GHK Cu Topical Cream GHK Cu (Copper Peptide) Deep Dive: Mechanisms, Benefits, Risks, Forms, & Dosing GHK Cu is the compound your body made at 25 and quietly stopped making. Most people find it in overpriced serums. Few understand what it actually does, or what happens when you're not GHK Cu Copper Peptide: The Ultimate Peptide For Longevity Reducing Redness & Inflammation with GHK Cu Copper Peptides Vitali Skincare