PDF) The Human Tripeptide GHK Cu in Prevention of Oxidative Stress and Degenerative Conditions of Aging: Implications for Cognitive Health Copper Peptide (GHK Cu): Clinical Uses, Stability & Compounding Tips The naturally occurring peptide GHK reverses age related fibrosis by modulating myofibroblast function He Aging Pathobiology and Therapeutics GHKCU Peptide Therapy Relive Health Houston, TX Copper, Collagen, and Controversy: Inside the GHK Cu Buzz 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