Organic Copper Peptide GHK CU Anti Aging Moisturizer Lightweight Hydrating Cream GHK Cu Copper Peptide Collagen, Skin Rejuvenation & Hair Restoration The Ordinary Multi Peptide + Copper Peptides 30ml Unichem Pharmacy 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