Fruit that is imported is often treated with products against insects and fungi. Eating an orange without coming into contact with insecticides and pesticides on the skin is practically impossible. By eating oranges we can even be burdened with heavy metals on the skin.
Therefore, it is wise to first wash an orange with some soap and then rinse it thoroughly before peeling it. Insecticides are often fat-soluble products that can be easily removed in this way.