If a CBD vape is referred to as crystallized or recrystallized, that means the CBD and other cannabinoids inside have started to form crystalline lattices, the natural form of isolated cannabinoids. While recrystallization in vapes is by no means dangerous, it can prevent CBD cartridges from properly vaporizing, resulting in hot, smoky hits. Check for recrystallization by observing the consistency of your vape extract through the viewing window.