If you don't have tecnu or zanfel (worth it, but why the F@#K do they have to charge $40 for a one oz. tube????) a capful of bleach diluted in @ half a cup of water or even straight bleach with just acouple drops of water applied topically every hour or two helps to dry it out, but I wouldn't do it for to long or use just that. i go for the kitchen sink theory- everything but the... -whatever it takes. previously i have tried Jewel weed (the herbal antidote) orally and topically, white clay, tecnu, homeopathics, antibiotics, topical steroids, tecnu, brown soap,.......
it all helps, but none are good enough by themselves.
the most success i have had (without having tecnu or zanfel on hand immmediately) was to use bleach topically, use zanfel every time i shower, (i think it's important to shower often,[in general], and so that caustic shit has less time to build up and spread.) and i also had some clobetisol- the heavy-duty topical steroid- which i started with asap, and went to the dermatologist right away, got more of that shit, and prednisone, and some other antibiotic, and it never even got to the point where it was open.... it still sucked but was no where near as bad as when i have gotten it previously.
i always try to avoid using western medicine,like antibiotics and steroids, and if possible, and use chinese herbs and homeopathics, (even though i work EMS and administer some heavy duty drugs on patients- if they get them, they tend to need them, though.)but in this case, it is the best way to knock it out quickly.