Why does hand sanitizer feel cold? #shorts #science

The video explains how isopropyl alcohol, found in products like hand sanitizer, causes a cooling sensation on the skin. This occurs because alcohol evaporates quickly, transferring heat from the body to the alcohol. The weak molecular interactions in alcohol allow it to evaporate with minimal energy, taking body heat with it and leaving the skin feeling cold. This process is efficient, so there's no need to wash off the alcohol.

What role does body heat play in the evaporation of alcohol?

Why is it unnecessary to wash off hand sanitizer after using it?