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 Serum Method Tutorial TikTok GHK Cu Peptide Dosage How to Use Copper Peptides, Injections Neurogan Health GHK CU Program Calibrate Hydration GHK Cu Dosage and Protocol: A Medical Provider's Guide to the 30 Day Cycle Perfect B