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 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: Topical GHK Cu: Skin Benefits, Best Forms, and Where to Buy Copper Peptides GHK Cu Blue Tallow Balm 2oz Face & Body Moisturizer eBay GHK Cu Hair & Scalp Serum 2400mg 4% Less Shedding Neurogan Neurogan Health