Benzoyl peroxide / clindamycin
"Amazing! Currently on doxy and onexton. To keep this short I will say I've been on tons of other creams and gels and even accutane twice and nothing has worked this quick for me. 
My current combo has significantly flatted out my spots in a week. I am still getting a few new ones but I dab some onexton on there and bam. Within 24hrs those pesky spots either shrink or come to a head. I usually have to wait weeks for those under skin ones to go away but this stuff clears them up in a day or so. Yesterday morning I felt a new spot coming up and by nighttime it was gone. Crazy!"