NEW GHK Cu , Now Available at Carrington Medical, Healthier Skin. Thicker Hair. Real Science. , Were excited to offer GHK Cu (copper peptide) in our treatments the latest in regenerative GHK Cu Peptide Benefits for Skin and Hair LIVV Natural What Are GHK Cu Peptides for Skin and Hair Health? 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