Tips about removing stains from tee-shirts

Question

I work in construction and I need a question answered about stains that develop in the underarm of my tee-shirts. The stains are very dark and make the cotton of the tee-shirt stiff and rigid. I have gone through many tee-shirts and I just want an easy laundry method to remove the stains. I've used things like spray and wash, but it doesn't help. What is causing the dark stains? Is it my anti-perspirant? What can I do to prevent this result in tee-shirt that don't have it? What can I do to remove the stain from those that do?

Any help is greatly appreciated.

Answer 1

try soaking them in iron out...my husband has done this and they come out a beautiful sparkling white....

Answer 2

apply talcum powder and keep overnight.. soak in a bucket of water with lime in it.. works well

Answer 3

Try rubbing in dawn dish soap (i have used other brands as well) and letting it sit for at least a few minutes before washing