The appeal of glutathione injections makes sense. Glutathione is one of the most important antioxidants your body produces, and levels drop as you age, making the idea of a quick boost tempting. Zinc Thymulin GHK Cu Topical Hair Growth Product Infiniwell 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 GHK Cu Copper Peptide for Hair Loss: Results, Mechanism, and What to Expect