Lift it. Boost it. Own it. L'Oréal Advanced Hairstyle BOOST IT Blow Out Heatspray is a high-performance, lightweight heatspray that offers lasting volume and heat protection to achieve your ideal blow out. Specially formulated to work with the heat of your blow dryer, or any heat tool, our unique formula not only helps protect from heat damage, but also infuses volume. For a full, touchable blow out that lasts.