Check it out -- search under cel cleaning/ cel 
clean/ dirty cel/ paint/ excess paint under the 
current two archives under message area and you 
aren't going to find headings info for cleaning 
cels. (You are though going to find some info if 
you search some of these topics under title 
strangely enough. I know this because I decided 
to make a list for myself of all of the 
cleaners.) 
You're more likely to find information if you 
know to look under alcohol, mineral spirits, 
window cleaner, etc. . . in other words search 
for something you already cleans cels. If you 
don't know any of this, you're going to have a 
hard time finding the info. 

P.S. Don't worry too much about the nail polish 
remover, I warned him not to use it, but I got 
the impression that it didn't do much damage to 
the cel. More needs to be looked into on this.