Best Portable Hair Straightener Flat Iron for Car

Last Updated on July 7, 2021 by SulaBeauty Staff

Why compromise with your look, when you can always style your hair whenever you want with a portable car straightener?

Yeah, you heard it right!

The need for styling your hair can rise anywhere, anytime. You might have seen days when you had already left for your office but before reaching your hair turned unruly. Further, you might have been in situations where you’d want to sort your hair instantly right before attending a party.

At these times, the urge to get a hair straightener that plugs into the car rises. And guess what, there is actually a huge range of car flat irons that can get your messy hair to look neat and manageable within minutes.

Before getting to the reviews of the best hair straightener for car, let’s first see what features these flat irons possess.

What is a 12V Hair Straightener?

in car hair straighteners

As the name itself speaks, a 12V Hair Straightener is simply a hair straightener that can be plugged into the 12V power outlet or car cigarette lighter to power up. These straighteners are specifically designed to give you the freedom to style while sitting in your car.

Most of the cars, trucks, SUVs, caravans, and pretty much all other vehicles nowadays come with an auxiliary 12V power outlet or cigarette lighter outlet. These sockets also allow you to use flat irons in your car.

However, flat irons that plug into cars are low-powered. They come with 15 – 25 watt power input that uses up to 200 watts from your car battery. Hence, the tool cannot be used for heavy usage, though it works amazingly for instant touch-ups before a party or important meeting or while camping.

The portable flat iron for the car is not recommended for professional use as they are 12v irons. You can use this hair styling tool whenever you feel the need to give your hair a quick fix during office hours, before a party, or any other situation where you want to look your best.

The flat irons can give you a frizz-free, glossier look within minutes. All you have to do is plug it in your car and start styling. Plus, while the flat irons suit all hair types, these irons work best for short-haired girls.

In-Car Hair Straightener – Buying Guide

There are several aspects to consider before purchasing a hair straightener for the car. You need to check the plate material, size, length of cord, power input, etc. to ensure that the straightener is the right fit for your purpose.

Powers from 12V Auxiliary Power Outlet/ Cigarette Lighter Outlet

The 12V hair straightener starts heating as soon as you power it up using the auxiliary power outlet in your car. It is basically, a DC-powered flat iron that can be powered through most of the latest vehicles.

Alternatively, these flat irons can also be powered using the regular AC connection. However, this is only possible using voltage converters.

Measurement of Plugs

12V flat irons have way different plugs than regular ones. The plugs are round in shape that can fit in your car’s power outlet. The diameter of these plugs also varies in certain countries. Generally, the plugs of most car hair straighteners have a diameter of 20.73 mm to 21.18 mm.

Though it is highly suggested to purchase a hair straightener that has a plug with bigger diameters as this makes it usable in older car models. Plus, it also works in most of the European and Asian vehicles available outside the USA.

No matter in what corner of the world you live in, you’d want to pick the flat iron with 21.88 mm diameter, to get the freedom of styling while traveling in any country.

PTC Heater

PTC (Positive Temperature Coefficient) Heaters are the best ones when it comes to hair styling tools. These tools last for a longer time and are safe to use.

Irons with PTC heaters cool down quickly, preventing them from getting overheated. Even when you leave them on for a longer time they won’t get overheated. 

Contrarily, certain 12V flat irons come with MCH technology, that heat up quickly. But they also consume high battery power and get overheated quickly. So, it’s better to avoid such car hair straighteners.

While buying a 12V car flat iron, it’s good to go for the one that has PTC heaters. This will consume less power and not drain the car battery much.

Low Power Input

A necessary feature that every car hair straightener should possess is the ability to use low input voltage.

The regular flat irons usually run on 45 – 70 watts inputs which are quite less as compared to 12V hair straighteners running on 15 – 28 watts.

The regular flat irons when used in cars, can consume up to 1000 watts of battery power, whereas a car straightener will only take up 150 watts.

There are plenty of car straighteners that you can choose from. But it’s advisable to purchase one with 18 – 24 watts consumption. This will not be heavy on your car battery yet do a great job for you.

Additionally, these flat irons will also heat up perfectly to give your tresses a smooth look.

Built-in Fuse

A fuse is an electrical safety device that saves the circuit from overcurrent. Car straighteners should have a built-in fuse to prevent the occurrence of excessive current flow.

Since flat irons are manufactured for infrequent use, their components are delicate. This may cause current flow, which in turn may damage both, the car’s power system and the flat iron.

With a built-in fuse, you no longer need to worry about such electrical hazards. Therefore, it’s essential to have a built-in fuse in the plug of a car straightener.

Cord Length

Being specifically designed for use in cars, a car flat iron has a much shorter cord. Ideally, the cord length of most car straighteners is between 3.5 – 4.5 feet, which is nearly half of regular ones.

Straighteners with a cord length of 4 feet and above are highly recommended, as they make it easy to style all parts of your hair.

Adjustable Twist Locks for Plugs

Hate it when the plug slips out while styling your hair? No worries, get a flat iron with twist locks for plugs. This lock will ensure that the plug remains in the socket, till you complete your styling.

Further, the adjustable lock will act as a support to fit into the smallest auxiliary receptacles. Simply allowing you to style your tresses without any interruptions.

A Few Additional Features

Apart from the features mentioned above, don’t miss to check the following ones as well:

  • Ceramic Plates: Ceramic plate straighteners can heat up to high temperatures and ensure even heat distribution. This results in frizz-free, smooth tresses.
  • Small Size: Smaller-sized hair straighteners (6 – 9 ft in total) are easy to carry everywhere. They can even fit in the glove compartment.
  • Support 400F temperature: Styling with straighteners that heat up quickly and can reach up to 400F is necessary to achieve excellent results.
  • Ionic Technology:  Straighteners built with ionic technology tend to result in glossier, damage-free hair.

What are the limitations of using a Car Hair Straightener?

A mini hair straightener for the car is a savior when it comes to instant styling. But there are certain limitations of these hair straighteners. Some of which are mentioned below:

  • The hair straightener uses the car battery power which increases the usage of the car battery
  • The iron can only be used for basic styling as it is not capable of delivering salon-grade results.
  • To use a hair straightener in vehicles other than the USA models, you’ll need to have a universal plug input.
  • A straightener that charges in a car usually has a shorter cord, so styling becomes slightly hard sometimes.

Top 12V Hair Straighteners for Car

12V flat irons are the best hair styling tools that help you style your hair right inside your car. Despite low-input voltage, they give shiny, smooth, and healthy locks that enhance your beauty instantly. If you are planning to buy a hair straightener that you can plug into a car, check out our top recommendations below.

1. JEEGOL Hair Straightener Car Plug Portable

JEEGOL Hair Straightener is the best car flat iron that gives sleeker and softer locks on the go. The iron is lightweight and compact and comes with a 4.5 feet long cord, which makes it easy to store this iron in small spaces.

JEEGOL straightener is built with ionic technology and has ceramic plates. This allows even heat distribution for faster styling. It also heats up instantly and reaches up to 400F temperature. So you can begin styling as soon as you plug it in!

Furthermore, this flat iron has a universal 21.88 mm plug, making it suitable for use in every vehicle model. It has an adjustable twist lock for continuous styling from start to end. 

The hair tool is made with PTC Heaters, which consume no more than 100 watts from your car battery. Plus, the built-in fuse cuts down your worries of current overflow.

Just keep this machine in the glove compartment of your car, and style your way before rushing to a party or whenever you go camping!

  • Suitable for all hair types
  • 1-minute rapid heat up
  • Heats up to 400F temperature
  • 0.5-inch wide ceramic coated plates
  • 6.5-inch total body length
  • Built with ionic technology
  • Does not have adjustable heat settings
  • Does not come with a carry case

2. Mini Cordless Travel Hair Straightener 

This professional hair straightener for the car is designed to give shiny, damage-free, silky locks within minutes. The cordless straightener comes with a micro USB port that allows it to be used across the globe with ease.

The hair tool has ceramic tourmaline plates that eliminate static, giving you a glossy hair look. It heats up instantly (in just 30 seconds) and can reach up to 400F temperature. The mini iron shuts-off automatically, if not used for 20 minutes.

The car flat iron works on every hair type, be it thin, thick, long, or short. Straighten, curl, or flip your hair anytime, anywhere, with this tiny hair tool. And no worries about power, as the travel hair straightener can run on a power bank also!

Carry this car hair straightener with you on your next trip, and give yourself those instant touch-ups for perfect pictures!

  • Suits all hair types
  • 30 seconds instant heat up
  • Reaches a high temperature of up to 400F
  • Double heating ceramic plates
  • Uses micro USB port for power
  • Prevents split ends
  • Made with ionic technology
  • Does not have adjustable heat settings
  • Does not come with a travel pouch

3. Gone Traveling 12V In-Car Portable Hair Straightener 

Gone Travelling hair straightener is a 12V straightener built for styling in cars. This car flat iron is the ultimate tool you’ll need for styling your tresses while traveling, thanks to its compact and lightweight design.

The product comes with ceramic plates that can reach up to 350F temperature. It has rounded edges that make it easy to curl the hair. However, styling thicker hair might take a little more time with this tool.

The Gone traveling flat iron has a 21.18 mm plug, which allows you to use it universally. The PTC heater and built-in fuse result in less power consumption from the battery (only 18 watts). Plus, with the 4 feet-long cord you’ll hardly face any issues while styling your tresses.

If you’ve always been struggling to get a frizz-free, glossy hair look while traveling or during festivals, this travel accessory will get you sorted.

  • Heats up in 90 seconds
  • Heats up to 350F
  • Lightweight and compact
  • Rounded edge for curling
  • Iron crimpers maintain a constant temperature
  • Ideal for worldwide usage
  • Not recommended for very thick hair

Frequently Asked Questions

Can you use a hair straightener in a car?

You can definitely use a hair straightener in a car. However, there are certain features that your straightener must possess. Some of them are a DC-power adapter, built-in fuse, should consume low power input, etc. Refer to the buying guide in this article to learn more about how to use a hair straightener in a car.

Can I use my regular flat iron in a car?

Yes, you can use a regular flat iron in the car. For this, you’ll need a power inverter that will alter the power inputs from DC to AC. It will also consume less battery power. 


If you are still confused about which car flat iron would be best for you, our top pick is the JEEGOL Hair Straightener Car Plug Portable one. It is a stylish, mini flat iron and has all the features including ceramic plates, ionic technology, and quick heat up, that make it the best car hair straightener.

With these inexpensive flat irons, you no longer need to stress about unmanageable hair before going to an event or camping. You can instantly give touch-ups to your tresses and get that gorgeous look back to your hair. 

So, stop thinking and get yours now!

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