Lemongrass essential oil is extracted from the leaves of the tall grassy plant that thrives in tropical regions of China, Indonesia, and India. The thin yellow oil has a strong, lemony, earthy aroma and is a popular ingredient in Asian cooking. Lemongrass oil’s refreshing scent has a calming effect on the mind to help reduce anxiety, and also is known for its ability to repel insects. It may also be beneficial to those suffering from hair loss or other scalp conditions, as it can help strengthen hair follicles and aid in regrowth.