Features: With 100% pure and natural plant extracts, the essential oil is safe and non-toxic. Can relieve stress, making you pleasant, and also can refresh air. Calming and soothing, also good for aiding better sleep and relaxation. Various kinds of fragrance for your choice, meeting your different needs. Dropper design, easy to use. And it is water-soluble, which can drop into the water and mix to use. Suitable for air humidifier, helping remove odors and keep air fresh, easing the nerve and relieving fatigue. Can be widely use at home, or in the car/office/restaurant, etc.