If hand sanitizer kills 99.9% of germs, what stops us from using that all of the time instead of hand washing?

Question

If hand sanitizer kills 99.9% of germs, what stops us from using that all of the time instead of hand washing?

In: Biology

Answer 1

Also, I doubt everyone uses hand sanitizer correctly. Pretty much everyone I know always uses far too little sanitizer. It should take about 20 seconds of hand rubbing for the sanitizer to be dried.