GHK Cu is one of the most powerful regenerative peptides for skin, hair, and overall tissue health. GHK Cu supports collagen production, healing, and visible rejuvenation from within. It's commonly used to improve skin 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 Squalane + Copper Peptide (GHK Cu) Rapid Plumping Serum GHK Cu: The Peptide That Transforms Skin and Tissue Health Calibrate Hydration GHK Cu Copper Peptide 0.5% (topical foam) Shell Medical