olaplex no°4P blonde enhancer toning shampoo

highly concentrated purple shampoo cleanses, tones, and repairs while keeping hair hydrated from roots to ends. sulfate-free formula creates a rich lather to neutralize brassiness and boost brightness after one use for all blonde, lightened, and grey hair. n°4P can be used 2-3x weekly (i recommend once a week for healthy maintenance) ⁣ tip: shampoo hair with your normal cleanser before n°4P to get any product/buildup off then go in with n°4P⁣ ⁣ let process for 1-3 minutes. for more intense toning leave for 5 minutes.