Silicone-in-water cosmetics

Abstract

The present invention relates to a water-in-silicone cosmetic product comprising water, a large amount of a polyol, a polyorganosiloxane dispersion containing polyorganosiloxane particles, water, and the polyol, and a hydrophilic polymer. The hydrophilic polymer is at least one of a polymer containing (meth)acryloylalkyltaurine or a salt thereof as a repeating unit and a polysaccharide. This water-in-silicone cosmetic product offers both nourishing and refreshing water effects. Furthermore, it does not cause a sticky or greasy coating.

Description

[0001] This application is a divisional application of the patent application with application number 201680091621.2, filed on December 23, 2016, and with the invention name “Water-containing silicone cosmetics”. Technical Field

[0002] The present invention relates to silicone-in-water cosmetics. Background Art

[0003] Cosmetic products containing polyols (such as glycerol) for skin care are popular with many consumers because they have nourishing and hydrating effects. Some of these products contain only oil and lack a refreshing effect on the skin, leaving a heavy, greasy, and slippery sensation. Other products containing glycerol have been developed in the form of water-like products that provide a great fresh, watery sensation to the skin, have a low nourishing effect, and provide a sticky sensation to the skin. For cosmetics with the combined advantages of these two types, emulsified cosmetics with an oil component combined with water have been proposed.

[0004] There is a need to propose cosmetic products comprising water and polyols such as glycerol, which simultaneously combine several sensory properties, namely a nourishing effect, a fresh, watery feel, a non-greasy and non-sticky feel on the skin.

[0005] There is also a need to increase the nourishing effect of cosmetics containing polyols, and one approach is to increase the polyol content. However, the present inventors have found that transparent silicone-in-water cosmetics containing a high percentage of glycerin unexpectedly lack nourishing effect, lack a refreshing watery feel, and leave a sticky and greasy feeling on the skin.

[0006] Furthermore, emulsified cosmetics are most often turbid white, whereas oil-based cosmetics and hydrogels appear transparent to the consumer. Therefore, there is a need for transparent cosmetics. Improved transparency in oil-in-water cosmetics has been proposed in WO 2013 / 111441, US 2015 / 0272861, and JP 2004-51574. These emulsions contain surfactants, fatty compounds (e.g., oils), and / or oil gelling agents (e.g., waxes), and therefore lack the satisfactory care and sensory properties described above.

[0007] In reality, to give oil-in-water emulsified cosmetics a transparent appearance, it's necessary to increase the content of oil components and polyols with similar refractive indices. However, if the oil content is too high, it won't be stably dispersed in the emulsion. Therefore, as in conventional emulsified cosmetics, considerable amounts of surfactants and gelling agents are required. However, these additives can cause skin irritation and a sticky feeling. On the other hand, if the polyol content is too high, an unpleasant, oily feeling will inevitably appear on the skin.

[0008] The cosmetic product of the present invention solves these problems and provides a silicone-in-water cosmetic product that simultaneously combines several sensory properties: a nourishing effect, a refreshing, watery feel, and a lack of greasy or sticky skin. Furthermore, this silicone-in-water cosmetic product is advantageously transparent or translucent and stable over time. This is the first cosmetic product to achieve this combination of multiple advantages. Summary of the Invention

[0009] According to one embodiment of the present invention, a transparent and stable water-in-silicone cosmetic is provided, comprising water, at least one polyol, a polyorganosiloxane dispersion, and a hydrophilic polymer, wherein the polyorganosiloxane dispersion comprises encapsulated polyorganosiloxane particles, wherein the hydrophilic polymer is preferably dissolved in a mixture of water and the polyol, and the polyorganosiloxane particles comprise a polyorganosiloxane core covered with a polymer shell, wherein the hydrophilic polymer is selected from the group consisting of a polysaccharide and a polymer comprising (meth)acryloylalkyltaurine or a salt thereof as a repeating unit.

[0010] The expression "silicone-in-water" as used in accordance with the present invention means a dispersion of solid silicone particles in water.

[0011] According to one embodiment of the present invention, a cosmetic is provided, comprising 20 wt% to 70 wt% of water, 15 wt% to 60 wt% of at least one polyol, and 5 wt% to 25 wt% of polyorganosiloxane particles, wherein the polyorganosiloxane particles comprise a polyorganosiloxane core covered with a polymer shell, and the polyorganosiloxane particles are dispersed in the water and the polyol; wherein the silicone-in-water cosmetic further comprises 0.001 wt% to 5 wt% of at least one hydrophilic polymer, wherein the hydrophilic polymer is selected from the group consisting of a polysaccharide and a polymer comprising (meth)acryloylalkyltaurine or a salt thereof as a repeating unit, and the percentages are calculated by weight relative to the weight of the cosmetic.

[0012] While the silicone-in-water cosmetic of the present invention imparts improved nourishing effects and a fresh, watery feel to the skin, it also has a controlled oily and sticky feel on the skin. The cosmetic is also advantageous in being translucent or transparent and is stable over time.

[0013] In the silicone-in-water cosmetic of the present invention, the content of the hydrophilic polymer is desirably 0.001 to 5.0% by mass based on the total mass. If the content is set within this range, the greasy and sticky feeling on the skin will be significantly controlled.

[0014] The viscosity of the silicone-in-water cosmetic of the present invention is desirably 250 mPa·s to 100,000 mPa·s at 25° C. If the viscosity is set within this range, the polyorganosiloxane can be more stably dispersed in an aqueous medium.

[0015] Beneficial effects of the present invention

[0016] According to the present invention, a stable and transparent silicone-in-water cosmetic can be provided, which imparts a nourishing effect and a refreshing watery feel to the skin and has a controlled oily and sticky feel on the skin. DETAILED DESCRIPTION

[0017] Preferred embodiments of the present invention will be described below; however, the present invention should not be limited to the following embodiments in any way.

[0018] The silicone-in-water cosmetic according to this embodiment includes (a) an aqueous medium containing water and a polyol.

[0019] As the water, steam distilled water from plants (including lavender water, rose water, and orange blossom water) can be used, and in addition to distilled water, purified water, hot spring water, or deep water can also be used.

[0020] Examples of the polyol include diols such as 1,3-propanediol, propylene glycol, butylene glycol, pentanediol, dipropylene glycol, and polyethylene glycol; glycerols such as glycerol, diglycerol, and polyglycerol; and sugar alcohols such as sorbitol. Among these, glycerol is preferred. One polyol may be used alone, or two or more polyols may be used in combination.

[0021] (a) The aqueous medium may further contain a monohydric alcohol (eg, phenoxyethanol) soluble in water or a polyhydric alcohol.

[0022] The content of (a) the aqueous medium is preferably 50% to 95% by mass, and more preferably 55% to 90% by mass, based on the total mass of the cosmetic. As used in this application, the term "based on total mass" refers to the total mass of the silicone-in-water cosmetic as a base.

[0023] In the cosmetic, the mass ratio of water relative to the polyhydric alcohol is preferably 0.30 to 8.0, more preferably 0.30 to 6.0, more preferably 0.60 to 3.0, and further preferably 1 to 1.5.

[0024] The silicone-in-water cosmetic according to this embodiment includes an aqueous medium substantially containing water and a polyol. Polyorganosiloxane particles are dispersed in the aqueous medium, advantageously forming a continuous phase.

[0025] The polyorganosiloxane particles, in particular their cores, may have siloxane bonds (Si-O-Si) and organic groups bonded to silicon atoms, such as alkyl groups or aryl groups. Examples of polyorganosiloxanes include polydimethylsiloxane (dimethicone) and polymethylphenylsiloxane. Polyorganosiloxanes may have functional groups, such as unsaturated groups, amino groups, or fluoro groups. Specific examples of such polyorganosiloxanes include vinyl dimethicone, amodimethicone, and trifluoropropyl dimethicone. In addition, the polyorganosiloxane may be a cross-linked product of different types of polyorganosiloxanes; specific examples of such polyorganosiloxanes include dimethicone / vinyl dimethicone crosspolymers. One polyorganosiloxane may be used alone, or two or more polyorganosiloxanes may be used in combination.

[0026] The average size of the polyorganosiloxane particles having a polyorganosiloxane core covered with a polymer shell is preferably from 5 microns to 300 microns.

[0027] The term "polyorganosiloxane particles" may also refer to "encapsulated polyorganosiloxane polymer particles having a polyorganosiloxane core and a polymer shell," wherein the polymer shell is not made of a polyorganosiloxane polymer. Such polyorganosiloxane particles can advantageously be dispersed in water and polyols in a stable manner.

[0028] The polyorganosiloxane particles can be dispersed in a dispersion medium that may contain water and / or a polyol, and preferably contains water and at least one polyol. Examples of the polyol include the same polyols described above. Among them, glycerol or pentanediol are preferred. A single polyol may be used alone, or two or more polyols may be used in combination.

[0029] The polyorganosiloxane core can be encapsulated with a polymer shell. This encapsulation can be achieved when a cationic water-soluble polymer (e.g., carboxyvinyl polymer, INCI name carbomer) dissolved in a solvent forms a cohesion with an anionic polymer (e.g., amodimethicone) to form a shell around the core. For example, a preferred shell comprises a carboxyvinyl polymer (e.g., carbomer) and amodimethicone. Encapsulated polyorganosiloxane particles are described, for example, in US 2015 / 0272861 and can be mixed with other ingredients in the form of a dispersion during the preparation of a cosmetic product, as further described below.

[0030] Encapsulated dimethicone / vinyl dimethicone crosspolymer is preferred as the polyorganosiloxane particles.

[0031] The content of the polyorganosiloxane particles is preferably 5% to 25% by mass, and more preferably 10% to 20% by mass, based on the total mass of the cosmetic. The content of the polyorganosiloxane particles may be between two values selected from the group consisting of 5 wt%, 10 wt%, 15 wt%, 20 wt%, and 25 wt% relative to the weight of the cosmetic.

[0032] The content of the polyol is preferably 15% to 60% by mass, for example 30% to 45% by mass, based on the total weight of the cosmetic. The content of the polyol may be between two values selected from the group consisting of 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, 55% and 60% by weight relative to the weight of the cosmetic. A polyol content below 15% results in a cloudy cosmetic with low nourishing properties. A polyol content above 60% results in a cosmetic that is slippery, cloudy and greasy.

[0033] Based on the total weight of the cosmetic, the water content is preferably 20% to 70% by weight, preferably 35% to 55% by weight, and more preferably 40% to 50% by weight. The water content can be between two values selected from the group consisting of 20%, 25%, 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65% and 70% by weight relative to the weight of the cosmetic. A water content below 20% results in a cloudy cosmetic with a low fresh water feel. A water content above 70% results in a low nourishing and insufficiently refreshing feel.

[0034] In addition to the aqueous medium and the polyorganosiloxane dispersion, the silicone-in-water cosmetic according to this embodiment also contains a hydrophilic polymer. As used in this application, the term "hydrophilic polymer" means a polymer that dissolves in water or swells in water when used in the amounts described above. In the silicone-in-water cosmetic according to this embodiment, the hydrophilic polymer is a polymer, polysaccharide, or combination thereof containing (meth)acryloylalkyltaurine or its salt as a repeating unit. As used in this application, the term "(meth)acryloyl" refers to an acryloyl group or a methacryloyl group.

[0035] Examples of (meth)acryloylalkyltaurine include acryloyldimethyltaurine and methacryloyldimethyltaurine. Examples of its salts include sodium salts and ammonium salts. The polymer containing (meth)acryloylalkyltaurine or its salt as a repeating unit may be a polymer (or homopolymer) of (meth)acryloylalkyltaurine or its salt, a copolymer of (meth)acryloylalkyltaurine or its salt and other polymerizable monomers, or a cross-linked polymer. Specific examples of the polymer containing (meth)acryloylalkyl taurine or a salt thereof as a repeating unit include: acrylamide / sodium acryloyldimethyltaurate copolymer, ammonium acryloyldimethyltaurate / beheneth-25 methacrylate crosspolymer, ammonium acryloyldimethyltaurate / laureth-7 methacrylate crosspolymer, ammonium acryloyldimethyltaurate / steareth-25 methacrylate crosspolymer, ammonium acryloyldimethyltaurate / steareth-8 methacrylate copolymer, ammonium polyacryloyldimethyltaurate, hydroxyethyl acrylate / sodium acryloyldimethyltaurate copolymer, sodium acrylate / acryloyldimethyltaurate / dimethylacrylamide crosspolymer, sodium acrylate / acryloyldimethyltaurate The following are some of the following: sodium acrylate / sodium acryloyldimethyl taurate / acrylamide copolymer, sodium polyacryloyldimethyl taurate, dimethylacrylamide / sodium acryloyldimethyl taurate crosspolymer, sodium acryloyldimethyl taurate / vinyl pyrrolidone crosspolymer, sodium acryloyldimethyl taurate / methacrylamide lauric acid copolymer, sodium acryloyldimethyl taurate / PEG-8 diacrylate crosspolymer, ammonium acryloyldimethyl taurate / vinyl pyrrolidone copolymer, ammonium acryloyldimethyl taurate / carboxyethyl ammonium acrylate crosspolymer, sodium acrylate / acryloyldimethyl taurate copolymer, hydroxyethyl acrylate / sodium acryloyldimethyl taurate copolymer, and acrylamide / sodium acryloyldimethyl taurate / acrylic acid copolymer. Among them, ammonium acryloyldimethyl taurate / beheneth-25 methacrylate crosspolymer or hydroxyethyl acrylate / sodium acryloyldimethyl taurate copolymer are preferred.

[0036] The polysaccharide is preferably a polysaccharide having a weight average molecular weight of 5,000 or more. Examples of such polysaccharides include non-starch polysaccharides, hyaluronic acid or a salt thereof, chondroitin sulfate or a salt thereof, pullulan, agar, agar-derived polysaccharides (composed of agarose and agar gum), and Tremella fuciformis polysaccharide products (product name: Tremoist-TP; manufactured by Nippon Fine Chemical Co., Ltd.).

[0037] Pullulan can be an exopolysaccharide secreted by the polymorphic fungus Aureobasidium pullulans. The molecule is a linear α-D-glucan composed of regularly repeating trisaccharide units. The trisaccharide unit is maltotriose, in which three glucose units are linked by 1,4-glycosidic bonds. Each maltotriose unit is linked to a series of three other maltotriose ends by 1,6-glycosidic bonds, resulting in a long ladder-like structure. The molecular weight of pullulan can range from 50,000 to 500,000 Daltons, depending on the conditions under which the organism is grown.

[0038] One type of hydrophilic polymer may be used alone, or two or more types of hydrophilic polymers may be used in combination.

[0039] In silicone-in-water cosmetics, the hydrophilic polymer mainly contributes to the effect of controlling stickiness and greasiness on the skin, and the content of the hydrophilic polymer is desirably 0.001% by mass to 5.0% by mass based on the total mass.

[0040] From the viewpoint of more significantly controlling the greasy feel of the silicone-in-water cosmetic on the skin, the content of the hydrophilic polymer in the silicone-in-water cosmetic is more preferably between two values selected from the group consisting of 0.001 mass%, 0.01 mass%, 0.02 mass%, 0.03 mass%, 0.05 mass%, 0.1 mass%, 0.3 mass%, 0.5 mass%, 1.0 mass%, 1.2 mass%, 1.4 mass%, 1.6 mass%, 1.8 mass%, 2.0 mass%, 2.2 mass%, 2.4 mass%, 2.6 mass%, 2.8 mass%, 3.0 mass%, 3.2 mass%, 3.4 mass%, 3.6 mass%, 3.8 mass%, 4.0 mass%, 4.5 mass% and 5.0 mass%, for example, 0.03 mass% to 2.0 mass%, and preferably 0.05 mass% to 2.0 mass%, based on the mass of the cosmetic.

[0041] The viscosity of the silicone-in-water cosmetic according to this embodiment can be in the range of 250 mPa.s to 100,000 mPa.s at 25°C. By setting the viscosity range to this range, the polyorganosiloxane can be more stably dispersed in the aqueous medium. From the perspective of more stably dispersing the polyorganosiloxane in the aqueous medium, the viscosity of the silicone-in-water cosmetic at 25°C is more preferably 500 mPa.s to 50,000 mPa.s, and more preferably 1,000 mPa.s to 25,000 mPa.s, for example, 1,500 mPa.s to 2500 mPa.s. The viscosity can be measured using a rotational rheometer (e.g., Rheolab QC; manufactured by Anton Paar GmbH) under conditions known to those skilled in the art.

[0042] In addition to the above ingredients, the silicone-in-water cosmetic may contain other compounds such as oils, UV absorbers, antioxidants, brown discoloration preventives, preservatives, bioskin active agents, stabilizers, dyes, fragrances, and the like.

[0043] The cosmetics of the present invention advantageously contain very small amounts of surfactants, very small amounts of oils, very small amounts of oil-based gelling agents, and / or very small amounts of solid particles other than the aforementioned polyorganosiloxane particles. In the context of the present invention, very small amounts mean less than 5% by weight, preferably less than 3% by weight, most preferably less than 1% by weight, or even less than 0.1% or 0.05% by weight, relative to the weight of the cosmetic. According to preferred embodiments, the cosmetic contains no surfactants, no oils, no oil-based gelling agents, and / or no solid particles other than the aforementioned polyorganosiloxane particles. The silicone-in-water cosmetics of the present invention preferably contain essentially water, a polyol, polyorganosiloxane particles, and a hydrophilic polymer; "essentially" means that the mixture of water, polyol, polyorganosiloxane particles, and hydrophilic polymer represents an amount of at least 90% by weight, preferably at least 95% by weight, and more preferably at least 99% by weight, relative to the weight of the cosmetic.

[0044] The present invention also concerns a method for preparing a transparent silicone-in-water cosmetic as disclosed herein above, comprising: a step of preparing (a) an aqueous medium by mixing water and a first polyol; a step of adding (b) a polyorganosiloxane dispersion of polyorganosiloxane particles dispersed in water and a second polyol to the aqueous medium, the second polyol being the same as or different from the first polyol; wherein the difference in refractive index between (a) the aqueous medium and (b) the polyorganosiloxane dispersion is within ±0.05, or preferably within ±0.01.

[0045] In the (a) aqueous medium, the amount of water relative to the polyol is preferably 0.20 parts by mass to 10.0 parts by mass, more preferably 0.30 parts by mass to 5.0 parts by mass, and further preferably 0.40 parts by mass to 4.0 parts by mass.

[0046] The content of the polyorganosiloxane dispersion used for preparing the cosmetic and mixed with other components to prepare the cosmetic is preferably 20% to 60% by mass, and more preferably 25% to 55% by mass, or 30% to 50% by mass, based on the total mass of all ingredients used to prepare the cosmetic. In addition, in the silicone-in-water cosmetic, the mass ratio of (b) the polyorganosiloxane dispersion to (a) the aqueous medium mixed with the dispersion is preferably 0.05 to 1.0 parts by mass, and more preferably 0.10 to 0.80 parts by mass. Specific examples of polyorganosiloxane dispersions include dispersions of encapsulated dimethicone / vinyl dimethicone crosspolymer (product name: Manufactured by NuSil Technology LLC) and a dispersion of trifluoropropyl dimethicone (Product Name: Manufactured by NuSil Technology LLC).

[0047] The mass ratio of the hydrophilic polymer to the (a) aqueous medium is preferably 0.00001 to 0.05 parts by mass, more preferably 0.0001 to 0.05 parts by mass, and further preferably 0.0005 to 0.05 parts by mass.

[0048] The production of the silicone-in-water cosmetic according to this embodiment can be carried out as follows. Specifically, water and a polyol are stirred and mixed until uniform, thereby obtaining an aqueous medium. A polyorganosiloxane dispersion raw material (comprising polyorganosiloxane particles coated with a polymer shell in the dispersion medium) and a hydrophilic polymer are then added to the aqueous medium simultaneously or at different times, and the entire mixture is stirred and mixed until uniform. When the silicone-in-water cosmetic contains the aforementioned additives, their addition can be performed at any stage of production.

[0049] In the silicone-in-water cosmetic according to this embodiment, the difference in refractive index between (a) the aqueous medium and (b) the polyorganosiloxane dispersion is preferably within ±0.05, more preferably ±0.01. By keeping the refractive index difference within this range, the silicone-in-water cosmetic can be made translucent or transparent. As described above, the refractive index difference can be adjusted to within ±0.05 by appropriately setting the ratio of (b) the polyorganosiloxane dispersion to (a) the aqueous medium and the mass ratio of water to polyol in the aqueous medium. The refractive index can be measured using a refractometer (e.g., Abbemat 550; manufactured by Anton Paar GmbH).

[0050] The polyorganosiloxane dispersion raw material is mixed with other ingredients (such as polyols, water and hydrophilic polymers) to form a cosmetic. This polyorganosiloxane dispersion is used as an ingredient to be mixed with other ingredients for preparing cosmetics.

[0051] In particular, the polyorganosiloxane dispersion mixed with water and a polyol is preferably in the form of a dispersion containing a polyol, wherein the polyol is preferably the same polyol as that previously stirred and mixed with water. The polyorganosiloxane dispersion raw material also preferably contains another polyol such as pentylene glycol. The dispersion may also contain additional compounds such as dimethicone, preservatives, sodium hydroxide, and disodium EDTA.

[0052] The polyorganosiloxane particles may preferably comprise a core encapsulated material covered with a polymer shell, the polymer shell being derived from an anionic polymer and a cationic polymer. The anionic polymer may be a polyacrylic polymer, such as carbomer; the cationic polymer may be an amine functionalized polyorganosiloxane, such as amodimethicone, and the core encapsulated material may be a polyorganosiloxane, such as dimethicone / vinyl dimethicone crosspolymer.

[0053] The silicone-in-water cosmetic according to this embodiment can be used as, for example, a toner, an essence, a hydrogel, etc. A person skilled in the art can easily determine whether the polyorganosiloxane particles are dispersed in the aqueous phase. In the context of the present invention, the aqueous phase forms a continuous phase in the cosmetic.

[0054] Example

[0055] Hereinafter, the silicone-in-water cosmetic will be further described through examples of the present invention; however, the present invention is not limited to the following examples.

[0056] Test example: Water-in-silicone cosmetics

[0057] Water, glycerin and phenoxyethanol were stirred and mixed to be uniform, thereby obtaining an aqueous medium heated to a temperature of 50° C. to 60° C. A hydrophilic polymer and a polyorganosiloxane dispersion (product name: The hydrophilic polymer is pullulan (manufactured by Hayashibara Co. Ltd.) or hydroxyethyl acrylate / sodium acryloyldimethyl taurate copolymer (product name: NS; manufactured by Seppic). The resulting mixture was cooled to 30°C, stirred, and mixed until it became uniform to prepare various cosmetics (Example 1, Example 2, Example 3, Example 4, and Comparative Example 1) as shown in the following table. The proportions (mass %) of the mixed ingredients are shown in the following table.

[0058] (1) Transparency evaluation and refractive index measurement

[0059] An appropriate amount of each of the cosmetics prepared above was dropped on a plate having clear, visually recognizable written letters, and evaluated according to the following criteria.

[0060] Transparent: Letters can be clearly identified visually.

[0061] Translucent: Letters can be visually identified.

[0062] Cloudy: Letters cannot be visually discerned.

[0063] The refractive index of the aqueous medium and the polyorganosiloxane dispersion was measured using a refractometer (Abbemat 550; manufactured by Anton Paar GmbH). For Example 1, Example 2, Example 3, and Example 4, the refractive index of the aqueous medium (composed of water, glycerin, and phenoxyethanol) and the refractive index of the polyorganosiloxane dispersion were The difference in refractive index is within ±0.01.

[0064] (2) Viscosity measurement

[0065] The viscosity of each of the cosmetics prepared above was measured using a rotational rheometer [eg, Rheolab QC; manufactured by Anton Paar GmbH; rotation speed of 50 rpm (3 minutes)].

[0066] (3) Stability assessment

[0067] The cosmetics of Example 1, Example 2, and Comparative Example 1 were each housed in two transparent containers sealed with lids and stored at 50°C and 4°C for one month. After storage, the presence or absence of separation between the oil phase and the aqueous phase was observed. No separation between the oil phase and the aqueous phase was observed at both 50°C and 4°C, resulting in a rating of "Y." Separation between the oil phase and the aqueous phase was observed at either 50°C or 4°C, resulting in a rating of "N."

[0068] (4) Sensory evaluation

[0069] According to the following criteria, a cosmetics evaluation panel organized by the present inventors evaluated the nourishing effect, fresh water feeling, lack of stickiness and lack of oiliness of each of the cosmetics prepared above in a single use test.

[0070] A: Noticed; B: Generally; C: Not Noticed

[0071]

[0072] The cosmetic of Comparative Example 1, which does not contain a hydrophilic polymer, lacks a nourishing effect and a refreshing, watery feel, while a distinctly sticky and greasy feel is noticeable. In contrast, the cosmetics of Examples 1 and 2, which contain pullulan as a hydrophilic polymer, and the cosmetics of Examples 3 and 4, which contain a hydroxyethyl acrylate / sodium acryloyldimethyl taurate copolymer as a hydrophilic polymer, exhibit transparency, a good nourishing effect, and a refreshing, watery feel, while also keeping the stickiness and greasy feel under control.

Claims

1. A transparent or translucent silicone-in-water cosmetic comprising water, at least one polyol, a monool, a polyorganosiloxane dispersion comprising encapsulated polyorganosiloxane particles comprising a polyorganosiloxane core covered with a polymer shell, and a hydrophilic polymer; in, The hydrophilic polymer is pullulan; and wherein the polyorganosiloxane core is a dimethicone / vinyl dimethicone crosspolymer, and the polymer shell comprises a cationic polymer and an anionic polymer, the cationic polymer is amodimethicone, and the anionic polymer is carbomer; and the polyorganosiloxane dispersion is in the form of a dispersion comprising water, the polyol, and the monohydric alcohol; Wherein, the polyol is glycerol, the monohydric alcohol is phenoxyethanol; and the polyorganosiloxane dispersion further comprises pentylene glycol, dimethicone, sodium hydroxide and disodium EDTA; The amount of the polyol is 15 wt % to 45 wt %, the amount of the water is 20 wt % to 55 wt %, the amount of the polyorganosiloxane dispersion is 40 wt %, and the amount of the hydrophilic polymer is 1.0 wt % to 2.0 wt %.

2. The silicone-in-water cosmetic according to claim 1, wherein: The cosmetic comprises an aqueous medium comprising water and a polyol, and the polyorganosiloxane particles are dispersed in the aqueous medium to form a continuous phase.

3. The silicone-in-water cosmetic according to claim 2, wherein: The content of the aqueous medium is 50% to 95% by mass based on the total mass of the cosmetic.

4. The silicone-in-water cosmetic according to claim 1, wherein: The mass ratio of the water to the polyol is between 0.3 and 8.

0.

5. The silicone-in-water cosmetic according to claim 2, wherein: The mass ratio of the polyorganosiloxane dispersion to the aqueous medium is 0.05 to 1.

0.

6. The silicone-in-water cosmetic according to claim 1, wherein: The amount of the polyorganosiloxane particles is 10 wt % to 20 wt %. The silicone-in-water cosmetic according to claim 1 , wherein the viscosity of the cosmetic at 25° C. is 250 to 100,000 mPa.s.

8. The silicone-in-water cosmetic according to any one of claims 1 to 7, wherein: The amount of the mixture of water, polyol, polyorganosiloxane particles and hydrophilic polymer is at least 90% by weight of the cosmetic.

9. A method for preparing the transparent or translucent silicone-in-water cosmetic according to any one of claims 1 to 8, the method comprising: a step of preparing (a) an aqueous medium by mixing water and a polyol; The step of adding (b) a polyorganosiloxane dispersion of polyorganosiloxane particles dispersed in water and a hydrophilic polymer to an aqueous medium; wherein the difference in refractive index between the (a) aqueous medium and the (b) polyorganosiloxane dispersion is within ±0.05, the polyol is glycerol, and the hydrophilic polymer is pullulan.

10. The method according to claim 9, wherein: The difference in refractive index between the (a) aqueous medium and the (b) polyorganosiloxane dispersion is within ±0.01.

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