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. 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 How To Use: *Begin with dry, detangled hair. *Section hair and place rise at the roots and move through to the ends of the hair. *Continuously rotate and glide through hair from root to tip.