Injectable GHK Cu: Beginner's Guide to Copper Peptide GHK Cu Copper Peptide Benefits, Uses & Safety Intra V How to Apply and Use GHK Cu and AHK Cu Hair Serum for Hair Regrowth Peptide Labz Ghk Cu Copper Peptides! We dont gatekeep! #ghkcu #ghkcucopperpeptide #antiaging #beyouthful Robbie Williams Facebook 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