GHK Cu Peptide: Hair Regrowth for Thinning & Alopecia Felicite Did you know GHK Cu is one of the most studied peptides for skin health and tissue repair? This copper peptide has been explored for its potential to: Boost GHK Copper Peptide GHK Cu Tripeptide 1 GHK Cu is one of the most talked about peptides in aesthetics right now. But how much of what you have heard about it is actually true? Copper peptide, known as GHK Cu, has