Which type of line is used to create width in a hair design?

In hair design, horizontal lines are effective for creating width and can enhance the overall appearance of a style. When these lines are used, they often give the illusion of a broader silhouette, which can be especially beneficial for individuals with long or narrow facial shapes. The horizontal lines create a sense of balance and can help to make hairstyles appear fuller and wider.

In contrast, vertical lines tend to elongate and slim the appearance of a hairstyle, while diagonal lines can create movement and interest but do not primarily focus on adding width. Arc lines, although they can add softness and curvature to a design, do not specifically contribute to the creation of width in the same way that horizontal lines do. Therefore, for achieving width, horizontal lines remain the most effective choice in hair cutting and styling.