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What are essential oils and how to use them?
Essential oils, sometimes also called ethereal oils or just essences, are the concentrated fragrances of plants. These essences contain the vital force and the strength of the plants in a concentrated form and the fragrance is located in tiny Oil drops in or on top of the plant tissue. On some plants you can detect these Oil glands by sight alone, for example, on the peel of an Orange or on a leaf of the Rose of Sharon when holding it against the light.
Essential oils play an important role in the development of plants. They are energy saving, they bear information, they protect from illness, they regulate temperature and many other things. If there is a particularly high amount of essence in the blossom, the plant attracts the insects it likes or it repels the ones which would not like the plant but who would rather eat it i.e. destroy. Nowadays we benefit greatly from this fact and is used successfully in developing insect repellents.
Containers with essential Oils should always be keep tightly closed because they are very volatile, meaning they evaporate very easily. They are also light sensitive and therefore they should be kept in brown glass which does not let the light through.
Some oils like Jasmine, Patchouli, Rose, Incense and Rose Wood however gain maturity with the years in the same way as a good wine. Essential oils react negatively to very high temperatures and must not drop below zero. Essences from citric fruits are especially sensitive to heat and should therefore be stored in a refrigerator.
The consistency of essential oils can vary; they can be fluid (i.e. Lavender, Lemon or Peppermint) or very viscous (i.e. Vetiver, Mimosa). Colours of the various essences are also quite different. Some of them are transparent and clear such as Lavender and Verbena. Others are dark or brown like Vetiver and Patchouli. The essential Oil of the German Camomile and Yarrow are dark blue and Bergamot is a light green.
Essences do not mix with water, however they will mix with fatty oils, in alcohol, soap and in natural emulsions and emulsifiers such as milk, cream, honey or egg yolk.
Therefore different fields of application arise. Essential oils do not only come from flowers but also from leaves of bushes, needles of trees, barks, roots or fruits.
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