Citronella oil is an essential oil known for its citrusy scent which is mainly used as an insect repellent, especially mosquitoes. Citronella oil can be both uplifting and relaxing for the body and mind you can diffuse citronella oil in an essential diffuser, or apply on skin with carrier oil. It slows or prevents the growth or spread of harmful airborne bacteria. Due to its antioxidant properties, citronella oil can reduce muscle spasms, ease headaches and boost energy. Citronella oil can also be used to help clean your kitchen, bathroom or household surfaces. As a hair treatment, citronella oil can boost cleansing while adding shine.