The function of essential oil can be said to be all-round, from head to toe, from outside to inside. The key depends on the use. According to the purpose, it is decided to use single or composite. Be sure to use professional guidance when taking orally, otherwise don't try it easily. Like drugs, essential oils have many taboos. For example, a single essential oil can not be used alone without dilution (lavender essential oil and tea tree essential oil can be used directly at present), and the dosage should be adjusted according to the proportion. Usually a single drop of essential oil needs 30-50 drops of base oil. Female physiological period and pregnancy can not be used. What exactly do you want to know? Let's discuss it again.