Does it work? Maneup GHK Cu hair growth serum : r tressless Reddit asked questions. Here are answers. GHK Cu isn't newit's just not heavily marketed for hair (yet). Dr. Loren Pickart discovered it in the 70s. Decades of clinical research. Solid mechanism. We screwed Why GHK Cu Became the Most Talked About Peptide in Cosmetic Research Research Guide Tide Labs Tide Labs Ghk Cu Hair Growth Peer Reviewed Studies GHK Cu for hair growth does it actually work? Short answer: no. GHK Cu can be great for skin but when it comes to hair growth, the evidence just isn't there. And this