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 Where and How to Inject hCG: Step by Step Instructions GHK Cu Peptide: What It Does for Body Composition and Metabolic Health Skin Restoration: Prioritizing Safety Over Trends GHK Cu Dosage and Protocol: A Medical Provider's Guide to the 30 Day Cycle Perfect B