Niacinamide

Niacinamide is the amide form of vitamin B3 (nicotinic acid), synthesized through the reaction of nicotinic acid with ammonia. It's one of the most versatile and well-researched cosmetic actives, clinically proven to strengthen the skin barrier by increasing ceramide production, regulate sebum production, reduce hyperpigmentation by inhibiting melanosome transfer, and provide anti-inflammatory benefits. Formulators favor it for its exceptional stability across a wide pH range (unlike many vitamins), its compatibility with nearly all other ingredients, and its ability to deliver visible results at concentrations of 2-10% without causing irritation.