Ahk Cu + Ghk Cu Hair Serum Pro PrettyStick My Go To Copper Peptide Serum: GHK Cu Benefits & Real Results! Should Bodybuilders Take GHK Cu? Neurogan Health Can You Use GHK Cu Peptides with Vitamin C Serum? Expert Guide GHK CU aka the beauty peptide. I've got the reconstitute and dose chart at the end for reference. Where I purchase mine from Elite Peptides Australia Discount code WISHY10 (because who doesn't love GHK Cu Peptide: Hair Regrowth for Thinning & Alopecia