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About the Causes of Curly Hair and How to Improve It

MOMO Plastic Surgery · 모모성형외과 · March 9, 2023

About the Causes of Curly Hair and How to Improve It Even though they have never had a perm at a salon, many people around them naturally have curly hair. In Korea, about 53% of th...

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This page is an English translation of a Korean Naver Blog archive entry. For exact wording and source context, verify against the Korean archive original and the original Naver post.

Clinic: MOMO Plastic Surgery

Original post date: March 9, 2023

Translated at: April 24, 2026 at 5:02 AM

Medical note: This translation does not guarantee medical accuracy or suitability for treatment decisions.

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Even though they have never had a perm at a salon,

many people around them naturally have curly hair.

In Korea, about 53% of the population is said to fall

into this category.

It is often said that the main cause of curly hair is

genetic, but in some cases it can also appear for

acquired reasons. Many people are trying to improve

it by using various methods to change their style.

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The cause of curly hair can also be determined by

genetics, because compared with straight hair, it can

be said to be a dominant gene. In such cases, it is

easily inherited, so there are many instances where

it naturally appears even without getting a perm.

Next, it may appear as the body changes due to the

changes in sex hormones during puberty, and there

are also acquired reasons caused by underdeveloped

hair growth.

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It can also occur when stress from daily life or

irregular lifestyle habits create problems in the

body’s hormonal balance. If the pores on the scalp

become clogged with various waste materials and

pollution, natural hair is compressed and twisted,

which can be one of the causes of curly hair.

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For people with this condition, there are drawbacks

such as hair that looks dry and rough, and daily care

can also be difficult. Since the keratin growth rate in

the hair follicle is slower than in existing natural hair,

using straightening products or treatments may make

the condition worse, and damage may occur to the

point that it is difficult to recover to the previous

state. However, many people want long, straight hair.

Let’s look at what options are available to improve it.

As mentioned earlier, there is the straightening perm,

which uses chemicals to change hair into straight

hair. However, after receiving this treatment, it does

not remain permanently and its effects gradually

decrease, so it can be difficult to improve the issue

fundamentally. It can be said to be a method that is

relatively usable when the condition is mild.

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Next is hair-realignment correction, which can be

described as a method that uses heat with chemicals

or a flat iron to change natural hair. If this process is

used, the currently grown hair can be expected to

recover semi-permanently, but there is a problem in

that when the natural hair falls out and grows back,

it may return to the previous condition. It also affects

the hair more than the straightening method, but it

has the characteristic of delivering high results. It can

be a good option for those who are stressed by severe

symptoms and are looking into the causes of curly

hair for a change.

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When caring for it, the important things to pay

attention to are what shampoo to use, how to wash

it, and how to dry it afterward.

When choosing a product, using a mildly acidic or

scalp-care type can help prevent strong irritation, so

it is important to look into it carefully before

purchasing. When washing, you should first wet the

scalp with water, which can help loosen various

impurities attached to the hair. You do not need to

create a lot of foam, and rather than rubbing the

scalp with strong force, it is recommended to wash it

as if massaging it with your fingertips. After rinsing,

supply moisture with a treatment, remove the water,

wait until the ingredients are absorbed, and then

rinse thoroughly.

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It is also necessary to dry it thoroughly. Wrap the

hair with a towel to prevent moisture from escaping,

and it is best to start drying from the ends of the

natural hair. After that, use a hair dryer to dry while dispersing the heat rather than concentrating it on

one area. When you judge that it is about halfway dry,

continue drying while combing through the hair with a

brush, and then finish with cool air at the end. This

can make the hair feel smoother and may reduce the

symptoms.

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If the cause of curly hair is congenital, there is no

solution other than a temporary corrective method.

If it is acquired, you should wash your natural hair

frequently to prevent waste from accumulating in the

pores, and your usual eating habits should also avoid

greasy foods and include meals with various nutrients.

Also, getting enough sleep can improve the body’s

immune strength, and if you are under a lot of stress,

it may also help to resolve it through your own

methods of relieving it.

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The cause of curly hair is usually often genetic, and

as a way to deal with it, many people have changed

it through rebonding or hair-realignment correction.

However, these days many people are paying

attention to care methods that can be done in daily

life using shampoo, towels, and drying. If you are

concerned about hair damage due to chemical-based

treatments, it may be helpful to learn about various

care methods you can do regularly and keep up with

them consistently to protect healthy hair.

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