Mariska HargitayTHE LOOK Short bob with sweeping bangs HOW-TO Apply a light styling glaze and Kerastase Volumactive to hair and massage into roots. Blow-dry hair halfway. Section off hair and finish blow-drying with a flat brush. Mist with Ellnet hairspray. INSIDER TRICK The best way to make this look work is to invest in a great cut, says stylist Patrick Melville. BUY ONLINE NOW Kerastase Volumactive Expansion Spray, $34; www.fredsegalbeauty.com.