Meguiar's® Mild Professional Detailing Clay quickly and safely removes bonded surface contaminants such as overspray, industrial fallout, fresh water spots, tar, rail dust and tree sap mist. Equally effective on paint, glass, metal and plastic. Simply lubricate surface with Meguiar's® Mirror Glaze® M34 Final Inspection®, or Meguiar's® D155 Last Touch Spray Detailer diluted 1:1, and gently rub surface until mirror smooth.