To get that polished, red-carpet-ready result, spritz a smoothing detangler lightly across your bangs and comb through so they lay flat and straight (Nelson likes Bumble and Bumble Tonic Primer, $25). He suggests blow-drying with a diffuser to set them in place or, if you're short on time, try his trick and pop on a tight-fitting beanie to keep them in place until they dry.