Why do black circles form under our eyes when we get sleepless?
In: Biology
When you don’t get enough restorative sleep at night, your blood vessels dilate.
This causes an increase in blood flow, and since the skin under your eyes is thinner, the dark tint caused by the increased volume of blood is more noticeable here.
In other words, **sleep deprivation causes dark circles.**
Also has to do with genetics. I’m 100% Italian and I’ve had dark circles under my eyes since as long as I can remember. And so do most of my family members
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