Dark circles under the eyes may look purple or blue to dark brown or black, depending on skin color.

• Genetics often play a role in discoloration.

• Some people, especially those with thin, pale skin, have superficial blood vessels, which results in a reddish-purple hue showing through.

• Allergies are also a big culprit, and frequent eye rubbing can cause thickening and darkening in the area.

• Aging can also cause volume depletion under the eyes, resulting in hollowed-out shadows.

• Lack of sleep and overwork.

• Dehydration

Treatment