How to remove yellowing from white clothes?
It’s best to first know the nature of the yellowing, and determine the type of fabric. If the yellowing is caused by rust in the water, a chemical used for removing iron from clothing can be used by following the instructions on it’s container. There are a variety of bleaches available for laundry use in the detergent section of your local grocery store, if the yellowing is simply from wear. Many bleach alternatives are also available. Always read the label on any particular article of clothing before determining your cleaning method.