The company we use to get our essential oils was founded by a lady who was one of the first to import therapeutic quality aromatherapy essential oils and functional plant extracts to the USA from Europe in the 1970s. She holds a California State Board of Pharmacy Certificate, and has more than forty years of experience in cosmetic and dietary supplement manufacturing. She was instrumental in the development of the first true time-release process used for vitamins and minerals. Our essential oils are obtained directly from the distillers. Most other essential oils are handled by numerous brokers before they reach the consumer. The high quality of our oils is guaranteed by our quality control expert who regularly visits distillers in the various countries of origin throughout the world. To meet the higher quality standards of phytotherapy, each of our essential oils is guaranteed to be pure, genuine, unadulterated, and of a single species. Many commercially available oils are standardized or manipulated to suit flavor and fragrance industry standards. All of our essential oils are guaranteed pesticide-free. Our oils are analyzed by Gas Chromatography and Mass Spectrum (GC-MS) methods at an independent European laboratory and the results interpreted by our quality control expert.