GHK Cu may Prevent Oxidative Stress in Skin by Regulating Copper and Modifying Expression of Numerous Antioxidant Genes Most people think skincare works at the surface level. But healthy skin function starts much deeper than a temporary glow. GHK Cu is a naturally occurring copper binding tripeptide that is already found GHK CU Cosmetic for Healthy Skin Aging and Wrinkle Support Fullscript KPV NAD+ GHK Cu Peptide Patch Medical Imaging and Therapeutics