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 Copper Peptide: Dosage, Before and After Results, and How It Works Perfect B GHK Cu Dosage and Protocol: A Medical Provider's Guide to the 30 Day Cycle Perfect B Frontiers Exploring the beneficial effects of GHK Cu on an experimental model of colitis and the underlying mechanisms The science behind the peptide craze Scientific American GHK Cu Copper Peptide: Dosage, Before and After Results, and How It Works Perfect B