High quality, simply brush through for sleek shiny straightened hair. Instantly give you perfect new beautiful hair style, anti-scald and anti-hair broken, negative ions reduce frizz while thermos plates smooth cuticles. Brushing action reduces risk of dry damaged hair unlike traditional hair straighteners. Temperature setting guide: Press the "+" "-" buttons simultaneously to switch between Celsius and Fahrenheit. Thicker and curls hair: 410~446 ℉ (210~230 ℃) Common hair: 374~410 ℉ (190~210 ℃) Thin and soft hair: 338~392 ℉ (170~200 ℃) Instructions: 1.Please keep hair dry and neatly groomed before using. 2.Insert the plug into proper the socket. 3.Turn it on and adjust the temperature, you can use when the temperature reach what you want. 4.In the process of using, one hand pulls hair end and comb with straighter. 5.It will be turned off by an hour automatically, turn it on when you use against. Safety precautions: In order to make sure you can use this product properly, please pay attention to the following security matters. 1. Do not allow children below 14 years old use this product alone 2. Do not use this product to beat or drop it from upper air, please do not use it again if it is damaged after collision 3. Do not transform, disassemble and repair this product . Warranty: Top-notch warranty provides 12-month worry-free warranty.