Nixa firefighters ran an experiment Thursday afternoon to determine just how flammable continuous spray sunscreens can be. The results were eye-catching, as all three brands they tested went up in flames. But it's the not the sunscreen itself that is flammable; it's the alcohol that's used as a propellant. Don't worry, though. If you use this type of sunscreen, you're not a walking fire hazard. Firefighters say the alcohol quickly evaporates, and you should only need to avoid open flames for a few minutes after application.