Hair How-To: Emmy Rossum's '50s Waves
Brush out curls (Magallones used a Mason Pearson brush) to relax the wave. "I then used my fingers and a comb to shape the waves into the desired '50s-inspired look." To lock in the curl and make them shine like Rossum's, use a shine-boosting finishing spray like Rene Furterer Vegetal Finishing Spray.
Source: Splash News