You should have a nice amount of paste and black soot on your towel.
How to clean soot off fireplace glass doors.
Wipe the glass in a circular motion to loosen caked on soot.
Undiluted vinegar is an easy nontoxic first response to clearing cloudiness from the fireplace glass.
Cleaning your fireplace glass outside or in the garage is also a good option.
Make sure that you get into the corners using a cotton swab if necessary.
There is no need to dilute the mixture and it works to shine the glass as you clear the dust and debris from the surface.
Repeat several times or until the soot is lifted.
When we first moved here i scrubbed the glass with windex and a chore boy scrubbing cloth love those things.
One clever all natural way to clean your fireplace glass is to use a newspaper or paper towel and ash.
Cleaning the glass fireplace doors is a regular chore in the winter but luckily i ve picked up a trick to quickly and painlessly remove that baked on soot from the glass.
You can clean a fireplace glass with vinegar straight from the sprayer or dab it on with a clean towel.