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.
Whether you color your hair at the salon or at home, you are risking damage to your hair. Perm salts and permanent hair dye chemicals together create an extremely harsh environment for your hair-- some people may experience only frizzing and dull, dried-out hair, but others must contend with breakage, excessive shedding and even scalp irritation.