Thick, bouncy wavesHOW-TO
Air-dry hair and once it's almost completely dry, blowout with a round brush. Curl sections with a one-inch iron and hold for 15 seconds to lock in the wave. INSIDER TRICK
Prevent tips from drying out by applying a silicone-based serum on the ends.BUY ONLINE NOW
BioInfusion Smoothing Serum, $15;
. Try on Christina's hair now!