Which one of the following substances does not cause eczema?
Oil
Eczema is the name for a group of conditions that cause the skin to become red, itchy, inflamed, and sometimes blistering and weeping. Symptoms vary according to the age of the person with eczema, but they often include scaly, itchy patches of skin. Eczema can also be triggered by environmental factors like smoke and pollen. Substances like cosmetics, soap, washing powder and cheap dyes can cause eczema.