Swissvax Cleaner Fluid Professional Medium 500ml SE1022520 Metropolitan Vacuum sturdy plastic sturdy plastic then turns red purple as it penetrates brake dust Cleaner Fluid Medium is applied evenly (only) on the affected areas of the paintwork using a Cleaner Fluid pad and is worked in doing longitudinal strokes under medium to strong pressure The friction applied by this application technique causes the innovative micro granules contained in its formula to wear away against one another diminishing for a progressively finer abrasive polish allowing you to remove any irregularities on your automobile's paintwork while only abrasing the minimum required of its sensitive surface