Google+

BBC Future

Head Squeeze

Why do you have eyebrows?

You’ll think twice about plucking your eyebrows when you discover their important role, says Greg Foot.

They are one of the most expressive parts of our bodies. With your eyebrows, you can communicate your feelings to other people whether you’re quizzical or angry. But is that their only purpose?

Over millennia, we have lost lots of body hair. So it’s curious that hair still remains on our brows. As the Head Squeeze team explains, the main job of the eyebrows is as a special form of protection for the eyes.

In fact, their job so important that some researchers believe if we didn’t have them, we’d have evolved some other facial feature to do the same task – so if it wasn’t for eyebrows, we’d look a lot weirder.

For more videos subscribe to the Head Squeeze channel on YouTube.

If you would like to comment on this video or anything else you have seen on Future, head over to our Facebook page or message us on Twitter.

BBC © 2014 The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.