Our Retinol Collagen Age-Defying Care Serum contains collagen, retinol and niacinamide. It can smooth fine lines and wrinkles, improve skin elasticity, make skin firmer and smoother, add moisturizing ingredients, can deeply moisturize skin, improve dull skin, effectively reduce dark spots and blemishes. The way to use it is very simple: clean the face, evenly apply the cream to the face, and gently massage until it is completely absorbed. It can smooth out fine lines and wrinkles, improve dull skin, effectively reduce dark spots and blemishes, and make your skin look firmer, smoother and brighter.