My husband has oily hair and has left the pillowcases yellowed. How do I make them white again and do I soak them (how much and how long) before washing? I’m afraid this has built up over time.
This is quite a problem, not just because of the oil build up, but also from the likelihood that these pillowcases have been going into a hot dryer following each wash cycle. Heat from the dryer can “set” stains, making them very difficult to get out. However, with a series of soaks you should be able to whiten the pillowcases substantially. I would pre-soak several times with a couple of different products so you can solubilize the oil, as well as break up and remove residual body soil. It’s best to work on the oily residue first:
In the future, make sure you always wash your sheets and pillowcases using hot water, a good detergent that contains enzymes, and ¾ cup Clorox® Regular Bleach2. Pretreating the area of the pillowcase that gets oily with a little liquid laundry detergent before washing will also help keep the oil build-up under control. Good luck!