Neurogan Health, GHK Cu Copper Peptide, Hair & Scalp Serum Neurogan Health, GHK Cu Copper Peptide, Hair & Scalp Serum 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 2% GHK CU Copper Peptide Serum for Hair Growth and Scalp Care Has anyone tried peptides GHK Cu (copper) in particular? : r FemaleHairLoss