Armor All Ceramic Glass Treatment & Cleaner - 18 OZ

This is incredibly good for the price. Can't get over it. But I can't stress this enough: you HAVE to apply this in the shade or after the sun has gone down and the car is not hot. Even winter out in the sun isn't going to work. There can't be any sunlight on the glass. So, work in the shade or at night, wipe with one side of the towel and thoroughly buff off with another side of the towel and you'll get a SUPER durable and extremely hydrophobic surface. I also would personally clean the glass first with some regular glass cleaner and use this product purely as the ceramic coating. After using a bunch of different methods including those more expensive, I don't see myself ever using anything else. The $6 bottle will probably get you about 15 uses, including ALL outside glass, not just the windshield.

For the price, you can't beat it. We've had rain for about 4 days straight on and off, and it still seems to be working properly. Someone said (youtube video) you can also spray on, and rinse off, and I tried that and it left spots. So I would say just read the instructions and it'll work fine. Armor all stepping their game up, and a good price! Keep it up.