Good news: You don't have to completely swear off blow-drying. Just do it right. "Your hair will be much better off if you start blow-drying when it isn't dripping wet," says Boston dermatologist Ranella Hirsch. Blot, don't rub, wet hair with a microfiber towel, which is less damaging than the classic terry-cloth turban. Use a heat-protective spray or serum. Our favorites: Tresemmé Thermal Creations Heat Tamer Spray and John Frieda Frizz-Ease Hair Serum Thermal Protection Formula.