Beauty Extras That Are Totally Worth It

Deep Conditioner

A deep-conditioning treatment contains higher concentrations of moisturizers than regular conditioners and seals the shaft of each strand to leave your hair silky. Use one once a week (only on ends if you have fine hair).

Great Bets: Nexxus Humectress Hydrating Treatment ($15; drugstores); Kiehl's Olive Fruit Oil Deeply Reparative Hair ($26; Kiehls.com ).