dōTERRA Certified Pure Tested Grade (CPTG™) essential oils represent the safest, purest, and most beneficial essential oils available today. They are gently and skilfully distilled from plants that have been grown in their natural habitat and patiently harvested at the perfect moment by experienced growers from around the world. Experienced and seasoned essential oil users will immediately recognise dōTERRA's superior quality and the high standard of naturally safe, purely effective, tested-grade essential oils.