Goolioo hair straightener brush has combined heating tech with hair comb, which allows you to get your hair straightened while brushing them. Saving time and effort. Ceramic Heating Tech The ceramic heating technology makes it easier when straightening the hair,providing evenly heat thus your hair won’t get damaged by overheated. 3D Brush Teeth The Goolioo hair brush straightener with 3D brush teeth,this design ensures that the root of your hair can also be straightened. High density brush teeth also make it easier and quicker to get hair straightened. Safe to Use The anti-scald tech and the auto off design are used to provide safe use for you and your family. [ Negative Ions Straightener ] Goolioo hair straightener brush combines the functions of a 3D comb and a negative ion flat iron straightener to accomplish both straight and tousled hairstyles, using it easier and more efficient. The hair straightener brush releases 20 million negative ions neutralize static electricity, leaving the hair softer and shinier. [ PTC Technology, 20 Seconds Fast Heating ] The teeth of this straightening comb are made of ceramic, which reduces heat damage by 50% and creates salon-quality results while protecting the hair. The hair straightener brush utilizes PTC heating technology that heats up in 20 seconds, increasing user productivity and saving time. [ 5 Heat Temp Settings for Different Hair Types ] This hair straightening comb has 5 temperature settings from 266℉ to 410℉ for all hair types.Users can choose the right temperature according to their hair type so as to avoid damaging their hair and create a soft, straight and voluminous hairstyle. [ Anti-scald & Auto Power-off Function ] This hair straightening comb has an anti-scald design on the outer frame of the 3D teeth to protect the scalp. In addition, to ensure safety, the hair straightener brush automatically shuts off the device after 30 minutes, so users don’t have to worry about forgetting to turn off the power. [Portable and Travel-Friendly] The lightweight design compatibility make the Goolioo hair straightener brush perfect for travel. Whether you’re at home or on the go, you can easily achieve salon-quality results with this compact and efficient styling tool.