Modular emulsion-based product differentiation
View Patent ↗A micro-scale heterogeneous emulsion is provided. In some examples, the micro-scale heterogeneous emulsion can include at least two internal phases and an external phase. A method of producing a micro-scale heterogeneous emulsion is also disclosed herein. A method of providing a stable, custom cosmetic composition is also disclosed herein.
1. A consumer product which is a cosmetic composition for treating keratinous tissue, comprising a micro-scale heterogeneous emulsion, the micro-scale heterogeneous emulsion comprising: at least a first internal phase and a second internal phase each dispersed as droplets in an aqueous external phase, wherein
the droplets of the first internal phase comprise at least one of silicone oils, hydrocarbon oils, ester oils, amide oils, ether oils, or combinations thereof;
the droplets of the second internal phase comprise a core at least of a non-aqueous polar solvent and a membrane at least of a silicone oil;
the droplets of the first internal phase and the droplets of the second internal phase are each stabilized within the external phase, are separate from each other, and the droplets do not substantially exhibit droplet coalescence;
the second internal phase differs at least in part from the first internal phase in chemical makeup; and
the droplets of the first internal phase have an overall size of 0.5 microns to 100 microns.
2. A product according to claim 1 wherein the internal phases are substantially free of destabilizing constituents.
3. A product according to claim 2 wherein the destabilizing constituents include at least benzyl alcohol, ethyl alcohol, phenoxyalcohol or combinations thereof.
4. A product according to claim 1 wherein the internal phases further comprise stabilizers.
5. A product according to claim 4 wherein the stabilizers include surfactants, functionally modified polymers or combinations thereof.
6. A product according to claim 5 wherein the stabilizers include silicone surfactants, non-ionic surfactants, ionic surfactants, cationic surfactants, anionic surfactants, ethers and esters of polyglycols and fatty acids, linear or branched silicone emulsifiers, silicone elastomers or combinations thereof.
7. A product according to claim 1 wherein the internal phases include one or more structuring agents.
8. A product according to claim 7 wherein the structuring agents include silicone elastomers, silicone gums, silicone waxes, linear silicones, natural waxes, synthetic waxes, natural or synthetic monmorillonite minerals, silicas, silicates, silica silylate, alkali metal or alkaline earth metal derivatives of any of the silicone gums, waxes, natural or synthetic waxes, minerals, silicas, silicates, silica silyate, polyamides, polysilicone-polyamide copolymers or any combination thereof.
9. A product according to claim 1 wherein the droplets of one of the first and second internal phases contain an active selected from the group consisting of a biologically active, a cosmetic ingredient, a fragrance, a color and a combination thereof.
10. A product according to claim 9 wherein the droplets of both of the first and second internal phases contain an active.
11. A product according to claim 10 wherein the active of the droplets of the first internal phase differ from the active of the droplets of the second internal phase.
12. A product according to claim 1 further comprising multiple internal phases dispersed as droplets in the aqueous external phase and the droplets of the internal phases except the first phase comprise cores and membranes of immiscible non-aqueous components.
13. A product according to claim 12 wherein the first internal phase comprises substantially homogeneous droplets of non-aqueous components.