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 Amazon.com: Skin Perfection Copper Peptide Serum GHK CU 1% for Face & Hair Copper Peptides for Skin, Hair, & Scalp 1% Blue Liquid for Face, Neck, Body, Scalp Multi Use Serum Booster with Pairing Science with Beauty GHK CU Topical Serum 30ml Azur Skin