Many people ask if Bailey's Irish Cream expires, and the answer is yes, it does eventually expire. However, it has a much longer shelf life than most liquor, so you don't need to worry about it going bad anytime soon.  The average shelf life for an unopened bottle of Bailey's is about two years.  Once you open the bottle, the clock starts ticking, and it will only last for about six months before it starts to lose its flavor.  So if you want to enjoy your Bailey's for as long as possible, keep it tightly sealed in a cool, dark place. If you notice that your Bailey's has started to change color or texture, or if it tastes off, that's a sign that it has gone bad, and you should discard it.  So, while Bailey's may not last forever, it's definitely a liquor you can enjoy for a long time if you take good care of it.