I've been using persagel 5 for 12 days now on the areas of my face that are prone to breakouts, like my chin and under my nose. I'm seeing lots ofdead skin sloughing off which I know is a good thing, but having cystic breakouts at the sides of my chin and corners of my mouth. Today was the first day I woke up with no new pimples.

Is this a typical purge from the benzoyl peroxide? Any idea how long it takes for the skin to purge out all of the gunk when using BP?