Brauen

Brauen, or eyebrows, are two bands of coarse hair located above the eye sockets. In humans and many primates they help shield the eyes from moisture and debris and play a key role in nonverbal communication by shaping facial expressions.

Anatomy and variation: Each eyebrow sits along the supraorbital ridge and follows a curved arc above the eye. Hair density, color, and shape vary widely and are influenced by genetics, age, and sex. Minor asymmetry between the two sides is common.

Functions: Beyond protection from sweat and light, eyebrows assist in signaling emotions, such as surprise or concern, by changing the silhouette of the upper face. They also help with facial recognition by providing a stable frame for the eyes.

Development and care: Eyebrow growth begins in early childhood and proceeds in cycles. Hormonal changes, aging, and health conditions may reduce density. People groom eyebrows through plucking, waxing, threading, or cosmetic procedures like microblading.

Cultural and medical notes: Thick, well-defined brows have varied cultural value across history and regions. Medical conditions such as alopecia areata or hypothyroidism can cause eyebrow loss. Treatments range from medical management to cosmetic procedures and hair restoration.