International Therapy Examination Council (ITEC) Aromatherapy Practice Test

The primary method of extraction for most essential oils is steam distillation. This technique involves passing steam through plant material, causing the essential oils to evaporate. The steam carries the volatile compounds into a condenser, where they cool down and separate from the water. This method is highly effective for extracting essential oils from a wide variety of plants, including many flowers, leaves, and roots.

Steam distillation is favored for its ability to produce high-quality essential oils without the need for chemical solvents, ensuring that the therapeutic properties of the oils are retained. Additionally, this method typically results in a more aromatic and pure product compared to other extraction methods. While other techniques exist, such as cold pressing for citrus oils or solvent extraction for delicate flowers, steam distillation remains the most widely used and accepted method within the aromatherapy industry.