Can be placed in the office, bedroom, living room, car, beauty salon, yoga studio, a touch of plant aroma. It has the effect of refreshing and helping you to have a deep sleep. Breathing the scent of your favorite essential oil in a quiet sleep environment, you will fall into a deep sleep. It has a groove design, easier to store and absorb essential oils, making it a lasting fragrance. Easy to use, easy to carry - drip 3-4 drops of essential oil, finish waiting for penetration, you can smell the essence of oil at any time.