1, unilateral pure essential oils is better, it will penetrate the skin in 4-8 seconds, enter the blood and lymphatic circulation in 4-8 minutes, and take the toxin out of the body in 4- 12 hours. Pure unilateral essential oil can be directly used on the skin except lavender and tea tree, and other essential oils can not directly contact the skin.

2. Compound pure essential oils is made of several kinds of single essential oils, which is more effective than single essential oils and needs to be used in combination with base oils.

3, compound essential oil, does not belong to pure plant essential oil, does not have the effect achieved by pure plant essential oil, and has a taste because of the application of essence.

4, simple identification, smell the essential oil, if the taste rushes up and rushes to the head, it is neither pure plant essential oil.

If the taste goes down the throat, it is pure plant essential oil.

5. Pure plant essential oil is volatile, so cover it tightly to avoid light. Slightly soluble in water, alcohol and base oil.