Are aromatic and fragrant substances that are the result of various extraction techniques from source, raw materials. These fragrant materials are extracted directly from the source through distillation or expression, and have the consistency of an oily liquid. Sometimes, oils that are the result of expression extraction are called extraction oils. Essential oils are concentrated, hydrophobic liquids, prized for their aromatic qualities. They are also known as volatile oils, due to their relationship with hydrocarbons. They are dubbed “essential”, which is unlike other substances bearing the name — essential amino acids, essential fatty acids, etc — in that they are not necessary for homeostasis or nutritional wellbeing.
The most common way of yielding essential oils is through the distillation process, which is more often via the steam process. Their uses are plentiful, with the oils playing extensive roles in both the fields of perfumery and aromatherapy. They are also frequently used in the productions of various cosmetic and self-hygiene products, from soaps to moisturizers. The presence of essential oils in perfumery is age-old, and their role is crucial. Without essential oils, many of the products produced in perfumery wouldn’t be possible, and their integral role is marked by how prevalent they are throughout the fragrances on the market.