GHK Cu Copper Tripeptide 1 GHK Copper CAS:49557 75 7 Zehao Industry Co., Ltd. Not all copper peptide serums are formulated the same Before you buy one, make sure you're actually getting pure GHK Cu at the right concentration not just a diluted blend. We spent GHK Cu Matrixyl 3000 CICA 16oz 1 Gallon Private Label Derma ProLab 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