I've used this product a few times now and the more I work with it, the better it gets. This is a great product for your glass. To my surprise, the benefits from using it on the inside of the glass outweighed the benefits from the outside. I've always had problems with hazing on the inside, but this took care of that. I recomend application with a spong applicator, but if you use a terry applicator, you can apply with one side and flip ot over and remove what little is left with the other side Great stuff:xyxthumbs