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Hair Iron (Straightener)

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What is Hair Iron (straightener)?

A hair iron or hair tong is a tool used to change the structure of the hair using heat. There are three general kinds: curling irons, used to make the hair curly, straightening irons, commonly called straighteners or flat irons, used to straighten the hair, and crimping irons, used to create crimps of the desired size in the hair.

Most models have electric heating; cordless curling irons or flat irons typically use butane, and some flat irons use batteries that can last up to 30 minutes for straightening. Overuse of these tools can cause severe damage to hair.

Curling irons, also known as curling tongs, create waves or curls in hair using a variety of different methods. There are many different types of modern curling irons, which can vary by diameter, material, and shape of barrel and the type of handle.

Straightening irons, straighteners, or flat irons work by breaking down the positive hydrogen bonds found in the hair's cortex, which cause hair to open, bend and become curly. Once the bonds are broken, hair is prevented from holding its original, natural form, though the hydrogen bonds can re-form if exposed to moisture.


History of Hair Iron:-

In 1872, Marcel Grateau (a Parisian) used heated rods to straighten or style hair.

Simon E. Monroe patented a hair straightener in 1906 that was like a metal comb.

In 1909, Issac K. Shero patented a hair straightener made of two irons that are heated and put together around the hair.

Years later, Sharrell made heated metal tools, for example: hot combs. The hot metal straightener went easily through the hair, making less damage and dryness than the way things were done before. Later, ceramic and electrical straighteners were made, meaning people could adjust the heat settings and straightener size.

Another method of hair straightening is Japanese hair straightening, which was invented in Japan, and works like a perm, but to straighten instead of curl the hair.


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How Hair Iron work?

Hair straighteners work by breaking the hair's hydrogen bonds, which are what make the hair curly. After the bonds are broken, the hair is stopped from going back to its original, natural, curly form. The hydrogen bonds can re-form if moisture touches them, such as water or dampness.

Hair straighteners should only be used on dry hair, unless they are specially made with vents to let the moisture out. These sorts of irons are usually called "Wet Dry" irons.

Based on the materials used in the heating plates, hair irons can be classified as ceramic, tourmaline and traditional metal flat iron. Ceramic hair irons are believed to be gentle to the hair.


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Effects of Hair Iron on human:-

1. They make the hair dry and make it brittle.

2. The hair can get extremely damaged and in some cases they get burnt also.

3. Have complained of a headache, loss of hair, due to the high temperatures of hair breakage.


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