What Is GHK Cu? The Copper Peptide That Rejuvenates Skin Meet GHK Cu, the peptide designed to help your skin repair itself. From supporting collagen to promoting hair growth, this "Copper Peptide" offers powerful benefits for your wellness routine. Check out the details Amazon.com: TOSOWOONG Copper Peptide Face Serum, Anti Aging with Copper Tripeptide, GHK Cu, 12 Multi Peptide Formula for Fine Lines, Firming, Skin Elasticity, Hydrating, Korean Skincare, 33ml 1.11 fl.oz. : Beauty & Personal Care Say hello to your skin's new BFF GHK Cu is a powerful peptide that supports collagen production, speeds healing, improves hair growth, and helps fight visible signs of aging. This tiny molecule Squalane + Copper Peptide (GHK Cu) Rapid Plumping Serum