GHK Cu Copper Peptide Shampoo Anti Hair Loss Promotes New Hair Growth eBay Cellular Glow Hair Serum 10% GHK Cu + 5% AHK Cu Peptides GHK Cu Hair Growth Serum Proven Copper Peptide, $299 Two Ingredients. Real Hair Transformations. How Neurogan Health's GHK Cu Serum Is Changing What Customers Expect From Hair Care The power of copper peptides for hair growth GHK Cu isn't just another trend, it's a science backed peptide that helps stimulate hair follicles, reduce inflammation, and improve scalp health for thicker,