Shop this handy Olaplex Duo together for your Best Blonde Ever. Includes:

Olaplex No.4P Blonde Enhancer Toning Shampoo 250ml
Olaplex No 4P is a highly concentrated purple shampoo that cleanses, tones, and repairs while keeping hair hydrated from roots to ends. The sulfate-free formula creates a rich lather to neutralize brassiness and boost brightness after one use for all blonde, lightened, and grey hair.

Olaplex Nº.5P Blonde Enhancer™ Toning Conditioner 250ml
This nourishing conditioner delivers even, all-over toning, brightness, and smoothing hydration from root to tip to detangle and soften fragile blondes without weighing hair down at the roots as some conditioners can. The only purple conditioner with patented OLAPLEX Bond Building Technology™ to strengthen hair bonds for strong, healthy-looking blondes and greys. Nº.5P is clinically proven to smooth, strengthen, and reduce brassiness after just one use.