Scientifically speaking the hair that grows on the exterior of your scalp is dead. It contains no nerves, muscles or blood and when cut it does not hurt.
Though we know that the strands of hair may be dead, it's still attached to your skull and you carry it around everywhere with you. The expected thing is to keep it clean and healthy looking. The fact that the hair may be dead, it does not mean that it has is in a static state. On the contrary, the cells in your hair are receptive to exposure to the different types of environment, from the heat of a blow dryer, hair coloring, the drying icy winds to chlorinated swimming pools and nasty styling products. Even dead cells react to their environment.
In medical terms, the hair strand is dead protein, but below the scalp their is active life going on. The roots of the hair needs oxygen, protein and nourishment from hormones and blood supply – much like every other part of your body.
Some ways to prevent balding or hairloss is by: