During a blowout, which tool is essential for achieving volume?

Achieving volume during a blowout is heavily reliant on the combination of a blow dryer and a round brush. The blow dryer creates airflow and heat, which are essential for styling hair, while the round brush adds shape and lift at the roots. When the brush is used in conjunction with the blow dryer, it enables the stylist to manipulate the hair, rolling it up and away from the scalp, thus maximizing volume.

The use of a round brush is particularly effective because its cylindrical shape allows for teasing and curling of the hair, which further enhances the volume effect. The combination also helps to smooth out frizz and create a polished, bouncy finish, which is often the desired outcome of a blowout.

Other tools like a straightening iron, wide-tooth comb, or hair dryer diffuser do not serve the same dual purpose of both providing volume and styling in a way that promotes lift and bounce. While each of those tools has its specific uses in hair styling, they do not directly contribute to achieving the voluminous look that is characteristic of a professional blowout.