Scared of needles? What science says about peptide nasal sprays If you're into science that honors the Earth, this is the routine step I keep simple: Skin Perfection Copper Peptide as an easy add in to personalize your hydration base. My quick stack: Copper Peptide Hair Growth Shampoo GHK Cu for Hair Loss Hairgenetix GHK Cu Scalp Solution Empower Pharmacy 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 Morningstar