First aid to help prevent infection in minor oral irritations. Protects against airborne germs (offices, public spaces, travel, elevators, classrooms, malls, restaurants). Kills 99.9% of infectious germs.* Portable anywhere, anytime use. Great tasting flavor. No known drug interaction. Non-habit forming. Alcohol- and sugar-free. 35 doses. Up to 6 hr protection per dose.** Clinically proven.** *Kills 99.9% of many common harmful germs and bacteria. **In a clinical study, Halo continued killing germs for up to 6 hours.