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.

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.
Nearly 21,000 people gave this flat iron a five-star review on Amazon. If they factored price into that rating, then I agree. For less than $60 it’s pretty spectacular, but it doesn’t beat the fancier ones in terms of performance. The temperature automatically drops after 15 minutes of use. And while it’s easy to adjust that, it is also slightly inconvenient.
If you are interested in adding the benefits of keratin use into other aspects of your hair care routine, treat yourself to a keratin-rich hair mask once per week! There are dozens of fantastic keratin masks on the market to choose from (and even in your local drugstore!), but we love Naat’s Brazilian Keratin Intensive Hair Mask (which you can buy here from Amazon) for a consistent shine every time!
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Creative director of GLAMSQUAD Giovanni Vaccaro prefers this flat iron by Sedu. "The ceramic plates are really key to maintain the integrity and healthiness of the hair," he says. To get expertly straight hair, Vaccaro recommends using a boar-bristle brush to help mediate frizz, and that "the follow through is key" when moving the iron and comb completely from roots to tips.
This durable KIPOZI flat iron can be set anywhere between 170 and 450 degrees to suit any kind of thickness or texture, and its curved plate design makes it great for giving your hair some texture. The Nano-Titanium plates heat up quickly and lock in moisture, so hair looks hydrated, healthy, and sleek. It’s also got a compatible voltage for anywhere in the world.
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 plate material you choose can also make a big difference on your style results. Ceramic, titanium, and tourmaline are the most common terms you'll come across. Ceramic plates hold heat well and provide even heat distribution, preventing any hot spots on the plates can cause damage. Ceramic is especially effective for fine hair that can be especially vulnerable to heat damage. While many hair straighteners have ceramic coated plates, plates made entirely from this material are more effective, as this coating can wear off over time. Tourmaline is a gemstone, but when crushed and used to coat the plates of a hair straightener, it has properties and results similar to ceramic plates.
I've used this product once as soon as I purchased it. I read really good reviews about it and since I already own an xtava blowdrier, which I LOVE, I decided to give this flat iron a shot. It is amazing. It heats up very quickly and Its really good for thick natural hair, which is the kind of hair I have. I first washed my hair and the blow dried it with the xtava blow drier using a comb attachment on it, and then I used the flat iron. I've uploaded pictures from the before, during, and the after product. I recommend it for natural
Both inexpensive and high-end flat irons come with a wide range of features. If you plan to travel out of the country often, then a tool with dual voltage might be a good option. Or you might find that the Bio Ionic’s vibrating plates are something you can’t live without after trying. A long cord that swivels at the end of the handle to ensure ease of use might also be an important feature for you. Some features you might not need include pads to rest your flat iron or gloves to protect your hands — both accessories our testers didn’t think were necessary. When researching flat irons, make a list of your must-haves and make sure the one you choose includes your top features before purchasing.
The plates of the HSI Professional are made of solid ceramic that is infused with tourmaline. The combination allows for consistent temperature and gives hair a smooth finish. The wide range of heat settings, starting at 140 degrees Fahrenheit and going up to 450 degrees Fahrenheit, gives you more control over styling and makes this an ideal straightener for multiple hair types.
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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