Yuko Hair

The original Japanese hair straightening

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Step by Step

The treatment

Every salon has its method, but these are the general steps to permanent hair straightening


A stylist will check you hair type, chemical history, dryness and damage level.

Shampoo & Pre-treatment

The hair is washed and the appropriate pre-treatments are applied. The pre-treatments prepare the hair with the necessary nutrients for processing.

The process

The product is applied 1 cm from the scalp and left to saturate the hair.

Before using the Yuko solution, the hair has a pH of 4.5 – 5.5. During the processing of step 1, the pH increases to 8-9. The hair is now relaxed and 80% smoother. The hair has very little elasticity and stretches very easily when you do the elasticity test – the hair is now ready to be rinsed.

Rinse out the cream

The solution is rinsed off completely. The hair receives heat protection and is blow-dried.


Ironing with a straightener creates a permanent straight shape.

It’s important to pay attention to fine sections, which is crucial to keeping the hair permanently straight. In total, each section is straightened 3 times.

Neutralization and styling

By applying the neutralizer, the straightened hair is conditioned and finalized. After rinsing off the neutralizer, the hair is blow-dried.

The Result

The time required for Yuko straightening is 5.5 hours and my price is €385. In international comparison, a realistic price of 500-550 €/US$/£ is calculated for this treatment. This price corresponds to the standard for other permanent hair straightening products if you want to achieve a perfect result. Although there are cheaper providers, they often do not pay attention to fine sections, which is crucial for the hair to remain permanently straight.

The follow-up treatments will take approximately 45-60 minutes less time.

No matter whether after 3, 6, 9 or 12 months. The hair undergoes the same treatment as the initial treatment, the areas that have already been straightened receive a controller to protect these areas.

Alternatively, the smoothed areas can also receive a Hair Botox treatment at the same time.

Every Yuko customer can be sure that her straightening will only be carried out by an expert.

Before stylists can purchase Yuko products, they must first receive solid basic training and hand-on training at the Yuko Academy London. That’s why Yuko is not so common in Europe.

This Yuko hair straightening is world famous, which is why Yuko is often used as a synonym by many stylists, even though these products are not available!

To find your nearest salon in Europe, simply visit the Yuko-Europe salon locator page.

Aftercare tips

However, this thermal reconditioning also gives customers the illusion that their hair is healthy again, and many tend to neglect their hair after the procedure.

In fact, the hair now needs care after every hair wash to ensure it maintains its healthy appearance.

Immediately after thermal reconditioning, the hair must remain dry and smooth for 48 hours.
You now have to absorb oxygen for 2 days; you can straighten it with a straightener.
The new shape is only completely fixed after 48 hours.
That’s why you shouldn’t wear a ponytail, and you should also avoid tucking your hair behind your ears, as this could lead to kinks.

What makes Yuko  different?

For beautiful, smooth and permanently healthy hair, the focus is on Yuko straightening the hair without compromising the health of the hair. During post-treatment, all areas that have already been smoothed are first treated with the Yuko Controller in order to avoid further chemical treatments in these areas. The Yuko Controller protects the already smoothed areas and prevents the cream from working on these areas again.

It is crucial that the straightened areas are carefully protected to maintain the health of the hair. Root smoothing is a sophisticated technique that shows whether the stylist has mastered his craft.

The smoothing product is then applied at a distance of 1 cm from the scalp. It is only applied to the new growth.

If you’ve had hair straightening experiences where the first treatment was perfect, but subsequent treatments caused damage to the already straightened areas and left the hair dry and brittle, then those areas probably received another unnecessary chemical treatment each time. This is not the case with Yuko!


Due to this high level of damage to the hair, Yuko Thermal Reconditioning is no longer possible! Regardless of how long ago it was bleached, these areas can no longer be treated!
Do you have High Lights?
A mixture of lighter colored hair mixed with the natural hair color cannot be treated because the hair has different needs.

Henna and plant hair color is a natural hair color that is extracted from the leaves. In contrast to chemical hair colors, henna does not penetrate the hair, but rather wraps itself around the hair strands. This creates a protective layer on the hair. This protective layer prevents chemical hair treatments from working properly or producing unwanted results. The chemical substances cannot penetrate the hair because the henna layer is in the way. In addition, there will be unpredictable reactions between the chemical substances and the henna, which can lead to chemical hair burn or uneven color results.

There are many salons in the United States, Australia, England, Japan and South Korea that offer Yuko services. But there are very few salons in Europe. Every Yuko customer can be sure that her straightening will only be carried out by an expert. Before stylists can purchase Yuko products, they must receive solid basic training and hand-on training at the Yuko Academy London. That’s why Yuko is not so common in Europe. This Yuko hair straightening is world famous, which is why many stylists often use it as a synonym, even though these products are not available! To find your nearest salon in Europe, simply visit the Yuko-Europe salon locator page. https://www.yuko-europe.com/salon-locator/ Yuko Academy London

Yuko Thermal Reconditioning typically takes between 4 to 6 hours, but may take longer for very thick/natural hair.

Hair that is treated with YUKO will remain straight almost permanently. However, new hair will grow according to its natural texture. We recommend that you get YUKO touch-ups every 6 to 8 months, but the interval will vary depending on your natural hair texture and how quickly your hair grows

You can wash or wet your hair 2 day after this treatment is done. Blow dry 100% after shampooing every time to maintain straightness

The solutions used for YUKO Hair Straightening permanently straightens the hair. The solutions work by physically changing the internal structure of the hair. By applying heat with a flat iron, it creates a permanent straight shape.

Yes. YUKO solutions does not contain any chemicals that produce formaldehyde or any other cancer-causing substances.

For beautifully straight, permanently healthy hair, the main focus is that Yuko straightens the hair without ever attacking the health of the hair. During post-treatments, all smoothed areas receive the Yuko Controller first to avoid further chemical treatment for these areas.

The YUKO process is not just about straightening hair, it also re-texturizes your hair to a healthy shine. Correct application by a trained and experienced stylist will give you the results you desire. Make sure you consult a stylist experienced in YUKO hair straightening if you have any concerns.

Yes, YUKO hair straightening works on all hair types. Although we do recommend taking extra cautions when dealing with highlighted and damaged hair. The best candidate for YUKO hair straightening is healthy virgin hair or hair that has been colored by a stylist with single process color. (not home color)

No. Color your hair at least 2 weeks before or after the straightening procedure. Applying both chemical treatments simultaneously will result in hair damage, so do them separately to avoid undesirable results.

If the previous hair straightening procedure uses the same chemical (Ammonium Thioglycolate) as YUKO straightening solutions, applying YUKO will not be a problem. Please contact both companies to make sure chemicals are the same. Even if both use the same chemicals, the YUKO hair straightening process may not fully work if the hair is badly damaged already.

No. We do not recommend getting YUKO hair straightening except on new growth. Please wait 3-4 months until the relaxer/Brazilian/Keratin Treatment coating is completely off your hair to get YUKO hair straightening.

In addition to being a state-of-the-art hair straightening system, YUKO hair straightening is also a recognized technique of restoring health to the hair. The YUKO Hair Straightening procedure holds a patent in the US, as well as in Japan, New Zealand, Turkey and other countries.

YUKO Japanese hair straightening permanently straightens hair by physically changing the internal structure of hair. Brazilian/Keratin treatment temporarily coats hair with keratin to smooth hair. Brazilian/Keratin treatments will wash out in average 3 months, so you must visit a salon often to re-coat the hair with this method. Brazilian/Keratin treatments may contain hazardous chemicals which release highly carcinogenic gas. For more information on the danger of chemicals, please check OSHA Safety and Regulations.

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