Best Copper Peptide Serum The top 4 options of 2026 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 Neurogan Health, Copper Peptide GHK CU, 120 mcg, 60 Tablets iHerb Meet the peptide everyone in aesthetics is talking about GHK Cu is known to support collagen production, reduce fine lines, and improve overall skin quality at the source. This isn't just hydrationit's Say hello to your skin's new BFF GHK Cu is a powerful peptide that supports collagen production, speeds healing, improves hair growth, and helps fight visible signs of aging. This tiny molecule