The Ordinary Niacinamide 10% + Zinc 1% Serum is a lightweight, water-based facial serum formulated with a high concentration of Niacinamide and Zinc PCA to help improve the appearance of uneven skin tone, excess oil, enlarged pores, and skin texture. Niacinamide (Vitamin B3) helps brighten dull-looking skin, minimize the appearance of pores, and support a healthy skin barrier, while Zinc PCA helps regulate excess sebum. With regular use, the serum leaves skin looking smoother, clearer, more balanced, and radiant.