Dry skin can cause zits just as much as oily skin, just the dry skin if it has micro cracks the dirt gets traped runs into the pores and then you can't wash it away. You should use some type of moisturiizing soap, and maybe even a mud mask every once in a while to keep the skin hydrated as well as pull out any dirt and that should help. Also make sure you get that area really good after you workout, sometimes it's easy to miss a spot when your in a hurry and trying to run off to work. Also your makeup could be causing this, if you switched lately or have been trying to cover up the zits. Also make sure you dab that area every now and then threw out the day. This will help keep any sweat or oil that the zits may be pouring out from getting into another pore.
Also it could be your over cleaning that area, your current soap it too tough. I ended up doing that as a teenager, I'd get the toughest stuff like oxy and it would be over clean and would make me break with little zits that were just bumps but then oen would puff up as a real zit and it would be like twice as big as a normal zit, or anyway it seem liked it at the time. I quickly learned to stop using the oxy stuff.
Good luck,
Kit
