How do I use purple shampoo to tone my hair? As purple sits opposite yellow on the color spectrum, the two colors cancel each other out. Purple-pigmented shampoo, therefore, works by neutralizing ...

We spoke to a hair expert on the best purple shampoos for blonde and grey hair, with sulphate-free options to brighten and tone from Olaplex, Redken, Fanola and more.

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." The one thing no one warned me about when I lightened my hair from dark brown to strawberry blonde is ...