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 Nanopep Epitalon Peptide Bioregulator Supplement Oral Spray, Non Habit Forming, Promotes Healthy Sleep Cycles & Anti Aging, Regulates Metabolism, Melatonin Free Supplement Made in Portugal, 20ml : Amazon.ae: Health 89030 95 5 GHK Cu Gly His Lys Cu Copper Tripeptide 1; Prezatide copper Product Details: Epithalon PSA] Finally, a Dr. explains the mechanism behind the "copper uglies" : r SkincareAddiction