Corn oil is a type of oil that is made from corn, also known as maize. It is commonly used as a cooking oil, as well as in a variety of food products, such as margarine and mayonnaise. Corn oil is high in monounsaturated and polyunsaturated fats, which are considered to be healthy fats. It is also a good source of vitamin E and omega-3 fatty acids. Corn oil has a relatively high smoke point, making it suitable for high-heat cooking methods such as frying and sauting. It is also relatively inexpensive and widely available. Some people may be allergic to corn oil, so it is always a good idea to check with a doctor or allergist before using it