Cure Together has acne treatment statistics: Comparisons of the effectiveness of about a dozen treatments. Only two treatments rate high for effectiveness and both have only a few raters. Neither of the high-rated treatments (Roaccutane andÂ Dr. Hauschka Skin Care) was part of Stone-Age life. Because of the absence of acne in at least a few groups of people living more Stone-Age-like (stoneagesque?) lives, it is likely that something about modern life causes acne. When whatever that is is figured out, it should be possible to eliminate acne cheaply and safely.
Regardless of the future, this table is a big step forward in dealing with the problem. It is the first unbiassed look at the effectiveness of different treatments I have seen and it tests a lot of everyday treatments (e.g., face-washing). Academic papers on the subject usually study prescription drugs and the authors usually favor one of the treatments being studied.