Your skin is made up of three main layers: the epidermis, the dermis and the hypodermis. The thin but strong epidermis forms the top layer of the skin.
It acts as the body's first line of defense, protecting against external aggressors such as UV rays, infection and pollution, whilst preventing loss of water and nutrients from our bodies. The epidermis varies in thickness depending on where it is on the body. The soles of your feet and the palms of your hands have the thickest epidermis, and the epidermis is thinnest on the eyelids.
