HAIR CUTS DON'T HURT.The reason is quite simple, because hairs are made of dead cells,so we don't feel pain.The dead hair cells are filled with a tough , waterproof protein called Keratin, as are nails, and the skin flakes that we lose daily in their millions from our skin surface.All these things are part of the protective overcoat that cover and protect our body. SKIN - Skin is really thin but quite complex .Its made of two layers ; The epidermis provide protection, and is constantly worn away and replaced.The dermis glues the epidermis to the rest of the body and deals with feelings, temperature control, and food and oxygen supplies WHY SKIN IS IMPORTANT .- Skin provide a waterproof covering around our body. It form a barrier between our delicate tissues and harsh outside world It stops germs