Topical GHK Cu: Skin Benefits, Best Forms, and Where to Buy Glowyour way. Meet GHK Cu, our glow enhancing copper peptidenow available in both a luxe topical cream and an injectable option, personalized to how you want to elevate your results. This is the GHK CU Topical Serum 30ml Azur Skin What is GHK Cu Cream? GHK Cu is a topical peptide cream featuring copper peptides that support your skin's natural repair process. Backed by science, this ingredient offers a range of skin enhancing benefits: Copper Peptide GHK Cu Face Cream with GHK Copper, Barley Seed and Matrix TRIO GHK Cu Peptide for Skin & Hair Facial Serum & Scalp Solution