Straighten, detangle and style your hair, leaving it lustrous, silky and shining with this professional quality heated hairbrush. Just a few minutes of brushing will leave your hair straighter, less frizzy, and more manageable. Select any of 11 temperature settings between 365 F to 450 F (185 C - 230 C) and read out the actual temperature in the LCD display. Nubbed bristles massage your scalp while the heated bristle base warms your hair to straighten and untangle, and the ionic technology eliminates static. Usage Guide: Press the power button for 3 seconds to switch on. Press the "+" and "-" buttons to select the desired temperature: 365 F (180 C) recommended for delicate and fine hair 410 F (210 C) recommended for medium texture hair 450 F (230 C) recommended for thick or curly hair To switch the display between Fahrenheit and Celsius, press "+" and "-" at the same time. Recommended for use only on dry hair. For best straightening results, separate out a small handful of hair at a time and hold it by the end as you brush it out. For longer-lasting straightening, use a styling lotion, then wash hair before using the straightening brush. Why ACEVIVI? At ACEVIVI, we specialize in the design, production and sale of fine beauty products such as cosmetics, makeup brush sets, mask, and hair removal epilators. We are committed to your 100% satisfaction, and will happily give you a replacement or refund for any product found defective.