Hair Growth Serum Intense with Copper Peptide GHK Cu If your hair has been thinning, shedding, or just not growing like it used to meet GHK Cu (copper peptide) , This tiny peptide is one of the most underrated hair regrowth ingredients out there GHK Cu Copper Peptide Scalp Therapy Shed Copper Peptide Hair Growth Serum Take an Rx approach to hair health Does it work? Maneup GHK Cu hair growth serum : r tressless GHK Cu Peptide Before and After Results