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.

Where: Apply to wet hair, lather fully, and let process.

When: 2-3 times per week or as often as needed to neutralize unwanted brassiness.

For: All blonde, lightened, and grey hair.