Copper Peptides Serum for Face 2% Copper Peptide with 4% Epidermal Growth Factor (EGF Serum) Niacinamide Ceramides Squalane & Hyaluronic Acid Multi GHK CU Copper Peptide, Face Serum, 1 oz (30 ml) GHK Cu Topical Serum Eden and Eve Skin Care 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 Topical GHK cu with Hyaluronic acid : r DIYaesthetics GHK Cu Serum PLU Labs