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 Your skin is the largest organ in your body and anti aging is the name of the game! But, GHK cu is treating so much more than just wrinkles, this is for cellular health, Does it work? Maneup GHK Cu hair growth serum : r tressless Amazon.com : Bloom Clinically Proven Copper GHK CU Peptide Hair Serum for Hair Growth Non Greasy & Lightweight Advanced Multi Copper Peptides for Thinning Hair Made in USA 3 Pack for 3