Oil in water microemulsion formulation
AssigneeMED BioDevelopment Inc.
InventorsRobert Luft, Kyle Eric Michelson
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Abstract
The present invention relates to a microemulsion formulation comprising oils, non-ionic surfactant, water, and the active ingredient, wherein this microemulsion is produced by mixing an aqueous phase and a lipid phase in which each phase contains at least one surfactant in a defined ratio, at least one amphiphilic co-surfactant, and at least one co-solvent whereby the resulting microemulsion has very small dispersed droplets, is preserved against microbial contamination, and, is thermodynamically stable for long periods of time and at elevated temperature.
Claims18
A cosmetic or pharmaceutical oil in water (o/w) microemulsion composition comprising,
- a. a lipid phase comprising an oily component and one or more non-ionic surfactant(s) and one or more co-surfactant(s),
- b. an aqueous phase comprising one or more non-ionic surfactant(s), and one or more co-surfactants;
- and
- c. at least one co-solvent,
- wherein the microemulsion has an average particle size of less than 100 nm.
Dependencies are inferred from the claim text.