The skin is the body’s largest organ. It protects the body from harmful microorganisms, prevents too much water loss, and regulates the body’s temperature. Since the skin is constantly exposed to the elements, it can become vulnerable to certain conditions. Skin allergies are a prevalent condition that occurs when the immune system reacts to a harmless substance that comes in contact with the skin. In this article, we describe the different types of skin allergies and how to prevent and treat them.