Put your vape cartridges in a container or any other waterproof bag. Remove as much air as possible for proper results. Run the sealed container or bag under hot water for about five minutes to dissolve CBD crystals and turn them back into a liquid oil. Crystallization is usually caused from high purity levels. If you have found that your CBD oil vapes have crystallized it’s due to purity and high concentration. CBD vape carts that have crystallized are not defective.