Yes, acne is a very frustrating thing to have to deal with !!! In the past, I have used Tresaderm(from the vet). I usually keep the area clean with daily light scrubs with hydrogen peroxide. When things act up and the black debris appears, I have found succes by scrubbing(lightly) with a cotten ball that has water and Aveeno's Positively Radiant Cleaner. I had some left in the bottle that I was using and it did help.Of course, be sure to rinse off the chin. I would use a piece of a paper towel with water on it. I have on cat, Tina Peepers, whose acne(really bad) was caused by food allergies. That is being treated by a special protocol by a Dr. from California. She is now on 2.5 mg of Prednisone every day and the acne is under control. GOOD LUCK!!