How can I make my white clothes whiter?

There is a 'Bluing' agent that actually brightens your white clothes. Look for it in the detergent isle in the grocery store.

What about trying the old fashioned bluing? Comes in a small bottle and follow the directions. Your whites will be slightly blue while they are wet but they will turn white when they dry. My grandmother used to mix it and rinse her white poodles with it after their baths. Imagine light blue poodle dogs running around! But they whitened up as they dried. The country school my son went to used bluing on the white chickens they were showing at the fair...they used too much and got a prize for their most unusual blue chickens!

I soaked all my whites in oxiclean overnight and they all came out bright and the yellowing under the arms came out also!!!

1/2 cup oxiclean dissolved in warm to hot water, enough water to cover the clothes in a bucket.

maybe use baking soda, like they have at the grocery store, and some bleach is the best i can think of

hang them outside in the sun to dry and then fluff in the dryer

amaze, it says it is for babies but it works great.

bleach maybe