Olaplex No.4P Blonde EnhancerUnbreakable BlondesHighly 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.Scientifically Proven:3x Brighter**Compared to top purple shampoos 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.
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