Prevents blisters, hotspots and irritation by creating clear, durable barrier on the skin that blocks friction and rubbing. Apply before putting on your favorite heels, flats, sandals, sneakers or any other shoes that rub you the wrong way Aerosolized spray dries clear in just 90 seconds to provide 6 hours of anti-blister protection Hypoallergenic, dermatologist-approved, and clinically proven safe and effective. Naturally breaks down in about 6-12 hours to be washed off with water