Longevity: Functional Medicine for Optimal Health and Wellness NAD+ GHK_Cu Peptide Patch Medical Imaging and Therapeutics Longevity: Functional Medicine for Optimal Health and Wellness Revolutionizing cartilage repair: The role of macrophages and hyaluronic acid in healing injuries NYU Tandon School of Engineering 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 Copper peptides like GHK Cu work by sending signals to your skin to repair, regenerate, and produce collagen. It's not about instant results, it's about improving how your skin functions over time. Dr.