Patent ID: 9439857
Filing Date: 2016-09-13
CPC Classification: A61K,A61P,A61Q

Claim Text:
1. A foamable composition in an aerosol packaging assembly for treating skin comprising a prefoam emulsion composition and a liquefied or compressed gas propellant, the prefoam emulsion composition comprising: a) b) a carrier comprising: wherein the buffer system is at a pH less than the pH of the prefoam emulsion before addition of the buffer system and is selected to provide a prefoam composition that is fluid at room temperature and that has a viscosity of less than about 8000 centipoises; wherein the liquefied or compressed gas propellant is at a concentration of about 3% to about 25% by weight of the foamable composition, wherein the pH sensitive polymeric additive is reversibly susceptible to buffer or pH adjuster, and the polymer together with the buffer system contributes to holding the active agent homogeneously dispersed in the foamable composition over a prolonged time, wherein the foamable composition is fluid at room temperature; and wherein the composition forms a breakable foam upon dispensing in which the active agent is homogenously dispersed.