In this case, we're talking about that tube of super glue — one of the best glue types to keep on hand in your home – often tucked away in the back of a junk drawer and promising a quick fix for a broken coffee mug or a loose cabinet handle. The truth is, once you open a bottle of super glue, its days are numbered. In fact, if you try to use a bottle that has been open for over eight weeks, you are going to be frustrated. So if you're wondering how long super glue lasts after opening, all you need to know is that once it has gone bad, there is no reviving it. But knowing why this happens can help you avoid this problem in the future and prevent a failed repair attempt.