Low emulsifier multiple emulsions
First Claim
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1. A stable multiple emulsion comprising a primary emulsion in an external phase, and comprising a principal water phase and a principal oil phase, the multiple emulsion containing no more than about 1% of an emulsifier having an HLB of about 16 to about 20, wherein the principal water phase is thickened an AMPS/VIFA copolymer.
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Abstract
The invention relates to multiple emulsions comprising a primary emulsion in an external phase, and comprising a principle water phase and a principle oil phase, the multiple emulsion containing no more than about 1% of an emulsifier having an HLB of about 16 to about 20.
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17 Claims
- 1. A stable multiple emulsion comprising a primary emulsion in an external phase, and comprising a principal water phase and a principal oil phase, the multiple emulsion containing no more than about 1% of an emulsifier having an HLB of about 16 to about 20, wherein the principal water phase is thickened an AMPS/VIFA copolymer.
- 6. A stable multiple emulsion comprising a primary emulsion in an external phase, and comprising a principal water phase and a principal oil phase, the multiple emulsion containing no more than about 1% of an emulsifier having an HLB of about 16 to about 20, in which the viscosity of the primary emulsion and the viscosity of the external phase are matched to within about 10%.
- 8. A stable multiple emulsion comprising a primary emulsion in an external phase, and comprising a principle water phase and a principle oil phase, the principle water phase being thickened with a water miscible thickener, and the principle oil phase being thickened with an oil-miscible polymer having polar moieties, the viscosity of the primary emulsion and the viscosity of the external phase being matched to within about 10%, and the multiple emulsion containing no more than about 1% of an emulsifier having an HLB of about 16 to about 20.
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16. A stable multiple emulsion capable of conferring color to skin comprising a primary emulsion in an external phase, and comprising a principal water phase and a principal oil phase, the multiple emulsion containing no more than about 1% of an emulsifier having an HLB of about 16 to about 20, which multiple emulsion comprises pigment, wherein the pigment is not incorporated into the external phase, and the color resulting from the pigment is developed only after rubbing on the skin.
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17. A stable multiple emulsion comprising a primary emulsion in an external phase, and comprising a principal water phase and a principal oil phase, the multiple emulsion containing no more than about 1% of an emulsifier having an HLB of about 16 to about 20, wherein the emulsion is a quadruple emulsion.
Specification