Proposed acidic degradation pathway of GHKCu in acidic solution. Download Scientific Diagram Intermediate Cu(II) Thiolate Species in the Reduction of Cu(II)GHK by Glutathione: A Handy Chelate for Biological Cu(II) Reduction Inorganic Chemistry Perhaps the most commonly asked about question when it comes to GHK Cu is THE BURN. Let's learn! @summitrejuvenation The research on GHK Cu goes back over 40 years a scientist dedicated his entire career to it. Your body already makes it. You just make about 60% less of it by