Quote:
Originally Posted by carpriver
It goes bad when it goes thru the washer and dryer!
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Not always true. I always carry some in my pocket and have washed a tube at least a dozen different times. Sometimes the the top end is a little messed up but it's still effective. Some brands hold up better than others but they've all survived.
Back to the original question, I've used some that I know was over 5 years old. It was just fine.