Squalane + Copper Peptide (GHK Cu) Rapid Plumping Serum Jumbo Size Definitive Guide on Peptides for Skin and Hair Care Infusion Clinic ABQ 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 GHK Cu (Copper Tripeptide 1) activates your skin's natural healing pathways, boosting collagen, elastin, and glycosaminoglycans. Reduce wrinkles, fade discoloration, and enhance firmnessall with one bioactive peptide backed by clinical science