What is considered the longest part of the brow?

The longest part of the brow is referred to as the tail. The tail of the brow extends from the arch down toward the outer corner of the eye and gives the shape and definition to the brow. This length typically allows for a gradual tapering that is aesthetically pleasing and helps frame the face. In the context of brow shaping and aesthetics, understanding the proportions and lengths associated with the brow can dramatically influence a person's overall appearance.

The body refers to the central portion of the brow, and the head is associated with the beginning or front of the brow near the nose. The arch is the highest point of the brow but does not extend as far out as the tail. While all these components contribute to the overall shape of the brow, it is the tail that typically measures the longest and plays a critical role in brow design and symmetry.