Preventing Yellow Stains?

I just read in the magazine called "Real Simple" that to prevent yellowing under the armpits of your shirts you should sprinkle the underarm area of the shirt with baby powder and then iron it. It's supposed to put a layer on the shirt that won't be able to be seen and it will prevent yellowing. I haven't tried it yet but thought I might tell you about it. If your shirt is a micro fiber which it sounds like it might be, you could iron it with a towel on top of the shirt so that you don't burn the shirt. Good luck and hey, I hope it works.

Biz is an enzyme that will remove those organic stains. I think I have also heard that peroxide or baking soda will work on those but you might want to search the Internet for more information about that.

yo sould get that one secret extra strength that you are talking about and put it in a clean sponge. after you put it on the sponge scrub the spong on where you like need to if you know what i mean and it shold come off

Spray Shout on it when you take it off.