GHK Cu may Prevent Oxidative Stress in Skin by Regulating Copper and Modifying Expression of Numerous Antioxidant Genes GHK Cu Copper Peptide: Dosage, Before and After Results, and How It Works Perfect B Introduction GHK Cu is a copper peptide complex formed from the tripeptide glycyl L histidyl L lysine bound to copper. This compound has garnered significant attention in both laboratory and formulation research due to its critical role Frontiers Exploring the beneficial effects of GHK Cu on an experimental model of colitis and the underlying mechanisms