GHK Cu Copper Peptide: Dosage, Before and After Results, and How It Works Perfect B 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 and Hair Follicle Growth Biotech Peptides Has anyone tried aGHK CU serum for hair? It's a copper peptide based serum for hair. : r FemaleHairLoss