Hair Dryer, Curler, or Flat Iron? Don't worry. No tutorial on curling your hair with a flat iron. 3. Or if the problem of styling your looooong hair has kept you away from curling irons, the Bio Ionic Long Barrel Styler's barrel is 2 inches longer than normal curling irons'. The directional buttons for the software are straightforward to use and if I by chance press the button for the other means of which I'd just like the barrel to spin, it is a quick and straightforward correction. Get this 1.25-inch barrel one from Amazon for $130.84 (and check out tons more varieties and barrel sizes