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

Soap acts as an emulsifier which lifts dirt and oil that otherwise don’t mix with water off of the skin, while hand sanitizer only has germ killing properties. A mechanic for example is just as interested with getting non water soluble oils off of his hands as disinfecting therefore would much rather a soap than alcohol.