Almost 4 months on GHK Cu hair growth progress : r tressless Gloss Hair Growth Shampoo with GHK Cu Copper Peptides VANI T BPC 157 Benefits, Dosage & Before After Results Yes im a natty lifter, Ive never personally used peptides like Retatrutide or BPC 157. But I have coached people through body composition changes, injuries, and joint pain. Some of those clients had GHK Cu Peptide Therapy: The Definitive Clinical Guide to Gene Modulation, Protocols, and Efficacy