GHK Cu Copper Peptide for Hair Loss: Results, Mechanism, and What to Expect 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 GHK CU 50 mg LIVV GHK Cu (Glycyl L Histidyl L Lysine Copper) is a naturally occurring peptide complex that binds copper, an essential trace mineral involved in tissue repair, collagen synthesis, and antioxidant