GHK Cu Copper Peptide: Dosage, Before and After Results, and How It Works Perfect B GHK Cu is a copper peptide used in regenerative medicine to support collagen production, tissue repair, and cellular renewal throughout the body. It's for individuals looking to improve skin firmness, brightness, and visible GHK Cu prevented the activation of NF B and i NOS induced by cigarette Download Scientific Diagram What Is GHK Cu? The Copper Peptide That Rejuvenates Skin