GHK Cu Peptide Therapy: The Definitive Clinical Guide to Gene Modulation, Protocols, and Efficacy 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 Hydra Needle Microneedling with GHK Cu & SNAP 8 Peptide Skin Tightening Guide Miami, Beverly Hills, NYC GHK Cu Dosage and Protocol: A Medical Provider's Guide to the 30 Day Cycle Perfect B GHK Cu Peptide: What It Does for Body Composition and Metabolic Health