Meet the ingredient your skin has been waiting for. GHK Cu, or Copper Tripeptide 1, is one of the most researched anti ageing actives in skincare. It firms. It renews. It supports collagen. And now Facial Serum w Copper Peptide (GHK Cu), 1 fl oz (topical), Quicksilver Scientific 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 Copper Peptide GHK Cu Tripeptide 1 Reducing Redness & Inflammation with GHK Cu Copper Peptides Vitali Skincare GHK Cu Copper Peptide Neck & Face Serum