GHK Cu Peptide Injections: The Future Of Skin And Hair Care GHK Cu Dosage and Protocol: A Medical Provider's Guide to the 30 Day Cycle Perfect B USA Copper Peptide GHK Cu Powder, DIY Blue Copper for Making the Best Face Cream 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 Injectable GHK Cu: Beginner's Guide to Copper Peptide