Dimeric copper peptide incorporated hydrogel for promoting diabetic wound healing Nature Communications Let's talk about GHKU CU GHK Cu: The Regenerative Glow Peptide GHK Cu (Copper Peptide) is a naturally occurring peptide in your body that plays a powerful role in cellular repair, skin PDF) GHK Cu may Prevent Oxidative Stress in Skin by Regulating Copper and Modifying Expression of Numerous Antioxidant Genes GHK Cu: The Copper Peptide That's Rewriting the Rules of Regeneration