Olaplex No.4 Blonde Enhancer by Olaplex, 8.5 oz Toning Shampoo

OLAPLEX No.4P Blonde Enhancer Toning Shampoo cleanses, tones and repairs while keeping hair hydrated from roots to ends. This highly-concentrated, sulfate-free shampoo forms a rich lather to neutralize brassiness and boost brightness after one use.