Will my hair wave up again after I straight it?

Yes it will, but the more you straighten the hair the more you will lose the pattern. It is important to remember that the hair is not attached to any cuticles so it no longer is receiving any nourishment, so if you continuously straighten you will relax the pattern just like you would with your own hair.

(Note – The hair may lose some of the curl pattern with constant blow dryer, so just let it natural dry.)