There are four main types of oil diffusers on the market right now. You can choose your diffuser based on the intensity of the effect desired, and of course, the limitations of your space.

Nebulizing Diffusers: These diffusers work by using pressurized air to diffuse a mist of oil. A vacuum pulls oil to the surface of a distribution tube resulting in a burst of aroma into the air. Nebulizing diffusers don’t require water or heat, which makes them a low-maintenance choice. These are plastic-free for the eco-conscious user.

Ultrasonic or Humidifying Diffusers: Ultrasonic vibrations break up oil molecules to create a fine mist. You will need to dilute the essential oil with water for the diffuser’s electronic frequencies to release the oil into a mist. Ultrasonic diffusers work like cold humidifiers, which makes them a great choice if you want to add moisture to the air, especially during cold season. The plastic ultrasonic parts require cleaning as oils can be corrosive to plastic.

Evaporative Diffusers: In this type of diffuser, a small fan helps turn oil into gas, making oil evaporate into the air. However, as the oil evaporates, it loses some of its potency. So, this is a good choice for people who want a quick, occasional aromatic sensation.  

Heat or Electric Diffusers: Instead of using a fan to turn oil to gas, a heat diffuser uses heat, most commonly, electric. Heating oil may change its chemical properties making the oil less or more intense depending on its properties. Because there’s no fan involved, these diffusers are silent. Different types of heat diffusers include candle diffusers, electric heat diffusers, and lamp ring diffusers.

There are also some tricked-out oil diffusers on the market with cool features like ambient lighting and sound features. Oil diffusers with automatic switch-offs or timers are a good choice if you plan to use your diffuser for extended periods or to fall asleep.