What is Japanese hair straightening treatment, Yuko System?

What is Japanese hair straightening treatment, Yuko System?

What is a Japanese straightening?

Japanese smoothing, also known as the Yuko System, belongs to the category of permanent straightening or smoothing. Unlike Brazilian smoothing, it is not a treatment, but a process intended to permanently stiffen the hair.

It is considered one of the most aggressive straighteners on the market today.

Like its little brother, Korean straightening, Japanese straightening relies on the application of a product designed to break down and deeply condition the hair's natural structure to eliminate frizz.

It is used after opening the hair microflakes with a special shampoo. Then the product is fixed by heating the ceramic heating plate (hair straightener).

What are the ingredients of Japanese straightening?

Japanese straightening is divided into two stages, the first stage is a thiol type straightening. This is achieved with a cream containing ammonia and thioglycolic acid.

These two ingredients remove about 30% of disulfides, those small atoms that bind keratin and give hair its structure.

Ammonia is a product widely used in hair care, especially for coloring and smoothing. Here it acts as an alkaline reagent necessary to activate the action of thioglycolic acid.

Ammonia is undoubtedly one of the most effective ways to change the structure of hair. Its main disadvantage is the very strong smell and the fact that it is very volatile.

The creams used in Japanese fabric softeners also contain silk protein, whose main function is to protect the hair to compensate for the action of two other rather aggressive ingredients.

Silk protein envelops and strengthens the hair. They help retain moisture in the hair, keeping it moist and soft even after straightening with chemical compounds.

Who can do a Japanese smoothing?

Japanese straightening is suitable for all hair types, whether they are naturally wavy, curly, frizzy or even frizzy. The result will be the same for everyone, namely very straight hair, similar to Asian type hair.

Japanese straightening is possible on short hair, male or female, as long as the length is at least 4 centimeters.

Japanese straightening can also be done on colored hair. On the other hand, it is not recommended on highlighted or already weakened hair. Indeed, for Japanese straightening, quite aggressive chemical compounds come into play and could further damage the hair fiber.

Finally, Japanese smoothing being a permanent smoothing which aims to modify the very structure of the hair, it is not recommended for children and adolescents under the age of 15. Their hair has not yet reached its final shape, the Japanese straightening could compromise their good regrowth and their good development in the future.

Because of its chemical components, Japanese smoothing is also not recommended for pregnant women.

What are the precautions of Japanese straightening?

As with all straightening procedures, whether Brazilian, Korean or Japanese, special care should be taken in the first few days after the procedure.

For Japanese straightening, do not tie your hair or stick hair clips in it for the first 48 hours. The risk is that your hair retains the shape created by the rubber band or clip.

The first two days you also need to avoid humidity, so do not wash your hair.

If your hair accidentally gets wet, for example from rain, you can catch up by using the straightener on the appropriate section.

What are the results of Japanese straightening?

The results of Japanese smoothing are truly amazing, everyone agrees. Whatever the nature of your hair, it will be smoother than ever.

Smooth, waterproof and moisture resistant, meaning you can take a shower, go to the pool or the sea, sweat in the gym, dance in the rain.

The healthier your hair is at the start, the more successful the result will be from an aesthetic point of view. Indeed, already damaged or weakened hair can become more brittle and dehydrated.

Professional hairdressers should also refuse Japanese straightening if your hair is too damaged.

How to maintain a Japanese straightening?

As with any straightening, it's best to customize the products you use to keep your hair healthy.

Therefore, avoid shampoos that contain sulfates or sodium, which can affect the smoothing effect and the health of your hair.

You can also regularly apply keratin to your hair. This naturally occurring protein in hair will keep it supple and shiny over time.

What are the benefits of Japanese straightening?

The main advantage of Japanese smoothing is that its perfect smoothing remains for a long time: already after 6 months, the first touch-ups at the root are essential, and the length remains as rigid as before. It works on even the thickest or curliest hair, such as afro curly hair, and lends itself very well to Japanese straightening.

Another advantage of Japanese smoothing is the high concentration of silk proteins in smoothing products. They protect the hair from ammonia and thioglycolic acid, making it strong, soft and shiny. Contrary to popular belief about Japanese straightening, it is not really dangerous for the hair.