GHK Cu (Copper Peptide) LeadWest Medical Fitish Most people don't know GHK Cu by name. Their face does. It's the peptide your body uses to signal collagen production, repair tissue, Instagram A lot of people asked how I use GHK Cu (copper peptide) with a pen device, so here's a quick tutorial showing exactly how I do it. In this video I show how GHK Cu 10 Vials Set (50 mg each) Nootropix GHK Cu 99%+ Pure Peptide Amino Club Amino Club