If you've recently lightened your hair or noticed unwanted brassiness creeping into your color, you've probably heard about toning shampoos. While purple shampoo is a well-known solution for blondes, blue toning shampoo is the unsung hero for brunettes and those with darker shades who want to keep their color cool and vibrant. In this article, we’ll dive into what blue toning shampoo is, how it works, who should use it, and how to get the best results from your toning routine.



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