An eyebrow is a strip of hair located above the eye, serving both aesthetic and functional purposes. It helps to enhance facial expressions and plays a role in non-verbal communication. Eyebrows also help to keep moisture, such as sweat and rain, from entering the eyes, improving vision and comfort. The shape and thickness of eyebrows can vary widely among individuals and can be influenced by genetics, age, and grooming practices. Many people choose to shape or style their eyebrows using various methods, including tweezing, waxing, or threading, to achieve a desired look that complements their facial features.