Does your hair tend to get flat when the weather turns cool and dry? You might try Living Proof Full Shampoo and Conditioner ($24 each; LivingProof.com
). The daily-use, sulfate-free shampoo contains two lightweight cleansers (SLMI and decyl glucoside) to strip hair of oil and dirt without weighing it down. Plus, both the shampoo and conditioner use the brand's signature molecule (PolyfluoroEster) to detangle and smooth. We loved the way the products gave us full-bodied summer hair without the frizz.