10 of the Best Essential Oils

6. Ginger Oil

For decades, researchers have suspected that ginger provides a variety of health benefits. A few studies confirm its anti-inflammatory effects in rats, and its ability to lower arthritis symptoms. While it did not reduce acute joint swelling, it inhibited chronic swelling.

Ginger oil may also relieve digestive upset, migraine discomfort, and nausea, although most of these claims are anecdotal. A 2015 study found that ginger oil has high antioxidant activity and can help ease skin roughness.