Helen of Troy 1559 Thermal Hot Air Brush, White, 3/4 Inch Barrel by Helen of Troy. $25.10. Tangle proof swivel cords. Barrel holds heat for faster drying and styling. Cool tip. High and low heat settings. Barrel rotates to ease tangle free curls. Gold aluminum barrel holds heat for faster drying and styling. Nylon brush bristles gently grip hair for exceptional control. Innovative brush and barrel design dries hair from roots. 1 inch barrel creates full curls and body.