Niacinamide 10% + Zinc 1% visibly improves skin radiance and smooths texture, Lightweight water-based serum that reinforces the skin barrier and provides hydration in as little as 7 days, High 10% concentration of Niacinamide (Vitamin B3) and 1% Zinc PCA to help control oil in 3 days, Apply a few drops to the face in the morning and evening. Patch test before use and avoid broken skin.