GHKCU is one of the most popular peptides out there and for good reason. Results are not instant, as it regenerates the skin form the inside out, and it also will awaken GHK Cu vs AHK Cu: Which Copper Peptide Is More Effective? GHK cu Copper Peptide Hair Regrowth Shampoo for Men & Women Boost Hair Growth Nourish & Revitalize Shop Internationally Buy Now with Express International Delivery GoSupps.com 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 Biotin Peptide for Hair Growth: The Science Behind Scalp Renewal I'm Fabulous Cosmetics