Somethinc 5% Niacinamide + Moisture Sabi Beet Serum, an affordable brightening serum with niacinamide, centella asiatica water, beet root, and tetrahydrocurcumin
Not yet assessed for Dullness
What Makes This Different

Instead of pushing niacinamide to an irritating high percentage, this serum keeps it at a comfortable 5% and builds the entire base from centella asiatica water rather than plain water, so the active is delivered on a soothing carrier. The 'Sabi Beet' twist adds beet root and tetrahydrocurcumin antioxidants for brightening, all at a price well under comparable Western niacinamide serums.

Somethinc

Somethinc 5% Niacinamide + Moisture Sabi Beet Serum Review

Budget Brightening Serum
serum serum indie Paraben Free Cruelty Free Vegan

Somethinc's Sabi Beet serum is a smartly restrained take on the niacinamide serum: 5% rather than a flush-inducing 10%+, carried on a soothing centella-water base instead of plain water, with beet root and tetrahydrocurcumin antioxidants rounding out the brightening. It works gradually and the 20ml bottle is small, but at this price it's one of the easiest budget brightening serums to recommend.

$10.00
20ml · other sizes available
4.5 ★★★★★
3,000 reviews
Made in South Korea Launched 2020 All-year use PAO: 12 months
Buy at Amazon ♥
Run it through our tools Clashes with my routine? Pregnancy-safe? Find a cheaper dupe Patch-test it first

This score draws on a large but mostly Southeast Asian review base built up since the serum's early-2020s rise, combined with the deep, well-replicated evidence behind niacinamide at this concentration. Lighter is the data on the beet root and tetrahydrocurcumin additions, whose real-world contribution is harder to quantify, and the brand's short history means independent long-term validation is still thinner than for legacy labels.

Verdicts

How well it fits each concern

Verdict by concern tap a concern for the case

Good choicefor HyperpigmentationNiacinamide is a trial-supported active for hyperpigmentation; this serum carries it at 5%.Moderate evidenceGentleNo reviews collected yet

The case for it

  1. Niacinamide 5% has trial-supported standing for this concern.
  2. It is present at an effective concentration, declared or high in the ingredient list.
  3. The formula carries none of the triggers this concern is sensitive to.

Same rule for everyone. “Good choice” is the verdict on 9,564 of 45,024 concern verdicts across the catalog; rule R5 decided 9,072 of them. Unchanged since September 5, 2026, engine 5.1.1.

Brand or formulator? Disclose a concentration or correct a fact →

Show the work
Rule
R5 — Trial-supported or guideline-supported active, adequately or plausibly dosed. · the full register
Carrying active
Niacinamide 5%
Standing
supported — trials support it
Form
adequate (declared 5%) — studied range 2–5%, from the trials on the row; needs leave-on contact; judge it after ~8 weeks
Tolerability
gentle
Row checked
against its sources on July 17, 2026 (evidence table ev-2026.09-r228)

The studies behind the evidence row

All hyperpigmentation products →
Supporting rolefor DehydrationNothing here targets dehydration directly; humectant hydration is the recognised companion to treating it, and this serum does that without known triggers.Not yet assessedGentleNo reviews collected yet

The case for it

  1. Centella Asiatica Water has no evidence row yet for this concern — it is in the research queue.
  2. The formula carries none of the triggers this concern is sensitive to.

What would change this: A researched evidence row for the lead active would replace this with a verdict.

Same rule for everyone. “Supporting role” is the verdict on 8,197 of 45,024 concern verdicts across the catalog; rule R8 decided 4,250 of them. Unchanged since September 5, 2026, engine 5.1.1.

Brand or formulator? Disclose a concentration or correct a fact →

Show the work
Rule
R8 — The category's job (barrier care, humectant hydration, gentle cleansing, photoprotection) is the documented supportive role for this concern. This is the honest verdict for a moisturizer on an acne page. · the full register
Carrying active
Centella Asiatica Water
Standing
not assessed
Form
plausible (declared 72.5%)
Tolerability
gentle
All dehydration products →
Promisingfor Large PoresNiacinamide has trial-level evidence for large pores but no guideline or regulatory standing yet — promising, short of a recommendation; the other actives here are not yet assessed for it.Moderate evidenceGentleNo reviews collected yet

The case for it

  1. Niacinamide 5% has trial-level evidence for this concern but no guideline or regulatory standing yet.
  2. It is present at an effective concentration, declared or high in the ingredient list.
  3. The formula carries none of the triggers this concern is sensitive to.

What would change this: Guideline or regulatory standing for the active on this concern would move this from a promising bet to a recommendation.

Same rule for everyone. “Promising” is the verdict on 7,858 of 45,024 concern verdicts across the catalog; rule R9p decided 7,858 of them. Unchanged since September 5, 2026, engine 5.1.1.

Brand or formulator? Disclose a concentration or correct a fact →

Show the work
Rule
R9p — 0.5.0: 'Unproven' beside three filled dots read as one question answered twice with opposite words (7,018 rows). The chip measures standing, the dots measure trial volume; where the row carries at least one RCT or a tier-2 source (moderate dots) and the active is present at a working level, the honest word is Promising. Unproven is reserved for plausible-standing rows with limited or weak evidence, or an under-dosed form. Same rank as Unproven — a bet either way; the dots order them. · the full register
Carrying active
Niacinamide 5%
Standing
plausible — trials support it
Form
adequate (declared 5%) — studied range 4%, from the trials on the row; needs leave-on contact; judge it after ~8 weeks
Tolerability
gentle
Row checked
against its sources on July 17, 2026 (evidence table ev-2026.09-r228)

The studies behind the evidence row

All large pores products →
Promisingfor Excess OilinessNiacinamide has trial-level evidence for excess oiliness but no guideline or regulatory standing yet — promising, short of a recommendation; the other actives here are not yet assessed for it.Moderate evidenceStandard tolerabilityNo reviews collected yet

The case for it

  1. Niacinamide 5% has trial-level evidence for this concern but no guideline or regulatory standing yet.
  2. It is present at an effective concentration, declared or high in the ingredient list.
  3. The formula carries no trigger this concern is sensitive to, with the cautions noted.

Cautions: fungal-acne triggers.

What would change this: Guideline or regulatory standing for the active on this concern would move this from a promising bet to a recommendation.

Same rule for everyone. “Promising” is the verdict on 7,858 of 45,024 concern verdicts across the catalog; rule R9p decided 7,858 of them. Unchanged since September 5, 2026, engine 5.1.1.

Brand or formulator? Disclose a concentration or correct a fact →

Show the work
Rule
R9p — 0.5.0: 'Unproven' beside three filled dots read as one question answered twice with opposite words (7,018 rows). The chip measures standing, the dots measure trial volume; where the row carries at least one RCT or a tier-2 source (moderate dots) and the active is present at a working level, the honest word is Promising. Unproven is reserved for plausible-standing rows with limited or weak evidence, or an under-dosed form. Same rank as Unproven — a bet either way; the dots order them. · the full register
Carrying active
Niacinamide 5%
Standing
plausible — trials support it
Form
adequate (declared 5%) — studied range 2%, from the trials on the row; needs leave-on contact; judge it after ~8 weeks
Tolerability
standard — fungal triggers
Row checked
against its sources on July 17, 2026 (evidence table ev-2026.09-r228)

The studies behind the evidence row

All excess oiliness products →

Also listed for Dullness — the actives here (Centella Asiatica, Niacinamide, Adenosine, Botanical Extracts) are in our research queue for that concern; there is no verdict until their evidence rows are written. That is a gap in our table, not a mark against the product.

A verdict is DermApproved’s assessment of how well a product’s ingredients fit a concern — never a claim about what the product treats. Evidence dots and collected reviews sit beside it and are never blended in. Rules 0.5.1 · evidence table ev-2026.09-r228 · how we decide

Assessment

Pros & Cons

Pros

  • ✓ Sensible 5% niacinamide avoids flushing
  • ✓ Entire base is soothing centella asiatica water
  • ✓ Hydrating rather than drying or tacky
  • ✓ Beet root and tetrahydrocurcumin add antioxidant brightening
  • ✓ Fragrance-free and broadly tolerable
  • ✓ Outstanding value versus Western niacinamide serums
  • ✓ Pregnancy-friendly with no restricted actives

Cons

  • ✗ Small 20ml bottle empties in weeks
  • ✗ Brightening is gradual, not a quick fix
  • ✗ Not fungal-acne safe due to polysorbate and laurate
  • ✗ Beet and curcumin benefits rest on lighter evidence
  • ✗ Mostly available in Southeast Asia
Review

Full Review

For a few years there, niacinamide serums were locked in a quiet arms race. Ten percent, twelve, twenty — brands kept stacking the number higher as if concentration alone were the whole story, and plenty of users ended up with flushed, blotchy faces wondering why their gentle little vitamin was burning. Somethinc's Sabi Beet serum is interesting precisely because it refuses to play that game. It sits at 5%, and once you understand why, the rest of the formula falls into place.

The evidence on niacinamide actually supports the lower number. The studies behind its tone-evening and barrier-supporting reputation mostly used concentrations in the 2-5% range, and pushing past that buys you very little extra benefit while sharply raising the odds of irritation. So 5% here isn't Somethinc cutting corners — it's the brand choosing the dose that works without the sting. This is one of the few places in skincare where the number on the front of the bottle is inversely correlated with how much thought went into the back of it.

And then it goes a step further. Instead of plain water, the entire base of the serum is centella asiatica water, listed at a striking 72.5%. That means the soothing centella compounds aren't a token botanical near the bottom of the list; they're the carrier that everything else rides in on. Niacinamide delivered on a calming base is far easier on reactive skin than the same percentage in a bare aqueous serum, and swapping out water for something that does a job is a formulator's decision rather than a marketer's.

The 'Sabi Beet' part of the name points to the supporting cast. Beet root extract brings betalain antioxidants and a little moisture-binding sugar, and alongside it sits tetrahydrocurcumin — a colorless, stable derivative of turmeric that delivers antioxidant brightening without the yellow stain real turmeric would leave on your pillowcase. It's a clever inclusion: it complements the niacinamide's gradual tone-evening from a different angle, antioxidant rather than enzymatic. There's also a quiet dose of adenosine for a touch of smoothing and collagen support, plus chamomile, allantoin, caffeine, betaine, and vitamin E filling out the soothing-and-antioxidant theme. None of these are blockbuster actives on their own, but they're coherent — every addition supports the brightening-and-comfort brief rather than scattering in random directions, which is more discipline than most budget serums manage.

In use, it's a pleasure for a niacinamide serum. The texture is light and slightly slippy, sinking in fast to a soft, faintly dewy finish rather than the tacky film some niacinamide formulas leave. It's fragrance-free, with just a faint herbal note from the centella, and the hydration is genuinely noticeable — this is the rare niacinamide serum that leaves skin feeling more comfortable, not tighter. Most people will tolerate it from day one, though anyone who has never used niacinamide before should keep an eye out for mild warmth in the first few applications, and can sensibly start with once-daily use for a week before moving to twice.

On expectations, some calibration helps. Niacinamide works on pigment by interfering with the handoff of finished melanin from the cells that make it to the cells you can see. That is a slow, cumulative process — you're looking at three to four weeks for visibly more even tone and a couple of months for the fuller effect — and it collapses entirely if you skip sunscreen, since fading spots while manufacturing new ones at the same rate is the most common way brightening routines quietly fail. The serum is a foundation, not a spot corrector.

The limitations are modest and mostly about scale and pace. The 20ml bottle is small and empties in five or six weeks of twice-daily use, so the per-month cost is a little higher than the sticker suggests, though there's a larger 'Max' version for heavier users. And it's worth flagging that the polysorbate 20 and polyglyceryl laurate make it not strictly fungal-acne safe, which matters if you're managing malassezia. The beet and curcumin, for all their charm, rest on considerably lighter evidence than the niacinamide does; treat them as pleasant company rather than reasons to buy. None of these are dealbreakers; they're just the honest edges of an otherwise easy serum.

Where it really closes the deal is value. Somethinc is a young brand without the decades of clinical pedigree of a derm-developed label, but it isn't asking you to trust anything exotic — niacinamide at 5% is one of the most reliable actives in skincare, and the centella base is a smart, well-evidenced delivery choice. It's fragrance-free, alcohol-free, vegan, and pregnancy-safe, with nothing in it that argues with a retinoid or an acid used at the other end of the day. For a fraction of what comparable Western niacinamide serums cost, you get a gentler, more hydrating, thoughtfully built formula. If you want a brightening serum that won't fight your skin and won't dent your budget, this is a very easy yes.

Formula

Key Ingredients

The hero actives that drive this product's performance.

IngredientFunctionEvidence
Niacinamide 5% (5%) Held at a sensible 5% rather than the eye-watering 10-20% that triggers flushing — at this dose it evens tone and supports the barrier without the sting, which fits a serum that pairs it with a calming centella base rather than chasing maximum strength. Emerging for Hyperpigmentation
Centella Asiatica Water (72.5%) (72.5%) Replaces plain water as the entire base of the serum, so the soothing centella compounds are the carrier for everything else — this is what lets the niacinamide be delivered to reactive skin without the irritation a water-based 5% serum might otherwise cause. Not yet assessed
Beet Root Extract + Tetrahydrocurcumin The 'Sabi Beet' signature — beet root brings betalain antioxidants and a touch of moisture-binding sugars, while tetrahydrocurcumin (a colorless, stable turmeric derivative) adds antioxidant brightening that complements the niacinamide's tone-evening without staining the skin. Not yet assessed
Adenosine A low-dose smoothing active that signals for collagen support and helps soften fine texture — a quiet anti-aging nudge layered into what is primarily a brightening-and-moisture formula. Not yet assessed
Full INCI List

Centella Asiatica Extract (72.5%), Niacinamide (5%), Methylpropanediol, Betaine, Water, Glycerin, Polysorbate 20, Ammonium Acryloyldimethyltaurate/VP Copolymer, Polyglyceryl-10 Laurate, Tetrahydrocurcumin, Butylene Glycol, Xanthan Gum, Ethylhexylglycerin, Adenosine, Anthemis Nobilis Flower Extract, Beta Vulgaris (Beet) Root Extract, Allantoin, Caffeine, Tocopherol (Vitamin E), 1,2-Hexanediol

Safety & Formulation Facts
✓ Pregnancy Safe ✓ Fragrance Free✓ Alcohol Free✓ Oil Free✓ Silicone Free✓ Paraben Free✓ Sulfate Free✓ Cruelty Free✓ Vegan✗ Fungal Acne Safe
Potential Irritants
Niacinamide
Compatibility

Skin Match

Best For
Works For
Routine Step

serum

Time of Day

AM & PM

Layering Tips

Apply to clean skin before moisturizer. Layers well under or over hydrating serums; in the AM follow with sunscreen to support the brightening work. Pairs fine with most actives but space apart from strong acids if your skin is reactive.

Results Timeline

Immediate hydration and a soft glow; visibly more even tone and less dullness within 3-4 weeks; fuller brightening and pore-refining benefits over 8 weeks of consistent use.

Pairs Well With
moisturizersunscreenhyaluronic-acid
Planning a combo? Check it against what you already use
Sample AM Routine
  1. Cleanser
  2. Somethinc 5% Niacinamide + Moisture Sabi Beet Serum
  3. Moisturizer
  4. Sunscreen
Sample PM Routine
  1. Cleanser
  2. Somethinc 5% Niacinamide + Moisture Sabi Beet Serum
  3. Moisturizer
Evidence

Science & Expert Perspective

The Science

The serum's backbone is niacinamide at 5%, a concentration squarely within the range used in the clinical literature behind the ingredient's reputation. Niacinamide has documented effects on improving uneven pigmentation, supporting the production of barrier lipids and ceramides, reducing transepidermal water loss, and regulating sebum, with studies typically using 2-5% — so the 5% here is an efficacy-backed, tolerability-conscious choice rather than an underdose. Building the base from centella asiatica water is the formulation's cleverest move: it means the soothing triterpenoids of centella are the delivery vehicle, which can blunt the mild irritation niacinamide occasionally causes. The supporting actives have a lighter evidence base: tetrahydrocurcumin is a stable, colorless curcuminoid with demonstrated antioxidant and tyrosinase-inhibiting activity in lab settings, beet root contributes betalain antioxidants, and adenosine has reasonable support as a signal for smoothing and collagen support. The overall formulation logic is consistent — a well-evidenced primary active, a soothing carrier, and a cluster of antioxidants that reinforce the brightening direction rather than introduce unrelated claims.

Dermatologist Perspective

Niacinamide is among the actives dermatologists most often endorse, valued for its ability to even tone, support the barrier, and regulate oil with an excellent tolerability profile. Concentrations in the range used here are generally considered sufficient, and clinicians frequently note that very high percentages offer little added benefit while increasing the chance of flushing. Centella asiatica derivatives are likewise commonly recommended for their soothing and barrier-supportive properties, making a centella-based delivery system a sensible pairing for sensitive or reactive skin. The supporting antioxidants are typically regarded as helpful adjuncts rather than primary treatments. As always, the standard guidance applies: introduce a new serum gradually, pair daytime use with sunscreen to support any brightening effect, and patch test if your skin is prone to reactivity.

Guidance

Usage & Recommendations

How to Use

After cleansing, dispense a few drops and press evenly over the face morning and night, avoiding the immediate eye area. Follow with a moisturizer, and in the morning always finish with sunscreen to protect and support the brightening work. It layers comfortably with most other serums and actives; if your skin is reactive, you can simply space it apart from strong acids or retinoids by using them at opposite ends of the day. Those new to niacinamide may want to start once daily for the first week before moving to twice-daily use.

Value Assessment

This is where the serum earns its reputation. At its price it dramatically undercuts comparable niacinamide serums from Western brands, while offering a more thoughtful formula than most — a tolerable 5% dose, a soothing centella-water base, and a cluster of antioxidant extras. The main value caveat is the 20ml size, which runs through in roughly five to six weeks of twice-daily use, nudging the real monthly cost up; happily, a larger 'Max' version exists for those who go through it quickly. There's no brand-prestige markup here, and for budget-conscious users wanting effective, gentle brightening, the price-to-formula ratio is hard to beat.

Who Should Buy

Anyone wanting affordable, gentle brightening and tone-evening without the flush of high-percentage niacinamide serums. It suits most skin types, including those who've found other niacinamide products drying, and budget-focused users who want a thoughtfully built formula rather than a single-ingredient gimmick.

Who Should Skip

Skip it if you're managing fungal acne, since the polysorbate and laurate can feed malassezia, or if you want rapid, dramatic dark-spot fading — this works gradually. Heavy users may find the 20ml size too small to be economical and should look to the larger Max version instead.

Ready to try Somethinc 5% Niacinamide + Moisture Sabi Beet Serum?

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Details

Product Details

Texture

Lightweight slightly slippy serum that absorbs to a soft non-tacky finish

Scent

Fragrance-free with a faint herbal note from the centella base

Packaging

Frosted glass dropper bottle

Finish
lightweightfast-absorbingglowy
What to Expect on First Use

Sinks in quickly and leaves a soft, slightly dewy glow without the tightness or flush some higher-percentage niacinamide serums cause. Most skin tolerates it immediately, though anyone new to niacinamide should watch for mild warmth in the first few uses.

How Long It Lasts

About 5-6 weeks at twice a day

Period After Opening

12 months

Opened yours? Track the toss-by date
Best Season

All Year

Certifications
vegancruelty-free
Background

The Story Behind This Product

Somethinc launched in 2019 and this niacinamide serum was among the products that put it on the map, helping turn a young Indonesian brand into a regional skincare heavyweight. The 'Sabi Beet' naming nods to its beet-root and centella signature, positioning it as a gentler, more hydrating take on the niacinamide serums that flooded the market in the late 2010s.

About Somethinc Established Brand (5–20 years)

Somethinc, founded in Indonesia in 2019, built much of its early reputation on this niacinamide serum, which became one of its breakout sellers. It manufactures in South Korea and formulates around well-studied actives, but as a young brand its independent clinical track record remains limited.

Brand founded: 2019 · Product launched: 2020
Myth vs. Reality

Common Myths

Myth

A niacinamide serum has to be 10% or higher to work.

Reality

Higher isn't automatically better. Research supports tone-evening and barrier benefits from niacinamide at concentrations around 4-5%, and going higher mainly raises the risk of flushing and irritation. This 5% level on a centella base is chosen for tolerability, not as a compromise on efficacy.

FAQ

Frequently Asked Questions

How strong is the niacinamide in this Somethinc serum?

It's a 5% niacinamide concentration — a level well supported for evening tone and supporting the barrier while staying comfortable. It's deliberately lower than the 10%+ serums that more often cause flushing, and it sits on a soothing centella-water base.

What is the 'Sabi Beet' in the name?

It refers to the beet root extract and the wider antioxidant blend, including tetrahydrocurcumin (a colorless turmeric derivative). Together they add antioxidant brightening that complements the niacinamide's tone-evening, without the staining real turmeric would cause.

Will this serum sting or cause flushing?

It's far less likely to than high-percentage niacinamide serums. At 5% on a centella base, most people use it comfortably, though anyone completely new to niacinamide may feel mild warmth for the first few applications before skin adjusts.

Is the Sabi Beet serum fungal-acne safe?

Not strictly — it contains polysorbate 20 and polyglyceryl laurate, which can feed malassezia for those who are sensitive. If you're managing fungal acne, this isn't the safest pick despite its otherwise gentle profile.

Can I use it with vitamin C or acids?

Yes — niacinamide pairs fine with most actives, and the old myth that it cancels out vitamin C has been debunked. If your skin is reactive, you might apply them at different times of day simply to minimise overall load, but there's no chemical conflict.

Is the 5% Niacinamide + Moisture Sabi Beet Serum considered pregnancy-friendly?

The formula contains no retinoids, high-strength acids, or other commonly restricted actives, so it's generally regarded as pregnancy-friendly. Check your whole routine with your doctor if you have any concerns.

Reviews

What Reviewers Tend to Say

Recurring themes our editors read across retailer reviews of this product — summaries in our words, not quotations, and not a substitute for your own patch test.

Common Praise

Brightens and evens tone gently

Hydrating rather than drying like many niacinamide serums

No niacinamide sting at 5%

Excellent price for the formula

Lightweight and layers easily

Common Complaints

Small 20ml bottle

Brightening is gradual, not dramatic

Not fungal-acne safe due to polysorbate/laurate

Mainly available in Southeast Asia

Notable Endorsements
One of Somethinc's breakout serumsCentella-water baseFragrance-free niacinamide formula
Appears In
Serums That Suit Large PoresNiacinamide for Large Pores: What the Verdicts SayBest Centella SerumsBest Affordable SerumsBest Serums Under $25
Related Conditions
dullnesshyperpigmentationdehydrationlarge poresexcess oiliness
Related Ingredients
niacinamidecentella asiaticaadenosine