Shelf Life and Storage from the time of distillation:
It is impossible to say exactly what an essential oil shelf life will be. The storage conditions will vary and make a significant difference. If the essential oil has been received directly from the distiller shortly after distillation and the glass bottle is kept dark, full, closed, and cool, we can make some generalizations. Please note these are simply Aromatics Internationals opinions based on experience and an understanding of the chemistry of each oil.
Note that if an essential oil begins to appear cloudy, thicker, or if it smells more acidic, it has likely begun to oxidize.
For a specific essential oil please view that product detail page. View Gallery >
General shelf life from a chemical family perspective:
About 1-3 years – Monoterpene rich oils, Monoterpene/Oxide (cineole) rich oils, Monoterpene/ Aldehyde rich oils, Monoterpene/Monoterpenol rich oils.
About 3-5 years – Monoterpenol rich oils, Monoterpenol/Ester rich oils, Ketone
and Phenol rich oils (Phenols are closer to 3 years).
About 6-8 years, or longer – Sesquiterpene rich oils, Sesquiterpenol rich oils.