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 GHK Cu Copper Peptide Serum with Niacinamide, Hyaluronic Acid and Mushroom Extract 1% Copper Tripeptide 1 Anti Aging Formula, 1 oz Have you heard of GHK Cu? Its one of the things were most excited about in the clinic right now., Its a copper peptide that basically tells your skin and hair to get back to work. It helps with Squalane + Copper Peptide (GHK Cu) Rapid Plumping Serum Jumbo Size GHK Cu Youthful Skin, Healthy Cells, Vibrant You.