Very effective for energy glass. From brown/black it became transparent!!! I will definitely order again.

Awesome product, it does a great job. If you clean the glass relatively often and don't wait for the dirt to become stubborn, cleaning becomes very easy and you also avoid the mud of ash.

Slightly better than cleaning with ash. It definitely requires repeating the spraying 2 or 3 times and still cleans the light smoke. I won't buy it again, there is a better product where you actually spray, wait 1 minute, and clean.

Excellent product
No more rubbing on the dull fireplace
I sprayed. I left it for a minute, wiped it with a paper, and it cleaned.
I would easily buy it again

Several sprays are needed to clean the glass, unlike another tested product which cleans immediately with just one spray.