How Does a Flat Iron Work

Flat irons appear to be truly clear since they require only a couple of goes with a relentless hand to carry out their responsibility, yet certain things can set a decent one over the rest. 

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The more effectively your straightener works, the better it is for the general soundness of your hair. Hair straightening with flat irons is one such method that depends vigorously on the fundamental logical/scientific properties of hair. In this article, we will talk about how a flat iron really functions.

Before we start, let’s get into the science behind hair.

Hair is comprised of a protein known as keratin. Keratin is made out of long chains of amino acids. Alongside hair, nails and teeth polish are likewise comprised of keratin. Hair, nails, and teeth share one significant factor for all intents and purposes that they are on the whole solid. It is tough to break a strand of hair separated without a couple of scissors. No measure of bending, pulling, scouring, or notwithstanding pounding can do anything to hair.

The quality of hair can be ascribed to an uncommon property novel to proteins like keratin, comprised of an enormous number of sulfur-containing amino acids. Sulfur molecules from contiguous chains of keratin bond together to frame disulfide bonds. These additional bonds make the strands that have keratin very strong. Likewise, they guarantee that the situation of the keratin particles stays fixed, with the end goal that the state of the hair fiber remains the equivalent.

Changing the Shape of Hair; Making It Straight

Normally, this is a decent property since hair, particularly long hair, is regularly exposed to a lot of pressure, and one would not need hair breaking or changing its shape due to this consistent mileage. 

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Nonetheless, when individuals want to change the state of their hair by, for example, making it wavy or making it straight, the disulfide bonds that we mentioned above represent an incredible issue. Most hair-rectifying methods, in this way, focus on these bonds. A simple technique for breaking these bonds is utilizing heat. This carries us to the most widely recognized method for rectifying hair which is the flat iron.

How Hair Straighteners Work

The functions of a flat iron can be described from many perspectives because, in general, a straightener goes through some scientific operations to make hair straight. On the other hand, 2 more features within a straightener help work it differently in different situations and more effectively. How does a flat iron work? – To answer this, we need to go over the functions of a flat iron.

Science Behind the General Operation

Flat Iron Operation Details

The iron plates are typically warmed to high temperatures, for the most part somewhere in the range of 148 and 260 degrees Celsius. When hair goes through the iron rapidly while being held tight and straight, the outrageous warmth causes the disulfide bonds to break. This breakage permits the keratin chains to move around somewhat and accept a position that outcomes in fixed hair. At the point when the hair chills off, the disulfide bonds between the keratin are changed. Since the keratin atoms are in various positions when the bonds are transformed, the hair remains in the fixed shape for an extensive stretch of time. As the vast majorities who utilize flat irons know, this strategy for fixing hair is not perpetual. Introduction to moisture makes the hair return to its previous shape.

Role of Different Materials in Flat Irons

Now you know the general science of a flat iron. But if you notice, you will see that there are few types of materials available that are frequently used in various flat irons of different brands. The roles of these materials are very important behind flat iron’s activity to your hair because they moderate its functions very effectively.

Flat irons consist of different materials work scientifically different.

Functions of Various Heat Settings

Flat Iron Heating Function

Straightener manufacturer brands include different heat settings in their products and give the users the power to control the operation of it. With these settings, people can save their hair from possible damage and use hair straightener more advantageously. There are generally 3 types of heat settings provided.

Does Flat Iron Work for Good?

Early hair straightening frameworks depended on raspy synthetic substances that would, in general, harm the hair. In 1909, Isaac K. Shero licensed the first-ever hair straightener made out of two-level irons that are heated and can be squeezed together, which is the base of the modern flat irons. But it was still harmful to hair as high heat temperature is not and never was good for hair health. But since then, scientists have worked hard to develop the flat iron as it earned huge popularity among hair fashionistas, hair conscious people. Developers initially invented ways to include various advantageous materials and heat settings to avoid hair damage and have their style done; straighten hair perfectly. So from this perspective, the modern flat iron is perfect, reliable for hair straightening.


Undoubtedly, the flat iron is one of the greatest inventions of modern science. We tried to bring up the real science behind its functions, all possible from our deep analysis. It is 110 years since the base of the present flat iron was invented, and since then, the development of the flat iron did not stop for a while. Over time, it only gets better and better. It is fascinating how this thing works so smoothly and provides people amazing results by straightening their beautiful hair.