Does it work? Maneup GHK Cu hair growth serum : r tressless The hype is real. Ghk Cu aka the copper beauty peptide If youre playing with raw GHK Cu, heres the secret that makes it actually work on your skin: mix it with hyaluronic acid. , Not microneedling, not fancy devices just a clean HA serum as the 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 Hair Growth Serum Intense with Copper Peptide GHK Cu