Ceramic Diffuser Rings for use on light bulbs. Simply put a few drops of your favorite fragrance oil on the ceramic diffuser ring and the light bulb will slowly warm the fragrance oil and diffuse it into the air!
These will not work on compact fluorescent (CFL) or LED light bulbs. You have to use the old traditional incandescent bulbs. The new CFL & LED light bulbs will not warm the ceramic rings up enough to warm the fragrance oil.