This is a product I purchased on Amazon, so I want to give it a quick review. *~Dumie GHK CU Facial Serum~* This is a Copper Peptide serum that is working amazingly for GHK Cu Topical Sky Blue Cream & Royal Blue Serum Bundle Aseir Custom Ghk cu Peptide Face Serum NEW Cobalt Blue Bottle 2 Oz Etsy Cellular Glow Copper Peptide GHK Cu Serum for Face 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