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 Unlocking the Secrets of GHK Cu: The Revolutionary Peptide for Youthfu GHK Cu isn't just another skincare ingredient. It's one of the most studied copper peptides in regenerative medicine because of its role in: collagen signaling tissue repair hair & skin