Rain‑X Original Glass 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, that’s almost four car lengths of extra stopping distance! For the last 40 years, Rain‑X has provided drivers with products to help them outsmart the elements. All Rain‑X products are designed to help keep our customers a confident step ahead of Mother Nature on the road.