GHK Cu Copper Peptide for Hair Loss: Results, Mechanism, and What to Expect Wellness peptide craze: why people are injecting drugs 'not for human consumption' What is GHK Cu and Why is Everyone Talking About It? GHK Cu (Copper Peptide) is a powerful, naturally occurring compound in the body that plays a key role in skin health Innovation meets biology GHK Cu is a naturally occurring copper peptide studied for its role in skin health, collagen support, and tissue repairmaking it a powerful tool in next generation peptide science. Precision. OBM Geriatrics The Effect of the Human Plasma Molecule GHK Cu on Stem Cell Actions and Expression of Relevant Genes