It's Okay to Be Smart

Much A-Do About Hair

Season 4 Episode 31 | 4m 18s | Video has closed captioning.

All mammals have hair at some point in their lives, but none of them wear it quite like humans. Why does our hair grow where it does, and not grow where it doesn’t? How does our hair get its color? And why does it go gray and often fall out when we get older and go bald? Learn all about the science of human hair in this week’s video!

Aired: 05/02/17

Rating: NR

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Problems Playing Video? | Closed Captioning