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 Ingredients Hairgenetix GHK Cu, AHK Cu & PDRN Peptides AHK CU + GHK Cu Hair Serum Pro 4800mg Hair Growth Neurogan Alopecia Treatment Copper Peptide Conditioner Ghk Cu Conditioner 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. Hair Growth Serum Intense with Copper Peptide GHK Cu