Couple things. I dealt with bacne (back acne, haha) for years without even touching anabolic steroids, but now have it under control. The best thing I have found out of everything that works is a combination of 2% salicyclic acid cream, with 10% benzoyl peroxide cream. Put it on at night and leave it. Use in the morning too if that doesent work, but once at night works wonders for me.
Alpha Hydroxy Acids, specifically glycolic acid, can peel away alot of skin damage including that caused by acne.
If you get a red inflamed papule, put ice on it for several minutes to reduce the inflammation. You will see improvement the next day.
If you have a pustule (a "ripe" zit) sterilize a needle, and insert it directly into the pore of the pimple, at the same angle of the surrounding hairs, about 1/4 inch. work it from side to side to open the pore, then gently squeeze it out. Then, put ice on it.
You have to get the comedo out, it looks like a little seed. If you just get pus you did not get to the root of the problem. Assuming you got the comedo, the lesion will quickly resolve itself. Unless it is "ripe" leave all other pimples and whiteheads alone. Blackheads are ok to extract with an extractor.
You might want to pickup a book called AcneRx for further info.