What Are Essential Oils + How Are Essential Oils Used?

What Are Essential Oils + How Are Essential Oils Used?

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The vital element in any aromatherapy treatment is the pure essential oil. These oils are very different from the heavy oils we use for cooking; they are concentrated essences, much lighter than water and highly flammable. They evaporate quickly, so the are usually mixed with other ingredients to trap their effectiveness. Because they are so concentrated, essential oils are measured in drops.

Essence 

This is a natural living substance: the “living” element of a plant which is captured and capsuled. It is a delicate operation. For instance, certain petals and leaves must be picked at exactly the right moment, or the quality of the oil is affected. Only the purest essences are used in aromatherapy so that the therapeutic properties are maximised and the effects are predictable.

Essential oils are extracted from an array of plant sources – petals, leaves, seeds, nut kernels, bark, stalks, flower heads and gums and resins from trees. Apart from their sensuous vapours, which provide the fragrance in many perfumes, they can be used in the bath, smoothed over the body and diffused.

Leaves

Because of their small molecular structure, essential oils can penetrate the skin more effectively than vegetable oils, which only lie on the surface. Used medicinally over the centuries, essential oils have now become an established “alternative” natural therapy which can assist in the treatment of almost every type of ache and pain, as well as smoothing away the stress and strains of modern life.

How They Work

Essential oils are composed of tiny molecules which are easily dissolved in alcohol, emulsifiers and, particularly, fats. This allows them to penetrate the skin easily and work into the body by mixing with the fatty tissue.

As these highly volatile essences evaporate they are also inhaled, thus entering the body via the millions of sensitive cells that line the nasal passages. These send messages straight to the brain, and affect the emotions by working on the limbic system, which also controls the major functions of the body. Thus in an aromatherapy treatment the essential oils are able to enhance both your physical and psychological wellbeing at the same time.

Each oil has a distinct chemical composition which determines its fragrance, colour, volatility and, of course, the ways in which it affects the system, giving each oil its unique set of beneficial properties.

Methods of Extraction 

1. Distillation

The Egyptians stored their raw materials in large clay or alabaster pots. Water was added and the pots heated so that steam rose and was pushed through cotton cloth in the neck of the jar. This soaked up the essential oil which was then squeezed and pressed out into a collection vessel. The same principle remains in use today as high-pressure steam is passed over the leaves or flowers in a sophisticated still often using a vacuum, so that the essential oils within them vaporize. When the steam carrying the essential oil passes through a cooling system, the oil condenses and can be separated easily from water.

2. Maceration

Flowers are soaked in hot oils to break down the cells, releasing their fragrance into the oil which is then purified and the aromatics extracted.

3. Enfleurage

This is the method by which flower essences, such as jasmine, neroli and rose, which are more delicate and difficult to obtain, are extracted. Flowers or petals are crushed between wooden-framed, glass trays smeared with a greasy animal fat until the fat is saturated with their perfume.

4. Pressing

This is a simple method of squeezing out, literally, essential oils from the rinds and peel of ripe fruit, such as orange and lemon, into a sponge.

Quality Control 

Once the flowers and plants are harvested they are usually processed and stored quickly to preserve the freshness. Climate, soil and altitude can all affect the character of an oil. French lavender, for example, is famous for its rich aroma but, like wine, the quality can vary from year to year.

Always buy pure and natural essential oils as synthetic clones or adulterated oils do not act on the body in the same way and many of the beneficial properties are lost. The best quality oils may be expensive but they are always worth the extra cost.

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What Are Essential Oils + How Are Essential Oils Used? was last modified: August 4th, 2016 by Alice Nicholls
 
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