GHK Cu Peptide Therapy: The Definitive Clinical Guide to Gene Modulation, Protocols, and Efficacy GHK Copper Peptide GHK Cu Tripeptide 1 Thinking about trying BPC 157? Read this first. While often marketed as a healing peptide BPC 157 is not FDA approved and not pharmacy grade meaning most versions sold online are unregulated, contaminated GHK Cu Peptide Therapy: The Definitive Clinical Guide to Gene Modulation, Protocols, and Efficacy 12 weeks in, and my skin has NEVER looked better! GHK peptides are doing their thing. Alright, I need to give you an updateit's been 12 weeks since I started using GHK GHK Cu Copper Peptide for Hair Loss: Results, Mechanism, and What to Expect