Skin tone is a good indicator of overall health. Against the outer world, it serves as the first line of defence. So that your skin can look after you, learn to take good care of it. The largest organ in our body is the skin. It serves as a barrier between our body and the outside world in addition to giving our body structure. It offers defence against pressure and mechanical impacts, a wide range of pathogens, temperature changes, damaging radiation, and chemicals.