Citronella oil is an essential oil derived from the leaves and stems of various species of Cymbopogon grasses, which are native to tropical Asia. It has a fresh, citrusy aroma with a slightly sweet undertone. The oil is known for its therapeutic properties, including its ability to repel insects and promote relaxation. The active compounds found in citronella oil, such as citronellal and geraniol, are believed to have a range of health benefits, including reducing inflammation, alleviating pain, and supporting respiratory health. Citronella oil is commonly used in natural insect repellents and aromatherapy products.