Olaplex's first foray into colour, Nº.4P Blonde Enhancer Toning Shampoo helps to repair, cleanse and tone with patented OLAPLEX technology for all blondes, lightened, and grey hair.

The new Olaplex No. 4P Blonde Enhancer Toning Shampoo works to brighten and neutralise any brassy tones, whether you have blonde, dyed or grey coloured locks.

The new Olaplex No.4P Blonde Enhancer Toning Shampoo is scientifically proven to make hair three times brighter versus other purple shampoos. And it's now available to buy for £26 at Lookfantastic.

You can shop Olaplex’s No 4P Blonde Enhancer Toning Shampoo now for $54. Recently bleached your hair blonde, new to purple shampoo or just curious about Olaplex?

Olaplex’s entire haircare range is on sale in the Amazon Spring Deal Days Go from fried to flawless with discounted Olaplex this spring The Standard's journalism is supported by our readers.

Olaplex' No.4P Toning Shampoo, and the toning bundles, are on offer at Lookfantastic Credit: Lookfantastic If you click on a link in this story we may earn affiliate revenue.

Olaplex just launched the No 4P Blonde Enhancer Toning Shampoo. Here's how it can transform blonde and grey hair.