Bio Ionic 10X Pro Styling Iron 1" - Nano Ionic - with Vibrating Plates The Bio Ionic 10X Pro Styling Iron 1 Inch is part of the Luxe Pro Styling Collection. Natural Volcanic Rock Minerals infused into the Bio Ionic Luxe Pro Styling Collection are uniquely refined to emit negative ions that drive tiny water molecules deep into the hair. Hair becomes hydrated and conditioned on the inside, while the outer cuticle layer lies flat and smooth, trapping moisture, giving it a vibrant shine.
In addition to a fast heat-up time and multiple temperature settings, the 9-foot cord and 360 swivel make for easier styling and prevents and tangling. You can also travel with this styling iron thanks to the dual voltage settings. Anti-slip edges and floating plates allow your hair to glide effortlessly between the plates, with no pulling or snagging which can be especially damaging for fine hair.
The Bio Ionic worked well on all of our testers’ hair, but it’s best on drier hair with a medium thickness. We spritzed testers’ hair with some keratin smoothing treatment, but the Bio Ionic did a lot of the heavy lifting to make our hair feel softer. The tool gets hot, but not too hot to grip, and it excels at creating the silky volume you want without making your hair pin-straight and flat. One tester put it perfectly: “[The Bio Ionic] is the Rumplestiltskin of hair straighteners. It’s turning straw into gold.”
GHD’s “styler” is permanently set to 365 degrees Fahrenheit, which the company says is the highest temperature hair can tolerate before it becomes damaged. As a person who went from a dark brunette to blonde highlights, I can vouch for its straightening power on processed hair. And though I don’t typically think of “comfort” as a flat iron necessity, the springy hinge that connects the two plates really did make it easier to clamp and glide the tool down my hair with minimal effort.

The Chi Elite Flat Iron has all the features Chi flat irons are known for. Like the Chi Air, it comes with a one-hour shut off and temperature dial to ensure you’re getting the correct heat. It also worked across all hair types and was specifically good on kinky, curly and thick hair. One of our testers even said it “work[ed] better than the Babyliss” and that styling her own hair with it was “not as uncomfortable.”
Featuring the same 1.25-inch plates CHI users have loved for years, the new CHI G2 Ceramic and Titanium Flat Iron make it easier to style longer hair! If you’ve ever tried to use a non-professional hair straightener on your hair, then you know just how quickly the process can become a literal pain! From hand strain to sore wrists and arms, most hair straighteners stick to old adage of “beauty is pain.”
The solution? Automatic shut off. That way, even if you do forget to turn off your hair straightener, you can be at ease knowing it will turn off on its own automatically. Not all hair straighteners come with this feature, and if you don't have an issue remembering to turn these types of things off it may not be necessary. Still, a little peace of mind and extra precaution never hurt.

We usually roll our eyes at oil-infused heat tools — but you can actually watch this oil being sucked right out of the refillable cartridge in the handle. When you press the iron closed over your strands, the oil vapor seeps through tiny holes to condition and straighten your hair. And don't worry fine-haired friends: It made our tester's hair silkier, but not like she'd dipped it in an oil vat.
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