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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.
One of the biggest problems you will face when using a heated hair styling tool is overheating. We’ve all been there: you’re casually straightening your hair when a particularly funny scene comes up on the show you have playing in the background. After a solid minute or two of laughter, you realize (in utter horror!) that your poor hair has been sandwiched in between a couple of hot plates the entire time.
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.”

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Negative ions have been a longtime fan favorite in the hair care industry, and it is no surprise that this same technology would appear in our top picks for the best hair straightener. Negative ions have been found to reduce static and frizz while locking in moisture, and the same goes for your hair when you use the CHI Air Expert Classic Tourmaline Ceramic Flat Iron!
Dylan also loves this Karmin iron. "The plates are coated in tourmaline which helps for an easy glide," he says. Fighting frizz with infrared ions, Dylan suggests that it "makes this iron better for super coarse hair." Bonus points: it also has different voltage settings for international use. The jetsetter in you will be thankful as you globetrot glamorously.
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.”
According to hair pro Christian Wood, if you want to make sure your hair stays in the place, use the GHD gold mini styler. “I prefer a small straightener that I can get really close to the roots to remove stubborn kinks and cow licks,” says Wood. The small straightener trick is probably how he nails the beauty looks of Tessa Thompson, Emily Ratajkowski, Rosie Huntington, and Olivia Munn.
When we first took the Babyliss out of its box, we were impressed by its super thin design. And when we put it to the test, the tool lived up to our expectations. It felt light, like the Chi Air, and manageable when gliding through hair. Unlike the HSI which felt rickety and bulky, the Babyliss’ design was sleek and professional. It wins as the flat iron we’d expect to see in a high-end hair salon.
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!
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.
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.
For such a high-end flat iron, we were disappointed that the Babyliss doesn’t have a precise temperature display like the Bio Ionic. Our testers were confused by the settings, which had numbers going up to 50 vs. actual temperatures. The numbers represent a range, but you have to look through the instruction manual to figure out what that is. One tester summed it up perfectly: “I don’t want to read an instruction manual to use a hair straightener.”
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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.”

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.
The BaByliss Pro Nano Titanium Straightening Iron really is the Baskin Robins of hair straighteners, making it the perfect choice for anyone that wants to straighten their hair quickly. Whether you have naturally short hair and opt for extensions on occasion or you just chopped off your do’ into a new pixie cut, you will have a hard time not finding the perfect heat setting for your hair so many choices!
If your hair is plagued by tangles and knots on a regular basis (even in between straightening!), try switching your hairbrush out for a wide-toothed comb! The added space in between the teeth gently separately knots and tangles without the painful “Ouch!” with each stroke. If that still isn’t enough to tame your stubborn tresses, try a wet brush! These brushes are specially designed to work through knotted, wet hair without any tugging or pulling.
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.”
I started this site after I made the decision to get a new hair straightener. I am not a novice with irons by any means, and I’ve had just about every kind imaginable except for some of the newest options. When I realized how far the industry had come in the last couple of years, I decided it was time to try something new. A good flat iron can last for years, as long as you look after it and make sure you buy one that’s robust enough to take what you put it through. By doing your homework up front, you can make sure you not only get the right straightener for your locks, but you don’t end up spending an inordinate amount of money on something that doesn’t work for you. Believe me, I’ve been there!

“I’m a licensed hairdresser and I’ve used many hair straighteners, including Chi and Paul Mitchell. They work, but my hair is so thick that it takes me at least 30 to 40 minutes to properly smooth my hair. This is the absolute best hair straightener I have ever used. It straightened my hair in ten minutes (no joke). I’m extremely pleased and shocked. Looking to purchase a second one to have on hand for the future.”
For those with thick hair, the idea of "quick styling" often feels like an impossible dream. It's usually easier to use the "throw it up and go" technique to get out the door in time. However, straight, sleek hair doesn't have to be a luxury reserved for those with fine hair, especially when you have a styling tool designed to tackle even the thickest, curliest hair like the Xtava Pro.
Once you have purchased your new hair straightener and mastered the multitude of ways you can put it to good use, the only thing left to do is take care of it, so it lasts for years to come! Just like any luxury beauty tool, you will want to care for your hair straightener to extend its longevity and prevent corrosion (which can actually leak into your flowing locks…yuck!). Our top tips for caring for and cleaning your new hair straightener include:
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.
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

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.
If you don’t have much time to hang around and read through reviews, you don’t have to. I have a list with best picks as well as a “handy dandy” table that can help you quickly sort through the options I’ve included on my site. When you’re ready, just hit “add to cart” and you can get on with your day. If you fancy that cup of coffee after all, you can click through the different options and get a more detailed picture of any model you’re interested in. No matter how you do it, all the information is designed to be quick and helpful.
The type of heat you use to style your hair makes a big difference in how healthy it will be. Our Xtava Pro-Satin Infrared Ceramic Flat Iron for Hair uses infrared heating technology, which heats hair from the inside out. Infrared technology is a game-changer for styling your hair because it allows heat to penetrate directly into the inner part of the hair strand, not just the outside layer. Infrared heating to the middle of the hair strand provides a more effective heat for styling and decreases damage to the outside of your hair. Infrared technology also stimulates negative ions in your hair that draw oils from the hair shaft to the surface; this helps lock in moisture and lock in your look, even in humid weather. Better heat = better hair health. Guess that’s not much of a secret after all, is it?
If your hair is plagued by tangles and knots on a regular basis (even in between straightening!), try switching your hairbrush out for a wide-toothed comb! The added space in between the teeth gently separately knots and tangles without the painful “Ouch!” with each stroke. If that still isn’t enough to tame your stubborn tresses, try a wet brush! These brushes are specially designed to work through knotted, wet hair without any tugging or pulling.
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