GHK CU Cosmetic for Healthy Skin Aging and Wrinkle Support Fullscript GHK Cu is a powerful copper peptide that supports collagen production, skin and hair health, and tissue repair. It may help reduce fine lines, improve elasticity, and promote faster healing. Want to learn GHK Cu: My secret weapon for skin, hair, and healing, I use it two ways topical cream for my face, and subQ injections 3x a week., It boosts collagen, tightens skin, helps hair grow, and even GHK CU Before and After Pictures Topical GHK Cu Skin Results, Face Serum Reviews & Photo Results Neurogan Health GHK Cu Copper Peptide for Hair Loss: Results, Mechanism, and What to Expect