Beauty How to Get Sleek Summer Hair Like Ashley Greene By Jennifer Velez Jennifer Velez Jennifer Velez is a New Jersey-based writer, editor, and digital producer who has covered beauty, wellness, celebrity, and pop culture. She is currently the Senior Associate for Digital Production for Sony. InStyle's editorial guidelines Published on June 24, 2014 @ 05:54PM Pin Share Tweet Email Photo: Kevin Winter/Getty Images We all know how challenging it can be to maintain silky straight strands in the heat of summer—so when we spotted Ashley Greene’s weather-defying hairstyle at the premiere of Wish I Was Here, we just had to reach out to her hairstylist, Richard Collins, for the inside scoop. Relying on Leonor Greyl products for a super-sleek finish, Collins first massaged Mousse au Lotus Volumatrice ($46; leonorgreyl-usa.com) to the star’s wet hair and pulled it from the roots to the tips, using a "less is more" approach as he applied. "I really liked this mousse because it wasn’t heavy; it was really light but still smoothed the hair," he tells us. "Then, I blow-dried her hair and went back over it with a flat iron to make it sleeker and tighter." Collins moved on to Éclat Naturel ($46; leonorgreyl-usa.com), a protective styling cream, and smoothed it on top of her hair and along the bang area for a bit of shine. He turned to the ultimate frizz-fighting weapon for his next step: a toothbrush doused with hairspray, which he used to tame flyaways along her hairline and around the ear. "Lastly, to finish the look, I took some Éclat Naturel on my fingers and ran it through the hair around her face, concentrating on the ends and piecing it through a little bit, but made sure it wasn’t too saturated," he adds. "This kept the look shiny, instead of greasy." Check out more summer hairstyles we love in our gallery!