
What Actually Causes Dark Circles Under Your Eyes
Dark circles under the eyes usually come from three overlapping causes: pigment, blood vessels, and shadow. What each looks like, what the evidence supports, and when to see a clinician.

Dark circles under the eyes usually come from three overlapping causes: pigment, blood vessels, and shadow. What each looks like, what the evidence supports, and when to see a clinician.
A plain-language explanation of the skin barrier — what it is, what breaks it, and how to help it recover.