The duration of concentrated cinnamon oil can vary depending on how it is stored and used. Generally, pure cinnamon oil has a shelf life of about 1-2 years when stored in a cool, dark place away from heat and sunlight. Once opened, it is recommended to use it within 6 months to ensure maximum potency and freshness. It is also important to follow the manufacturer's guidelines for dilution and usage to prevent skin irritation or other adverse reactions.
