Our nicotinamide serum contains glycerin, panthenol, and PCA sodium. It soothes and cools the skin, helps balance skin tone, reduces pores, whitens skin tone, reduces dark spots and dullness, and locks in skin moisture. Its use method is very simple: after cleansing and toning, take 2-3 drops of essence evenly apply to the face, gently massage with your hand in circles until absorbed. Niacinamide serum effectively improves uneven dark skin tone and leaves skin glowing.