Science Behind Copper Peptides & Hair Loss: Why GHK Cu Is a Game Changer HapiPatch 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 Welltech Collagen Copper Peptide GHK GHKCu Copper Peptides: Clinically Proven Collagen & Skin Regeneration Power Scrub a lil Deepa Koreana Skin GHK Cu Copper Peptide Mask Revitalizing & Firming Hydrogel Sheet Mask GHK Cu Peptide for Hair Growth: Science, Benefits, and How It Works