The product does what it says, I had it for a month and the glass did not fog up at all. My glasses used to fog up easily because I vape, which leaves a lot of moisture in the air, but after using this product, I had no issues. The process is relatively simple, I think I put too much on for the first time, but then I cleaned the glass very well with kitchen paper until all the initial fogging disappeared, and for a month I had no problems with fogging. I would buy it again without hesitation!

It does nothing.. I put it in the car and in the bathroom mirror, and it still collects a lot of moisture..

For the money it asks, it is perfectly fine, it does exactly what it should, it doesn't fog up the windows, it is quite good

It is mediocre in performance, meaning it lasts 1-2 weeks but it is impossible to use on glass without leaving stains (like oil marks). Personally, I would have preferred to have spent a little more on a product that does the job.