Pure essential oils are the volatile - or ‘readily evaporated’ - chemical constituents of plants. These evaporating chemicals are what give plants their aromas; the sweet spicy scent of fresh basil, or the sweet tart smell of a grapefruit. The chemical composition of the oils varies widely between plant species, and even within the same plant depending on the region where it is grown. The Thymus vulgaris species of Thyme, for example, has four distinguishable types of essential oil, each with its own therapeutic uses. And most essential oils are quite complex, being made up of tens, sometimes hundreds of individual molecular components.

Original post by ArticleRich.com: Health & Fitness | Aromatherapy

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