Most people think GHK Cu is just a beauty peptide. But look at this Same person. Same lighting. Real skin change. GHK Cu works by activating repair genes in the body helping with Unlocking the Secrets of GHK Cu: The Revolutionary Peptide for Youthfu Amazon.com: GHK Cu Copper Peptide Serum Anti Aging Face Serum for Skin Firming, Wrinkle Reduction, Hydration & Collagen Boosting, 30ml(1 fl oz) : Beauty & Personal Care Topical application of Copper Peptide GHK Cu has been shown to positively impact numerous factors of skin health at once. Whether you are using GHK Cu for maintaining already healthy skin or Jay Campbell