I have a pair of natural rubber dishwashing gloves. These particular gloves were brand new but sitting loose out of the package on top of the supplies under the sink.
I pulled them out today & found that one of them had developed small blisters all over the hand area, covering about four square inches. The blisters are not really concentrated in one area, although there are more along the thumb-forefinger. They are about two millimeters in diameter, some go in and some go out.
The only chemicals under the sink are vinegar, Bon Ami (mostly crushed limestone), Goo Gone (tried it; did not cause the blisters), liquid dish soap & detergent. I can't think of anything hot enough to cause that blister pattern that would have been down there. Any ideas? I'm totally stumped.