Unlocking the Secrets of GHK Cu: The Revolutionary Peptide for Youthfu A Dermatologist's Take on the Copper Peptide (GHK Cu) Trend GHK Cu Peptide: What It Does for Body Composition and Metabolic Health GHK Cu (Copper Peptide) is a naturally occurring peptide in the body that binds with copper to support cell repair and renewal. As we age, our levels decrease and thats where supplementation or Frontiers Exploring the beneficial effects of GHK Cu on an experimental model of colitis and the underlying mechanisms