In Hindu tradition, the hair from birth is associated with undesirable traits from past lives. Thus at the time of the mundan, the child is freshly shaven to signify freedom from the past and moving into the future. It is also said that the shaving of the hair stimulates proper growth of the brain and nerves, and that the sikha, a tuft at the crown of the head, protects the memory. In days gone by Temple hair, as it is also known, was used  for mattress stuffing as well!!!