Like everything, soap is made up of millions of molecules and those are released as soon as soap gets wet. For washing hands, you apply soap and rub them together. This rubbing is the ‘friction’. Water, by itself, is unable to get rid of germs but soap helps break down the naturally produced oil from the skin. Germs stick to this oil from the skin. Due to the friction of soap and rubbing of hands, soap molecules slide easily on our skin, combine with dirt and drain them away with water leaving your skin clean.
Why is soap slippery?
