Skin Conditioning
NIACIN
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
Niacin (vitamin B3, free acid form) — the parent of niacinamide. Skin-beneficial but the free-acid form causes flushing/redness, so cosmetics usually prefer niacinamide.
Function
Skin benefits
- Vitamin B3
- Antioxidant
- Brightens skin tone
- Barrier support
Known concerns
- Skin flushing/redness
- Histamine-mediated sensitivity
- Less stable than niacinamide
References
EU CosIng database
European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.
PubChem
U.S. NIH compound data, GHS hazard codes and toxicity literature.
Related skin conditionings
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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.