Key Benefits Neutralizes brassiness for brighter hair Strengthens hair and repairs damage Hydrates and softens hair This ultra-concentrated purple shampoo reduces breakage and hydrates as it cleanses and tones from roots to ends. Use N°.4P to neutralize brassy hair and yellow tones for brighter, softer, stronger blond hair, gray hair, or highlighted hair. Effective on natural and color-treated hair. How To Use Distribute evenly between palms first. Apply to wet hair. Lather fully. Leave on for 1-3 minutes. Rinse well. For more intense toning, leave on hair up to 5 minutes. Follow with N°.5P Blonde Enhancer™ Toning Conditioner for maximum toning results. Use weekly or as-needed.