Clean the window. Rub it into the glass with a cloth like applying wax. Let dry and buff. Just like waxing.
I tried the product and it made a mess that was very difficult to remove. I can only guess I didn't apply it correctly or didn't use enough product.
Maybe I'll try it again this year.
I used to use it on our vehicles and during the day it was beneficial. But I drive a lot at night and the Rain X puts a thin film on the glass that causes a lot of glare and a bit of a "foggy" view. So I stopped using it as the wipers on all our vehicles work great.
The dealership applies a Rain X coating to the windshield of our new pickup and it's really pissing me off at night when I drive home after work. If I knew an effective way to get the stuff off I'd do it, but the only thing I know is just to let it wear off. Can't be too soon for me.
Tried it many times. And we know how to apply it correctly. Totally worthless in our opinion. The light mist and rain we get here isn't heavy enough to bead up and run down the glass so we need to use the wipers anyway, which renders the Rain X coating ineffective very quickly.
Rain X is amazing, but you absolutely must make sure its wiped/buffed completely off. When you think its gone wipe a few more times.
I would imagine just good old often forgotten ammonia would remove it. I use ammonia all the time, it is a great grease cutter, glass cleaner, bildge cleaner, diesel spill cleaner, clothes freshener, etc.
When all else fails, follow the manufacturers written directions.
Rain-X® Original Glass Treatment - Rain-X
I bought a 70 year old Singer sewing machine off ebay for sewing canvas. Apparently, some little old lady had been sitting at it, sewing, and smoking cigarettes for most of its life. Ammonia on a rag made quick work of getting the brown stains off it.I would imagine just good old often forgotten ammonia would remove it. I use ammonia all the time, it is a great grease cutter, glass cleaner, bildge cleaner, diesel spill cleaner, clothes freshener, etc.