What Is Niacinamide? Complete Skincare Guide

Niacinamide is vitamin B3 — a water-soluble skincare active that regulates oil production, reduces pore appearance, fades hyperpigmentation, and strengthens the skin barrier. Works at 2-10% concentration topically. Safe for all skin types including pregnancy and breastfeeding. Pairs with everything.

Niacinamide proven benefits: regulates sebum production (oil control), reduces visible pore size (8-12 weeks), fades post-inflammatory hyperpigmentation, strengthens skin barrier, reduces fine lines (at 5%+ concentration), anti-inflammatory. One of the best-researched ingredients in skincare — decades of peer-reviewed data.

Niacinamide concentrations: 2-5% gentle (sensitive skin, daily use). 5-10% standard (most skin types, visible results at 8-12 weeks). 10%+ aggressive (can cause irritation in sensitive skin, fastest results). Start at 5% if new; progress to 10% if tolerated.

Yes. The old “niacinamide + vitamin C cancel each other out” myth is based on 1960s research using unstable forms at high temperatures — not modern formulations. Current research + clinical experience confirms they work well together. Apply vitamin C first, wait 60 seconds, then niacinamide.

Niacinamide results timeline: 2-4 weeks — subtle improvement in oil production and pore appearance. 4-8 weeks — visible PIH fading, pore size reduction. 8-12 weeks — full effect, maintenance phase. Consistency matters more than concentration above 5%.