What is GHK Cu and Why is Everyone Talking About It? GHK Cu (Copper Peptide) is a powerful, naturally occurring compound in the body that plays a key role in skin health GHK Cu Peptide Foundry Premium Research Peptides Does GHK Cu Really Work? 40 Years of Research Reviewed What is GHK Cu and how does it work on the skin? Doaa Mansour posted on the topic LinkedIn 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