As well as repelling insects such as mosquitoes, citronella — a close relative of lemongrass — has a wealth of uses and properties to make the most of, both in the kitchen and as an oil.
You will almost certainly have encountered its scent — fresh and invigorating, reminiscent of citrus fruits — in products that repel insects, or in some deodorant or bar of soap. The essential oil, which is not particularly expensive, is obtained by distilling the whole plant of Cymbopogon nardus or Cymbopogon winteratus, grown mainly on the island of Java and in Central America. Citronella is a relative of lemongrass, another type of Cymbopogon.
Citronella candles work excellently at keeping mosquitoes away. Alternatively, you can use an aroma lamp or a fragrance diffuser, which you will find in herbalist shops and homeware and interior accessory stores. Simply pour in a little water and a few drops of citronella essential oil or mint oil, and heat the water with a candle or a small bulb placed in the lower part of the "lamp". Alternatively, use a spray diffuser.
When inhaled, it can accelerate the heartbeat. Its use should therefore be avoided in the presence of people with heart conditions. It can also irritate and sensitise the skin; in this case, use it only when well diluted.