The curved design offers closer contact with the scalp and brings hair to the center of the brush. This creates the tension needed for quicker drying time and a straighter finish. The heat-resistant nylon bristle adds shine. T-Curve Hair Brush Silver Nano Ionic is your round brush upgrade! nano ionic in the barrel and bristles helps reduce frizz and add shine. Cuticles are sealed, producing a smooth, soft texture from roots to ends. It creates loose curls and waves in medium to long hair and helps straighten and add volume to shorter and medium styles.