How To Soften Bed Sheets. Iron the sheets on low setting. If the top comfort layer is memory foam, warming up your bed can soften it as well.
In fact, less can be better. No matter how new or old your sheets, give them a dose of extra softness with 1/2 cup of white vinegar added to the wash cycle along with your usual laundry detergent. If the top comfort layer is memory foam, warming up your bed can soften it as well.