Pure and natural: Queaseease contains 100% pure and natural therapeutic grade essential oils formulated to relieve the queasiness associated with motion sickness as well as postoperative recovery, chemotherapy and morning sickness. (Spearmint, peppermint, ginger and lavender) how it works: Works by simply breathing the aroma: The molecules from the oils travel the olfactory track to the central nervous system where they interrupt the nausea cycle. Inhalation can be repeated as often as necessary.