Protection: It acts as a barrier, protecting our body from environmental impact and microorganisms.
Regulation: It maintains body temperature through sweat and hair—one of the essentials for a healthy body.
Sensation: The network of nerve cells helps us feel through touch, pain, heat, and cold.
Excretion and Secretion: Sweat is not just water. It also contains urea and creatinin which act like toxin excretion. Secretions like sebum keeps the skin oil balanced and keep the natural microorganisms of the skin in a healthy state.