Insight Blonde Brightening Shampoo and Insight Incolor Anti-Yellow Shampoo on a neutral bathroom vanity, professional purple shampoos designed to neutralise brassy and yellow tones in blonde, highlighted and grey hair.

How to Get Rid of Brassy Hair (Purple Shampoo, Explained)

Why blonde and lightened hair turns brassy, and how to neutralise it with vegan purple and blue toning shampoo.
— Charlotte Read