What is the protective function of the skin?

The skin is an organ that has several important functions at once. One of the main functions is protective. The skin is a barrier between organisms and the environment. There we are protected from various viruses, bacteria and other living organisms. Very often, when injured without treating the wound, infections begin. Without skin, infections would always occur, since it is impossible to protect the body simply by the presence of antibodies without a physical barrier. But the metabolism still occurs through the skin. Water and various substances are released through the skin.