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.”
Automatic shutoff isn’t a feature we included in our criteria since people have varying opinions about it, but we liked that the Chi Elite has this. Especially for new users who might forget to turn off their flat irons. Like the Chi Air, the Chi Elite will shut off after one hour. However, if you’re working with kinky hair, auto shutoff may be a problem. Traditionally this hair type will take longer to straighten due to detangling and the fragility of the hair.
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This styling iron has 1-inch plates, allowing it to do more than just straighten. It can also curl, flip, and be used to add volume if your hair tends to fall flat. It heats up in under 30 seconds so you can start styling almost right away, and there are a wide range of temperature settings from 250 degrees to 460 degrees Fahrenheit. While the high-temperature options make this straightener ideal for other hair types, too, if you do have fine hair you'll want to keep this in the lower temperature range.
Bio Ionic OnePass 1" Nano-Ceramic Straightening Iron (Black) 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
This flat iron is amazing! I have natural curly hair, and I live where it's humid a good majority of the year. This flat iron is good enough to keep my hair straight for a few days. That's with using products like hairspray, dry shampoo etc. I've been using this for about a month, 3-4 days a week, and haven't noticed any heat damage. That's always a plus. I'd say this was a good buy!
Straightening irons, straighteners, or flat irons work by breaking down the positive hydrogen bonds found in the hair's cortex, which cause hair to open, bend and become curly. Once the bonds are broken, hair is prevented from holding its original, natural form, though the hydrogen bonds can re-form if exposed to moisture.[2] Straightening irons use mainly ceramic material for their plates. Low-end straighteners use a single layer of ceramic coating on the plates, whereas high-end straighteners use multiple layers or even 100% ceramic material. Some straightening irons are fitted with an automatic shut off feature to prevent fire accidents.
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 Babyliss gets hot quickly and moves through hair fast. This is thanks to its thin, lightweight design and the fact that it stays consistently hot. Our testers were amazed that it passed through their hair so quickly and left it smooth without feeling damaged or fried. Plus, when being styled by someone else, our testers said it didn’t snag their hair.
Early hair straightening systems relied on harsh chemicals that tended to damage the hair. In the 1870s, the French hairdresser Marcel Grateau introduced heated metal hair care implements such as hot combs to straighten hair. Madame C.J. Walker used combs with wider teeth and popularized their use together with her system of chemical scalp preparation and straightening lotions.[3] Her mentor Annie Malone is sometimes said to have patented the hot comb.[4] Heated metal implements slide more easily through the hair, reducing damage and dryness. Women in the 1960s sometimes used clothing irons to straighten their hair.
Be sure to protect your hair against heat damage with Xtava’s Heat Protectant Spray every time you style. Not only does our heat protectant coat your hair with a lightweight layer of protection, but it also repairs hair from the inside-out with broccoli seed and Brazilian pequi oils to replenish moisture, restore shine, and infuse essential nutrients.
Despite these downsides, the HSI Professional comes with plenty of positives, including extras not often found with other hair straighteners. Along with the straightener, you'll receive a carrying case, a heat-resistant glove for easier hair styling, a style guide, and a travel-size argan oil leave-in hair treatment serum to smooth and protect your hair. This is more than most high-end hair straighteners come with, all for a fraction of the price.

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!


With a maximum temperature of 450° F, the BaByliss Pro Nano Titanium Straightening Iron can really pack a punch despite its otherwise small frame. One thing to note though: these heat settings are not pre-set like the CHI G2 hair straightener we also reviewed, and you will need to play around with them to find the right temperature for your hair. This shouldn’t be a problem if you have a Saturday afternoon or two to kill, but may not be ideal for users that are looking for a flat iron with pre-recorded settings.


This lightweight mini straightener is easy to use and great if you love to travel and need to take your tools with you. It's so tiny and portable that it can fit into a carry-on bag, and it heats and is ready to use in only 30 seconds. It packs serious punch, though — its 100% ceramic plates generate six times more negative ions than regular irons for less heat damage and frizz.
“I bought the HSI titanium tourmaline ionic flat iron and I was so impressed with it. It glides so smoothly down the hair without any tugs! The digital display screen lets me adjust the temperature without any problems, it heats up fast, and I love that it comes with a pretty purple pouch, glove, and argan-oil serum. I also own the digital HSI ceramic ionic flat iron from 2013, and it’s still going strong, but I do like the titanium iron better, and I see myself using for it for years to come. It leaves my hair shiny and soft!”
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.

There is a slide at the base which holds the device from opening all the way (easier for storing) but if you slide the piece it allows the flat iron to open all the way. The instructions inside the box don't explain this part, so at first I thought it didn't open very far, but once I figured this out, it became a breeze to use. Speaking of the instructions, they are listed in English, Spanish, French, and German. (I think... I don't speak/read all of those languages, but I believe that's correct.)
Thankfully, we’ve learned a lot about hair care and preserving your hair’s natural integrity while styling. However, this wasn’t always the case. If you ever had a perm done in the 80’s or teased your hair to holy heaven in the 90’s, chances are pretty good that your hair has endured a bit of damage. The same can be said if you color your hair on a regular basis or recently went from your natural brunette color to a bright platinum blonde. No matter how the damage was caused, there are certain features you will want to shop for when selecting the ideal hair straightener for your course hair type:

Curling irons, also known as curling tongs, create waves or curls in hair using a variety of different methods. There are many different types of modern curling irons, which can vary by diameter, material, and shape of barrel and the type of handle. The barrel's diameter can be anywhere from .5 in (1.3 cm) to 2 in (5.1 cm). Smaller barrels typically create spiral curls or ringlets, and larger barrels are used to give shape and volume to a hairstyle.


Most of the hair straighteners we reviewed heat up in under a minute, but the Cloud Nine Original Flat Iron has to be one of the fastest on the market! In as little as 20 seconds, this hair straightener transforms from cool to hot, hot, hot! With this model, there is no need to wait around for your hair straightener to warm up, which means you spend less time getting ready in the morning and more time getting on with your day.

Sure, the drugstore flat iron you used on its highest setting back in the day was clunky and had a tendency to fry your hair if you glanced away for more than a second, and okay fine, your mom probably told you that you looked a little “emo” from time to time. Luckily, those days are long gone and hair straighteners have truly come a long way since the days of The Jersey Shore.
"Unite Pro Tools Flat Iron is an easy-to-use, low maintenance iron," says Chris Dylan. Dylan works with Kylie Jenner so finding an easy-to-use tool is a must when you’re helping someone go from a platinum blonde bob to jet black floor length extensions. in a span of a week. He notes that with a fast-heating iron and beveled edges, it creates soft waves and has a great temperature gauge that keeps you firmly in control of the heat.

Celebrity hair stylist Priscilla Valles’s go-to straightner is the classic GHD 1-inch straightener. “I start in the nape and bring down small sections, one row at a time and I use a GHD flat Iron with a comb in the other hand,” says Valles. “I place the comb in front of the iron while ironing at the same time in a slow motion all the way down. Never stopping cause that will cause dents in the hair. At the end a dime size of ouai rose from top to bottom just to add some shine and control any fly aways!”


When you feel like it’s time for straight, shiny locks, we’ve got your back. Our flat irons are so well-designed and powerful they can straighten even the curliest of hair. Our selection of hair straighteners also come in a variety of sizes, colors and shapes, and some even include thermal bags or travel containers so the flat iron is protected. Many of our irons also include a warranty to guarantee that the electronic components are functional for years to come. Depending on how long or short your hair is, or the type of styles you seek, you will need to select a style that best suits your styling needs. For instance, a 1.5-inch iron works best on medium to long hair, while 1-inch irons are typically made for shorter hair.
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.
As you discover the beauty of straight styles, you'll want to find the best hair straightener that won't compromise your hair and caters to your hair type. Achieve optimal results through the reliable performance, quality, and design of NuMe professional styling tools. The gentle heating of far infrared technology and negative ion-producing, 100 percent pure, tourmaline ceramic plates reveal the conscious and authentic design of NuMe hair straighteners. 
By-and-large, most people with natural hair have some variation of type 3 or type 4 – which is exactly why low-end hair straighteners can be so dangerous. More curly natural black hair has a tendency to be more porous than other hair types. As a result, it can lose moisture easily and become damaged. With the wrong flat iron, this can lead to split ends and breakage after just a single use.
With ceramic tourmaline technology, floating plates, and an extremely wide range of temperatures, the Berta Professional tourmaline ceramic flat iron is great for this type of job. It’s also got an elongated body so hair doesn’t slip off the end while you’re styling, and reviewers are saying things like, “I got the hair straightener to curl my hair and it does a great job. My hair never holds a curl but this flat iron did the trick.”
To solve this problem, CHI’s new G2 Ceramic and Titanium Flat Iron features a digital temperature display located right on the outside of the handle. No more knobs or dials, just buttons and electronic displays, and it is intuitive to use! This feature is great for maintaining an exact temperature during styling and also allows users of varying hair types to experience the professional-grade results CHI hair straighteners have delivered for years without the worry of damage or frying!
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