You may observe that when any part of our body is cut, we feel very pain but when we cut our hair we don’t actually feel pain at all. Hairs are made of dead tissues and keratin which is a dead protein. They are dead cells and when we cut them using scissors, the scissors cutting the dead cells because they are not connected with nerves.
Nerves are the parts of the body which feel pain due to their connection with the brain. But the base of the hair is connected with nerve so if we pluck our hair we feel pain. The hair develops on our head is around 13 millimetres per month. An interesting fact is that about 100,000 hair are there on the head of an average person