GHK Cu is one of those peptides that has incredible benefits and this Indonesian brand shocked me with a product that is both well formulated and well researched #ghk #copperpeptides #peptides 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 GHK CU Copper Tripeptide 1 CocoJojo GHK CU Copper Peptide, Face Cream, 2 oz (60 ml)