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.
The most common reasons for perms going bad include rolling the curlers too tightly, applying excessive perm solution and using the incorrect development lotion. Regardless of the condition of the hair before the perm and the skill of the hairdresser applying the perming solution, damage to the hair is a guarantee. Anytime you apply a chemical application of any sort to your stands, damage is a given.