The dermis, the middle layer of skin, varies in thickness depending on its location on the body. It can range from 0.5 mm to 1.5 mm in thickness. However, on average, the dermis is 1 to 4 mm thick, which is thicker than the epidermis, which is about as thin as a piece of paper.
For example, the dermis is thinnest on the eyelids, at 0.6 millimeters thick. In contrast, the dermis is thickest on the back and the palms of the hands.
The dermis contains small blood vessels (capillaries) and lymph channels that help to nourish and support the skin.
