What does friction do when you wash your hands?

most dirt and grime is on the outer most layer of skin. rubbing exfoliates the skin by a layer or two and the dead skin washes away with the dirt and grime still attached.|||Scrubs dirt and dead skin cells off of your hands.|||IT helps in the process of killing germs.THAt and along with soap+ water all help in fighting germs+flu+bacteria.|||creates suds. oh, and makes the microbes move around and off of the skin.|||Ejaculates?|||friction-rubs off dirt, grime and skin cell which may have been contaminated by bacteria and virus matter... if you use soap it also makes a lather that helps to lift off debris and germs....|||removes imbedded dirt and grime|||It gets your skin clean.