Niacinamide, a form of vitamin B3 (niacin), helps manage acne, rosacea, pigmentation issues, and wrinkles because of its anti-inflammatory properties. A 2 percent topical niacinamide may also inhibit the production of oil, which could be beneficial to people dealing with acne. In addition, niacinamide is relatively non-irritating compared to other acne treatments, making it an especially attractive option for people with dry or sensitive skin.
Studies suggest that prescription retinoids (and sunscreen!) or other antioxidants, like vitamin C, will probably do more for you than niacinamide if hyperpigmentation, fine lines, or wrinkles are your primary concerns. But if your skin is too sensitive to handle those other options, or you’re just looking for a gentler treatment for whatever reason, niacinamide might be a helpful alternative.