I read how an accutane user's lips went back to normal after juicing for a few days (I think it was 3 or 4 days), but I think his lips went back to EC after he stopped juicing. So, it seems like you need to keep it up or at least cut out the processed and junk foods after the juicing and still have a breakfast juice every day after the juice fast is over.
One important factor is that he take dandelion root or something to detox his liver n addition to juicing.