What type of container should pre-blended oils be stored in?

Pre-blended oils should be stored in airtight containers to protect the integrity of the oils. Airtight storage prevents exposure to air, which can lead to oxidation and degradation of the essential oils. This is crucial because essential oils can lose their therapeutic properties and aromatic qualities when they interact with oxygen over time.

Moreover, airtight containers help in minimizing the risk of contamination from external elements like moisture, dust, and pathogens, which can further compromise the quality of the pre-blended oils. Storing oils in dark or opaque airtight glass containers is often preferred to block out light, which can also cause deterioration.

In contrast, plastic containers may interact negatively with essential oils, leading to leaching of harmful substances or alterations in the oil composition. Open jars and paper bags do not provide the necessary protection from environmental factors, exposing the oils to air and light and thus accelerating spoilage or loss of potency.