Adulteration and fakes have become a huge problem in the industry with essential oils becoming more and more popular. If you find a company with very inexpensive essential oils or where all the essential oils are the same price be wary that they may well be artificial essential oils a.k.a. fragrance oils without any of the natural healing and catalyzing properties and ingredients for which you are looking that will help you.
Here below is one such recent report (January 2015) which has been generously provided and made public by Robert Pappas, Ph.D., Chemistry, Indiana University. Wild Blue Tansy from Morocco is amazingly helpful for those who suffer from allergies. It has become so popular that most suppliers are running out regularly. This has led to people substituting fake, artificial and other tansy oil which is not wild nor Moroccon.
Oils and Absolutes which grow in different parts of the world have different constituents. This is why, for example, Bulgarian Rose Oil is so exceptionally popular. From Wikipedia:
The most common chemical compounds present in rose oil are:
The key flavor compounds that contribute to the distinctive
scent of rose oil, however, are beta-damascenone,
beta-ionone, and rose oxide. Beta-damascenone presence and
quantity is considered as the marker for the quality of rose oil. Even though these compounds exist in less than 1% quantity of rose oil, they make up for slightly more than 90% of the odor
content due to their low odor detection thresholds."
The above GC/MS (Gas chromatography Mass Spectrometry) reading is for Blue Tansy by Robert Pappas, Ph.D. The chemical compounds listed to the right and highlighted with yellow are all indicators
that this oil has been adulterated.
He stated: "With the severe shortage of blue tansy oil this year be on the lookout companies selling heavily adulterated versions of this oil. A client recently sent me a sample for analysis from a very popular wholesaler of essential oils (this is all I was told and that it was not an MLM). The components in yellow point out the main components coming from other oils like wild Moroccan chamomile (Omenis mixta or multicaulis) causing the presence of Santolina alcohol, blue (German) chamomile from Egypt giving rise to bisabolol oxide A and various artemisia possibilities (wormwood, mugwort) giving rise to the high thujone content in the oil. This adulteration is quite disturbing, especially if people were to take this oil internally or topically because true blue tansy (Tanacetum annum), unlike regular tansy oil (Tanacetum vulgare) does not contain any thujone, a known neurotoxin. The oil being sold by this wholesaler has little, if any, actual blue tansy oil in it. My client (whose name is blanked out on the adulterated report) is currently trying to obtain a refund for this oil from the supplier as well as have the company reimburse her for the cost of the analysis report. If the company does not comply then my client says she wants me release her name here so you can contact her directly to find out who the supplier is. Unfortunately my client had to go to the trouble of having me analyze the oil because when she confronted the supplier over the problems with the odor the supplier basically told her she had no evidence and did not know what she was talking about. Please share this report with as many people as possible because if they are buying blue tansy oil they need to really be on the look out and consider having it analyzed for their own safety."
Caveat Emptor - let the buyer beware stated in Greek - nothing new under the sun.