What technique is used to add volume to hair during a blow-dry?

The technique of lifting is specifically designed to add volume to hair during the blow-dry process. This method involves using the blow dryer in conjunction with a round brush or your fingers to lift the roots away from the scalp, creating height and fullness. The lifting technique is particularly effective on fine or limp hair, as it encourages the hair to stand away from the head, thus enhancing the overall volume and body of the hairstyle.

Smoothing, while beneficial for eliminating frizz and creating a polished look, does not focus on adding volume. Scrunching is more often associated with enhancing natural curls or waves, rather than providing lift at the roots. Flat-ironing is a technique used to create straight, sleek hair; it generally reduces volume rather than enhancing it. Therefore, lifting is the most appropriate method for achieving additional volume during a blow-dry.