CNET’s expert staff reviews and rates dozens of new products and services each month, building on more than a quarter century of expertise.

Medically reviewed by Arno Kroner, DAOM Many people wonder how and why to use an essential oil diffuser. You'll want to fill ...

Plus, it doubles as an essential oil diffuser, which means you can get two ... or leave it on consistently. The tank is large enough to allow it to run for 16 hours at a time, and you can choose ...

but they don't work well in large rooms. Next, we have nebulizing diffusers, which are sometimes called atomizing diffusers. According to Greenopedia, these use an atomizer to get the oils into ...