Best essential oil diffuser

Best essential oil diffuser: 10 top buys for the finest scented mist

The best essential oil diffuser will scent your home with the natural fragrance of essential oils and humidify and purify the air around you

Top 10 best essential oil diffuser in UK 2021

The therapeutic gadget we could all use, bring the benefits of aromatherapy into your home with our pick of the best essential oil diffusers

Essential oil diffuser benefits: what are the benefits of aromatherapy?

Investing in an essential oil diffuser allows you to take advantage of the benefits of aromatherapy which can effectively reduce feelings of anxiety and stress. (Read: those heart palpitations you seem to experience every time you turn on the news).

According to research, some essential oils interact with the brain and nervous system to positively impact on your health and mood. When they’re concentrated into an essential oil diffuser and therefore inhaled, they can easily stimulate the olfactory system in the brain.

“Clinical studies have shown that aromatherapy by inhalation can have real benefits for people with, for example, anxiety, [problems with] mental focus, depressive symptoms, and menstrual pain,” Robert Tisserand, an essential oil educator and aromatherapy expert from California, told us. Although to be honest, even if they don’t have an impact on your emotions, they’ll still make your space smell *great*.

So, what is the best essential oil diffuser to buy in 2021?

There are tonnes of essential oil diffusers on the market, from budget options to more serious investments. So, in a bid to streamline your shopping experience, we’ve whittled it down to the best.

1. Best Overall – VicTsing 500ml Fragrance Essential Oil Diffuser

This superb ultrasonic diffuser has a large 500ml tank and an impressive 14 color mood-light.

The 500ml tank is well above average size and will be able to hold some 10 – 20 drops of essential oil, allowing you to tailor-make your own cocktails of oils to your heart’s content.

The 500ml tank can provide 15 hours worth of diffusion when running constantly in low-mist mode. This is excellent for diffusing oils around the house for the entire day. The VicTsing 500ml Fragrance Essential Oil Diffuser is capable of diffusing water and essential oils over spaces of around 600 square feet.

Over the course of the day, you could move it between rooms and floors to make sure your whole room is aerated with essential oils. It also has safe BPA-free plastic construction. 

The mood light for this diffuser is also great and features 14 colors. You don’t have to use this as a diffuser, you can simply use it as a humidifier and add drops of essential oils to taste.

It has a selectable timer (1h, 3h, 6h) so you can diffuse for a set time period before auto-cut off. It will also cut-off automatically when it runs out of water. 

Best essential oil diffuser
Best essential oil diffuser

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2. Muji Aroma Diffuser

Tall and slim, this Muji diffuser looks more like a church candle than an electric device, making it a good choice for those who prefer an understated look. Two light settings allow you to adjust the ambiance and you can choose from various timings, so whether you’re trying to eliminate the stuffiness from your bedroom whilst you sleep or create a bit of mood lighting at dinner, the flexible choices allow you to set the tone. Able to hold up to 100ml of water, this diffuser can run for up to three hours, emitting a dry, fragrant vapor in ultrasonic waves. You’ll get a few essential oils included, too, each of which should last for a couple of uses. *UK plug sold separately.

Best essential oil diffuser
Best essential oil diffuser

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3. MEIDI Moon Light Humidifier: Best essential oil diffuser for kids

This MEIDI Moon Light Humidifier doubles as a nightlight for kids, creating the perfect environment for them to drift off into a peaceful sleep. You can switch between white, orange, and yellow light depending on the time of day or preference, as well as setting the brightness level and choosing between continuous and intermittent mist modes. The auto shut-off feature is welcome, too, and turns the mist feature off automatically after 10 hours.

Key Specs – Auto shut-off?: Yes; Maximum continuous operation: 10-hours; Power: Rechargeable battery

Best essential oil diffuser
Best essential oil diffuser

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4. Essential Oil Diffuser

This affordable model is actually Amazon’s best-selling essential oil diffuser. With nearly 70,000 reviews, it’s a great choice for those who don’t mind constant lights (there are seven different color options). Like many other models, it automatically shuts off when it runs out of water, and you can choose between continuous and interval mist settings. 

  • Water capacity: 100ml
  • Maximum mist time: 6 hours
Best essential oil diffuser
Best essential oil diffuser

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5. Tenswall 500ML Quiet Ultrasonic Aroma Humidifier Diffuser

The Tenswall 500ML Quiet Ultrasonic Aroma Humidifier Diffuser is one of the most popular essential oil diffusers in the market and it is also one of the most affordable on this list.

This essential oil diffuser provides a quiet environment for you and won’t produce any noise while operating.

It is very quiet when it is working and it will pump cool mist without producing any sound.

It also has a high/low mist feature that would allow you to change the intensity of the mist being produced by the diffuser.

This will provide a humid environment inside your house and also improve your sleep.

The Tenswall 500ML Quiet Ultrasonic Aroma Humidifier Diffuser will also make your life easier because it has a remote control.

You can turn it on or off without the need to press it directly from the diffuser.

You can also adjust the mood light; set the timer and many more without the need to touch the diffuser. The distance for the remote control is 26 feet or eight meters.

The Tenswall 500ML Quiet Ultrasonic Aroma Humidifier Diffuser is very safe to use and it is made from BPA-freeBuy Now on Amazon material.

This diffuser will guarantee that the item is 100% non-toxic and it is for kids and babies. It can also work up to 16 hours straight in low mist mode.

Essential Oil Diffuser, Tenswall Quiet Ultrasonic 500ML Aroma Diffuser 1396688519859 | eBay
Best essential oil diffuser


Here’s another essential oil diffuser with striking looks. While most diffusers tend towards looking like candles or vases, this model from Urpower stands out with its square design, a choice of seven LED colors, and a quirky wood grain corner that matches the base; ideal if you need a diffuser to match a more modern décor. 

There’s plenty to recommend it beyond the design, too. It works as both a diffuser and a humidifier, and its 700ml capacity means that it can run for more than 20 hours in low mist mode (there’s a high mist mode too). There’s also an adjustable timer that’ll let it run for one, three, or six hours (or continuous use if you prefer), and it’ll shut down automatically if the water runs out.

Mua URPOWER 700ml Square Aromatherapy Essential Oil Diffuser Humidifier Large Capacity Modern Ultrasonic Aroma Diffusers Running 20+ Hours 7 Color Changing for Home Baby Bedroom Office Study Yoga Spa trên Amazon Mỹ
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7. MEIDI Humidifiers Aromatherapy Diffuser Portable USB Quiet Ultrasonic Aroma Cool Mist Humidifier Diffuser 7 Fascinating LED Night Lights, Auto Shut-Off Best Gifts

Meidi Essential Oil Diffuser providing a fragrant, calm, and healthy environment in your residential home in an easy and happy way. All you have to do is add 2-3 drops of your special essential oil into the diffuser, serve it with water and turn it on. It will not only make your place be filled with a subtle and amazing aroma, but the vaporizer will also promote the air and spreading quality, loosen up your mood, and decrease the stress! Stabilize high humidity levels in the air and can refine your inhaling and make your immune system strong. Settling your essential oil duo with a certain amount of water, you can feel like being in an elegant and comfortable spa.

The oil diffuser will be auto turned off when the water is out of a need in order to protect it from being failed out.

It also has a variety of fascinating lights to make the mood accordingly, you can set up specific lights to turn off the light.

  • Very simple To Clean Large 700ml Water Tank
  • 2 Levels Of Quiet Ultrasonic Mist Function
  • Constant & Timer 
MEIDI Humidifiers Aromatherapy Diffuser Portable USB Quiet Ultrasonic Aroma Cool Mist Humidifier Diffuser 7 Fascinating LED Night Lights, Auto Shut-Off Best Gifts (Blue): Health & Personal Care
Best essential oil diffuser

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8. Mini Essential Oil Diffuse

The Portable and Compact Diffuser, Ideal for Smaller Spaces

This mini essential oil diffuser is compact and stylish. By adding several drops of essential oil, it can alleviate your daily fatigue and give you better sleep. Made with BPA-free material, this diffuser works quietly and has a waterless auto-off function to keep you safe. 

With 7 LED soothing colors, you can set the mood or, turn off all lights for total darkness. This is the smallest diffuser on our list so although it is portable, be aware that this won’t be ideal for larger rooms and there is also no timer.

SALKING MINI ESSENTIAL Oils Diffuser,90ml Aromatherapy Diffusers with Rose - EUR 31,02 | PicClick FR
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9. Stadler Form Aroma Diffuser Julia Wit

This ultrasonic oil diffuser from Stadler Form can run for up to a whopping 53 hours. It will emit a fragrance into the air for up to 18 hours of continuous mist operation or 53 hours on interval mode, where it runs on a 10-minutes-on, 20-minutes-off misting cycle. It also offers an oscillation feature and buyers love its quietness and sleek design.

The Julia diffuser has an automatic shut-off triggered by an empty reservoir, so you can rest assured your diffuser won’t overheat if you forget to turn it off. It has an LED light with four color options and a dimming function, but you can also keep the light off completely. 

Aroma diffuser Julia with swing mode, Swiss design - Stadler Form
Best essential oil diffuser

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10. SALKING Metal Essential Oils Diffuser

As well as the usual bells and whistles – including LED lights, a timer, and auto turn-off, we love the ornate pattern on this diffuser and it’s one of the only ones on the market made from metal. 

Whisper Quiet And Cool Mist – Atomize pure water of the essential oil into ultra-fine mist through ultrasonic atomization technology. The aroma of essential oil floats in the air, a 25dB quiet atmosphere can provide a calm and comfortable sleeping night. Aroma diffuser will take you greatly improve your work and study efficiency…

4 Timer And 7 Colour Light – Aromatherapy Diffusers with 4 time setting modes: stable / 1 hour / 3 hours / 5 hours. 7 colors of the light can be adjusted between gradual cycle mode and one-color fixed mode to suit your favorites. Essential oils humidifier also can be used as a night light, help you sleep better.

Home Decor And Gift Idea – Unique Retro Metal Design. Stylish looking blends in well with your furniture, you can also make it as a nice table decoration for your companion. Salking aromatherapy essential oil diffusers also are thoughtful and handy gifts for women. Essential oils diffusers are the newest trend.

BPA-Free And Waterless Auto-Off – SALKING ultrasonic diffuser is made of eco-friendly PP materials, which is BPA-free. SALKING humidifier will auto off when it is waterless, adds to safety and energy efficiency. Oil diffusers are safe enough even if you give them to elderly people, don’t need to worry that they forget to turn them off.

Aromatherapy Diffusers,SALKING 100ml Metal Essential Oils Diffuser,Humidifiers with 7 Colorful LED Lights, Timer and Waterless Auto-Off for Home Decor,Office,Bedroom,Christmas Gifts for Women: Health & Personal Care
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Most diffusers contain a small reservoir which you’ll need to fill with water. You’ll then add a few drops – usually between two and five – of essential oil, before turning the diffuser on (for a guide to which scent to choose, explore our guide to the best essential oils). 

A fan will then turn the water (which contains the oil) into a mist, dispersing it throughout your home. However, some diffusers have a small pad instead of a reservoir. The essential oil is simply sprinkled onto this pad, before being dispersed by the fan. Diffusers powered by USBs, which are often designed to be portable, are most likely to have pads instead of reservoirs.


Some excellent ultrasonic diffusers here. The VicTsing 500ml Fragrance Essential Oil Diffuser looks great and with its efficient 500ml tank, it rates as the best option for anyone wanting to reap the benefits of an essential oil diffuser. 

The Tenswall 400ml Essential Oil Diffuser and SEPOVEDA 400ml Essential Oil Diffuser are both excellent value 400ml tank diffusers with large mood lights but the AIMASON 500ML Essential Oil Diffuser has an extra-large mood light. The Criacr 150ml Essential Oil Diffuser is a brilliant option for single rooms. 


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