JP4041475B2 - Self-emulsifying oily solid cosmetic - Google Patents

Description

  The present invention relates to a self-emulsifying type oily solid cosmetic based on a specific polyglycerin fatty acid ester and an oily component, and more specifically, there is no concern about safety to the human body and storage stability. The present invention relates to a self-emulsifying type oily solid cosmetic which is excellent and easily self-emulsifies even in a solid form, has excellent dispersibility in water, and also has a good feeling in use.

  Self-emulsifying type oily solid cosmetics are those that undergo phase inversion upon contact with water to produce oil-in-water emulsions. As typical examples of self-emulsifying type oily solid cosmetics, cleansing cosmetics, for baths There are cosmetics.

In recent years, makeup cosmetics are demanded to be hard to fall off, and the preference for thick-coated makeup is increasing due to the trend. For this reason, cleansing cosmetics intended to remove makeup cosmetics such as foundations and lipsticks based on oily ingredients are required to have strong detergency.
Cleansing cosmetics are available in various dosage forms on the market. For example, water-based, oil-based (oil-based), polyhydric alcohol-based, liquid crystal-based liquid, gel-like, cream-like, solid Examples of shaped dosage forms are mentioned. Among them, oil-based cleansing cosmetics are known to have the highest detergency because they have excellent compatibility with cosmetic oil components. As a result, the most widely distributed product on the market is a self-emulsifying type oily product comprising a mixed system of an oily component and a surfactant. This product has the property that phase inversion occurs quickly when it comes in contact with water. First, the stain is transferred to the oily component by blending cleansing cosmetics and makeup stains, and then soiled by contact with water. An oil-in-water emulsion containing oily components is produced and poured into water as it is to remove makeup.

  Such a self-emulsifying type oily cosmetic needs to contain a surfactant having a high concentration of 8 to 30% by mass in order to quickly self-emulsify when it comes into contact with water. Polyoxyethylene sorbitan branched fatty acid esters, polyethylene glycol branched fatty acid esters, polyoxyethylene branched alkyl ethers and the like are used as general surfactants used in self-emulsifying oily cosmetics. It has been conventionally known that surfactants have safety concerns. Self-emulsifying oil-based cleansing cosmetics formulated with a high concentration of this polyoxyethylene-based surfactant can be applied directly to the skin, which may cause problems such as a strong sensation after washing and skin problems. There were concerns about safety. In addition, polyoxyethylene-based surfactants tend to vary in hydrophilicity and lipophilicity depending on the temperature, and cleansing cosmetics obtained by using these are easily affected by temperature. In some cases, the characteristics were poor. In addition, it has a very bad taste and smell when mixed in the mouth, and when used on a facial part, especially in cleansing cosmetics that often mix in the mouth when removing lipstick etc., discomfort is prominent. there were. In order to solve the problems of cosmetics using polyoxyethylene surfactants, for example, cosmetics using polyglycerin fatty acid esters are disclosed (Patent Document 1).

  Polyglycerin fatty acid esters are surfactants that are highly safe, have no flavor and odor discomfort, are widely used in foods, and are less likely to vary in hydrophilicity and lipophilicity depending on temperature. Generally distributed polyglycerin fatty acid esters have different characteristics in the oil component depending on the esterification rate of the fatty acid with respect to the hydroxyl group of the polyglycerin, but are difficult to dissolve or dissolve in the oil component. However, the composition has a problem of poor dispersibility in water and does not self-emulsify. Therefore, even if such a self-emulsifying oil-based cleansing cosmetic comprising a polyglycerin fatty acid ester and an oil component is prepared, the storage stability of the product is deteriorated due to solubility problems, or the dispersibility in water is poor. As a result, the dirt cannot be washed away, and the oily component remains on the skin, resulting in a very sticky feeling. Therefore, in the self-emulsifying oil-based cleansing cosmetic, the polyglycerin fatty acid ester is only used as an emulsification aid.

 On the other hand, conventional self-emulsifying oil-based cleansing cosmetics can be used to clean stains that are difficult to remove, such as thick-coated foundations and mascara containing oil-resistant and water-resistant ingredients. In the process of lifting, there was a problem that the skin was apt to be rubbed by all means, causing skin troubles and missing eyelashes. And in the process of self-emulsification in contact with water, which is the next step, it will disperse in water via liquid crystal and white gel, but since it is difficult to disperse quickly in water, it will remain as a slimy feeling on the skin forever However, there was a problem that it took time to rinse.

Since the self-emulsifying type oily liquid cosmetic is liquid, it has a drawback that dripping occurs when it is applied to the hand or applied to the face. Moreover, even if it is intended to increase the cleaning power by adding a powder component that is a scrub agent, it is difficult to mix the powder component because the powder component is precipitated because the entire system is liquid. There was a problem.
In order to overcome this problem, oil-based gelling agents and solid fats are blended, and solid oil-based cleansing cosmetics having no fluidity at room temperature are disclosed (Patent Documents 2 and 3). . Unlike oily liquid cleansing cosmetics that have fluidity at room temperature, they do not cause dripping when applied to the face, and are extremely excellent in usability. However, when the powder component is contained, there is a problem that the powder component is difficult to uniformly disperse in the product.
Furthermore, cleansing cosmetics made solid only with the hardness of oily gelling agent and solid fat have the advantage that dripping does not occur, but it is necessary to blend a lot of oily gelling agent and solid fat, It was difficult to wash away and a sticky feeling remained, which was not satisfactory.

Bath cosmetics are often used at the time of bathing to prevent rough skin, cracks and tears, and to improve the skin condition. Examples of bath cosmetic preparations include bath salt, bath oil, and herbal medicine. Among them, self-emulsifying oil-based bath oil type products consisting of a mixture of oily components and surfactants are self-emulsified in a hot water bath and the fine oily components are uniformly dispersed in the hot water. However, various improvement effects such as emollient, moisturizing property, anti-inflammation, warm bath, etc. that the oil component originally possesses can be expected.
However, conventional self-emulsifying oil-based bath cosmetics composed of a mixture of an oil component and a surfactant have insufficient dispersibility in hot water, and remain in the bath cosmetic formulation without self-emulsification. There was a problem that floated. As a result, there is a problem that not only the skin feel after bathing, such as an uncomfortable feeling in the bath water and a moist feeling on the skin, but also bath cosmetics adhere to the bathtub wall. Therefore, a solid self-emulsifying oily bath cosmetic that has an excellent feeling of use and does not need to be metered unlike a liquid and is easy to handle has been desired.

Further, for the same reason as cleansing cosmetics, polyglycerin fatty acid esters are hardly used in bath cosmetics, and when used, they are only used as emulsification aids.
JP 58-185537 A JP 2001-213726 A JP 2002-370930 A

  The object of the present invention is to improve the above-mentioned problems, there is no concern about safety to the human body, it is excellent in storage stability, and it is easily dispersible in water by being self-emulsified even in a solid state. Is a self-emulsifying type oily solid cosmetic which is excellent in use and also has a good feeling in use.

  As a result of intensive studies to solve the above problems, the present inventors have found that a self-emulsifying oily solid cosmetic based on a specific polyglycerin fatty acid ester and an oil component can solve the above problems, The invention has been completed. In addition, solid form in this invention does not have fluidity at normal temperature, and normal temperature means 15-25 degreeC. The self-emulsifying oily solid cosmetic of the present invention includes quasi drugs.

That is, the first invention of the present invention is a self-emulsifying oily solid cosmetic comprising 8-30% by mass of the following component A and 30-92% by mass of component B.
Component A: Polyglycerin fatty acid ester having a hydroxyl value of 450 to 700 and 50 to 100% by mass of all constituent fatty acid residues being a linear saturated fatty acid residue having 16 to 22 carbon atoms, In the polyglycerol which comprises, the total composition ratio of the diglycerol and the trimer polyglycerin cyclic product is 0 to 3% in the total polyglycerol, and the total composition ratio of the polyglycerol of 11-mer or more is in the total polyglycerol. The polyglycerol fatty acid ester in which each composition ratio of 10 to 30% and 4 to 10-mer polyglycerol is 4 to 20% in the total polyglycerol.
Component B: Oily component.

  In 1st invention, it is preferable that the compounding quantity of the component B is 30-91 mass%.

 In 1st invention, it is preferable that a C16-C22 linear saturated fatty acid residue is a stearic acid residue and a behenic acid residue.

  In 1st invention, it is preferable that the compounding quantity of water is 0-2 mass%.

  In 1st invention, it is preferable not to mix | blend water.

  In the first invention, the electric conductivity at 25 ° C. is preferably 0.1 μS / cm or less and is preferably dissolved in a hydrocarbon solvent.

  In the first invention, the self-emulsifying oily solid cosmetic is preferably a cleansing cosmetic.

  In the first invention, the self-emulsifying oily solid cosmetic is preferably a bath cosmetic.

In the second invention of the present invention, the compounding amount of the following component D is 8 to 30% by mass, the compounding amount of component B is 30 to 91% by mass, and the compounding amount of component C is 0 of the compounding amount of component D. A self-emulsifying oily solid cosmetic, characterized by being from 1 to 100% by mass.
Component D: Polyglycerin fatty acid ester having a hydroxyl value of 550 to 700 and 50 to 100% by mass of all constituent fatty acid residues being a linear saturated fatty acid residue having 16 to 22 carbon atoms, In the polyglycerol which comprises, the total composition ratio of the diglycerol and the trimer polyglycerin cyclic product is 0 to 3% in the total polyglycerol, and the total composition ratio of the polyglycerol of 11-mer or more is in the total polyglycerol. The polyglycerol fatty acid ester in which each composition ratio of 10 to 30% and 4 to 10-mer polyglycerol is 4 to 20% in the total polyglycerol.
Component B: Oily component.
Component C: a polyhydric alcohol fatty acid ester having a hydroxyl value of 100 to 500 (excluding component D) and / or a polyhydric alcohol alkyl ether having a hydroxyl value of 100 to 500.

  In 2nd invention, it is preferable that the compounding quantity of water is 0-2 mass%.

  In 2nd invention, it is preferable not to mix | blend water.

  In the second invention, the electrical conductivity at 25 ° C. is preferably 0.1 μS / cm or less and is preferably dissolved in a hydrocarbon solvent.

  In the second invention, the self-emulsifying oily solid cosmetic is preferably a cleansing cosmetic.

  In the second invention, the self-emulsifying oily solid cosmetic is preferably a bath cosmetic.

  The self-emulsifying type oily solid cosmetic of the present invention has no concern about safety, is easily self-emulsified, has excellent dispersibility in water, has a good feeling of use, and has good storage stability. is there.

  Further, since the self-emulsifying type oily solid cosmetic of the present invention is solid, it does not cause dripping during use, and even if the powder component is blended, the powder component is uniformly distributed in the product. It can be stably dispersed without precipitation. And since it is solid, the shaping | molding process of goods can be performed freely.

  Furthermore, when the self-emulsifying type oily solid cosmetic of the present invention is used as a cleansing cosmetic, the oily component does not remain on the skin, so that the occurrence of acne and breakout due to the remaining oily component can be eliminated. Also, when used as a bath agent, the feeling of use is excellent. Furthermore, the self-emulsifying oily solid cosmetic of the present invention can be applied to cosmetics (including quasi-drugs) such as cosmetic oil, hair cleansing, massage oil, or hair treatment, and pharmaceuticals. The self-emulsifying oily solid cosmetic of the present invention is very versatile.

First, the first invention of the present invention will be described.
The first invention of the present invention comprises component A and component B as essential components.
First, component A will be described.
Component A used in the present invention has a hydroxyl value of 450 to 700, preferably 500 to 650, more preferably 550 to 650. When the hydroxyl value is less than 450, the resulting self-emulsifying oily solid cosmetic has low self-emulsification properties, so the dispersibility in water is poor, and when the hydroxyl value is greater than 700, the solubility in oily components is poor. This is because the purpose as a self-emulsifying oily solid cosmetic cannot be achieved.

 The measurement of the hydroxyl value described in the present invention is based on the standard fat and oil analysis test method, and the number of mg of potassium hydroxide required to neutralize acetic acid necessary for acetylating free hydroxyl groups contained in 1 g of a sample. Can be measured.

Next, 50 to 100% by mass, preferably 55 to 95% by mass, and most preferably 60 to 90% by mass of the total fatty acid residues of the polyglycerin fatty acid ester of component A is linear saturated with 16 to 22 carbon atoms. It is a fatty acid residue.
When the fatty acid residue having 15 or less carbon atoms is 50 to 100% by mass of the total fatty acid residue, it is difficult to obtain a solidified residue, and the fatty acid residue having 23 or more carbon atoms is 50 of the total fatty acid residue. It is because the self-emulsification type oily solid cosmetic obtained is too hard and the dispersibility to water becomes bad as it is -100 mass%. Moreover, it is because it will become difficult to obtain what solidified that a C16-C22 linear unsaturated fatty acid residue and branched fatty acid residue are 50-100 mass% of all the constituent fatty acid residues. If the linear saturated fatty acid residue having 16 to 22 carbon atoms is 50 to 100% by mass of the total fatty acid residue, it is solid and not too hard, and it is a self-emulsifying oily solid having good dispersibility in water. Shape cosmetics can be obtained.

  Examples of the linear saturated fatty acid residue having 16 to 22 carbon atoms include a palmitic acid residue, a stearic acid residue, an eicosanoic acid residue, a behenic acid residue and the like, and in particular, a stearic acid residue and a behenic acid residue are included. preferable.

  The polyglycerin constituting the polyglycerin fatty acid ester of component A is required to have a total composition ratio of dimer and trimer polyglycerin cyclics of 0 to 3% in the total polyglycerin, and more preferably. Is 0 to 2%, most preferably 0 to 1%. Because, when the total composition ratio of the dimer and the trimer polyglycerin cyclic product is more than 3%, the self-emulsification type oily solid cosmetic obtained has low self-emulsification property, so that the dispersibility in water is low. It is bad and causes separation during storage. Some dimers or trimers of polyglycerin are composed of only acyclic substances, but some are composed of both cyclic and acyclic substances. Moreover, there is no restriction | limiting in particular in the composition ratio of a diglycerol and a trimer polyglycerin non-cyclic material.

 In addition, the polyglycerin constituting the polyglycerin fatty acid ester of component A is required to have a total composition ratio of 11 or more polyglycerin of 10 to 30% in the total polyglycerin, more preferably 12 to 28. %, Most preferably 15-26%. This is because if the content is outside the range of 10 to 30%, the resulting self-emulsifying type oily solid cosmetic material has low self-emulsifying properties, so that the dispersibility in water becomes poor.

 Furthermore, the polyglycerin constituting the polyglycerin fatty acid ester of component A needs to be 4 to 20% in the total polyglycerin, and more preferably 4 to 15%. %, Most preferably 5-12%. When each composition ratio of the 4-10 mer polyglycerin is out of this range, the self-emulsifying oily solid cosmetic product obtained has low self-emulsifying property, so the dispersibility in water is poor and separation occurs during storage. Because it will end up. In addition, in the polyglycerol fatty acid ester of the component A, a monomer (glycerol) may be included as constituent polyglycerol.

 A suitable method for measuring the composition ratio of polyglycerin is to use polyglycerin as a polyglycerin derivative, and separate and determine the polyglycerin derivative by the GC method (gas chromatographic method). The analysis by the GC method can be easily carried out if a temperature rising analysis is performed at 10 ° C./min from 100 ° C. to 250 ° C. using a fused silica capillary tube in which a low polar liquid phase such as methyl silicon is chemically bonded. Can do. In addition, a gas chromatograph is introduced into a double-focusing mass spectrograph, ionized and measured by a method such as chemical ionization, then the molecular weight of the peak on the gas chromatogram is obtained from the molecular weight of its parent ion, and further from the chemical formula This can be done easily by determining the degree of polymerization of glycerin. However, it is not restricted to these methods.

 The compounding amount of Component A in the self-emulsifying oily solid cosmetic of the present invention is 8 to 30% by mass, preferably 10 to 25% by mass, and most preferably 12 to 20% by mass. This is because if it is less than 8% by mass, the self-emulsification becomes poor, and if it exceeds 30% by mass, the dispersibility in water becomes poor.

 The polyglycerin constituting the polyglycerin fatty acid ester of component A may be of the composition ratio described above, and may be produced by dehydration condensation, a known epichlorohydrin or a synthesis and purification method using glycidol as a starting material, and is commercially available. Product can be used. Examples of commercially available products include Great Oil D-10, Great Oil D-11, and Great Oil D-12 manufactured by Taiyo Kagaku Co., Ltd.

The polyglycerol fatty acid ester which is the component A of the present invention can be produced by a known method for producing a polyglycerol fatty acid ester, except that the raw material to be charged is specified.
For example, the total composition ratio of a specific polyglycerin, that is, a dimer and a trimer polyglycerin cyclic product is 0 to 3% in the total polyglycerin, and the total composition ratio of the polyglycerin of 11 or more is a total polyglycerin. 10-30% of the polyglycerin and the composition ratio of the polyglycerin of 4-10 mer is 4-20% of the total polyglycerin (for example, product manufactured by Taiyo Kagaku Co., Ltd .: Great Oil D-10 ), A fatty acid having 16 to 22 carbon atoms, and a catalyst are placed in a reaction vessel, heated at 200 to 250 ° C., and esterified while stirring in a nitrogen gas stream.
In addition, the hydroxyl value of component A can be adjusted with the preparation ratio of polyglycerol and a fatty acid.

Next, component B will be described.
Component B used in the present invention is an oily component, and is preferably a liquid or paste-like oily component that can be normally used in cosmetics. Illustrating them, examples of oils include natural animal and vegetable oils and fats, semi-synthetic oils and fats, hydrocarbon oils, higher fatty acids, ester oils, glyceride oils, silicone oils, animal and plant and synthetic essential oil components, fat-soluble vitamins and lecithins, and the like. It is done. These 1 type (s) or 2 or more types can be used.

 Specifically, natural animal and vegetable oils and semi-synthetic oils and fats include avocado oil, linseed oil, almond oil, olive oil, wheat germ oil, sesame oil, rice germ oil, rice bran oil, safflower oil, soybean oil, evening primrose oil, corn Oil, rapeseed oil, horse fat, palm oil, palm kernel oil, castor oil, sunflower oil, jojoba oil, macadamia nut oil, coconut oil, hardened coconut oil, peanut oil, lanolin and the like.

 Examples of the hydrocarbon include squalane, squalene, liquid paraffin, petroleum jelly, and α-olefin oligomer. The ester oils include diisobutyl adipate, 2-hexyldecyl adipate, di-2-heptylundecyl adipate, isostearyl isostearate, trimethylolpropane triisostearate, cetyl 2-ethylhexanoate, di-2-ethyl Neopentyl glycol hexanoate, trimethylolpropane tri-2-ethylhexanoate, pentaerythritol tetra-2-ethylhexanoate, cetyl octoate, oleyl oleate, octyldodecyl oleate, decyl oleate, neopentyl glycol dicaprate, 2-ethylhexyl succinate, isocetyl stearate, butyl stearate, diisopropyl sebacate, cetyl lactate, tetradecyl lactate, 2-ethylhexyl palmitate, 2-hexyl palmitate Decyl, 2-heptylundecyl palmitate, 12-hydroxystearic acid cholesteryl, phytosteryl oleate, diisostearyl malate, p-methoxy cinnamic acid esters, pentaerythritol, and the like Tetorarojin acid.

 Examples of the glyceride oil include glyceryl triisostearate, glyceryl triisopalmitate, glyceryl tri-2-ethylhexanoate, glyceryl tritetradecanoate, diparamethoxycinnamic acid / glyceryl monoisooctylate, and the like. Silicone oils include dimethylpolysiloxane, methylphenylpolysiloxane, methylhydrogenpolysiloxane, octamethylcyclopentasiloxane, decamethylcyclohexasiloxane, stearoxy silicone and other higher alkoxy modified silicones, alkyl modified silicones, higher fatty acid ester modified Examples of silicone and fat-soluble vitamins include tocopherol and its derivatives, retinol and its derivatives.

 An oily gelling agent may be mentioned as another oily component, and the addition of this improves the aging stability of the product. Examples of oily gelling agents include dextrin fatty acid esters such as dextrin palmitate and glyceryl (behenic acid / eicosanedioic acid).

 Examples of lecithin include soy lecithin, egg yolk lecithin, or hydrogenated lecithin whose degree of saturation has been increased by hydrogenation.

   Component B used in the present invention is not limited to the specific examples described above. In particular, it is preferable to use an oily component that is liquid at room temperature because the dispersibility in water becomes better.

 The compounding amount of Component B in the self-emulsifying oily solid cosmetic of the present invention is 30 to 92% by mass, preferably 30 to 91% by mass, more preferably 35 to 85% by mass, and particularly preferably 40 to 85%. % By mass, most preferably 40-68% by mass. This is because if it is less than 30% by mass, the dispersibility in water is poor, and if it exceeds 92% by mass, self-emulsification becomes poor.

  In addition, a powder component (hereinafter also referred to as “component E”) can be added to the self-emulsifying oily solid cosmetic. By blending the powder component (component E), self-emulsifying oily solid cosmetics can be colored, and in cleansing applications, it can act as a scrub agent to further improve the removal of cosmetics, and for bath preparations Can provide a more skin-cleaning action.

  Specific examples of the powder component (component E) include white inorganic pigments such as titanium oxide, silicone-treated titanium oxide, zinc oxide, barium sulfate, iron oxide, carbon black, titanium / titanium oxide sintered product, ultramarine blue, and the like. Colored inorganic pigment, talc, silicone-treated talc, muscovite, kaolin, silicon carbide, bentonite, smectite, anhydrous silicic acid, aluminum oxide, magnesium oxide, zirconium oxide, diatomaceous earth, calcium silicate, barium silicate, magnesium silicate , White body powder such as calcium carbonate, magnesium carbonate, hydroxyapatite, boron nitride, titanium dioxide coated mica, iron oxide mica titanium, silicone-treated mica titanium, fish scale foil, nylon powder, polyethylene resin, fluorine resin, cellulose Organic polymer resin powders such as resin and silicone resin Organic low molecular weight powders such as zinc stearate and N-acyl lysine, natural organic powders such as starch, dextrin, silk powder, cellulose powder, konjac powder, and walnut powder, red 201, red 202, orange 203 Organic pigment powder such as orange 204, blue 404, yellow 401, red 3, red 104, red 106, orange 205, yellow 4, yellow 5, green 3, blue 1 Organic powder pigments such as zirconium, barium or aluminum lakes, metal powders such as mica and gold powder, composite powders such as fine particle titanium oxide-coated titanium mica, etc. are used, and one or more of these are used. can do.

  The blending amount of the powder component (component E) in the self-emulsifying oily solid cosmetic is preferably 0 to 50% by mass, more preferably 0.1 to 50% by mass, particularly preferably 8 to 45% by mass, Most preferably, it is 17-45 mass%.

The self-emulsifying oily solid cosmetic of the present invention can contain water in order to adjust the viscosity of the product and improve usability. In that case, the amount of water in the self-emulsifying oily solid cosmetic is preferably 0 to 2% by mass, more preferably 0 to 1% by mass, and most preferably no water is added. This is because if 2% by mass or more is blended, the storage stability of the product may be impaired, and the water dispersibility may be deteriorated.
The water used in the present invention may be purified water usually used in cosmetics, or water extracted from deep ocean water or animals and plants.

  In order to determine whether a solid cosmetic is oil-based, water-based polyhydric alcohol-based, or non-aqueous polyhydric alcohol-based, a method of measuring electrical conductivity and examining the possibility of electrical conduction And a method of examining solubility in a hydrocarbon solvent (for example, hexane, xylene, etc.) in which a polyhydric alcohol is difficult to dissolve.

The determination that the continuous phase of the self-emulsifying type oily solid cosmetic of the present invention is not water is, for example, measuring the electrical conductivity at 25 ° C. with a commercially available simple electrical conductivity meter, and the electrical conductivity is substantially 0. Specifically, it can be performed by confirming that it is 0.1 μS / cm or less.
The determination that the continuous phase of the self-emulsifying oily solid cosmetic of the present invention is not a polyhydric alcohol is made by confirming that it is dissolved when added to a hydrocarbon solvent such as hexane or xylene. be able to.
In order to confirm that the continuous phase of the self-emulsifying oily solid cosmetic of the present invention is not water or a polyhydric alcohol, the electrical conductivity at 25 ° C. is 0.1 μS / cm or less, and a hydrocarbon solvent is used. It can be confirmed by uniformly dissolving and dispersing.

 Moreover, in this invention, when polyhydric alcohols, such as glycerin and 1.3-butylene glycol (1.3-BG), are mix | blended, it will become difficult to become an oily solid. Moreover, in order to maintain the storage stability, it is possible to produce a gel-like emulsion type or liquid crystal type cosmetic by adding an oily component to a polyhydric alcohol continuous phase containing water. Since the detergency when used and the dispersibility with respect to water are lowered, it is out of the object of the present invention. Therefore, in this invention, it is preferable not to mix polyhydric alcohols. In addition, it is not this limitation about polyhydric alcohols, such as unreacted polyglycerol and glycerol remaining in polyglycerol fatty acid ester, or 1.3-BG, glycerol, propylene glycol contained in water-soluble extracts.

  The self-emulsifying type oily solid cosmetic of the present invention can be blended with known ingredients used in these fields as long as the properties of the present invention are not impaired. Examples include moisturizers, antioxidants, blood circulation promoters, pH adjusters, sequestering agents, ultraviolet absorbers, extracts, colorants, fragrances and the like.

Next, the second invention of the present invention will be described.
In the second aspect of the present invention, component D, component B and component C are essential components.
Component D used in the second invention is the same as Component A, except for the hydroxyl value of 550 to 700, such as composition, production method, and blending amount in the self-emulsifying oily solid cosmetic. The hydroxyl value is preferably 580 to 650. By using Component D, the temporal stability of the self-emulsifying oily solid cosmetic is further improved. Component B used in the second invention is the same as component B used in the first invention. However, the blending amount in the self-emulsifying oily solid cosmetic is 30 to 91% by mass, preferably 35 to 85% by mass, particularly preferably 40 to 85% by mass, and most preferably 40 to 68% by mass. is there.

Next, component C will be described.
Component C used in the present invention is a polyhydric alcohol fatty acid ester having a hydroxyl value of 100 to 500 (excluding component D) and / or a polyhydric alcohol alkyl ether having a hydroxyl value of 100 to 500.
Further, Component C is more preferably a polyhydric alcohol fatty acid ester (excluding Component D) having a hydroxyl value of 200 to 450 and / or a polyhydric alcohol alkyl ether having a hydroxyl value of 200 to 450.

  The compounding amount of Component C is 0.1 to 100% by mass, preferably 1 to 70% by mass, more preferably 5 to 70% by mass, based on the compounding amount of Component D.

As the above-mentioned polyhydric alcohol fatty acid ester having a hydroxyl value of 100 to 500 (excluding component D) and 100 to 500 polyhydric alcohol alkyl ether, commercially available ones can be used, such as glycerin fatty acid ester and sorbitan fatty acid ester. , Diglycerin fatty acid ester (excluding component D), polyglycerin fatty acid ester having an average polymerization degree of 3 to 10 (excluding component D), sucrose fatty acid ester, alkyl glucoside, alkyl glyceryl ether and the like.
In particular, in order to improve the temporal stability of the self-emulsifying oily solid cosmetic, 50 to 100% by mass of the total constituent fatty acids among the polyhydric alcohol fatty acid esters having a hydroxyl value of 100 to 500 (excluding Component D) Glycerin fatty acid ester which is a linear saturated fatty acid having 16 to 22 carbon atoms, diglycerin fatty acid ester (excluding component D) in which 50 to 100% by mass of all the constituent fatty acids is a linear saturated fatty acid having 16 to 22 carbon atoms, all 50 to 100% by mass of the constituent fatty acid is a linear saturated fatty acid having 16 to 22 carbon atoms, and polyglycerol fatty acid ester (excluding component D) having an average polymerization degree of 3 to 10 polyglycerol, 50 to 50% of all constituent fatty acids. A sucrose fatty acid ester having 100% by mass of a linear saturated fatty acid having 16 to 22 carbon atoms and a saponification value of 130 or more is preferred.
Specific examples thereof include glycerin fatty acid esters (excluding component D), diglycerin stearic acid esters (excluding component D), polyglyceryl distearic acid esters, sucrose stearic acid esters, and the like. Acid esters are preferred.

  Further, in order to further improve the storage stability of the self-emulsifying oily solid cosmetic, the hydroxyl value is less than 100, and 50 to 100% by mass of all the constituent fatty acids is a linear saturated fatty acid having 16 to 22 carbon atoms. In addition, a sucrose fatty acid ester (hereinafter also referred to as “component F”) having a saponification value of 130 or more can be blended. Component F includes sucrose acetate stearate and sucrose polystearate, with sucrose polystearate being particularly preferred.

  Self-emulsifying type of sucrose fatty acid ester (component F) having a hydroxyl value of less than 100, 50 to 100% by mass of all the constituent fatty acids being a linear saturated fatty acid having 16 to 22 carbon atoms and a saponification value of 130 or more The blending amount in the oily solid cosmetic is preferably 0 to 10% by mass, more preferably 0.1 to 10% by mass, particularly preferably 1 to 10% by mass, and most preferably 2 to 10% by mass.

  In addition, the powder component, water, oil / polyhydric alcohol type discrimination, continuous phase discrimination, polyhydric alcohols, other optional components, and the like can be applied in the same manner as in the case of the first invention.

Both the self-emulsifying type oily solid cosmetics of the first invention and the second invention are solid, and the surfactant is molecularly dissolved or micelle-dissolved in the oily component, or the surfactant is liquid crystal in the oily component. It is dissolved in the state. That is, in the self-emulsifying oily solid cosmetic of the present invention, water and polyhydric alcohol are not a continuous phase, and oil is a continuous phase.
Non-aqueous makeup obtained by adding an oil phase to a mixture of an aqueous component such as an aqueous polyhydric alcohol and a surfactant introduced in JP-A-9-208444, JP-A-11-152205, etc. Since the continuous phase is based on polyhydric alcohol, the material is different from the self-emulsifying oily solid cosmetic of the present invention.
And since the self-emulsifying type oily solid cosmetic of the present invention is solid, it can be molded into products freely, for example, manufacture and sell bath preparations in the form of animals, fruits, characters, etc. Thus, not only the effect and efficacy of the bath preparation but also a sense of play can be provided to the consumer.

  In the production method of the self-emulsifying cosmetic of the present invention, in either case of the first invention or the second invention, each component is usually heated to 40 to 90 ° C. and mixed and dissolved. Even when components other than the polyglycerin fatty acid ester, the oil component, the polyhydric alcohol fatty acid ester and the like used in the present invention are blended, the procedure for mixing and dissolving is not particularly limited. For example, polyglycerin fatty acid ester and oily component used in the present invention, polyhydric alcohol fatty acid ester having a hydroxyl value of 100 to 500, lecithin, etc. are mixed at the same time, or polyglycerin fatty acid essential in the present invention. After the ester and the polyhydric alcohol fatty acid ester having a hydroxyl value of 100 to 500, lecithin and the like are mixed and dissolved, the oily component used in the present invention may be mixed and dissolved. The same applies when other components are blended. Stirring may be a known method, and the apparatus such as a blade-type stirrer, a disper, or a homomixer is not particularly limited.

Specific examples of the self-emulsifying oily solid cosmetic of the present invention include solid cleansing cosmetics and solid bath cosmetics.
The solid cleansing cosmetic composition of the present invention has no safety concerns, is excellent in water dispersibility and storage stability, is well removed, and does not feel sticky or squeaky after washing. It has the effect that there is no slimy feeling and rinsing is easy.
In addition, the solid bath cosmetic of the present invention has no safety concerns, good dispersibility in bath water, excellent storage stability, and has a moist feeling.

(Example)
EXAMPLES Hereinafter, although an Example demonstrates this invention further in detail, this invention is not limited to these.

[Examples 1 to 4 and Comparative Examples 1 to 3] Self-emulsifying oily cosmetic material [Raw material of polyglycerin fatty acid ester used in self-emulsifying oily cosmetic material]
The polyglycerin of the analysis example 1 shown in Table 1 was used for the polyglycerin which is a raw material of polyglycerin fatty acid ester.
Table 1 shows three specific polyglycerols for production of polyglycerol fatty acid esters used in Examples (Great Oil D-10, Great Oil D-11, Great Oil D-12 manufactured by Taiyo Kagaku Co., Ltd.), and comparison Gas chromatographic method of 4 types of polyglycerols for production of polyglycerol fatty acid esters used in the examples (Great Oil S-10, Great Oil S-11, Great Oil S-12, Great Oil S-13 manufactured by Taiyo Kagaku Co., Ltd.) The result of the polyglycerin composition analysis measured by is shown.
Each composition analysis value was calculated by the area percentage method. Moreover, when a dimer or a trimer cyclic | annular thing is included in polyglycerin, the polyglycerin composition analysis value of a dimer and a trimer shows the value which match | combined the non-cyclic thing and the cyclic | annular thing, respectively.
In addition, Table 2 shows the trade names of polyglycerin (all manufactured by Taiyo Kagaku Co., Ltd.) of Analysis Examples 1 to 3 and Analysis Comparative Examples 1 to 4.

  The fatty acid which is a raw material of the polyglycerin fatty acid ester used mixed fatty acids 1 to 7 obtained by mixing five kinds of fatty acids 1 to 5 having the fatty acid composition shown in Table 3 at a ratio shown in Table 4.

[Production of polyglycerin fatty acid ester used in self-emulsifying oily cosmetics]
A method for producing a polyglycerol fatty acid ester using the Great Oil D-10 (raw material polyglycerol of Analysis Example 1) and the mixed fatty acid shown in Table 4 as raw materials is shown below.
A 500 ml four-necked flask equipped with a stirrer, thermometer, gas blowing tube and water separator was charged with 220 g of polyglycerin, 80 g of mixed fatty acid 1 and 0.1 g of tripotassium phosphate, and the nitrogen gas stream. In the inside, it heated at 200-250 degreeC and performed esterification reaction. After the reaction, 0.3 ml of phosphoric acid was added to obtain 230 g of a polyglycerol stearic acid ester used in Example 1 having a hydroxyl value of 600.
The polyglycerin fatty acid ester used in Examples 2 to 4 and Comparative Examples 1 to 3 was produced in the same manner as in this production method, except that the mixed fatty acid was changed.

[Preparation of self-emulsifying oily cosmetics]
Using the seven types of polyglycerin fatty acid esters 1 to 7 shown in Table 5, self-emulsifying oily cosmetics (Examples 1 to 4 and Comparative Examples 1 to 3) were prepared with the formulation shown in Table 6.
First, all the raw materials of the compounding amounts shown in Table 6 were added to a 200 ml stainless beaker, heated to 70 to 80 ° C., dissolved by stirring, and then cooled to room temperature while stirring. The self-emulsifying oily cosmetics of Examples 1 to 3 were obtained.

[Self-emulsification type oily cosmetic shape and water dispersibility evaluation test]
(1) Shape evaluation method Shape evaluation was performed by visually observing the prepared self-emulsifying oily cosmetic at 20 ° C. As a result, the solid state was evaluated as ◯, and the liquid state was evaluated as ×.

(2) Dispersibility evaluation method in water 5 g of the prepared self-emulsifying oily cosmetic was dispersed in 50 ml of water in a beaker, stirred with a glass rod for 3 seconds, and the dispersion state was observed. Table 7 shows the evaluation criteria for dispersibility in water.

(3) Evaluation results of self-emulsifying oily cosmetics Each of the obtained self-emulsifying oily cosmetics was evaluated for shape and water dispersibility by the evaluation method described above. The results (Examples 1 to 4 and Comparative Examples 1 to 3) are shown in Table 8.

As can be seen from the evaluation results of Examples 1 to 4, a poly saturated fatty acid residue having 16 to 22 carbon atoms accounts for 50 to 100% by mass of the total constituent fatty acid residues of the polyglycerol fatty acid ester. The oily cosmetic containing glycerin fatty acid ester was a solid cosmetic because dispersibility in water was good and the shape was ○ (solid).
And as can be seen from the evaluation results of Comparative Examples 1 to 3, the proportion of linear saturated fatty acid residues having 16 to 22 carbon atoms out of all constituent fatty acid residues of the polyglycerol fatty acid ester is less than 50% by mass. In addition, there were those that did not become solid (Comparative Examples 1 and 2), and even those that were solid (Comparative Example 3) had a water dispersibility of Δ (self-emulsified). The white gel was floating).
Furthermore, as can be seen from the evaluation results of Comparative Example 3, among all the fatty acid residues of the polyglycerin fatty acid ester, 50 to 100% by mass is an oily compound blended with a polyglycerin fatty acid ester having a fatty acid residue of 23 or more carbon atoms. In the cosmetic, the shape was ○ (solid), but the dispersibility in water was Δ (self-emulsified, but a white gel-like substance was floating).

[Examples 5 to 17 and Comparative Examples 4 to 18] Cleansing cosmetics [raw materials of polyglycerol fatty acid esters used in cleansing cosmetics and bath cosmetics]
As the polyglycerin that is a raw material of the polyglycerin fatty acid ester, seven kinds of polyglycerin shown in Table 1 were used. The fatty acid which is a raw material of polyglycerin fatty acid ester used the commercial item.

[Method for producing polyglycerol fatty acid ester used in cleansing cosmetics]
A production method of polyglycerin fatty acid ester using Great Oil D-10 (raw material polyglycerin of Analysis Example 1) and commercially available stearic acid as raw materials is shown below.
In a 500 ml four-necked flask equipped with a stirrer, thermometer, gas blowing tube and water separator, 220 g of polyglycerin, 80 g of stearic acid and 0.1 g of tripotassium phosphate were placed, and these were put in a nitrogen gas stream. The mixture was heated to 200 to 250 ° C. to conduct esterification reaction. After the reaction, 0.3 ml of phosphoric acid was added to obtain 249 g of a polyglycerol stearate used in Example 5 having a hydroxyl value of 605.
Polyglycerin fatty acid esters used in Examples and Comparative Examples other than Example 5 were prepared by combining the seven types of polyglycerols shown in Table 1 with commercially available fatty acids in order to change the hydroxyl value of the resulting polyglycerol fatty acid esters. Manufactured in the same manner as described above, except that the blending amount was changed.
Tables 9 and 10 show polyglycerin fatty acid esters used for cosmetics for cleansing.

[Preparation of cleansing cosmetics]
Cleansing cosmetics (Examples 5 to 17 and Comparative Examples 4 to 18) were prepared using the 16 types of polyglycerin fatty acid esters shown in Tables 9 and 10 with the formulations shown in Tables 11 to 14.
Each component was added with the formulation shown in Tables 11 to 14, heated to 70 to 80 ° C., sufficiently stirred and dissolved, and then cooled to room temperature while stirring.
Moreover, the cleansing cosmetics which are not this invention using the polyglycerol fatty acid ester similar to Example 5 by the mixing | blending (polyglyceryl fatty acid ester used in Example 5 was used) shown in Table 15. That is, cleansing cosmetics that were not oily (Comparative Examples 16, 17, and 18 (all of which were blended with glycerin and 1,3-butylene glycol)) were prepared.

[Evaluation of cleansing cosmetics]
(1) Water Dispersibility Evaluation 5 g of the prepared cleansing cosmetic was dispersed in water (50 ml), stirred for 3 seconds, the state was observed, and evaluation was performed based on the evaluation criteria shown in Table 16.

(2) Sensory evaluation when using cleansing After applying each cleansing cosmetic to the place where the mascara of the waterproof was applied to 10 subjects, the 10 reciprocating application parts were massaged repeatedly left and right as if sliding lightly. . Thereafter, the operation of wetting the warm water accumulated in the palm of the hand so that it was applied to the application part was repeated 3 times for washing, and the moisture was absorbed by wiping the water with a towel.
When using cleansing cosmetics in this way, (a) a slimy feeling, (b) a rinsing feeling, (c) a feeling of dropping, (d) a sticky feeling after washing, and (e) a squeaky feeling after washing, respectively. Evaluation was performed based on the five-step evaluation criteria shown in the following Tables 17-21.

(3) Storage stability test The prepared cleansing cosmetic was stored for 6 months at 5 ° C, 25 ° C, and 40 ° C, and observed for oil separation or two-layer separation after storage. After storage, those that were stable were evaluated as ◯, and those that were oil-released or separated into two layers were evaluated as ×.

(4) Confirmation test of oily cosmetic In order to confirm that the prepared cleansing cosmetic is an oily cosmetic, the electrical conductivity and hexane solubility were examined by the following methods. Those having an electric conductivity of 0.1 μS / cm or less and dissolved in hexane were judged to be oily cosmetics.
(A) Electrical conductivity The electrical conductivity was measured using an Aswan Co., Ltd. Lacom conductivity meter ECScanPure +.
(B) Solubility in hexane As solubility in hexane, about 1 g of cleansing cosmetic was added to 10 ml of hexane solution with a spatula and stirred gently, and then it was observed whether the cleansing cosmetic was uniformly dissolved.

(5) Evaluation result of cleansing cosmetics The various evaluations described above were performed on the obtained cleansing cosmetics. The results are shown in Tables 11 to 14.
In Tables 11 to 14, Analysis Examples 1, 2, 3, and Analysis Comparative Examples 1, 2, 3, and 4 are the analysis examples 1, 2, 3, and Analysis Comparative Example 1, respectively. 2, 3, 4 are shown.

As can be seen from the results of Examples 5 to 17, the oil-based solid cleansing cosmetic blended with an oil component and a specific polyglycerin fatty acid ester has good dispersibility in water and a good feeling of omission, stickiness after washing, and creaking The feeling of use was good because there was no feeling, there was no slimy feeling when washing away, and rinsing was easy. Moreover, the storage stability was good at 5 ° C, 25 ° C and 40 ° C.
On the other hand, in the cleansing cosmetics of Comparative Examples 4 to 18, the object of the present invention could not be achieved, and the oily solid cleansing cosmetics were not good.
Moreover, it was confirmed that the oily cleansing cosmetic composition of the present invention was very well-familiar with the cosmetic composition and was an excellent cosmetic composition.
And all the cleansing cosmetics of Examples 5 to 17 and Comparative Examples 4 to 15 have an electric conductivity at 25 ° C. of 0.1 μS / cm or less and are uniformly dissolved in hexane, and therefore are oily. Was recognized. Moreover, the cleansing cosmetic of Comparative Example 16 was an oil-in-water cream, and the cleansing cosmetic of Comparative Example 17 was an aqueous polyhydric alcohol continuous phase gel and was not oily. Since Comparative Example 18 was separated immediately after preparation, the electrical conductivity and hexane solubility could not be evaluated.

[Example 18] Cleansing cosmetics Each component was added in the formulation shown in Table 22, heated to 70 to 80 ° C., sufficiently stirred and dissolved, and then cooled to room temperature with stirring, thereby self-emulsifying. An oily solid cleansing cosmetic was prepared.

 Based on the evaluation criteria described above, 20 expert panelists conducted sensory evaluation when using the oily solid cleansing cosmetic of the present invention of Example 18, and as a result, the dispersibility in water was ◎ (promptly Self-emulsified and uniformly dispersed) ◎ (no sliminess, very easy to rinse), very clean, no stickiness, no creaking The storage stability was also ◯ (stable) at all temperatures. Further, the obtained cleansing cosmetic had an electric conductivity at 25 ° C. of 0.1 μS / cm or less and was uniformly dissolved in hexane, so that it was confirmed to be oily.

[Comparative Example 19] Cleansing Cosmetics An oily solid cleansing cosmetic composition having the same composition as in Example 5 except that polyethylene glycol (PEG average polymerization degree: 15) stearic acid ester was used instead of polyglycerin stearic acid ester. Prepared.
As a result of 20 sensory evaluations of the obtained cleansing cosmetics based on the evaluation criteria described above, 20 expert panelists showed a dispersibility in water of Δ (self-emulsified but white gel The floating condition was ◎ (it fell off very cleanly), and the rest of the feeling of use was □ (feels slimy, hard to rinse, sticky, squeaky).

[Examples 19 to 31, Comparative Examples 20 to 31] Bath cosmetics [Preparation of bath cosmetics]
The bath cosmetics prepared by the same method as the cleansing cosmetics of Examples 5 to 17 and Comparative Examples 4 to 15 were used as Examples 19 to 31 and Comparative Examples 20 to 31, respectively.
[Evaluation of bath cosmetics]
(1) Dispersibility in bath water The prepared bath agent (20 ml) is dispersed in 40 ° C. bath water (200 l), stirred with bare hands for 3 seconds, the state is observed, and based on the evaluation criteria in Table 23 And evaluated.

(2) Feeling of use Ten subjects were bathed for 5 minutes, and the moist feeling after bathing and the sticky feeling were evaluated based on the evaluation criteria of Table 24 and Table 25.

(3) Storage stability test The prepared bath cosmetic was stored at 5 ° C, 25 ° C, and 40 ° C for 6 months, and observed for oil separation or two-layer separation after storage. After storage, those that were stable were evaluated as ◯, and those that were oil-released or separated into two layers were evaluated as ×.
[Evaluation results of bath cosmetics]
The evaluation results of the prepared bath cosmetic are shown in Table 26 and Table 27.
As can be seen from the results of Examples 19 to 31, the bath preparation containing the oil component and the specific polyglycerin fatty acid ester has good dispersibility in hot water, excellent storage stability, and a feeling of moist feeling. Was also excellent. Further, the obtained bath cosmetic had an electric conductivity at 25 ° C. of 0.1 μS / cm or less and was uniformly dissolved in hexane, so that it was confirmed to be oily.
On the other hand, as can be seen from the results of Comparative Examples 20 to 31, when the polyglycerin fatty acid ester was blended, the obtained bath cosmetic was oily, but dispersibility in hot water, storage stability, and feeling of use were improved. It was bad as a bath preparation.

[Example 32] Bath cosmetics Each component was added in the formulation shown in Table 28, heated to 70 to 80 ° C, sufficiently stirred and dissolved, and then cooled to room temperature with stirring, whereby bath cosmetics were prepared. Was prepared.

  As a result of performing sensory evaluation when 20 professional panelists used the bath preparation of Example 32 based on the evaluation criteria described above, dispersibility in bath water ◎ (Rapid self-emulsification and uniform dispersion ), Moist feeling ◎ (feels very moist), sticky feeling ◎ (no sticky feeling). The storage stability was also ◯ (stable) at all temperatures. Further, the obtained bath cosmetic had an electric conductivity at 25 ° C. of 0.1 μS / cm or less and was uniformly dissolved in hexane, so that it was confirmed to be oily.

The self-emulsifying oily solid cosmetic of the present invention can be widely used in the chemical industry and the pharmaceutical industry.

Claims (14)

A self-emulsifying oily solid cosmetic comprising 8-30% by mass of the following component A and 30-92% by mass of component B.
Component A: Polyglycerin fatty acid ester having a hydroxyl value of 450 to 700 and 50 to 100% by mass of all constituent fatty acid residues being a linear saturated fatty acid residue having 16 to 22 carbon atoms, In the polyglycerol which comprises, the total composition ratio of the diglycerol and the trimer polyglycerin cyclic product is 0 to 3% in the total polyglycerol, and the total composition ratio of the polyglycerol of 11-mer or more is in the total polyglycerol. The polyglycerol fatty acid ester in which each composition ratio of 10 to 30% and 4 to 10-mer polyglycerol is 4 to 20% in the total polyglycerol.
Component B: Oily component.   2. The self-emulsifying oily solid cosmetic according to claim 1, wherein the amount of component B is 30 to 91% by mass.   The self-emulsifying oily solid cosmetic according to claim 1 or 2, wherein the linear saturated fatty acid residue having 16 to 22 carbon atoms is a stearic acid residue or a behenic acid residue.   The self-emulsifying oily solid cosmetic according to any one of claims 1 to 3, wherein the amount of water is 0 to 2% by mass.   The self-emulsifying oily solid cosmetic according to any one of claims 1 to 4, wherein water is not blended.   The self-emulsifying oily solid cosmetic according to any one of claims 1 to 5, which has an electric conductivity at 25 ° C of 0.1 µS / cm or less and dissolves in a hydrocarbon solvent. .    The self-emulsifying oily solid cosmetic composition according to any one of claims 1 to 6, wherein the self-emulsifying oily solid cosmetic composition is a cleansing cosmetic.   The self-emulsifying oily solid cosmetic composition according to any one of claims 1 to 6, wherein the self-emulsifying oily solid cosmetic composition is a bath cosmetic. The compounding amount of the following component D is 8-30 mass%, the compounding amount of component B is 30-91 mass%, and the compounding amount of component C is 0.1-100 mass% of the compounding amount of component D Self-emulsifying oily solid cosmetic characterized by
Component D: Polyglycerin fatty acid ester having a hydroxyl value of 550 to 700 and 50 to 100% by mass of all constituent fatty acid residues being a linear saturated fatty acid residue having 16 to 22 carbon atoms, In the polyglycerol which comprises, the total composition ratio of the diglycerol and the trimer polyglycerin cyclic product is 0 to 3% in the total polyglycerol, and the total composition ratio of the polyglycerol of 11-mer or more is in the total polyglycerol. The polyglycerol fatty acid ester in which each composition ratio of 10 to 30% and 4 to 10-mer polyglycerol is 4 to 20% in the total polyglycerol.
Component B: Oily component.
Component C: a polyhydric alcohol fatty acid ester having a hydroxyl value of 100 to 500 (excluding component D) and / or a polyhydric alcohol alkyl ether having a hydroxyl value of 100 to 500.   10. The self-emulsifying oily solid cosmetic according to claim 9, wherein the amount of water is 0 to 2% by mass.   The self-emulsifying oily solid cosmetic according to claim 9 or 10, wherein water is not blended.   The self-emulsifying type oily solid cosmetic according to any one of claims 9 to 11, which has an electric conductivity at 25 ° C of 0.1 µS / cm or less and dissolves in a hydrocarbon solvent. .   The self-emulsifying oily solid cosmetic composition according to any one of claims 9 to 12, wherein the self-emulsifying oily solid cosmetic composition is a cleansing cosmetic. The self-emulsifying oily solid cosmetic composition according to any one of claims 9 to 12, wherein the self-emulsifying oily solid cosmetic composition is a bath cosmetic.