Olaplex No. 4P Blonde Enhancer Toning Shampoo 8.5oz / 250mL

•WHAT IT IS: Highly concentrated purple shampoo cleanses, tones, and repairs while keeping hair hydrated from roots to ends.

•WHAT IT DOES: 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

•HOW TO USE: Apply to wet hair, lather fully, and let process.

•WHEN TO USE: 2-3 times per week or as often as needed to neutralize unwanted brassiness. All blonde, lightened, and grey hair.