What type of line is used to make a hairstyle appear longer and narrower?

The correct choice is vertical line. In hairstyling, vertical lines are used to create the illusion of length and narrowness. When vertical lines are incorporated into a haircut or hairstyle, they have the effect of drawing the eye upward, which can help elongate the silhouette. This technique is especially useful for creating styles that make the face and overall shape of the hairstyle appear slimmer and more streamlined.

When hair is cut or styled with vertical lines, it can enhance the look of length, making it ideal for clients who desire a more elongated appearance. This can be particularly beneficial for individuals with round or square face shapes, as it helps to balance and soften their features.

Other types of lines, such as curved or contrasting lines, serve different purposes in hairstyling. Curved lines can create softness and movement, while contrasting lines add dimension and interest but do not typically emphasize length in the same way that vertical lines do. Thus, understanding the function of vertical lines is crucial for achieving specific visual outcomes in hairstyling.