Ingredient
Niacinamide
No known concerns Strong evidence Active
Well-tolerated active
Vitamin B3 derivative. Strongly evidenced for barrier support, oil regulation, and hyperpigmentation. CIR-reviewed safe at typical cosmetic concentrations.
On the plus side
Strengthens skin barrier, reduces transepidermal water loss, evens skin tone, and modulates sebum. Well-studied at 2–10% concentrations.
Sources
GlowOS describes what regulatory bodies and published research say about an ingredient — it does not tell you what to use or avoid, and none of this is medical advice. Concentration, formulation, and your own skin all matter. For skin conditions, see a dermatologist.
GlowOS scores every product on your shelf from its full ingredient list — learn more.