When washing whites, use borax rather than bleach to whiten. Bleach can cause yellowing if used a great deal and will eat holes in your clothes after a number of uses. I find borax is a better whitening agent for the fabrics I wear.
Preventing Bleach Stains on Clothing
Removing Kleenex from Clothing
Cleaning Whites Without Bleach
Getting Rid of Bleach Smell
Warning About Mixing Vinegar and Bleach?
Making Sweatshirts Soft Again?