Onei MK-I Halo Flat Iron

Best Flat Iron for Brazilian or Chemically-Treated Hair

Why people love it
  • Heats really fast 
  • Terrific operation  
  • Awesome settings and control

That warranty comes in handy as some users report issues with their flat irons dying a little too early, and there are those that report heat damaged hair as well. 


This flat iron uses a combination of infrared and ionic energies to protect your hair from damages. But, you still can’t crank it all the way up to 450ºF and expect your hair not to be damaged. Seriously. If you care enough to invest in your hair, heed the warning. That said, you should expect this best hair straightener to do a good job at lower temperatures and without gripping your hair too tightly. It’s absolutely perfect at maintaining Brazilian blowouts.

It takes less than a minute to achieve a great heat and there is an automatic shut-off which is a big help. Plus, there’s a huge range of temperatures with digital controls. Now, it is on the pricier side, but you get a solid warranty with that. However, you need to remember to register your flat iron in order to take advantage of it.


Heating speed: 45 seconds

Temperature and controls: Expect temperatures between 140 and 450ºF with the digital controls

Plates: Ceramic

Size: 1”

Shut-off: Automatic

Voltage: American only

Price: You can expect to pay $80 (against the MSRP of $100) - that does mean this is one of the more expensive ceramic models, but most users wouldn’t trade it for anything. 

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