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 Theoretical study of copper binding to GHK peptide ScienceDirect Reactive oxygen generation by minimal copper binding peptide motifs bioRxiv Frontiers Exploring the beneficial effects of GHK Cu on an experimental model of colitis and the underlying mechanisms