As anyone who's ever dyed or highlighted their hair blonde knows, the maintenance is real. Coloring your hair might require a few hours, a couple of hundred bucks, and the occasional burning scalp, ...

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 ...

We may earn commission from links on this page, but we only recommend products we love. Promise. “Hair toner is any semi- or demi-permanent hair color that helps enhance the tone of your hair,” says ...