Two Ingredients. Real Hair Transformations. How Neurogan Health's GHK Cu Serum Is Changing What Customers Expect From Hair Care Two Ingredients. Real Hair Transformations. How Neurogan Health's GHK Cu Serum Is Changing What Customers Expect From Hair Care Morningstar GHK Cu is a copper peptide that supports hair growth by stimulating hair follicles, increasing blood flow to the scalp, and extending the hair growth (anagen) phase. It also helps reduce inflammation and Hyperpigmentation no more? GHK Cu Users Share Their Stories Aseir Custom Peptide Journey Update: GHK cu for Hair Growth