GHK Cu Peptide for Skin & Hair Facial Serum & Scalp Solution 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 Molecular structure of the tripeptide GHK Cu. In solution lysine Download Scientific Diagram GHK Cu Youthful Skin, Healthy Cells, Vibrant You. GHK CU Copper Peptide, Hair & Scalp Serum, 2 oz (60 ml)