What is the function of a skin tissue?

A tissue is a group of cells that organize to perform a common task. Skin tissues perform these major functions: protection, regulation and sensation.

By protection it means that it acts as a barrier to external agencies that might enter our body. The skin provides a physical protection to our internal body organs. Regulation means that the skin regulates the body temperature by sweat and hair. The skin tissues help to detect and react accordingly to the external environmental factors like pressure and temperature and this is how they make skin a sense organ.