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 Copper Peptide GHK Cu Tripeptide 1 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 Baldness Secret: GHK Cu Consult your nearest dermatologist for this treatment Hair loss is not just about DHT sometimes the follicle simply loses its repair signals. One powerful molecule is GHKCu (GlycylLHistidylLLysine