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 What are the considerations and potential benefits of using GHK Cu (Glycyl Histidyl Lysine Copper) in a generally healthy adult female for skin health and hair growth? GHK Cu Copper Peptide Regeneration, Skin Renewal & Anti Age Molecular structure of the tripeptide GHK Cu. In solution lysine Download Scientific Diagram