Paul Mitchell Smoothing Iron works great for all hair types and textures: chemically straightened, damaged, fine, medium, coarse or ethnic. Enhanced Styling. Even heating across the paddles quickly closes the cuticle for brilliant shine and a glass-like finish. The Smoothing Iron's beveled edges mean no line of demarcation and leaves hair beautifully smooth with volume. No more hot spots! The entire paddle surface is evenly heated using ceramic fusion designed to protect against extreme heat. And it's five temperature settings - ranging from 170 to 400 degrees - let you choose the correct heat for your hair texture. 1 3/8” plate size.