Lemongrass oil for distillation is kept for 15 to 20 hours after cutting to evaporate moisture content in order to get better yield in less time. It has abundant uses, ranging from cosmetics, to many medicinal benefits. Lemongrass oil can be extracted, and it's been used by healthcare providers to treat digestive problems and high blood pressure. It has many other potential health benefits, too. In fact, lemongrass essential oil is a popular tool in aromatherapy to help relieve stress, anxiety, and depression.