Without question, the single most effective product for acne that is available without a prescription is benzoyl peroxide. All work equally as well for the face–2.5%, 5%, or 10%. Stronger does not mean better, just more drying.
For the face, the gel works great. There are alcohol-based gels for oily skin, and water-based gels–for more dry skin.
These products will bleach hair, clothing, washcloths, towels, and sheets. Therefore, I recommend using them in the MORNING and at dinner time, but wash face before bedtime.
It takes a MINIMUM of 6 weeks to see ANY improvement, so be patient! by 12 weeks, most patients will see 50% improvement. DO NOT spot treat, but treat the entire face. This product works well for pustules and red bumps, but not as well for clogged pores, such as blackheads.