NCT00877409.

Trial name or title	NCT00877409
Methods	Study design: parallel, single‐blind design Duration of follow‐up: 12 weeks
Participants	Inclusion criteria Male or female aged 12 to 35 years Acne vulgaris diagnosed as grade I (only comedones) or II (comedones, papules, and pustules) Exclusion criteria Pregnant or nursing Any other facial skin condition that might interfere with acne vulgaris diagnosis and/or assessment History of hypersensitivity or allergy to benzoyl peroxide or sulphur Any systemic or topical anti‐acne treatment within a specified period before study entry Site of acne: face
Interventions	Interventions in Group A Topical treatment: benzoyl peroxide/sulphur Regimen: leave‐on Concentration: benzoyl peroxide: 5%; sulphur: 2% Vehicle: unclear Dose: once daily Duration: 12 weeks Interventions in Group B Topical treatment: placebo Regimen: leave‐on Concentration: N/A Vehicle: unclear Dose: once daily Duration: 12 weeks
Outcomes	Primary outcomes of review interest None Secondary outcomes of review interest Investigator‐assessed change in lesion counts. Other outcomes reported in the study Evaluation of oily skin (assessed on a 4‐point scale: absent, mild, moderate, intense) Occurrence and intensity of erythema, scaling, itching, and burning (assessed on a 4‐point scale: absent, mild, moderate, severe)
Starting date	April 2009
Contact information	Sérgio Schalka, Medcin Instituto da Pele Ltda
Notes	‐