It is recommended to wash your silk pillowcase regularly.
Regularly washing is the best way to protect your silk pillowcases, which is used to cover the pillows. It is very easily to clean silk pillowcases. Oils, dirt, grime, and saliva can lead to breakouts and irritate skin. After a week, you will find there are some junk on your pillowcase.
To prevent breakouts, you should wash and change the silk pillowcases regularly. Therefore, you can enjoy your slumber.