I took Sunny to the vet today for his annual exam and asked the vet about his feline acne. He prescribed an ointment called Bactoderm. It's actually a dermatologic ointment for dogs but it can also be used on cats. He said that his cat had feline acne much worse than my Sunny's and that the Bactoderm cleared him up. I have to apply to the affected areas 2 times a day for 5 days. I'll let you know how it works.