The belly button rubbing the wind oil essence can not treat insomnia. The main component of essential oil is menthol, which has the effect of cooling, relieving pain, repelling wind and relieving itching, and can be used to treat mosquito bites and headaches caused by cold and flu, dizziness and motion sickness. Windex is irritating, the navel part of the delicate flesh, it is not recommended to apply in the navel. The use of essential oil should be noted for pregnant women, children under three years of age and allergy, pay close attention to the occurrence of rashes, itching and other allergic reactions, and should be far away from the location of the children can touch, to prevent accidental entry into the eyes. In addition, the cap of the bottle should be screwed tightly to prevent the active ingredients, such as menthol, from evaporating and weakening the efficacy of the medicine. If you have insomnia symptoms, it is recommended to consult a doctor in time, do not self-medication.