Unlike CBD oil, CBD crystals have a very long shelf life. If you store CBD crystals in a dry and dark place, they are still edible even after years. CBD crystals do not lose their effect even after a long storage period. The story is different with CBD bud and hemp oil. On the one hand, both products lose their effect after a certain time. On the other hand, they could go mouldy if you don't store them properly. CBD hemp oil should be stored in a dry and cool place and ideally consumed within 3 months after opening.