Our body has its own defense system to protect us from unwanted harm. There are 2 types: external defense and internal defense.
External defenses is not specifically directed against any one pathogen but instead provides a shield against harmful external factors such as UV rays, environmental chemicals and all infections.
The human skin falls under external defenses, acting as the first line of defense for our body.
Did you know that your skin is largest organ of the body? It helps to:
protect us from invading bacteria
regulate body temperature
gives us a sense of touch, heat, cold, pressure