White linen items, such as fancy tablecloths, are also prone to yellowing. If yours have yellowed while in storage, brighten them up before your next dinner party by adding 4 tablespoons baking soda to the wash water. You can also boil yellowed cotton or linen fabrics in a mixture of water, 1 tablespoon salt, and 1/4 cup baking soda. Bring to a boil and soak for an hour. Then launder as usual.
If you have linen, wool, or silk items that need to be hand washed, prevent them from yellowing by adding 1/2 cup vinegar to the rinse water.