GHK Cu The Doctors Protocol in current Clinical Use , DISCLAIMER, The information shared in this video is for educational and informational purposes only and is based on research, and general GHK Cu Peptide: Turn Back the Clock Naturally Calibrate Hydration GHK Cu before and after : r Biohackers 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 Peptides: Unlocking the Copper Peptide Revolution in Skin Care