An essential oil reed diffuser is a simple device that allows one to release the essence of Lilac into a room. The reed diffuser is one of simplest setups for essential oils and has the advantage of not requiring power while providing long periods of release. A two ounce bottle is filled with 1.5 ounces of sweet almond oil and 0.5 ounces of essential oil. Red dye is added in this instance to show the capillary action of the oil up the reeds. Once the oil migrates up the reed, the fragrance chemicals in the oil diffuse into the environment. The oil diffuser last for days and weeks.