http://www.sfgate.com/cgi-bin/articl...BAG41O1CDD.DTL
I don't want that stuff circulating around an enclosed environment and having no choice but to breath it for hours. Most nail polish has those nasty chemicals in them.
Acetone (nail polish remover), while it smells worse, is not as toxic in the amounts normally used... however it is much more flammable. It may be considered a paint thinner, and therefore technically not allowed on board... however I'm sure if you have a 100mL bottle of it, you'd have no problem bringing it.