"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 ...

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.

Add Yahoo as a preferred source to see more of our stories on Google. You can have toner tailored to your specific hair color applied by a professional colorist in the salon, but if you don't have the ...