I used this stuff today too.. I only put on a single coat around my windows and other small plastic and plastic/rubber area's. It seemed to work decently im sure if i put more coating's of it on i would have noticed a better result, i also used the head light cleaner/polish stuff... didnt notice it doing much of anything at all though. My lights arnt hazed over or anything im probaly going to try them bolth again this weekend and use multiple coats of each. IMO the back to black is worth the buy.