GHK CU Copper Peptide, Face Cream, 2 oz (60 ml) GHK Cu Peptides Serum TryDeloura GHK Copper Peptide GHK Cu Tripeptide 1 Compounded GHK Cu Topical Cream Restorative Compounding Pharmacy + Wellness Defy GHK Cu (glycyl L histidyl L lysine) is a naturally occurring copper binding peptide found in human plasma. As levels decline with age, so may its support of the biological processes involved in collagen production, skin