GHK Copper Peptides for Skin and Hair Defy Medical 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 Felicite Did you know GHK Cu is one of the most studied peptides for skin health and tissue repair? This copper peptide has been explored for its potential to: Boost GHK Cu: The Peptide That Supports Healthy Aging GHK Cu (copper peptide) is naturally occurring in the body and plays a role in supporting skin health, collagen production, and tissue repair. As