Personal care composition containing spherical silicone elastomer microparticles

Abstract

The present disclosure is directed to a personal care composition comprising a crosslinked silicone elastomer, a surfactant-free crosslinked silicone elastomer powder, and a polyether-free personal care composition. The present disclosure is further directed to a personal care composition comprising one or more of an oil, an aqueous phase, a sunscreen, a film-forming agent, a wax, an emulsifier, a particulate material, a pigment, a dye, and a preservative.

Description

[Technical Field]

[0001] The present disclosure relates to a personal care composition containing a crosslinked silicone elastomer. The present disclosure also relates to a personal care composition containing a surfactant-free crosslinked silicone elastomer powder. The present disclosure further relates to a personal care composition that does not contain a polyether compound. [Background technology]

[0002] Crosslinked silicone elastomers offer luxurious sensory benefits to personal care formulations. These benefits include, but are not limited to, a cushioned feel, a matte appearance, and a powder-soft afterfeel. Crosslinked silicone elastomers are often prepared by crosslinking siloxane monomers in the presence of a solvent and shearing the mixture using a high-shear mixer to form a smooth gel. See, for example, U.S. Pat. Nos. 4,987,169, 5,654,362, 5,760,116, 6,423,322, and 5,811,487. These crosslinked elastomers often contain catalysts such as platinum or tin because the reaction occurs in the presence of such catalysts. The morphology and shape of the sheared particles are nonuniform and difficult to control. Japanese Patent No. 4,860,214 describes a method for preparing crosslinked silicone elastomers with uniform spherical morphology without the use of platinum or tin catalysts. However, these silicone elastomers described in Japanese Patent No. 4860214 are accompanied by surfactants used in their synthesis. In one embodiment, these surfactants are polyether surfactants, which can be incorporated into personal care formulations together with elastomers to stabilize the formulations. However, polyether compounds and surfactants often cause skin irritation. Therefore, there is a need for personal care formulations containing crosslinked silicone elastomers that are prepared without the use of platinum or tin catalysts and that do not contain polyether compounds. Summary of the Invention

[0003] The present disclosure provides a personal care composition comprising a crosslinked silicone elastomer, the crosslinked silicone elastomer comprising: (1) Crosslinkable siloxane (a) an α,ω-dihydroxypoly(diorganosiloxane) having a viscosity (at 25°C) of about 5 to about 3000 mPa·s; and (b) General formula R 1 Si(OR2 )3 organotrialkoxysilanes; by reacting R 1 is a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, or a substituted or unsubstituted aryl group, and wherein the substituted alkyl group is a halogen-substituted alkyl group having 1 to 4 carbon atoms; R 2 is methyl, ethyl, or 2-methoxyethyl; (2) emulsifying the crosslinkable siloxane in the presence of a surfactant; (3) crosslinking the emulsified siloxane; wherein the personal care composition is free of polyether compounds.

[0004] The present disclosure also provides a personal care composition comprising a crosslinked silicone elastomer, the crosslinked silicone elastomer comprising: (1) Crosslinkable siloxane (a) an α,ω-dihydroxypoly(diorganosiloxane) having a viscosity (at 25°C) of about 5 to about 3000 mPa·s; and (b) General formula R 1 Si(OR 2 )3 organotrialkoxysilanes; by reacting R 1 is a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, or a substituted or unsubstituted aryl group, and wherein the substituted alkyl group is a halogen-substituted alkyl group having 1 to 4 carbon atoms; R 2 is methyl, ethyl, or 2-methoxyethyl; wherein the alkoxy groups of component (b) are from about 1.5 to about 5 per silanol group of component (a); (2) emulsifying the crosslinkable siloxane in the presence of a surfactant; (3) crosslinking the emulsified siloxane; wherein the personal care composition is free of polyether compounds.

[0005] The present disclosure further provides a personal care composition comprising a crosslinked silicone elastomer powder, the crosslinked silicone elastomer powder being spherical in shape; (1) Crosslinkable siloxane (a) an α,ω-dihydroxypoly(diorganosiloxane) having a viscosity (at 25°C) of about 5 to about 3000 mPa·s; and (b) General formula R 1 Si(OR 2 )3 organotrialkoxysilanes; by reacting R 1 is a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, or a substituted or unsubstituted aryl group, and wherein the substituted alkyl group is a halogen-substituted alkyl group having 1 to 4 carbon atoms; R 2 is methyl, ethyl, or 2-methoxyethyl; (2) emulsifying the crosslinkable siloxane in the presence of a surfactant; (3) crosslinking the emulsified siloxane to form a crosslinked silicone elastomer emulsion; and (4) drying the crosslinked silicone elastomer emulsion to separate the solid crosslinked silicone elastomer powder; wherein the personal care composition is free of polyether compounds.

[0006] The present disclosure further provides a surfactant-free crosslinked silicone elastomer powder. [Brief explanation of the drawings]

[0007] The accompanying drawings incorporated in this application form a part of the specification and illustrate embodiments of the present disclosure. Together with the detailed description, the drawings further serve to explain the principles of the disclosed embodiments and to enable one skilled in the relevant art to make and use the disclosed embodiments. The drawings are intended to be illustrative, not limiting.

[0008] FIG. 1 illustrates the sensory panel evaluation test for Formulation Examples 2A and 2B.

[0009] FIG. 2 illustrates the sensory panel evaluation test for formulation examples 6A, 6B, and 6C. DETAILED DESCRIPTION OF THE INVENTION

[0010] As used above, and throughout the detailed invention, the following terms, unless otherwise indicated, shall be understood to have the following meanings:

[0011] Unless otherwise indicated, the terms "a," "an," "the," and similar terms, when used in the context of describing particular embodiments of this application (particularly in the context of the claims), may be construed to include both the singular and the plural. The recitation of ranges of values herein is merely intended to serve as a shorthand method of separately referring to each individual value falling within the range. Unless otherwise indicated herein, each individual value is incorporated herein as if it were individually set forth herein.

[0012] Furthermore, "and / or," as used herein, should be understood as a specific disclosure of each of the two specified features or components with or without the other. Thus, the term "and / or," when used herein in phrases such as "A and / or B," is intended to include "A and B," "A or B," "A" (alone), and "B" (alone). Similarly, the term "and / or," when used in phrases such as "A, B, and / or C," is intended to include each of the following embodiments: A, B, and C; A, B, or C; A or C; A or B; B or C; A and C; A and B; B and C; A (alone); B (alone); and C (alone).

[0013] Where any embodiment is described herein using the term "comprising," it will be understood that otherwise similar embodiments described using the terms "consisting of" and / or "consisting essentially of" are also provided.

[0014] The term "about" encompasses the range of experimental error that occurs in any measurement.

[0015] The term "hydrocarbon" as used herein refers to any chemical structure containing hydrogen and carbon atoms.

[0016] The term "alkyl" refers to any monovalent, saturated, straight- or branched-chain hydrocarbon group; and the term "alkenyl" refers to any monovalent, straight- or branched-chain hydrocarbon group containing one or more carbon-carbon double bonds, where the point of attachment of the group can be through the carbon-carbon double bond or anywhere else.

[0017] Representative examples of alkyl include, but are not limited to, methyl, ethyl, propyl, and isobutyl. Examples of alkenyl include, but are not limited to, vinyl, propenyl, allyl, methallyl, ethylidenylnorbornane, ethylidenenorbornyl, ethylidenylnorbornene, and ethylidenenorbornenyl.

[0018] The term "aryl" includes any aromatic hydrocarbon having one hydrogen atom removed. Specific non-limiting examples of aryl groups include phenyl and naphthyl.

[0019] The terms "halo" or "halogen," by themselves or as part of another group, refer to -Cl, -F, -Br, or -I.

[0020] The term "polyether compounds" includes silicone / organic molecules having ether groups, primarily polyethylene glycol (PEG) ether groups and polypropylene glycol (PPG) ether groups. Examples of polyether compounds include, but are not limited to, polyethylene oxide, polypropylene oxide, polybutylene oxide, polyoxyethylene / polyoxypropylene glycol, polyoxyethylene alkyl ethers, polyoxyethylene alkenyl ethers, polyoxyethylene alkylphenyl ethers, and polyoxyethylene / polyoxypropylene alkyl ethers.

[0021] The term "surfactant" includes anionic surfactants, cationic surfactants, nonionic surfactants, and amphoteric surfactants.

[0022] Anionic surfactants include, but are not limited to, hexylbenzenesulfonic acid, octylbenzenesulfonic acid, decylbenzenesulfonic acid, dodecylbenzenesulfonic acid, cetylbenzenesulfonic acid, myristylbenzenesulfonic acid, lauryl sulfate, polyoxyethylene lauryl sulfate, dodecylsulfonic acid, tetradecenesulfonic acid, hexadecylsulfonic acid, hydroxydodecanesulfonic acid, hydroxytetradecanesulfonic acid, hydroxyhexadecanesulfonic acid, and salts thereof.

[0023] Cationic surfactants include, but are not limited to, octyltrimethylammonium hydroxide, lauryltrimethylammonium hydroxide, stearyltrimethylammonium hydroxide, dioctyldimethylammonium hydroxide, distearyldimethylammonium hydroxide, lauryltrimethylammonium chloride, stearyltrimethylammonium chloride, cetyltrimethylammonium chloride, dicocoyldimethylammonium chloride, distearyldimethylammonium chloride, benzalkonium chloride, and stearyldimethylbenzylammonium chloride.

[0024] Nonionic surfactants include, but are not limited to, polyoxyethylene lauryl ether, polyoxyethylene fatty acid esters, polyoxyethylene sorbitan fatty acid esters, sorbitan fatty acid esters, glycerin fatty acid esters, polyoxyethylene hydrogenated castor oil, polyethylene glycol, polypropylene glycol, and diethylene glycol.

[0025] Zwitterionic (amphoteric) surfactants have both cationic and anionic centers attached to the same molecule. The cationic portion is based on a primary, secondary, tertiary amine, or quaternary ammonium cation. The anionic portion is more diverse and can include sulfonates, carboxylates, and phosphates. Examples of zwitterionic surfactants include, but are not limited to, CHAPS (3-[(3-cholamidopropyl)dimethylammonio]-1-propanesulfonate), cocamidopropyl hydroxysultaine, cocamidopropyl betaine, phosphatidylethanolamine, phosphatidylcholine, sphingomyelin, lauryldimethylamine oxide, and myristamine oxide.

[0026] Other than in the examples, or unless otherwise noted, all numbers expressing quantities of ingredients, reaction conditions, lengths of time, quantified properties of substances, and the like set forth in the specification and claims are understood to be modified in all instances by the term "about."

[0027] Any numerical range recited herein is understood to include all subranges within that range, and any combination of the various endpoints of such range or subrange.

[0028] Furthermore, all compounds, materials, or substances explicitly or implicitly disclosed and / or claimed herein as belonging to a group of structurally, compositionally, and / or functionally related compounds, materials, or substances are understood to include the individual members of that group and all combinations thereof.

[0029] The personal care compositions disclosed herein comprise a crosslinked silicone elastomer, the crosslinked silicone elastomer comprising: (1) Crosslinkable siloxane (a) an α,ω-dihydroxypoly(diorganosiloxane) having a viscosity (at 25°C) of about 5 to about 3000 mPa·s; and (b) General formula R 1 Si(OR 2 )3 organotrialkoxysilanes; by reacting R 1 is a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, or a substituted or unsubstituted aryl group, and wherein the substituted alkyl group is a halogen-substituted alkyl group having 1 to 4 carbon atoms; R 2 is methyl, ethyl, or 2-methoxyethyl; (2) emulsifying the crosslinkable siloxane in the presence of a surfactant; (3) crosslinking the emulsified siloxane; prepared by, and The personal care compositions herein are free of polyether compounds.

[0030] The present disclosure also provides a personal care composition comprising a crosslinked silicone elastomer, the crosslinked silicone elastomer comprising: (1) Crosslinkable siloxane (a) an α,ω-dihydroxypoly(diorganosiloxane) having a viscosity (at 25°C) of about 5 to about 3000 mPa·s; and (b) General formula R 1 Si(OR 2 )3 organotrialkoxysilanes; by reacting R 1 is a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, or a substituted or unsubstituted aryl group, and wherein the substituted alkyl group is a halogen-substituted alkyl group having 1 to 4 carbon atoms; R2 is methyl, ethyl, or 2-methoxyethyl; wherein the alkoxy groups of component (b) are from about 1.5 to about 5 per silanol group of component (a); (2) emulsifying the crosslinkable siloxane in the presence of a surfactant; (3) crosslinking the emulsified siloxane; prepared by, and wherein the personal care composition does not contain a polyether compound.

[0031] The present disclosure further provides a personal care composition comprising a crosslinked silicone elastomer powder, the crosslinked silicone elastomer powder being spherical in shape, (1) Crosslinkable siloxane (a) an α,ω-dihydroxypoly(diorganosiloxane) having a viscosity (at 25°C) of about 5 to about 3000 mPa·s; and (b) General formula R 1 Si(OR 2 )3 organotrialkoxysilanes; by reacting R 1 is a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, or a substituted or unsubstituted aryl group, and wherein the substituted alkyl group is a halogen-substituted alkyl group having 1 to 4 carbon atoms; R 2 is methyl, ethyl, or 2-methoxyethyl; (2) emulsifying the crosslinkable siloxane in the presence of a surfactant; (3) crosslinking the emulsified siloxane to form a crosslinked silicone elastomer emulsion; and (4) drying the crosslinked silicone elastomer emulsion to separate the solid crosslinked silicone elastomer powder; wherein the personal care composition is free of polyether compounds.

[0032] In one embodiment, the crosslinked silicone elastomer powder is spherical.

[0033] In another embodiment, the crosslinked silicone elastomer powder does not contain a surfactant.

[0034] In some embodiments, the personal care compositions described above are free of polyether compounds. Condensation Reaction α,ω-dihydroxypoly(diorganosiloxane)

[0035] In some embodiments, the α,ω-dihydroxypoly(diorganosiloxane) described above has the general formula HO[(R 3 )2SiO] p Has H.

[0036] In some embodiments, each R 3 are independently a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, or a substituted or unsubstituted aryl group.

[0037] In some embodiments, each R 3 are independently substituted or unsubstituted alkyl groups having 1 to 30 carbon atoms. In some embodiments, each R 3 are independently substituted or unsubstituted alkyl groups having 1 to 10 carbon atoms. In some embodiments, the alkyl group is methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl, or decyl. In some embodiments, each R 3 is methyl.

[0038] In some embodiments, each R 3 is independently a substituted alkyl group that is a halogen-substituted alkyl group. In some embodiments, the halogen-substituted alkyl group is 3-chloropropyl or 3,3,3-trifluoropropyl.

[0039] In some embodiments, each R 3are independently substituted or unsubstituted alkenyl groups having 2 to 8 carbon atoms. In some embodiments, each R 3 are independently substituted or unsubstituted alkenyl groups having 2 to 4 carbon atoms. In some embodiments, the alkenyl group is a vinyl group or an allyl group.

[0040] In some embodiments, each R 3 are independently substituted or unsubstituted aryl groups. In some embodiments, R 3 is a substituted aryl group, a phenyl group substituted with an alkyl group having 1 to 4 carbon atoms.

[0041] In some embodiments, each R 3 When is methyl, the α,ω-dihydroxypoly(diorganosiloxane) is an α,ω-dihydroxypoly(dimethylsiloxane).

[0042] In some embodiments, p is a value that provides a viscosity (at 25° C.) of the α,ω-dihydroxypoly(diorganosiloxane) of from about 5 to about 3000 mPa·s.

[0043] In some embodiments, the α,ω-dihydroxypoly(diorganosiloxane) has a viscosity of from about 5 to about 3000 mPa·s, from about 5 to about 2900 mPa·s, from about 5 to about 2800 mPa·s, from about 5 to about 2700 mPa·s, from about 5 to about 2600 mPa·s, from about 5 to about 2500 mPa·s, from about 5 to about 2400 mPa·s, from about 5 to about 2300 mPa·s, about 5 to about 2200 mPa·s, about 5 to about 2100 mPa·s, about 10 to about 2000 mPa·s, about 10 to about 1900 mPa·s, about 10 to about 1800 mPa·s, about 10 to about 1700 mPa·s, about 10 to about 1600 mPa·s, about 10 to about 1500 mPa·s, about 10 to about 1400 mPa·s s, about 10 to about 1300 mPa·s, about 10 to about 1200 mPa·s, about 10 to about 1100 mPa·s, about 15 to about 1000 mPa·s, about 15 to about 900 mPa·s, about 15 to about 800 mPa·s, about 15 to about 700 mPa·s, about 15 to about 600 mPa·s, about 15 to about 500 mPa·s, about 15 to about 400 mPa·s, about 15 to about 300 mPa·s, about 15 to about 200 mPa·s, about 15 to about 100 mPa·s, about 20 to about 90 mPa·s, about 20 to about 80 mPa·s, about 20 to about 70 mPa·s, about 20 to about 60 mPa·s, about 20 to about 50 mPa·s, or about 20 to about 40 mPa·s at 25°C. Organotrialkoxysilane

[0044] In some embodiments, the organotrialkoxysilanes described above have the general formula R 1 Si(OR 2 )3.

[0045] In some embodiments, R 1 is a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, or a substituted or unsubstituted aryl group.

[0046] In some embodiments, R 1 is a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms. In some embodiments, R 1is a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms. In some embodiments, the alkyl group is methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl, or decyl. In some embodiments, R 1 is methyl.

[0047] In some embodiments, R 1 is a substituted alkyl group, which is a halogen-substituted alkyl group. In some embodiments, the halogen-substituted alkyl group is 3-chloropropyl or 3,3,3-trifluoropropyl.

[0048] In some embodiments, R 1 is a substituted or unsubstituted alkenyl group having 2 to 8 carbon atoms. In some embodiments, R 1 is a substituted or unsubstituted alkenyl group having 2 to 4 carbon atoms. In some embodiments, the alkenyl group is a vinyl group or an allyl group.

[0049] In some embodiments, R 1 is a substituted or unsubstituted aryl group. In some embodiments, R 1 is a substituted aryl group, which is a phenyl group substituted with an alkyl group having 1 to 4 carbon atoms. 1 is phenyl.

[0050] In some embodiments, each R 2 are independently substituted or unsubstituted alkyl groups.

[0051] In some embodiments, each R 2 is independently a substituted alkyl group, which is an alkoxy-substituted alkyl group. In some embodiments, the alkoxy-substituted alkyl group is 2-methoxyethyl, 2-ethoxyethyl, 2-propoxyethyl, or 2-butoxyethyl.

[0052] In some embodiments, each R 2 are independently substituted or unsubstituted alkyl groups, which are methyl, ethyl, propyl, butyl, pentyl, or hexyl. 2 is methyl. In some embodiments, each R 2 is ethyl. In some embodiments, each R 2 is propyl.

[0053] In some embodiments, the organotrialkoxysilane is methyltrimethoxysilane, methyltriethoxysilane, methyltri-n-propoxysilane, phenyltrimethoxysilane, or phenyltriethoxysilane.

[0054] In some embodiments, the alkoxy group (—OR 2 ) is the silanol group (-(R 3 )SiO-), about 1.5 to about 5 per silanol group of component (a), about 2 to about 4.5 per silanol group of component (a), about 2.5 to about 4 per silanol group of component (a), or about 3 to about 3.5 per silanol group of component (a). Catalysts used in condensation reactions

[0055] The present disclosure further provides that the condensation reaction between component (a) and component (b) is carried out using a catalyst. Examples of catalysts for the condensation reaction include amines, ammonium salts, ammonium hydroxide, phosphonium hydroxide, and combinations thereof.

[0056] Examples of amines as catalysts for the condensation reaction include, but are not limited to, monomethylamine, dimethylamine, monoethylamine, diethylamine, ethylenediamine, hexamethylenetetramine, and silanolate compounds thereof, such as α-aminopropyltriethoxysilane.

[0057] Examples of ammonium salts as catalysts for the condensation reaction include, but are not limited to, silanolate compounds thereof, such as (1-butyl)triethylammonium bromide, (1-decyl)trimethylammonium bromide, (1-dodecyl)trimethylammonium bromide, (1-dodecyl)trimethylammonium chloride, benzalkonium chloride, and trimethyl[3-(triethoxysilyl)propyl]ammonium chloride.

[0058] Examples of ammonium hydroxide as a catalyst for the condensation reaction include, but are not limited to, silanolate compounds thereof such as tetramethylammonium hydroxide, dimethylbenzylammonium hydroxide, and trimethyl[3-(triethoxysilyl)propyl]ammonium hydroxide.

[0059] Examples of phosphonium hydroxides as catalysts for the condensation reaction include, but are not limited to, silanolate compounds thereof such as tetramethylphosphonium hydroxide, tetra-n-butylphosphonium hydroxide, phenyltrimethylphosphonium hydroxide, tetramethylphosphonium methoxide, tetrabutylphosphonium butoxide, butyltricyclohexylphosphonium hydroxide, and trimethyl[3-(triethoxysilyl)propyl]phosphonium hydroxide.

[0060] In some embodiments, the catalyst for the condensation reaction is ammonium hydroxide or a silanolate compound thereof. In some embodiments, the catalyst for the condensation reaction is tetramethylammonium hydroxide. In some embodiments, the catalyst for the condensation reaction is phosphonium hydroxide or a silanolate compound thereof.

[0061] In some embodiments, the amount of catalyst for the condensation reaction is about 0.001 to about 0.1 parts by weight, about 0.002 to about 0.09 parts by weight, about 0.003 to about 0.08 parts by weight, about 0.004 to about 0.07 parts by weight, about 0.005 to about 0.06 parts by weight, about 0.006 to about 0.05 parts by weight, about 0.007 to about 0.04 parts by weight, about 0.008 to about 0.03 parts by weight, about 0.009 to about 0.02 parts by weight, or about 0.01 to about 0.02 parts by weight, per about 100 parts by weight of the combined amount of component (a) and component (b). Crosslinkable Siloxane

[0062] In some embodiments, the crosslinkable siloxane has a viscosity (25° C.) of about 5 to about 10,000 mPa·s, about 6 to about 9,000 mPa·s, about 7 to about 8,000 mPa·s, about 8 to about 7,000 mPa·s, about 9 to about 6,000 mPa·s, or about 10 to about 5,000 mPa·s.

[0063] In addition, fillers may be added as optional components to the crosslinkable polyorganosiloxane to control its flowability and improve the mechanical strength of the resulting crosslinked silicone elastomer microparticles. Such fillers include, but are not limited to, reinforcing fillers such as precipitated silica, fumed silica, pyrogenic silica, fumed titanium dioxide, ground quartz, and diatomaceous earth, non-reinforcing fillers such as aluminosilicates, iron oxide, zinc oxide, and calcium carbonate, and fillers obtained by treating the surface of these fillers with organosilicon compounds such as hexamethylsilazane, trimethylchlorosilane, polydimethylsiloxane, and polymethylhydrogensiloxane. Emulsification Process

[0064] In some embodiments, one or more surfactants are added to the reaction product of components (a) and (b) to form an emulsion, hi some embodiments, the one or more surfactants are selected from the group consisting of anionic surfactants, cationic surfactants, nonionic surfactants, zwitterionic surfactants, and combinations thereof.

[0065] Examples of anionic surfactants include, but are not limited to, hexylbenzenesulfonic acid, octylbenzenesulfonic acid, tetradecenesulfonic acid, hexadecylsulfonic acid, hydroxydodecanesulfonic acid, hydroxytetradecanesulfonic acid, lauryl sulfate, polyoxyethylene lauryl ether sulfate, and salts thereof.

[0066] Examples of cationic surfactants include, but are not limited to, octyltrimethylammonium hydroxide, lauryltrimethylammonium hydroxide, stearyltrimethylammonium hydroxide, lauryltrimethylammonium chloride, stearyltrimethylammonium chloride, cetyltrimethylammonium chloride, benzalkonium chloride, and stearyldimethylbenzylammonium chloride.

[0067] Examples of nonionic surfactants include, but are not limited to, polyoxyethylene lauryl ether, polyoxyethylene fatty acid esters, polyoxyethylene sorbitan fatty acid esters, sorbitan fatty acid esters, polyoxyethylene hydrogenated castor oil, polyethylene glycol, polypropylene glycol, and diethylene glycol.

[0068] Examples of zwitterionic (amphoteric) surfactants include, but are not limited to, CHAPS (3-[(3-cholamidopropyl)dimethylammonio]-1-propanesulfonate), cocamidopropyl hydroxysultaine, cocamidopropyl betaine, phosphatidylcholine, lauryl dimethylamine oxide, and myristamine oxide.

[0069] In some embodiments, the surfactant is sodium lauryl sulfate.

[0070] In some embodiments, the surfactant is sodium polyoxyethylene lauryl ether sulfate.

[0071] In some embodiments, the total amount of surfactant used is about 0.05 to about 50 parts by weight, about 0.06 to about 40 parts by weight, about 0.07 to about 30 parts by weight, about 0.08 to about 20 parts by weight, about 0.09 to about 10 parts by weight, about 0.1 to about 10 parts by weight, about 0.2 to about 9 parts by weight, about 0.3 to about 8 parts by weight, about 0.4 to about 7 parts by weight, about 0.5 to about 6 parts by weight, about 0.6 to about 5 parts by weight, about 0.7 to about 4 parts by weight, about 0.8 to about 3 parts by weight, about 0.9 to about 2 parts by weight, or about 1 to about 1.5 parts by weight, based on about 100 parts by weight of the crosslinkable polyorganosiloxane. Crosslinking reaction

[0072] In some embodiments, one or more acids are added to the emulsion as catalysts to crosslink the reaction product of components (a) and (b) to form a crosslinked silicone elastomer.

[0073] In some embodiments, the one or more acids include an inorganic acid, an organic acid, or a combination thereof.

[0074] Examples of inorganic acids include, but are not limited to, hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid, and sulfamic acid. Examples of organic acids include, but are not limited to, formic acid, citric acid, acetic acid, and p-toluenesulfonic acid.

[0075] In some embodiments, the amount of these acids used is about 0.05 to about 10 parts by weight, about 0.1 to about 10 parts by weight, about 0.5 to about 9.5 parts by weight, about 1 to about 9.5 parts by weight, about 1.5 to about 9 parts by weight, about 2 to about 9 parts by weight, about 2.5 to about 8.5 parts by weight, about 3 to about 8.5 parts by weight, about 3.5 to about 8 parts by weight, about 4 to about 8 parts by weight, about 4.5 to about 7.5 parts by weight, or about 5 to about 7 parts by weight, based on about 100 parts by weight of the crosslinkable polyorganosiloxane. Drying of crosslinked silicone elastomers

[0076] In some embodiments, one or more salts are added to separate the crosslinked silicone elastomer from the emulsion. In some embodiments, isopropanol is added to separate the crosslinked silicone elastomer from the emulsion. In some embodiments, the salt is calcium chloride. In some embodiments, the amount of salt used is about 0.01 to about 1 part by weight, about 0.05 to about 0.9 parts by weight, about 0.1 to about 0.8 parts by weight, about 0.2 to about 0.7 parts by weight, about 0.3 to about 0.6 parts by weight, or about 0.4 to about 0.5 parts by weight, per about 100 parts by weight of the emulsion. In some embodiments, the amount of isopropanol used is about 5 to about 20 parts by weight, about 6 to about 20 parts by weight, about 7 to about 19 parts by weight, about 8 to about 19 parts by weight, about 9 to about 18 parts by weight, about 10 to about 18 parts by weight, about 11 to about 17 parts by weight, about 12 to about 17 parts by weight, about 13 to about 16 parts by weight, or about 14 to about 16 parts by weight, based on about 100 parts by weight of the emulsion. In some embodiments, the crosslinked silicone elastomer is filtered and dried to form a crosslinked silicone elastomer powder. In some embodiments, the crosslinked silicone elastomer powder does not contain a surfactant. Component materials in personal care compositions

[0077] In one embodiment, the personal care composition comprises a crosslinked silicone elastomer. In another embodiment, the personal care composition comprises a crosslinked silicone elastomer powder.

[0078] In some embodiments, the personal care composition further comprises one or more volatile and non-volatile oils selected from the group consisting of hydrocarbons, silicones, fluorinated oils, and combinations thereof.

[0079] In some embodiments, the oil is selected from the group consisting of dimethicone, caprylyl methicone, phenyl-modified silicone, alkanes of 7 to 17 carbon atoms, fatty acid esters, and combinations thereof. In some embodiments, the alkane is straight-chain or branched-chain nonane, straight-chain or branched-chain decane, straight-chain or branched-chain undecane, straight-chain or branched-chain dodecane, straight-chain or branched-chain tridecane, straight-chain or branched-chain isododecane, straight-chain or branched-chain squalene, straight-chain or branched-chain hemisqualane, or combinations thereof.

[0080] In some embodiments, the personal care composition further comprises an aqueous phase, hi some embodiments, the aqueous phase comprises one or more of water, glycerin, butylene glycol, propanediol, xanthan gum, steareth-21, sodium polyacrylate, disodium EDTA, and sodium chloride.

[0081] In some embodiments, the personal care composition further comprises one or more organic or inorganic sunscreens, hi some embodiments, the sunscreens are selected from the group consisting of titanium dioxide, zinc oxide, oxybenzone, ethylhexyl salicylate, homosalate, avobenzone, octocrylene, and combinations thereof.

[0082] In some embodiments, the personal care composition further comprises one or more film-forming agents. In some embodiments, the one or more film-forming agents are silicone resins selected from the group consisting of MQ resins, MT resins, T-propyl resins, and combinations thereof. In some embodiments, the one or more film-forming agents are selected from the group consisting of acrylates / polytrimethylsiloxy-methacrylate copolymers, acrylates / dimethicone copolymers, vinylpyrrolidone / eicosene copolymers, styrene / acrylates copolymers, and combinations thereof.

[0083] In some embodiments, the personal care composition further comprises one or more waxes. 30-45 Alkyl dimethicone, C 30-45 Selected from the group consisting of alkyl cetearyl dimethicone crosspolymer, beeswax, ozokerite wax, carnauba wax, shea butter, stearic acid, cetyl alcohol, and combinations thereof.

[0084] In some embodiments, the personal care composition further comprises one or more emulsifiers, hi some embodiments, the one or more emulsifiers are polyglyceryl-4 (diisostearate / polyhydroxystearate / sebacate).

[0085] In some embodiments, the personal care composition further comprises one or more of particulate matter, pigment, and dye. In some embodiments, the particulate matter is selected from the group consisting of silica, talc, starch octenyl succinate Al, polymethylsilsesquioxane, nylon-12, starch particles such as tapioca starch and rice starch, cellulose particles, cellulose acetate particles, titanium dioxide, boron nitride, mica, organo-modified hectorite clay, and combinations thereof. In some embodiments, the pigment is iron oxide or lake pigment. In some embodiments, the dye is phloxine B.

[0086] In some embodiments, the personal care composition further comprises one or more preservatives. In some embodiments, the preservative is phenoxyethanol.

[0087] In some embodiments, the personal care composition is a deodorant, an antiperspirant, a skin cream, a facial cream, a hair shampoo, a hair conditioner, a mousse, a hair styling gel, a hair spray, a protective cream, a lipstick, a lip color, a facial foundation, a blush, makeup, a mascara, a skin care lotion, a moisturizer, a facial treatment, an eye serum, an eye cream, a personal cleanser, a facial wash, a bath oil, a perfume, a shaving cream, a pre-shave lotion, an after-shave lotion, a cologne, a sachet, a loose face powder, a compact powder, an eye shadow, and a sunscreen. Example 1 Preparation of emulsion 1

[0088] Preparation of reactive oil: 427 parts of α,ω-dihydroxypoly(dimethylsiloxane) with a viscosity of 85 mPa·s and 42 parts of methyltriethoxysilane were charged into a 500 mL flask equipped with a reflux stirrer. The reactants were mixed by stirring. The temperature was raised to 100°C. While stirring, 0.015 parts of a 30% aqueous solution of tetramethylammonium hydroxide was added as a catalyst. The reaction was continued for 5 hours, at which point the ethanol produced by the condensation reaction reached reflux and the temperature in the flask reached 94°C. The temperature was then raised to 140°C, and the reaction was continued for 2 hours to remove the ethanol produced and decompose the tetramethylammonium hydroxide catalyst. Low-boiling compounds were then removed by heating to 140°C under a reduced pressure of 2.6 kPa. After 3 hours, the reaction was cooled to room temperature, yielding 445 parts of a reactive oil with a viscosity of 470 mPa·s.

[0089] Preparation of silicone elastomer particle emulsion: 4.2 parts of sodium lauryl sulfate were dissolved in 90 parts of deionized water. Next, 300 parts of reactive oil were added and stirred for 5 minutes. Then, with continued stirring, 150 parts of deionized water were added dropwise over 5 minutes. This mixture was then uniformly emulsified using a colloid mill. Next, the resulting emulsion was transferred to a flask, and 6 parts of 20% sulfuric acid were added with stirring. The reaction was continued at 50°C for 17 hours with stirring. After cooling to 30°C with stirring, the reaction was terminated by adding triethanolamine dropwise until the pH reached 7. An aqueous dispersion of silicone elastomer microparticles (hereinafter referred to as "Emulsion 1") was obtained. The volume average particle size of the crosslinked silicone elastomer in Emulsion 1 was 5.7 μm. Example 2 Preparation of emulsion 2

[0090] Preparation of reactive oil: 314 parts of α,ω-dihydroxypoly(dimethylsiloxane) with a viscosity of 30 mPa·s and 146 parts of methyltriethoxysilane were charged into a 500 mL flask equipped with a reflux stirrer. The reactants were mixed by stirring. The temperature was raised to 100°C. While stirring, 0.015 parts of a 30% aqueous solution of tetramethylammonium hydroxide was added as a catalyst. The reaction was continued for 4 hours, at which point the ethanol produced by the condensation reaction reached reflux and the temperature in the flask reached 87°C. The temperature was then raised to 140°C, and the reaction was continued for 2 hours to remove the ethanol produced and decompose the tetramethylammonium hydroxide catalyst. Low-boiling compounds were then removed by heating to 140°C under a reduced pressure of 2.6 kPa. After 3 hours, the reaction was cooled to room temperature, yielding 348 parts of a reactive oil with a viscosity of 104 mPa·s.

[0091] Preparation of silicone elastomer particle emulsion: 1.2 parts of sodium polyoxyethylene lauryl ether sulfate were dissolved in 90 parts of ion-exchanged water. Next, 300 parts of reactive oil were added and stirred for 5 minutes. Then, with continued stirring, 150 parts of ion-exchanged water was added dropwise over 5 minutes. This mixture was then uniformly emulsified using a colloid mill. Next, the resulting emulsion was transferred to a flask, and 6 parts of 20% sulfuric acid were added with stirring. The reaction was continued with stirring at 50°C for 20 hours. Then, with stirring, a solution obtained by mixing 10% sodium carbonate solution and 30% sodium polyoxyethylene lauryl ether sulfate solution in a 1:1 weight ratio was added dropwise to the reaction mixture until the pH reached 7. An aqueous dispersion of silicone elastomer microparticles (hereinafter referred to as "Emulsion 2") was obtained. The volume average particle size of the crosslinked silicone elastomer in Emulsion 2 was 7.4 μm. Example 3 Preparation of dried cross-linked silicone elastomer powder 1

[0092] 100 g of emulsion 2 was placed in a four-neck flask equipped with an overhead stirrer, thermocouple, nitrogen line, and condenser. The emulsion was stirred at 200 rpm at room temperature. 2 g of a 10 wt. % CaCl2 solution and 15 g of isopropanol were then added to the flask. After stirring for 1 hour, the mixture was filtered, and the residue was washed with 100 g of deionized water at 50°C. This washing process was repeated three times to remove any remaining impurities. The silicone elastomer residue was then dried under vacuum at 100°C to yield a silicone elastomer in the form of a white powder. The percent solids for this powder were determined by placing a 1 g sample in a convection oven at 150°C. Residual surfactant was measured by UV / Vis spectroscopy. Table 1 lists the analytical results of the product. [Table 1] Example 4 Preparation of dried cross-linked silicone elastomer powder 2

[0093] 100 kg of emulsion 2 and 2 kg of 10 wt. % CaCl2 solution were charged to a kettle. The emulsion was stirred at room temperature for 30 minutes and then allowed to stand without stirring for 12 hours. The emulsion was then stirred again. After 30 minutes, the contents were filtered by centrifugation, and the residue was washed with 100 kg of water while centrifuging, leaving a dehydrated cake with a solids content of 76%. The dehydrated cake was dried in a rotary dryer at 110°C for 24 hours and then at 120°C for 12 hours. Table 1 lists the analytical results of the dried powder. Example 5 Preparation of dried cross-linked silicone elastomer powder 3

[0094] The emulsions of the present invention can be dried to powder by spray drying. 100 kg of emulsion 2 was dried by spray drying with nitrogen gas at 2.0 bar pressure through a 1.0 mm two-fluid nozzle. The gas inlet temperature was 225°C. The feed rate was 1.9 kg / hr on a dry powder basis. Table 1 lists the analytical results of the dried powder. Example 6 Preparation of dried cross-linked silicone elastomer powder 4

[0095] 360 kg of emulsion 2 and 7.2 kg of 10 wt. % CaCl2 solution were charged to a kettle. The emulsion was stirred at room temperature for 30 minutes and then allowed to stand without stirring for 12 hours. The emulsion was then stirred again. After 30 minutes, the contents were filtered by centrifugation, and the residue was washed with 900 kg of water while centrifuging, leaving a dehydrated cake with a solids content of 88%. The dehydrated cake was dried in a tray dryer at 105°C for 22 hours, with 1.5 kg of dehydrated cake on each tray. Table 1 lists the analytical results of the dried powder. Example 7 Preparation of Personal Care Formulation 1

[0096] Table 2 lists the ingredients of Personal Care Formulation 1 (water-in-oil skin primer). The procedure for preparing Personal Care Formulation 1 is described below. The ingredients of Phase A were combined in a disperser. The mixture was stirred at 70°C for 20 minutes until uniform. The ingredients of Phase B were combined in a disperser. The mixture was stirred at 70°C until uniform. Phase B was then added to Phase A. This mixture was stirred at 70°C until uniform. The ingredients of Phase C were combined in a disperser. The mixture was stirred at 70°C until uniform. Phase C was then slowly added to Phase A and Phase B while stirring at 300 rpm at 70°C. The mixture was emulsified by stirring at 300 rpm and 70°C for 20 minutes. The emulsion was then cooled to room temperature. Phase D was then added to the emulsion. The emulsion was stirred at 300 rpm for 10 minutes or at 2000 rpm for 3 minutes until uniform. [Table 2] Example 8 Preparation of Personal Care Formulation 2

[0097] Table 3 lists the ingredients of Personal Care Formulation 2 (water-in-silicone liquid foundation). The procedure for preparing Personal Care Formulation 2 is described below. The ingredients of Phase A were combined in a disperser. The mixture was stirred at 70°C until uniform. The ingredients of Phase B were combined in a disperser. The mixture was stirred at 70°C until uniform. Phase B was added to Phase A. The mixture was stirred at 70°C for 30 minutes until uniform. The ingredients of Phase C were combined in a disperser. The mixture was stirred at 70°C until uniform. Phase C was then slowly added to Phase A and Phase B while stirring at 300 rpm at 70°C. The mixture was emulsified by stirring at 300 rpm and 70°C for 20 minutes. The emulsion was then cooled to room temperature. Phase D was then added to the emulsion. The emulsion was stirred at 2000 rpm for 5 minutes until uniform.

[0098] Figure 1 shows the sensory panel evaluation test for Formulation Examples 2A and 2B, in which Formulation Example 2A exhibited better spreadability, skin adhesion, smoothness, and less stickiness compared to the benchmark Formulation Example 2B. [Table 3] Example 9 Preparation of Personal Care Formulation 3

[0099] Table 4 lists the ingredients for Personal Care Formula 3 (oil-in-water sunscreen, SPF 10). The procedure for preparing Personal Care Formula 3 is described below. The ingredients of Phase B were combined and mixed until uniform at 70°C. The ingredients of Phase C were combined and mixed until uniform at 70°C. Phase B was added to Phase C with stirring at 70°C. This mixture was stirred until uniform at 70°C. The ingredients of Phase A were combined and mixed until uniform at 50°C. The mixture of Phase B and Phase C was then added to Phase A with stirring at 50°C. This mixture was stirred at 50°C until uniform. The mixture was then cooled to 40°C. Phase D was then added to the mixture. The mixture was stirred at 11,000 rpm for 1 minute until uniform. [Table 4] Example 10 Preparation of Personal Care Formulation 4

[0100] Table 5 lists the ingredients of Personal Care Formulation 4 (Waterless Sunscreen). The procedure for preparing Personal Care Formulation 4 is described below: The ingredients of Phase A were mixed at room temperature. The ingredients of Phase B were added to Phase A at room temperature under homogenization at 6000 rpm for 5 minutes. [Table 5] Example 11 Preparation of Personal Care Formulation 5

[0101] Table 6 lists the ingredients of Personal Care Formulation 5 (lipstick). The procedure for preparing Personal Care Formulation 5 is described below. The ingredients of Phase A were combined and mixed at 70°C until the mixture was uniform. The ingredients of Phase B were combined and mixed at 70°C until the mixture was uniform. Phase B was added to Phase A with stirring. The mixture was stirred at 70°C until the mixture was uniform. The mixture was then cooled to room temperature. [Table 6] Example 12 Preparation of Personal Care Formulation 6

[0102] Table 7 lists the ingredients of Personal Care Formula 6 (Ultra Smooth Skin Clarifying Facial Serum). The procedure for preparing Personal Care Formula 6 is described below. The ingredients of Phase B were combined and mixed at 70°C until the mixture was uniform. The ingredients of Phase C were combined and mixed at 70°C until the mixture was uniform. Phase B was added to Phase C with stirring at 70°C. This mixture was stirred at 70°C until uniform. The ingredients of Phase A were combined and mixed at 50°C until the mixture was uniform. The mixture of Phase B and Phase C was then added to Phase A with stirring at 50°C. This mixture was stirred at 50°C until uniform. The mixture was then cooled to 40°C. Phase D was then added to the mixture. The mixture was stirred until uniform. The mixture was then cooled to room temperature.

[0103] Figure 2 shows the sensory panel evaluation test for Formulation Examples 6A, 6B, and 6C, in which Formulation Example 6A exhibited good spreadability, cushiony feel, and moisturized feel compared to the benchmark Formulation Examples 6B and 6C. [Table 7]

Claims

1. 1. A personal care composition comprising a crosslinked silicone elastomer, the crosslinked silicone elastomer comprising: (1) Crosslinkable siloxane (a) an α,ω-dihydroxypoly(diorganosiloxane) having a viscosity (25° C.) of about 5 to about 3000 mPa·s; and (b) General formula R １ Si(OR ２ ) ３ Organotrialkoxysilanes of the formula: wherein: R １ is a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, or a substituted or unsubstituted aryl group, and wherein the substituted alkyl group is a halogen-substituted alkyl group having 1 to 4 carbon atoms; R ２ is methyl, ethyl, or 2-methoxyethyl; (2) emulsifying the crosslinkable siloxane in the presence of a surfactant; and (3) crosslinking the emulsified siloxane; wherein the personal care composition is free of polyether compounds.

2. 10. The personal care composition of claim 1, further comprising one or more volatile and non-volatile oils selected from the group consisting of hydrocarbons, silicones, fluorinated oils, and combinations thereof. Personal care compositions.

3. 3. The personal care composition of claim 2, wherein the oil is selected from the group consisting of dimethicone, caprylyl methicone, phenyl-modified silicones, alkanes of 7 to 17 carbon atoms, fatty acid esters, and combinations thereof.

4. 4. The personal care composition of claim 3, wherein the alkane is straight-chain or branched-chain nonane, straight-chain or branched-chain decane, straight-chain or branched-chain undecane, straight-chain or branched-chain dodecane, straight-chain or branched-chain tridecane, straight-chain or branched-chain isododecane, straight-chain or branched-chain squalene, straight-chain or branched-chain hemisqualane, or a combination thereof.

5. 10. The personal care composition of claim 1, wherein the personal care composition further comprises an aqueous phase.

6. 6. The personal care composition of claim 5, wherein the aqueous phase comprises one or more of water, glycerin, butylene glycol, propanediol, xanthan gum, steareth-21, sodium polyacrylate, disodium EDTA, and sodium chloride.

7. 10. The personal care composition of claim 1, wherein the personal care composition further comprises one or more organic or inorganic sunscreens.

8. 8. The personal care composition of claim 7, wherein the sunscreen is selected from the group consisting of titanium dioxide, zinc oxide, oxybenzone, ethylhexyl salicylate, homosalate, avobenzone, octocrylene, and combinations thereof.

9. 10. The personal care composition of claim 1, wherein the personal care composition further comprises one or more film-forming agents.

10. 10. The personal care composition of claim 9, wherein the one or more film formers are silicone resins selected from the group consisting of MQ resins, MT resins, T-propyl resins, and combinations thereof.

11. 10. The personal care composition of claim 9, wherein the one or more film formers are selected from the group consisting of acrylates / polytrimethylsiloxy-methacrylate copolymer, acrylates / dimethicone copolymer, vinylpyrrolidone / eicosene copolymer, styrene / acrylates copolymer, and combinations thereof.

12. 10. The personal care composition of claim 1, wherein the personal care composition further comprises one or more waxes.

13. The wax is C ３０－４５ Alkyl dimethicone, C ３０－４５ 13. The personal care composition of claim 12, wherein the active ingredient is selected from the group consisting of alkyl cetearyl dimethicone crosspolymer, beeswax, ozokerite wax, carnauba wax, shea butter, stearic acid, cetyl alcohol, and combinations thereof.

14. 10. The personal care composition of claim 1, wherein the personal care composition further comprises one or more emulsifiers.

15. 10. The personal care composition of claim 1, wherein the personal care composition further comprises one or more of particulate matter, pigments, and dyes.

16. 16. The personal care composition of claim 15, wherein the particulate material is selected from the group consisting of silica, talc, starch Al octenyl succinate, polymethylsilsesquioxane, nylon-12, starch particles such as tapioca starch and rice starch, cellulose particles, cellulose acetate particles, titanium dioxide, boron nitride, mica, organo-modified hectorite clay, and combinations thereof.

17. 10. The personal care composition of claim 1, wherein the personal care composition further comprises one or more preservatives.

18. 10. The personal care composition of claim 1, wherein the personal care composition is a deodorant, antiperspirant, skin cream, facial cream, hair shampoo, hair conditioner, mousse, hair styling gel, hair spray, protective cream, lipstick, lip color, facial foundation, blush, makeup, mascara, skin care lotion, moisturizer, facial treatment, eye serum, eye cream, personal cleanser, face wash, bath oil, perfume, shaving cream, pre-shave lotion, after-shave lotion, cologne, sachet, loose face powder, compact powder, eye shadow, or sunscreen.

19. 1. A personal care composition comprising a crosslinked silicone elastomer powder, the crosslinked silicone elastomer powder being spherical in shape; (1) Crosslinkable siloxane (a) an α,ω-dihydroxypoly(diorganosiloxane) having a viscosity (25° C.) of about 5 to about 3000 mPa·s; and (b) General formula R １ Si(OR ２ ) ３ Organotrialkoxysilanes of the formula: wherein: R １ is a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, or a substituted or unsubstituted aryl group, and wherein the substituted alkyl group is a halogen-substituted alkyl group having 1 to 4 carbon atoms; R ２ is methyl, ethyl, or 2-methoxyethyl; (2) emulsifying the crosslinkable siloxane in the presence of a surfactant; (3) crosslinking the emulsified siloxane to form a crosslinked silicone elastomer emulsion; and (4) drying the crosslinked silicone elastomer emulsion to separate the solid crosslinked silicone elastomer powder; wherein the personal care composition is free of polyether compounds.

20. 20. The personal care composition of claim 19, wherein the crosslinked elastomer powder is free of surfactants.

21. A personal care composition comprising a crosslinked silicone elastomer, the crosslinked silicone elastomer comprising (1) Crosslinkable siloxane (a) an α,ω-dihydroxypoly(diorganosiloxane) having a viscosity (25° C.) of about 5 to about 3000 mPa·s; and (b) General formula R １ Si(OR ２ ) ３ Organotrialkoxysilanes of the formula: wherein: R １ is a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, or a substituted or unsubstituted aryl group, and wherein the substituted alkyl group is a halogen-substituted alkyl group having 1 to 4 carbon atoms; R ２ is methyl, ethyl, or 2-methoxyethyl; wherein the alkoxy groups of component (b) are from about 1.5 to about 5 per silanol group of component (a); (2) emulsifying the crosslinkable siloxane in the presence of a surfactant; and (3) crosslinking the emulsified siloxane; wherein the personal care composition is free of polyether compounds.

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