The repellant prevents water from remaining on the surface even for a moment by lining the mirror with super-fine, microscopic studs. Compared to conventional hand pump sprays, this aerosol spray creates an even coating and shortens the process. Direction * Clean the side mirror with car shampoo or the like. If the oil-film or water repellent agent adheres, remove it with the cleaner. 1. Spray it evenly about 15 cm away from the side mirror. We recommend putting a towel around the mirror while spraying in order not to get the fluid on other parts. 2. Dry completely (in the summer for 1 hour, in the winter for 2 hours) and do not touch until dry.