Therefore, it’s imperative for drivers to improve their visibility on the roads - and there’s no better way of doing so than with Rain-X Rain Repellent. For the small amount of fogging on the drivers window, re-directing the fans in the car to the driver facing heater got rid of this in a few seconds. There was no need to wipe away the steam on the window. On the passenger side window, there was no steam build up at all. This was after a 40 minute drive when I had to re-direct the fans to remove the small build up on the passengers side. Durability Whilst this technically isn’t a glass cleaner, Rain-X Anti Fog does serve an important function during the colder months.I’m always a bit dubious about the claims some products make. One thing that stood out with Anti Fog though is that it doesn’t claim to completely eradicate any steaming up of the windows. For the windscreen, I purposely only treated sections of it as a comparison to the non treated sections, and it worked exceptionally well. On the side windows, there were a few small areas on the drivers side that did start to steam up, although it took quite a long time for this to happen. I’m chalking this up to there not being enough of the Anti Fog on the microfibre cloth. For that reason, I would recommend going over with a second layer to ensure that there is even coverage.

As with any product that is to be applied as a coating, the glass needs to be perfectly clean. You could use vinegar and water in a spray bottle and it’ll do a great job. I personally used Autoglym Fast Glass to clean the windows, but the choice is yours. As long as it’s a product that will not leave a film or a coating on the glass afterwards. You can also use Rain-X on Shower Doors, or on any glass doors or windows in your home, for more amazing water-beading magic! Keep your shower, windows and glass doors shining and clean with this incredible Rain-X Rain Repellent product. As the name suggests, it is a way to prevent your windows from steaming/fogging/misting up. Choose the definition the you prefer the most. This is for interior use only. Application

I folded up a microfibre cloth several times and applied a small amount of Anti Fog to it, before buffing it into the glass in overlapping circles and then allowed it to dry. Unfortunately, the instructions don’t indicate how much product you need to use. As is always the case with detailing, less is more.