All our oils are tested with GC/MS, and all the oils we buy are distilled from plants that are either certified organic, organically grown, or wildcrafted. All are grown without the use of chemical pesticides. We have great respect for all methods of use when it comes to essential oils. With a good education about essential oils, essential oil chemistry, physiology, and safety considerations, we believe all applications (topical, inhalation, and internal) have their place. Read more about our approach to aromatherapy here.