What is GHK Cu? GHK Cu is a naturally occurring copper peptide composed of three amino acids bound to copper. It functions as a signaling molecule in the skin, helping to support repair processes, Liposomal GHK Cu by Quicksilver Scientific Advanced GHK Cu Face Cream 2400mg 4% Firmer Skin Neurogan Neurogan Health GHK CU Copper Peptide, Face Serum, 1 oz (30 ml) New product alert! Introducing GHK CU Peptide face cream! Compounded specifically to aid in DNA repair, increases collagen and elastin production, accelerate wound healing, reduce wrinkles and signs of aging. Glow from within