Peptides are the hottest word in wellness right now, so naturally I had to dive in!, The peptide stack I am trialing is GHK CU (hair, skin & nails) and Glutathione (neutralizes free radicals, reduces GHK Copper Peptides for Skin and Hair Defy Medical Support hair growth at the follicle level. GHK Cu is a copper peptide naturally produced by the body that plays a role in tissue repair, healing, and hair follicle activity. As levels decline What Does GHK Cu Do for Men? Peptides Lab UK GHK Cu Peptide Therapy Brea, CA Orange County GHK Cu Peptide: What It Does for Body Composition and Metabolic Health