Aside from ionic and infrared technologies the Bio Ionic Onepass Straightening Iron has something that is entirely new to me: silicon covered plates. They get the hair more in order when you’re straightening, save you a lot of time and reduce the amount of heat that you need. This one is great for African American hair, but I already selected the xtava Pro Satin for that because it’s more affordable.
The HSI 1st Gen Professional Ceramic Flat Iron is designed with tourmaline-infused ceramic plates, generating negative ions and allowing smaller water molecules to penetrate into the hair shaft to reduce frizz and static. Built for durability and lasting results, the floating plates give the flexibility to flip, curl or straighten your hair – all with a single iron.
It comes with the most advanced heating element in this industry. Using a digital display, you can adjust temperature from 280F to 450F. This means that you can use it to style fine or very fragile hair as well as very thick and coarse. This is the model that is often recommended for women that have hair that is hard to straighten and difficult to keep straight. So if lower heats do not work for you, use the highest setting, and get pin straight results, like glass.

Eight micro-sensors with HeatBalance technology are used to evenly distribute heat, regulating the temperature so that you spend less time applying heat. As a result, it takes less time to straighten hair, preventing it from damage when styling. Additionally, the 1-inch plate width is wide enough for any hair length, yet narrow enough to style your bangs.
Hair straighteners come in a lot of different sizes, and that can make it more difficult to decide which one is right for you. By learning about the type of hair you have, the kind of style you want, and the amount of heat you need, you can also figure out what the best size iron for your hair is. It does make a difference for the sake of speed as well as precision. It sounds like a lot of work, but you can figure out what’s right for you by clicking here.
Seemingly small details like cord length can make all the difference in the effectiveness of a beauty tool. A longer cord length is desirable here, giving you more freedom and versatility depending on the power outlet situation in your home or your hotel if you're traveling. A cord with 360 swivel capabilities is also a plus. You'll be moving your hair straightener all around your head as you style, and a rotating cord will keep it from getting tangled.

At first, the Bio Ionic 10X Pro Styling Iron’s vibrating plates seemed gimmicky. But we were surprised at how effective they were when styling our hair. Our testers found the vibrating plates made straightening their hair go faster with virtually zero snagging. Engaging the vibration was also simple — click the power button and tap the plates together and you’re ready to go.

We loved the Bio Ionic’s user-friendly design. Two of our favorite features are its bright digital temperature control and the instructions stamped directly onto the tool. It also feels natural in the hand, and its matte finish provides a slight grippiness, but doesn’t pull at the hair when styling. Plus, the tool sports a uniquely shaped plate that’s curved at the tip and makes it really easy to get close to the scalp. One tester who is new to using flat irons said the Bio Ionic felt intuitive and even encouraged her to try harder styles, like creating curls and waves.


T3’s white and rose gold flat iron seems too pretty to reliably function, but hey, sometimes miracles happen. There are four temperature settings ranging from 260 to 410 degrees, and the tool heats up in about a minute. Its ceramic plates are infused with tourmaline, a mineral said to make hair extra smooth because it emits negatively-charged ions. There’s no scientific evidence to support this, but my unscientific bathroom study found that this flat iron does indeed make my hair look shinier.
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