A fragrant plant oil that, depending on the species, can contain dozens of volatile compounds that have a known or potential risk to sensitize skin; however, several of these fragrant compounds also have health benefits, including antioxidant benefit, when ginger oil is consumed via food as part of your diet. Therefore, ginger oil isn’t ideal for skin but can absolutely have benefit if you routinely include small amounts of fresh ginger in your diet.
References for this information:
Natural Product Research, October 2012, pages 1,759-1,764
Asia Pacific Journal of Tropical Biomedicine, December 2012, pages S1347-S1350
African Journal of Biotechnology, January 2012, pages 777-786
Fragrance and Flavor Journal, June 1988, pages 85-90