The delicate skin under the eyes is often the first place to show signs of fatigue and aging. Dark circles and hollowness can be caused by:

Thinning skin that makes underlying blood vessels more visible.

Loss of collagen and volume, creating shadows and a tired appearance.

Poor circulation, stress, or lack of sleep that darken the under-eye area.

Genetics and aging, which naturally make this area more fragile over time.

These factors combine to make the eyes look dull, sunken, or constantly tired—even when you’re well rested.