Ajwain oil is obtained for Ajwain seeds, which grow on an herbaceous plant that bears grayish-brown fruits, grown in Iran, Egypt, Afghanistan and India. This oil is used as flavoring agent, preservative for different applications like perfumery. Ajwain oil is extracted by means of Steam Distillation. USES : Ajwain oil has many health benefits. It can neutralize free radicals, reduce inflammation, improve breathing, kill microbes like bacteria and fungi, and repel and kill insects. Ajwain is the most potent repellents. Ajwain is persistent enough to prevent the mosquito eggs fromhatching.It is great for controlling the mosquito population. Add a few drops of ajwain essential oil to your diffuser to clear up your sinuses, and ease your coughs.