GHK Cu Peptides: Unlocking the Copper Peptide Revolution in Skin Care Rejuvenation and Youth with GHK Cu Peptide Treatment Dr. Ahmet zyigit Frontiers Exploring the beneficial effects of GHK Cu on an experimental model of colitis and the underlying mechanisms 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