The present invention relates to essential oils. In particular, some implementations of the present invention relate to systems and methods for diluting and diffusing one or more essential oils from a portable dispenser. In some cases, the described systems include a solution comprising one or more essential oils, emulsifiers, and diluents, wherein the solution is disposed in a container that is capable of diffusing the solution. While the various ingredients can be present at any suitable concentration, in some instances, a ratio between the volume of the essential oil and the volume of the emulsifier is between about 2:1 and about 1:2. In some instances, a ratio of the volume of the essential oil to the volume of the diluent is between about 1:4 and about 1:8. Other implementations are also disclosed.