The term “therapeutic grade” was created and trademarked by newer essential oil companies to differentiate their products from others on the market. The truth of the matter is that the Food and Drug Administration does not certify the quality of essential oils as “therapeutic grade” nor do they provide a certifying label. In fact, the FDA and FTC law treats ingredients from plants the same as those from any other source, stating, “This general-use formula shall consist of an article containing not less than 10% essential oils by volume.” Under the Fair Packaging and Labeling Act (FPLA) companies are required by the FDA to include a list of ingredients. However, “this law is not allowed to be used to force a company to tell ‘trade secrets.’ Fragrance and flavor formulas are complex mixtures of many different natural and synthetic chemical ingredients, and they are the kinds of cosmetic components that are most likely to be ‘trade secrets.’” I think this is where the reference to “only need 10% essential oil to claim it as 100% pure” comes from. If a companies’ essential or fragrance oil constituents are covered by the trade secret status then they are not required to divulge their ingredients which could include stating if they used a solvent to produce the essential oil or what is in their fragrance oil and can claim it as pure. There is not a governing administration to oversee that oils are truly pure before they go on the shelves for purchase, but there is a highly recognized organization (among aromatherapists) that does random oil testing for adulterated oils. I continuously watch out for which companies have been sited and obviously do not purchase from them. I source all of the oils from reputable distilleries and companies around the world that have never had a citation for adulterated oils. Let me just tell you, that you would be surprised to know just how common adulterated oils are in the US. Essential oils come from plants that of which are a commodity. Different growing conditions, soil and region of the world can affect the constituents (components) of the plant that provide the benefits of each particular oil. I, being a trained and certified aromatherapist, research the GCMS (Chromatography Mass Spectrometry Analysis) and the Cerificate of Analysis of each of the oils to ensure they contain the highest percentage of each of the constituents that is most beneficial before I purchase. I have the advantage of being able to choose which batch I purchase, and pass that quality on to my customers. You can trust that you are getting the highest quality at VERY reasonable prices when you purchase Essence Botanicals Co. pure, undiluted essential oils.