Liquid skin cleansing composition

Abstract

To provide a liquid skin cleansing composition which exhibits superior foam performance such as foam quality and foam retention, and also offers a superior sensation of hydration and non-tight feeling post-wash.SOLUTION: A liquid skin cleansing composition comprises: (A) a polyoxyethylene alkyl ether sulfate; (B) an amphoteric surfactant; (C) a nonionic surfactant; and (D) at least one selected from the group consisting of glucose and fructose.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to a liquid skin cleansing composition.

Background Art

[0002] Conventionally, liquid skin cleansing compositions such as body soaps and hand soaps have been required to have better foam performance (foam quality, foam retention, etc.).

[0003] As a means of improving the foam performance of a liquid skin cleansing composition, for example, for the purpose of making good the foaming property, the moisturizing property after washing, the smooth feeling of the skin after towel drying, and the feeling of improving the gloss of the skin, a skin cleansing composition containing a polyoxyethylene alkyl ether sulfate, an amphoteric surfactant, a cationic polymer, a fatty acid sorbitan ester, and a polyoxyethylene alkyl ether has been proposed (see, for example, Patent Document 1).

[0004] On the other hand, depending on the region and the like, the demands for liquid skin cleansing compositions are various, and the development of various liquid skin cleansing compositions that can meet such demands is also required. For example, in a low-viscosity liquid skin cleansing composition, it may be difficult to maintain the foam quality and the stability of the foam due to the increased drainage rate of the foam.

[0005] Therefore, a liquid skin cleansing composition that is excellent in foam performance such as foam quality and foam retention, and is excellent in the moisturizing feeling after washing and the lack of tightness of the skin, which are generally required performances of liquid skin cleansing compositions, has not yet been provided, and the prompt development thereof is strongly desired at present.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0007] One aspect of the present invention aims to provide a liquid skin cleansing composition that is excellent in foam properties such as foamy texture and sponginess, and also excellent in the moisturizing feeling after washing and the lack of tightness of the skin.

Means for Solving the Problems

[0008] The liquid skin cleansing composition according to one aspect of the present invention contains (A) polyoxyethylene alkyl ether sulfate, (B) amphoteric surfactant, (C) nonionic surfactant, and (D) at least one selected from the group consisting of glucose and fructose.

[0009] The means for solving the above problems are as follows. <1> (A) Polyoxyethylene alkyl ether sulfate, (B) Amphoteric surfactant, (C) Nonionic surfactant, (D) At least one selected from the group consisting of glucose and fructose, and is a liquid skin cleansing composition characterized by containing them. <2> The content of the component (A) is 6% by mass or more and 10% by mass or less based on the total amount of the liquid skin cleansing composition, The content of the component (B) is 1% by mass or more and 5% by mass or less based on the total amount of the liquid skin cleansing composition, The content of the component (C) is 1% by mass or more and 5% by mass or less based on the total amount of the liquid skin cleansing composition, The content of the component (D) is 0.2% by mass or more and 3% by mass or less based on the total amount of the liquid skin cleansing composition, and it is the liquid skin cleansing composition according to <1>. <3> The component (C) is polyoxyethylene olive oil ester in which the carbon chain length derived from fatty acid is 14 or more and 18 or less, and the average number of moles of ethylene oxide added is 4 or more and 8 or less, and it is the liquid skin cleansing composition according to <1> or <2>.

Advantages of the Invention

[0010] According to one aspect of the present invention, it is possible to provide a liquid skin cleansing composition that is excellent in foam performance such as foam quality and foaminess, and is excellent in moisturizing feeling after washing and lack of skin tightness feeling.

Embodiments for Carrying Out the Invention

[0011] (Liquid Skin Cleansing Composition) The liquid skin cleansing composition according to an embodiment of the present invention (hereinafter sometimes simply referred to as "this embodiment") contains (A) polyoxyethylene alkyl ether sulfate, (B) an amphoteric surfactant, (C) a nonionic surfactant, and (D) at least any one selected from the group consisting of glucose and fructose, and may contain other components as necessary.

[0012] In this specification, (A) polyoxyethylene alkyl ether sulfate may be referred to as "(A) component" or "(A)", (B) amphoteric surfactant may be referred to as "(B) component" or "(B)", (C) nonionic surfactant may be referred to as "(C) component" or "(C)", at least any one selected from the group consisting of (D) glucose and fructose may be referred to as "(D) component" or "(D)", and other components may be referred to as "others".

[0013] The liquid skin cleansing composition of this embodiment contains the above (A) component and (B) component, thereby enhancing the foaming property during washing and improving the foam quality. Further, by containing the above (C) component, the lack of skin tightness feeling after washing becomes good. The (C) component imparts sufficient foaminess even in a low-viscosity formulation and also improves the stratum corneum moisture content and skin barrier function. Further, by containing the above (D) component, the moisturizing feeling after washing becomes good, and the foaminess during washing due to water retention is also improved.

[0014] <(A) Polyoxyethylene Alkyl Ether Sulfate> The above-mentioned (A) polyoxyethylene alkyl ether sulfate mainly imparts good foam quality and a moisturizing feeling after washing to the liquid skin cleansing composition.

[0015] The above-mentioned component (A) is not particularly limited and can be appropriately selected according to the purpose. For example, compounds represented by the following general formula (1) can be mentioned. The component (A) may be used alone or in combination of two or more.

[0016] (Chemical formula 1) R 1 -O-(CH 2 -CH 2 O) n -SO 3 X ··· General formula (1)

[0017] In the above general formula (1), R 1 represents an alkyl group. From the viewpoint of improving foam quality and the moisturizing feeling after washing, the alkyl group is preferably a linear or branched alkyl group having 6 to 24 carbon atoms, and more preferably a linear or branched alkyl group having 10 to 16 carbon atoms.

[0018] In the above general formula (1), n represents the average number of added moles of the polyoxyethylene group. From the viewpoint of improving foam quality and the moisturizing feeling after washing, the average number of added moles of the polyoxyethylene group is preferably 1 to 6, and more preferably 1 to 3.

[0019] In the above general formula (1), X represents an alkali metal, ammonium, or organic ammonium. The alkali metal is not particularly limited and can be appropriately selected according to the purpose. For example, sodium, potassium, etc. can be mentioned. The organic ammonium is not particularly limited and can be appropriately selected according to the purpose. For example, organic ammonium derived from alkanolamines such as monoethanolamine, diethanolamine, and triethanolamine can be mentioned.

[0020] Among these, as the above X, an alkali metal is preferable, and sodium is more preferable.

[0021] Specific examples of the component (A) include sodium polyoxyethylene (1) lauryl ether sulfate, sodium polyoxyethylene (2) lauryl ether sulfate (alias: POE(2) lauryl sulfate sodium), sodium polyoxyethylene (3) lauryl ether sulfate (alias: POE(3) lauryl sulfate sodium), sodium polyoxyethylene (4) lauryl ether sulfate, sodium polyoxyethylene (5) lauryl ether sulfate, sodium polyoxyethylene (3) alkyl (C12,13) ether sulfate, ammonium polyoxyethylene (2) lauryl ether sulfate, and ammonium polyoxyethylene (3) lauryl ether sulfate. The numerical value in () represents the average added mole number (n) of the polyoxyethylene group.

[0022] As the component (A), those synthesized as appropriate may be used, or commercially available products may be used. Commercially available products of the component (A) include, for example, under the trade names Texapon N28AS 270N (manufactured by BASF), Emal 270J, Emal 20C (manufactured by Kao Corporation), Nissan Tracks, Persoft (manufactured by NOF Corporation), etc.

[0023] The content of the component (A) is not particularly limited and can be appropriately selected according to the purpose. However, from the viewpoints of good foam quality, foam retention, and moisturizing feeling after washing, it is preferably 3% by mass or more and 12% by mass or less, more preferably 6% by mass or more and 10% by mass or less, based on the total amount of the liquid skin cleansing composition.

[0024] When the content of the component (A) is 3% by mass or more based on the total amount of the liquid skin cleansing composition, the foam quality and foam retention of the liquid skin cleansing composition become good. When the content of the component (A) is 12% by mass or less based on the total amount of the liquid skin cleansing composition, the moisturizing feeling after washing becomes good.

[0025] <(B) Amphoteric surfactant> The (B) amphoteric surfactant mainly imparts good foam quality to the liquid skin cleansing composition.

[0026] There are no particular restrictions on the (B) component, and it can be appropriately selected according to the purpose. From the perspective of good foam quality, imidazoline type (amide amine type), amide amino acid salt, carbobetaine type (alkyl betaine, alkyl amide betaine), sulfobetaine type (alkyl sulfobetaine, alkyl hydroxy sulfobetaine), phosphobetaine type, amine oxide, and phosphonoxide are preferred. These may be used alone or in combination of two or more.

[0027] There are no particular restrictions on the imidazoline type amphoteric surfactant, and it can be appropriately selected according to the purpose. For example, sodium N-lauroyl-N'-carboxymethyl-N'-hydroxyethyl ethylenediamine, and sodium N-coconut fatty acid acyl-N'-carboxymethyl-N'-hydroxyethyl ethylenediamine, etc. can be mentioned.

[0028] There are no particular restrictions on the carbobetaine type amphoteric surfactant, and it can be appropriately selected according to the purpose. For example, alkyl betaine type amphoteric surfactants such as lauryldimethylaminoacetic acid betaine, coconut oil alkyl betaine, and stearyldimethylaminoacetic acid betaine, and alkyl amide betaine type amphoteric surfactants such as lauric acid amide propyl betaine, coconut oil fatty acid amide propyl betaine, and palm kernel oil fatty acid amide propyl betaine, etc. can be mentioned.

[0029] There are no particular restrictions on the sulfobetaine type amphoteric surfactant, and it can be appropriately selected according to the purpose. For example, lauryl hydroxy sulfobetaine, lauramide propyl hydroxy sultaine, and coconut oil fatty acid dimethylamino hydroxy sulfobetaine, etc. can be mentioned.

[0030] The phosphobetaine type amphoteric surfactant is not particularly limited and can be appropriately selected according to the purpose. For example, lauryl hydroxyphosphobetaine and the like can be mentioned.

[0031] The amine oxide is not particularly limited and can be appropriately selected according to the purpose. For example, acyl tertiary amine oxides such as lauryldimethylamine oxide can be mentioned.

[0032] The phosphine oxide is not particularly limited and can be appropriately selected according to the purpose. For example, acyl tertiary phosphine oxides such as lauryldimethylphosphine oxide can be mentioned.

[0033] Among these amphoteric surfactants, from the viewpoint of improving the foam quality of the liquid skin cleansing composition, lauryl hydroxysultaine (lauryl hydroxysulfobetaine), lauryldimethylaminoacetic acid betaine, and aminopropyl laurate betaine are more preferable.

[0034] As the component (B), those synthesized appropriately may be used, or commercially available products may be used. Examples of commercially available products of the component (B) include, for example, Amphitol 20HD (manufactured by Kao Corporation), Softazoline LSB (manufactured by Kawaken Fine Chemicals Co., Ltd.), Amphitol 24B (manufactured by Kao Corporation), Nissan Anon BL (manufactured by NOF Corporation), NIKKOL AM-301 (manufactured by Nikko Chemicals Co., Ltd.), Amogen S (manufactured by Daiichi Kogyo Seiyaku Co., Ltd.), Obazoline LB (manufactured by Toho Chemical Industry Co., Ltd.), Recabion A-100 (manufactured by Shin Nippon Rika Co., Ltd.), Amipol N (manufactured by Nichika Chemical Co., Ltd.), Bister ML (manufactured by Matsumoto Yushi Seiyaku Co., Ltd.), Amphitol 86B (manufactured by Kao Corporation), Recabion A-700 (manufactured by Shin Nippon Rika Co., Ltd.), and Nissan Anon BF (manufactured by NOF Corporation).

[0035] The content of the component (B) is not particularly limited and can be appropriately selected according to the purpose. From the viewpoint of good foam quality of the liquid skin cleansing composition, it is preferably 0.1% by mass or more and 30% by mass or less, more preferably 1% by mass or more and 5% by mass or less, based on the total amount of the liquid skin cleansing composition.

[0036] When the content of the component (B) is 0.1% by mass or more based on the total amount of the liquid skin cleansing composition, the foam quality of the liquid skin cleansing composition becomes good. When the content of the component (B) is 30% by mass or less based on the total amount of the liquid skin cleansing composition, the foam quality of the liquid skin cleansing composition becomes good.

[0037] <(C) Nonionic surfactant> The (C) nonionic surfactant mainly imparts good foaming, a moisturizing feeling after washing, and no tight feeling on the skin after washing to the liquid skin cleansing composition.

[0038] The component (C) is not particularly limited and can be appropriately selected according to the purpose. From the viewpoints of good foaming, a moisturizing feeling after washing, and no tight feeling on the skin after washing of the liquid skin cleansing composition, polyoxyethylene olive oil ester having a carbon chain length derived from fatty acid of 14 or more and 18 or less and an average addition mole number of ethylene oxide of 4 or more and 8 or less is preferable, and mono- or diethoxylated polyoxyethylene olive oil ester having a carbon chain length derived from fatty acid of 14 or more and 18 or less and an average addition mole number of ethylene oxide of 6 or more and 8 or less is more preferable.

[0039] As the component (C), those synthesized as appropriate may be used, or commercially available products may be used. Examples of commercially available products of the component (C) include, by trade name, Soavirol OV4 (olive oil PEG-4 ester, average number of moles of ethylene oxide added: 4, manufactured by Naturalis Life Technologies), Olivatis 21 (olive oil PEG-6 ester, average number of moles of ethylene oxide added: 6, manufactured by Medolla Speciality Chemicals), OLIVEM 300 (olive oil PEG-7 ester, average number of moles of ethylene oxide added: 7, manufactured by Alice Health and Nutrition Science Co., Ltd.), and Viatenza (registered trademark) Olive PE8 (olive oil PEG-8 ester, average number of moles of ethylene oxide added: 8, manufactured by Aldivia), etc.

[0040] The content of the component (C) is not particularly limited and can be appropriately selected according to the purpose. However, from the viewpoints of good foaming of the liquid skin cleansing composition, moisturizing feeling after washing, and lack of tight feeling of the skin after washing, it is preferably 0.5% by mass or more and 15% by mass or less, more preferably 1% by mass or more and 5% by mass or less, based on the total amount of the liquid skin cleansing composition.

[0041] When the content of the component (C) is 0.5% by mass or more based on the total amount of the liquid skin cleansing composition, good foaming of the liquid skin cleansing composition, moisturizing feeling after washing, and lack of tight feeling of the skin after washing are achieved. When the content of the component (C) is 15% by mass or less based on the total amount of the liquid skin cleansing composition, good foaming of the liquid skin cleansing composition is achieved.

[0042] <At least one selected from the group consisting of (D) glucose and fructose> At least one selected from the group consisting of the above (D) glucose and fructose mainly imparts good foaming and moisturizing feeling after washing to the liquid skin cleansing composition.

[0043] As the component (D), those synthesized as appropriate may be used, or commercially available products may be used. Examples of commercially available products of the component (D) include, for example, under the trade name, PENTAVITIN (isomerized sugar (glucose and fructose), manufactured by DSM Co., Ltd.).

[0044] The content of the component (D) is not particularly limited and can be appropriately selected according to the purpose. However, from the viewpoint of good foaming and moisturizing feeling after washing, it is preferably 0.1% by mass or more and 3.5% by mass or less, more preferably 0.2% by mass or more and 3.0% by mass or less, based on the total amount of the liquid skin cleanser composition.

[0045] When the content of the component (D) is 0.1% by mass or more based on the total amount of the liquid skin cleanser composition, good foaming and moisturizing feeling after washing are achieved. When the content of the component (D) is 3.5% by mass or less based on the total amount of the liquid skin cleanser composition, good foaming is achieved.

[0046] <Other components> In addition to the components (A) to (D), the liquid skin cleanser composition according to this embodiment can contain other components as necessary within a range that does not impair the effects of this embodiment.

[0047] The other components are not particularly limited and can be appropriately selected according to the purpose. For example, pH adjusters, antioxidants, sequestering agents, preservatives, bactericides, wetting agents, viscosity modifiers, feel-imparting agents, solubilizers, dispersants, emulsifiers, opacifying agents, pigments, dyes, fragrances, oils, animal and plant extracts or their derivatives, ultraviolet absorbers, inorganic powders, polymer water-insoluble powders, and medicinal components can be mentioned. These may be used alone or in combination of two or more.

[0048] For the other components, those synthesized as appropriate may be used, or commercially available products may be used.

[0049] The content of the other components in the liquid skin cleanser composition is not particularly limited and can be appropriately selected according to the purpose.

[0050] -pH- The pH of the liquid skin cleansing composition at 25°C is not particularly limited and can be appropriately selected according to the purpose. However, a pH of 3.0 or more and 6.5 or less is preferred.

[0051] The pH of the liquid skin cleansing composition can be measured using the method defined in the general test method of the Cosmetic Raw Material Standards (2nd Edition). Specifically, based on the general test method, the electrode of a pH meter can be inserted directly into the liquid skin cleansing composition, and the pH value after stabilization can be read for measurement.

[0052] -Manufacturing method- The manufacturing method of the liquid skin cleansing composition of this embodiment is not particularly limited and can be appropriately selected according to the purpose. For example, methods such as mixing and manufacturing the above-described respective components in predetermined amounts can be mentioned.

[0053] The liquid skin cleansing composition may be prepared using an apparatus. The apparatus is not particularly limited and can be appropriately selected according to the purpose. For example, a stirring device equipped with stirring blades that have shear force and can mix the whole can be mentioned. The stirring blades are not particularly limited and can be appropriately selected according to the purpose. For example, propellers, turbines, and dispercers can be mentioned.

[0054] -Uses- The liquid skin cleansing composition of this embodiment can be used, for example, in facial cleansers, hand soaps, body soaps, cleansing foams, and makeup removers.

Examples

[0055] Hereinafter, this embodiment will be described more specifically based on examples and comparative examples, but the present invention is not limited to these examples. Also, the content of each component described in the examples and comparative examples is shown in "mass%", and all are values converted to pure components.

[0056] (Examples 1 to 20 and Comparative Examples 1 to 4) Each component was blended in a predetermined amount so as to obtain the compositions and contents shown in Examples 1 to 20 and Comparative Examples 1 to 4 of Tables 1 to 5, and each liquid skin cleansing agent composition was prepared.

[0057] For each liquid skin cleansing agent composition, “foam quality”, “foam retention”, “moisturizing feeling after washing”, and “lack of tight feeling of skin after washing” were evaluated and judged. The results are shown in Tables 1 to 5 below.

[0058] <Evaluation of foam quality> 1 g of each liquid skin cleansing agent composition was weighed, diluted 20-fold with tap water, and then a foaming device was reciprocated 20 times to produce foam. The obtained foam was filled into a 50 mL beaker, and the foam viscosity was measured at room temperature under the conditions of rotor No. 3, 30 rpm, and 15 sec using a B-type viscometer. The number of samples was 3, and their average value was calculated and judged based on the following criteria. “◎” and “〇” were regarded as passing. -Criteria for judging foam quality- ◎: Foam viscosity exceeds 500 mPa·s 〇: Foam viscosity is 400 mPa·s or more and 500 mPa·s or less ×: Foam viscosity is less than 400 mPa·s

[0059] <Evaluation of foam retention> 1 g of each liquid skin cleansing agent composition was weighed, diluted 20-fold with tap water, and then a foaming device was reciprocated 20 times to produce foam. 5 g of the obtained foam was put into a 100 mL graduated cylinder, left standing for 1 minute, and then the drained liquid was weighed, and the drainage rate was calculated based on the following formula. The number of samples was 3, and their average value was calculated and judged based on the following criteria. “◎” and “〇” were regarded as passing. Drainage rate (%) = (mass of drained liquid / mass of foam) × 100 -Criteria for judging foam retention- ◎: Drainage rate is less than 25% 〇: Drainage rate is 25% or more and 50% or less ×: Drainage rate exceeds 50%

[0060] <Evaluation of moisturizing feeling after washing> Three professional panelists washed body parts excluding the head using each liquid skin cleanser composition. Regarding the moisturizing feeling after washing, evaluation was made based on the following evaluation criteria. The average rating of the three professional panelists was calculated and judgment was made based on the following judgment criteria. "◎" and "〇" were regarded as passing. - Evaluation Criteria for Moisturizing Feeling after Washing - Over 3 points: There is a very high moisturizing feeling. Over 2 points and below 3 points: There is a moisturizing feeling. Over 1 point and below 2 points: There is almost no moisturizing feeling. 1 point and below: There is no moisturizing feeling. - Judgment Criteria for Moisturizing Feeling after Washing - ◎: The average rating is over 3 points. 〇: The average rating is over 2 points and below 3 points. ×: The average rating is 2 points and below.

[0061] <Evaluation of Absence of Skin Tightness after Washing> Three professional panelists washed body parts excluding the head using each liquid skin cleanser composition. Regarding the absence of skin tightness after washing, evaluation was made based on the following evaluation criteria. The average rating of the three professional panelists was calculated and judgment was made based on the following judgment criteria. "◎" and "〇" were regarded as passing. - Evaluation Criteria for Absence of Skin Tightness after Washing - Over 3 points: There is no tightness. Over 2 points and below 3 points: There is almost no tightness. Over 1 point and below 2 points: There is a little tightness. 1 point and below: There is tightness. - Judgment Criteria for Absence of Skin Tightness after Washing - ◎: The average rating is over 3 points. 〇: The average rating is over 2 points and below 3 points. ×: The average rating is 2 points and below.

[0062]

Table 1

[0063]

Table 2

[0064]

Table 3

[0065]

Table 4

[0066]

Table 5

[0067] (Formulation Examples 1 to 4) Each component was blended in a predetermined amount so as to have the composition and content shown in Formulation Examples 1 to 4 of Table 6, and each liquid skin cleansing agent composition was prepared. Also, various evaluations were carried out in the same manner as in Example 1. The results are shown in Table 6.

[0068]

Table 6

[0069] Details of each component used in Examples 1 to 20, Comparative Examples 1 to 4, and Formulation Examples 1 to 4 are shown in Table 7 below.

[0070]

Table 7

Industrial Applicability

[0071] The liquid skin cleansing agent composition of this embodiment is excellent in foam performance such as foam quality and foam retention, and is excellent in the moisturizing feeling after washing and the lack of tightness of the skin. Therefore, for example, it can be used for hand soap, body soap, cleansing foam, makeup remover, etc.

Claims

1. (A) a polyoxyethylene alkyl ether sulfate; (B) an amphoteric surfactant; (C) a nonionic surfactant; (D) at least one selected from the group consisting of glucose and fructose.

2. The content of the component (A) is 6% by mass or more and 10% by mass or less based on the total amount of the liquid skin cleanser composition, The content of the component (B) is 1% by mass or more and 5% by mass or less based on the total amount of the liquid skin cleanser composition, The content of the component (C) is 1% by mass or more and 5% by mass or less based on the total amount of the liquid skin cleanser composition, 2. The liquid skin cleanser composition according to claim 1, wherein the content of the component (D) is 0.2% by mass or more and 3% by mass or less, based on the total amount of the liquid skin cleanser composition.

3. 3. The liquid skin cleansing composition according to claim 1 or 2, wherein the component (C) is a polyoxyethylene olive oil ester having a carbon chain length derived from a fatty acid of 14 or more and 18 or less and an average number of moles of ethylene oxide added of 4 or more and 8 or less.

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