Question: how often you should wash your bed sheets according to a microbiologist?
Answer: Laura Bowater, a microbiologist, recommends washing them once a week at a minimum of 60c to destroy bacteria. 'Dry sheets and pillowcases in direct sunlight if you can, as UV light is effective in killing micro-organisms. Run a hot iron over pillowcases on the cotton setting (200c) to kill any leftover bacteria.