Dawn dish soap hot water it'll cut the greasy soot, then get it crystal clear by wiping with some rubbing alcohol and clean white cloth no fabric softener on it and no paper towels they have residue/chemicals in them /on them to increase absorbancy that cause streaking & smearing.
Hands down, the best glass cleaner I have found is Sprayway. It is a foam and does not streak. You can find it at the grocery, Home Depot, Amazon... Very inexpensive and great for cleaning counters, faucets... as well. :)
Every time I clean my mirrors, they end up having tons of streaks and almost look worse than before I started. What could I use to clean them that won't leave streaks...
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My husband just uses windex to clean ours.
Use a degreaser cleaner. May take several cleaners. Then polish off with glass cleaner.
https://www.hometalk.com/diy/clean/house/how-to-clean-your-fireplace-glass-8471412
https://www.hometalk.com/diy/clean/house/cleaning-glass-on-gas-fireplace-26183459
How to Clean Your Fireplace Glass
Cleaning Glass on Gas Fireplace
Dawn dish soap hot water it'll cut the greasy soot, then get it crystal clear by wiping with some rubbing alcohol and clean white cloth no fabric softener on it and no paper towels they have residue/chemicals in them /on them to increase absorbancy that cause streaking & smearing.
Hands down, the best glass cleaner I have found is Sprayway. It is a foam and does not streak. You can find it at the grocery, Home Depot, Amazon... Very inexpensive and great for cleaning counters, faucets... as well. :)
https://www.youtube.com/watch?v=teRkI8j7vAw