In article .com,
Andrew Sarangan wrote:

Check he http://www.southwest.com/travel_center/toiletry.html
where it says hazardous toiletries can be carried if they are less than
18 ounces each.
Nail polish remover is specifically mentioned.

Interesting; guess they have radically differing policies at different
airlines. Seems funny that Southwest won't allow a dog on board, but
acetone's OK. grin