RainBrella is a treatment chemical made to repel mud, dirt, and rain from windshields. It’s marketed under the Rust-Oleum and Wipe New brand names. The ingredients used include inorganic acids, isopropyl alcohol, and methyl ethyl ketone. To apply it, simply wipe it on your vehicle’s windshield. It comes packaged in convenient pouches that contain two wipes.
Each box lasts only two uses. The instructions are to apply RainBrella, wait for about 5 minutes, wipe it off with a cloth, and wait for 10 minutes. This is to be repeated twice. As advertised, the product is supposed to last 100 washes.