Dear Heloise: Like a number of my friends who are large-breasted, we have a daily problem year-round of sweating onto the band of our bras. About a year ago, I used one of my 12-by-8-inch disposable moist washcloths. I let it dry out, then folded it lengthwise so that it fit snuggly under the bottom of my breasts. It absorbed all the moisture.