I picked up an unopened vintage bottle of Chanel No 5 for my wife. Probably from the 50's. Still smells great. This was a lucky find, it was still wrapped in cellophane, and the wax seal was intact. Waiting on the first smell though was anxious. Depending on storage, vintage juice can be hit or miss. So I am going to say two years is bunk. Of course, I'll bet six months on the dash board of your car in the texas heat would kill something.