Why do people have eyebrows?
Eyebrows are pretty weird when you think about them! They’re two little bands of hair growing right above our eyeballs. The ancestors of modern people were a lot hairier, but over time, a lot of that hair was lost. Somehow our eyebrows remained. They aren’t just there for decoration. They play a very important role in keeping moisture out of our eyes. Just like an umbrella keeps our bodies dry from the rain, our hairy eyebrows keep our eyes dry from rain or sweat. Eyebrows, just like eyelashes and eyelids, actually work to protect your eyes.
We also use our exceptionally mobile eyebrows to communicate our emotions. The position of eyebrows emphasizes expressions on the human face thus giving others an accurate picture of the individual’s mood.
Smile comes in many forms, from expressions of merriment or contentment to leers, smirks and even anger. The position of the brow, emphasized by the eyebrows, is what gives us a visual cue to what an individual is really feeling.