Our Collagen Face Serum contains collagen, glycerin and nicotinamide. It can help improve dry/dull/rough skin, firm the skin, improve skin elasticity, and effectively fade facial fine lines. Its use method is very simple: clean the facial skin, take 2-3 drops of essence evenly applied to the facial skin, and gently massage with the hand to absorb. Can promote collagen synthesis, reduce facial fine lines, firm skin.