Once the CBD product is open, it is recommended that you store in a cool, dry and dark place. Storage in a refrigerator is not necessary, but may prevent heat-related breakdown if you live in a hot environment. Keep tinctures completely capped to prevent exposure to air-borne bacteria or fungal spores, and clean the dropper after each use to prevent contamination. Our CBD products have a shelf life of 18-24 months if you follow these guidelines.