Revitalize Your Skin: The Benefits of Copper Peptide for Youthful Glow 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 Expression and Purification of Recombinant GHK Tripeptides Are Able to Protect against Acute Cardiotoxicity from Exposure to Waterborne Copper in Zebrafish GHK CU Peptide Guide Reconstitution, Dosing & Pinning Tips (Beginner Friendly!) #ghkcu #peptides YouTube