A smart hot brush for quick and effortless, 3D volume that creates body from root to tip. * Preset to the optimum styling temperature of 365°F. The 1. 25 barrel features smooth 0. 5cm nylon bristles for maximum root lift creating instant volume and body from root to tip. * ghd's ultra-zone™ technology monitors heat 250x a second to maintain the healthiest temperature without extreme heat for healthier-looking, long-lasting voluminous results. Key Benefits: 2x more volume from root to tip** Pre-set to the optimum styling temperature of 365°F for no extreme-heat styling damage Ultra-zone predictive technology monitors heat 250x per second across the entire barrel Adds fullness and bounce 8/10 agree** Adds root lift and volume 9/10 agree* Heats up in 25 seconds Smooth, half-centimeter nylon bristles to create gentle styling tension, allowing close contact with the root for maximum lift Automatic sleep mode after 30 minutes of non-use 2 year warranty Professional length 8. 8ft cord. Universal Voltage DISCLAIMER: *consumer testing, 111 women, June 2019 **vs. naturally dried hair | ghd Rise Volumizing Hot Brush | Dermstore