The main function of eyebrows is to prevent water from flowing into the eyes. The arc of the eyebrows and the direction in which the eyebrows point can ensure that water droplets flow along the sides of the face and nose without flowing into the eyes.
Extended data:
Eyebrows can also stop dandruff and other tiny particles from falling into the eyes; It also provides a more sensitive feeling to feel things around the eyes, such as small insects.
Eyebrows also play an important auxiliary role in communication, which can strengthen the expression of emotions such as surprise or anger.
Eyebrows should be suitable for your face, don't blindly pursue fashion. First, you can take a pencil and lean it vertically against your nose. The tip of the pencil is your forehead. The pencil is slightly tilted and moved to the iris (the colored round part outside the pupil). This is the eyebrow peak (the highest point where the eyebrows are raised). Then let the pencil make a 45-degree angle with the bridge of the nose and find out the end of the eyebrow.
Baidu encyclopedia-eyebrow bone
Baidu encyclopedia-eyebrows