I used it on my glasses at the field today,and LOVE it.
Roughly treated my bathroom mirror tonight before taking a shower.Now my back has been hurting all weak..that means about a 15 minute searing shower.Once I was done I got out,and let just the pure hot water run through the shower for about 5 minutes more.Here is the result.Bear in mind I had to keep backing away from the bathroom,because the camera wouldn't stop fogging.