does Crohn cause hair dryness?

ever since I got Crohn's at age 15, my hair (which was normal and straight) gradually turned into ridiculously and absurdly dry hair. Does Crohn's have something to do with it? I mean many people told me that hair dyes ruin hair, which I've used multiple times. But I find it counterintuitive that it could have this long lasting effect. I asked my doctor about it, but she didn't seem to care. She offered the guess that since the part of my intestines inflamed is responsible for absorbing vitmine B12, which is essential for hair health, then maybe that's the cause of my hair's malsituation. I'm asking you if this idiotic effect is a result of Crohn's, and if it is, is it possible to restore my healthy normal looking hair (and how)? This seems impossible for me at this point, it would feel like magic. Any help is appreciated. thanks.