GHK Cu Youthful Skin, Healthy Cells, Vibrant You. 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 Cosmetic for Healthy Skin Aging and Wrinkle Support Fullscript Everything you need to know about GHK Cu WHAT IS IT? A copper peptide your body naturally produces but production drops by 60% by age 60. It's one of the most Cellular Glow Copper Peptide GHK Cu Serum for Face