Which reference point indicates a change in head shape?

The four corners of the head are significant in hairstyling because they denote areas where the shape of the head transitions, thereby indicating changes in head shape. These points serve as critical markers for establishing the structure and balance of a haircut. Stylists often use the four corners to guide their cutting techniques, ensuring that layers, angles, and overall shapes accommodate the natural contours of the head.

When executing a haircut, understanding the location of the corners aids in achieving a harmonious design. For instance, if a stylist observes how the hair lays differently around the corners compared to other parts of the head, they can adjust their technique to create a more tailored and flattering look.

In contrast, other options such as the nape of the neck, the crown, and the forehead are important reference points but do not specifically represent changes in head shape in the same way. The nape is more about the length and style in that area, the crown generally indicates the top section of the head rather than a changing point, and the forehead relates to the front hairline. Thus, the four corners are key indicators for identifying transitions in head shape and guiding the haircutting process.