how long you can preserve perfumes?

Answer 1

I read somewhere that if you refrigerate perfume it will last longer. But it doesn't need to be refrigerated. I do it with all of my perfumes now.You can keep it in its box, somewhere fairly cool and out of direct sunlight it will be fine too.
Definitely works :)

Answer 2

A few years if you keep them away from windows so the sunlight won't get to them. Almost forever if you keep them in the refrigerator.