Dual Voltage 1.5 Inch Barrel Round Brush Blow Dryer, Hair Trends Negative Ionic One Step Volumizer Dryer, 4-in-1 Hot air Brush-2.8 Inch Include Bristles

There is no switch to change the voltage, is it really dual voltage? This brush dryer can automatically convert to the local voltage, no need power adapter or manual fix it to certain voltage. Can it be used on dry hair directly? Or wet hair directly? No, this is a BLOW DRYER brush. We dont blow dry dry hair, it will damage hair. After wash hair, towel dry it & rough dry underneath with regular dryer first, apply on heat protection, and detangle the hair, then ready to use it. The high temperature can be really hot, will it hurt my hair? Hotter brush means the water evaporates more quickly, your hair doesnt actually start to get hot until the water is gone, when you feel your hair is hot which mean the water is gone,you need to stop. Is it round shape or oval shape? It is 1.5" round shape barrel (2.8" include bristles), easily to get the root. sealing your roots to make them shiny and smooth makes your hairstyle last longer