6. The Nourishing Hair Mask — The deadly combo of moisture-sucking indoor heat and super-drying winter temperatures means your dried-out strands need extra TLC around this time of year. A restorative hair mask, used twice a week, will help keep your tresses nourished and strong all winter long.

Christophe Robin Regenerating Mask With Prickly Pear Oil, $64, available at Woodley & Bunny; Neutrogena Triple Moisture Deep Recovery Mask, $5.49, available at Walgreens.