I am surprised, but with the second try, Jewel weed really seems to be drying up the blisters. What I did this time was get a bunch of the leaves and put it into a food process, and added a little tiny bit of water to it (I think last time it was too dry). Made a somewhat sticky substance, with a tinge of green.
For those who are interested in what it looks like, I found a great link:
http://www.jaxmed.com/articles/Diseases/jewelweed.htm