Want a Brushing Express & Volume in Your Hair? L' Oreal Paris Studio Pro Heat It Hot & Go Fast Blow Dry Spray is specially designed to be used with a hair dryer for ultra-fast drying & easier blow-drying, with volume from the root. Its thermo-active technology activates on contact with heat for quick & easy brushing. It neutralizes frizz & rebellious locks & offers body & hold for a perfect volume brushing.