5 peptides for skin health If you're serious about collagen, healing, and real skin regenerationthese are the peptides actually worth knowing GHK Cu (Copper peptide) The gold standard for collagen + GHK Cu: The Peptide That Supports Healthy Aging GHK Cu (copper peptide) is naturally occurring in the body and plays a role in supporting skin health, collagen production, and tissue repair. As Understanding the Difference Between Glow and GHKCU Peptides GHK Cu Copper Peptide Serum Clinical Anti Aging Skin Repair Beverly Hills Luxury Skincare 30ml 120 ml 4 oz