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 The human tri peptide GHK and tissue remodeling Copper Tripeptide 1 Skin Benefits: A Simple Guide Best Copper Peptide Serum The top 4 options of 2026 Dr. Loren Pickart Obituary Seattle Times Professor Dr Patrick Treacy has cautioned against the current hype surrounding peptides, emphasizing that aesthetic medicine must remain grounded in solid clinical evidence rather than marketing