The DERMA FACTORY Niacinamide 20% Serum is a potent vitamin formula designed to soothe and moisturize the skin while providing brightening effects and improving concerns like blemishes and dullness. Its high concentration of niacinamide helps to calm irritated skin and promote a smooth, healthy, and radiant complexion. Suitable skin types: Combination Skin, Dry Skin, Normal Skin, Oily Skin, Sensitive Skin.