Beach Towel To Protect Pillow

Hubby has oily skin and, being bald, he has no hair that absorbs at least some of the oil on his scalp. Changing the bed pillow case every day wasn't a big deal but I really didn't like the soiled pillows that became dirty and smelly. I bought several used beach towels at the Thrift Store and made them into pillow cases that I put over the pillow to protect it before slipping on the pretty top pillow case. I still change the top pillow case every day; the underneath towel pillow case is washed once a week and the pillow itself remains clean. I suppose this would work well too for those that have "sleeping sweat head".