Works fairly well.
I had my doubts about this when I first used it. I read the instructions and made sure to apply it as directed. It's a little nerve racking as it dries clear and it's Hard to tell if it's going to work or not. The trick to to apply really heavy coats. I usually do one and let it dry then follow up with a second. I have only had one issue where it leaves marks on the glass. It's useful for doing camouflage on aircraft or tanks without using silly putty or blu tack. I recommend this product as it can be easier than cutting pieces of tape for masking.
