This advanced peptide serum, powered by GHK Cu (Copper Tripeptide 1), is designed to visibly rejuvenate and refine your skin. Formulated with a bioactive brightening peptide complex, it helps improve 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 Tripeptide 1 GHK Cu 1% Solution Copper tripeptide (GHK Cu; Copper Glycyl histidine tripeptide) CAS 89030 95 5 AbMole BioScience Copper tripeptide Price GHK CU Copper Tripeptide 1 CocoJojo