Wonder Wheels Wheel Sealant leaves an invisible, protective shield over the wheel surface, creating a barrier against the build-up of stubborn brake dust, road grime and dirt. Once applied, this revolutionary instant wheel sealant produces a super repellent nano film, which when rained on or rinsed with water, will self clean. It's easy to apply and suitable for all wheel types. Simply spray onto wheels after cleaning with a good quality wheel cleaner.Warning:For outdoor use only. Extremely flammable aerosol. Keep away from sources of heat. Keep out of reach of children.