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1. Questions about Plant Extracts International

Are Aethereo Essential Oils "therapeutic grade"?

Plants create perfect organic chemical compounds for their own needs and purposes.

People then distill the plants and recover the volatile parts as essential oils.

Some people use these essential oils for wellness and personal pleasure, since many of these essential oils have been shown to have therapeutic applications, and many have attractive aromas, sometimes both.

Some people use these essential oils to support multilevel marketing systems, and attempt to lead people into believing that theirs are better/best/unique/therapeutic, and so on. And some do believe.

Others let the essential oils speak for themselves, give them back their voice so that they can speak to those who use them respectfully.

The plants produced them perfectly in the first place.

What people believe after that depends upon how well they choose to listen.

What is your company’s position on organic?

Organic certification of essential oils does not take into account the main reasons why we choose and use essential oils: for their aromatic qualities and perceived health benefits. Our essential oils are chosen on different criteria – olfactory excellence. Some may have organic assertions, and sometimes the finest oil we can find does come with organic claims attached. In most cases we do not emphasize this, although it may influence the product price.

Biodynamic agricultural methods were developed mainly in Germany and supported by Rudolph Steiner. They are intended as a means to return to ecologically-sound and sustainable agricultural production of foods by enhancement of soil biology and structure. This was and still is accomplished without the use of man-made herbicides, pesticides, and fertilizers. Biodynamic agriculture has devolved into organic agriculture, with some of the esoteric methodology being abandoned in favor of a more easily implemented system. Nevertheless, when honestly pursued, with soil enhancement as the primary objective and healthful food as a logical outcome, organic agriculture is a highly worthy method of food production on a small to medium scale.

Whether the highly important organic growing of food and its certification should spill over automatically to essential oils is a matter of debate. Organically-grown herbs? Definitely. The distilled, hydrolysed, volatile fraction from those herbs? In our opinion, no. In many cases, the plant matter remaining, after being distilled and thereby sterilized, is sold as organic garden mulch. In doing so, the soils in which the plants are grown are further depleted in order to create another viable farming income stream. While this is understandable, it remains a complete denial of the major Organic rationale: improvement of depleted soils.

For these reasons, unless we have deep knowledge of the growing, harvesting, and distillation of an essential oil which meets our olfactory criteria, organic certification is not the primary reason for selection for use by Plant Extracts International.

Do your products ever go on sale?

We do not run promotional sales. We strive to keep our prices fair and consistent, and do not engage in an effort to artificially pulse sales. We do not build promotions into our pricing, nor do we have the added costs of promoting sales, which keeps our prices low and competitive. We prefer that our customers order because they are ready to purchase, not because they are waiting for a sale or promotion to reduce inflated prices. Our customers appreciate the consistency in pricing and the freedom to purchase whenever they are ready, without the risk of missing a sale.

2. Questions about H2EO Diffusers

What are the specifications of an H2EO Diffuser?

DIFFUSER DIMENSIONS - 7 x 6 x 4 ¼ in (175 x 150 x110 mm)
WEIGHT - Diffuser 15.8 oz; Power Adapter 4.4 oz
TRANSFORMER - 120–240V AC/24V DC @ 1000mA–24 VA
ATOMIZING RATE - 1/3 oz to 2 oz (10 to 60 ml) per hour. Rate is extended using intermittent settings (Modes 3, 4 and 5)
WATER DROPLET SIZE - 3-5 microns
CAPACITY OF TANK - 8 oz (240 ml) of water (maximum fill level is the top of the vertical line in the diffuser bowl)
AUTO WATER LEVEL SHUT-OFF - Electronically activated when little or no water remains

What size space will an H2EO Diffuser treat?

Depending on factors including airflow and humidity, H2EO Diffusers are effective in an area of up to 1500-2200 cubic feet.

What do the Colored Display Lights mean?

Many people attribute different light wavelengths to certain effects. Most people simply enjoy the ambience of the different colors. Our belief is that all lights should be turned off for the most healthful sleep. 

Does the Diffuser make a sound when it shuts off?

H2EO Diffusers run very quietly when diffusing, and they do not make a beeping or other sound when they shut off.

Do the Display Lights shut off when the Diffuser shuts off?

If you are running the Diffuser with the Display Lights on, they will not automatically turn off when the Diffuser shuts off at low water. If you want the Display Lights to be off after the Diffuser stops diffusing, press the Power/Lights Button at any time during operation to turn them off.

Does the Diffuser have a timer?

Yes, there are five pre-programmed, timed mode settings. 

1. Mode 1 - If you do not touch the Mode Setting Button, your Diffuser will automatically operate in Mode 1. In Mode 1 your Diffuser will diffuse continuously until it reaches low water level and shuts off. In Mode 1, the left green bar will be lit. Most people generally choose to diffuse in Mode 1.

2. Mode 2 - If you press the Mode Setting Button once, your Diffuser will go into Mode 2. In Mode 2 it will diffuse continuously for two hours, and shut off. In Mode 2, the green bar second from the left will be lit.

3. Mode 3 - If you press the Mode Setting Button a second time, your Diffuser will go to Mode 3. In Mode 3 it will diffuse intermittently – on for 3 seconds, rest for 40 seconds – until low water level is reached and shut off. In Mode 3, the middle green bar will be lit.

4. Mode 4 - If you press the Mode Setting Button a third time, your diffuser will go into Mode 4. In Mode 4 it will diffuse intermittently – on for 15 seconds, then rest for 50 seconds – until low water level is reached and shuts off. In Mode 4, the fourth green bar from the left will be lit.

5. Mode 5 - If you press the Mode Setting button a fourth time, your diffuser will go into Mode 5. In Mode 5 it will diffuse intermittently – on for 30 minutes, then rest for 15 minutes – until low water level is reached and shuts off. In Mode 5, the green bar on the far right will be lit. If you keep pressing the Mode Setting Button, the Diffuser will continue to cycle through Modes 1-5 until you stop on the Mode you wish to use.

Can I diffuse around my pets?

When used appropriately and in small quantities, most essential oils are safe to diffuse around pets, including birds. Diffusion is by far the safest way to use essential oils around pets. At these extremely low levels, your pets should benefit right along with you. Consult your veterinarian if you have concerns about your pet’s allergies or reactions to specific chemicals. As manufacturers, we do not offer advice on specific issues or ailments your pet may be experiencing. If in doubt, there are resources available to pet owners on the internet and in print.

Where are H2EO Diffusers made?

With components sourced to our design and technical specifications, H2EO Diffusers are assembled in Taiwan, and are tested and supported in the USA. They are backed by our One-Year Full Warranty and fast, low-cost, dependable service in Hopkins, Minnesota. Used as intended, H2EO Diffusers are always repairable and need never end up in a landfill.

Do H2EO Diffusers contain BPA?

H2EO Diffusers are 100% BPA and plasticizer free. They are intended for use with pure essential oils or pure essential oil blends that are free of fragrance oils, perfumes, or carrier oils. The material in the bowl of the H2EO Diffuser - nylon - will not interact with essential oils.

Can H2EO Diffusers be used in other countries?

The only changes to the H2EO Power Adapter that are required for operation in any country are accommodations for the various pin configurations that allow the Adapter to be plugged in to a power outlet. We supply either Americas/Japan (straight pin) or EU/Israel (round pin) Power Adapters. For countries outside these areas, a pin adapter is available at low cost at general stores, travel agencies, etc. in the particular country. Any of the pin adapters shown at will enable you to use the Power Adapter supplied with our H2EO Diffuser (input voltage of 110-250 VAC, and output of 24 VDC).

How should I clean my H2EO Diffuser?

1. At least once a week, wipe the Diffuser Bowl with an alcohol wipe, a soft, damp cloth, or a facial tissue. Use a Q-tip or a small brush to gently clean hard to reach places.

2. Some essential oils may contain small amounts of natural plant waxes or resins. These may build up over time unless removed by occasional cleaning.

3. Some essential oils, for example, clove oil and cinnamon bark oil, may cause permanent
discoloration of the bowl; however, this does not affect diffusion.

4. Look to make sure the Fan located in the base of your Diffuser is free of dust and hair and is able to rotate. Pet owners may find that occasional gentle vacuuming of the Fan area will keep it clean and the Fan Blades free to rotate.

5. Occasionally clean your Diffuser by filling the Bowl with up to 8 ounces of water and adding a few drops of a mild dish detergent or vinegar. Run the Diffuser for a few minutes. Empty the Bowl, and carefully rinse with clean water. Gently wipe the Bowl and refill with water. Add your essential oil and enjoy.

6. Never use abrasives or chemical cleaners in the Bowl or especially on the white ceramic
Transducer in the bottom of the Bowl.

Why does my Diffuser spark when I plug it in?

1. There may be an inductive spark if the Power Adapter is plugged into the Diffuser after it has already been plugged into the wall outlet. To avoid this, always plug the Power Adapter into the back of the Diffuser first, and then into the outlet. To unplug, remove the Power Adapter from the outlet first, then from the back of the Diffuser.

2. Check to ensure that you are using the H2EO Power Adapter that came with the Diffuser. If your H2EO Power Adapter has been misplaced, we recommend purchasing a new one. Operating your Diffuser with an adapter other than the as-supplied H2EO 24 volt DC Adapter can harm your Diffuser, and void its Warranty.

3. Sparking should not occur if the correct order of connection is observed. Over time, plugging the diffuser in with the Power Adapter already in the wall may cause damage to the internal components of the Diffuser. Even if following the correct order, a small amount of sparking at the wall outlet or socket can be considered normal. Any electrical appliance that presents any kind of a resistive or inductive load may cause sparking at the wall outlet or socket. However, if plugging into the wall causes excessive sparking, that could indicate that your socket or wall outlet is faulty, and should be checked by a qualifed person.

When the water accumulates at the top of the Lid, is it supposed to fall back down into the bowl of water and make a "drip drop" sound?

As the mist rises in the bowl of the Diffuser, some will hit the baffle on the underside of the Director Nozzle. As it condenses it forms drops that will gently fall and sound like softly dripping water. This is normal.

My Diffuser does not seem to produce as much mist as I thought it would. Is something wrong?

Most of the time, low mist output is due to factors in the room in which diffusion is taking place. If the Diffuser is near an air intake or vent, a fan is running, or a window has been opened, it may appear that the amount of mist coming from the diffuser is reduced. What is really happening is that air movement in the vicinity is causing the mist to evaporate more quickly. The relative humidity in a room will also impact the appearance of the mist as it comes out of the diffuser. If a room is humid, the mist will not evaporate as quickly as it would in a very dry room. If your Diffuser had been producing more mist but there is an abrupt change in output, it is possible there is a problem with your Diffuser. Please read the Troubleshooting Guide to see if that helps.

Why does the aroma of my essential oil diminish after only a few minutes of diffusing?

As with the majority of aromas, human olfactory nerves become adapted to the presence of certain smells in our vicinity. The phenomenon of the nose no longer noticing an aroma – adaptation – happens to us within minutes. Walk into a coffee shop, take in its familiar aroma and a few minutes later, you might smell…almost nothing. The receptor cells in the nose that noticed the aroma simply stopped responding after continued exposure.Therefore, it is natural for people to no longer smell something after a certain length of time.

If you are switching to essential oil diffusers after using candles, for example, or are still having a difficult time even initially smelling your essential oils, it may take 10 to 15 drops (depending on which oil you are using) for you to notice the more subtle aroma. Even so, it will become part of your atmosphere, and you may no longer actively realize the aroma after diffusing for some time.

Despite their apparent simplicity, H2EO Ultrasonic Diffusers are efficient in operation, and very economical in terms of the amount of essential oil that is dispersed into the room. The length of time it takes to diffuse a given amount of essential oil into the room depends on these main factors:

1. The amount of essential oil added to the water in the bowl; 10 drops will last longer than 5 drops, but not twice as long.

2. The rate of diffusion, whether Low, Medium, or High Mist Volume setting; many people run their H2EO Diffuser overnight on Low Mist Volume to prolong the pleasant aroma.

3. The type of essential oil being diffused; the essential oils that have very volatile, highly aromatic components will lose those components relatively quickly, and their absence is more noticeable. In general, blends will last longer than single essential oils because of the wider variety of constituents with different volatilities. Also, blends that are anchored with a “base note” such as Blue Cypress essential oil, will hold the more aromatic notes together for longer times.

Keep in mind that essential oils are being dissipated in minute amounts into the air, and that the benefits are there whether you can smell the oils or not.

Why is there water left in my Diffuser when it shuts off?

Prior to 2018, H2EO Diffusers left 2-3 ounces of water in the bowl as a safeguard against running dry, which, it if happened, could damage the electrical components. The water that remained may contain some mutually-soluble essential oil components; and it is a personal choice as to whether or not you wish to empty out the diffuser between every use, or whenever you switch which essential oils you are diffusing.  However, more than 99% of the essential oils’ volatile components have been diffused by the time the diffuser shuts itself off (unless the amount of oil used exceeded the recommendation), so you are not “wasting” any essential oil. Current model H2EO Diffusers leave little to no water remaining in the Bowl.

H2EO Diffusers are designed to efficiently use 5 to 15 drops of essential oil in the six or so ounces of water converted into mist, meaning the remaining water in a Diffuser can be used multiple times.

Why doesn't my Diffuser seem to shut off immediately?

When little to no water is reached and your Diffuser automatically shuts itself off, the Fan is programmed to continue to run for up to 30 seconds to complete the automatic cycle.

Is my Diffuser overheating if the water or mist feels warm? Won’t this harm the essential oils?

The water in your Diffuser's Bowl will get warm. Under normal operating conditions, the temperature in the Diffuser Bowl will be 100°F, plus or minus 20°F. 

At these temperatures, there is no effect on the chemistry (and, thus, the efficacy) of any essential oil or oil blend, and the warming will assist in diffusing the essential oil.

Quality essential oils are not affected by temperatures below approximately 160°F. 

H2EO Diffusers use ultrasound to create nano-droplets of water, each coated with a molecule-thin layer of the essential oil. To generate these nano-droplets, electronic circuitry is used which generates some heat, which must be dissipated. The most effective way to do this is to transfer the residual heat to the water in the bowl of the diffuser, which is then further dissipated by the diffuser fan into the room's atmosphere.

A gentle warming of the water in the Bowl is normal. The temperature of the water will also depend upon factors including room ambient temperature and humidity, and whether or not the diffuser fan air inlet and/or outlet is impeded.  

We suggest using a thermometer to test the temperature of the water in your Diffuser after it has been running for awhile.

If the water in your Diffuser is above approximately 120°F, please see our Troubleshooting Guide.

Why is water splashing out of the top of my Diffuser? 

The Director Nozzle on your Diffuser (the small round piece that fits in the center of your lid and directs the mist) should have a baffle on the bottom. The baffle is a flat plastic plate that covers about 2/3 of the bottom of the nozzle. If water is coming out of the top of the Diffuser, there are three possible causes:

The baffle can become detached if the Director Nozzle is dropped or stepped on. If this goes unnoticed it will result in the splashing of water out of the top of the Diffuser. This can cause essential oil/water to spill onto the control panel, which can harm the Diffuser’s electronics. All H2EO Diffusers come with two Director Nozzles, one to keep as a spare. If you no longer have the spare, we recommend using that one as a replacement. If you are unable to locate it, replacement Director Nozzles, Lids, and Power Adapters are available for purchase at:

Why doesn't my Diffuser seem to shut off completely?

When low water level is reached and your Diffuser automatically shuts itself off, the fan is programmed to continue to run to complete the automatic cycle. Depending on production run, the fan may run for a few seconds or up to 30 minutes after diffusion stops.

Is it worth getting my Diffuser repaired, or should I just buy a new one?

There are exceptionally rare circumstances in which it makes more sense to purchase a new Diffuser instead of servicing one you already own. Our services are low-cost and dependable, and we automatically renew the One-Year Full Warranty as of the date of service. That helps you know that your investment in your H2EO Diffuser is a good one. Used as intended, H2EO Diffusers are always repairable, and need never end up in a landfill.

Why do I have to pay to send my Diffuser in for service?

We do not pay for postage to get a Diffuser to us for an evaluation because, in the majority of cases, the Diffusers we receive for service are not for Warranty-related issues.

What is the Diffuser made from, and is it safe for use with all essential oils?

H2EO Diffusers are intended for use with pure essential oils or essential oil blends that are free of fragrance oils, perfumes, or carrier oils. The Bowl of the Diffuser is not plastic, but nylon, and will not interact with the chemical compounds in essential oils.

The inside of my Diffuser is stained. Is this normal?

Some essential oils, such as clove, cinnamon or sandalwood, can cause the bowl of a diffuser to be permanently stained. This is due to natural compounds found in those essential oils, some of which can absorb into nylon. This does not impact the performance of the Diffuser in any way, and is considered normal wear and tear on the Diffuser itself and is not covered by warranty.

How can I prevent build-up on my Diffuser's Bowl, Lid, and Director Nozzle?

All essential oils act, to some degree, as solvents. However, with normal use, this is not a problem with H2EO Diffusers. The only situations in which we have seen severe compromising of the materials is with overuse of certain aldehyde-rich oils, such as Lemongrass, Lemon Myrtle, Lemon Tea Tree, May Chang, blends containing Cinnamon, or using impure water. Check to make sure you are not using a carrier oil-based essential oil or blend. Some blends contain sesame, coconut, almond, etc. oil, and these are not to be used in the Diffuser as they do not diffuse.

We recommend using no more than 10-15 drops of essential oil in the Diffuser. 

With regular cleaning, recommended a minimum of once a week, there should be minimal build-up either in the Bowl or on the Lid and Director Nozzle. If the coating build-up continues, you might try soaking the Lid and Director Nozzle in a water/vinegar solution. If you do that on a regular basis you will minimize the problem.

However, if you would like to replace the Lid and Director Nozzle, they can be purchased at Or you order by calling us at 877-999-4236. We are available Monday through Friday from 10am to 4pm Central time.

Why do some essential oils collect on the bottom of the Diffuser Bowl?

There are certain essential oils containing eugenol or methyl eugenol, present for example, in Cinnamon, Cloves, and certain blends. These and some other essential oil components are heavier than water, and will sink to the bottom of the Bowl. If using these oils, use sparingly, and clean the Diffuser Bowl after each use, by running the Diffuser with a few drops of vinegar or dish soap for several minutes and then emptying. If essential oil is allowed to remain on the bottom of your Diffuser’s Bowl, over time it can cause the Transducer seal in the bottom of the Bowl to deteriorate, allowing essential oil to leak onto and damage the Transducer.

Why don’t you replace Diffusers under Warranty?

We have years of experience helping people when issues arise with their Diffusers. We rarely need to replace a Diffuser. We stock the complete inventory of components, and used as intended, they are always repairable. We work hard to keep our customers happily diffusing, and at the same time, to keep their Diffusers out of landfills. This is an aspect of our business that is very important to us. Every Diffuser serviced is tested for 24 hours to assure that it is being returned in perfect working condition. When a Diffuser comes to us for service, Warranty or Non-Warranty Service, we automatically renew the One-Year Full Warranty as of the date of service. That gives you confidence that your investment in your H2EO Diffuser is a good one.

Can an H2EO Diffuser and Power Adapter be used in other countries?

The only changes to the H2EO Power Adapter that are required for operation in any country are accommodations for the various pin configurations that allow the Adapter to be plugged in to a power outlet. We supply either Americas/Japan or EU Power Adapters. For countries outside these areas, a pin adapter is available at low cost at general stores, travel agencies, etc. in the particular country. Any of the pin adapters shown at will enable you to use the Power Adapter supplied with our H2EO Diffuser (input voltage of 110-250 VAC, and output of 24 VDC).

DELIGHTFUL OR ANNOYING...the bubbling, gurgling sounds from your H2EO Diffuser. What causes it, and how to maximize or minimize it. 

Do you enjoy the relaxing white noise sounds of a “babbling brook”? Do you hear that very sound when using your H2EO Diffuser?

Or do you hear the “plinking” sounds coming from your Diffuser, and find them distracting...even annoying? Light sleepers especially may perceive any such sound to be disruptive.

In the manufacture of our H2EO Diffusers, we know that some people want to diffuse essential oils at higher rates, and others prefer to diffuse at lower rates as you would find in Nature on a meditative walk in the woods. To satisfy both preferences, we provide Mist Volume control options, so everyone can create their ideal diffusion experience.

We recently introduced our new H2EO-2018 Diffuser. It employs higher frequency ultrasonics with a new and improved ceramic piezoelectric transducer. Because of the increased diffusion rate, the subject of bubbling water sound has come up again, causing us to revisit the head-scratching questions that have been asked since water-based ultrasonic diffusion of essential oils became popular in the early 2000s.

Thanks to a groundbreaking new study at Cambridge University Engineering Department’s Acoustics Laboratory by Phillips, Agarwal, & Jordan, we can finally understand the complex acoustics behind the “plink” (delightful or annoying!).

If you’re interested, see the entire open-access paper here:

To summarize, the sounds of falling water droplets are generated by the sudden release of air entrapped by the falling droplet.

H2EO owners who prefer to diffuse essential oils in relative quiet, should choose the Low Mist Volume setting. The lower setting will lessen the energy output, reducing the phenomenon.

In addition, adding a drop or two of dish soap or bath gel to the water in the bowl of the diffuser will reduce the surface tension of the water and can lessen the sounds as the droplets fall back onto the water surface.

This phenomenon is not unique to H2EO. It is present in all diffusers and humidifiers which use ultrasonics to generate mist from water. So we offer this information to all who may benefit from this research. We invite you to experiment for yourself to create your ideal diffusion experience!

3. Questions about H2EO Diffuser Service and Warranty 

There are very few service needs with H2EO® Diffusers when they are properly used and maintained. By following the instructions in your User Handbook you will learn how to set up, use, and easily maintain your diffuser for many years of happy diffusing. 

If you are experiencing a problem with your Diffuser, please read through the Troubleshooting Guide It was developed with feedback from customers and our service experts. If you still need help, please contact us. We are happy to work with you to answer any questions and make certain you understand and use the correct settings. Call our Customer Service at 877-999-4236 Monday-Friday from 8am-4pm during summer Daylight Savings Time, and Monday-Friday from 9am-5pm during winter (non-Daylight Savings Time). Or email us at

Problems are usually the result of inadvertent water/essential oil spillage into the electronics of the Diffuser. The main causes of this are: overfilling the Diffuser; moving or bumping it with water in the bowl; diffusing with the Director Nozzle broken, upside down, or missing; or positioning the Director Nozzle so that mist falls onto the Diffuser's Control Panel. Any resulting damage can be resolved through replacement of the damaged component.

We work hard to keep our customers happily diffusing, and to keep their Diffusers out of landfills. Every Diffuser serviced is tested for 24 hours to assure that it is being returned in perfect working condition. When a Diffuser comes to us, whether for service covered by Warranty or Non-Warranty Service, we automatically renew the One-Year Full Warranty as of the date of repair. That helps you know that your investment in your H2EO Diffuser is a good one. It is always our goal to help people continue enjoying their Diffusers.

4. Questions about Aethereo Essential Oils 

What causes variations in perception of aroma intensity of essential oils? 

There are several quite well-researched explanations why the aroma of a particular essential oil is differently perceived by different people, and even by the same person at differing times, with no variation in environmental parameters such as temperature, air movement, or relative humidity.

Further, under controlled conditions, the same individual may perceive the differences between various essential oils even more widely.  For example, Rosemary (cineole chemotype) oil has a minimal perception threshold 10 times lower than that of Sweet Orange Oil, all other things being equal.

Different people have widely divergent “aroma acuity” when referencing the same essential oil, for various physiological and psychological reasons.

Perception of the aroma of an essential oil is dependent upon measurable physical parameters such as vapor pressure, vapor density, and the degree of olfactory equilibrium in the plant chemical mixture that we recognize as an essential oil.

Previous exposure to an essential oil or the plant part from which it is derived, plus a personal physiological assessment of its intensity of its aroma, allows us to evaluate and characterize the essential oil.

Whether we are able to evaluate and characterize the aroma does not necessarily enable us to determine how beneficial or not inhalation of the vapors of an essential oil may be. A strongly-perceived aroma is not a guarantee of a noticeable physiological benefit, and the opposite is equally true: a barely-perceived aroma may be found to be very beneficial.

Research makes it clear that olfactory recognition of an essential oil and its intensity falls more into the area of psychological perception. Research also clearly shows us that the physiological benefit gained from inhaling an essential oil, which may in fact be able to be measured more empirically, does not necessarily correlate with its aroma and intensity.

In our opinion, we can gain much more from study and use of essential oils if we appreciate these differences.

What are your most popular essential oils?

Outside of the well-known single oils such as Lavender, Frankincense, Eucalyptus, Ginger, our blends are our most popular essential oils. BlueMel, Calm, Citrus, Un-Nausea (Ginger Melablend), Breathe (Niaouli Melablend),  Northwoods, Peace (Lavender BlueMel), Respir-Ease, Therabreathe, VetiRose, and Yoga (Rosalina BlueMel) are aromatically balanced and formulated to maximize the efficacy of the constituents chosen for specific aromatic benefits. 

Are any of your essential oils organic?

Some of our essential oils are organic but this is not the main selection criterion. For our position on organic, please see above.

What sort of quality testing do Aethereo® essential oils undergo before being sold?

Aethereo essential oils are analyzed before use by Gas Chromatography/Mass Spectrometry to verify their conformance with our standards. A full range of physical criteria are also measured and assessed for conformance.

Are Aethereo® essential oils safe to use around pets?

When used appropriately and in small quantities, most essential oils are safe to diffuse around pets, including birds. Diffusion is by far the safest way to use essential oils around pets. At these extremely low levels, your pets should benefit right along with you. Consult your veterinarian if you have concerns about your pet’s allergies or reactions to specific chemicals. As manufacturers, we do not offer advice on specific issues or ailments your pet may be experiencing. If in doubt, there are resources available to pet owners on the internet and in print.

How should these essential oils be stored?

Unlike vegetable oils, which are non-volatile fatty acids and are prone to rancidity, essential oils are volatile, do not contain many oxidation-prone constituents, and are therefore very resistent to oxidation. Some, under extreme conditions, can oxidize. That can happen if the essential oil is subjected to heat, sunlight, or the cap being left off the bottle for an extended period of time. Given this severe ill-treatment, some oils more than others can oxidize over time. Only vegetable oils, other than fractionated coconut oil, will rancidify over time.

Room temperature is sufficient to store good quality essential oils. Storage in a refrigerator is not necessary, although in our laboratory we do store Reference Standard essential oils in a refrigerator, and Batch Retention samples in freezers, where we keep them for a statutory five years.

Small refrigerators generally run at about 38-40F, but their most useful feature is that essential oils can be stored in the dark, away from fluorescent lighting. Even though amber glass is fairly useful in keeping ultraviolet light away from the essential oils, dark is better. We use LED lighting in all areas where essential oils are handled, since there are no ultraviolet frequencies in the LED lighting spectrum.

We recommend the use of 7.5 ml bottles of essential oils. If the bottles are stored properly, and firmly capped when not in use, you can use them with confidence for several months or more.

Do not use massage blends that use any carrier oil other than fractionated coconut oil, which is extremely stable. All other vegetable oils will go rancid to a greater or lesser degree. 

Why do the drops coming out of the bottles vary?

We use the standard 1.0 millimeter orifice for all of our essential oils. Smaller orifice sizes are not readily available, and are very frustrating to use with any but the lightest of oils.

The less viscous essential oils do pour more easily than the heavier oils, and we realize this can be something of a problem which can be partly overcome with different pouring techniques; some people try tilting the bottle less, which does help in the timing of the number of drops.

Paradoxically, holding the bottle vertical while dispensing drops allows for a slower drip because the air pressure in the bottle is not equalized, so surface tension is helping to control the drip rate. The trick then is to quickly turn the bottle right way up when the correct amount is about to be dispensed. The well in the drip cap will return any undispensed essential oil to the bottle.

Can your company tell me which oils to use for certain medical conditions or ailments?

Please understand that as a manufacturer of natural products, our company complies with FDA requirements, and therefore cannot dispense any information that might reference a medical condition or constitute medical advice. We are not ­- nor to the best of our knowledge are any other essential oil producers or distributors - licensed to give medical or therapeutic advice. We suggest you consult your qualified health care professional or certified aromatherapist. We do offer suggestions for well-qualified information sources under REFERENCES at

5. Questions about Essential Oil Therapy AethereoSticks

How long will an AethereoStick last?

When kept closed tightly and out of heat and sun, an AethereoStick will last for several weeks after being opened – up to three months or longer. 

What are the benefits of using AethereoSticks, as opposed to patches or cotton balls?

Both user and caregiver appreciate how empowering it is to have control over when, for how long, and how frequently AethereoSticks are used. It is a personal decision when they desire to inhale the aroma. By contrast, the effect from a cottonball or a patch is in play as long as it is active.

With AethereoSticks, one can easily alternate or switch among them for various needs (for example, from nausea to anxiety). As AethereoSticks are kept capped except when in active use, they benefit only the user, whereas the cottonball or patch affect everyone in the area. Even when in active use, AethereoSticks are single person exposure. They benefit only the user and do not affect others in the room. They are the ultimate in personal, private diffusion.

An AethereoStick will be effective to use for many months, versus a day for the effective-life of a cottonball or patch, making AethereoSticks far more cost-effective.

Capped until used, the essential oil is inhaled from within a few inches, so very little aroma is lost to the atmosphere. 

Aethereosticks are effective for at least three months after opening and with daily use, making them extremely cost-effective. Minimal use-by date is 12 months from date of manufacture. Our laboratory testing indicates viable product life is at least twice this length of time.

We currently offer 38 different AethereoSticks in essential oils and therapeutic blends formulated for specific and general well-being.

6. Questions about our Aethereo Massage Oils

Why do you use fractionated coconut oil (FCO) as a carrier oil, as opposed to jojoba, almond, sesame, or other carriers?

Aethereo Massage Oils contain only pure essential oils in a Fractionated Coconut Oil (FCO) base. Rather than use coconut oil (which is not stable under all conditions), we use the fractionated medium-chain triglycerides from coconut oil. These are the fatty acid esters of glycerol, mainly caprylic, capric, and a smaller proportion of caproic fatty acids. In common usage, the term “Fractionated Coconut Oil” (FCO) is used. The abbreviation MCT is also commonly used.

Widely used in medications, cosmetics, and food, FCO is non-toxic, has no discernible aroma, color, or taste of its own. As it contains only medium-chain triglycerides, it is the most stable of all carrier oils. These highly stable formulations will not oxidize over the life of the product with normal use. Aethereo Massage Oils offer pure, clean aromas unhindered by extraneous smells often found in other carrier oils. Their superior ‘glide’ means less is used during each massage.

The PET bottles do not promote photo-oxidation of the constituents. The essential oils are protected by the fractionated coconut oil, which additionally shields the essential oil from atmospheric oxidation. Responsible storage away from sources of heat and light will add further protection.

The right use of essential oils can assist the body's natural ability to balance, heal, and maintain wellness. Our guiding principle is that LESS IS MORE when using these precious plant oils.

Can your massage oils be used as shower oils for dry skin, or are they too thick?

Our massage oils are effective as barriers against excessive moisture loss. This is much different from claims often made in error – that oils are moisturizing. When massage oils are applied to the skin, they will enhance softness and lubricity, skin properties which are diminished by soaps and long bathing times. 

7. Questions about Aethereo Everywhere Travel Fan Diffusers

How big is an Aethereo Everywhere Travel Fan Diffuser?

An Aethereo Everywhere Diffuser weighs less than four ounces (under six ounces with batteries), and measures approximately 2.5” high and 3.5” in diameter.

In what size space is an Aethereo Everywhere Diffuser effective?

Depending on factors including airflow and humidity, this diffuser will be most effective within an eight to ten foot radius.

How is Aethereo’s Everywhere different from other fan diffusers?

Its unique features include:

How is it different from the H2EO Diffuser?

Aethereo Everywhere utilizes a small fan to diffuse the essential oil into the area it is being used. It is ideal for small spaces – cars, hotel rooms, small bedrooms, practitioners’ rooms, or travel to in-home treatment sessions. H2EO AirCare Ultrasonic Diffusers are by far the most efficient way to diffuse essential oils into a medium to large room. They are effective in an area up to 1500 to 2200 cubic feet. Using the water in the bowl of the diffuser as the “carrier” for the essential oil, each nano-droplet of water is covered with a molecule-thin coating of essential oil, which rapidly becomes part of the room’s atmosphere..

How often should more essential oil be added?

These diffusers are designed to diffuse the majority of the essential oil in the first three hours, so adding more oil after 2-3 hours would be optimal.

Does the Aethereo Everywhere Diffuser make any noise?

Aethereo Everywhere Diffusers operate so quietly, that you can’t hear the fan running unless you hold it to your ear. They do not make any beeping noises when turned on or off.

Does this Diffuser heat the oils?

Aethereo Everywhere Diffusers use no heat from any source, therefore the essential oils diffused by them will not be heated. 

Where is the Aethereo Everywhere Diffuser manufactured?

Aethereo Everywhere diffusers are manufactured in Taiwan to Plant Extracts International’s design and technical specifications.

What is the purpose of the Buffer Ring?

The stainless steel Buffer Ring raises the Aroma Pad off the surface of the diffuser well, which helps prevent essential oil carry-over when changing from one oil to another.

The green light is on but I can't hear the Diffuser running. How can I tell that it’s working?

Since it runs so quietly, you would have to hold the diffuser to your ear to hear it. If the green light is on, the diffuser is working.

Are there any essential oils that should not be used in this Diffuser?

Any pure essential oils or pure essential oil blends can be used.

Can I use rechargeable batteries to run this Diffuser?

Rechargeable batteries will work but they cannot be recharged in the Diffuser. 

Do I have to have a Micro USB Cable and a Car Adapter to use this Diffuser in the car?

To use a car adapter (which you may already have for your cell phone) you need a USB cable (which you may also already have for your cell phone). Many people already own both, so if you do, you will not need a special Aethereo USB cable or car adapter. As well as a 7.5 ml bottle of essential, every Aethereo Everywhere Diffuser includes both a USB Cable and a Wall Adapter. 

Will having this Diffuser in a sunny or hot place hurt it or the essential oils?

This would only be detrimental if left in a hot place for an extended amount of time, or if left in direct sunlight.

Is there BPA in this diffuser or in the AromaDiscs?

Aethereo Everywhere Diffusers and accessories are BPA-free.

Is there a warranty on this Diffuser?

As there are no serviceable parts, there is no warranty for this Diffuser.

How do I clean the Aethereo Everywhere Diffuser?

Gently clean the outside of the Diffuser with an alcohol wipe, a soft, damp cloth, or a facial tissue. Wipe out the Diffuser well in the same way. As with all electronic devices, be careful to not get water into the electronics. 




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