I read about a product called Deo-Go and decided to give it a try. It claims to remove anti-perspirant stains, even if they've been set in for a while, or they'll give you a refund.

I have to say, I'm impressed. It did a nice job even on some stains that have been around a long time (on layering pieces that never get seen on their own, but that have been washed and dried many, many times.)

Devotees of the Brooks Brothers shirts, this product could be your best friend!