Onei MK-II Review | Overview

The Onei MK-II is by far one of the best hair dryers on the market today. It offers everything you could ask for in a hair dryer: comfort, reliability and most importantly, professional quality results. This excellent hair dryer uses infrared heat and ion infused air to not only dry hair quickly, but also to improve its overall health. The ionized air helps to seal in hair's natural moisture thus improving the condition of dry frizzy hair. This is the perfect hair dryer for those who constantly battle dry, fly-away hair.

The MK-II has an ergonomic design, is lightweight and very quiet, making it wonderfully comfortable to use. It is extremely safe; it has an anti-fire heating coil cover and is an ACLI and thermal limiter Safety Device. It is built to last and comes with a four year warranty. It gives professional quality results with its infrared heat, ionized air, an extra wide temperature range and multiple settings.

With 1800 watts of power, this superb hair dryer dries hair quickly. It has a convenient three meter long cord and comes with a concentrator and diffuser attachments. The Onei MK-II Air Ionique Hair Dryer is perfect for at-home use and professional use in a hair salon.

Features and Specifications

  • Pistol-grip cool shot button
  • Quiet
  • Ergonomic design
  • Two speed settings
  • Extra wide temperature range: 64° F - 221° F
  • Anti-fire heating coil cover
  • ACLI and thermal limiter Safety Device
  • Comes with a concentrator and diffuser attachments
  • Infrared heat and ion infused air
  • Lightweight
  • 1800 watts of power
  • 100-120V
  • Three meter long cord
  • Four year warranty
  • 11 x 11 x 4 inches
  • 2 pounds

User Reviews

Customer reviews for the Onei MK-II are generally very positive. There were numerous customer comments about how wonderfully lightweight it is, how easy it is to use, and how fantastically it works. Customers love that it is very powerful and dries their hair quickly. They also love that it helps to reduce frizzy flyaway hair, and made their hair more manageable and healthier. It is fabulous for curly and wavy hair. Many reviewers complimented the hair dryer over how quiet it is and that the setting buttons are well placed, so they are not accidentally hit during use. Reviewers also praised the MK-II for its convenient long cord and fantastic cool shot feature. Overall, most reviewers felt it was an excellent high quality hair dryer that does a professional job and well worth the higher than average price tag.

Unfortunately, there were a few reviews from customers who were extremely happy with their MK-II, until it suddenly stopped working. Numerous customers said that they used the hair dryer for several weeks or months and loved it, and then one day without warning it just stopped. These same reviewers also stated that when they tried to contact Onei about the hair dryer stopping that they got no response for weeks or an unhelpful response. These reviewers felt that Onei did not honor their four year warranty and had poor customer service.

There were a few customer complaints that it had no lint/hair filter, had a bad plastic smell when in use, and that its electrical cord was flimsy.  There were also a couple of customer complaints that the nozzles fell off easily, that even on its lowest setting it was too hot, and that the informational booklet it comes with offers very limited information on settings and general use. In addition, several people stated they thought it was too expensive.

Please note the pros and cons below are those reported in consumer reviews.


  • Lightweight
  • Long cord
  • Quiet
  • Powerful
  • Dries hair quickly
  • Helps to reduce frizzy fly-away hair
  • Excellent cool shot setting
  • Setting buttons are well placed
  • High quality
  • Great for wavy/curly hair


  • Reports that Onei has poor customer service
  • Many people felt that Onei did not honor their warranty
  • Many customers complained that it stopped working after a few months or weeks of use
  • No lint/hair filer
  • Electrical cord is flimsy
  • Not good for fine hair
  • Strong plastic smell
  • Expensive
  • Nozzles don't fit the best
  • Many people found even the lowest setting too hot
  • Informational booklet it comes with offers very limited information on setting use