Beauty
Niacinamide
Definition
Vitamin B3. One of the most well-studied skincare actives. At 5% concentration: minimises pore appearance, regulates sebum production, and delivers clinically proven brightening. At 10%: adds additional barrier-repair and anti-inflammatory effects. Highly stable across pH ranges, compatible with most actives.
Why it matters for dupe shopping
Niacinamide is inexpensive — the raw ingredient costs cents per gram. Any brand charging a premium specifically for niacinamide is selling brand equity, not ingredient value. The Ordinary 10% Niacinamide + Zinc ($7) delivers the same concentration as niacinamide-forward luxury serums at $60–$150. Look for 5% minimum on the INCI list.