GHK CU Copper Peptide SARMs Supplements 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 Should Bodybuilders Take GHK Cu? Neurogan Health GHK CU 50mg Olympic Peptide Let's face the facts: Tighten Plus is pretty tight! Designed with GHK Copper that may smooth out wrinkles, repair and tighten skin, and fight inflammation, this facial cream packs an age managing