Before I applied this to the windshield of my car, I noticed that the wiper blades, although new, left some streaking on the glass, and it could be a bit of a challenge to see outside especially when it rains hard and the raindrops magnify the lights of cars or the streetlights. After application, the wiper blades no longer left streaks, it became much easier to clearly see outside and the water beaded and blew away. At times, it may look like there is no rain on the glass when driving through rain at night.