Humans

Why Does Hair Come In Different Colors, And Why Do We Go Gray?

Excited for the August 21 eclipse? Visit our Eclipse 2017 page to explore the science, history, and myths of the event. The Curiosity team will be viewing the eclipse alongside NASA in Carbondale, Illinois. Follow us on Facebook for live videos, trivia, and interviews on the big day.

You may have heard that scientists are finally beginning to understand the genetic reasons why hair goes gray later in life. But what's the actual mechanism for hair's changing color? It comes down to the melanin-producing glands in the hair follicle, and what happens when those glands start to run low. But there's a lot that can affect melanin production besides age—watch the video below to learn more.

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Why Does Your Hair Turn Gray?

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