What Flat Iron Temperature Setting Is Right For Your Hair?

by HSI Professional | Jan 12 2017

We're all guilty of it. You're busy, you need to get out of the house, and you haven't even straightened your hair yet. That means that you're cranking the temperature up on your hair straighteners to get the job done quicker. It works in the short term, but in reality it's frying the life out of your hair. Instead, you need to find the right temperature for your hair and stick to it, come hell or high water. Spend the time now to find out what the ideal temperature for you is, and you'll have amazing hair whenever you step out of the door.

Why Temperature Is Important

Is temperature really that important? As long as the flat iron is hot, it'll get the job done, right? Well, yes and no. If your flat iron is hot, then yes, it will straighten your hair. However, it could well be too hot or too cold to do the job properly. If the irons are too cold, then you're to go over the same sections of hair over and over again. That means you're going to damage the hair through constant heat, and it's going to look lifeless. If they're too hot, you'll be doing instant damage every time you break the flat irons out. Like Goldilocks, you'll want a temperature that's just right.

HSI hair straightener

The Features Your Flat Irons Need

If you're going to do this, you need to do it right. That's why you'll need to buy a pair of straighteners with the right features. This is what to look for the next time you go shopping:
  • Adjustable temperature: This is the big one. If your current set of flat irons don't have a temperature dial, then they're no good for you. You need to be able to set the temperature you need on them. Your new set needs some way for you to control the heat.
  • Light up indicators and displays: These are essential to you knowing that your flat irons are at the right temperature. If your set has light up indicators, they'll light up when your flat irons are at the right heat for you to use. If yours have a display, then it will show you the temperature your irons are currently at.

What Temperature Is Correct?

So, then, what temperature do your irons need to be at, to keep your hair looking great and staying damage free? Many have tried to answer the question, and have come out with different heats that your irons need to be at. Some say 365F is perfect. Others say that it's more around 300-380F. The real answer is, it depends on you and your hair. Everyone's hair is different, and has different needs.

The temperature you need will depend on several factors, such as the thickness of your hair, whether it's already suffered damage, and how it reacts to heat. If you want to find your perfect temperature, get your HSI hair straightener and turn it to its lowest heat setting. Then, keep testing it on your hair and upping the heat until you start getting results. Once you find the temperature that works for you, keep the dial set to it.

The Dangers Of Having The Heat Too High

Many people like to crank the temperature up and keep it there, in the belief that it's much quicker to style your hair that way. In reality, it's really not going to work and all you're doing is damaging your hair. This is because when you subject your hair to high heats, it cracks the cuticle of the hair shaft. this lets more damage happen to the hair, exposing it to chemicals, sunlight, and other harmful substances. Instead, you want to do the temperature test seen above, and stick to the heat level that works for you.

flat iron heat protectant

How To Stop Further Hair Damage

If your hair has been damaged by heat, all is not lost. You can still use your flat irons and get the look you want, you just need to be careful. First of all, invest in a good heat protectant, like our argan oil heat protectant spray. This will create a layer between your hair and the flat irons, absorbing a good deal if the heat and saving it from further damage.

The plus side to using our product is that the argan oil will feed your hair at the same time, helping repair the already existing damage. Also, try giving the flat irons a rest when you can. It sucks not to use them, we know, but the less you use them, the less further damage you'll do to your hair. Get your flat irons and get testing for your personal temperature. You'll be glad you did when you see all the damage you're saving your hair from!


  • Thanks very good information that I can I use..

    Marie on

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