Hi S.,
I had my hair straightend using the Japanese-style, not sure exactly what that means, but I understand it is quite different from what, not sure the pc term for this is but here goes...black people with very kinky hair use. My sister-in-law is Korean and she says that many Japanese and Koreans do this process. I am part Hawaiian, part Caucasian and have very thick, wavy hair about 4 inches below my shoulder-it takes over an hour to blow-dry and nearly an hour if I use a straightening iron.
I had this process done in Hawaii ( I heard it was much cheaper there, about $180 ) and LOVED it. It lasted nearly 2 years because as my hair grew out, even though I could still feel the wave at the roots, my hair was so long and heavy, it weighted it down and I only supplemented with a straght iron. After having it done, I couldn't wash my hair or put any clips or rubberbands in it for about 24 hours-I don't remember exactly. It is straight wet and then dries straight. Sometimes I would use a straight iron to curve the hair around my face so that it framed my face and didn't just hang straight down, but mostly I wore my hair back or up depending on how hot it was.
Having it straight helped when I wore it down because it didn't tangle, which is normally a problem for me and it had a really nice shine that can't often be seen with wavy hair. I did not find that my hair 'felt' damaged or dry, but actually really silky smooth.
I would love to have it done again and being new to the area, will follow this thread to see what else you find out. I don't know of anyone around here that does this type.
Good luck and by the way, my hair appointment, when I had it done, took about 4 or 5 hours for the whole process. The time and money spent was well worth it because of all the time and money that I actually saved from not having to 'do my hair' every day. I would gladly do it again. :)