Efficacy of Benzoyl Peroxide (5.3%) Emollient Foam and Benzoyl Peroxide (8%) Wash in Reducing Propionibacterium acnes on the Back

June 2010 | Volume 9 | Issue 6 | Original Article | 622 | Copyright © June 2010

James J. Leyden MD

Department of Dermatology, University of Pennsylvania, Philadelphia, PA

the brief exposure in a “wash off “ product in an area with less density of sebaceous follicles and lipid than found on the face may not be sufficient for solubilization of BP particles in suspension in the wash formulation. Further studies with varying periods of time between application and rinsing would help clarify whether this hypothesis has merit. Likewise, it would be of interest to see how effective a “leave on” formulation is when used at home without supervision.


BP (5.3%) emollient foam effectively reduced P. acnes populations on the back and may offer a useful therapy for patients with acne on broad body surface areas. BP (8%) wash applied at home in the shower did not effectively reduce P. acnes populations on the back. Both treatments were well tolerated


The author thanks Brian Bulley MSc for editorial assistance.


The authors have no relevant conflicts of interest to disclose.
The manufacturer of the foam product sponsored this study.


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Address for Correspondence

James J. Leyden, MD505 ParkwayBroomall, PA 19008jjleyden@mindspring.com