Small molecules. Powerful results. Experience Peptide Power with Hairgenetix's advanced Copper Peptide Hair Growth Serum, formulated with 10% GHK Cu and 5% AHK Cu to support hair health at the follicle level. Helps 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 Does it work? Maneup GHK Cu hair growth serum : r tressless Anybody experiment with GHK Cu peptide yet? Its supposed to help regulate your collagen production. GHK Cu Focal Point Vitality