What technique can create an illusion of greater width in men’s hairstyles?

Adding volume at the sides is the technique that effectively creates an illusion of greater width in men's hairstyles. This style utilizes the natural growth patterns of hair, encouraging it to expand outward, which visually broadens the overall appearance of the head. By emphasizing the sides, the haircut can balance facial features and add proportionality, particularly benefiting those with narrow faces or longer head shapes.

Keeping hair flat tends to elongate the appearance of the face, as it does not provide any added breadth. Shaving the sides is typically associated with creating a more angular or tapered look, which can draw attention away from the width of the hairstyle. Using a shorter upper length may streamline the overall look, but it does not contribute to a wider illusion; rather, it can create a more trim appearance, thus potentially making the head look less wide. Therefore, focusing on volume at the sides is key to achieving that desired effect.