I have fake blonde hair—and you would never ever know it. Excuse the humble brag, but my hair is (normally) well-toned and incredibly shiny. But then summer rolls around. I’m in the pool.

"While a colorist can generally hide or mask brassy hair with a gloss, toner, or root gloss, color applied after lightening ...

"It neutralizes the brassy tones that occur when lightened hair oxidizes." In layman's terms, it keeps your lightened brown hair from turning that pesky orange-red hue. While blue shampoo is ...