GHK Cu Peptide Benefits for Hair Growth Explained Hair Growth Serum Intense with Copper Peptide GHK Cu If your hair has been thinning, shedding, or just not growing like it used to meet GHK Cu (copper peptide) , This tiny peptide is one of the most underrated hair regrowth ingredients out there GHK Copper (GHKCu) is a naturally occurring tripeptide that acts as a potent signaling molecule for hair regeneration., How it works: GHK Cu enhances hair follicle health by promoting angiogenesis and GHK Cu Peptide Progress: Week 3 Results GHK Cu Copper Peptide for Hair Loss: Results, Mechanism, and What to Expect