Neurogan Copper Peptide Hair Scalp Serum for Fuller Softer Shinier Hair Walmart.com Two Ingredients. Real Hair Transformations. How Neurogan Health's GHK Cu Serum Is Changing What Customers Expect From Hair Care GHK CU COPPER PEPTIDES TABLETS The Beauty Doctrine Review: Neurogan ghk cu copper peptide face cream What's in my jar Amazon.com: Neurogan GHK Cu Copper Peptide Hair & Scalp Serum 2400mg, 4% Copper Peptides Fast Absorbing, Water Based Formula for Hair Softness & Shine Cosmetic Dry Scalp Moisturizer Spray, Made in USA : Neurogan Health, GHK Cu Copper Peptide, Hair & Scalp Serum