The health benefits of vetiver essential oil can be attributed to its properties as an anti-inflammatory, antiseptic, aphrodisiac, cicatrizant, nervine, sedative, tonic, and vulnerary substance.
Vetiver is famous all over the Indian Subcontinent. People may not understand it since many of them are unfamiliar with this name. Instead, it is popularly known as “Khus” or “Khus-Khus” and it is extensively used in perfumes, food, and beverage industries.
The botanical name of vetiver is Vetiveria zizanoides or Andropogon muricatus. This grass has a very pleasant, mild, earthy, and musky smell which has a cooling effect on the body and the mind. The dried grass and its roots are used to thatch the side panels of the water-based room and window coolers since it cools and adds fragrance to the moist air. 
It is also used to thatch roofs of earthen houses and mattresses. It is also used as curtains on the doors and windows, which, apart from cooling and scenting the rooms, keeps insects away. That is why its demand rises excessively during the summer, particularly in humid regions like India and neighboring countries.
The essential oil of vetiver is obtained through steam distillation of its roots and its main components are alpha vetivone, benzoic acid, beta vetivone, furfurol, vetiverol, vetivene, and vetivenyl vetivenate. Its essential oil is also used extensively in the perfume industries, including perfumes for the body, room fresheners, and coolers, as well as cosmetics, soaps, oils and as a flavoring agent in beverages, sorbets, and foodstuffs.
Health Benefits of Vetiver Essential Oil
This essential oil is very popular in aromatherapy and has many medicinal properties, which are described in greater detail below.
The soothing and cooling effects of vetiver essential oil calm and pacify all sorts of inflammation. It is particularly good at providing relief from inflammation in both the circulatory and nervous system. It is also found to be an appropriate treatment for inflammation caused by sunstroke, dehydration, and loo, which is the name given to very hot and dry winds prevalent during summer in the dry South Asian regions.
Cicatrizant agents are substances that speed up the eradication or disappearance of scars and other marks on the skin. It also promotes the growth of new tissues in the affected places which replace the dead and discolored tissues and helps achieve a uniform look. This is also useful for post-delivery stretch marks for pregnant women, fat cracks, after spots left by pox, and burns.
Prevents Bacterial Infections
In tropical countries like India and its neighbors, microbes and bacteria grow very fast due to the favorable hot and humid climates found in these regions. It becomes obvious that your wounds are most likely to get sepsis in these places since there are plenty of bacteria located in. One such remedy is vetiver and the essential oil extracted from it, according to a report published in the Journal of Pharmaceutical Studies. This oil efficiently stops the growth of Staphylococcus aureus, the bacteria responsible for causing sepsis and eliminates them. It is totally safe for this oil to be applied externally on the wounds or taken orally in order to protect wounds as well as internal organs from sepsis. 
Mixed in sorbets and beverages as a flavoring agent, vetiver essential oil has an aphrodisiac effect. It also enhances the libido and arouses feelings of sexual desire. Since sex has more to do with the psychology of the brain than the physiology, it is a remedy for most sexual disorders like frigidity, lack of libido, and impotence.
Acts as a Tonic
The effect of a tonic on the body is quite similar to that of overhauling and servicing on vehicles. A tonic tones up every system of the body, namely the digestive, respiratory, circulatory, excretory, immune, endocrine, and nervous systems. Therefore, in a nutshell, vetiver essential oil keeps the metabolic system in order, rejuvenates the body, gives strength and boosts immune function.
Prevents Nervous Disorders
A tonic for the nerves is called a nervine, like the essential oil of vetiver. It takes care of the nerves and maintains their good health. It also heals the damage done to the nerves by shock, fear, and stress. Furthermore, it helps get rid of nervous disorders, afflictions, epileptic and hysteric attacks, nervous and neurotic disorders such as Parkinson’s Disease, and lack of control over limbs and spasms.
The essential oil of vetiver is a well-known sedative. It sedates nervous irritations, afflictions, convulsions and emotional outbursts such as anger, anxiety, epileptic and hysteric attacks, restlessness, and nervousness. It even benefits patients that suffer from insomnia.  
This property of vetiver essential oil helps heal wounds by promoting the growth of new tissues in wounded places and also by keeping it safe from infections by inhibiting the growth of microbes. Finally, it also promotes the accumulation of leucocytes and platelets at that location.
Vetiver essential oil also benefits patients with rheumatism, arthritis, gout, muscular aches, and also helps to reduce the dryness and cracking of the skin. It also is a natural insect repellant. 
Word of Caution: This essential oil is completely safe, being a non-irritant, non-sensitizing, and non-toxic substance.
Blending: The essential oils of benzoin, grapefruit, jasmine, lavender, and ylang-ylang blend well with the essential oil of vetiver.