**6. Conclusions**

Essential oils are natural substances extracted from several parts of plants by various methods. They are safe as food preservatives because they do not have side effects on human health. In addition, its bactericidal characteristics encourage utilizing them as medications and in beauty care products.

**37**

**Author details**

Lubna Abdul Muttalib Al-Shalah1

Babylon, Babylon Province, Iraq

provided the original work is properly cited.

1 University of Babylon, Babylon Province, Iraq

\*Address all correspondence to: nadakhzal@yahoo.com

and Israa Harjan Mohsen2

, Nada Khazal Kadhim Hindi2

2 Department of Basic and Medical Science, College of Nursing, University of

© 2020 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium,

\*

*Essential Oils*

*DOI: http://dx.doi.org/10.5772/intechopen.92216*

*Essential Oils - Bioactive Compounds, New Perspectives and Applications*

The chemical structure of the essential oils is different from one the other and this feature influences their utilization ways and leads to variation in their absorption and the ways of their uses by the body. So, essential oils are generally used in

In this way, the oils are inhaled via diluted and then using the diffuser which is act on lightening the oil and make it easy to broad into the air so, this help in treated the external respiratory passage, improve the emotional and mental state and decrease of anxiety, where some researches indicated that the inhalation of some essential oils such as lavender act as quite sedatives where it incorporated with cells of the brain via the receptors of smell or have effects on some hormones and enzymes and do its works as a relaxer, Uplifting Mood, Calm Mood and

This method includes applying the essential oil on the skin where it is absorbed easily. Some oils must be diluted before using while others need a carrier oils. The topical ways used in the support of stress when it used in massage and also it is used in the beauty products such as lotions and wax, but it may cause allergies to some peoples who suffering from skin sensitive so must be careful when using it and applied in small area of the skin after taking advice of the physician [32].

Some essential oils have medication features when ingested orally, that is, it act internally where it transported via the stream of blood to various parts of the body, they may acts as an anti-inflammatory, treats digestive disorders, improves digestion, and as a gas expeller. Efficient ways of internal implementation are by mixed the essential oils with some water or milk or by ingesting it as a capsule or in

The external way that uses essential oils (i.e., around the home) such as cleaning the home or dishes by add drops from the oil with the cleaning product for its activity as detergents, more effective in cleaning clothes, add nice smell and some act as

Essential oils are natural substances extracted from several parts of plants by various methods. They are safe as food preservatives because they do not have side effects on human health. In addition, its bactericidal characteristics encourage

utilizing them as medications and in beauty care products.

**5. Ways of utilization**

four ways as follows.

**5.1 Aromatically**

Meditation [31, 32].

**5.2 Topically**

**5.3 Internally**

cooking [32].

**5.4 Externally**

expeller of insects [32].

**6. Conclusions**

**36**
