GHK Cu Peptide for Hair Growth: Science, Benefits, and How It Works This is what the combination of microneedling, peptides and consistency can do These photos are results from scalp restoration using GHK CU from @neuroganhealth How does this treatment work? Microneedling is used Copper Peptide Hair Growth Conditioner GHK Cu for Hair Loss Hairgenetix Two Ingredients. Real Hair Transformations. How Neurogan Health's GHK Cu Serum Is Changing What Customers Expect From Hair Care Before and after begins with consistency. Our 10% GHK Cu formula is engineered for deep absorption to support scalp health and visible density.