo's lather sit on those zones during its contact time, and if the patches are stubborn or close to the eyes, a prescription cream — often the steroid-free kind — finishes the job on skin too thin for repeated steroids.
I wash my hair once a week. How is a 'use three times weekly' shampoo supposed to work?
It isn't — as written, that instruction assumes a wash schedule that doesn't fit many hair types, and pretending otherwise wrecks both the treatment and the hair. The workable versions: full, patient contact time on the wash days you do have; applying product to the scalp between braids where styles allow; and asking specifically about leave-on antifungal formats — foams and lotions that treat between washes without demanding extra ones. A clinician or pharmacist who starts by asking about your hair practices is the one worth listening to.
Do I have to use the medicated shampoo forever?
In a light-touch way, probably yes — and it's less grim than it sounds. The yeast is a permanent resident of every scalp, so when treatment stops entirely, the conditions that produced the flakes reassemble within weeks. The practical translation is a maintenance wash roughly weekly with the active that cleared you, dialled up in winter or around flares. That's a few minutes a week to not think about this condition — most people find the trade acceptable once it's framed as rent rather than treatment failure.
Can stress really cause dandruff?
Trigger, yes; cause, no. The machinery — yeast, oil, a susceptible scalp — has to be there already, but stress reliably turns the volume up, which is why exam seasons and bad months so often arrive with company on your shoulders. Seasons do the same thing: winter flares are common enough to plan around. The useful move isn't stress management as scalp care; it's anticipating the pattern — running your maintenance schedule a little harder through the stretches that historically set it off.
Is dandruff contagious? Can I give it to someone sharing my pillow?
No. The yeast involved lives on essentially everyone's skin already — what differs is how individual scalps react to it, and that reactivity is yours, not transmissible. Nobody catches dandruff from a pillow, a comb or a hat. The one caveat sits with children: a child's scaly, patchy scalp with broken hairs may be tinea capitis, which is a genuinely contagious fungal infection and a see-someone-promptly situation — one more reason kids' scalps get a clinician rather than a borrowed bottle.
The other 138 questions
Everything that doesn’t fit on a therapy ladder — side effects, timelines, pregnancy, cost, the things people get told that aren’t true. Here are the ones asked most.
- Is this dandruff or just a dry scalp? Almost certainly dandruff. A genuinely dry scalp is rare and comes with dry skin everywhere; dandruff flakes are larger, oilier and yellowish on a scalp that is not dry.
- What actually causes dandruff? A yeast called Malassezia that lives on scalp oil. Its by-products irritate the skin into shedding faster than it can shed invisibly, so cells clump into flakes.
- Doesn't dandruff mean my scalp is dry? No — it is driven by yeast metabolising scalp oil, which is why it favours oily scalps and why an antifungal treats it while a moisturiser does not.
- How long am I supposed to leave the shampoo on? About five minutes on the scalp before rinsing. This single number moves the outcome more than the brand, the price or the active you chose.
- Why four weeks before deciding it has failed? Because that is how long the trials ran and how long the skin needs. The NHS draws the same line — four weeks of proper use before concluding anything.
- What happens if I use the steroid scalp lotion too often? Sustained use thins skin and sets up rebound flaring when you stop — fastest on the face and eyelids, slower but real on the scalp.
- Can I keep oiling my scalp while treating it? Keep oils on the lengths, not the scalp, during active treatment. The yeast metabolises exactly those lipids, so scalp oiling works against the antifungal.
- When have I earned a prescription? After roughly eight weeks across two different over-the-counter mechanisms, used with real contact time, with nothing to show — or sooner if the scalp is visibly inflamed.
- What is the cheapest way to do this properly? A supermarket zinc pyrithione or ketoconazole shampoo, used with five minutes of contact time. The expensive part of this condition is time, not money.
- My baby has cradle cap — what should I do? Very little — massage an emollient or coconut oil in to loosen the scales, brush gently, wash with baby shampoo, and avoid olive and peanut oil.
- What if I only wash every two weeks? Hold the contact time, drop the frequency. Dermatology guidance now recommends about once weekly for curly or tightly coiled hair, with leave-on options filling the gaps.
- How do I get through a day in a dark jacket? Wash the morning of, brush the shoulders before leaving, keep a lint roller in your bag, and treat the visible flakes as a delivery problem you can manage while treatment works.
- Why did it come straight back when I stopped? Because the yeast lives there permanently. Treatment suppresses it; stopping removes the pressure and the population rebuilds within weeks.
- What do scaly patches and broken hairs on a child mean? Get that seen promptly. Tinea capitis is the likeliest explanation at that age, it needs oral antifungal treatment, and shampoo alone cannot cure it.
- Are salon scalp detox treatments worth the money? For this condition, no. They are cosmetic services with no regulated antifungal, and they charge prescription prices for a temporary reduction in visible scale.
- How do I read the label to find the real active? Turn the bottle over and look for a drug facts panel naming an active at a percentage. No panel means no regulated anti-dandruff drug, whatever the front says.
Sources and further reading
The staging, escalation points, and therapy descriptions on this page are anchored to published clinical guidelines rather than editorial judgment.
What this page is built on
- Topical antifungals for seborrhoeic dermatitis (Cochrane review)
- FDA OTC monograph: dandruff, seborrheic dermatitis and psoriasis drug products (21 CFR 358, Subpart H)
Everything on this page traces back to the sources below. Dandruff has no dedicated specialty guideline — its evidence lives in a strong Cochrane review, a US drug monograph that literally defines what the shelf may claim, and the trial record behind the one new arrival.
Evidence and regulation
The review that underpins the antifungal ladder, the monograph that legalises the shelf, and the phase 3 behind the newcomer.
- Topical antifungals for seborrhoeic dermatitis Cochrane Database of Systematic Reviews Fifty-one trials' worth of evidence for ketoconazole and ciclopirox — including the steroid comparison that shapes this page's flare-versus-baseline logic.
- Rulemaking history: OTC dandruff, seborrheic dermatitis and psoriasis drug products US Food and Drug Administration The regulatory file behind the shampoo aisle — which actives an over-the-counter product may carry for this condition, and how that list was built.
- Roflumilast foam 0.3% for seborrheic dermatitis: phase 3 trial Journal of the American Academy of Dermatology The randomised trial behind the first new mechanism this condition has seen in decades.
Patient information
Written to be read.
- Seborrheic dermatitis: Overview American Academy of Dermatology The spectrum explained — dandruff as the mild end, and what the inflamed version involves.
- Seborrheic dermatitis: Diagnosis and treatment American Academy of Dermatology The AAD's public-facing account of the treatment tiers.
- Dandruff NHS (UK) Concise self-care guidance — including the same four-week fair-trial line this pathway uses.
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