The highly anticipated Warner Brothers remake of DC Comics’ Green Lantern premiered last week starring Hollywood’s leading lady, Blake Lively. Known for her gorgeous long blonde locks, Lively’s colorist on set, Rona O’Connor transformed her from blonde to brunette to match the mysterious and seductive personality for her recent role as Carol Ferris. The secret behind the switch? To bring Blake’s hair back to life, O’Connor relied on Kerastase Paris’ Reflection line to restore nourishment and shine to her color-treated hair. The highly advanced formulas enhance the hair’s natural beauty to revitalize dull and damaged tresses. O’Connor recommendsKerastase Masque Chroma Riche to not only soften Blake’s hair but to also give her locks that signature shine. To finish her look, O’Connor used Kerastase Chroma Cristal, a shine-perfecting mist to enhance the color and give Blake the extra protection her hair needs. Blake can continue to be a hair-color chameleon for her next role, which requires her to become a redhead, and will rely on Kérastase to keep her hair healthy and beautiful!