Transform your blonde hair with Olaplex No.4P Blonde Enhancer Toning Shampoo. This 250 ml bottle is specially formulated to neutralize brassiness and enhance the vibrancy of blonde, lightened, and gray hair. Enriched with Olaplex's signature bond-building technology, it strengthens and repairs hair while providing deep nourishment and hydration, leaving your hair shiny, soft, and beautifully toned.