GHK Cu Peptide Benefits for Skin and Hair LIVV Natural The glycyl l histidyl l lysine Cu2+ tripeptide complex attenuates lung inflammation and fibrosis in silicosis by targeting peroxiredoxin 6 ScienceDirect Copper Peptides Elmhurst IL Chicago Accelerated Aesthetics 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 Peptide Injections: Advanced Skin Rejuvenation