Eli5: How come hand sanitizer has an expiration date? What exactly happens once it goes past it?

Question

Eli5: How come hand sanitizer has an expiration date? What exactly happens once it goes past it?

In: Chemistry

Answer 1

Always assumed it was because of the high alcohol content needed to make sanitizer effective mean that it was also prone to evaporation and thus the alcohol content would go down over time eventually making it ineffective