Bio Ionic One Pass Flat Iron, Hair Straightener is the fastest ever! Far Infrared allows for quick styling without damage. Bio Ceramic Heaters maintain constant heat. The OnePass Iron shows a true break-through in flat iron technology. It straightens hair in half the time compared to other irons. This is the professional’s #1 choice in irons! Silicone Speed Strips for straightening and shine Instant heat, up to 400°F Instant recovery Nano-Ionic™ Mineral fused to cushion plates High levels of negative ions Far infrared energy for silky smooth hair Bio Ceramic 5 Second heaters Advanced heat controller 10 feet swivel cord
The question is, does it live up to all the hype? There are more than 30,000 reviews on Amazon, 70% of these reviews give a 5-star rating, and 14% give a 4-star rating. According to the numbers, the HSI Professional truly is a high-quality product that is well-deserving of the attention it's been given. Buyers love how quickly the HSI Professional heats up, what it does for their hair, and how easy it is to use— even on short hair.
Ask any seasoned hair stylist for a flat iron recommendation, and you will hear the same brand time and time again: CHI. Known the world over as a leader in hair care and styling, CHI is your go-to name for salon results at home. While CHI offers a variety of designs (and fun colors!) to choose from, the brand’s G2 Ceramic and Titanium model is what caught our eye when researching the best hair straightener. This hair straightener is packed with high-tech features and an upgraded, ergonomic design for the shiniest and straightest do’ you’ve ever seen!
Ceramic and electrical straighteners were introduced later, allowing adjustment of heat settings and straightener size. A ceramic hair straightener brush was patented in 2013.[6] Sharon Rabi released the first straightening brush in 2015 under the DAFNI brand name. The ceramic straightening brush has a larger surface area than a traditional flat iron.
I ABSOLUTELY LOVE this hair straightener/curler. I was looking into buying the new TYME Iron that came out but found this one that was so similar and more than half the price. After seeing some reviews, I trusted it enough to purchase it. Got it in today and curled my hair (WITH my clip-on hair extensions) and it not only curls/straightens SO pretty but leaves hair nice and soft and silky AND therefore made my extensions blend in so so seamlessly. If you're looking for a new straightener/curler, I absolutely recommend!

If you are unsure what exactly your hair type is (or if it has changed over the years, which happens more often than you’d think!), check out this incredible overview by the hair professionals at Redken! Don’t stress if you have combination hair (i.e., fine and curly or thin and straight) either; we recommend choosing a hair straightener based on your biggest hair complaint and focusing on that problem first. So, if your curls are driving your nuts, you will want to select a hair straightener with higher temperatures, thin hair needs moisture, etc. You’ll find that your entire hair type can usually benefit from the extra TLC!
If you're looking for style versatility, NuMe hair straighteners are designed to do it all and allow for some creativity too. Each authentically crafted NuMe hair straightener offers only the highest quality materials, including 100 percent pure tourmaline ceramic, stone ceramic, and titanium plates. With beveled edges and floating plate design, you'll never snag your locks or be confined to one style. Create fashionable curls, crimped looks, relaxed beach waves and so much more. Unlock the possibilities with your NuMe hair straightener. 
The digital interface accurately displays the fully adjustable temperature setting from 170 degrees to 450 degrees Fahrenheit, providing optimal performance for any hair type. The floating plates with curved edges continuously adjust the tension and angle of the plates to avoid snagging your hair so that you have full flexibility when creating sleek, wavy or curly styles.
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.
This feature is particularly beneficial for users with naturally wavy or curly hair, which can have a tendency to easily snag in hair styling tools. This floating design, combined with the heat sensor, also ensures that your gorgeous curls won’t become permanently damaged just because you decide to straighten things out a bit for an evening or two. After all, those curls are coveted by beauty pros the world over, and you never want to damage them just because of a styling trend!

Ever since the early 2000’s when the planet collectively decided that straightening our hair to death was a good idea, beauty companies have been searching for a way to achieve beautiful and natural-looking straight looks without frying or unnecessary damage. From ceramic plates to protective sprays and everything in between, we have been desperately searching for some way, any way, to show off a straight head of hair that isn’t entirely made of straw.
Weighing just over 1 pound, the BaByliss Pro Nano Titanium Straightening Iron is the lightest hair straightener on our list of the best flat irons! This lightweight design makes it a great choice for users that are constantly on the go, and even when traveling. In fact, this model might make a wonderful “second straightener” for someone that wants to keep their locks looking fine on the road without toting around their heavier at-home hair straightener!
Those with fine hair can keep the straightener at a lower temperature, while those with thick hair can increase the temperature to ensure they'll walk away with the same smooth results. No matter your hair type, the floating plate design and the curved edges of the plates themselves prevent any snagging or damage so your hair will glide through smoothly.
This straightener is a miracle worker! African-American women with extremely coarse hair consider this tool a godsend. Thanks to 5-inch extended plates, faster and more efficient straightening is finally possible, especially for those mornings when you’re in a rush. If you want a hair tool that can help you with styling details, this BaByliss PRO is a very good solution.
Heat protectants contain ingredients that coat hair and slow down heat induction. Janine Jarman says, “Blow dry your hair properly; use a heat protectant product; and with the right iron, you should not have to make a bunch of passes to get the results you want.” We used TRESemmé Expert Selection Heat Protection Spray, Keratin Smooth. Most of our testers liked how it worked on their hair and felt a noticeable difference when using it. Our tester with kinky hair didn’t use the product because she knew it wouldn’t work on her hair. Instead, she recommends using an oil (like an Argan oil) or a hair grease to add moisture to the hair, which makes it easier to straighten.
So, when it comes to hair care, it is no surprise that the healing benefits of infrared technology would make their way into the industry sooner or later! The far infrared technology in the CHI Air Expert Classic Tourmaline Ceramic Flat Iron leaves your hair looking and feeling smoother and silkier than ever before, while helping to restore your strands to their naturally strong and beautiful thickness.
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.”

Though it looks high tech with an LCD screen, this budget-friendly straightener has impressed Amazon reviewers everywhere. "I have very thick curly/wavy hair and in a matter of 45 minutes my hair was the straightest I’ve ever been able to get it by doing my hair on my own," wrote one reviewer from Florida, who said her straight hair managed to endure the state's humid climate.
This lesser-known brand made a great impression when it was available on Amazon (you can now buy it at TerresaBeauty.com), where the majority of reviewers gave it five stars. "It allows my hair to glide so smoothly through the plates, never snagging it," says one shopper. "I can straighten or curl with this straightener and it works great," says another.
That’s what is so great about hair straighteners: these devices can give you salon-worthy curls or celebrity-inspired straight hair that can change just as easily as your mood if you’d like! So, the next time you find yourself wishing for something you don’t naturally have, try using your hair straightener to bring out the best of your natural beauty. Who knows, you just might love a change!
EDITOR’S CHOICE: CHI has and always will be a powerhouse brand in the hair straightener industry, and the company’s new G2 Ceramic and Titanium Flat Iron is no exception! Packed with ceramic and titanium technology, this hair straightener was designed to give you silky, shiny styles without snags. We also love its easy-to-read, color-coded temperature settings, so you know the temperatures that you are using at any given time!

Unlike the plain Jane ceramic plates of most hair straighteners, the tourmaline-infused ceramic plates in the CHI Air Expert Classic Tourmaline Ceramic Flat Iron are designed to keep your hair healthy during styling. Specifically, the tourmaline helps to more evenly distribute the heat during use which, in turn, creates a higher number of negative ions for shinier and healthier looking hair with each use. This reduces the static electricity created, meaning you get a sleeker, smoother style.
If being limited to only a handful of temperature settings isn’t really your cup of tea, look no further than the BaByliss Pro Nano Titanium Straightening Iron! This lightweight flat iron features a whopping 50 heat settings for hair types of all shapes, styles, textures, and colors making it one of the most versatile hair straighteners on our list.
This feature is particularly beneficial for users with naturally wavy or curly hair, which can have a tendency to easily snag in hair styling tools. This floating design, combined with the heat sensor, also ensures that your gorgeous curls won’t become permanently damaged just because you decide to straighten things out a bit for an evening or two. After all, those curls are coveted by beauty pros the world over, and you never want to damage them just because of a styling trend!
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