Why Do I Get Dark Circles Under My Eyes?

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Look alive, you! Today we’re diving into the science behind dark circles under your eyes, and all the things that might cause them – tiredness included.

Hosted by: Hank Green
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Dooblydoo thanks go to the following Patreon supporters -- we couldn't make SciShow without them! Shout out to Kevin Bealer, Justin Lentz, Mark Terrio-Cameron, Patrick Merrithew, Accalia Elementia, Fatima Iqbal, Benny, Kyle Anderson, Mike Frayn, Tim Curwick, Will and Sonja Marple, Philippe von Bergen, Chris Peters, Kathy Philip, Patrick D. Ashmore, Thomas J., charles george, and Bader AlGhamdi.
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I have dark bags underneath my skin but i'm proud of them because they define who I which is a tired, mean teenager.

lemongrenade
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I don't GET dark circles under my eyes I HAVE them. Thanks genetics.

Adventurous-Emma
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So I'll still stay ugly due to the dark circles under my eyes... Thanks genetics!

MyW
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If you have chronic migraines you'll also have dark circles. This is because during a migraine, all your blood vessels constrict then open up completely, causing more blood to go to your head. I look like death.

alyssamsipe
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I found that when i run (I run outdoors so the fresh air and sun also helps), it makes a difference with my undereye darkness. It's immediate before and after a run, and even less dark the next day. Get that blood circulation going! :)

RelaxWithReena
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When my mom see me having dark circles around my eyes, she said I've been playing too much games...

hoksolindachhun
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"and sometimes they produce extra melanin below their eyes, a condition called periorbital hyperpigmentation." Peri = 'around', orbital = 'of or relating to the eyes', hyper = 'lots'. I just love how pretty much all the medical terms for various conditions are just laymen's descriptions translated into the medical patois of Latin and Greek. You guys should do a video on that...

TheBookDoctor
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The irony of watching this late at night.

armadillito
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How does a pen work? and what is that yellowish gel at the end of the ink inside the cartridge?

silvestregarcia
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THank you very much for making this video, _SciShow_! Really interesting, actually. I will try to look more alive in the future.

robert_wigh
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So as an airline pilot who gets direct sun exposure at high altitude, can't get full nights sleep due to changes in circadian rhythm, and has trouble getting a proper diet due to being exposed to mostly airport and airplane food, I'm screwed....

codzomz
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I've had dark circles since I was a teen thanks to my very fair, almost translucent skin and allergies. I once had a boss who told me I looked tired every time she saw me without makeup. Talk about a confidence killer...

danidarkheart
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Hmmm... Now wait a second. I wonder if the response to the stress hormone cortisol and the dilation of blood vessels under the eyes that leads to dark circles is supposed to act like the dark paint athletes put under their eyes for eyesight. Like, for example, stress causes us to sort of self apply that advantage so we can see/defend ourselves when we feel some sort of stressor.

JackedLobster
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Yea, but why there are dark rings around Uranus?

sodalitia
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_"As we get older, we lose even more fat underneath our skin"_ You must be 9999 years old, Hank; you lanky-lank-Hank!

DanielRenardAnimation
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The bags under my eyes are so big I have to check them separately when I get on an airplane - thanks Blizzard.

ManDryver
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Guess I'm fked for life .have some type of allergy hitting me throughout the year...

kieran
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Thank God I finally found someone who explained the science behind it instead of telling me just the causes and "how to reduce them". I don't need to reduce them i just was sitting here thinking about it😂

tsivilsඞ
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Can you do one on cerebral aneurysms? I had one rupture at 19 and would love to learn more!

phantasm
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What happened to that woman who was supposed to be a presenter? I saw her in one video and that was it.

brothyr