Without color; lacking characteristics which give variety. blank (Adjective). Free from writing, printing, or marks; having an empty space to be filled in; as, blank paper; a blank check; a blank ballot. blank (Adjective). Without expression.
Yes they do damage hair. Every time I have tried one ,I wound up looking like a Q-tip or my head looked like cotton. A perm will damage even more and look worse if you have been coloring your hair. There's chance of it looking okay if you don't color your hair.
RED FLAG #4 - Colored Hair. Although not as dangerous as perming highlighted hair, if your hair is colored, you may want to give more thought to a perm. It will be in your best interest to allow 2- 3 weeks before and after your perm to color your hair.