you should be fine if you wash your car again, before we bought polychargers when we used to multiple layer sealants we always washed the car prior to applying the next layer to remove dirt and dusts, if its not taken anywhere we use a cleaning QD, so you should be safe to apply OCW after you've washed the car. Actually some people really treat OCW as a sealant meaning they put it before 476 but based on experience it compliments 476 after better and using OCW after washing is actually what most people here practice




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