Frontiers Exploring the beneficial effects of GHK Cu on an experimental model of colitis and the underlying mechanisms GHK Cu Peptide Benefits for Skin and Hair LIVV Natural Did you know that GHK Cu peptide is the secret weapon to rebuilding collagen? GHK Cu peptide, also known as a copper peptide, is a naturally occurring compound found in our bodies. It GHK Cu Copper Peptide for Hair Loss: Results, Mechanism, and What to Expect