Whole Foods Market and Wegmans are both nationwide stores that sell essential oils. Essential oils can also be ordered from online retailers that ship to customers nationwide. Two such online retail sites are Olbas Herbal Remedies and Kokokahn Pure Essential Oils and Aromatherapy.
Essential oils reportedly contain cosmetic and medicinal qualities. They are sometimes used to replace over-the-counter remedies when a more natural healing method is desired. Essential oils are easily absorbed into the skin, but they are not meant to be ingested. They are very potent and can last a long time. Usually only small drops are necessary for any type of treatment. It is not uncommon for some essential oils to last up to 10 years. Citrus oils, however, don't last quite as long. Their shelf life is usually about two years. Some essential oils require the use of a carrier oil which helps dilute the oil's potency and serves as a product base. Almond and coconut oils are often used as carrier oils.
For an essential oil to be considered pure, the isolation process must be done by physical means only. The methods used in the physical process are expression, also known as cold pressing, and distillation with water and steam.