Best Flat Iron For Curly Hair

Best Flat Iron For Curly Hair 2021 – The Ultimate Buyer’s Guide

Today everyone wants to change their look, but without having beautiful hair you can’t make your look more attractive. On the other hand, If you have curly hair and finding the best flat iron, then you have arrived in the right place.

Here, we will let you know about the best flat irons to change your curly hair into silky, straight strands. We will also explain the various problems you can fight and how a flat iron can resolve them with its excellent features.

So, here we will talk about curly hair and the best flat irons to straighten them successfully:

A Quick Overview

After some analysis and discussions, we have selected the best flat irons for curly hair that is accessible in the market now. But before jump into the detailed information of each, let’s have a look at our suggested products:

Best Flat Iron Buying Guide for Curly Hair

Image Product Feature Price
Top Pick


1. HSI Professional Ceramic Tourmaline Ionic Hair Straightener


Our Opinion: For Salon Quality Straightening Results Check On Amazon

2. Solano Sleekheat450 Professional Hair Straightener


Our Opinion: an Expensive Yet Effective Choice Check On Amazon

3. CHI Expert Classic Flat Iron


Our Opinion: Innovative Technology Supported Flat Iron Check On Amazon

4. Infiniti Pro by Conair Tourmaline Ceramic Hair Straightener


Our Opinion: an Affordable Flat Iron Check On Amazon

5. Bio Ionic Onepass Flat Iron


Our Opinion: a Professional Grade Flat Iron Check On Amazon

6. Hair Straightener by Vland Pro Flat Iron


This VLAND flat iron is a perfect straightening tool with some great features to make your hair’s straightening process smooth. Check On Amazon

7. Pro Beauty Tools Xl Copper Digital 1 Inch Flat Iron


There is no uncertainty that this flat iron from Pro Beauty Tools is the best tool to straighten hair. Check On Amazon


What is Curly Hair?

Curly hair will be defined as hair strands with flatter or oval-shaped follicle that makes hair lengthy.

Curly strands will make sure that your hair locks have more shape and definition for a complete appearance.

People with this kind of curly hair are born with it, particularly due to genetics.

Approximately 85 to 95 percent of people with curls in their hair obtained them hereditably(1). But, how does hair become curly?

Hair strands make curly because the construction blocks of hair, keratin, and proteins, form disulfide bonds in the hair follicle that gives the hair proteins to get the follicles flatter, oval-shaped, and succeed in curly hair.

Does Curly Hair Always Mean Thick Hair?

It’s not sensible to conclude that curly hair always indicates thick hair. Specifically, fineness, thickness, and coarseness are various forms of hair.

Whereas curly, natural, or straight are hair kinds.

Moreover, each hair kind can have both textures, which means curly hair will be fine or thick texture relies on the hair structure.

Types of Curly Hair

Although curly hair itself is a hair variety, it also has sub-categories. There are some sub-categories of curly hair which you should understand to manage your own hair type.

Let’s discuss the various kinds of curly hair so that you don’t have a problem finding your own:

  • 3A – The 3A kind of hair has big, loose curls that follow a certain S-shaped design. These hair strands lead to be fixed and springy, and each curl is as thick as a part of the sidewalk block. People with 3A kind of curls have size and height in the roots which makes them look more abundant and fluffy.
  • 3B – 3B hair kind has a coarse texture and is decorated with curls that are a few more tightly wound. These ringlets have a circumference that is as broad as a marker pen which makes the 3B tresses seem more thick and full.
  • 3C – The curls in 3C kinds of hair are oily and usually identified as the corkscrew curls. These tightly packed curls have a circumference of a pencil and ensure natural size. Even though 3C hair experiences most size related to other kinds of curly hair, they will be much finer than the other two types.

How to Straighten Curly Hair?

The most important thing to choose the right styling tools because if you do not pick the right tool then other tools will take much time to straighten your curl, so it may be just time-consuming. There are numerous tools and techniques to temporarily straighten your curly hair, some of them are here:

  • Applying a good quality flat iron
  • Straightening with a hairdryer brush
  • Utilizing a paddle hair straightening brush
  • Placing on some natural straightening masks; like milk and honey or banana and milk mask.

Although we have said a few straightening curly hair methods, the most efficient way to straighten your curly locks is by utilizing a flat or straightening iron.

With the good quality flat iron, you can straighten your curly hair locks very easily and fast, at the same time, just need to make sure that your hair is not burned while the styling process.

Nevertheless, keep in mind, even though there are many kinds of curly hair, flat iron companies do not make straighteners according to the subcategories of curly hair.

Instead, they include features that resolve the usual problems faced by all curly hair people.

How to Pick the Best Flat Iron for Curly Hair?

More usually than not, curly hair locks can be uncomfortable to maintain and style.

Hence you should be picky and precise about your demands when buying a straightening iron for your curly hair.

There are some problems that people with curly hair deal with while styling their hair regularly.

Therefore, we have recognized the issues and estimated the perfect solution utilizing a flat iron to get silky, slender straight hair.

How to Manage the Frizziness, Hair Tangle, and Knots of Curly Hair With a Flat Iron?


Curly hair is one of the frizziest kinds of hair you can see.

This hair is naturally dry and lacks too much moisture. The spiral “S” shape of the curls works as a block that prevents the even distribution of natural oils and nourishment(of the scalp) completely your hair, which outcome in causing them frizzy.

Additionally, one of the biggest matters of people with curly hair is getting rid of the unnecessary frizz and flyaways from their hair all time they straighten it.

Getting heat from the iron can be more stripes out the outstanding amount of moisture in the hair, giving them frizzier.


Another irritating issue that people with curly hair face while straightening their hair is confusion and knots.

This may get dirty as the hair strands cling to one another, making it hard to brush through the hair, let just straighten them.

Tangle and knots also occur because of a reduction in the moisture and nourishment in the hair that roughens up the skins (the outside layer).

So making hair strands attach, making them hard to style.


The most reliable way to fight all these issues while straightening curly hair is to apply a flat iron that adds a built-in ionic generator.

Anionic generator applies revolutionary ionic technology that delivers negative ions to curly hair that immerse the balance between the negative and positive ions of hair.

This balance is important because it offsets the static, frizz-causing condition of your curly hair.

Further, the negative ions assist lock in hair moisture and smooth the cuticles to overcome frizz and tangle further and it will make curly hair more straight, silky, and smooth.

So, ionic technology has a feature for a straightener for curly manes.

Another technology that flat iron for curly hair will have infrared emission technology.

The power from infrared emissions filters each curly hair strand to straighten them from the center in the least amount of time possible.

Moreover, as you need less time to straighten your curly manes, infrared emissions guarantee that your curly locks will be less clear to heat.

Ways to Reduce Breakage and Damage Using a Flat Iron


As curly hair needs moisture, they are more likely to damage and wreckage. A relatively big amount of heat throughout your straightening session can burn and destroy your hair strands from the center.

Further, the snagging from a straightening iron plate can make more breakage of your curly locks.


If you want to reduce damage and no hair breakage while you straighten your curly hair, you will have to buy a straightening iron that has plates manufactured from pure ceramic, ceramic tourmaline, porcelain ceramic, or Nanoceramic.

We particularly insist on the ceramic infused stuff because the ceramic mixture plates ensure the heating.

The straightener plates are constantly heated with a subtle amount of heat that moves every nook and cranny of your curls for an excellent straightening outcome.

Ceramic infused plates also provide you the soft styling surface to reduce the risk of any snagging and tugging of your curly hair.

How to manage Too Much Volume Using a Flat Iron?


Everybody wishes to have more volume in their hair, but people with curly hair, not so much.

That’s happened, by nature, curly hair has plenty of volume in its roots and body, which delivers them voluminous and bouncy, and usually uncontrollable.


Although there is no particular feature that could decrease the extra volume of curly hair, the full straightening process can scale down the hair volume while making them smooth and more straight.

Therefore, it’s of the utmost quality that you may purchase a quality flat iron machine that doesn’t create any damage to your curly manes when you will straighten them.

Suitable Temperature Settings

The temperature settings are essential for curly hair because a comparatively low heat cannot straighten curly hair locks accurately.

Whereas there is a possibility of burning your hair when you will set the temperature too high.

Hence, hair specialists think that a temperature range should be between 390° F to 450° F is ideal to use.

Applying these heat settings, you can straighten your curly locks flat with a low risk of making any heat damage.

Therefore, you have to look for a flat iron that has various temperature settings.

Plus, you have to check the temperature controls; experts recommend that an LCD screen with “+” “-“ controls is always helpful for ease of use.

But, you can also think of purchasing a flat iron with a dial, knob, or rheostat control with labeled heat settings so that you can easily select the accurate temperature you require.

Plate Type and Plate Width

It’s a real that curly hair doesn’t grow too long lengths, and therefore, a plate size of 1 inch or 1 ¼ inch is excellent for straightening curly hair locks.

A broad plate than these sizes is fit for long hair and won’t do any fairness to shoulder length or above the waist-length hair.

Further, with a smaller plate, you can easily hit the roots for more beneficial straightening outcomes.

In extension to the plate width, the plate set also matters when straightening curly hair locks.

Floating plates are always better to apply on curly hair locks since they limit damage, snagging, or kinks in your hair.

Floating plates make this by always utilizing the correct amount of pressure to fine hair strands while getting close sufficient to transfer heat better.

Top Best Flat Irons for Curly Hair

Curly hair really needs special care and consideration as this kind of hair is quite sensitive and amazingly prone to heat and damage.

In straight, To straighten such sensitive hair, you just require a flat iron that can straighten your hair locks fast and accurately while preserving your hair from any kind of heat burns and damage.

We mentioned before that we have picked a few that we consider to be the best at styling your curly hair.

Before explaining our best picks in detail, let’s compare our picked flat irons and some of their market competitors.

Comparison Table For Our Top 3

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1. HSI Professional Ceramic Tourmaline Ionic Hair Straightener


Additional Features
  • HSI covered an argan oil hair treatment with the tool
  • Dual voltage feature
  • Conveniently fixed power switch
  • 6 foot 360 degrees, tangle-free swivel cord
  • Adds a heat-resistant glove
  • Silk drawstring pouch for simple storage
  • 1 Year Limited Warranty duration

Our Opinion: For Salon Quality Straightening Results

Although this HSI flat iron gives professional-caliber straightening services at a quite cheap price, it is not the major cause we this tool as our #1 option.

This straightener got the top position because it covers all the features we see in a straightening machine for curly hair and then some.

Firstly, this professional-grade flat iron includes both ionic technology and infrared emission.

That not only provide straight hair even the most stubborn curly locks easily by entering the heat power to each of the hair shafts but also makes sure that your hair is completely protected from heat loss.

The ionic technology is also liable for performing straightened hair silky, smooth, and free from irritating frizz, flyaways, and tangles.

Additionally, the tourmaline-infused solid ceramic plates of this flat iron have more advantages of both this stuff.

Therefore, ensuring that your curly hair strands don’t hurt from hot spots throughout the styling method by distributing heat evenly during the plates.

Further, the 8 HeatBalance® micro-sensors (4 on each plate) included by HIS in the iron plates more ensure that the heat is equally distributed by setting the tool’s temperature.

So, demanding fewer passes to straighten your hair well and reducing the amount of time shown to high heat.

In addition to giving an excellent amount of heat, this HSI professional straightener’s floating plates also present excellent flexibility to flip, curl, or straighten curly hair.

Finally, these flat iron companies made the temperature selection setting really simple by combining a dial button with detailed labeling of the temperature levels.

These levels range from 140° F to 450° F.

2. Solano Sleekheat450 Professional Hair Straightener


Additional Features
  • At 12 ounces, this tool is quite lightweight
  • The swivel cord ensures that the cord continues tangle-free
  • Ergonomically designed handles ensure a powerful, non-slip grip
  • Slide on/off switch to include protection
  • Cool touch tips for easy usage of the tool
  • 2-year limited warranty to ensure the stability of the product

Our Opinion: an Expensive Yet Effective Choice

If you are finding a great quality hair straightening tool, then this Solano Sleekheat450 is the best option for you.

This hair styler is an alternate option to our top choice as both these flat irons have related features and are great at straightening curly hair.

Nevertheless, despite the more expensive price point, Solano made sure that you will like the best value for your money by attaching some excellent features to this Sleekheat450.

Firstly, the ceramic tourmaline built floating plates of this Solano flat iron is available with 4 sided beveled edges.

These edges give styling versatility to the user and will make sure that the plates glide through the hair stand easily.

See, beveled edges mean that the straightener plates are available with tapered sides that preserve your curly hair from damage while also blocking boundary lines and wrinkles in your hair.

Further, with its curved edged plates, you will not only enjoy softer straightened locks but can also produce big curls and voluminous waves.

Another excellent feature of this flat iron is its temperature settings and power system.

This hair styling tool covers a rheostat dial that has labeling of all heat levels, beginning from 170° F up to 450° F.

Moreover, Solano added immediate heating technology that will heat the straightener in just 60 seconds, making sure that you don’t need to wait for a long time to begin your styling.

Additionally, this Sleekheat450 Professional Flat Iron adds a bolt-shaped sign that flashes a red light when the iron plates are heating and burns a blue light when the iron will be cooling down.

The indicator also begins blinking when the straightener can use at the wanted temperature setting.

Further, the cord also has a light that brightens red when the straightener is filled in.

3. CHI Expert Classic Flat Iron


Additional Features
  • Ergonomically created styling tool gives a strong, non-slip grip
  • The double voltage feature makes it fit for worldwide usage
  • At 11.9 inches in length, this tool can be taken inside a bag
  • 1-hour auto-shutoff feature
  • Incorporates a heat resistant mat for most safety
  • 9ft. long cord incorporates a tangle-free swivel cord
  • 2 year Limited Guarantee

Our Opinion: Innovative Technology Supported Flat Iron

CHI is a famous brand globally, making quality flat irons for its customers.

So, this Classic Tourmaline Ceramic Flat Iron is no different.

It is smooth, alluring, and small. We think it one of the best flat irons for curly hair because of its wondrous features and excellent performance.

To straighten your sensitive curly hair securely, CHI included two tourmaline ceramic constructed plates in this flat iron.

The tourmaline ceramic plates give the best advantages of both materials and style your curly manes like no other plates.

While the tourmaline heats up, the plates’ ceramic supports distribute the heat equally during the hair strands.

Therefore, avoiding burns and making sure that the straightening method is fast and uniform.

Another feature that will help to prevent hair damage is ionic technology.

CHI installed an ionic generator in this styling tool that delivers millions of negative ions to the hair strands to seal in moisture and will stop burns.

Besides ionic technology, this flat iron includes infrared emission technology to make your curly hair straightening method accurate and fast.

The infrared emission improves the heat from the machine penetrate the hair shaft simply to straighten the strands from the inside quicker.

The plate model and size is also something to discuss.

CHI included two 1 inch floating plates to this flat iron to make sure that it straightens your curly hair without destroying or breaking it.

The floating plates with beveled edges give safer grip and control over the styling, set the right amount of pressure, and change the angles continuously towards the direction of hair pull to avoid damage.

In extension to straightening, you can also apply this tool to build glossy waves in your hair because of these floating plates.

Let’s explain the temperature settings. Keeping in mind the delicate characteristics of curly locks, CHI included various heat levels in this straightening tool ranging from 180° F to 450° F.

Moreover, this temperature setting is matched with a labeled rheostat dial to make it even more comfortable to choose your preferred heat settings.

4. Infiniti Pro by Conair Tourmaline Ceramic Hair Straightener


Additional Features
  • Features a smooth, purple design
  • Incorporates an Argan oil treatment to revitalize condition and nourish hair
  • Auto shutoff feature
  • Conveniently set button and controls
  • Adds a red indicator light
  • 5-Year Limited Warranty Period
Negative Point
  • No other color options

Our Opinion: an Affordable Flat Iron

Another popular machine to straighten curly hair locks at a quite cheap price range is this Tourmaline Ceramic Flat Iron from INFINITI PRO BY CONAIR.

This straightener is available with all of the features needed to straighten curly hair successfully.

The sequence of infrared emission, ionic technology, and the ceramic tourmaline plates created this INFINITI PRO flat iron one of the most reliable and powerful tool to straighten your curly hair locks.

The infrared emission straightens every hair strand from the center out while the negative ions delivered from the ionic generator preserves the hair from heat injury.

This is done by securing in moisture and setting the ionic condition of your hair.

The ionic technology also will helo to reduce frizz from your curly locks and results in silky, smooth, and bright straightening results.

Further, the ceramic tourmaline plates give the expected amount of heat evenly during your curly tresses to further decrease heat damage.

Moreover, this flat iron’s ceramic tourmaline floating plates are 29% higher than any other usual straightening tool of 85mm in length.

This will make sure that more of your hair strands can be straightened at once, decreasing your overall styling duration.

Moreover, the soft surface of these floating plates glides quickly along with your hair without any snagging so that you can like creaseless, straight hair locks instantly.

With these large plates, you can easily straighten your curly hair accurately and produce wavy curls.

Another feature of this INFINITI PRO flat iron is the Right Ceramic Heater that will heat the plates in 15 seconds.

Further, this Ceramic Heater efficiently increases the heat lost from the plates’ surface regularly, allowing the tool to remain hot during the full straightening method.

Additionally, this INFINITI PRO straightening tool incorporates 30 various temperature settings, ranging from 280° F to 455° F.

Since your curly hair really needs a heat setting of 390° F or more to straighten them excellently, you can change the rheostat dial to your selected heat level.

5. Bio Ionic Onepass Flat Iron


Additional Features
  • At 12 ounces, this straightening iron is quite lightweight and small
  • Adds an indicator light that illuminates red when the tool is ON
  • Includes rooted indentation handles for a secure, non-slip grip
  • 9 feet long tangle-free swivel cord ensures freedom of action
  • 5 Year Warranty time
Negative Point
  • No auto-shutoff feature

Our Opinion: a Professional Grade Flat Iron

This BIO IONIC Onepass flat iron did not finish up as our third choice because of pricing, but because it doesn’t add floating plates.

Nevertheless, the lack of floating plates doesn’t take away the truth that it is a wondrous flat iron with excellent features to straighten curly hair locks to completion.

Firstly, as BIO IONIC recommends, this professional-caliber Onepass flat iron can straighten curly hair locks with just one way of the tool.

It does this by using patented Silicone Speed Strips on the iron plates that immediately grips your hair strands and produces natural tension.

This ensures that your hair is straightened well, without running the iron many times through the equal part of the hair.

In addition to these silicon strips, the infrared emission technology also provides the correct straightening process by giving heat inside the hair shafts to straighten every hair strand.

Moreover, this OnePass flat iron’s ceramic plates are available with Volcanic Mineral liquid that, with the ionic technology’s negative ions, will cut down the hair’s water clusters.

The micronized water molecules then enter the hair shafts, securing in the moisture for more satisfying results.

The negative ions also preserve your damage-prone curly hair from heat injuries and additional hot spots.

Additionally, the volcanic mineral infusion presents the plates’ surface soft and lets hair to glide through the iron simply for styling.

Another excellent feature of this Onepass Straightening Iron worth considering is the BioCeramic™ Heater included in the tool.

This BioCeramic heater can heat the plates in only 5 seconds, decreasing your waiting time and giving fast heat replacement to keep the plates hot as long as the machine is on.

Further, this flat iron’s multi-level temperature controller, beginning from 240° F to 400° F, has revealed the labeling of the heat settings.

This multi-level temperature setting also ensures that you will never out of the heat when it gets to straightening your curly hair.

6. Hair Straightener by Vland Pro Flat Iron

This VLAND flat iron is a perfect straightening tool with some great features to make your hair’s straightening process smooth.

But we didn’t suggest this ironing tool to straighten curly hair locks because:

  • This straightening tool includes PTC Heating Technology and Infrared Emission, it doesn’t add ionic technology.
  • The plates of this machine are manufactured from titanium which is not a fit material to work on damage-prone curly hair locks. Titanium plates make a high amount of heat fast that can make burns.

7. Pro Beauty Tools Xl Copper Digital 1 Inch Flat Iron

There is no uncertainty that this flat iron from Pro Beauty Tools is the best tool to straighten hair.

But we didn’t think of it as one of the most reliable flat irons to straighten curly hair because:

  • Doesn’t have an ionic generator (ionic technology) to deliver negatively energized ions.
  • Further, Pro Beauty Tools created the plates of this flat iron utilizing copper with a ceramic infusion which, according to hair specialists, is not an excellent combination to apply on curly hair locks. Copper makes a high amount of heat, which can damage your hair.
  • Additionally, the plates of this straightening machine are not floating plates.

How to Straighten Curly Hair and Make It Last?

With the right method and appropriate machines, you can transform your curly hair into straight, flowy locks.

Preparing Your Curly Hair

Preparing your curly hair for the straightening method is necessary since you will use a good amount of heat, which can burn them.

Start making by washing off your curly hair with a moisturizing shampoo and conditioner with the Kerastase Nutritive Bain Oleo-Curl and the TRESemmé Flawless Curls Curl Hydration Conditioner.

Which provides and softens your hair locks. Using shampoo and conditioner will give you the proper result in fresh and smoother hair for you to glide the flat iron effortlessly.

Remember to apply lukewarm water for the washing method as hot water can possibly destroy the hair cuticles and can make your curly hair dry and frizzier.

Once you are finished with the washing and conditioning, just use a great quality hair dryer to blow dry your hair and eliminate the excess water.

The INFINITI PRO BY CONAIR Advanced Brushless Hair Dryer with Concentrator Attachment is the best hair drying machine as it is available with a concentrator attachment and ionic technology for quicker drying.

Straightening Your Curly Hair

After making your hair, it’s time to begin the straightening method.

Since you will use a huge amount of heat to your curly hair, it’s always fit to spray a heat protectant so that your hair is preserved from the heat.

You can apply this Pantene Pro-V Stylers Heat Protection Spray as it shields your hair strands from heat and gives a silky, glossy result.

Now begin applying your favored flat iron to straighten your curly manes.

Section off your hair into shorter parts and work to straighten each part in one pass to show them to less heat and stop any potential loss.

Once you are ended straightening, don’t miss to use a setting spray, like the Tigi Bed Head Masterpiece Massive Shine Hairspray.


In the end, we must say that we have tried to describe in easy terms the different kinds of curly hair, the problems connected with these hair types, and how a flat iron can work them easily.

We also suggested some of the best flat irons accessible in the market to straighten your curly hair.

All the straighteners that we have recommended commitment to style your curly locks carefully.

Hence, no matter which of the above flat iron you will purchase, you will get the most excellent value for your money and change your curly hair into whatever you truly want.

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