GHK CU Copper Peptide, Face Cream, 2 oz (60 ml) 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 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 a growing body of peer GHK CU Copper Peptide, Face Serum, 1 oz (30 ml) GHK Cu Face Serum 1200MG Lab Tested & High Potency Neurogan Health Neurogan Health, Copper Peptide GHK CU, 120 mcg, 60 Tablets iHerb