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Ultrasonic Diffusers: Top 7 Things You Need To Know


Ultrasonic diffusers are one of the most widely used types of diffuser these days. But are they the best? What are their pros and cons? How exactly do they work and how do you use them? Are they even safe?


These are just some of the questions we’ll be answering today to help you decide whether or not ultrasonic diffusers are right for you.


Let’s get started!


What are ultrasonic diffusers?


Ultrasonic diffusers are a type of electronic diffuser designed to disperse essential oils into the air as a mist using, as their name suggests, ultrasonic vibrations. They break down the oils’ particles into micro-molecules before releasing them as negative ions into the air.


These negative ions, in turn, attract harmful positively charged impurities in the air, ultimately helping keep the air in your home or office pure and free from dangerous, disease- and allergy-causing particles.


Are ultrasonic diffusers safe?


Ultrasonic diffusers are safe as long as you only use essential oils that are free from harmful additives and limit your total usage to a maximum of three 30-minute sessions a day.


Experts say that this is more than enough time for you to get the healing benefits from your oils. Using your essential oil diffuser—ultrasonic or otherwise—for hours at a time can lead to headaches and an elevated heart rate and blood pressure. Keep in mind that pure essential oils are extremely potent, so you don’t really need to use a lot to see their effects.


Now, if you’re wondering just how potent pure essential oil can truly be, here are some numbers:


  • A single pound of peppermint essential oil requires as much as 256 pounds of peppermint leaves to make.
  • To make the same amount of lavender oil, you’ll need a minimum of 150 pounds of lavender flowers.
  • For the same amount of rose oil, you’ll need thousands of pounds of roses.


Are ultrasonic diffusers humidifiers?


No, ultrasonic diffusers are not humidifiers. The confusion stems from the fact that the former also uses water to work, thereby introducing some moisture into the air. The difference, though, is that this is more of a side effect than the actual purpose of the tool.


In contrast, humidifiers are specifically designed to increase the moisture levels in a room, and, as such, are fitted with much bigger water tanks. Also, they are not really designed to work with essential oils. People primarily use them to counter the effects of super dry weather, such as dry skin and chapped lips.


Are all diffusers ultrasonic?


No, not all diffusers are ultrasonic. There are a lot of different types you can use depending on your specific needs. Some are electric and use water; some use nothing but a bottle, some form of aroma oil and wooden sticks.


The most common types include reed diffusers, fan diffusers, burners, scented oil warmers and nebulizers. Each one comes with its own pros and cons. Reed diffusers are pretty simple and affordable, but they require a lot of maintenance. Fan diffusers are super portable, but are generally not as long-lasting as other types. Burners and warmers (using flames), on the other hand, are usually pretty durable, but quite dangerous due to the fact that they require elevated temperatures and even open flames to work. Finally, nebulizers are awesome for respiratory issues but are not only too expensive, but are also unable to emit fragrances that last as long as other alternatives.


At the end of the day, it’s all about choosing the type of oil diffuser that suits your specific needs and whose cons you can learn to live with.


What are ultrasonic diffuser oils?


Ultrasonic diffuser oils are simply essential oils. You see, unlike other diffuser types, ultrasonic diffusers are not really designed to handle scented oils that contain synthetic fragrance compounds. These compounds will not only leave super sticky residue inside your unit, but, in most cases, also void its warranty.


If you really want to use fragrance oils, then you’re better off simply going with other types of diffusers. In fact, if you’re not actually looking to do aromatherapy, then a diffuser that’s designed to simply disperse scents into the air are a more cost-effective solution. Again, pure essential oils, such as lavender, peppermint, lemon, clary sage and sandalwood are significantly more expensive than simple fragrance oils, so it’s not wise to buy them just for their smell.


Do ultrasonic diffusers cause mold?


No, ultrasonic diffusers don’t necessarily cause mold. Sure, the moisture they release into the air along with the diffused oils creates a damp environment conducive to mold build-up. However, using the right essential oils may help counter this.


Studies show that lemon, clove, cinnamon, eucalyptus and rosemary essential oils are great for keeping mold, as well as harmful bacteria, at bay. So, if you want to keep your home or office mold-free, then simply use any of these oils from time to time—that and limit each diffusing session to the recommended duration to minimize the amount of moisture that gets introduced into the air.


Do ultrasonic diffusers leave an oily residue?


No, ultrasonic diffusers do not leave an oily residue, especially if you only use pure essential oils with them. You see, pure essential oils are naturally unable to leave any residue behind when diffused, thanks to the chemical reaction that happens before they are released into the air.


The only time you should worry about residue is if you accidentally spill your oils while setting your ultrasonic diffuser up—which can happen with pretty much any type of diffuser you use anyway. But even if that happens you still won’t have to worry about dealing with a greasy mess because pure essential oils are not at all oily, thanks to them not actually containing any fatty acids.


The bottom line: it all boils down to what you need


At the end of the day, while ultrasonic diffusers are definitely a great tool, your choice should still ultimately depend on your specific requirements. The good news, though, is that you now have all the date you need to make a truly informed decision.


Happy diffusing!