Neurogan Health, Copper Peptide GHK CU, 120 mcg, 60 Tablets iHerb GHK Cu and Its Roles in Skin and Hair Transformation GHK Cu: The Peptide That Transforms Skin and Tissue Health Calibrate Hydration 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