Our 5-in-1 facial serum contains hyaluronic acid, niacinamide, and vitamin C. It can whiten skin, lighten dark spots, remove wrinkles, anti-aging and increase skin activity. Its usage method is very simple: after cleansing and drying your face, take out this product, squeeze an appropriate amount onto your palm or face, apply evenly on the face, and gently massage until fully absorbed. Skin whitening, improve dull complexion, regulate skin tone evenness, lighten dark spots, reduce melanin production, fade skin spots and acne marks, deeply penetrate and moisturize skin, improve dry and rough skin, anti-aging, firm skin, improve skin sagging, reduce wrinkles.