The Effect of the Human Peptide GHK on Gene Expression Relevant to Nervous System Function and Cognitive Decline 07 MARGOLINA c_04 LORD_c 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 Molecular crystal structure of the tripeptide GHK Cu. In solution, Download Scientific Diagram The naturally occurring peptide GHK reverses age related fibrosis by modulating myofibroblast function He Aging Pathobiology and Therapeutics Copper Tripeptide (GHK Cu) for Advanced Skincare & Haircare Formulatio