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 Unlocking the Secrets of GHK Cu: The Revolutionary Peptide for Youthfu Uses and Benefits #ghk GHK Cu is a naturally occurring peptide in human plasma that declines with age. When used in injections (usually subcutaneous), it can offer various benefits: Skin Rejuvenation and Anti Aging: Frontiers Exploring the beneficial effects of GHK Cu on an experimental model of colitis and the underlying mechanisms