Copper Peptide 10% GHK CU, 5% AHK CU with Oligopeptide 1 Hair Treatment Serum You're doing all the right things but your body still feels like it's running on empty. The Glow + Burn peptide combo is your inside out reset fat loss, healing, glow, and 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 Copper Peptide GHK Cu Tripeptide 1