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 Peptides Serum for Face 2% GHK CU & 4% EGF Seraphime Before vs. after 3 months of GHK Cu peptide therapy smoother texture, more even tone, and skin that looks healthier overall. Small peptide, big difference ReMed HydraPen (GHK Cu) Blue Copper Peptide Serum (2x5 ml) FillerDepot