Usually available as Dual Action or Rotary, the use of polishing machines is required to remove defects in paint. The Rotary is for the more experienced detailer, the Dual Action is safer for the beginner to car detailing. Either way, great care is needed for this aspect of car cleaning. A few practice panels would be a good idea! The correct grade of car polish is also necessary, as is a good set of polishing pads.