Unlike the Bio Ionic’s handy digital temperature control, the Chi Air uses a small dial on the side of the tool that’s harder to read. The dial’s placement makes it not only more difficult to get an accurate reading, but also more prone to being hit by your hand and switching to a new temperature. That being said, most of our testers didn’t mind this minor inconvenience since they don’t expect to change the tool’s temperature often.
A lot of hair straighteners will boast that their nano-ceramic like this is a good thing. In reality, this means that they’re made up of a cheap filler material (that will not heat as evenly or remain as durable as true ceramic) which is coated with a thing outer ceramic layer. If you want a flat iron that’s safe for natural hair, make sure you go 100% ceramic, or better yet, solid ceramic infused with tourmaline or titanium.
The plates in this techy tool house an internal microchip that constantly measures and maintains an even temperature. With no random hot or cold spots, you'll get smoother, straighter, strands in fewer passes. (Spoiler alert: Fewer passes equal less damage). Adjustable temperature settings — from 260 to 410 degrees — make this ideal for any and every hair texture.