Our 5 in 1 facial serum contains hyaluronic acid, niacinamide and vitamin C. It hydrates deeply and reduces the appearance of fine lines and wrinkles, thereby maintaining the skin's youthful appearance. Its use method is very simple: after cleansing and toning, apply appropriate amount of this product evenly on the face, gently massage with your hand until absorbed. Regular use will leave skin smooth, glowing and looking younger.