Copper Peptide GHK CU Serum, Raw Aloe , 4% Hyaluronic Acid Anti Wrinkle 1 fl oz eBay GHK cu is a copper peptide. It's great for skin, especially when you combine it with other things. My favorite is DMSO and derma rolling. My first experience with copper peptides was Procytes If you're playing with raw GHK Cu, here's the secret that makes it actually work on your skin: mix it with hyaluronic acid. Not microneedling, not fancy devices just a clean The Blue Revolution: Why 1% Pure GHK Cu is the New Standard for Mature Pure & Cimple