This zone has the finest skin on the entire face, with hardly
any muscle, not much collagen and elastin, and few sebaceous glands.
The eye contour is subject to constant movements that leave
their traces on the skin.
Plus, this zone is highly sensitive because all these
characteristics mean it isn’t capable of maintaining transepidermal water,
unlike the rest of the face. As a result, dehydration occurs more easily around
the eye contour.