Amazon.com : Copper Peptide Scalp Shampoo with GHK Cu Hair Density Enhancing Shampoo for Thinning Hair Nourishing Hair Care with Castor Oil & Panthenol, 3.38 Fl Oz 100ml : Beauty & Personal Care 6SKINS 6in1 Beauty Elixir with L Glutathione 510mg, NAC 102mg & Hyaluronic Acid 150mg Glutathione Supplement with 4x Absorption Immune & Liver Support, Powerful Antioxidant for Skin 60 Capsules Best Reddit asked questions. Here are answers. GHK Cu isn't newit's just not heavily marketed for hair (yet). Dr. Loren Pickart discovered it in the 70s. Decades of clinical research. Solid mechanism. We screwed Buy Skin Supplements for Hydration & Anti Aging Wellbeing Nutrition Before and after begins with consistency. Our 10% GHK Cu formula is engineered for deep absorption to support scalp health and visible density.