GHK Cu (Copper Peptide) has emerged as one of the most promising regenerative peptides for hair restoration due to its ability to stimulate follicular activity, improve scalp circulation, reduce inflammation, and prolong the Two Ingredients. Real Hair Transformations. How Neurogan Health's GHK Cu Serum Is Changing What Customers Expect From Hair Care Neurogan Health, GHK Cu Copper Peptide, Hair & Scalp Serum In an adult with pattern hair loss or diffuse thinning and no known copper allergy, what is the recommended firstline topical peptide (copperpeptide, GHKCu) regimen?