About The Product:
Olaplex No. 4 Blond Enhancer Toning Shampoo is a highly concentrated purple shampoo that cleanses, tones, and repairs while keeping hair hydrated from roots to ends. Sulphate-free formula creates a rich lather to neutralise brassiness and boost brightness after one use for all blonde, lightened, and grey hair.

To use:
Apply to wet hair, lather fully, and let process. 2-3 times per week or as often as needed to neutralise unwanted brassiness.