This actually dates from May 2010, but judging from the related comments, has only recently been noticed. The statement that “Clary sage is the essential oil that is most widely used to treat vision problems” is not true, since there are no essential oils commonly used to treat vision problems. The only evidence for any essential oil treating any eye problem relates to tea tree oil and eyelash mites (see below). The reference to clary sage probably derives from 17th century European herbalists, but this refers to using clary sage seeds, or mucilage made from them, and not to clary sage essential oil: “The seed put into the eyes clears them from motes and such like things gotten within the lids to offend them, and it also clears them from any white and red spots which may be on them” (Culpeper 1652). Another common name for clary sage (Salvia sclarea) was “clear eye” because of this common use of the seeds, which probably pre-dated Culpeper by many years. “Clary” may derive from “clear-eye.”
research, research, research. Some oils are labeled as Generally Regarded as Safe for ingestion. Get a copy of Higley’s book ” Reference Guide to Essential Oils ” and other guides on how to use your oils. I am not a fan but some people swear by it. The books and research will help you know what you can and cannot ingest, how it is recommended that you ingest it, and so on. Do not let the naysayers frighten you. Learn all you can and use facts to make your decisions. I use EOs daily but I prefer them topically and aromatically. You need to decide for yourself what ways your EOs best work for you.
The concern with oils not being pure is a valid one. For many reasons, often related to a distiller or supplier wanting to make more money, adulteration of essential oils is a serious problem.  Oils are adulterated at various stages of their production, and in many different ways. Finding an honest retailer who specializes in essential oils will minimize or remove your risk of purchasing an adulterated essential oil. Retailers who specialize in selling essential oils will be more likely to provide pure essential oils, as they will be more involved in the essential oil trade, and more likely to be concerned that their product be valid, since it is their primary source of business and reputation.
Wondering how those great smelling essential oils are made? Turns out, essential oils aren’t “made” at all. They ARE “extracted” from plants, herbs and spices. But just because they are extracted from plants doesn’t mean the way they’re sourced is all the same. In fact, the way they’re extracted from the plant or herb can have a big impact on the quality. Here’s a quick rundown of the two primary ways essential oils are extracted from the plants.
Lee, I think I just fell in love with you tonight from reading your article. You said everything I have wanted to say about MLM EOs and you backed it with citations! I am constantly angered by the advice given by these reps to use oils undiluted and to ingest them. I work as a Wellness Specialist at a local grocers and we sell essential oils. Recently a customer was looking at our oils and was told by some random lady (I am assuming she was a YL rep) that she "should not ingest those oils because they are not therapeutic grade". After the woman walked away, I told the customer she should never ingest any EO oil, regardless of the brand. I was fuming because 1. This woman was giving unsolicitated, unsafe advice in my place of business where I take my customer's health seriously and 2. Because the rep somehow figured her training as a rep trumped my soon to be completed Aromatherapy certification. I just have a difficult time understanding why the advice of a MLM company who's primary goal is to make money would be more believable than certified Aromatherapists who typically make little money but truly love the people they help. It is mind baffling to me! Thank you, thank you, thank you for being the voice behind this crazy issue!

An absolute is a fragrant liquid that is extracted from the plants using chemical solvents, like alcohol. Though the solvents are removed after the extraction process, there still remains a tiny amount of the chemical in the final product. Absolutes are much thicker and more concentrated than essential oils, and because of this they are often used in skin care products and lotions.
MEVEI was founded out of our pure passion for premium and luxury essential oils. The benefits of essential oils extend far beyond aromatherapy. Instead of focusing only on the therapeutic value of the oils and competing purely on price, we differentiate on providing an exceptional experience to your daily beauty routine. The ancient civilizations had long ago perfected the art and science of extracting and harnessing the natural benefits of the worlds most treasured botanical ingredients and our mission is to demystify those golden secrets; and to craft extraordinary products of sophistication as an unforgettable addition to your lifestyle. Our all-natural products aim to inspire and deliver a touch of glamour to make your every day special.

Hi Karen, businesses with a multi-level (network) marketing structure need to have higher prices because so many people take a cut from each sale. That’s not to say the quality of the product is not good, but you can get the same quality for less. On the other hand, you can’t necessarily go for the cheapest either! Price is only a rough guide to quality. Check out this blog post: http://tinyurl.com/ler5shs. There are several grades of ylang-ylang oil, – extra, I, II, III and complete, but this does not apply to any other essential oil https://roberttisserand.com/2014/01/re-distilled-essential-oils/
Supercritical carbon dioxide is used as a solvent in supercritical fluid extraction. This method can avoid petrochemical residues in the product and the loss of some "top notes" when steam distillation is used. It does not yield an absolute directly. The supercritical carbon dioxide will extract both the waxes and the essential oils that make up the concrete. Subsequent processing with liquid carbon dioxide, achieved in the same extractor by merely lowering the extraction temperature, will separate the waxes from the essential oils. This lower temperature process prevents the decomposition and denaturing of compounds. When the extraction is complete, the pressure is reduced to ambient and the carbon dioxide reverts to a gas, leaving no residue.
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