Try caladryl lotion to dry up the blisters. The steroid cream seemed to work for me. I got it three weeks ago and now it just looks like pink peeling skin and some brown spots that I am using a Rx skin bleach cream for. I have to go back to the doctor in 3 weeks for a check up.
I'd say that the actual rash lasts 2 weeks but healing can vary. I happen to have sensitive skin. I don't anticipate this to be completely healed until the end of the month. It doesn't look too bad though. I still get very upset over it but you just have to be patient with it...I'm trying to be. I know it's not easy.