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 GHK Cu Blue Copper Peptide Ampoule Skin Booster Serum Kit Repair Polypeptide Hyaluronic acid Firming Skin Moisturizing Skin Care AliExpress 66 GHK Cu Peptide for Skin & Hair Facial Serum & Scalp Solution 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 Amazon.com: GHK Cu Copper Peptides Facial Serum with SNAP 8 for Fine Lines, Wrinkles, Firming, Deep Hydration & CollagenAll Skin Types(1 fl.oz 30ml) : Beauty & Personal Care