He stopped, in the nick of time!I have seen them, but have never had a haircut with them. My barber stopped shaving necks many years ago. He said that his insurance carrier requested he do so because of the threat of AIDS. He said that if he would happen to cut one customer's neck that may have the AIDS/HIV virus with the blade and then failed to sterilize it that he could possibly transfer the infected blood to the next customer, if he would cut or nick him.