This may be a complete noddy question. I new to detailling, but it took the plunge and bought all the bits needed for the job t an extent. Now last Sunday I washed, clayed, polished and waxed. The car is looking a bit mucky again due to a nearby building site and mucky rain. If I washed (maguiars gold class shampoo and conditioner) and dried, would I need to polish and wax again?