GHK Cu before and after : r Biohackers Neurogan Health, GHK Cu Copper Peptide, Hair & Scalp Serum Hair Growth Serum Intense with Copper Peptide GHK Cu 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 Copper Peptide Hair Growth Treatment GHK cu, AHK cu, Licorice Root Extract, Ginseng Root Extact Copper peptides (GHK Cu) have been studied for decades for their role in tissue repair and that same biology applies to hair. Research shows GHK Cu may help strengthen existing hair follicles, reduce