[Double Negative Ions and Multi-block Temperature Control]-- The negative Ion straightening brush has 23 million levels of negative ions, which more effectively moisturizes the hair cuticle and reduces frizz, knots and split ends. Multi-speed intelli FAST HEATING--The straightening comb has a variety of adjustable temperature settings and includes an LED display to help you choose the heating method that suits your hair. ◆Even heat--has a constant temperature function to prevent hair damage, ensu ◆Ideal Gift--It is an ideal gift not only for yourself, but also for your lover, such as girlfriend, wife, daughter, mom, grandma, aunt, sister, friend with long hair or beard. ◆Intimate design--360°rotating rope, easy to operate, concave button to a Before straightening the hair, insert the straightening comb to preheat for 20-30 seconds. 2. After the comb is preheated, comb the hair with an ordinary comb first. 3. Use clips to layer the hair. Precautions: 1. From 130°C to 160°C (from 266°F to . From 175°C to 200°C (from 347°F to 392°F): Suitable for thick, frizzy and rough hair. 3. Make sure the hair is completely dry and comb the hair before straightening to avoid the problem of pain caused by the straightening brush pulling the hair dur