1.5" ceramic barrel - emit far-infrared heat that instantly penetrates the cortex of the hair cuticle, heating from the inside out. the hair is heated evenly and in half the time of conventional heat, reducing the risk of damage. 0.5" nylon bristles - to gently grip, smooth and style all hair types and lengths. ionic generator - to increase negative ion output resulting in shiny, smooth, frizz-free results with zero static. 356°f / 180°c temperature - to smooth all hair types and textures. Never used