Most people don't use it correctly anyway. You're supposed to soak your hands so they're dripping, rub together and let it evaporate. You see most people just using a small dot on their palms.

I've also read about a certain rare bacteria that thrives on a food additive. I cant recall what it was but I remember it was really expensive to make the suddenly a new methods made it cheap. The bacteria rose as the cost of the additive went down.