Eyebrows are prominent patches or arches of hair located above the eyes on the forehead. They serve both functional and aesthetic purposes. Functionally, eyebrows help to protect the eyes by diverting moisture, such as sweat or rain, away from the eye socket. Their arch shape assists in guiding these elements toward the sides of the face, helping to maintain clear vision and comfort.

Aesthetically, eyebrows play a crucial role in human facial expression and communication. They help convey emotions such as surprise, anger, or confusion, enhancing non-verbal communication. Eyebrow shape, thickness, and grooming can also significantly influence the overall appearance of the face, contributing to perceptions of symmetry, age, and attractiveness.

Eyebrows vary widely among individuals in terms of density, shape, and color, often influenced by genetics, age, and cultural grooming practices. In many cultures, eyebrow grooming is a common beauty ritual, including shaping, plucking, threading, waxing, tinting, or makeup application to enhance their appearance. Over time, the role of eyebrows has evolved from purely functional to being an important element of personal style and identity.