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. Copper Tripeptide (GHK Cu) for Advanced Skincare & Haircare Formulatio 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 Peptide Skin Hair Benefits Evidence Copper Peptide Hair Growth Serum for Hair Loss & Thinning Hair Feline Skinscience