To provide a hair iron which eliminates the scorching of hairs stuck on to the iron by modifying the surface of the iron body so as to make hairs glide easily thereon along with excellence in resistance to chemicals and corrosion.

In the hair iron 10 using an open-close type electric heater 16 having a rod 12 and a globe 14 rotatably linked almost at the center thereof, the above-mentioned purpose is achieved by applying a DLC coating 20 on the rod 12 at least on the heating side thereof. It also can be done by applying the DLC coating 20 only on the surface of the rod 12 on the side thereof contacting the globe 14. The DLC coating 20 is abbreviation for diamond like carbon, referring to an amorphous carbon film composed mainly of carbon and hydrogen with the hardness thereof closer to that of diamond.