As long as it's not used in very strong concentrations, ginger oil is generally safe, as it is non-toxic and non-irritating. If you have sensitive skin, please do a skin patch test before using ginger oil (or any essential oil, for that matter) to see if you have any allergic reactions to it.
You should also consider diluting ginger oil in other carrier oils. Some of the best choices are citrusy and spicy oils like neroli, frankincense, bergamot, ylang-ylang, rose, and sandalwood.
Ginger oil may be phototoxic, so avoid applying it on skin areas that will be exposed to the sun within 24 hours after application.16 I also advise pregnant women and nursing moms to use ginger oil with caution, even though it has been deemed useful for morning sickness. Consult your healthcare provider before use. Avoid administering this oil to very young children as
well.
Side effects of ginger oil: If you have any sensitivity to ginger root, do not use ginger oil at all. Some potential side effects of ginger oil are heartburn, sores in mouth, nausea, and skin rashes (when applied topically).17 If you are taking any type of medication, consult your physician first if it is safe to use or ingest ginger oil.