Restore Stained And Yellowed Towels
After several uses, linens can appear blotchy or yellowed. While they are still perfectly fine to use, they may not look very pleasant. Washing with regular detergent doesn’t help brighten the color, but all is not lost. You can use salt to brighten the fabric’s colors, but be aware that this only works for single-colored linens such as towels.
Combine ½ cup each of vinegar and salt into ½ gallon of water and boil the towels in this mixture for an hour. Or you can add ¼ cup salt into a gallon of hot water and let the towels soak for 48 hours. Rinse thoroughly and dry as usual.