Olaplex No. 4P Blonde Enhancer Toning Shampoo – Elevate your blonde with this powerhouse purple shampoo! It gently cleanses while depositing violet pigment to neutralize brassiness and enhance brightness. Powered by Olaplex’s Bond Building Technology™, it strengthens and repairs from within—leaving blonde, lightened, and gray hair soft, shiny, and beautifully toned.