GHK Cu Copper Peptide Face Tonic (30 mL) Reduces Appearance of Fine Lines Supports Skin Firmness 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 WO2019167070A1 Topical copper tripeptide composition and process of preparation. Google Patents Peptide Therapy in Cherry Hill, NJ AnatomicL Med Spa BPC 157 GHK Cu