Home.Co- Hot Air BrushIONIC TECHNOLOGY REDUCE DAMAGE The negative ions released by the hot air comb can increase the moisture of the hair, reduce the damage of the hair, nourish the hair, make the hair smooth, healthy, soft and without static electricity. AUTONOMOUS ADJUSTMENT: The bottom is a rotary adjustment gear switch, which can be adjusted to the current working state by rotation, and four gear positions are set: HIGH,LOW,COOL,OFF. LED prompt light to easily identify