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Home Page > Aromatherapy Articles & Guides > Essential Oil Shelf Life

Essential Oil Shelf Life

Essential Oil  Shelf LifePure essential oils do not go rancid. Over time, however, essential oils can oxidize, deteriorate and gradually lose their therapeutic value and aromatic quality.

The lifespan of essential oils can potentially vary tremendously from one botanical to the next, from one distillation to the next, and from one supplier to the next. Key factors that can directly affect the shelf life of an essential oil include the following:

  • The composition of natural chemical constituents present in the essential oil

  • The method of distillation

  • The conditions and care used during the distillation

  • The quality of the botanical used

  • The care in bottling, storage and handling of the essential oil by your supplier and any suppliers they obtained the oil from

  • The storage conditions of the oil once you have received it

Because many of the factors that impact shelf life begin with the botanical planting/harvesting, distillation and initial handling/storage of your essential oil, it's important to shop with essential oil suppliers that you trust. Some essential oil suppliers are able to share the date of distillation for each lot of essential oil they maintain. Responsible sellers store essential oils in conditions that are far superior to what we as consumers are able to do. For instance, some sellers keep their bulk oil inventory sealed, nitrogen blanketed and refrigerated or stored in a cold room to protect the oils and dramatically reduce the risk of oxidation. Therefore, an oil that was distilled a year ago but is stored under pristine storage conditions will maintain its therapeutic integrity far better than an oil that was distilled more recently but that was not stored well or was mishandled.


Essential Oil Life Span - How Long Do Essential Oils Last?

Aromatherapy pioneer, essential oil expert, and Essential Oil Safety author Robert Tisserand provides an easy-to-remember rule of thumb for determining the shelf life of your essential oils. He recommends storing your essential oils in the refrigerator and bases these guidelines on proper care and cold storage (halve these guidelines for oils not stored in a refrigerator):

  • 1-2 Years: Citrus, Neroli, Lemongrass, Frankincense, Tea Tree, Pine and Spruce Oils
    (i.e. Oils that contain monoterpenes, particularly limonene, are more prone to oxidation. The more monoterpenes an oil contains, the shorter its shelf life. Most citrus peel essential oils, except Bergamot, consist of 90% or more monoterpenes, and thus are oils that have the shortest shelf life. Other oils that generally consist of over 80% monoterpenes include Angelica Root, Cypress, Frankincense, Pine and Spruce oils.)

  • 2-3 Years: Most All Other Essential Oils
    (i.e. Oils that contain a higher percentage of aldehydes, oxides, monoterpenols, esters, ethers, phenols or ketones.)

  • 4-8 Years: Sandalwood, Vetiver, Patchouli
    (i.e. Oils that contain a high percentage of sesquiterpenes and/or sesquiterpenols have the longest shelf life. Although the aromatic quality of these oils may improve over time, their therapeutic quality can still diminish. Other oils that contain a significant percentage of sesquiterpenes and/or sesquiterpenols include Copaiba Balsam, Gurjun Balsam and Myrrh. Some Cedarwood distillations have higher sesquiterpene concentrations.)

Source: "Lemon On The Rocks: Keep Your Essential Oils Cool" (Robert Tisserand, 2013) [Web site].


Maximizing Shelf Life

The shelf life of essential oils can be maximized by storing them in dark glass bottles, keeping their caps tightly closed, and keeping them refrigerated or in a cool, dry location away from sunlight. As you use up the oil from a large bottle, rebottle the oil into a smaller bottle. This reduces the amount of oxygen that stays in contact with the oil. See the Storing Essential Oils article for more information.



Guidelines for Telling if an Essential Oil Has Deteriorated

  • The aroma has changed
  • The essential oil has thickened
  • The essential oil has become cloudy


Tip: Record the Date You Buy Each Essential Oil on its Cap or Label

Although you may not always know the date that an essential oil was distilled, you can still keep tabs on the age of your oils by writing down your date of purchase on the oil bottle's label. Some companies are starting to put circular labels on the tops of their bottles. For others, I purchase 1/2" round labels and place one on the top of each of my oils. On the label, I jot down the date I acquire the oil and the name of the oil. Being able to view the name of the oil from above is so much easier in finding particular oils in my essential oil apothecary.



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Essential Oil Shelf Life

 

 

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