"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." If you've spent any amount of time coloring your hair—especially if you've gone blonde—and you've noticed ...

What is a hair toner? Hair toners can be used to achieve two things. “It can be used to add pigment to hair color that has faded over time, and it can be used to counteract unwanted colors like yellow ...

To refresh and extend the vibrancy of your colour, as well as its shine, between appointments, a hair toner can become quite the game-changer in your routine - and not just in the case of blonde hair.

If you have color-treated hair (hi, yes, me), you know that you only have a handful of weeks before your color—blonde or brunette—starts to pick up some unwanted brassy or warm tones. It’s normal.