Rachel Bilson
Credit: Gregg DeGuire/FilmMagic; Courtesy Photo

When the weather gets sticky, update your beauty routine to keep your skin looking fresh year round. One thing we always do? Opt for a roll-on fragrance, as the heady fragrances you spritzed in the fall may be too intense for summer. Rachel Bilson is a fan of Bath Bar's Zen Milk Roll-On ($39;, an airy blend of musk and vanilla with fresh floral notes. Plus, its compact size makes it easy to toss into roomy beach bags and tiny clutches alike.

Plus, see more summer makeup tips!