If you're not already using a leave-in conditioner, there's one convincing reason you should be. "It's much easier to keep your hair in good condition than to repair it once the damage is already done," says hairstylist Rob Talty, who works with Jaime King and Amber Heard. And that's exactly what leave-in conditioner does. By regularly dosing strands with extra moisture, they don't have a chance to dry out, snap, and fray. "But you have to use the right formula," he says. "Otherwise you're just weighing the hair down."
By Hannah Morrill