Others change them once a week. Others every 15 days. And there are those who change sheets once a month! However, as the experts point out, there is a certain period of time that you have to change your sheets together and the pillowcases.
And the right thing to do is to change once a week. This is because many bacteria, germs and millions of dead skin cells accumulate in the covers. But beyond the regular change, experts point out that to avoid the accumulation of bacteria, it is advisable to buy special cases for the mattress, pillows and covers.