In Singapore, we call it rebonding and is very popular here. I think its unlikely you would damage your hair, but there must be a suitable interval of time before doing it again if not it'll cause damage to the hair and result in hair loss. I have done it twice, the second time eight months after the first time I did it. Also, a good hair technician is very important. If the technician is not well experienced, you could get disastrous results and then be unable to fix it until a suitable time has lasped (read: several months) as a second session too soon to the previous one is not advisable.
Originally Posted by xtiffanyx /img/forum/go_quote.gif This sounds really interesting...I've always wondered if hair would still hold a curl if this was done. Its not advisable to do that as you can spoil the rearranged bonds of the hairs (when you straightened the hair, the bonds of the hair are rearranged so the hair will fall back to place in its newly straightened state without styling or blow drying after washing) and cause the hair to curl and go haywire when you use curling tongs on it (caused by the breaking of the now straightened bonds between the hairs).