Molecular crystal structure of the tripeptide GHK Cu. In solution, Download Scientific Diagram Copper Peptide Duo GHK Cu Anti Aging Serum & Moisturizer Say hello to your skin's new BFF GHK Cu is a powerful peptide that supports collagen production, speeds healing, improves hair growth, and helps fight visible signs of aging. This tiny molecule By age 30, your skin produces about 25% less collagen. By 40, that number can reach 40%. This decline affects more than just how your skin looks. It changes how it heals, Does GHK Cu Really Work? 40 Years of Research Reviewed OBM Geriatrics The Effect of the Human Plasma Molecule GHK Cu on Stem Cell Actions and Expression of Relevant Genes