GHK CU Cream GHK Cu Skin Glow 30mg Peptide Pen Dn Research 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 GHK Cu Copper Peptide: Dosage, Before and After Results, and How It Works Perfect B GHK Cu is one of the most talked about peptides in aesthetics right now. But how much of what you have heard about it is actually true? Copper peptide, known as GHK Cu, has GHK Cu vs NAD+: Which Longevity Peptide Should You Take or Stack?