1. Evenly spray Special Rim Cleaner on the dirty rims. Note for the 1 l spray bottle: If the trigger is pulled quickly it emits a wide and flat spray pattern, while pulling it slowly results in a concentrated spray pattern. 2. Allow to act for 5 – 7 min. depending on the degree of contamination, but do not allow to dry. 3. For removing very stubborn dirt, rework with a sponge or brush. 4. The cleaning process can be checked visually by watching for a change of color; the optimum effect is achieved when completely purple. 5. Thoroughly rinse the rims with a high-pressure cleaner. Note: Do not use on hot rims or in direct sunlight! Test material compatibility on sensitive surfaces in an inconspicuous place before applying!