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 Copper Peptide GHK CU Serum with Hyaluronic Acid and Raw Aloe Anti Wrinkle 1 fl oz Not all copper peptide serums are created equal And this is where a lot of people get confused. You'll see copper peptides on the label and expect amazing results but the If youre playing with raw GHK Cu, heres the secret that makes it actually work on your skin: mix it with hyaluronic acid. , Not microneedling, not fancy devices just a clean HA serum as the