Reactive oxygen generation by minimal copper binding peptide motifs bioRxiv Copper Peptides and Cell Interaction Research Studies GHK Cu 50mg 99% HPLC Tested Copper Peptide PDF) GHK Cu may Prevent Oxidative Stress in Skin by Regulating Copper and Modifying Expression of Numerous Antioxidant Genes How GHK Peptide Works Signaling GHK acts as a switch for skin repair: Interacts with adenosine receptors reduces inflammation Activates MAPK ERK, PI3K Akt, TGF pathways Stimulates fibroblasts & keratinocytes boosts collagen, elastin