SONAX Rim Cleaner acid-free, Wheel cleaner. Extremely effective acid-free, for all types of steel and alloy wheels. Easily removes even the toughest dirt, such as brake dust, oil and rubber residue and other road dirt. USE: spray on the wheel. The active foam starts to turn red when it gets on the wheel. The red foam can be rinsed off. Hard-to-reach and heavily soiled areas can be cleaned with an additional brush or special sponge. The cleaner is not acidic and therefore does not damage the wheels or tires. WARNING! Protect from frost. Do not use on hot surfaces, do not let it dry out on its own. Ph 7. 25L.