GHK Cu (Copper) For Sale (50mg) Core Peptides Copper Peptide (GHK Cu): Clinical Uses, Stability & Compounding Tips GHK Cu is one of the most talked about peptides in aesthetics right now. But how much of what you have heard about it is actually true? Copper peptide, known as GHK Cu, has GHK Cu Peptide: Hair Regrowth for Thinning & Alopecia GHK Cu, commonly known as copper peptides, are found naturally within the human body where they play a vital role in skin repair and maintenance. Copper peptides support optimal skin function by helping