Olay Luminous Serum is a skincare product that is formulated to help improve the overall texture and tone of the skin, while also helping to reduce the appearance of fine lines and wrinkles. It is formulated with 99% pure niacinamide, which is a type of vitamin B3 that helps to improve the appearance of uneven skin tone and texture, while also helping to reduce the appearance of fine lines and wrinkles. It is also formulated with a blend of ingredients that help to moisturize and nourish the skin.