GHK Cu (Raw) 1g Ion Peptide GHK Cu Copper Peptide: Dosage, Before and After Results, and How It Works Perfect B Cosmetics Grade AHK CU and GHK CU Copper Peptide 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 mg, 50 mg, 100 mg) COA verified peptide Nootropix