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 WO2019167070A1 Topical copper tripeptide composition and process of preparation. Google Patents GHK Cu Tripeptide 5 mg 60 Sublingual Tablets SuperSmart The GHK Cu pen works. But needles at home were never the answer. We took the same clinically backed copper peptide complex and put it into a serum you can use in 30 seconds, GHK Cu Hair & Scalp Serum 2400mg 4% Less Shedding Neurogan Neurogan Health