Pharmaceutical foam

A topical delivery foam composition in a pressurized container, said composition comprising:

• up to 15% of at least one pharmaceutically active agent, wherein the at least one pharmaceutically active agent comprises a combination of benzoyl peroxide and clindamycin or a salt or ester thereof;
• from about 83% to about 97.9% w/w of a quick-breaking foaming agent comprising water and a surfactant;
• and
• from about 2% to about 7% w/w of an aerosol propellant selected from the group consisting of a hydrocarbon, a chlorofluorocarbon, dimethyl ether, hydrofluorocarbons and a mixture thereof,
• wherein said composition is a quick-breaking foam after release from said container, and wherein said quick-breaking foaming agent comprises about 80% to about 95% w/w water and about 0% of a C1-C6 alcohol, based on the total weight of the composition.