How do you grasp rid of ash on a fanlight? My friend posted a comment ... "how the heck do you get bad...

My friend posted a comment ...

"how the heck do you get bad wildfire ash that's plastered on windows?

i'm trying windex and adjectives that crap..

sprayed it down with a hose for the longest time..

scrub the heck out of it...

IT'S NOT COMING OFF!!!!!!!!"

But I don't know how to help and looked online everywhere...does anyone know the answer.
How do I receive dye out of my...
Answers:    wet and a straight razor run through. keep the skylight wet and the blade sharp
How do I win rid of the cigarette...
you cant, if windex doesnt work consequently it wont, try sandpaper though, but careful of scratch your window