Anyone who has ever colored their hair has likely heard about toner before. But what is hair toner, exactly? Not to be confused with the stuff you swipe on your face, hair toner is an essential part ...

At-home toners don’t alter the color of silver hair with bleach or hair dye, Smith says; instead, they refine it.

If you've spent any amount of time coloring your hair—especially if you've gone blonde—and you've noticed your hair losing its luster or becoming brassy or yellow over time, you probably need to use a ...