GHK Cu vs AHK Cu: Which Copper Peptide Is More Effective? GHK Cu Copper Peptide for Hair Loss: Results, Mechanism, and What to Expect Reddit asked questions. Here are answers. GHK Cu isn't newit's just not heavily marketed for hair (yet). Dr. Loren Pickart discovered it in the 70s. Decades of clinical research. Solid mechanism. We screwed Copper Peptide Shampoo GHK Cu + Biotin Hair Light Fusion EMR TEK OBM Geriatrics The Effect of the Human Plasma Molecule GHK Cu on Stem Cell Actions and Expression of Relevant Genes