We recommend storing essential oils in an airtight container and keeping them refrigerated, separately from food to avoid cross contamination and for added safety. This storage method helps to slow oxidation and provides the longest shelf life possible.
Oxidation is a natural process that occurs as atmospheric oxygen combines with essential oil constituents; this can cause the scent and viscosity of the essential oil to change. In the case of essential oils, it makes them spoil more quickly. Oxidized essential oils are not recommended for use because they often smell unpleasant or “off,” and can cause adverse skin reactions.
With proper storage conditions, oxidation is a slow process and is typically a non-issue for essential oils, as long as they are used within 6-12 months. Heat and direct sunlight accelerate oxidation, so refrigeration is an effective method for avoiding early oxidation. Ideally, the storage refrigerator should be separate from food and only used to store essential oils, but we understand that having a dedicated refrigerator for essential oils is not always possible or practical. The next best option is storing the essential oils in a dedicated area of your regular refrigerator or keeping them tightly sealed in a cool, dark place. Avoid leaving caps off bottles for longer than necessary as another preventative measure against oxidation.
Discard any food you suspect may have come into contact with essential oils. Always store essential oils out of reach of children and pets.