Expiration: It's Complicated When consumers ask if essential oils expire, they are usually trying to understand if the bottle in the back of their cabinet is still safe to use. Using an oxidized oil is not necessarily toxic, but it is often ineffective for the desired therapeutic outcome.
How to Tell if Your Essential Oils Have Gone Bad
You might also notice a change in viscosity; while some oils are naturally thin, a sudden increase in thickness or the presence of residue can indicate degradation. To slow down oxidation and preserve the integrity of the oil, you should store the bottle tightly sealed in a cool, dark location.
Additionally, the material of the container matters; dark-colored glass, usually amber or cobalt blue, is essential to block out harmful UV rays that would otherwise break down the oil's complex chemistry. Over time, exposure to oxygen, light, and heat causes oxidation.
How to Tell If Your Essential Oils Have Spoiled
Prevention and Proper Storage Extending the life of your essential oils is largely about controlling the environment. Understanding this process is the key to maximizing the value and safety of your aromatic investment.
More About Can essential oils go bad
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