Stop Injecting GHK Cu for Hair Loss (Doctor Explains Why) So excited about this peptide! GHK Cu serum and scalp solution available Fascinating peptide that helps to prevent and reduce fine lines and wrinkles. Applied topically on the scalp for hair growth. GHK Cu Copper Peptide for Hair Loss: Results, Mechanism, and What to Expect 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 for Hair Loss: Evidence, Safety, and UK Treatment Options Bolt Pharmacy