"About this item [3D Anti-Scalding & Curved Back Straightening Brush, 4-In-1 Styling Brush] This Sleek Chic 3D Thermal Straightening Brush adopts a 3D anti-scalding design, which can completely avoid scalding the scalp and skin. The 25 sharp-angled comb teeth make it easier to grab the hair and slide through the hair easily to reduce tangles. The scalp-fitted design can straighten your hair to the maximum extent, and the curved back design allows the hair to bypass the back plate for curly styling. [Eliminate Frizz, Smooth, and Straighten Brush] With 12 million negative ions, the straightening brush makes your hair shiny while straightening your hair. Reduce the damage of frizz and static electricity caused by high temperatures, and maintain hair volume. [60s Instant Heating, 8.3 oz Lightweight & Easy To Use] The powerful PTC heating layer provides consistent, fast, and uniform temperature across the entire surface. It reduces the number of passes for faster styling making it perfect for busy mornings. Weighing only 8.3 oz, it reduces styling fatigue and is suitable for travel. [Suitable For All Hair Types] This Sleek Chic 3D Thermal straightening comb has 5 temperature settings, from 320℉ to 392℉ salon high temperature. 320℉ for thin hair, 338℉ for dyed/dark hair, 356℉ for soft hair, 374℉ for coarse/thick hair, 392℉ for thick/curly hair. Straighten and smooth your hair without flattening or wrinkling like a flat iron."