Introducing GHK Cu Serum: Unlock the Secret to Youthful Skin! We are excited to announce the launch of our latest innovation from 8 Research Labs: the GHK Cu Serum! This cutting edge formula 7% GHK Cu Accelerant 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 GHK Cu Copper Peptide Serum 1% Black Tie Health 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