Good Question Merci ! . . . I checked their website too (as I guess you did) and found no answer. Anyone else with an insight????
I like EO products and think they're overlooked for their usefulness in our (Autopian's) arsenal of goodies, (with the exception of Wipe & Shine which is fairly popular - a bargain @ $4).
Their website offers some good stuf with free shipping as well (over $25).