Aromatherapy Certification Practice Test 2025 - Free Aromatherapy Practice Questions and Study Guide

Essential oils should be stored in a cool, dark place, preferably in dark glass containers to maintain their potency. This storage method helps preserve the chemical properties and therapeutic qualities of the oils. Essential oils are sensitive to light, heat, and air, which can lead to oxidation and degradation over time.

By using dark glass containers, you protect the oils from light exposure, which can cause photosensitivity and alter their chemical composition. Keeping them in a cool environment limits the effects of heat, which can accelerate evaporation and chemical reactions within the oils. This combination of a cool temperature and protection from light ensures that the essential oils remain effective for a longer period.

The other options suggest conditions that would not be optimal for storage. For example, a warm, bright place can lead to degradation, while storing in the refrigerator might not be suitable for all oils, as fluctuating temperatures when opening and closing might affect them. Storing oils in plastic containers is also not ideal, as plastics can leach chemicals into the oils or react with the oils themselves, diminishing their quality.