Rain X Original Glass Water Repellent Treatment dramatically improves wet weather driving visibility. Simply apply the treatment to exterior glass and watch the raindrops fly off your windshield while driving. Rain X helps improve visibility by repelling rain, sleet and snow,In tests conducted by a major university, better visibility improved driving response time up to a full second or more. At highway speeds, thats almost four car lengths of extra stopping distance.Try Rain X Original Glass Water Repellent Treatment on your glass shower door and home glass windows for more water-beading magic.