Plus a briefer on why hair goes brassy to begin with. Fact checked by Isaac Winter You drop a decent amount of cash on a dye job and notice, maybe even a few weeks later, that your hair is looking ...

Blue shampoos replace orange undertones with cooler brown shades. We tested the market leaders in our beauty lab to find the best for brunettes. Shop now.

From neutralising brassy tones in blonde hair to boosting ... Banish unwanted warm red tones from brunette and dark coloured hair with this cleansing blue shampoo. It gently neutralises red ...

Except when brassy tones creep in and ruin ... "If you leave a purple shampoo on for too long, your hair will have a blue-purple tinge to it," Irwin cautions. Never exceed the specific product ...

Purple Shampoo: An anti-brass purple shampoo that instantly neutralizes warm, brassy undertones in lightened, cool blonde, bleached, ashy, or gray hair and nourishes damaged, processed hair Color ...

The extra time was worth it—the shampoo worked so well to counteract the brassy tones of her hair that she felt more confident in the weeks leading up to her next color appointment. That said ...