Yang Yi-he points out that over time, contact with sulphide carbohydrate and bromic acid salts can lead to irreversible nerve damage. In other words, while the dizziness and tinnitus can be reduced, they can't be eliminated.
楊怡和指出，染劑中的硫醣化物和溴酸鹽經皮膚接觸進到人體中，日積月累，導致神經受損，而這種損害是「不可逆」的，換句話說，眩暈、耳鳴的現象經由治療可以減輕，卻無法治癒。