GHK Cu Copper Peptide HPLC Tested Peptide Warehouse 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 Dosage and Protocol: A Medical Provider's Guide to the 30 Day Cycle Perfect B GHK Copper Peptide GHK Cu Tripeptide 1 GHK Cu Peptide: What It Does for Body Composition and Metabolic Health Rejuvenation and Youth with GHK Cu Peptide Treatment Dr. Ahmet zyigit