Our firming serum contains glycerin, vitamin E (tocopherol). It locks in moisture and provides an adequate supply of moisture to the skin: leaving the skin looking softer and smoother. Its application method is very simple: clean facial skin, keep skin dry, apply appropriate amount of this product on facial skin, gently massage until absorbed. It can deeply moisturize and repair fine lines caused by dryness, leaving skin smooth and delicate, and restoring youthful luster.