Editor's note: The American Society for the Prevention of Cruelty to Animals (ASPCA) notes some possible risks when using essential oils in proximity to pets. Before buying an oil diffuser, be sure it ...

Filling your diffuser with filtered or bottled water prevents damage from hard water. Keeping the diffuser away from electronics helps avoid mist damage. Essential oils labeled "for aromatherapy use" ...

The most common way to use essential oils is to inhale them, both for their scent and therapeutic properties. However, they can also be used diluted with a carrier oil and applied to the skin.

Many people wonder how and why to use an essential oil diffuser. You'll want to fill it with filtered or bottled water to a diffuser, then add a few drops of essential oil like lavender, peppermint, ...