Paul Mitchell Express Ion Round Brush - Large Paul Mitchell Express Ion Round Brush - Large Sculpt. Set. Style. The perfect blow out awaits with the Paul Mitchell Ion Round Brush. What It Does Tames unruly strands and delivers a smooth, polished, frizz-free look. How It Works The aluminum barrel retains heat while blow-drying, helping to sculpt and set your style. Infused with Express Ion Complex™, the barrel and bristles work together to accelerate drying time and eliminate static. The innovative corkscrew-shaped bristles in this brush glide through hair effortlessly, enhancing shine and smoothness. Why You'll Love It Cuts down on drying time while leaving hair sleek, shiny, and under control.