Quantitation of Copper Tripeptide in Cosmetics via Fabric Phase Sorptive Extraction Combined with Zwitterionic Hydrophilic Interaction Liquid Chromatography and UV Vis Detection Your body made this peptide every day until you turned 30. Then it stopped. GHK Cu (copper peptide) is a naturally occurring tripeptide discovered in 1973. At age 20, your plasma levels sit GHK Cu: The Regenerative Peptide for Skin, Hair, and Healing Pulse & Remedy Bioactive peptides in cosmetic formulations: Review of current in vitro and ex vivo evidence ScienceDirect Molecular crystal structure of the tripeptide GHK Cu. In solution, Download Scientific Diagram GHK Cu Copper Peptide Therapy for Skin & Hair in Southlake, TX