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 PEPTIDES FOR HAIR GROWTH Ultrastrong 10% GHK Cu Formula with Sonora Supply Co. GHK Cu vs AHK Cu: Which Copper Peptide Is More Effective? Ghk Cu Shampoo Copper Peptide Hair Growth Best Peptide for Hair Growth Copper Peptide Shampoo Copper Peptide Hair Growth Shampoo GHK Cu for Hair Loss Hairgenetix