So I purchased this plastic window restorer off ebay the other day for 6 bucks with shipping and went to the car wash today to try it out. I only have a soft top for my jeep and its 7 years old now so my plastic windows are getting hard to see out of.
this stuff worked pretty well the back window especially looked alot clearer. It works kind of like a wax or polish you apply it on, let it dry then buff it off. I was pleased with the result and definately thought it was worth the 6 bucks. My windows don't look brand new but they are a hell of a lot easier to see out of now.
If you are interested in purchasing this item just search ebay I bought it from a sell called "upper bound" the only drawback was that you don't get too much of the product only 1 oz. which is basically enought to each window inside and out once.