A brightening serum containing 10% Niacinamide, which is the same as niacinamide in SK-II, Arbutin, Ceramide and Centella Asiatica. Can brighten quickly, remove acne scars and sunburn marks in 7 days. The niacinamide used is the best niacinamide in the world, Royal DSM Niacinamide, which can protect the skin barrier and brighten deeply.