I had a crack in my windshield that I repaired with Rain X windshield repair kit. I got this kit because it said it can repair cracks, chips, Bull’s Eyes and stars. I’m going to keep this repair kit in my truck when I travel. The best time to repair a crack is as soon as you can, to stop the crack from spreading. Often I’m in places where there is no one around to repair my windshield and I think this kit just might do the trick.