Best Flat Iron For Relaxed Hair – Top 5 With Real Customer Reviews

Wishing to take your relaxed hair to the next level? Is that even possible? With the best flat iron for relaxed black hair, it sure is! Everyone loves silky, sleek, and relaxed hair, and you can only achieve that with the right tools. This is especially true for black natural-haired gals; if this is the case for you, only the best flat iron for relaxed hair can give you the result you can only dream of for now.

Relaxed hair is curly or coily hair that is chemically straightened with a chemical cream. A relaxer opens the hair cuticles, penetrates the cortex, and breaks down the bonds that make a hair strand curl. The process is semi-permanent, however, a touch-up from time to time is required with the best flat iron for relaxed hair that will keep you looking fresh 24/7.

If you are planning to style your relaxed hair, using the wrong hot tool on your relaxed hair can result in hair breakage and damage, this is exactly why you need to make sure you have the right tools before you get started. The best flat iron for relaxed hair should come with various features, including a heat protection pad, and auto-shutoff options to ensure stress-free styling.

Finding the best flat iron for black natural hair can be a bit of a drag with all the choices that are available. If you need some guidance, you are in the right place. Continue reading and check out our top recommendations for the best flat iron for relaxed black hair, where to find them, how to use them, reviews, tips, and more.

Best Flat Iron For Relaxed Hair Reviewed In This Guide

How To Choose The Perfect Best Flat Iron For Relaxed Hair For You?

The best flat iron for relaxed hair that you select should align with your hair’s texture and density; so you want to consider the length and thickness of your hair.

There are different types of hair, and you need to consider the type and length of your hair when looking for a flat iron for your relaxed hair. We have thick hair, thin hair, fine hair, short hair, long hair, and more, and they all require different heat ranges.

The best flat iron forAfricannAmericann relaxed hair should offer multiple benefits, including a reduced risk for heat damage, the right tool will also be easier to maneuver, style your hair more efficiently, and decrease the risk of overheating and damaging hair.

When selecting the best flat iron for relaxed hair you should aim to choose an iron that is best suited for your hair’s length and thickness. The larger the size, the faster the process. However, small plate sizes allow for more complex styling, that’s why the pencil flat iron is great with edges or the nape of the neck.

Whether you are going for a meeting or getting ready for a date night, you will need the best flat iron for relaxed hair, that can provide you with lasting results and can help you style your mane for every occasion.

Types Of Best Flat Iron For Relaxed Hair

Ceramic Best Flat Iron For Relaxed Hair

The best ceramic flat iron for relaxed hair heats up evenly and lacks “cool spots” that other irons often have, which means that you’ll achieve a more even straightening job. For this reason, ceramic irons are also known for keeping frizz at bay and smoothing out the hair, especially for fine, thin strands.

Ceramic plate flat irons work exceptionally well for people who have thick hair and are very popular for women in the natural hair community with thick type 4b and 4b hair, women with thin hair may like to use a ceramic iron as long as it is thinner in diameter.

Ceramic Tourmaline Best Flat Iron For Relaxed Hair

The latest technology in hair straightening and curling is tourmaline. The term tourmaline refers to a gemstone or crystal that is crushed into a fine powder. The fine powder is used to coat the ceramic plates. The best flat iron for relaxed hair with infused tourmaline is said to give glossier and smoother results.

The main advantage of tourmaline is the fact that it generates a lot of natural negative ions that are very effective at reviving damaged tresses.
The ceramic tourmaline plates produce negative ions to eliminate frizz for smooth softer looking hair. With even heat distribution, there are no damaging hot spots.

Titanium Best Flat Iron For Relaxed Hair

Titanium irons are known for heating up quickly and staying hot consistently during use. The best flat iron for relaxed hair with titanium plates is exceptional at maintaining consistent heat levels. They deliver a powerful ionic charge that helps impart smoothness and shine to your damaged tresses.

Titanium plates are best suited for keratin-treated hair. The titanium-treated plates enhance even heat distribution, eliminating cold spots while conditioning hair for shinier, sleeker results. Lasting durability under high heat temps.

Best Flat Iron For Relaxed Hair List

1. HSI Professional Glider Best Flat Iron For Relaxed Hair

What We Like

  • Straightens, Flip, Curls
  • Micro Sensors
  • Ceramic & Crystals

What We Don’t Like

  • On The Heavy Side

The HSI Professional Glider creates dramatic results on even the frizziest coarsest hair; to quickly straighten, flip, and curl with minimal effort. Simple & fast.

High-quality ceramic plates use 8 HeatBalance micro-sensors to regulate the temperature & evenly distribute heat so fewer passes are needed on your precious hair.

The Glider’s plates are designed with ceramic and tourmaline crystal ion plates to create a shinier, silkier finish in less time.

The adjustable temperature settings from 140-450°F give greater control to achieve a perfectly sleek and smooth look for all hair types.

The Glider’s worldwide dual voltage compatible 110v-220v works so you can take it with you on your next vacation. Move freely with the 360-degree swivel cord.

What Our Testers Say

This is the holy grail, guys. They’ve done it. They’ve made a flat iron that can control the beast(my hair). 10x better than my Chi Iron, and I can get my hair done in about 20 minutes now.

FYI, I’m mixed(black/white) with EXTREMELY thick/coarse hair. And I relax and dye it.

The Glider Ceramic Flat Iron comes complete with a heat-resistant glove to protect your hand against the hot iron, an HSI style guide for tips, and a travel-size, argan oil hair treatment to help smooth and protect tresses.

It also includes an attractive silk case with a drawstring closure for easy transporting of all items when traveling.


Unplug Curling Iron and allow it to cool. Iron must be cleaned only when cold to the touch. Use a soft, slightly damp cloth to wipe the barrel.

2. Revlon Smooth Brilliance Ceramic Flat Iron For Relaxed Hair

What We Like

  • Ceramic Coating
  • All-Hair-Types
  • Travel Friendly
  • Ergonomic

What We Don’t Like

  • No Temperature Control Buttons

Your secret weapon for a healthy-looking finish. Ionic tourmaline helps fight frizz and create shine.

With the best ceramic flat iron for relaxed hair, you can create beautiful straight or wavy styles thanks to its ergonomically slim-profile 1-inch flat iron.

Extra-long plates provide a larger hair styling surface for more coverage and help you quickly glide your way to new styling heights.

Complete styling flexibility and control with a 15-second super-fast heat-up and 10 customizable high heat settings up to 455 F.

Also counts with 1-hour automatic shut-off, a built-in counter rest, recessed buttons, and a locking switch for convenient storage.

What Our Testers Say

I love this straightener! I originally bought this same straightener in 2018 (it still works great!) but I decided to buy a backup straightener just in case my original breaks. I have curly hair and a lot of it!

Hair washing day is my least favorite because after it’s washed, dried, and brushed, it’s big and puffy and just looks scary. This straightener straightens my hair in 15 minutes! I only have to go over each piece of hair twice!

I put it on the hottest setting (450⁰) and it does get nice and hot! I love that I can straighten my hair so fast because I’m a mom of three children and I don’t have much time.

How To Use Revlon Smooth Brilliance Best Flat Iron For Relaxed Hair

  1. Hair should be dry and free of tangles before using the straightening iron.
  2. Plug the straightener into an electrical outlet. Move the switch to the e-ON position
  3. While your straightener is heating up, spray a thermal protector across your strands, making sure to cover it evenly and lightly.
  4. Divide the hair into manageable sections and clip the upper layers on top of your head, out of the way, working with the layers underneath first.

3. Deogra Flat Iron For Relaxed Hair

What We Like

  • Ceramic Tourmaline
  • Keratin & Argan Oil Infused Plates
  • 6 Temperature Settings
  • Automatic Shut off
  • Safety Lock Function

What We Don’t Like

  • No Dual Voltage

DEOGRA professional hair straightener was equipped specialized ion outlet that emits millions of negative ions that smooth down opened hair cuticles and seal in your hair’s own natural oils and moisture.

Keratin & Argan oil-infused plates with moisturizing and nourishing properties provide an ultra-shiny, frictionless gliding. Tourmaline & Ceramic coating leads to an anti-frizz/static & damage less finish to your hair.

DEOGRA curling straightening iron with 6 adjustable temperature settings from 330℉ to 430℉ allows you to choose the best temp that fits the thickness and texture of your hair to ensure optimum styling performance.

What Our Testers Say

If you’re looking to upgrade to a new flat iron and you’re on a budget, you need to buy this one. The ionic flow takes the frizz out of my hair while adding shine, leaving my hair super sleek. The plates glide across hair without tugging or pulling. There are 6 temperature settings that make this flat iron work on different hair types and textures.

It included a heat-protectant glove and 2 hair clips as well. The cord is long and it swivels at the base. It truly is a fantastic deal and it works wonderfully. The price point is unbelievable for how well it performs. So happy that I have this in my hair tools collection and I will be using it a lot.

Capable of styling fragile & damaged hair to perform as a professional silk press flat iron for black women’s hair. The digital LCD display panel accurately shows if the desired temp has been reached.

DEOGRA ceramic hair straightener will shut off automatically after 40 minutes of non-use ensuring safety at home.

The safety lock button on the side control opening and closing of the iron, making it compact for carrying and storage and keeping your tabletop tidy.

Straightener also has an 8.2ft extra long 360° swivel cord, which prevents tangling and gives you more convenience to style your hair from any angle.


Choose the best temp that fits the thickness and texture of your hair to ensure optimum styling performance.

4. Infrashine Original Medium Flat Iron For Relaxed Hair

What We Like

  • Ceramic
  • 5 Temperature Settings
  • Infrared Anionic Technology

What We Don’t Like

  • Expensive
  • No Even Closure

If you need styling versatility paired with reliable performance, the InfraShine Medium Iron can deliver. Heats up in 5 seconds to 5 temperature settings from 170 to 400 degrees Fahrenheit.

This Micro-Silica infused ceramic styling iron offers a full range of styling options and FAR-Infrared anionic technology helps to gently close the cuticle layer and lock in your hair’s natural moisture.

That means that hair dries faster and styles stay locked in longer. Floating, beveled plates provide an ultra-smooth glide through all types of hair while the five heat settings from 170 degrees to 400 degrees Fahrenheit allow it to be used on all hair types from fragile to extremely coarse.

Streamlined ergonomic design is ultra-lightweight and easy to hold while the innovative Multi-Mesh ceramic heating element is rated for 5000 hours of demanding in-salon use meaning that your irons will need replacing less often.

The heavy-duty spring system offers a firmer grip and increased control over your styling while the 1-inch size covers practically any styling situation, making it perfect for your relaxed hair.

What Our Testers Say

I got my first Infrashine Flat Iron TEN years ago, and it is still going strong even now! I needed a second one and am so pleased to say that it seems just as good as my first one from first impressions. With so many products nowadays breaking or not being quality, this is one product I’m really grateful for and considering how reliable it is.

I have no problem paying a little more knowing that it is above and beyond the best and longest-lasting straightener I could ask for. As far as performance, Infrashine straighteners heat up quickly to high temp, straighten my frizzy and coarse hair like a dream in no time, and while straightening isn’t great for your hair this one doesn’t seem to damage my hair too badly!


Starting at the roots, firmly clamp hair between the two plates and glide the best flat iron for relaxed hair down the entire hair strand, from root to tip, in one smooth motion. Keep the iron moving to avoid damage to the hair from excess heat.

5. BIO IONIC Onepass Styling Flat Iron For Relaxed Hair

What We Like

  • Silicone
  • Dual Voltage
  • Titanium Plates

What We Don’t Like

  • Expensive

The Onepass now features 30 min auto shut-off, digital temperature display, NanoIonic MX-infused plates, an updated body shape with a Soft Touch finish, and ergonomic thumb rest.

This flat iron is great for relaxed hair, thanks to cushioning bio-ceramic plates that are infused with nano-ionic minerals to gently and effectively relax your hair in no time.

What Our Testers Say

I love this styling iron! It truly is one pass, heats quickly, leaves my hair shiny and smooth, and does not pull my hair. In addition, it is well-designed to fit comfortably in your hand. The on/off button and temp adjustments are on the inside so that you don’t accidentally turn it off while styling your hair.

You don’t need to go over the same section of hair several times; thus its name is OnePass styling ion.
NanoIonic mineral hydrates dry, damaged hair. Smoothes flyaways and controls frizz. Creates brilliance and shine.

The silicone speed strips deliver a one-pass styling from root to tip by gently gripping the hair rather than clamping it in between the plates. This way, you straighten and smoothen your hair without pulling, snagging, or breaking the hair strands.


Smooth over wider sections of hair to reveal smooth, sleek, and healthy-looking hair.

Best Flat Iron For Relaxed Hair Buying Guide

What Is A Best Flat Iron For Relaxed Hair?

Relaxed hair is that kind of hair that has been straightened to give a silky smooth look and the hair strands have been chemically altered by a relaxer. Relaxer makes it easier to straighten curly hair without any hassle.

They break down the curly strands with chemicals and become less frizzy and thick.
Relaxed hair can be categorized as a hair type as the process of relaxing the hair changes the natural curl pattern of the hair.

As the relaxed hair is chemically altered to be straight and silky, the hair texture is very sensitive to aggressive styling or heat. That said, the best flat iron for relaxed hair should be of top quality to preserve the texture of hair and keep it away from damage.

How Does A Best Flat Iron For Relaxed Hair Work?

Flat irons in general, work by breaking down the positive hydrogen bonds found in the hair’s cortex, which causes hair to open, bend and become curly.

Flat iron your hair in small sections utilizing pins or clips to keep the hair you are not dealing with out of the way. Sometimes you can get away with just one pass of the flat iron depending on your technique but if you have to do two passes it is not the end of the world.

Use the comb chase method for a smooth finish. This means grabbing a fine-tooth comb and placing it in front of the flat iron as you make the pass. The comb smooths your hair and removes tangles right before the flat iron runs over it to give you a smooth finish.

Features To Look For In A Best Flat Iron For Relaxed Hair

Plate Material

The best flat iron for relaxed hair can be made with different materials. They can come with tourmaline, ceramic, titanium, or a combination of these materials. These materials are different when it comes to cost, heat-up time, durability, and heat distribution.

Titanium is more expensive but more durable. Tourmaline heats up quickly while ceramic helps with even heat distribution. A combination of these materials will give you a much better tool to achieve better results.

Plate Width

Wider plates mean less straightening time. When your straighter has wide plates, then it becomes easier to straighten the hair as less time is required. Traveling with a wide plate flat iron then becomes difficult as it doesn’t easily fit in the bag. Also, it is not recommended for women with fine hair to use wide plates as it will damage the hair.

Adjustable Heat Settings

Flat irons come with different temperature ranges, and we recommend you go for an option that comes with a temperature range that is ideal for your hair type.

Relaxed hair does not need a high amount of heat; as such, you want to make sure you go for an option that allows you to adjust temperature settings. Adjustable temperature settings should be one of your major focuses. You want to be able to regulate the heat to suit your styling and hair needs.

Ionic Technology

Ionic technology releases more ions into the hair and keeps the hair frizz-free. As relaxed hair has a lot of frizz in them, it is important that you use a flat iron with such kind of technology.

Dual Voltage Capacity

The best flat iron for relaxed hair has dual voltage. You can use them anywhere in the world safely and conveniently. The best flat iron for relaxed hair that is dual voltage caters to 110-120v and 220-240v, allowing for use with any power system in the world.

A cordless hair straightener would also be great for an overnight or weekend getaway. Just charge it up before you go and you won’t have to worry about voltage at all.

​Automatic Shutoff

Talking about safety, an auto-shutoff feature should be one of your major considerations when picking the best flat iron for relaxed hair.
Distraction is one of the reasons why you might forget to switch off the steam hair straightener after use.

To avoid risking the safety of your premise, get a straightener that includes an automatic shutoff feature. This feature gives you peace of mind knowing that the flat iron will automatically power off if left unattended for some time.

Digital Controls

Keep an eye out for a design that has digital controls with an intuitive LCD. Digital controls allow for easy temperature adjustments. You just have to tap on the positive or negative sign. The LCD readout displays the exact heat level you have selected.

Swivel Cord

You also want to make sure that the flat iron comes with a long, 360-degree swivel cord. Relaxed hair is not as straight and standing as unrelaxed hair, and you need all the comfort you can get while styling it.


Curved edges on the best flat iron for relaxed hair are a great feature for creating curls and flicks hence negating the need for a curling wand or curling iron afterward.

Common Questions About Best Flat Iron For Relaxed Hair

Is ceramic or titanium better for African American hair?

Titanium is stronger and more durable; it also heats up very quickly. Ceramic, on the other hand, heats up much smoother and evenly. It does a great job of distributing the heat evenly.

Titanium straightener is amazing for quick styling: it heats up in no time and completely straightens your hair in just a few passes. A ceramic one will take more time to heat up and will require more passes to straighten the hair, but it will be less damaging than a titanium one.

Is tourmaline or titanium better for your hair?

For most hair, tourmaline works just fine, but this is only true for you if your hair is thin, or particularly Type A. If you have thicker hair, and if it doesn’t cooperate particularly well, then it would be a good idea to try using titanium, which is a bit more expensive, but a lot more effective.

How hot should my flat iron be for relaxed hair?

Experts say anywhere between 350-400 degrees. Pass the flat iron over your hair slowly and steadily. The slower you go, the better the heat will penetrate into the strands giving your hair that shiny smooth straight look.

How long does flat-ironed relaxed hair last?

Two weeks is even pushing as a maximum for wearing flat-ironed tresses, but some women routinely go four weeks, or longer. Although you’re trying to avoid as much moisture as possible while your mane is straightened, going too long without hydrating your hair is asking for trouble.

Can you put heat on relaxed hair?

The perk of a relaxer is that it makes you less reliant on hot tools to straighten and style hair. Because the process of relaxing hair weakens follicles, you’ll want to avoid using excessive heat as it can easily cause damage.

How to flat iron relaxed hair without damage?

  1. Preparation. Before washing your hair, do a pre-poo or hot oil treatment. This extra step protects your hair from getting stripped when using shampoo. Apply the oil or your pre-poo of choice throughout your hair from root to tip to ensure even coverage.
  2. Washing. Cleanse your hair thoroughly to remove buildup and anything that would contribute to dullness when you flat iron your hair.
  3. Deep Conditioning. Create a strong base by doing a protein treatment on your hair. Protein helps to add resilience to your hair strands so that when you do apply heat, your hair can withstand any damaging effects.
  4. Detangling. Detangling is a very important step when trying to achieve a smooth finish with a flat iron. Detangle your hair gently but thoroughly using a wide-tooth comb.
    Separate your hair into sections so that you are detangling thoroughly and braid or lightly twist each section when you are done to prevent re-tangling. Always detangle starting from the ends of your hair and working your way up toward the root.
  5. Air Drying. Air drying is a healthy option in this case, especially if you know you are about to turn up the heat with a flat iron. It is totally understandable why natural ladies with tight coils would need to blow dry their hair first but relaxed ladies for the most part can get away without this step.
  6. Flat Ironing. Now it is time to flat iron your hair. You have already set the best foundation beforehand so the actual process of flat ironing should be easy and your result will be smooth flowy hair. Always use a good heat protectant on each section prior to flat ironing your hair to give it that extra oomph of protection before using direct heat. Flat iron your hair in small sections utilizing pins or clips to keep the hair you are not dealing with out of the way.
  7. Shine. Using a product to add shine is entirely optional once you have completed your flat iron because most times you will notice your hair’s natural shine come through and that might be enough for you.

Enjoy Your New Best Flat Iron For Relaxed Hair

We hope this guide was helpful in your search for the best flat iron for relaxed hair. Now that you have learned about the best flat iron for relaxed black hair options, you can make an informed decision and pick what’s best for your specific hair needs.

By using the best flat iron for relaxed hair you too can get a silky smooth, relaxed look without much fuss.
Feel free to reach out if you have any questions or comments. We are always happy to hear from you.

Disclosure: The Hair Products recommended in this article are our top favorites because they have a great combination of quality, features, and affordability. As an Amazon Associate, I earn from qualifying purchases made through the links as a way to support this site. If you buy a qualifying product, you’re not charged anything extra, but I’ll get a small commission to help pay for my expenses. I hope you find our advice helpful and discover the Best Hair Products for your needs on this list.

Photo of author
After graduating from an apprenticeship program in 2010, color specialist Doris began working behind the chair. She started with color corrections and then moved on to creative color. Currently, she works with blonding and grey-blending clients. Sarah views hair color as both an art form and a science and is passionate about salon education, which is the main reason why she started this blog. She has the Invisible Bead Extension Certification and the Bellami Master Certification for extensions.
Photo of author
After graduating from an apprenticeship program in 2010, color specialist Doris began working behind the chair. She started with color corrections and then moved on to creative color. Currently, she works with blonding and grey-blending clients. Sarah views hair color as both an art form and a science and is passionate about salon education, which is the main reason why she started this blog. She has the Invisible Bead Extension Certification and the Bellami Master Certification for extensions.