I am using Efudex and have used it before but I am never sure when to stop. My doctor said to use it once a day for three weeks. It seems certain spots get red and some scab up but after I stop using the Efudex, the spots don't really go completely away.
I hadn't heard of this before, but when I go out to their web site, it indicates the product is to be used twice a day for several weeks. What does your doctor say when you have completed the course of treatment?