YUKO Japanese Straightening
This is a popular process for making hair straighter that uses a hot, flat iron to permanently alter the hair into a new, straight shape. The hair that is treated will remain straight permanently, while new hair that grows in will do so in its natural state.
The average treatment time comes in at up to 4 hours, although this depends upon the length, type and condition of the hair being worked on. The regularity of touch-ups depends upon how quickly new hair grows in, with between 4 and 6 months the typical length of time between YUKO Japanese Straightening treatments.
As well as straightening your hair, this process is also about giving it a healthy shine while avoiding causing too much damage. In this way, it is an improvement on the traditional approach of using straightening irons at home.
However, if you have thick and very curly hair then you may wish to look at the other processes that are gentler on your hair. Also, if you want to retain volume, then another method, such as the Brazilian Blow Dry Treatment or Kerastraight would allow you to retain and increase the natural volume of your hair.