A regimen for the therapeutic treatment of rosacea, which includes topically applying to the skin of a subject a pharmaceutical composition. The pharmaceutical composition includes about 1% w/w to about 10% w/w benzoyl peroxide as an active ingredient, and a pharmaceutically acceptable carrier or excipient, wherein the benzoyl peroxide is the only active ingredient in the pharmaceutical composition. The pharmaceutical composition is applied once daily for a period of about 2 weeks, about 4 weeks, about 8 weeks and about 12 weeks. The treatment regimen achieves a success rate of at least about 6%, wherein the success rate is defined as a percentage increase in the number of subjects achieving clear or almost clear skin on the investor global assessment (IGA) scale after treatment with the pharmaceutical composition. The treatment regimen may also achieve significantly greater reduction in inflammatory lesion counts compared to treatment with vehicle alone.
