Unlike others in the essential oils industry, doTERRA is built on firm science. doTERRA employs more than 30 scientists and boasts 2,200 square feet in cutting-edge laboratory space. doTERRA’s committed scientists continue to push the boundaries of rigor in essential oil testing and they are responsible for breakthroughs in sourcing, evolving models of use, and state-of the-art testing procedures. doTERRA has pushed aromatherapy tradition into the 21st century and remains the unmatched industry leader in innovation.
doTERRA's state-of-the-art lab uses the most advanced testing methods to verify the purity and potency of its essential oils.
After the aromatic compounds are distilled from the plant material, each batch is scrupulously tested to ensure that it meets CPTG Certified Pure Therapeutic Grade® standards.
doTERRA developed this rigorous criteria to certify that its oils contain no added fillers, synthetic ingredients, or harmful contaminants. Utilizing its own facilities, as well as trusted third-party labs, doTERRA essential oils undergo the CPTG process to ensure that customers receive the highest quality oil, every time.
The doTERRA mission hinges on discovering and developing the world's highest quality essential oils, and we stay at the forefront of scientific advances by partnering with selected academic, industry, and scientific institutions.
Gas Chromatography and Mass Spectroscopy (GC/MS) have been touted as the standard for essential oil testing, and while they remain an early indicator of quality, they are not a definitive indicator of quality.
As such, doTERRA has developed a testing sequence that far exceeds the industry standard in both breadth and scope. Each step ensures that only the highest quality essential oils pass through quality control, quality assurance, and on to you and your family.
In this phase, essential oil chemists, manufacturing engineers, and quality technicians manually assess the appearance, aroma, and color of each essential oil.
The specific gravity portion of the testing process compares the volume-to-weight ratio to reference standards to verify oil quality and purity.
During this stage, molecules are separated and identified to ensure that the chemistry of the oil matches the expected chemical profile.
FTIR testing uses infrared light to analyze the material composition of an oil to determine if it meets doTERRA's established standards.
Optical rotation tests for chirality by measuring the amount of light bend produced by the orientation of the molecules to determine whether the molecular structure complies with the determined standard.
A refractometer is used to determine the essential oil's refractive index—a measurement of how light spreads through a specific substance—to ensure that the essential oil meets doTERRA's established standards.
Batches that meet the physical testing criteria are then run through a series of on-site contamination tests by expert microbiologists to confirm that there are no harmful contaminants. The oils are tested for potentially harmful microorganisms, heavy metals, and pesticides to certify safe use when proper usage guidelines are followed.
doTERRA also conducts on-going stability testing to ensure that essential oils will maintain their purity and efficacy for the length of their intended use. In this series of tests, chambers that alter temperature and humidity are used to analyze how essential oils react when exposed to different atmospheric conditions for extended periods of time. This testing protocol ensures that doTERRA essential oils will continue to provide safe and effective benefits for years.
Along with an impressive staff that oversees the day-to-day testing and chemical processes for doTERRA essential oils, doTERRA has assembled the industry's most distinguished group of advisors.
Our unrivaled scientific experts and advisors include the world's foremost authorities in essential oil chemistry, botany, microbiology, physiology, research science, nutritional science, and nutraceuticals.
Dr. David Hill, D.C
Founding Executive, Chief Medical Officer / Chairman, Scientific Advisory Committee
For many years Dr. David Hill, D.C. has utilized the benefits of essential oils in modern health practices, and as a physician he is a well-known expert in essential oils and integrative medicine. Dr. Hill partners with physicians and hospitals around the world defining and establishing the medical integration and use of essential oils in modern health practices. He fosters education and advances in essential oil science through a number of university and research affiliations providing cutting edge science for essential oil users. He is a frequent guest on many radio and television shows and has authored a number of books and other publications. Dr. Hill stands at the head of a new era dedicated to empowering others to take control of their own health.
Tory Parker, Ph.D.
Director of Research & Development
Dr. Parker has worked in both the supplement industry and in academia, making him uniquely positioned to understand product development, research, and the physiology and chemistry behind both nutrition and essential oils. Dr. Parker holds a Ph.D. in Nutritional Sciences from the University of Illinois at Urbana-Champaign, has published numerous scientific papers and patents on bioactive compounds, and holds memberships with the American Society for Nutrition (ASN) and the Institute of Food Technologists (IFT). He oversees Research & Development and Quality Control for doTERRA. Dr. Parker also has a contagious passion for teaching people about the connection between a healthy diet and living a long life free from the early onset of degenerative conditions, as well as the role essential oils play in a lifestyle of wellness.
Cody Beaumont, Ph.D.
Director of analytical services and quality control
Dr. Beaumont oversees all analytical laboratory testing and Quality Control activities for doTERRA. He has over 12 years of analytical experience including method development, validation, stability programs, testing and laboratory process improvements. Dr. Beaumont has extensive experience designing and building high quality analytical laboratories, and managing day to day testing needs. Dr. Beaumont holds a Ph.D. in Medicinal Chemistry from the University of Michigan-Ann Arbor and holds memberships in American Chemical Society (ACS) and Association of Official Analytical Chemists (AOAC).
Quality assurance, director
Alexandrea Paul obtained her MA and MPhil degrees in ecology and environmental and evolutionary Biology from Columbia University, New York with a focus on medicinal plants used in Haiti. She received her undergraduate BS degree in zoology from Brigham Young University, Provo, UT and her Masters in Botany on the medicinal uses of citrus from the University of Florida, Gainesville, FL. Alexandrea has over 20 years of dietary supplement experience. Her previous experience was the head of quality in a direct selling environment as the quality director at MonaVie and Neways and as the head of quality in manufacturing environment as quality director at NuStar and Kelatron. Alexandrea’s family is originally from Haiti; she grew up in New York, Port-au-Prince, Haiti, Nassau, Bahamas, Miami, FL and London, UK.
Managing Scientist, Personal Care
Ryan Roberts oversees the personal care and household research and development team. He has worked for several well-known companies developing personal care and household formulations for almost a decade. He enjoys the combination of science, art, and social responsibility that is required when developing new formulations. Ryan received his bachelor degree from Brigham Young University. While studying physiology and chemistry at BYU he gained a great appreciation for how the body functions and how it can be affected by external influences. Ryan has continued his education of personal care product development by being an active member of the Society of Cosmetic Chemists and served as the Chair for the local chapter.
Nicole Stevens, M.S.
Managing scientist, essential oils
Nicole Stevens has been conducting research with essential oils for more than 15 years. She holds a Bachelor’s degree in Technical Writing and a Master’s degree in Botany and Integrative Biology from Brigham Young University. Nicole has worked in quality control laboratories in the nutraceutical industry as well as academic research laboratories at the University of Utah and the University of Nevada Las Vegas Cancer Research Institute. In addition to research, she has taught courses in chemistry and biochemistry at Brigham Young University – Idaho and University of Nevada Las Vegas. Nicole is dedicated to advancing our understanding of essential oils through research and education.
Alex M. DaBell, M.S.
Managing scientist, nutraceuticals
Alex DaBell is the principal scientist for development of doTERRA’s nutritional products. He holds a Master of Science in Physiology and Developmental Biology from Brigham Young University. With nearly a decade of industry experience, Alex is well qualified to lead the development of some of the highest-quality nutritional products available anywhere. He enjoys learning about new discoveries in nutrition and brainstorming how those discoveries might make their way into new and existing doTERRA products. Alex, his wife Lisa, and their three children enjoy the outdoors, making beautiful music, and trying out new recipes.
Jeff Dorsett, MSHS
Research and development scientist
Jeff has a Master of Science in Health Sciences and has over 10 years dietary supplement industry experience in research and product development. Jeff is motivated, task-oriented, and efficient, and his knowledge of the dietary supplement industry is comprehensive and current. He is highly skilled in literature reviews, evaluating scientific research for product development and claims substantiation, and is well versed in the regulations that govern the food and dietary supplement industries. His unique experience and skillset allows him to successfully combine science with regulatory compliance.
Senior research and development scientist
Thao has a love of science as demonstrated through her work on Personal Care and Household products for over sixteen years. Prior to joining doTERRA in January 2015, she has been instrumental in creating world class products for Arbonne, Nu Skin, Neways, Dr. Perricone, Pfizer, Procyte, Pharmacia Upjohn and many more at Sorenco Laboratories. Her experience in working as an Analytical Chemist at Weider Nutrition International for over eight years gave her key insights into cosmetic product formulation. She is passionate about making the best product using the most innovative, safe ingredients and enjoys seeing the satisfaction from Wellness Advocates eyes after testing our products. Thao earned a Bachelor of Science in Chemistry from the University of Utah in 1999. She has been a part of the Intermountain West Society of Cosmetic Chemists and served as secretary.
Lawry Xuesheng Han, Ph.D.
Clinical research scientist, research and development
Dr. Han leads various clinical and pre-clinical research projects, including products and ingredients efficacy and safety studies. He is also responsible for developing and maintaining a network of relationships with external scientists and experts in the field of Nutrition and Health Sciences. Dr. Han holds a Ph.D. in Bioscience from the University of Utah, with primary focuses on Molecular Genetics and Cell Biology. He has worked for several of the best companies in the fields of Biotechnology, Medical Devices, and Nutraceuticals. Dr. Han also has strong expertise and interest in Nutritional Genetics/Genomics. He has been always passionate about improving public health and wellness through advancement of scientific and clinical research in Nutrition and Health Sciences.
Brian Lawrence, Ph.D.
Dr. Brian M. Lawrence was born in London, England, where he eventually worked both as a technician and as a chromatography lab manager in the pharmaceutical industry while earning a degree in Chemistry. In 1960, he was awarded a Fulbright scholarship to study chemistry in Chicago where he also worked at different labs before leaving his university studies to return to the industry. He later obtained his doctorate in pharmacognosy at the State University in Groningen, the Netherlands while working full time in Canada. Dr. Lawrence served as a researcher and the director of research and development until he retired in 2003. He then started a consultancy business which continues to this day. He has published in excess of 80 original articles and reports and has been the scientific editor and natural products editor of the Perfumer and Flavorist for over 30 years. Dr. Lawrence has also published 13 books and 18 book chapters on essential oils as well as acting as senior editor for the proceedings of the 10th International Congress of Essential Oils, Flavors, and Fragrances. In 1989, he founded the Journal of Essential Oil Research and was editor-in-chief until January 2010. He remains on the JEOR editorial board.