A few people I know have done a few different fasts, one of them being my hubby. Any good effects from it only lasted a day or two, then it was business as usual. I think it is a lot of torture for not much gain.
Do you already drink tons of water? I'm talking like 80+ oz a day. Doing that consistently should help the bloating and probably the acne. Have to be very consistent though - every day for several months.