Features & details 【Negatively Ionic Function】The 2 in 1 MCH heating ionic hair straightener brush Instantaneous release millions of negative ions deep into the hair, Ionic can penetrate into hair core, intensively nourish hair remove static electricity repair damaged hair scales, This helps in improving the overall quality of the hair and eliminating frizz, knotting and split ends, let you hair soft luster again to achieve a beautiful straight salon quality hair that will last for the entire day! 【MCH Ceramic Heating】Most PTC Ceramic hair brush straightener take a long time to heat up thus wasting the time of the user all the while increasing the electricity bill cost, and it contains aluminum, which will cause pollution to the environment. HACHEEY hair straightening brush advanced double-sided MCH ceramic heating has incomparable superiority than PTC in market, It provides a even heat distribution in 30s-40s and fast temperature recovery time. Save time to prepare a hearty breakfast!!! 【Five-speed adjustable】Hair Straight brush has a clear Led display easy to setting five-speed temperature, you can choose the most suitable temperature for your hair and hair style. Thin Fine Bleached Hair 150℃(300℉); Dyed or Dark Colored Hair 170℃(340℉); Normal or Slightly Curly Hair 190℃(380℉) to 210℃(410℉); Thick Curly and Wavy Hair 230℃(450℉). Straight hair brush is suitable for more than 99% of people. 【Auto-off and Anti-Scald】The hair straightener brush automatic shut-off after 30mins no action for security, If you want to use it again, you can press the power button to turn on the appliance. Hair Straightener brush comb teeth is wrapped by insulating silicone head, avoid scalding the head during straightening hair, straightening comb tooth top and around adopts anti static ceramic design, which ensure the tooth surface smooth and constant temperature.