Even AI don't know, I just asked it. First the thc and cbd molecules are emulsified, essentially breaking them down into smaller molecules that are more easily absorbed. Then the micro particles are coated with "fat globules or water-soluble coatings" to protect them from stomach acids while they are being absorbed. What these coatings are and what fats are used seems to be proprietary info. I would assume they need to use stuff that's GRAS (generally recognized as safe) by the FDA, but hey who knows?