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 Amazon.com : Bloom Clinically Proven Copper GHK CU Peptide Hair Serum for Hair Growth Multi Copper Peptides Non Greasy & Lightweight for Thinning Hair Promotes Fullness, Reduces Shedding Made in USA : GHK Cu Peptide Before and After Results Ghk cu Peptide Face Serum NEW Cobalt Blue Bottle 2 Oz Etsy 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 Copper Peptide Hair Growth Treatment GHK cu, AHK cu, Licorice Root Extract, Ginseng Root Extact