I got Magic Straight, which is basically the same thing. Korean's call it Magic Straight and i got it at a Korean salon. It took about 3 hrs, my poor bf came with me and he died of boredom and torture. LOL and i paid about 150 CDN, and i have long hair too. but not a lot, which cut down my price. if you have lotsa hair, and it's long...then the price is gunna go wayyy up.
I have really thin hair, and also not a lot of hair. but i got it cuz i hate frizz and using my iron daily was killing my hair. and magic straight just makes it look like you ironed it everyday without you doing anything at all. It made my hair feel soooo soft as well. less tangles too!! but the down side was that it plastered my hair onto my scalp, so i had no volume.
i do have straight hair normally anyways, so the growing out part was not bad at all. it lasted about 2 years for me. even when my hair grew out half way, the ends of my hair were still part of the chemically straightened part, so the ends weight down my hair, so it was still straight and sleek cuz it blended in with my roots. however, if you have curly hair, then your curly roots would not blend in with your straight ends. which means it won't last as long for you as it did for me.
also when you get it, you cannot wash it, sleep on your hair weird, tie it up/hair clips, put it behind your ears, or anything that may "bend" or "crease" your hair b/c the chemicals are still setting your hair straight for i think 2 days after you leave the salon. so none of that for 2 days after getting it done. I was so careful when i slept that i pulled my hair above my head so that i was not really sleeping on it. and i hardly turned while sleeping haha
i wouldn't get it again, just because i love volume. but it was a really good experience. if you have a lot of hair and can cut down the volume A LOT and still have volume even after straightening, then def. do it if it's not too $$ for you. you're hair is gunna feel sooooo soft and HEALTHY after you get it done. your fingers just glide right through your hair cuz it feels that silky and healthy!
other than that, i have nothing else bad to say about it. so i give it a
. volume is just my personal preference
HTH!