approx 7-10 days, possibly less

As soon as I started fasting, I stopped breaking out. Mine has a lot to do with diet and colon health. I do enemas every day or every other day on my fasts, and I think that had a great impact, along with nutrition of the MC. My issue is that my face's splotchiness takes a little longer to get rid of. But it all comes in time. Give yourself a lot of water, and some time in the sun to help dry the bad stuff out a little, while keeping your skin hydrated. Someone recommended making a paste of baking soda and water and putting it on your pimples, allowing it to dry before washing it off. I haven't tried that, but It could work. Who knows.