Copper peptides (GHK Cu) have been studied for decades for their role in tissue repair and that same biology applies to hair. Research shows GHK Cu may help strengthen existing hair follicles, reduce GHK CU COPPER PEPTIDE 5MG 10MG 50MG 100MG VIAL UMBRELLA Labs Peptide Therapy for Hair Growth: Explore Your Options 2% GHK CU Copper Peptide Serum for Hair Growth and Scalp Care Seraphime 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 GHK Cu Peptide: Hair Regrowth for Thinning & Alopecia