GHK Cu Peptide Therapy: The Definitive Clinical Guide to Gene Modulation, Protocols, and Efficacy GHK Cu Topical Spray Wells Pharmacy Network GHK Cu Peptide: Hair Regrowth for Thinning & Alopecia Peptide GHK CU Cream Concierge MD GHK Cu Copper Peptide 0.5% (topical foam) Shell Medical 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