In addition, wash rubber floor mats and dry. Apply a non-slip dressing so that the driver's feet don't slip and slide while they're trying to do important things like braking. Use compressed air and detailing brushes to get out accumulated dust from the buttons and crevices on the dash and interior doors. Wipe hard interior surfaces with a mild all-purpose cleaner. Use an interior dressing like Armor All to finish it off. Detail car air vent grilles with detailing brushes. If you're not going to use liquids afterward, your detailing brushes should be a super-absorbant material like microfiber cloth, which picks up dust and dirt efficiently. Lightly mist some spray-on vinyl dressing onto the vent grilles to make them look brand new.