The skin in the eye area is:
Thinner: The eyelids and under-eye area have much thinner skin than the rest of your face. This makes it very sensitive, and easy to irritate. Tiny blood vessels can be seen through the delicate under eye skin and as a result dark circles appear.
Drier: There are no oil glands in the eye area. Without oil to moisturise it, the skin around your eyes is prone to dryness.
The first to show signs of aging: Constant movement in the eye area - blinking, facial expressions and squinting – along with the dryness mean that wrinkles form here earlier than the rest of your face.
More sensitive: Because the skin is thinner here and more delicate it tends to be more reactive, and irritates easily.
Gets puffy: The thinner skin means that fluid retention is more prominent showing up as puffiness and under-eye bags.