With the help of Oprah.com (I know, I know… heavy sigh), I found this answer…
Question: Will storing my nail polish in the fridge help it last longer?
Answer: According to Suzi Weiss-Fischmann, executive vice president of OPI, storing polishes in the fridge will slow down the process of discoloration which happens as nail polish ages.
Other answer: Having myriad of flammable glass bottles closed up in a big metal box may not be the smartest move combustibility-wise.
Suggestion: Keep your nail polish in a cool, dry place away from sunlight.
What am I going to do?: No idea. My house is hot. Back under the bathroom sink the polishes go.
Any thoughts on this?