89030 95 5 GHK Cu Gly His Lys Cu Copper Tripeptide 1; Prezatide copper Unlocking the Secrets of GHK Cu: The Revolutionary Peptide for Youthfu Copper Peptide (GHK Cu) Supplier Cosmetic Ingredient for Formulators Creative Peptides 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