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Yes, hard liquor lasts for a really long time unopened.
If you open the bottle, you need to keep it refrigerated and it will last for a month. If it is an unopened bottle it should last for about a year :)
Potentially centuries if it is good quality originally.
It should last indefinitely if kept in a cool, dark place.
It was last for decades if unopened.
I have a bottle of Cointreau that was first opened 16 years ago and it still tastes fine!
Chardonnay is good for about 7 years unopened.
Alcohol does not expire when it is unopened.
My research showed that an unopened bottle of Pimm's would last for a year or two. Once it is opened, it starts to lose flavor after a week or so.
As long as it is kept cold, indefinitely.
Nair is said to keep hair from growing back for a month or more. In an unopened bottle, Nair will last indefinitely. Once opened it will need to be used up.