A blowout is a hair styling technique that involves washing, conditioning, and blow-drying hair into a desired style. Blowouts can be done at home or at a salon, and typically include a hair wash, blow-dry with a round brush, and touch-ups with a flat or curling iron. The resulting style can be straight, curly, or voluminous, depending on the desired look. Blowouts can last anywhere from three to six days, with added volume and shape remaining intact. The cost of a blowout can range from $40 to $100, depending on the salon and any additional services.