Select your desired heat and speed settings on the Hair Dryer. Rough-dry hair until it is 80 percent dry. To style, divide hair into three- to four-inch sections. Place a barrel brush beneath the first section, starting at the root. Follow the brush with dryer, pulling through to the ends of the hair. When you reach the ends, roll hair back up to your head and hold. Continue styling this way until the section is dry. Release and move on to the next section.