Do Natural Essential Oils Expire?
Yes, natural essential oils do expire over time, though their shelf life varies depending on the type of oil and how it is stored. Essential oils are volatile compounds, meaning they gradually oxidize and degrade when exposed to air, heat, and light. Some oils, like citrus-based ones (e.g., lemon, orange), have a shorter shelf life of about 1-2 years, while others, such as sandalwood and patchouli, can last for decades if properly stored. To extend their longevity, essential oils should be kept in dark glass bottles, away from direct sunlight and heat, and tightly sealed to minimize oxidation. Expired essential oils may lose their potency, develop an unpleasant smell, or even cause skin irritation, so it’s crucial to check for any changes before use.
https://medium.com/@zero.01dim....ensions/what-are-the
