Top 10 Best Aroma Diffusers 2021 Reviews

An aromatherapy oil diffuser is a device that uses water and ultrasonic waves to diffuse essential oils throughout a room. They are popular because of their ability to humidify the air while diffusing essential oils into a room. The benefits of using an aromatherapy oil diffuser include relaxation, mood elevation, preventing illness, pain relief, helping you breathe easier, repelling insects, safe alternative to candles, improves cognitive function, and more. Now that you understand what they are for, you’ll want to find the best aromatherapy oil diffusers for you.

10. Mini Ultrasonic Aroma Diffuser

Mini Ultrasonic Aroma Diffuser

This 300 ml diffuser has a unique wood grain design and is great for home, office, bedroom, living room, study, yoga, or spa. It has seven different colors of light that can be adjusted from bright to dim, and you can set the timer to 1 hour, 3 hours, or 6 hours. It has a cool-mist humidifier and an auto-shutoff feature.


  • No-heat ultrasonic means a totally silent environment. The smooth mist spray leaves a pleasant fragrance and helps soothe dry and chapped skin. It also has an auto-shutoff option.

9. Instanatural Essential Oil Diffuser

Instanatural Essential Oil Diffuser

Not only is this a diffuser, but it also includes an ultrasonic mist humidifier and ionizer. It has a 100 ml water capacity and offers soft blue LED light. Enjoy 4-5 hours of continuous aromatic experience with a modern and trendy design. It is has a modern and trendy design.


  • It is noise-free with an auto-shutoff feature that shuts the diffuser off when all of the water has run out.

8. Urpower Aromatherapy Essential Oil Diffuser Humidifier

Urpower Aromatherapy Essential Oil Diffuser Humidifier

Containing 200 ml of water capacity, this essential oil diffuser has 7 different color LED lights to choose from. It is a 3 1 aromatherapy diffuser, humidifier, and night light. It offers up to 6 hours of mist and may be used as a non-aromatherapy humidifier to improve air quality and prevent damage from second-hand smoke and allergens. It’s timer options include 1 hour, 3 hours, 6 hours, or an ON option.


  • Provides moisture for dry cough, sinus irritation, and dry skin. You can adjust the mist from high to low, and when the timer is up or the water runs out, it stops.

7. Square Aromatherapy Essential Oil Diffuser

Square Aromatherapy Essential Oil Diffuser

This large capacity of 700 ml diffuser is the biggest on our list. Its modern ultrasonic technology offers up to 20 hours of mist. It has 7 different colors to choose from to turn the light off completely and is BPA free.


  • Simple yet modern design is suitable for men or women, young or old.

6. Urpower Essential Oil Diffuser

Urpower Essential Oil Diffuser

A wood grain finish gives this diffuser a natural and primitive look. It has 7 different LED colors and a 130 ml water capacity.


  • It offers a 90-day money-back guarantee and one year warranty.

5. Taotronics Aromatherapy Diffuser

Taotronics Aromatherapy Diffuser

Relieve modern-day stress and create a comfortable and relaxed environment with this zen-style wood grain design diffuser.

It offers 3 in 1 technology:

  • Ultrasonic diffusing quietly cleanses your living space and raises the air quality.
  • The humidifying process adds moisture to the room, which soothes dry skin conditions.
  • LED mood lighting provides a night light and light therapy to accompany your sleep.
  • It holds 300 ml of water and has 7 colors with strong or soft options.


  • Enjoy up to 8 hours of continuous use with auto-shutoff when water is low.


4. Urpower 2nd Generation Aroma Essential Oil Diffuser

Urpower 2nd Generation Aroma Essential Oil Diffuser

This portable diffuser goes everywhere! Take it to yoga, the gym, the office, baby’s room, or any room with up to 200 square feet. It includes a timer with options of 60 minutes, 180 minutes, 360 minutes, or ON. It holds 300 ml of water and can be used for up to 8 hours at a time.


  • It has a 45-day money-back guarantee and an 18-month warranty. Prevents damage from second-hand smoke, stale air, and allergens.

3. Innogear Aromatherapy Ultrasonic Mist Diffuser

Innogear Aromatherapy Ultrasonic Mist Diffuser

Enjoy pleasant aromas for a calm and relaxing environment with this zen-style diffuser. The craft art fits with any decor, and each of the 7 mood lighting colors is adjustable between bright and dim. It is a perfect nightlight for kids or a mood light for creating a romantic atmosphere. It has 200 ml of capacity, and the whisper smooth mist means it also creates a quiet environment.


  • Timer settings of 1 hour, 3 hours, 6 hours, or steady on. It also has an option to turn all lights off and an auto-shutoff feature.

2. Urpower Wood Grain Ultrasonic Cool Mist Humidifier

Urpower Wood Grain Ultrasonic Cool Mist Humidifier

You can fill a room of up to 269 square feet with this 300 ml capacity diffuser. It offers 4 timer settings and 7 soothing light colors to choose from.


  • Offers up to 10 hours of use plus an auto-shut-off feature.


1. Innogear Aromatherapy Essential Oil Diffuser

Innogear Aromatherapy Essential Oil Diffuser

This whisper-quiet ultrasonic diffuser releases a lovely fragrance that helps you relax after a long day. It masks smoking and pet odors and gives you a peaceful night’s sleep, surrounded by an aromatic fragrance. The humidifier prevents dry, stuffy air and flu/cold germs. It also adds moisture to prevent dry and chapped lips during the dry winter months.


  • It has an extra-long power cord that is 6 ft long and can be used for up to 6 hours.
    It is portable and has an auto-shutoff feature when the water level gets low.