2026年のおすすめエッセンシャルオイルディフューザー4選 | Wirecutterのレビュー

The 4 Best Essential Oil Diffusers of 2026 | Reviews by Wirecutter Advertisement SKIP ADVERTISEMENT We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more › Why you should trust us Who this is for How we picked and tested Our pick: Urpower 2nd Gen 300ml Aroma Essential Oil Diffuser Runner-up: Urpower 500ml Aromatherapy Essential Oil Diffuser Upgrade pick: Vitruvi Stone Diffuser Best for stronger aromas: Organic Aromas Raindrop 2.0 Nebulizing Essential Oil Diffuser Other good essential oil diffusers Using and cleaning your diffuser Diffusers and indoor air quality The competition An essential oil diffuser offers a simple way to make your home smell nice without the use of scented candles or incense. After our tests of more than a dozen different diffusers, the Urpower 2nd Gen 300ml Aroma Essential Oil Diffuser —our pick since 2017—continues to be the best choice. Everything we recommend Top pick The best essential oil diffuser Urpower 2nd Gen 300ml Aroma Essential Oil Diffuser This diffuser produces a strong mist and lasts several hours between refills. But you have to cycle through every light option to turn it off. $20 from Amazon $32 from Walmart Runner-up An equally good 500 mL option Urpower 500ml Aromatherapy Essential Oil Diffuser With a larger, 500 mL tank, this diffuser doesn’t require refills as often. However, it takes up more space than our top pick. $20 from Amazon Upgrade pick A smaller, stylish option Vitruvi Stone Diffuser This compact model is the most attractive diffuser we recommend, but its smaller tank doesn’t last as long as our pick’s, and its mist isn’t as powerful. It’s also far pricier. $100 from Amazon Best for... Best for strong scents Organic Aromas Raindrop 2.0 Nebulizing Essential Oil Diffuser If your top priority is a strong smell, go with a nebulizer. This model is pricier than our top ultrasonic pick and harder to clean, but it’s unbeatable at filling a room (or a few) with scent. $99 from Amazon What to know What kind to get Most of our picks are ultrasonic: They create a cool mist of water and drops of oil. Nebulizers diffuse pure essential oils only. Think about cleaning The best diffusers have one simple, easy-to-clean lid. Decorative double lids can look pretty but can involve more disassembly. Ads can mislead Most diffusers are made of plastic. Even those advertised as “stone” or “wood” are still plastic inside. Pick the right size Tanks holding between 300 mL and 500 mL have a small footprint but provide a long-lasting mist session. Read more Top pick The best essential oil diffuser Urpower 2nd Gen 300ml Aroma Essential Oil Diffuser This diffuser produces a strong mist and lasts several hours between refills. But you have to cycle through every light option to turn it off. $20 from Amazon $32 from Walmart The Urpower 2nd Gen 300ml Aroma Essential Oil Diffuser is a simple white plastic cylinder in a field crowded with funny shapes and faux wood. It’s one of the least expensive diffusers we’ve looked at, yet it works better than models four or five times the price. The medium-size tank provides water for around seven hours; you need to add more oil during that time for continued scent. The machine lights up in seven colors (two brightnesses each), but you have to cycle through all those options to turn the light off. It offers a timer function, it has LED indicator lights that aren’t distractingly bright, and it’s easy to keep clean. Runner-up An equally good 500 mL option Urpower 500ml Aromatherapy Essential Oil Diffuser With a larger, 500 mL tank, this diffuser doesn’t require refills as often. However, it takes up more space than our top pick. $20 from Amazon If our top pick is sold out or you’d like a bigger tank, we recommend the Urpower 500ml Aromatherapy Essential Oil Diffuser , a larger version of our top pick. It produces the same strong, rich mist as its smaller counterpart does. At nearly double the tank size of our top pick, this 500 mL diffuser requires fewer refills—and it has a low-output mode that can run for up to 16 hours. However, a diffuser of this size also takes up more space. Like our top pick, it comes with a faux-wood base or in all-white. It also lights up in seven colors, has a timer similar to that of our pick, and is easy to clean between uses. Upgrade pick A smaller, stylish option Vitruvi Stone Diffuser This compact model is the most attractive diffuser we recommend, but its smaller tank doesn’t last as long as our pick’s, and its mist isn’t as powerful. It’s also far pricier. $100 from Amazon If you’d prefer a diffuser that looks nicer and you don’t need to diffuse scent in a large space, we recommend the Vitruvi Stone Diffuser . With a ceramic shell available in several neutral colors, it’s a stylish diffuser that still emits a decently strong mist and is easy to use. It’s one of the few diffusers we tested with a truly subtle indicator light (positioned on the back of the unit), making it the best choice if you want to run it while you’re sleeping. The tank is small, though, at 70 mL, so you have to refill it more often, and the two layers of lids make cleaning and refilling slightly more annoying than with our top pick and runner-up. At around $100, it’s also considerably pricier. Best for... Best for strong scents Organic Aromas Raindrop 2.0 Nebulizing Essential Oil Diffuser If your top priority is a strong smell, go with a nebulizer. This model is pricier than our top ultrasonic pick and harder to clean, but it’s unbeatable at filling a room (or a few) with scent. $99 from Amazon If you want a device that does the best job of dispersing scent in a large space or across multiple rooms, and you don’t mind spending more money, the Organic Aromas Raindrop 2.0 Nebulizing Essential Oil Diffuser is a nebulizer that mists pure oil. (In contrast, our ultrasonic picks dilute the oils with water.) Unlike with our other picks, the colored lights on this diffuser are more subtle, and it doesn’t issue a constant visible stream of mist; instead, it produces a subtle intermittent spritz every other minute. Compared with other models of its kind, it’s less expensive, prettier, and far quieter, as nebulizers typically make loud grinding or buzzing sounds. The Raindrop 2.0 runs for two hours, and an automatic shutoff helps you avoid overdoing the smell. Like all nebulizers, it’s annoying to clean. Why you should trust us This guide is based on the original research and testing of writer Shannon Palus, who interviewed various experts, including Nena Bowman, PharmD, DABAT , the managing director of the Tennessee Poison Center , to discuss the risks associated with kids getting into your essential oils. In 2024, staff writer Dorie Chevlen retested all of our existing picks to confirm whether they were still up to our standards. Senior staff writer Tim Heffernan, who wrote our guide to humidifiers and our guide to air purifiers , conducted tests to see how the essential oil diffusers affected air quality, using the same particle counter he uses for testing air purifiers. Like all Wirecutter journalists, we review and test products with complete editorial independence . We're never made aware of any business implications of my editorial recommendations. Read more about our editorial standards . Who this is for Unlike candles, a diffuser can’t catch fire, and you can leave it on while you’re away or sleeping. You can also vary the scent just by choosing a different oil. But diffusers do come with a few annoyances: Diffusers take a couple of minutes to set up, and they need cleaning every few uses. And if you have small kids or pets in the house, or if you have respiratory problems , there are health-related reasons to consider skipping a diffuser. According to the experts writing on the American Academy of Allergy Asthma & Immunology’s website, as of February 2020, no studies have explicitly looked at the effects of using an essential oil diffuser on symptoms of asthma. But it’s good to exercise caution if you have asthma: “Anecdotally, there have been reports of respiratory symptoms in asthmatics and non-asthmatics due to a variety of diffused essential oils,” the AAAAI experts write. If you have small children, using a diffuser involves additional considerations. Plan to store your essential oils out of reach, as they smell good enough that kids might assume that they are also tasty. Many oil bottles lack childproof caps, and many oils can be harmful even if ingested in only small amounts . And ingesting citrus and cinnamon oil can cause painful irritation, said Nena Bowman, the managing director of the Tennessee Poison Center. Likewise, if you have pets, keep essential oils out of reach from them, and diffuse oils with caution. Although the biggest danger comes when people apply oils to their pets (which you should never do), you should also avoid putting certain oils in the air, as the oil can settle on their fur. In our article “ Are Essential Oils Safe for Pets? ” senior staff writer Kaitlyn Wells lists which specific oils to steer clear of. If you have a bird, skip the diffuser altogether: Birds’ lungs are sensitive. How we picked and tested Search for “essential oil diffuser” on Amazon, and you’ll get pages upon pages of devices that are all slight variations of one another—many with buttons that look identical. The company that makes our top pick even confirmed to us that some of the manufacturers get their diffuser parts from the same place. Ultrasonic diffusers are the more popular type because they’re affordable and they put out a subtle scent, using a vibrating diaphragm to turn a solution of water and oil into a fine, cool mist. Nebulizers, which blow compressed air through concentrated oil to turn it to mist, produce a stronger smell, and they usually cost more and can be noisy. Note that the word ultrasonic applies to some humidifiers as well, but oil diffusers are not humidifiers—e