Cleansing cosmetics

Abstract

To provide a cleansing cosmetic that offers excellent cleansing power and a thick texture when applied to the skin, and can be easily washed off with cold water. [Solution] A cleansing cosmetic comprising (A) 20-50% by mass of polyoxyethylene glycerin fatty acid ester having 8-22 carbon atoms in the fatty acid and an HLB value of 7-13, (B) 5-25% by mass of an oil, (C) 0.1-1.5% by mass of a glycerin fatty acid ester eicosanedioic acid condensate, and (D) 15-40% by mass of water.

Description

[Technical Field]

[0001] This invention relates to a cleansing cosmetic. [Background technology]

[0002] Cleansing cosmetics are items used daily to remove makeup and sunscreen, but in recent years, with the emergence of many waterproof and long-lasting makeup and sunscreen products, there is a growing demand for cleansing cosmetics with high cleansing power. For example, Patent Document 1 describes a cleansing cosmetic containing a nonionic surfactant, a monoalkyl phosphate salt, a higher alcohol, and one or two selected from dicaprylyl carbonate and dicaprylyl ether, which exhibits excellent cleansing power.

[0003] When rubbing the skin vigorously to remove makeup and other cosmetics, friction puts a strain on the skin. Therefore, in addition to high cleansing power, cleansing cosmetics have been required to provide a feeling of thickness when applied. For example, Patent Document 2 describes a liquid oil-based cleansing cosmetic containing a nonionic surfactant having a polyoxyethylene chain, a dextrin fatty acid ester, and an ester oil having an isostearyl skeleton, which provides excellent thickness when used.

[0004] Furthermore, there are times when you want to rinse off cleansing cosmetics with cold water during the hot summer months, or in winter. However, cleansing cosmetics and cold water don't mix well, and often a sticky feeling remains after rinsing with cold water. Until now, a cleansing cosmetic that can be easily rinsed off with cold water had not been developed.

[0005] Therefore, there is a need for the development of a cleansing cosmetic that excels in cleansing power and provides a thick, smooth feel when applied to the skin, and can be easily washed off with cold water. [Prior art documents] [Patent Documents]

[0006] [Patent Document 1] Japanese Patent Publication No. 2023-45485 [Patent Document 2] Japanese Patent Publication No. 2016-185932 [Overview of the initiative] [Problems that the invention aims to solve]

[0007] The problem that this invention aims to solve is to provide a cleansing cosmetic that has excellent cleansing power and a thick texture when applied to the skin, and can be easily washed off with cold water. [Means for solving the problem]

[0008] As a result of diligent research by the inventors, we have found that the following cleansing cosmetic composition can solve the above problem. Based on this finding, the present invention is as follows.

[0009] [1] (A) 20-50% by mass of polyoxyethylene glycerol fatty acid ester having 8-22 carbon atoms in the fatty acid and an HLB value of 7-13, (B) Oils in 5-25% by mass, (C) 0.1 to 1.5% by mass of glycerin fatty acid ester eicosanedioic acid condensate, and (D) Water 15-40% by mass Cleansing cosmetics containing this ingredient.

[0010] [2] (E) Formula (1): RO-(PO) a -[(PO) b (EO) c ]-H ··· (1) (In the formula, R represents a linear or branched alkyl group having 1 to 30 carbon atoms. PO indicates an oxypropylene group. EO represents an oxyethylene group, a and b each represent the average number of moles of oxypropylene groups added, c represents the average number of moles of oxyethylene groups added, 1 ≦ a ≦ 40, 1 ≦ b ≦ 40, 1 ≦ c ≦ 80, (a + b + c) ≧ 20, and 0.1 ≦ (b + c) / (a + b + c) < 1, and [(PO) b / (EO) c represents a polyoxyalkylene group formed by randomly bonding the oxypropylene group PO and the oxyethylene group EO. ) The cleansing cosmetic according to [1] above contains 0.1 to 5% by mass of an alkylene oxide derivative represented by

Advantages of the Invention

[0011] The cleansing cosmetic of the present invention is excellent in cleansing power and the feeling of thickness when applied to the skin, and can be easily washed off when using cold water.

Modes for Carrying Out the Invention

[0012] Hereinafter, embodiments of the present invention will be described. Various modifications can be made without departing from the gist of the present invention.

[0013] In this specification, a numerical range defined using "~" includes the numerical values at both ends (upper limit and lower limit) of "~". For example, "2~4" represents 2 or more and 4 or less.

[0014] The content of each component in this specification is the content with respect to the entire cleansing cosmetic of the present invention. Also, when there are multiple substances corresponding to each component in the cleansing cosmetic of the present invention, the content of each component in this specification is the total content of the corresponding multiple substances.

[0015] The cleansing cosmetic of the present invention ​(A) Polyoxyethylene glycerol fatty acid ester (sometimes abbreviated as "component (A)" in this specification) having 8 to 22 carbon atoms in the fatty acid and an HLB value of 7 to 13, in an amount of 20 to 50% by mass, (B) Oil (which may be abbreviated as "component (B)" in this specification) in an amount of 5 to 25% by mass, (C) Glycerin fatty acid ester eicosanedioic acid condensate (sometimes abbreviated as "component (C)" in this specification) in an amount of 0.1 to 1.5% by mass, and (D) Water (sometimes abbreviated as "component (D)" in this specification) in an amount of 15-40% by mass It contains the following. The individual components are described below.

[0016] [(A) component] The component (A) used in the present invention is a polyoxyethylene glycerol fatty acid ester having 8 to 22 carbon atoms in the fatty acid and an HLB value of 7 to 13. Component (A) may be used alone or in combination of two or more. Component (A) may be a commercially available product or a compound produced by a known method. Component (A) is preferably a nonionic surfactant.

[0017] In this specification, "polyoxyethylene glycerol fatty acid ester" means an ester having an acyl group derived from a fatty acid, a polyoxyethylene chain, and a glycerol skeleton.

[0018] In this specification, "polyoxyethylene glycerol fatty acid ester having 8 to 22 carbon atoms in the fatty acid" means a polyoxyethylene glycerol fatty acid ester in which the acyl group derived from the fatty acid has 8 to 22 carbon atoms. The number of carbon atoms in the fatty acid is preferably 8 to 18. This acyl group may be derived from a mixed fatty acid such as coconut oil fatty acid. Since coconut oil fatty acid is a mixture of fatty acids with 8 to 18 carbon atoms, a polyoxyethylene glycerol fatty acid ester having an acyl group derived from coconut oil fatty acid (e.g., PEG-7 glyceryl coconut oil fatty acid) is classified in this specification as a polyoxyethylene glycerol fatty acid ester having 8 to 18 carbon atoms in the fatty acid.

[0019] The HLB values ​​used herein are calculated using the Oda method. The HLB values ​​are 7 to 13, preferably 8 to 12, and more preferably 9 to 11, from the viewpoint of cleansing power.

[0020] (A) Examples of components include the following: POE monoisostearate glyceryl (8E.O.) (=PEG-8 glyceryl isostearate) (HLB=9.5), POE monoisostearate glyceryl (10E.O.) (=PEG-10 glyceryl isostearate) (HLB=10.4), POE monoisostearate glyceryl (15E.O.) (=PEG-15 glyceryl isostearate) (HLB=12.1), POE(7) Coconut Oil Fatty Acid Glyceryl (= PEG-7 Coconut Oil Fatty Acid Glyceryl) (HLB=10.7) POE Glyceryl Triisostearate (20E.O.) (=PEG-20 Glyceryl Triisostearate) (HLB=7.9) POE Glyceryl Triisostearate (30E.O.) (=PEG-30 Glyceryl Triisostearate) (HLB=9.8).

[0021] (A) Component is preferably at least one selected from the group consisting of PEG-8 glyceryl isostearate and PEG-7 glyceryl cocoate, and more preferably PEG-8 glyceryl isostearate or PEG-7 glyceryl cocoate, from the viewpoint of cleansing power.

[0022] If the amount of component (A) is too low, the cleansing power of the cleansing cosmetic will be insufficient, and if the amount is too high, the cleansing cosmetic will not rinse off easily when using cold water. Therefore, the amount of component (A) relative to the total cleansing cosmetic is 20 to 50% by mass, preferably 25 to 45% by mass, and more preferably 30 to 40% by mass, from the viewpoint of cleansing power and ease of rinsing off when using cold water.

[0023] [(B) Component] The component (B) used in this invention is an oil. Component (B) may be used alone or in combination of two or more. From the viewpoint of cleansing power, it is preferable to use two or more components (B), and more preferable to use two components (B). Component (B) may be a commercially available product or a compound produced by a known method.

[0024] In this specification, "oil" means an oil that is liquid at 25°C and is commonly used in cosmetics or pharmaceuticals. Examples of oils include ester oils, fats and oils, hydrocarbon oils, silicone oils, and the like.

[0025] Examples of acids that make up ester oils include fatty acids, polybasic acids, and hydroxy acids. Examples of alcohols that make up ester oils include lower alcohols, higher alcohols, and polyhydric alcohols. Examples of ester oils include cetyl ethylhexanoate, ethylhexyl palmitate, isopropyl myristate, isononyl isononanoate, pentaerythrityl tetraethylhexanoate, glyceryl triisostearate, and cetyl lactate. Among these, cetyl ethylhexanoate and isononyl isononanoate are preferred.

[0026] Examples of oils and fats include olive fruit oil, macadamia nut oil, and sunflower oil. Of these, olive fruit oil is preferred.

[0027] Examples of hydrocarbon oils include liquid paraffin, hydrogenated polyisobutene, and squalane. Of these, hydrogenated polyisobutene is preferred.

[0028] The silicone oil may be either a linear silicone oil or a cyclic silicone oil. Examples of linear silicone oils include dimethylpolysiloxane and methylphenylpolysiloxane. Examples of cyclic silicone oils include decamethylcyclopentasiloxane and dodecamethylcyclohexasiloxane.

[0029] In one embodiment of the present invention, component (B) is preferably at least one selected from the group consisting of ester oils, fats and oils, hydrocarbon oils, and silicone oils, more preferably at least one selected from the group consisting of ester oils, fats and oils, and hydrocarbon oils, and even more preferably an ester oil.

[0030] In one embodiment of the present invention, component (B) is preferably at least one selected from the group consisting of cetyl ethylhexanoate, isononyl isononanoate, olive fruit oil, and hydrogenated polyisobutene, more preferably at least one selected from the group consisting of cetyl ethylhexanoate and isononyl isononanoate, and particularly preferably cetyl ethylhexanoate and isononyl isononanoate. When component (B) is cetyl ethylhexanoate and isononyl isononanoate, the mass ratio of the cetyl ethylhexanoate content / isononyl isononanoate content is preferably 1 to 4, more preferably 1 to 3.

[0031] If the amount of component (B) is too low, the cleansing power of the cleansing cosmetic will be insufficient, and if the amount is too high, the cleansing cosmetic will not be easily rinsed off with cold water. Therefore, the amount of component (B) relative to the total cleansing cosmetic is 5 to 25% by mass, preferably 7.5 to 22.5% by mass, and more preferably 10 to 20% by mass, from the viewpoint of cleansing power and ease of rinsing off with cold water.

[0032] [(C) component] The component (C) used in this invention is a glycerin fatty acid ester eicosanedioic acid condensate. Component (C) may be used alone or in combination of two or more types. Component (C) may be a commercially available product or a compound produced by a known method.

[0033] In this specification, "glycerin fatty acid ester eicosanedioic acid condensate" means an oligomeric ester synthesized from a fatty acid, eicosanedioic acid, and glycerin or polyglycerin, and "polyglycerin" means a compound having a structure in which multiple glycerin molecules are polymerized (e.g., polyglycerin-10).

[0034] Examples of fatty acids constituting component (C) include linear or branched saturated or unsaturated fatty acids having 8 to 30 carbon atoms. The number of carbon atoms in the fatty acid is preferably 12 to 26, more preferably 14 to 24, and even more preferably 16 to 22. Examples of the fatty acid include lauric acid, myristic acid, palmitic acid, stearic acid, isostearic acid, behenic acid, 2-ethylhexanoic acid, and oleic acid. Among these, isostearic acid and behenic acid are preferred, and behenic acid is more preferred.

[0035] (C) Examples of components include (behenate / eicosanedioic acid) glyceryl, (behenate / eicosanedioic acid) polyglyceryl-10, (behenate / isostearate / eicosanedioic acid) glyceryl, (behenate / eicosanedioic acid) glyceryl, etc.

[0036] (C) Component is at least one selected from the group consisting of (behenate / eicosanedioic acid) glyceryl and (behenate / eicosanedioic acid) polyglyceryl-10, more preferably (behenate / eicosanedioic acid) glyceryl or (behenate / eicosanedioic acid) polyglyceryl-10, and even more preferably (behenate / eicosanedioic acid) glyceryl, from the viewpoint of the thickness when the cleansing cosmetic is applied.

[0037] If the content of component (C) is too low, the cleansing cosmetic will not feel thick enough when applied, and if the content is too high, the cleansing cosmetic will not rinse off easily when using cold water. Therefore, the content of component (C) relative to the total cleansing cosmetic is 0.1 to 1.5% by mass, preferably 0.2 to 1% by mass, and more preferably 0.2 to 0.8% by mass, from the viewpoint of the thickness when applied and ease of rinsing off when using cold water.

[0038] [(D) component] The component (D) used in this invention is water. The component (D) is not particularly limited as long as it is water that can be incorporated into cleansing cosmetics. For example, purified water, hot spring water, deep-sea water, etc., can be used as component (D).

[0039] If the amount of component (D) is too low, the cleansing cosmetic will not feel thick enough when applied, and if the amount is too high, the cleansing power of the cleansing cosmetic will not be sufficient. Therefore, the amount of component (D) relative to the total cleansing cosmetic is 15 to 40% by mass, preferably 17.5 to 35% by mass, and more preferably 20 to 30% by mass, from the viewpoint of thickness when applied and cleansing power.

[0040] [(D) content / (C) content by mass ratio] The mass ratio of the content of component (D) to the content of component (C) (which may be abbreviated as “(D) component / (C) component” in this specification) is preferably 15 to 100, more preferably 20 to 70, from the viewpoints of the thickness feeling when the cleansing cosmetic is applied and the ease of washing off the cleansing cosmetic when using cold water.

[0041] [(Component (E))] From the viewpoint of the cleansing power, the cleansing cosmetic of the present invention preferably contains (E) Formula (1): R-O-(PO) a -[(PO) b / (EO) c -H ··· (1) (In the formula, R represents a linear or branched alkyl group having 1 to 30 carbon atoms, PO represents an oxypropylene group, EO represents an oxyethylene group, a and b each represent the average number of added moles of the oxypropylene group, c represents the average number of added moles of the oxyethylene group, 1≦a≦40, 1≦b≦40, 1≦c≦80, (a + b + c)≧20, and 0.1≦(b + c) / (a + b + c)<1, and [(PO) b / (EO) c represents a polyoxyalkylene group in which the oxypropylene group PO and the oxyethylene group EO are randomly bonded.) The alkylene oxide derivative represented by (which may be abbreviated as “(E) component” in this specification) is contained in an amount of 0.1 to 5% by mass .

[0042] Only one kind of (E) component may be used, or two or more kinds may be used in combination. The (E) component may be a commercially available product or a compound produced by a known method.

[0043] In formula (1), R represents a linear or branched alkyl group having 1 to 30 carbon atoms. Component (E) is usually produced using a saturated alcohol, and R in formula (1) is derived from the saturated alcohol used in the production of component (E). The saturated alcohol is a linear or branched saturated alcohol having 1 to 30 carbon atoms.

[0044] In formula (1), the number of carbon atoms in R is preferably 1 to 20, more preferably 1 to 12, even more preferably 1 to 8, and particularly preferably 1 to 5, from the viewpoint of cleansing power. R is preferably a butyl group or a 2-decyltetradecyl group, and more preferably a butyl group.

[0045] The number of carbon atoms in the saturated alcohol used in the production of component (E) is preferably 1 to 20, more preferably 1 to 12, even more preferably 1 to 8, and particularly preferably 1 to 5. Examples of saturated alcohols include methanol, ethanol, propanol, butanol, hexanol, heptanol, octanol, isooctadecanol, 2-octyldecanol, and 2-decyltetradecanol. Among these, butanol and 2-decyltetradecanol are preferred, and butanol is more preferred.

[0046] In formula (1), PO represents an oxypropylene group, and EO represents an oxyethylene group. O-(PO) in equation (1) a The leftmost O and (PO) a This indicates that it is bonded to the propylene group inside. (PO) in equation (1) a -[(PO) b (EO) c ] is (PO) a The oxy group inside, and [(PO) a (EO) b This indicates that a propylene group or ethylene group is bonded to it. In equation (1) [(PO) b (EO) c ]-H is [(PO) b (EO)c This indicates that the oxy group in the middle is bonded to the H atom at the right end.

[0047] In formula (1), a and b represent the average number of moles of oxypropylene groups added, respectively, and c represents the average number of moles of oxyethylene groups added. a to c may all be decimals.

[0048] From the viewpoint of cleansing power and ease of rinsing with cold water, a is 1 to 40, preferably 5 to 30, and more preferably 5 to 20.

[0049] b is 1 to 40, preferably 5 to 30, and more preferably 10 to 25, from the viewpoint of cleansing power and ease of rinsing with cold water.

[0050] c is 1 to 80, preferably 10 to 60, more preferably 20 to 50, and even more preferably 20 to 40, from the viewpoint of cleansing power and ease of rinsing with cold water.

[0051] (a+b+c) is 20 or more, preferably 30 or more, more preferably 40 or more, and even more preferably 50 or more, from the viewpoint of cleansing power.

[0052] (b+c) / (a+b+c) is 0.1 or more and less than 1, preferably 0.3 to 0.97, more preferably 0.5 to 0.9, and even more preferably 0.6 to 0.9, from the viewpoint of cleansing power and thickness when applied to the skin.

[0053] Component (E) can be produced by known methods. For example, component (E) can be obtained by adding propylene oxide to a linear or branched saturated alcohol having 1 to 30 carbon atoms under an alkaline catalyst at 50 to 160°C and 0.5 MPa (gauge pressure) or less, followed by addition polymerization of a mixture of ethylene oxide and propylene oxide, neutralization with acid, and further removal of water and neutralization salts.

[0054] When using component (E), the amount of component (E) relative to the total cleansing cosmetic composition is 0.1 to 5% by mass, preferably 0.2 to 4% by mass, and more preferably 0.3 to 3% by mass, from the viewpoint of cleansing power.

[0055] [Other ingredients] The cleansing cosmetic composition of the present invention may contain other components different from the above-mentioned components (A) to (E), as long as they do not impair the effects of the present invention. Examples of other components include polyhydric alcohols (except for component (A)), sugars, polysaccharides, amino acids, surfactants, organic salts, inorganic salts, pH adjusters, chelating agents, antioxidants, bactericides, blood flow promoters, anti-inflammatory agents, UV absorbers, UV scattering agents, vitamins, scrubbing agents (e.g., medicinal charcoal, synthetic waxes, peach kernels, glucomannan), colorants, fragrances, etc. From the viewpoint of the thickness felt when applied, polyhydric alcohols (except for component (A)) are preferred as other components.

[0056] The polyhydric alcohol (excluding component (A)) is preferably at least one selected from the group consisting of propylene glycol, glycerin, and 1,3-butylene glycol. When using a polyhydric alcohol (excluding component (A)), the content of the polyhydric alcohol (excluding component (A)) relative to the total cleansing cosmetic composition is preferably 5 to 40% by mass, and more preferably 10 to 30% by mass, from the viewpoint of the thickness felt when applied. [Examples]

[0057] The present invention will be described in more detail below with reference to examples and comparative examples, but the present invention is not limited to the following examples.

[0058] [Examples 1-12 and Comparative Examples 1-4] Cleansing cosmetics for Examples 1-13 and Comparative Examples 1-4 were prepared by blending each component in the amounts shown in Tables 2-1 to 2-3. The composition of the "common components" listed in Tables 2-1 to 2-3 is shown in Table 3. Note that the content amounts listed in Tables 2-1 to 2-3 and Table 3 are the content relative to the total cleansing cosmetic. The following components were used for components (A) to (E). In addition, the medicinal charcoal listed in Table 3 was manufactured by Horie Seiyaku Co., Ltd.

[0059] <(A) component> (A-1) PEG-7 glyceryl coconut oil fatty acid ("Uniglyc MK-207" manufactured by NOF Corporation) (A-2) PEG-8 glyceryl isostearate (manufactured by NOF Corporation, "Uniox GM-8IS")

[0060] <(B) component> (B-1) Cetyl ethylhexanoate (BASF Japan Ltd. "Cetiol SN-1") (B-2) Isononyl isononanoate (manufactured by Nisshin Oillio Group Co., Ltd. as "Saracos 99") (B-3) Hydrogenated polyisobutene (NOF Co., Ltd. "Pearlream 4") (B-4) Olive fruit oil ("Olive Oil Refined" manufactured by MP Gokyo Food & Chemical Co., Ltd.)

[0061] <(C) component> (C-1) Glyceryl (Behenate / Eicosanedioate) (Manufactured by Nisshin Oillio Group Co., Ltd. as "Nomucoat HK-G") (C-2) (Behenate / Eicosanedioic Acid) Polyglyceryl-10 (Nissin Oillio Group Co., Ltd. "Nomucoat HK-P")

[0062] <(D) component> water

[0063] <(E) component> (E-1) Compound 1 shown in Table 1 (E-2) Compound 2 shown in Table 1

[0064] [Table 1]

[0065] [evaluation] The cleansing cosmetics of the examples and comparative examples were evaluated for (1) thickness upon application, (2) cleansing power, and (3) ease of rinsing with cold water. The results are shown in Tables 2-1 to 2-3. The total score obtained for each evaluation item is also indicated in parentheses in Tables 2-1 to 2-3.

[0066] (1) Thickness when applied Twenty women (ages 22-45) wearing makeup (Maybelline Mascara Waterproof Sky High 01 Black) were used as panelists. Each woman took 5g of each cleansing cosmetic product and applied it to her face. She scored the thickness of the cleansing cosmetic product according to the scoring criteria below. The total scores from the 20 women were calculated and evaluated according to the evaluation criteria below. <Scoring Criteria> 2 points: It has sufficient thickness when applied. 1 point: It feels thick when applied. 0 points: No feeling of thickness when applied. <Evaluation Criteria> ◎: Total score of 30 points or more ○: Total score of 20 points or more, but less than 30 points △: Total score is 10 points or more, but less than 20 points. ×: Total score is less than 10 points

[0067] (2) Cleansing power Twenty women (ages 22-45) wearing makeup (Maybelline Mascara Waterproof Sky High 01 Black) were used as panelists. Each panelist took 5g of each cleansing cosmetic, applied it to their face, and then rinsed off the makeup and cleansing cosmetic with 15°C cold water. The cleansing power of the cleansing cosmetic was then scored according to the scoring criteria below. The total scores from the 20 participants were calculated and evaluated according to the evaluation criteria below. <Scoring Criteria> 2 points: It has sufficient cleansing power. 1 point: Has good cleansing power. 0 points: No cleansing power <Evaluation Criteria> ◎: Total score of 30 points or more ○: Total score of 20 points or more, but less than 30 points △: Total score is 10 points or more, but less than 20 points. ×: Total score is less than 10 points

[0068] (3) Ease of rinsing when using cold water Twenty women (ages 22-45) wearing makeup (Maybelline Mascara Waterproof Sky High 01 Black) were used as panelists. They took 5g of each cleansing cosmetic, applied it to their faces, and scored how easily the cleansing cosmetic could be rinsed off with 15°C cold water according to the scoring criteria below. The total scores of the 20 participants were calculated and evaluated according to the evaluation criteria below. <Scoring Criteria> 2 points: Easily rinses off. 1 point: Easy to rinse off 0 points: Difficult to rinse off <Evaluation Criteria> ◎: Total score of 30 points or more ○: Total score of 20 points or more, but less than 30 points △: Total score is 10 points or more, but less than 20 points. ×: Total score is less than 10 points

[0069] [Table 2-1]

[0070] [Table 2-2]

[0071] [Table 2-3]

[0072] [Table 3]

[0073] As shown in Tables 2-1 and 2-2, the cleansing cosmetics of Examples 1 to 13 were excellent in terms of thickness when applied, cleansing power, and ease of rinsing with cold water.

[0074] In particular, the cleansing cosmetic of Example 1, wherein the content of each of components (A) to (D) is within the more preferable range described above, contains two types of component (B), contains component (E), and component (D) / (C) is within the more preferable range. The cleansing cosmetic of Example 4, wherein the content of each of components (A) to (D) is within the more preferable range described above, contains two types of component (B), and component (D) / (C) is within the more preferable range described above, and The cleansing cosmetic of Example 6, in which the content of each of components (A) to (D) is within the more preferable range described above, contains component (E), and the ratio of component (D) to component (C) is within the more preferable range described above, All evaluation items received a "◎" rating.

[0075] On the other hand, as shown in Table 2-3, the cleansing cosmetic of Comparative Example 1, which did not contain component (A), had insufficient cleansing power and ease of rinsing with cold water. The cleansing cosmetic of Comparative Example 2, which did not contain ingredient (C), had an insufficient thickness when applied. (D) The cleansing cosmetic of Comparative Example 3, which contained a low amount of ingredient, had insufficient thickness when applied and was not easily rinsed off with cold water. (D) The cleansing cosmetic of Comparative Example 4, which contained a high amount of ingredient, had insufficient thickness when applied and insufficient cleansing power. [Industrial applicability]

[0076] As described above, the present invention provides a cleansing cosmetic that has excellent cleansing power and a thick texture when applied to the skin, and can be easily washed off with cold water.

Claims

1. (A) 20 to 50% by mass of polyoxyethylene glycerol fatty acid ester having 8 to 22 carbon atoms in the fatty acid and an HLB value of 7 to 13, (B) Oils in an amount of 5 to 25% by mass, (C) 0.1 to 1.5% by mass of glycerin fatty acid ester eicosanedioic acid condensate, and (D) Water in 15-40% by mass Cleansing cosmetics containing this ingredient.

2. (E) Formula (1): -O-(2O) ａ -[ (PO) ｂ / (EO) ｃ ]-H ・・・ (1) (In the formula, R represents a linear or branched alkyl group having 1 to 30 carbon atoms. PO indicates an oxypropylene group. EO indicates an oxyethylene group. a and b represent the average number of moles of oxypropylene groups added, respectively. c represents the average number of moles of oxyethylene groups added. 1 ≤ a ≤ 40, 1 ≤ b ≤ 40, 1 ≤ c ≤ 80, (a + b + c) ≥ 20, and 0.1 ≤ (b + c) / (a ​​+ b + c) < 1, and [(PO) ｂ / (EO) ｃ ] represents a polyoxyalkylene group formed by randomly bonding the oxypropylene group PO and the oxyethylene group EO. 0.1 to 5% by mass of the alkylene oxide derivative represented by A cleansing cosmetic containing the contents of claim 1.

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