Here are a few ideas that may do the trick. The first is to try a product called "goof off". It comes in aerosol and liquid formula. I have found the liquid to work better and be easier to control. I would suggest trying in an inconspicuous area first to make sure it won't discolor the floor.
Another idea is to perhaps use a hairdryer to heat up the polish and then an old credit card to scrape the polish up as it softens.
If you use nail polish remover just make sure it's non-acetone.
Removing Nail Polish From Hardwood Floor
How can I remove dried pink nail polish from a hard wood floor? I don't want to damage my floor, but need to remove a dried fingernail polish patch about the size of an adult hand.
Ruth from Salt Lake City, Utah
RE: Removing Nail Polish From Hardwood Floor
The quality of the nail polish can determine how easy it will come off. For example, if it chips off your nails quickly try using an old credit card to gently pick it up. If you need to use nail polish remover, try in a hidden area to see how it react/how long until it reacts, etc. If you use a nail polish remover pen or a cotton swab you will have more control. One more thing I am not sure if it works...does WD-40 remove it? I heard it cleans all kinds of stuff. Best wishes! (08/27/2008)