Citronella oil is made by steam distillation of certain species of grasses in the Cymbopogon grouping of plants. Ceylon or Lenabatu citronella oil is produced from Cymbopogon nardus, and Java or Maha Pengiri citronella oil is produced from Cymbopogon winterianus. Lemongrass (Cymbopogon citratus) also belongs to this grouping of plants, but it is not used to make citronella oil.

Citronella oil is used to expel worms or other parasites from the intestines. It is also used to control muscle spasms, increase appetite, and increase urine production (as a diuretic) to relieve fluid retention.

Some people apply citronella oil directly to the skin to keep mosquitoes and other insects away.

In foods and beverages, citronella oil is used as a flavoring.

In manufacturing, citronella oil is used as a fragrance in cosmetics and soaps.

Benefits of Citronella Oil for Health:

1) Insect repellent:
Citronella oil repels insects such as mosquitoes, black flies, fleas and ticks, therefore, preventing its bites. It is used on humans and their clothing – in the form of an oil, liquid and patch. Citronella oil is a natural, non-toxic alternative to chemical insect repellents such as DEET , therefore, is usually the preferred choice. Also available are solid products such as citronella oil insect repelling candles and cartridges. Citronella oil is also used in a tablet or pellet form in recreational or outdoor household areas and around trees and shrubs. In addition, there are animal collars and tags containing citronella oil for pets and other domestic animals to repel fleas. A combination of the citronella oil and cedarwood virginian oil also helps to repel mosquitoes.

2) Aromatherapy:
Citronella oil, an essential oil, possesses activating and warming qualities both physically and mentally.The aroma is said to be like its relatives lemongrass and palmarosa. However, citronella oil is overlooked in aromatherapy because of its association with insect repellency. When citronella oil is diluted properly in a base oil and is applied to skin, it produces a mild sensation of warmth – which relieves painful muscles and joints. Mentally, the aroma of citronella oil may help with nervous fatigue due to its clarifying properties. It can also ease pressure of migraines and headaches. Citronella oil blends well with cedarwood, orange, geranium, lemon and bergamot - however, you should only use essential oils under those specialised in the field. It is safer to consult a qualified aromatherapist if ever in doubt.