Essential oils are aromatic liquid substances extracted from plants through various methods. The most common extraction method is steam distillation, which involves using steam to separate the essential oils from plant material. Other methods include carbon dioxide extraction, cold press extraction, and using solvents to extract absolutes. Essential oils have various uses including aromatherapy, massage, room freshening, insect repellents, and beauty products due to their aromatic properties.

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2. What are essential oils ? Aromatic liquid substances which are extracted from certain species of flowers, grasses, fruits, leaves, roots, and trees. Used in aromatherapy, massage and facial products. Concentrated liquids containing aromatic compounds extracted from plants (eg, lavender); used in aromatherapy applications.

3. ESSENTIAL OIL Essential oil is mainly produced by the process of STEAM DISTILLATION (Hydrodiffusion) Other Methods Carbon dioxide Extraction Cold press extraction Absolutes

4. STEAM DISTILLATION

5. CARBONDIOXIDE EXTRACTION A relatively new method of extraction that is being employed is called carbon dioxide extraction, or CO2. This process utilizes the "supercritical" state of CO2, when it acts both as a gas and a liquid. . The required equipment used for this method is quite expensive but yields a higher volume of essential oil, making more expensive oils such as frankincense widely available.

6. COLD PRESS EXTRACTION Most high quality citrus essential oils are obtained from a cold pressing of the rind or peel. This process is often called scarification Many citrus essential oils on the market are bulk essential oils of inferior quality made by steam distillation of the peels rather than scarification.

7. ABSOLUTES Another method used to extract essential oils from plants is by using solvents. These oils are called absolutes. Absolutes are commonly used to extract the essence from very delicate plant parts like flower petals. Common absolutes are Rose, Jasmine and Mimosa These are used primarily for perfumery and blending

8. USES Aromatherapy Room Freshening Easy Inhalation Massage Insect Repellant Beauty Products Stress Relief Perfumery

9. AROMATHERAPY The use of volatile plant oils, including essential oils, for psychological and physical well-being

10. Some of the important essential oils are Benzoin Citrunella Anise Tuberose Jasmine

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