A blowout look with no blow dryer or hot air required. Simply use the bombshell blowout thermal brush as you would a round brush and blow dryer to achieve a smooth, voluminous blowout in half the time. For added shine - activate the negative ion generator! simply slide the on/off button all the way up until it glows red, then green. for more volume and body - activate the negative ion generator! simply slide the on/off button down until it only glows red.