Doutzen Kroes

From Kristen Stewart to Bella Hadid.

From Salma Hayek to Kristen Stewart.

You're going to want alllll the shades.

First, transition to a healthier blonde.

The eight-glasses-a day rule is a lie.

Six limited-edition shades of scarlety goodness.

You'll look effortlessly romantic.

Try these tones for better hair health.

Ring in the new year with one of these celeb-inspired looks.

You know those baby hairs around your forehead? Here's how to play them up—or (if you must) tame them into submission.