... vibration,as this perfume was not produced by heat,so you can enjoy the natural fragrant ... water-soluble matters such as water,incense essential oil,common toilet water,perfume,water-solubility tranditional ... .Decorating :Spray Aroma Via adding frangrance,essential oil ect.Ease indoor atmosphere. The Step of usage1 ... the main body,fill in water and essential oil into the water tank and install the cap ...