Straightening Brush - Hair Straightener with Built-in Comb, 30 Seconds Quick Heat and 6 Temperature Settings and Anti-Scalding Perfect for Home Profes Let your most colorful makeup look radiant! Beautiful Straight Hair 3D Densified Teeth 3D Teeth - The Ring Straightening Brush is designed with 3D teeth to straighten the appearance of hair even at the roots. Fine pitch - Unlike other brushes, the fine pitch of 0.07 inches (about 0.2 cm) increases the contact area between the teeth and hair, ensuring that all hair is heated and against the surface of the teeth, completely straightening the hair. With Ionic Coating - The Enhanced Straightening Brush features an ionic coating on the heated surface to keep hair shiny and healthy. During the styling process, millions of heat are released to form a protective layer that effectively reduces thermal damage to the hair. The extra ions deeply repair damaged hair and split ends, helping you achieve straight, frizz-free hair. Fast heating, large area saves half the time PTC heating technology - The hair straightener adopts PTC (positive temperature coefficient) heating technology, which quickly heats up to 350F in 30 seconds. 20% increase in heating area - Due to the larger heating area, one comb can cover more hair, heating quickly and evenly, saving you a lot of styling time. Perfect for busy mornings and a quick make-up before heading out. Anti-scalding, self-closing protection. Auto Power Off - The comb will automatically power off after 30 minutes to keep you and your family safe.