hi and thanks for the query, water that goes into the ear during shower dries up in no time. it does not cause any harm. your husband seems to have some other ear problem. it could be ear infection and discharge which you may have mistaken for water in ear. please see an ENT specialist to come to a diagnosis. till then keep the ears dry and do not try to clean the ears with buds or any other thing. regards, Dr Rajksihjori.