For depression: Depression and sleep problems often go hand in hand. A number of studies have examined the effects of aromatherapy using essential oils in people with depression and depressive symptoms, both with and without anxiety. Aromatherapy can help improve depressive symptoms, according to the results of several studies. A study found aromatherapy improved both depression and anxiety in a group of post-partum women. And a 2016 analysis found aromatherapy effective in reducing stress and depression—as well as symptoms of menopause—in middle-aged women.
I am adding cinnamon leaf and clover EOs to my mouthwash with peppermint and tea tree EOs. Before I felt safe using the undiluted EOs but with these new additions I feel like I need carrier. The other ingredients are water, aloe water, baking soda, xylitol and witch hazel. Should I add a carrier oil and which one do you recommend? I was thinking avocado, sesame, grapeseed or olive oil. If the witch hazel has alcohol could this act as a carrier? How much alcohol per how many drops? I’ve heard its about 3-5 drops per teaspoon carrier oil (3-5%). Great post!
Poisoning by lavender is uncommon. In the late 1960s and early 1970s, the LD50 values for lavender taken orally and applied topically were determined. In mice, the oral LD50 was 13.5 ± 0.9 g/kg, where central nervous system depression occurred 10 to 15 minutes following ingestion and death occurred 1 to 3 days later.47,48 Similar results were observed in rats.47 For dermal applications, the LD50 was greater than 5 g/kg, with no systemic symptoms or deaths in rabbits observed up to 14 days.48 In humans, an 18-month-old boy ingested homemade lavandin (Lavandula x intermedia) extract. Three hours following the ingestion, the child developed confusion and deep drowsiness, with adaptive motor response to painful stimuli indicative of moderate brain injury (Glasgow Coma Score = 9). His neurologic status normalized within 6 hours of hospitalization, and a follow-up electroencephalogram was normal at 24 hours. Comparative toxicology analysis between the boy's blood, urine, and pure lavandin extract showed linalyl acetate, linalyl formate, and acetone were detected in all samples. Acetone, which was a confounding factor for coma in the poisoning, was found to be slightly higher than normal in healthy adults and was concluded not to be the cause of the central nervous system depression.49
Modern scientific studies have confirmed this traditional use and found that Jatamansi and its essential oil increases levels of the neurotransmitter GABA (Gamma-Aminobutyric Acid) in the brain. It is also believed to reduce depression and anxiety by increasing the levels of monoamines in the brain. [1,2] Both GABA and monoamines are key neurotransmitters that cause relaxation of the nervous system. Many pharmaceutical drugs for anxiety like Xanax and Valium work by causing the brain to increase levels of GABA artificially, whereas Jatamansi is a safe and non-addictive, natural alternative.
We've covered a lot about aiding mood and mentality, but what about the more physical healing benefits of essential oils? Many plants are natural antiseptics, anti-inflammatories, antimicrobials, and antivirals, so when concentrated into essential oil form, they can function as highly effective remedies for acne, muscle soreness, sore throats, and more. Take ever-versatile peppermint oil, for example. "It's cooling, and can be found in formulated muscle care products along with eucalyptus, wintergreen, and German chamomile essential oils to name a few," Avery says. Try her go-to recipe for a DIY leg rub: "Add 10 drops of peppermint essential oil to one ounce of sweet almond oil, and rub it into leg muscles and feet."
Allelopathy occurs when a plant releases chemicals to prevent competing vegetation from growing within its area or zone. An often-cited example is in southern California, home to the dominant shrubs Salvia leucophylla (sage bush) and Artemisia californica (a type of sage). Both species release allelopathic terpenoids, eucalyptol and camphor, into the surrounding area, which effectively prevents other plant species from growing around them. This is allelopathy. Chemicals that deter competing growth (terpenes, for example) are referred to as allelochemics.
Good question. I wonder what the moisture content of the estimated weights are (HUGE difference as water makes up the majority of a plants’ weight). Nevertheless, I would guess that the environmental impact is minimal to none as most of these plants are numerous compared to harvesting other plants such as hardwoods, rain forest plants, and even corn. Take lavender for example, if it takes 100 lbs to extract 1 lb, that is barely nothing when you consider that lavender grows wild and is abundant. One acre of lavender would probably produce over a ton of plant parts in one mowing for oil extraction (I am guessing based on my experience with a variety of different plant “harvesting”). And it grows fast. To compare weight, imagine mowing a one acre field of mixed weeds 3 ft tall down to 6 inches, you would have a few thousand pounds of plants that would quickly and naturally grow back in a couple weeks. The rose petals are at the extreme ratio but are expensive and used far less than the common oils.
Don’t overdo it though. Remember, these oils are extremely concentrated. Prolonged exposure to essential oils can cause ill effects like headaches, nausea or other unpleasant symptoms. Vary your use with different oils of different chemical compounds so that they don’t build up in your system. And avoid letting your diffuser run all day, every day; there is a such thing as too much of a good thing.

The oils from Marshalls you mentioned stated they are for aromatherapy. These are fragrance oils and probably NO T pure. That’s why they are so much cheaper 🙂 and they are just for enjoying the scent vs. therapeutic benefits. I would not recommend applying them to your skin in any way but the DoTerra oils you bought can be applied once mixed with coconut oil (fractionated will not harden in cool temps), sweet almond oil, argan oil or even olive oil. Any oil you choose should be labeled organic of course

JASMINE. A sweetly floral scent, jasmine appears to have serious sleep-promoting capabilities. Research shows jasmine improves sleep quality and cuts down on restless sleeping, as well as increasing daytime alertness. A 2002 study showed that jasmine delivered all of these sleep benefits, as well as lowering anxiety, even more effectively than lavender.
Thanks for the info. What does it mean exactly when they say an essential oil should be avoided during pregnancy? Does that mean that if my wife is pregnant I also can’t use those oils because she might smell it and be negatively effected? What can and can’t you do with the ‘avoid during pregnancy’ oils while your spouse is pregnant? Thanks a lot, Jim
Five double-blinded and randomized controlled trials using either placebo or active controls were identified that are summarized in the Table.50-54 All trials were conducted in Germany, had a duration of 6 to 10 weeks, and used the oral standardized lavender oil preparation SLO. Studies were conducted in an outpatient setting and were generally mixed between psychiatric and primary care practices. Some major strengths of the studies were adequate power to detect differences in treatments, use of both intention-to-treat and per protocol analysis sets, and prohibition of concomitant anxiolytic medications or psychotherapy during the study period. Participants were predominantly female (66%-77%), an average age of 45 to 49 years, white, and had a moderate to severe anxiety according to baseline Hamilton Anxiety Rating Scale (HAMA) scores. Psychiatric and neurologic comorbidities were generally excluded, including personality disorders, substance use disorders, and suicidality. Varying degrees of depressive symptoms were allowed, although this was study dependent. In all trials SLO was found to be efficacious in reducing HAMA scores (Table) and was well tolerated, with gastrointestinal side effects being the most commonly reported side effect.
While consumers can purchase the products directly from Isagenix, the company recommends they order through independent distributors. Customers who sign up through an independent distributor and purchase an annual membership are eligible to receive the best pricing – known as preferred customer pricing – as well as peer-to-peer support. For preferred customers in the U.S. and Puerto Rico, single oils start at $9.99. Preferred customer pricing for the blends ranges from $17.99 to $28.99, while the carrier oil is $11.99. The diffuser is $44.99 for preferred customers. Oils are also available in beautifully packaged collections perfect for gift-giving.
I agree heather- I LOVE DoTERRA oils!!!  I use them every day and we have never been healthier!  We have never had a bad reaction to them on our skin, even our little kids, because they are PURE.  I used YL all growing up and always had reactions to them, but the DoTERRA are amazing.  I also love that you can take most of them internally!  I used Oregano to kill strep throat I got last spring!  Can’t say enough good about them.  I especially love how the company is so in to education and helping you keep yourself and your family healthy. 
You’ll find essential oils offered everywhere from gifts shops to large retailers, and, of course, online. You may want to start your search for essential oils with reputable companies such as DoTERRA, Young Living Essential Oils, Ancient Apothecary, Living Libations and Edens Garden. Keep in mind, essential oils break down over time, so check your expiration dates; you’ll want one that’s two to three years out from the time of purchase. Make sure you avoid these essential oil safety mistakes.
There are three ways in which essential oils enter the body: orally, topically, and aromatically. Due to the high antioxidant properties of a great number of essential oils, oral administration is only carried out under direct guidance from a healthcare practitioner to treat very serious conditions. Compounds in the oils can cause some serious side-effects if incorrectly ingested.
Aromatherapy is quite popular these days, and it is one way to use many of the essential oils out there. When looking at the best essential oils for diffusers, it is important to note the individual benefits they provide. You can visit an alternative health practitioner, or you can buy your own diffuser and oils for home use. Here we discuss some of the most popular essential organic oils for aromatherapy.
I’ve enjoyed reading this site. There is a lot of good information and banter (though some isn’t so friendly, chill guys). I myself have only been using EO’s for a little under two years. Yes, they have changed my life and for the first time I feel empowered and able to be in charge of my own health care. I am healthier now than I’ve been in a very long time. I’m one of those persons who will take the time to check things out. My daughter told me about EO’s and a fairly new company, doTERRA. I wanted to believe all the wonderful things she was telling me, but not without checking out the company and putting the products to the test. At a lot of expense for me I did some investigating. So far I’ve found the company to be sound and based on ethical principles. I checked into the CTPG cirtification and found it to be sound also. Though the company pays for these extensive tests, they themselves do not perform them. It is third party and I believe available for other companies. With how extensive these tests are it may not be cost prohibative for many companies, however. I hope that others will follow suit eventually cause I know there are many very good EO companines out there. I do believe in EO’s now as I’ve had remarkable results for many health concerns and haven’t had to go to the doctor since I’ve been using them. I’m glad there is a standard finally set up (you guys should check out testing, it’s remarkable)that insures complete purity so that I may feel safe using these oils in a variety of ways, including internally. And yes, they are safe in their PUREST form for internal use. Other companies that follow suit will just give me more choices and give doTERRA healthy competition. HEALTHY competition is a good thing in my book. These oils are starting to ease their way into western medicine. The coming together of a variety of health care choices is what’s needed in this country, and it’s about time. Keep up the good work everyone in taking charge of your own health and the health of your families. Let’s hear it for the family!!!!

Enormous amounts of plants are needed to produce essential oil. In fact, on the extreme end, it takes 4000 pounds of Bulgarian roses to produce 1 pound of essential oil. Other plants like lavender only take 100 pounds of plant material to produce a pound of essential oil. Still, can you imagine how concentrated essential oils must be, in light of how many plants are used to produce them?
This is a great resource. I’ use a variety of essential oils. I have a drawer full. Some from Young Living, Simply Earth, Do Terra and Isagenix. There are many good brands but I think people get nervous about trying new brands especially when they’ve heard from well-meaning friends that only the MLM versions are safe. While I do think MLM brands are tested extensively because they are held to very high standards and don’t want to get shut down there are some non-mlm oil brands you can safely buy especially if you plan to use them in your diffuser. I wouldn’t ingest an oil unless the bottle specifically states you can. For ingesting the brands I use right now are Isagenix and Young Living (I’m sure there are others that are safe but these state they are ingestable). I’ve written many posts about how to use oils and I switch out brands depending on my needs and what I have on hand.
No, at least they shouldn’t have any preservatives. Think of essential oils like the essence of a plant or flower. To have them last they should come in a colored bottle (brown or blue) and be stored out of sunlight. You only use a small bit so that balances the cost. Keep the lids on the bottles and they’ll be fine. Nothing lasts forever (well, I take that back. Honey may just last forever).
#1- Therapeutic Grade is just a selling gimmick. If EO’s are pure, they are equal to any other. There are only a few distillery’s so many of the EO’s come from the same distillery then sold under several names. You should always buy from a company that is willing to give you the GC/MS reports regarding the Lot your EO bottle is from. That tells the constituents of the EO and would indicate if adulterated in any way.
Topical application allows the essential oils to permeate the dermis and directly enter the bloodstream, where it can be directed toward the area of the body that needs its healing power. Combining essential oils with a carrier oil is always a safe idea, and it allows for a greater surface area of application, so be sure to use a carrier oil such as sweet almond oil, coconut oil, or jojoba oil with your essential oil massage. One of the most effective trios of essential oils for massage include lavender, bergamot, and frankincense. Mix one drop each of the three essential oils in 1 teaspoon of carrier oil and apply with long, smooth strokes to the body. Throw in your deep breathing for the ultimate aromatherapeutic stress relief.

I'm updating this post years later to add important information. I do not have all of the information in this series on why I didn't choose certain companies so I would appreciate you not accusing me of coming to silly conclusions. I have gotten threatening emails (some of they cryptic threats), and have been warned about being sued if I published certain things.
There are certain essential oils that should not be taken internally (this can be researched on Mountain Rose Herb website from this article as they list the ones that are beneficial for internal use i.e.: digestive), but some of the common EO’s may be taken internally when mixed with something (i.e.: baked goods, water, etc.). I have personally used lemon and peppermint for this and I really like it. The standard I’ve seen is a drop per 8 ounces although I prefer about half that because I tend to use it in a larger container and drink it through out the day…if you don’t drink it all right away, the flavor seems to increase a bit over time). Be sure to mix/shake it well before drinking. 

Be precautious of suppliers that promote their essential oils as being "therapeutic grade" or "aromatherapy grade." There is no governmental regulating body that grades or certifies essential oils as "therapeutic grade" or "aromatherapy grade." (For more information, read the "Therapeutic Grade" and "Aromatherapy Grade" Essential Oils article.) Not all companies use these terms with any form of deception in mind, but some do. Therefore, it's important to understand the background behind this terminology and evaluate these suppliers based on other factors and the tips shown below.

The practice of using essential oils is known as aromatherapy, and these oils are highly concentrated liquids extracted from a plant, explains Hope Gillerman, certified aromatherapist and author of Essential Oils Every Day. "And while they have a very strong aroma, it's not the aroma itself that has the beneficial effect," she says. "It's the chemicals in the liquid that can have a physiological and chemical effect on your brain chemistry and body."

Are they an eco-conscious company? One of the reasons I choose the essential oil (and herb) company that I use for my personal and business needs, is because of their sustainable practices. I am very passionate about being eco-friendly and when a business goes to such lengths to be a zero waste company as well as put time and money into other eco-conscious projects, I really have to take notice.

What you could do is use one of the safer mint essential oils as a flavoring. I have a great recipe for peppermint brownies and just made homemade ranch with Basil EO. If you have a highly tested pure oil than the therapeutic benefits are really great for using certain ones as flavoring in food or water. Always use a very pure oil that says safe for internal use on the bottle and that is on the FDA’s GRAS list. Peppermint is a great one to replace Wintergreen but Spearmint would also really work and has a more gentle effect in regard to its therapeutic properties.

Much of my frustration comes from mlm companies proclaiming that THEIR oils are the best and that therapeutic grade means everything. Because there are not alot of distilleries around the world, many of us are getting our oils from the exact same places. Yet MLM’s tend to jack their prices up to over double in some cases, and use their claims as being the best to fortify the price increase. I do feel for consumers though. It is hard to know who to trust. I know of quite a few wonderful companies out there, besides mine that have wonderful, well priced oils. Yes, as you said, you will also pay for quality, but you need to trust who that supplier is. MLM’s will always have higher prices because of their structure. While that bothers me, it is their exclusivity that bothers me more, especially when I know we are sourcing from the same places.
Also, if you drink it, you should only use a glass or stainless steel container. Glass is highly preferred over the two and the easiest for cleaning out of the previous EO. The smell/taste of an EO tends to “linger” a bit. This is usually a good thing I would think in say aromatherapy but in this case not so much…unless of course you prefer to use the same EO each time.