A good way of using essential oils is to vaporise them. This is commonly done by using an oil burner, but there are other methods. To use an oil burner fill the bowl at the top of the burner with water and place a few drops of essential oils on the water, then place a lighted tea light underneath the bowl. The water and essential oils evaporate as steam, letting the aroma of the essential oils fill the room. Never leave the lighted candle unattended and do not let all of the water evaporate from the bowl, or it may crack.
Other ways of vaporising essential oils include using electrical apparatus such as a Hot Bowl, or an 'Aromastream', a light bulb ring or a simple saucer of water. A Hot Bowl is heated by an electrical element, like an oil burner the essential oil is placed on top of water in the bowl. The 'Aromastream' does not use heat or water, instead the oils are placed on a filter and a fan used to disperse the essential oil into the air. A light bulb ring is used by putting a few drops on the ring and then placing upon a light bulb. The ring should be placed on the bulb before it is lit so that both the ring and bulb heat up together.
Alternatively a few drops of the essential oil on a shallow saucer of water, and place the saucer on a radiator or a sunny windowsill, so that the water will gently heat and the essential oils evaporate.
When using essential oils, either an individual oil, or a mix (blend) of oils can be used.