Its main function is as a defence against bacteria and fungi. Consisting of an emulsion of water and fat, it keeps the skin surface supple.
The Physiology of the Skin
The skin, the largest organ of the human body, has a surface area between 1.5 and 2.0 square metres. It accounts for 16 % of total body weight. Considered one of the most important organs of the body, the skin protects from harmful substances, insulates and regulates temperatures.