Question

Why do we feel cool while washing our hands with a hand sanitizer ?

Answer 1

Answer:

Hand sanitizers were developed for use after washing hands or for those times when soap and water are not available. They are gels that contain alcohol in order to kill the germs present on the skin. The alcohol works immediately and effectively in order to kill bacteria and most viruses.

Answer 2

Answer: The high energy molecules in the sanitizer evaporate from the hand due to which heat is lost after evaporation. This results in cooling of the surface (skin)