GHK Cu before and after : r Biohackers People are searching for the GHK Cu pen. Ordering it online. Trying to figure out how to use it safely at home. We looked at all of that and thought: there has to Peptide Sciences GHK Cu 50mg Copper Egypt Vitamins Radiance Restore (Epithalon + GHK Cu) Pure Hydration IV Spa in Jacksonville Medically Guided Skin Treatment Rumen Australia 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