Try a 3 step regiment that is similar to the "systems" out there.
1. Medicated face wash with salicylic acid or benzoyl peroxide - use 1-3 times per week
2. Gentle face wash - use morning & night
3. 2-2.5% benzoyl peroxide cream - put on at night to kill p. acnes bacteria
4. (optional) Witch hazel toner (one part of the Proactiv system)