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Oleaginous pharmaceutical and cosmetic foam

  • US 8,518,378 B2
  • Filed: 09/14/2010
  • Issued: 08/27/2013
  • Est. Priority Date: 08/04/2003
  • Status: Active Grant
First Claim
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1. An oleaginous foamable therapeutic composition, comprising:

  • a. about 70% to about 96.5% of a solvent phase, wherein the solvent phase is selected from the group consisting of a hydrophobic solvent, a silicone oil, and mixtures thereof;

    b. at least one non-ionic surface-active agent at a concentration of about 0.1% to about 10% by weight of the total composition;

    c. at least one gelling agent at a concentration of about 0.1% to about 5% by weight of the total composition;

    d. at least one active agent;

    e. at least one potent solvent selected from the group consisting of a hydrophobic solvent other than mineral oil;

    a co-solvent;

    an emollient; and

    mixtures thereof, wherein the potent solvent solubilizes the active agent substantially better than mineral oil solubilizes the active agent; and

    f. at least one liquefied or compressed gas propellant, wherein the composition forms a thermally stable breakable foam upon release from a pressurized container that collapses upon application of shear force; and

    wherein the water content of the composition is less than about 30% by weight.

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