When you are talking about commonly used additives, the name of Cajeput oil cannot be ignored. This product has a number of positive factors for the consumers. For instance, it is used to treat acne, bruises and other skin problems. It is also known as tree oil and is mainly used for medical treatment purposes. It is also used in the preparation of insecticides and pesticides. If it is being used for medical purposes, it should not be used without instructions.