Rain-X Rain Repellent dramatically improves wet weather driving visibility. Simply apply the treatment to exterior glass and watch the raindrops fly off your windscreen while driving. Rain-X helps improve visibility by repelling rain, sleet and snow. Improve all-weather visibility, safety and driving comfort Helps easily remove frost, ice, salt mud and bugs In tests conducted by a major United States university, better visibility improved driving response time up to a full second or more. At highway speeds, that�s almost four car lengths of extra stopping distance! 200ml bottles.