What do you know about japanese hair straightening?

I just recently heard about it, so how is it different from other types of perminate hair straightening, whats the upkeep like, can i scrunch my hair after having it done, and how bad is it for my hair? Anything you know please tell me....

What do you know about japanese hair straightening?

Here's Straight talk,Its natural Ion complex to penetrate each hair shaft,infusing it with moisture,energizing strengthening and restoring the hair from the inside out.It takes just a few hours.You can't really scrunch hair after this process is done.The hair stays straight until grows out,touch-ups are required.

What do you know about japanese hair straightening?

since all japanese are born with straight hair, i am sure that they don't know anything about making hair straightener

What do you know about japanese hair straightening?

I know that it's expensive (a friend did it for $800), but it works for like 4-6 months. It's like always straight even in humid, disgusting weather.