Diffuser with 1/4 ounce Essential Oil . To use: add a little water to dish in diffuser. Add 18 to 20 drops of Essential Oil to water in diffuser. Light tea light underneath dish. As the oils heat the scent will be released and you will enjoy the effects of the oil. Very nice to use in evening to relax, or for company to lift the mood, or for studying to help with concentration, depending on the oil blend that you choose. Includes dropper. Your choice of Essential Oil Blend or single Essential Oil.