Olay Luminous Niacinamide + Vitamin C Super Serum brightens the skin for a radiant glow. The concentrated formula is non- greasy and absorbs quickly while penetrating 10 skin surface layers deep to reveal an even skin tone and texture. It is suitable for those with uneven and dull skin. Key Ingredients: niacinamide (Vitamin B3) inhibits melanin transfer, vitamin C is an antioxidant that inhibits melanin production, pro-vit B5 soothes and moisturizes the skin, vitamin E is an oil-soluble antioxidant which protects against free radical damage.