Male Hair Restoration Before & After with PRF and GHK Cu Hair Growth Serum Intense with Copper Peptide GHK Cu Mayraki Your skincare isn't working. But your hair is the real signal. If you're noticing thinning, shedding, or less density it's not random. And it's not just genetics. Meet GHK Cu (copper peptide): Two Ingredients. Real Hair Transformations. How Neurogan Health's GHK Cu Serum Is Changing What Customers Expect From Hair Care Morningstar