To provide a waxing technique in which wax does not happen to be applied onto window glasses when washing and waxing.

A glass coating agent in a bottle-type container for application or its solution, or a glass water repellent protective agent or its solution is applied or injected from outside to the entire body of a washed automobile, ship or aircraft, or a portion 7 of a transparent component of the entire body dried by a drying machine after the wash, or is distributed by a wiper after the application or injection, or is dried by the drying machine after the application or injection, or is dried by the drying machine after the distribution after the application or injection. In any of the above four conditions, a wax fluid is applied to the body while preventing wax fluid from being applied to the entire body or the transparent component portion 7 as much as possible, and the wax fluid is then dried or is washed away by water.