Olaplex no4P

ABOUT Nº.4P
Unbreakable Blondes
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. 
Scientifically Proven: 
3x Brighter* 
*Compared to top purple shampoos