How to Use GHK Cu Peptide for Hair and Skin: Best Practices for Anti Aging & Hair Regrowth 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 GHK Cu LVLUP Health GHK Cu Supra Chems GHK Cu For Sale Online 99% Purity 3rd Party Tested Does it work? Maneup GHK Cu hair growth serum : r tressless