GHK Cu: The Regenerative Peptide for Skin, Hair, and Healing Pulse & Remedy 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 7% GHK CU ACCELERANT Platinum Skin Care Defy GHK Cu (glycyl L histidyl L lysine) is a naturally occurring copper binding peptide found in human plasma. As levels decline with age, so may its support of the biological processes involved in collagen production, skin Proposed acidic degradation pathway of GHKCu in acidic solution. Download Scientific Diagram