Japanese Hair Straightening vs Keratin Hair Treatment | 5 Major Differences

by Truly Beauty House
Japanese Hair Straightening vs Keratin Hair Treatment

Previously we had a detailed discussion on the two most popular hair treatments, Brazilian Blowout vs Keratin, in which we compare the two treatments on five factors. Today, we will take on another very trending hair treatment, “Japanese hair straightening.” 

In this article, we will not only talk about Japanese hair treatment but also compare it with the most famous hair treatment, “Keratin hair straightening.” So, without wasting time, let’s get into the guide:

What is Japanese straightening?

Japanese Hair straightening treatment is also popular by several names Rebonding, thermal reconditioning, and permanent straightening. This treatment is a blessing for those who have curly and wavy Hair and want straight Hair. 

The Japanese hair treatment makes human Hair permanently straight by changing the internal bond of the Hair using a special solution. The treatment lasts 3 to 6 months, depending on your hair growth and the products you use. The best thing about Japanese straightening is that it works on all hair types’ permed, bleached, curly, wavy, colored, and highlighted Hair.

Benefits of Japanese hair treatment

  • Works on every hair type. 
  • Transform you’re your curly, wavy hairs into straight hairs.
  • It’s a permanent hair straightening process.
  • Last for 6 to 8 months.
  • After this treatment, you don’t need to re-straighten your Hair with any flat iron. 
  • Make your Hair smooth, soft, silky, and frizz-free.

Japanese Hair straightening damage

Japanese hair treatment does have a bad reputation as a Brazilian blowout. If you know much about Brazilian hair treatment, don’t worry, we have another detailed guide on Brazilian blowout vs Japanese straightening; you can check that out. 

The only damage that Japanese hair treatment can cause is if you have just colored or bleached Hair.

Japanese Hair Straightening vs Keratin Hair Treatment

Now that you know about the keratin and Japanese treatments, let’s compare both and see which is the best hair treatment for your Hair that you should take. So, let’s have a look:

Keratin vs Japanese straightening: Which is healthy?

This is a very important thing you should see in a product before using it instead of using it blindly. Identify your hair type first and then read the ingredients. Whether those ingredients are good for you, do some research or consult your dermatologist.

Between these two treatments, if you want to know which one is healthy, then the answer is keratin hair treatment. Keratin contains natural oils and keratin protein, making you smooth and improving hair growth. On the other side, Japanese treatment uses a strong chemical that breaks your hair bonds and reshapes your Hair texture, so they are not healthy for your Hair.

Keratin vs Japanese straightening: Long-lasting 

Before starting any treatment, knowing which one has a long-lasting effect is essential. When it comes to the long-lasting of these treatments, Japanese hair straightening has more long-lasting results than the keratin hair straightening treatment.

It has been seen that keratin treatment lasts 2 to 3 months, whereas the Japanese treatment lasts 6 to 8 months.

Keratin vs Japanese straightening: Duration

Now, if we compare how much each treatment takes, keratin takes less time than the Japanese hair treatment. 

Keratin Hair straightening treatment takes an average of 3 hours, whereas the Japanese hair treatment takes an average of 5 hours. Depends on the hair length and thickness.

Keratin vs Japanese straightening: Ingredients

The second difference is in the ingredients. Keratin treatment has tiny molecules of keratin protein to make your Hair soft and shiny. On the other side, the Japanese treatment contains active ingredients like Ammonium Thioglycolate, breaking your natural hair bond and transforming them into soft silky, shiny straight hairs.

Keratin vs Japanese straightening: Cost 

The last difference between keratin and Japanese hair treatment is in the cost. As Japanese Hair straightening has long-lasting results and takes a very long time to its application; therefore is more pricey than keratin hair treatment. 

The average price of keratin treatment is around $100 to $200, whereas Japanese treatment costs about $400 to $800, depending on hair length and type.


  1. How much Japanese hair straightening cost?

    The Japanese hair treatment will cost you around $400 to $800, depending on your hair length and type.

  2. How to get curls back after keratin treatment?

    The best way to get back your curls after keratin is to wash your Hair more frequently. Washing will reduce the effects of chemicals and will help you restore your original texture.

  3. What is the best Japanese hair straightening product?

    Color Wow Dream Coat is the best Japanese straightening product that works on all hair types and gives long-lasting results. Also, it’s pretty affordable.


So, that was all about Japanese Hair Straightening vs Keratin Hair Treatment. Both have their advantages and disadvantages. A keratin treatment will give you temporary Hair strengthening effects, whereas a Japanese hair treatment gives you permanent hair-strengthening effects. Both are good for all hair types and lengths. 

I hope that this comparison will help you make your decision. However, if you still have any questions or need advice, feel free to ask. We will be happy to help you. Also, if you have tried any treatment from these two, share your experience with us. Thank you.

If you have any other suggestion or query in your mind feel free to let us know in the comment section or simple email us at info@trulybeautyhouse.com

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