This penetrating serum provides the skin with a powerful combination of GHK Copper Peptide Complex® and antioxidants to protect the skin from the environment while promoting smoother, firmer skin. Nourishes with the benefits of GHK Copper Peptide Complex®. Enables essential moisture to be absorbed by the skin with the addition of Sodium Hyaluronate. Japanese Green Tea, Grape Seed Extract, two forms of Vitamin E and Retinyl Palmitate create and intense free radical defense.