Glycolic Is the Fastest Acid. That's Its Design Flaw.
The smallest AHA gets deepest and shows results soonest — which is precisely why routines built around it overshoot, and why the people who do best with it use it least.
A+ Blackheads
What Makes This Different
Most pharmacy acne creams pick one or two actives — salicylic acid, or niacinamide plus zinc, or an AHA. Phys-AC Global Severe Blemish Care layers salicylic acid, a three-acid AHA combination, niacinamide, zinc PCA, and A-Derma's proprietary Myrtacine myrtle extract in a single cream. The combination is aggressive on paper but buffered by the Rhealba oat base, and the overall effect is a more comprehensive treatment than most pharmacy-level acne creams attempt.
A-Derma
A-Derma Phys-AC Global Severe Blemish Care Review
Persistent Acne Treatment
treatment cream pharmacy brand Paraben Free Cruelty Free Vegan
A-Derma's most treatment-forward acne cream, layering salicylic acid, a three-acid AHA trio, niacinamide, zinc PCA, and the brand's Myrtacine myrtle extract into a single nightly leave-on formula. For persistent adult acne on oily-to-combination skin, it's one of the more comprehensive pharmacy-level treatment creams available — provided you introduce it carefully and always wear SPF.
Made in France Launched 2019 All-year use PAO: 12 months
Run it through our tools Clashes with my routine? Pregnancy-safe? Find a cheaper dupe Patch-test it first
Scores & Grades
Scores & Condition Grades
Moderate confidence89% of checks measured
A well-targeted treatment cream for persistent oily-skin acne that layers multiple well-studied actives with A-Derma's Myrtacine differentiator. Suitability breadth is narrow by design — this is a specialized treatment, not a general-purpose moisturizer — and the acid load requires a cautious introduction.
Ingredient evidence — every hero active graded against our published clinical-evidence table for the specific concern it claims to help.
Formulation analysis — the full ingredient list reviewed for dose, pH and irritant load (24 of 27 checks measurable).
Real-user outcomes — collecting. We sample 150–250 verified reviews per product; until this product's collection lands, its grades lean on the chemistry and fit above. Grades already backed by collected reviews carry an Outcome-backed mark.
The Phys-AC range has several years of European pharmacy distribution, and the active ingredients in this formula (salicylic acid, AHAs, niacinamide, zinc) are all backed by substantial clinical evidence. The Myrtacine component has Pierre Fabre in-house research behind it.
Graded for each concern tap a card for the why
A+Blackheads
Among the top picks for blackheads — #97 of 1312 graded.
- Salicylic acid — standing established — regulatory active+trial for blackheads.
- Glycolic acid has limited evidence for blackheads.
- Blackheads — evidence best supported — salicylic acid.
- Blackheads — outcomes prior clinical floor — salicylic acid.
A+Acne
One of 520 A-tier picks for acne — a strong choice in a strong field of 1322.
- Salicylic acid — standing established — regulatory active+trial for acne.
- Glycolic acid has limited evidence for acne.
- Niacinamide has limited evidence for acne.
- Zinc has limited evidence for acne.
A+Rough Texture
Among the top picks for rough texture — #160 of 2221 graded.
- Salicylic acid works by an established mechanism for rough texture.
- Glycolic acid works by an established mechanism for rough texture.
- Rough texture — evidence best supported — salicylic acid.
B-Excess Oiliness
A dependable B-tier pick for excess oiliness — the 232 A-tier leaders outrank it.
- Salicylic acid has limited evidence for excess oiliness.
- Niacinamide has limited evidence for excess oiliness.
- Zinc has limited evidence for excess oiliness.
- Excess oiliness — evidence best supported — salicylic acid.
B-Hyperpigmentation
A dependable B-tier pick for hyperpigmentation — the 46 A-tier leaders outrank it.
- Glycolic acid has limited evidence for hyperpigmentation.
- Niacinamide has emerging evidence for hyperpigmentation.
- Hyperpigmentation — evidence best supported — niacinamide.
C+Large Pores
Middling for large pores — the leaders reach A+.
- No qualifying study for Salicylic acid on large pores.
- No qualifying study for Glycolic acid on large pores.
- Niacinamide has limited evidence for large pores.
- Large pores — evidence best supported — niacinamide.
C-Acne Scarring
Middling for acne scarring — the leaders reach A−.
- Glycolic acid has limited evidence for acne scarring.
- No qualifying study for Niacinamide on acne scarring.
- Acne scarring — evidence best supported — glycolic acid.
Grades are suitability — "graded for rosacea-prone skin," never "treats rosacea."
Product quality profile
How well-made, safe, pleasant and fairly priced this product is — context around the grades above, not a treatment verdict. A focused treatment can grade A+ for its concern while scoring lower here on feel or value; for actives like retinoids, some dryness is the mechanism working.
Formula quality72
Safety & tolerability92
Real-world results60
Usability & feel69
Value80
Brand trust82
Full audit trail — every factor and check
Assessment
Pros & Cons
Pros
- ✓ Multi-mechanism approach targets multiple aspects of acne simultaneously
- ✓ Salicylic acid and three-AHA combination provides comprehensive exfoliation
- ✓ Rhealba oat base buffers the acid load for better tolerance
- ✓ Niacinamide plus zinc PCA addresses sebum and inflammation
- ✓ Myrtacine component adds a biofilm-targeting angle
- ✓ Non-greasy finish layers well under moisturizer and sunscreen
- ✓ Fragrance-free and vegan formulation
Cons
- ✗ Not suitable for dry, sensitive, or rosacea-prone skin
- ✗ Initial purging phase can be off-putting for 2-3 weeks
- ✗ Pregnancy use requires healthcare provider consultation
- ✗ Demands strict daily SPF discipline to prevent photosensitivity issues
- ✗ 40ml tube is small relative to the price
- ✗ Cannot be stacked with retinoids at the same application
Review
Full Review
Layering multiple acne actives is generally how you end up with destroyed, reactive skin. A salicylic acid cleanser, a glycolic acid toner, a niacinamide serum, an adapalene at night, and a zinc moisturizer — each fine on its own, together a one-way ticket to the dermatologist for a barrier repair plan. The standard advice is to pick your battles: one BHA, one retinoid, a supporting niacinamide, and call it a routine. A-Derma's Phys-AC Global Severe Blemish Care breaks the rule deliberately. It combines salicylic acid, three different AHAs, niacinamide, zinc PCA, and the brand's proprietary Myrtacine myrtle extract in a single leave-on cream, and the reason it works as a product rather than as an irritation disaster is the tolerance choreography baked into the base. Rhealba oat, glycerin, propanediol, and dimethicone form a soothing-emollient scaffolding that holds the aggressive active stack in a cream that most users can actually apply nightly without flaring.
The logic of combining all these actives is mechanistic. Acne is not one problem — it's at least three. There's the follicular hyperkeratinization that causes pores to become clogged in the first place, which is what salicylic acid and adapalene address directly. There's the excess sebum production that fuels the process, which is what niacinamide and zinc target. There's the C. acnes bacterial component, which is where the Myrtacine extract is positioned with its biofilm-disrupting research angle. And there's the inflammation that causes the visible redness and painful lesions, which is addressed by the niacinamide, zinc, and Rhealba oat working together. A single-active product addresses one of these mechanisms. This cream attempts to address all of them at once, and for persistent acne that hasn't responded well to simpler treatments, that multi-mechanism approach is genuinely useful.
The texture is where the product earns its daily-use positioning. On paper, a cream containing salicylic acid, glycolic acid, lactic acid, and citric acid sounds like it should sting, burn, or flake. In practice, Phys-AC Global applies as a light, fast-absorbing cream with only a mild initial tingle that usually subsides within a minute. The finish is semi-matte and layers cleanly under a moisturizer — you don't feel like you just coated your face in acid. This is the Rhealba oat and glycerin doing their work, buffering the low-pH active phase and keeping the cream from destabilizing an already-compromised acne-prone barrier. For users who've tried raw AHA/BHA products and found them intolerable, the buffered format is a meaningful improvement.
Results build gradually. In the first two weeks, expect the usual AHA/BHA experience — slight dryness, mild tingle, and possibly some purging as cell turnover accelerates and existing clogs work their way to the surface. By four to six weeks, the situation is different: visible reduction in blackheads, fewer new breakouts, smoother texture, and a gradual fading of post-inflammatory marks from old lesions. By eight to twelve weeks of consistent nightly use, the cumulative effect is a clearer, more evenly-toned face with meaningfully less active acne. The most dramatic results tend to come in users with persistent moderate oily-skin acne — the kind of adult acne that hangs around for years and resists simple benzoyl peroxide interventions. For this specific pattern, the multi-mechanism approach of Phys-AC Global is well-matched to the problem.
The main drawbacks are what you'd expect from a treatment cream with this active density. It is not suitable for dry or sensitive skin types — the acid load will be too much, and other options from A-Derma's Biology line or from simpler pharmacy brands are better starting points. It is not appropriate for rosacea or compromised barriers — both should be managed first with gentler products. It is not safe to combine with adapalene or tretinoin at the same application; alternate nights or use one in the morning and one at night if your dermatologist has signed off on that level of stacking. SPF is non-negotiable during the day, not just for the usual photoaging reasons but because AHAs increase photosensitivity and untreated sun exposure will undo the post-inflammatory pigmentation work the cream is attempting. And pregnancy use should be discussed with a healthcare provider — the salicylic and glycolic acid combination puts it in a cautious category for pregnant users.
For the specific job it's designed for — persistent oily-skin acne that needs a more comprehensive treatment than a single-active product — Phys-AC Global earns its place in the treatment-cream category. The combination of evidence-backed actives, the Myrtacine differentiator, and the buffered cream base make it one of the more serious pharmacy-level acne treatments you can buy over the counter. It is not a miracle, it is not going to fix severe cystic acne without prescription help, and it demands a cautious introduction and consistent sunscreen discipline. But for the users it's aimed at, it's a thoughtfully designed treatment cream that addresses more mechanisms of the acne process than most competing products at the same price point.
Formula
Key Ingredients
The hero actives that drive this product's performance.
| Ingredient | Function | Evidence |
|---|---|---|
| Myrtle Leaf Extract (Myrtacine) | A-Derma's branded myrtle extract, developed specifically to target the C. acnes biofilm rather than just the bacteria in planktonic form — this is the ingredient the Phys-AC line is built around and what differentiates it from conventional BHA-AHA treatments. | emerging |
| Salicylic Acid | Oil-soluble BHA that penetrates the follicle to decongest blockages, the primary exfoliant in the formula and the workhorse for the non-inflammatory component of the acne this cream targets. | well-established |
| Glycolic Acid + Lactic Acid + Citric Acid | AHA trio that works on the surface of the skin to accelerate cellular turnover and smooth texture — complementing the salicylic acid's deeper follicle work for a more complete exfoliating treatment. | well-established |
| Niacinamide | Regulates sebum output and reduces inflammation around active lesions — the combination with zinc PCA forms the anti-inflammatory backbone that makes this treatment tolerable despite the acid load. | well-established |
| Zinc PCA | Sebum-modulating zinc salt that pairs with niacinamide for the oiliness-reduction half of the treatment strategy, addressing the overproduction of sebum that drives the persistent acne this cream targets. | promising |
| Rhealba Oat Extract | A-Derma's anti-inflammatory signature appears here as the tolerance-enabling component — without it, the acid load in this formula would be harsher on acne-prone skin than it actually is in practice. | promising |
Ingredient standings describe the active at treatment-level doses and vehicles; this product's own condition grades weigh its actual formula.
Full INCI List · pH 3.8
Aqua, Propanediol, Glycerin, Caprylic/Capric Triglyceride, Myrtus Communis Leaf Extract, Avena Rhealba Extract, Salicylic Acid, Citric Acid, Glycolic Acid, Lactic Acid, Niacinamide, Zinc PCA, Dimethicone, Cetearyl Alcohol, Glyceryl Stearate, Tocopherol, Xanthan Gum, Disodium EDTA, Sodium Hydroxide, Phenoxyethanol
? Pregnancy Safety Unverified ✓ Fragrance Free✓ Alcohol Free✓ Oil Free✗ Silicone Free✓ Paraben Free✓ Sulfate Free✓ Cruelty Free✓ Vegan✗ Fungal Acne Safe
salicylic acidglycolic acidlactic acid
Compatibility
Skin Match
Routine Step
treatment
Time of Day
PM
Layering Tips
Apply a thin layer to the face in the evening after cleansing. Start 2-3 times per week and build up to nightly as tolerated. Always follow with a moisturizer and use SPF during the day.
Results Timeline
Short-term (1-2 weeks): initial increase in cell turnover may trigger mild purging. Mid-term (4-6 weeks): visible reduction in blackheads, fewer new breakouts, smoother texture. Full benefits (8-12 weeks): meaningful improvement in post-inflammatory hyperpigmentation and reduction in active lesion frequency.
A-Derma Biology AC moisturizergentle cleanserbroad-spectrum SPF
Planning a combo? Check it against what you already use retinoids in the same stepbenzoyl peroxide in the same stepother AHA/BHA products
See where it fits — layering order & night-splitting
Sample AM Routine
- Gentle cleanser
- Niacinamide serum
- Moisturizer
- SPF 50
Sample PM Routine
- Gentle cleanser
- THIS PRODUCT (every other night to start)
- Moisturizer
Evidence
Science & Expert Perspective
The Science
The active ingredient set in this cream is well-supported by clinical evidence. Salicylic acid is one of the two most evidence-backed topical acne treatments alongside adapalene, with decades of research documenting its comedolytic and anti-inflammatory effects in the follicle. A 2020 review in the Journal of Clinical and Aesthetic Dermatology summarized the clinical evidence for salicylic acid in acne, noting that leave-on formulations at 0.5 to 2% concentrations reliably reduce non-inflammatory lesions and contribute to overall acne management.
Alpha hydroxy acids — glycolic, lactic, and citric — work on the surface of the skin rather than in the follicle, accelerating cell turnover and improving texture. Their combined use in acne treatment is supported by a 2018 paper in the Journal of Cosmetic Dermatology that reviewed AHA and BHA combination products for acne management, concluding that combined formulations outperform single-acid products in real-world acne outcomes when tolerance is adequately addressed through buffering.
Niacinamide and zinc PCA form an anti-inflammatory and sebum-regulatory backbone that has become standard in modern acne skincare. A 2015 review in the Journal of Clinical and Aesthetic Dermatology summarized niacinamide's effect on sebum excretion rate, showing consistent reductions over 4 to 8 weeks of topical application at 2 to 4% concentrations. Zinc salts contribute additional sebum modulation through effects on 5-alpha reductase and inflammatory markers.
The Myrtacine component is the novel angle, and the evidence for it is more emerging than established. Pierre Fabre has published in-house research on a myrtle leaf extract's effect on C. acnes biofilm formation in vitro, showing disruption of quorum sensing and reduced biofilm thickness. The clinical translation of these in vitro findings to topical acne outcomes is less firmly established in independent literature, and the component should be regarded as an interesting secondary mechanism rather than a primary driver of the formula's effects. What makes this formulation clinically meaningful is that the well-established ingredients — salicylic acid, AHAs, niacinamide, and zinc — would already constitute a competent multi-mechanism acne cream on their own. Myrtacine is the dimension Pierre Fabre adds on top, and whether it produces measurable additional effects in clinical use is still being established.
Dermatologist Perspective
Dermatologists often recommend multi-active acne treatment creams as an adjunct to prescription therapy for patients with persistent moderate acne that hasn't responded to single-active approaches. Phys-AC Global is commonly cited in European dermatology practice as a pharmacy-brand option for patients who are using prescription retinoids on alternate nights and want a non-retinoid treatment layer on the off nights. From a clinical standpoint, the combination of salicylic acid, AHAs, niacinamide, and zinc in a single product is appropriate for oily and combination acne-prone skin but should be introduced gradually and paired with strict daily sunscreen use. It is not typically recommended for dry, sensitive, or rosacea-prone skin types.
Guidance
Usage & Recommendations
How to Use
Apply a thin layer to clean, dry skin in the evening. Start with 2 to 3 nights per week and build up to nightly as your skin adapts. Follow with a moisturizer (the A-Derma Biology AC cream is a natural pairing) to seal in the treatment and buffer any residual tingle. Use broad-spectrum SPF 50 every morning without exception — the AHAs increase photosensitivity. Do not combine with retinoids at the same step; alternate nights or split into AM/PM. Avoid the eye area and broken skin.
Value Assessment
At roughly 24 US dollars for 40ml, Phys-AC Global is priced in the middle of the pharmacy-brand acne treatment range. The 40ml tube lasts approximately 2 months with nightly use, putting monthly cost in line with other targeted pharmacy acne products. The cream is only available in the 40ml size. For users with persistent acne who are looking for a multi-active treatment and who don't tolerate raw high-strength acid products, the price is defensible — you're getting a buffered combination of actives that would be harder to assemble from individual products. Budget shoppers with straightforward acne can often get most of the same benefit from simpler combinations of The Ordinary's BHA and niacinamide serum, but the integrated formulation here is more comfortable to use.
Who Should Buy
Adults with persistent oily or combination acne who haven't responded well to single-active products, users looking for a multi-mechanism treatment cream at pharmacy-level pricing, and those who want a buffered formulation of acids that's more tolerable than raw high-strength peels.
Who Should Skip
Dry, sensitive, or rosacea-prone skin types, pregnant users without provider consultation, people who can't commit to daily sunscreen discipline, and those with severe cystic acne that needs prescription treatment. Users already stable on a retinoid-based routine probably don't need to add this cream.
Ready to try A-Derma Phys-AC Global Severe Blemish Care?
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Product Details
Texture
Light cream with a slight slip from the dimethicone; absorbs within a minute into a non-greasy semi-matte finish.
Scent
Fragrance-free.
Packaging
Airless pump tube in A-Derma pharmacy livery.
mattenon-greasyfast-absorbing
What to Expect on First Use
First few applications may produce a mild tingling sensation as the acid combination makes initial contact. Skin may briefly feel slightly drier than usual. Over the first two to three weeks, a mild purging effect is possible as cell turnover accelerates — this is normal for an AHA/BHA treatment and typically resolves into steadier improvement.
How Long It Lasts
40ml lasts approximately 2 months with nightly full-face application.
Best Season
All Year
cruelty-freeveganfragrance-free
Background
The Story Behind This Product
A-Derma's Phys-AC range was developed as the brand's direct answer to persistent and severe blemish-prone skin — a step up in treatment intensity from the Biology AC moisturizer. Pierre Fabre built the line around its Myrtacine research, pairing the myrtle extract with a well-studied acid and vitamin B3 stack to target the multiple mechanisms that drive chronic acne.
About A-Derma Legacy Brand (20+ years)
A-Derma's Phys-AC range is Pierre Fabre's acne-focused line, complementing the Biology AC moisturizer with more treatment-forward products that target active severe and persistent acne.
Brand founded: 1988 · Product launched: 2019
Myth vs. Reality
Common Myths
Myth
Mixing multiple acne actives always causes more irritation.
Reality
A well-buffered formula with oat and glycerin can combine multiple actives more tolerably than stacking them as separate products. The design of this cream specifically addresses that tolerance challenge.
Myth
Severe acne can be solved with a single over-the-counter cream.
Reality
Severe persistent acne typically requires prescription treatment. This cream is effective for persistent moderate acne and as an adjunct to prescription therapy, not as a standalone cure for severe cases.
FAQ
Frequently Asked Questions
Is Phys-AC Global strong enough for severe acne?
For persistent moderate acne, yes — users typically see visible improvement over 6 to 12 weeks. For truly severe acne with deep cysts and scarring, prescription treatment from a dermatologist is typically required; this cream can work as an adjunct but not as a standalone solution.
Can I use it every night?
Start with 2 to 3 applications per week and build up to nightly as your skin tolerates. Users with less reactive skin may move to nightly within 2 weeks; others may find every-other-night application is the sustainable level.
Will it cause purging?
Possibly. The AHA/BHA combination accelerates cell turnover, which can temporarily bring existing clogs to the surface in the first 2 to 3 weeks. If purging persists beyond 4 to 6 weeks or worsens, reduce frequency or consult a dermatologist.
Can I use it with adapalene or tretinoin?
Not at the same time. The retinoid-acid combination is too harsh for most users. Alternate nights — retinoid one night, Phys-AC Global the next — or use one in the morning and the other at night. Always with SPF during the day.
Does Phys-AC Global Severe Blemish Care contain anything to avoid during pregnancy?
Consult your healthcare provider. This cream contains salicylic acid and glycolic acid in combination. Low-concentration topical salicylic acid is generally considered acceptable during pregnancy but guidance varies, and many providers prefer azelaic acid as the pregnancy-safe alternative for acne.
Do I need sunscreen when using this cream?
Yes, non-negotiable. AHAs increase photosensitivity, and untreated acne-prone skin is vulnerable to post-inflammatory hyperpigmentation when exposed to UV. Broad-spectrum SPF 50 daily is essential when using any AHA/BHA product.
How does it compare to The Ordinary AHA 30 + BHA 2?
Very different. The Ordinary's product is a short-contact peel used weekly at very high acid concentrations. Phys-AC Global is a daily leave-on treatment with lower acid concentrations buffered by soothing ingredients. They serve different roles and can potentially complement each other if used carefully.
Community
What People Say
"visible reduction in blackheads after several weeks"
"works well on persistent oily acne"
"smoothes texture and post-acne marks"
"non-greasy finish layers well"
"can be drying when started nightly"
"initial purging possible in the first 2-3 weeks"
"40ml tube is small for the price"
"not suitable for sensitive skin"
recommended in French pharmacies for persistent adult acnefrequently paired with prescription adapalene in European dermatology