How do I know if my hair is too porous to be permed? | Sally Beauty

How do I know if my hair is too porous to be permed?

Do the "dunk" test by taking a small snip of your hair and immersing it in a glass of water for about 1 minute. If the hair sinks to the bottom of the glass, your hair absorbs moisture too quickly and is too porous to perm. If the hair floats near the surface, it is safe to perm.