Hi it is difficult to say if one can’t see the skin. But I would guess that more than anything this is dry skin. We often treat our head of hair but not the skin. Try use a light exfoliater on your scalp. Phillip Kingsley have one but a face one will do. Wash hair more frequently and condition well. Also rinse well. If still dry try a bit of moisturizer on the scalp. A relaxer will dry hair and scalp out.