Other processed foods that use cottonseed oil as an ingredient include potato chips and French fries, baked goods, cereals, mayonnaise, stir-friend and oriental dishes, and spicy foods. 6, 7. Cottonseed oil is also used in personal care products such as soap and cosmetics. Soap produced with cottonseed oil was found to be adapted to washing wool. The oil from cottonseed is also added to laundry detergents. 8 Other products where cottonseed oil is used range from rubber to insecticides and explosives. 9. Unrefined cottonseed oil was once used in medicine to treat colic in babies.