Non-toxic, good for the environment, and has a delicate scent.
Definitely vegetable in origin.
It is (drum roll) recycled tealeaves! They save all their used teabags and dry them out, and this is what comes out. Feels like sand, smells like tea, but unlike unused tealeaves, it doesn't stain the fingers. Probably not good if eaten in huge quantities but for children licking their fingers no harm at all. Tia