Sammy J. Tartar, age 12 of Russell Springs,  and  to Kay Glynn, age 12, of University City, PA. , for their question:

Why doesn’t it hurt to get a hair cut?

When you stub a toe, cut a finger or any other fleshy part of the body you feel a pang of pain   and the pain keeps hurting on and off until the wound is healed. This feeling is an alarm signal from the nerves which guard the body to the brain telling you to do what you can to repair the damage. But the hair and nails are made of lifeless cells which have no pulsing blood vessels and no nerves.

When your hair or nails are cut no living cells are damaged and you don't feel a thing. However   you certainly bet a pang of pain when you pull your hair. This is because the root of each hair is alive with nerves and blood vessels. Hair pulling hurts because the hair root nerves in the skin get yanked.