Copper Peptide + PDRN 1.25% for Anti Aging, Wrinkle & Fine Lines Face Serum with Bis (Tripeptide 1) Copper Acetate & PDRN Sodium DNA, Key to preventive aging in your 20's Minimalist 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: The Peptide That Transforms Skin and Tissue Health Calibrate Hydration GHK Cu Peptide Therapy Collagen & Skin Renewal