Natural essential oils by their very nature will vary slightly from season to season. We allow nature to take its course and do not add isolated compounds to the oil to try to standardize the naturally occurring variations of a particular oil. We take both the organoleptic (sight, smell, and taste) and chemical properties into account when selecting and testing NOW essential oils.

"Essential oils are highly concentrated, volatile plant extracts," explains Avery. "We obtain essential oils through a few different extraction methods, and the part of the plant we get the essential oil from can be different depending on the oil but is typically the most aromatic part. Rose oil, for example, comes from the petals of the rose, while citrus oils come from the rind."
Although highly fragrant, concretes contain large quantities of non-fragrant waxes and resins. Often, another solvent, such as ethyl alcohol, is used to extract the fragrant oil from the concrete. The alcohol solution is chilled to −18 °C (0 °F) for more than 48 hours which causes the waxes and lipids to precipitate out. The precipitates are then filtered out and the ethanol is removed from the remaining solution by evaporation, vacuum purge, or both, leaving behind the absolute.
In the article above this blog there is a link that will take you to 19 essential oils that can be used on babies and children. I looked at it, and the URL is Everything I have read about using essential oils on children stresses the importance of proper dilution. Be careful if you decide you want to do this. The word “therapeutic” is tossed around like pizza dough, and it really doesn’t have a scientific meaning when applied to EO’s.
The chemistry of essential oils is influenced by the local geography and weather conditions, as well as the season and time of day when the plants are harvested, how they are processed, and how they are packaged and stored. Each plant is unique in its chemistry so essential oils are never exactly the same-this is different from pharmaceutical drugs that are synthetically reproduced to be identical every time.
The essential oils we use in Everyday Oil are of the highest quality and most tightly regulated in the industry.  They are in compliance with ISO 9001:2008 and come with Material Safety Data Sheets, Certificates of Analysis, and GC Reports. They are never tested on animals, and the ingredients that are Certified Organic are certified by the leading Independent organic certification company, QAI.  Every recommended quality control element is in place.  We don't call them "therapeutic grade" because that's not a real thing, and with Everyday Oil you will always get a very real thing.
I was wondering if you had any blends you recommend for his bottom? He has has staph before as well. I have researched a LOT and soo many pages referrals to the brand Young living primarily, their RC blend, lemongrass, and Theives Oils to help kill bacteria. However, there are so many indepented distributors.. I have no idea what I am reading is real or just another marketing scam….. so my question is if you heard of that particular brand? or better yet own any?
The following properly diluted essential oils appear to be safe for use during pregnancy: benzoin, bergamot, black pepper, chamomile (German & Roman), clary sage, cypress, eucalyptus, frankincense, geranium, ginger, grapefruit, juniper, lavender, lemon, mandarin, majoram (sweet), neroli, petitgrain, rose, sandalwood, orange (sweet), tea tree, ylang ylang. 
I’m not hear to debate semantics on the exact meanings behind doTERRA’s CPTG rating on their oils. Weather it’s a “trademark” or “certification” in the legal sense does not concern me. What I learned is that the tests are being done and they are extensive. Because of that the company can then give you their promise that they are what they say. There really are extensive test, and they are being done by companies other than doTERRA. I trust the oils because of this and the miraculous results I’ve experienced with them. I DO NOT claim that these are the only pure oils on the market. I believe what I’m reading from other bloggers who stand behind oils that give them amazing results. I think that’s wonderful and I for one hope the market for pure oils will continue to grow. I’ve found that things progress much better when “we all get along”. Working together for the highest, healthiest, outcomes is always going to go a lot further than wasting time on hostilities. The oils on the market that are not pure will eventually weed themselves out among those who use EO’s because they simply do not supply the needed results. For those of you who are new at EO’s, take the time to find ones that work, because the good ones DO work wonders. I prefer to talk about amazing, positive progress in natural health care. I do no care to argue about things that have many issues that have many sides that we may have only partial information about. Natural selection will take care of most of the problems. I will not get caught up in the blogging hostilities that pit this company against that company. I want to spend my time on the positive.
"Essential oils, like supplements, are not regulated by the FDA, so it's very, very important to do your research before purchasing essential oils, and have confidence in the purity of your product," said Lauren Dunaway, registered dietitian, owner of Essential Simplicity and distributor of Young Living essential oils. "Make sure that the company you purchase essential oils from has a commitment to quality and purity, from the fields in which they plant their seeds to how they distill the oils."
Simple smells such as lavender, chamomile, and rosewater may help keep you calm. You can breathe in or rub diluted versions of these oils on your skin. Scientists think they work by sending chemical messages to parts of the brain that affect mood and emotion. Although these scents alone won’t take all your stress away, the aroma may help you relax.

One very public example of this came in September of 2014 when the FDA cited both dōTERRA and Young Living, multi-level marketing essential oil companies. FDA agents found clear evidence that some of Young Living and dōTERRA reps were making claims that their oils could prevent and cure Ebola and many other illnesses! The situation was quickly remedied.

I love do terra oils. I have been usining the oils and suppliments internally, neat, and with carriers for over 5 years now. I haven’t died yet, nor my kids or extended family. Network marketing is a great way to market essential oils, because you want to talk to people face to face about the oils and how to use them. There are several companies that I’m sure offer quality essential oils, for me , Doterra has been sufficient for my needs, and I trust the company.
A mucous membrane irritant will produce a heating or drying effect on the mucous membranes of the mouth, eyes, nose, and reproductive organs. It is recommended that mucus membrane irritating essential oils not be used in the bath unless they are adequately diluted in a dispersant such as natural bath gel base, polysorbate or vegetable oil. Bay, clove, cinnamon bark, lemongrass, and thyme ct. thymol essential oils should be avoided in baths completely. Table 5 lists some common essential oils considered to be mucous membrane irritants.
You may be asking yourself, “so, which brand would you recommend I buy, Christina?” and that would be the same question that I was asking myself.  With all of these brands telling me that theirs was the best, I wasn't sure which brand to pick. I had been using Now Foods essential oils and Aura Casia for quite awhile and was seeing success with these brands. I was curious if these more affordable essential oils are working so well, how much better would the “high-end therapeutic grade” essential oils perform?

Thanks for this info; I have dabbled in herbs, oils, teas & decoctions for several decades. I had started to follow some blogs that were espousing a certain brand of eo, and reading just the comments on your page was very enlightening. I have a question: I have used aura cacia on occasion, and been satisfied, yet you don’t list that in your favored brands, and as you stated, their number of organics is large (largest of any supplier at several of my local health food stores). Wondering about your opinions about them. Thanks! Very useful information!!!
Organoleptic testing involves the use of the human senses— sight, smell, taste, and touch. To expert distillers, the senses are used as the first line of quality testing to provide immediate clues to the acceptability of a product. Oil that has an unusual smell, uneven consistency, or strange color instantly tells the distiller that something is wrong. Often times, this testing is used as a preliminary quality control step before any other tests are conducted.
I’ve seen many comments about using Lavender neat, mainly, on children. Just in case anyone is interested in this case study and research about Lavender and Tea Tree oils causing gynecomastia in boys. YL nor DoTerra could get me to even take a chance on using any oil neat after reading about this. Essential oils are great, but can be dangerous, no matter the maker. Respectfully.
At NOW® we’ve established long-standing relations with our essential oil vendors, and we purchase our oils in large quantities that qualify for bulk discounts, which we then pass on to consumers in the form of everyday low pricing. We also sell direct to retailers instead of going through distributors, which can add as much as 30% to a product’s cost.
I’ve used YL and DōTERRA and a few other unheard of brands of essential oils and you have got to check out Ameo Essential oils! It’s a brand new company and I’ve been very impressed with the quality of their oils. Another neat thing they do is show results of the testing of every batch of their oils to prove that they are the same high quality, pure, clinical standard oil as used in research and testing. The scientific research is just amazing with these oils.
Feel free to reach out to me by email and I can give you my number…I have been with a company for a while now and they have great products but also a great comp plan compared to a lot of different companies out there. we just released our Ameo Oils line which is a certified clinical grade oil. Would love to share more information with you. Please reach out to me. One of the top distributors from one of the leading essential oils company just moved over to Ameo oils…The experience, the quality of the product, the comp plan, and the partnering of the moringa nutrition makes this an even more powerful solution to great health and living..
Now, before we dig in, it’s important to remember that just because something is regulated, approved, standardized, or widely available doesn’t mean it is inert, especially when misused. This means for the safe use of any substance, natural or synthetic, following the instructions for intended and proper use, not over-dosing, using common sense, and considering the individual’s unique biochemistry and health history are all paramount.
If you are using Firefox or Google Chrome as a browser there is an app/add-on called “adblocker plus”. Download and install it. When you see floating icons like that and they bother you, right-click over them and scroll down to “block element” or “use adblock” and click OK/Submit/Add. This will remove the floating script/image and allow for better viewing.
I first began studying aromatherapy in the 90s. Thankfully, I never got caught up with particular MLM companies that make marketing claims and promote practices that I find concerning and unsafe. I was avoiding these companies for other reasons and did not realize until I had inquired with NAHA's president at the time, Kelly Holland Azzaro, that the term "therapeutic grade" was apparently coined by one MLM in particular.
I decided that it was time to upgrade my essential oils, and signed up to sell doTERRA essential oils. I didn't really plan on selling essential oils to many people, as I was just looking to get the 25% off discount that you get for being an “Independent Product Consultant” or “IPC” as they call them. When the introductory 3-pack of essential oils (lavender, peppermint, and lemon) came in, I was really excited to smell the difference! The first one that I opened was the peppermint essential oil and I was shocked at what a candy-like smell it had. It smelled so deliciously sweet that I was blown away because all of the other peppermint essential oils that I owned smelled of  the herbaceous earthy peppermint that you find in the garden; doTERRA's peppermint essential oils smelled like the finest peppermint candy I had ever smelled. I assumed, that since these essential oils are 100% pure and “Certified Pure Therapeutic Grade”, that the higher end brands had better smelling peppermint. This excited me, I could smell a difference! I had been afraid that I wouldn't be able to smell the difference. The funny thing is, I thought that because the doTERRA essential oils smelled better AND are “Certified Pure Therapeutic Grade”, that they were better…but I was only listening to the MARKETING.
Essential oils are in fact NOT oils at all, they’ve simply acquired that name because they do not mix with water, just like regular oils. They are a vital liquid present inside living plants — a natural solution of various complex chemical constituents. Scientifically, essential oils are concentrated aromatic volatile plant compounds (‘volatile’ meaning they can change state or evaporate very easily). They are mostly derived from the flowers, leaves, stems and fruits of plants, while some are extracted from the bark and even the sap of trees.
This kind of statement has always left me scratching my head. Sometimes it is also stated as “….EOs are the most OXYGENATED substances on earth.” Whether its meant to be OXYGENATING or OXYGENATED the statement is just plain wrong. Yes essential oils contain oxygen but that doesn’t equate to be “oxygenating” or the “most oxygenated.” Those of you taking my Chemistry of Essential Oils course already know that, 99+% of the time, when we are talking about essential oil molecules, we are concerned only with 3 elements of the periodic table: Carbon, Hydrogen and Oxygen. The molecules in essential oils are mainly mono and sesquiterpenes and their oxygenated derivatives. Essential oils are volatile organic liquids. There are absolutely NO HORMONES (at least not human hormones) OR VITAMINS in essential oils. In addition, of these 3 most common EO elements, Oxygen is the LEAST frequently occurring. If you are just counting types of atoms in the essential oil molecules, Hydrogen is the most prevalent atom followed by Carbon, then Oxygen (again just counting numbers of atoms, not a weight comparison). A large percentage of all essential oil molecules are hydrocarbons (monoterpenes and sesquiterpenes) and don’t even contain Oxygen at all. When the molecules do contain Oxygen, the ratio typically ranges from 1 or 2 atoms of Oxygen to say 10 to 17 atoms of Carbon and 18 to 26 atoms of Hydrogen (for the most common cases of oxygenated mono and sesquiterpenes). Furthermore, the Oxygen in essential oil molecules is BOUND OXYGEN not really available to be delivered in the form of free oxygen radical or oxygen molecules (of course there an infinitesimal amount of dissolved oxygen molecules in just about any liquid but this is insignificant) and thus not very “oxygenating.” It is still unclear to me what the basis for these claims concerning essential oils are coming from and would love to know the literature sources that the claimants are citing as their support. I could go on more about this topic but Robert Tisserand has already written an excellent response to the “Oxygenating” myth on his website, so rather than re-invent the wheel I will refer all of you to read his comments there.
Let’s be clear that my beef isn’t with the product – it’s the misleading marketing done by the MLM’s that has led to their gross misuse. Essential oils are fantastic and their biggest benefit is when they are used in an olfactory sense – that is inhaled and smelt. Diffusing essential oils works wonders for stress, anxiety, and moods. Using diluted oils on the skin can be great for relaxation, to relieve pain, reduce inflammation and just to smell nice! They are a very powerful medicine and when used in these safe and non-invasive ways can help to balance the body and promote healing.
Florasol is another solvent used to obtain essential oils. It was originally developed as a refrigerant to replace Freon. Although Florasol is an "ozone-friendly" product, it has a high global warming potential (GWP; 100-yr GWP = 1430).[11] The European Union has banned its use, with a phase-out process that began in 2011, to be completed in 2017.[12] One advantage of Florasol is that the extraction of essential oils occurs at or below room temperature so degradation through high temperature extremes does not occur. The essential oils are mostly pure and contain little to no foreign substances.[citation needed]