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 Peptide Sciences GHK Cu 50mg Copper Egypt Vitamins Peptides RX Program GHK Cu (10 mg, 50 mg, 100 mg) COA verified peptide Nootropix LVLUP Health GHK Cu Oral Copper Peptide Capsules Holistic Lifestyler Bunbury Chiropractic Services & Supplement Store GHK Cu Peptide: What It Does for Body Composition and Metabolic Health