We have spent a lot of time sourcing our oils, and choosing the highest quality oil from the country with the best climate for each individual oil. All of our oils are tested for pesticides and their chemical properties analyzed to insure you are getting the purest oils that match organic standards. Organic certification isn’t feasible in a lot of these countries, but that doesn’t mean the quality is any less. We are working toward adding more organic oils that meet our overall scent standard as they become available.