What is Japanese hair straightening?

Question

I saw it in the listing of services at a salon website, and saw japaese hair straightening. It costs $300 an hour, What is it, and why does it cost so much?!

Answer 1

its permanelty straightening your hair.

Answer 2

its permanent straightening that lasts 8 months - 1 year.

i got mine for a really great deal, $100 PLUS haircut!

its useful for very unmanageable and thick hair

or

for people who straighten their hair everyday

Answer 3

A Japanese thermal hair straightener will give you permanently silky straight hair that won’t wash out, even after a year. The only upkeep you need is to touch up the roots as your hair grows out. It’s a maintenance-free solution to wavy, curly or frizzy hair, and one of the safest options out there.

it is expensive because it won’t wash out for a long time  

Answer 4

Curling and straightening are normally chemical processes that  alter the arrangement of the protein bonds in the hair. Your genetics are what cause your hair's shape/texture, and because you can't alter that, results will be temporary. They should last until the hair that WAS straightened grows out.

Some thermal processes may last shorter amounts of time.