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Good Molecules Niacinamide Serum ingredients: is it worth it?
A legitimately effective, dirt-cheap niacinamide serum—but the 10% dose is unnecessarily aggressive for irritation-prone skin.

A legitimately effective, dirt-cheap niacinamide serum—but the 10% dose is unnecessarily aggressive for irritation-prone skin.
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The efficacy score is 3.6/5: niacinamide is the second ingredient and is marketed at 10%, a concentration with evidence for improving oil regulation, appearance of pores, barrier function, and uneven tone, while glycerin and betaine provide useful hydration. The minimalist water-based formula has no obvious pH or packaging advantage documented here, and it lacks complementary barrier lipids or additional brightening agents, so it does not merit an elite score. Its safety score is 4.5/5 because the formula is fragrance-free and short, but 10% niacinamide can cause flushing, stinging, or breakouts in some users.
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DemythSkin rates Good Molecules Niacinamide Serum 3.6/5 for efficacy and 4.5/5 for safety.
ACTIVE INGREDIENTS BY TIER
Gold Standards
High clinical proof | Skin-transformativeReliable
Proven resultsPotent
Developing evidenceOverhyped | Marketing
Hype | Limited dataDocumented Irritants
Evidence-backed flagFORMULATION BASE (6)⌄
FULL INGREDIENT LIST⌄
Water, Niacinamide, Dipropylene Glycol, 1,2-Hexanediol, Glycerin, Betaine, Ammonium Acryloyldimethyltaurate/VP Copolymer, Xanthan Gum, Ethylhexylglycerin.
WHAT EACH INGREDIENT DOES (9)⌄
- Water
- Solvent and formula base
- Niacinamide
- Vitamin B3 skin-conditioning active
- Dipropylene Glycol
- Solvent and humectant
- 1,2-Hexanediol
- Solvent and preservative booster
- Glycerin
- Humectant and water binder
- Betaine
- Humectant and osmolyte
- Ammonium Acryloyldimethyltaurate/VP Copolymer
- Thickener and emulsion stabilizer
- Xanthan Gum
- Viscosity modifier and stabilizer
- Ethylhexylglycerin
- Preservative booster and skin conditioner
EXTERNAL CITATIONS
Niacinamide: Clinical evidence supports topical niacinamide for barrier support, uneven pigmentation, sebum regulation, and visible signs of photoaging.
Glycerin: Well-established topical humectant that increases stratum-corneum hydration.
DISCLAIMER: THIS ANALYSIS IS FOR INFORMATION ONLY. NOT MEDICAL ADVICE. AI-GENERATED DATA BASED ON PUBLICLY AVAILABLE INGREDIENT LISTS. VERIFY WITH A MEDICAL PROFESSIONAL.
Good Molecules Niacinamide Serum: common questions
Is Good Molecules Niacinamide Serum worth it?
Good Molecules Niacinamide Serum scores 3.6 out of 5.0 for efficacy (Modest) and 4.5 out of 5.0 for safety (Very Gentle) on DemythSkin's independent ingredient analysis. A legitimately effective, dirt-cheap niacinamide serum—but the 10% dose is unnecessarily aggressive for irritation-prone skin.
What are the key active ingredients in Good Molecules Niacinamide Serum?
Good Molecules Niacinamide Serum contains no gold-standard actives. Its formula is built on supporting and base ingredients rather than clinically transformative actives.
Does Good Molecules Niacinamide Serum contain fragrance or known irritants?
DemythSkin's analysis found no flagged irritants in Good Molecules Niacinamide Serum. It scores 4.5 out of 5.0 for safety.
How is Good Molecules Niacinamide Serum scored?
DemythSkin grades every product on two independent scores: efficacy (whether the ingredients have clinical evidence of working) and safety (irritation and sensitisation risk). Ingredients are graded S through D against a database of over 3,000 compounds. Brand and price are not part of the score, and no brand pays for one.
Free scores for every product in the database, or see them on Sephora, Ulta and Amazon with the Chrome extension.