OLAPLEX No. 4P Blonde Enhancer

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. Natural or stylist-created, root-to-tip or balayage, every client can benefit using this as part of their Blonde Maintenance Routine for the best blonde yet.