Provided is a foam forming formulation and method of treating an infection in a body cavity. The foam forming formulation contains hydrogen peroxide monoglyceride crystals at least one acid and/or buffer which is present in an amount to provide a pH of 3 to 5 within a body cavity a blowing agent in an amount to blow the foam forming composition and form a foam and water. The foam forming composition is suitable application to body cavity when blown to form the foam and the form degrades at a body temperature to release the hydrogen peroxide to tissues in the body cavity at a pH of 3 to 5. Also provided is a foam forming composition vehicle for delivering an active agent.
