Skin cleansing composition

Abstract

To provide a skin cleanser composition which has an excellent skin-moisturizing effect after towel dry, good foamability and foam quality, less irritation to the skin and a good wash-off property while having excellent cleansing performance for a cosmetic containing a large amount of an oil component such as a makeup.SOLUTION: There is provided a skin cleanser composition which comprises (A) a higher fatty acid salt of a fatty acid having 8 to 22 carbon atoms, (B) at least one or more cationic polymers selected from a dimethyldiallylammonium chloride polymer and a dimethyldiallylammonium chloride-acrylic acid copolymer and (C) at least one or more selected from a mono-fatty acid glyceryl ester, a monoalkyl glyceryl ether, a mono-fatty acid propylene glycol ester and a monoalkyl propylene glycol ether, which have an acyl group or an alkyl group having 8 to 12 carbon atoms and being linear.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to a skin cleansing composition, and more particularly, it has excellent cleansing performance against cosmetics containing a large amount of oil such as makeup, while being excellent in the moisturizing feeling of the skin after towel drying, having good foaming and foam quality, little irritation to the skin, and good rinsing property.

Background Art

[0002] In order to comfortably and pleasantly use a skin cleansing composition, higher fatty acid salts are often used as the main cleansing component. A skin cleansing composition using a higher fatty acid salt has good foaming and foam quality, so that the foam can serve as a cushion during washing and can gently wash up, can be rinsed off cleanly, and has advantages such as preventing reattachment of oily dirt with a large amount of foam. On the other hand, it is known that when oily residues such as sebum, skin dirt, makeup using pigments, sunscreen, and body paint accumulate on the skin, it can lead to skin damage such as rough skin. It is very important to impart cleansing performance to a skin cleansing composition using a higher fatty acid salt.

[0003] For skin cleansing compositions, polyhydric alcohols, nonionic surfactants, etc. have been blended in order to obtain excellent cleansing performance. However, with these methods, the moisturizing feeling tends to be impaired in exchange for obtaining excellent cleansing performance. Patent Document 1 describes a composition containing an amphoteric surfactant, an anionic surfactant, a monoglyceride fatty acid ester having an acyl group with 9 to 18 carbon atoms, and a polyhydric alcohol, which has excellent cleansing performance. However, there is a problem that the moisturizing feeling of the skin after towel drying is insufficient, and a feeling of dryness and tightness is easily felt. Generally, there is a trade-off relationship between cleansing performance and moisturizing feeling. When seeking cleansing performance, the degreasing power against sebum increases and leads to skin dryness, so it is very important to balance them.

[0004] In addition, for skin cleansing compositions, an oil agent has been blended to obtain excellent cleansing performance. However, with this method, foaming and foam quality tend to be impaired. Patent Documents 2 and 3 describe cleansing compositions mainly composed of higher fatty acid salts containing terpenes and having excellent detergency against oil stains, but the foaming and foam quality were insufficient. Hydrophobic components such as oil agents enhance the cleansing performance, but due to their defoaming effect, foaming and foam quality tend to be impaired. Therefore, achieving both is very important.

[0005] On the other hand, skin cleansing compositions mainly composed of higher fatty acid salts have a problem in that, due to their high degreasing power, a feeling of dryness and tightness is likely to be felt after washing. Therefore, sugar alcohols, water-soluble polymers, cationic polymers, etc. have been blended for the purpose of imparting a moisturizing feeling. Patent Document 4 discloses a cleansing composition combining a dimethylammonium chloride copolymer - acrylic acid - acrylamide and an algocolloid, and sodium hyaluronate. However, the components blended for the purpose of imparting a moisturizing feeling are water-soluble and are washed away with water during rinsing after washing. Therefore, it is difficult to improve the moisturizing feeling, and there is a problem that the moisturizing feeling is insufficient when towel-dried after rinsing.

[0006] In addition, for the purpose of improving the moisturizing feeling of a skin cleansing composition mainly composed of higher fatty acid salts, Patent Document 5 discloses a liquid skin cleansing composition containing, in addition to higher fatty acid salts, a specific cationic polymer, phenoxyethanol, and polyhydric alcohol and having excellent moisturizing properties. However, although phenoxyethanol is highly formulated for the purpose of improving the moisturizing feeling, high formulation of phenoxyethanol, which is generally used as a preservative, may cause irritation to the skin and eyes, etc., so there are concerns about safety. Furthermore, Patent Document 5 has an effect of improving the moisturizing feeling, but has no effect on improving the cleansing performance.

[0007] For the purpose of improving the moisturizing feeling of a cleaning composition mainly composed of a higher fatty acid salt, Patent Document 6 discloses a liquid skin cleaning composition that contains, in addition to the higher fatty acid salt, a specific cationic polymer, an amphoteric surfactant, and a monoglyceryl ether of a fatty acid having 16 to 18 carbon atoms in the alkyl group and has an excellent moisturizing feeling. However, the monoglyceryl ether of a fatty acid having 16 to 18 carbon atoms in the alkyl group has a problem in that it significantly deteriorates the foaming property and foam quality due to its high hydrophobicity.

[0008] For the above reasons, there is a demand for providing a skin cleaning composition that has excellent cleansing performance for cosmetics containing a large amount of oil such as makeup, has an excellent moisturizing feeling on the skin after towel drying, has good foaming property and foam quality, causes little irritation to the skin, and has good rinsing property.

Prior Art Documents

Patent Documents

[0009]

Patent Document 1

Patent Document 2

Patent Document 3

Patent Document 4

Patent Document 5

Patent Document 6

Summary of the Invention

Problems to be Solved by the Invention

[0010] The present invention has been made in view of the above prior art, and while having excellent cleansing performance for cosmetics containing a large amount of oil such as makeup, it is excellent in the moisturizing feeling of the skin after towel drying, has good foaming and foam quality, less irritation to the skin, and good rinsability. An object of the present invention is to provide a skin cleansing composition.

Means for Solving the Problems

[0011] In order to achieve the above problems, as a result of intensive research by the present inventor, it has been found that by blending components (A) to (C), a skin cleansing composition can obtain the above problems, and the present invention has been completed.

[0012] The first invention is (A) Higher fatty acid salts with 8 to 22 carbon atoms in the fatty acid (B) At least one kind of cationic polymer selected from dimethyldiallylammonium chloride polymer and dimethyldiallylammonium chloride - acrylic acid copolymer (C) At least one kind selected from monoglycerin esters of fatty acids, monoalkyl glyceryl ethers, monoglycerin esters of fatty acids with 8 to 12 carbon atoms in the acyl group or alkyl group and being linear, or monopropyl glycol esters of fatty acids or monopropyl glycol ethers of monoalkyls A skin cleansing composition characterized by containing the above components, and when the component (B) is selected as a dimethyldiallylammonium chloride - acrylic acid copolymer, the molar ratio of the structural unit derived from dimethyldiallylammonium chloride is 65 mol% or more in the dimethyldiallylammonium chloride - acrylic acid copolymer.

[0013] The second invention is a skin cleansing composition according to claim 1, further characterized by containing (D) an amphoteric surfactant.

[0014] The third invention is a skin cleansing composition according to claim 1 or 2, further characterized in that the content of (B) is 0.1% by mass to 3% by mass.

[0015] The fourth invention is a skin cleansing composition according to any one of claims 1 to 3, further having a content of (C) of 0.5% by mass to 15% by mass.

Advantages of the Invention

[0016] The skin cleansing composition of the present invention has excellent cleansing performance against cosmetics containing a large amount of oil such as makeup, is excellent in the moisturizing feeling of the skin after towel drying, has good foaming and foam quality, causes little irritation to the skin, and has good rinsing properties.

Best Mode for Carrying Out the Invention

[0017] Hereinafter, the present invention will be described in more detail. Unless otherwise noted, when the blending amount of a component is expressed as "%" below, it means mass%. Further, the following blending amounts indicate the pure components.

[0018] The present invention applies coacervation, which is a technique generally used to improve the usability (conditioning effect) of shampoos, to a cleansing agent for the skin. Coacervation is a phenomenon in which a complex of a cationic polymer and a surfactant is formed when the cationic polymer is diluted from a state solubilized by an anionic surfactant or an amphoteric surfactant and the surfactant concentration becomes low. Further, this complex is called a coacervate, and since the coacervate is insoluble in water, it easily remains on the hair or skin and can impart a moisturizing feeling and a smooth touch.

[0019] In the present invention, it has been found that by coexisting the components (A) to (C), the amount of coacervate formed when the skin cleansing composition is diluted with water increases as compared with the case of only the components (A) to (B). Although it has not been known to improve the cleansing effect of a detergent by coacervate until now, specifically, the effect of improving both the cleansing performance and the moisturizing feeling of the skin after towel drying, which are originally in a trade-off relationship, can be realized by the large amount of coacervate obtained from the components (A) to (C).

[0020] The higher fatty acid salt (A) used in the present invention can be one that is usually used in cosmetics and is formulated for good foaming, foam quality, and rinsability. The fatty acid is not particularly limited, and examples include caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, linoleic acid, coconut oil fatty acid, and the like. Further, as the counter base of the higher fatty acid salt, alkali metals such as sodium and potassium; alkaline earth metals such as calcium and magnesium; ammonium (NH4 + ); organic ammonium derived from alkanolamines such as monoethanolamine, diethanolamine, and triethanolamine; and basic amino acids such as L-arginine can be mentioned. Among these, sodium and potassium, which are alkali metals, are particularly preferred.

[0021] (A) The blending amount of the component is not particularly limited as long as the effects of the present invention can be obtained, but it is usually used in the range of 1 to 50% by mass, preferably 10 to 40% by mass, based on the total amount of the skin cleansing composition. In this range, the foaming property of the skin cleansing composition is very excellent.

[0022] (A) As the component, any one of these may be used alone or a mixture thereof may be used.

[0023] The cationic polymer (B) used in the present invention has the property of forming a complex with the higher fatty acid salt and forming a coacervate when diluted with water, and improves the moisturizing feeling by remaining on the skin after towel drying. It is at least one selected from a dimethyldiallylammonium chloride polymer and a dimethyldiallylammonium chloride-acrylic acid copolymer,

[0024] The dimethyldiallylammonium chloride-acrylic acid copolymer among the (B) components is represented by the following general formula (1).

Chemical formula

[0025] The molar ratio of the structural unit derived from dimethyldiallylammonium chloride in the dimethyldiallylammonium chloride-acrylic acid copolymer among the component (B) is 65 mol% or more, preferably 95 mol% or more, from the viewpoint of the moisturizing feeling of the skin after towel drying. If the molar ratio is less than 65 mol%, it becomes difficult to form a complex (coacervate) with the higher fatty acid salt, and the moisturizing feeling of the skin after towel drying may be insufficient.

[0026] The molar ratio of the structural units in the dimethyldiallylammonium chloride-acrylic acid copolymer among the component (B) can be determined by measuring under the following measurement conditions by nuclear magnetic resonance (NMR). [Measurement Conditions] Solvent: Heavy water (D2O) Measuring instrument: JNM-LA300 (300 MHz, manufactured by JEOL Ltd.)

[0027] The weight average molecular weight of the cationic polymer of the component (B) is not particularly limited and can be appropriately selected according to the purpose. However, from the viewpoint of the moisturizing feeling of the skin after towel drying, it is preferably 10,000 to 1,000,000, more preferably 15,000 to 450,000. The weight average molecular weight of the cationic polymer of the component (B) can be measured, for example, by an SEC-MALLS-RI system (measurement conditions: column: TSKgel α series α-M column 30 cm manufactured by Tosoh Corporation, solvent: 0.3 M aqueous sodium nitrate solution).

[0028] As the cationic polymer of the component (B), those synthesized appropriately may be used, or commercially available products may be used. Examples of the commercially available products include the following. Marcote 100 (component name: dimethyldiallylammonium chloride polymer, manufactured by Lubrizol Corporation, weight average molecular weight: 150,000).

[0029] Marcote 295 (Component name: Dimethyldiallylammonium chloride-acrylic acid copolymer, manufactured by Lubrizol Corporation, weight average molecular weight: 190,000, n:m = 5:95 (molar ratio) in the general formula (1), molar ratio of the structural unit derived from dimethyldiallylammonium chloride is 95 mol%).

[0030] Marcote 280 (Component name: Dimethyldiallylammonium chloride-acrylic acid copolymer, manufactured by Lubrizol Corporation, weight average molecular weight: 450,000, n:m = 35:65 (molar ratio) in the general formula (1), molar ratio of the structural unit derived from dimethyldiallylammonium chloride is 65 mol%).

[0031] Among these, as the cationic polymer of the component (B), Marcote 100 and Marcote 295 are preferable from the viewpoint of the moisturizing feeling of the skin after towel drying.

[0032] The content of the cationic polymer of the component (B) is used in the range of 0.1% by mass to 3% by mass, preferably 0.4% by mass to 1% by mass. The skin cleansing composition in this range is very excellent in foam volume, foam quality, and the moisturizing feeling of the skin after towel drying.

[0033] (B) The component may be used alone or in combination of two or more thereof.

[0034] The component (C) used in the present invention is at least one selected from monoglycerin esters of fatty acids, monoalkyl glyceryl ethers, monoglycerin esters of fatty acids, or monoalkyl propylene glycol ethers in which the acyl group or the alkyl group has 8 to 12 carbon atoms and is linear, and those usually used in cosmetics can be used.

[0035] Specific component names include glyceryl caprylate, glyceryl capric acid, glyceryl laurate, propylene glycol caprylate, propylene glycol capric acid, propylene glycol laurate, caprylyl glyceryl ether, etc. Commercially available products include TYPE-BP (manufactured by Riken Vitamin Co., Ltd.), NIKKOL SEFSOL-218 (manufactured by Nikko Chemicals Co., Ltd.), MONOMULSE 90-L12 (manufactured by BASF), etc.

[0036] (C) The acyl group or alkyl group of the component has 8 to 12 carbon atoms and is linear. Those having a branched structure in the acyl group or alkyl group cannot increase the amount of coacervate formed. Further, when the carbon number of the acyl group or alkyl group is greater than 12, the foaming and foam quality of the skin cleansing composition are significantly deteriorated. On the other hand, when the carbon number of the acyl group or alkyl group is less than 8, the amount of coacervate formed cannot be increased.

[0037] (C) The blending amount of the component is not particularly limited, but 0.5% by mass to 15% by mass is preferable, and more preferably it is used in the range of 1% by mass to 5% by mass. In this range, the coacervate formed by the components (A) to (C) improves both the cleansing performance against cosmetics containing a large amount of oil such as makeup and the moisturizing feeling of the skin after towel drying.

[0038] (C) The component may be used alone or in combination of these without any problem.

[0039] The amphoteric surfactant (D) used in the present invention has at least one cationic functional group and one anionic functional group, becomes cationic when the solution is acidic, anionic when alkaline, and has properties close to those of a nonionic surfactant near the isoelectric point. Amphoteric surfactants are classified into carboxylic acid type, sulfate ester type, sulfonic acid type, and phosphate ester type according to the type of anion group. In the present invention, the carboxylic acid type, sulfate ester type, and sulfonic acid type are preferred. The carboxylic acid type is further classified into amino acid type and betaine type. Particularly preferred is the betaine type. Specifically, imidazolinium betaine, alkyl betaine, and amide betaine can be mentioned.

[0040] (D) The blending amount of the component is not particularly limited, but preferably 0.5% by mass to 10% by mass, and more preferably used in the range of 1% by mass to 6% by mass. In this range, when coexisting with components (A), (B), and (C), the production amount of coacervate is improved, and the foam quality and the moisturizing feeling of the skin after towel drying are very excellent.

[0041] (D) As the component, any one of these may be used alone, or a mixture thereof may be used.

[0042] In addition to the above essential components, the composition of the present invention may also contain components generally used in cosmetics and the like as needed. For example, pearlescent agents, moisturizers, thickeners, water-soluble polymers, fragrances, bactericides, preservatives, antioxidants, chelating agents, ultraviolet absorbers, anti-inflammatory agents, antioxidants, cooling agents, crude drug extracts, and vitamins can be added appropriately in a timely manner. The blending ratio when these components are contained can be appropriately selected according to the type and purpose, and one kind may be used alone, or two or more kinds may be used in appropriate combination.

[0043] The composition of the present invention has excellent cleansing performance for cosmetics containing a large amount of oil, has excellent moisturizing feeling, and is low in irritation. Therefore, for example, it is used in facial cleansers, hand soaps, body soaps, cleansing foams, makeup removers, etc., and is particularly preferably used in facial cleansers.

Examples

[0044] Next, the skin cleansing composition of the present invention will be described in detail with reference to examples, but the present invention is not limited thereto. First, the test methods and evaluation methods employed in each example will be described.

[0045] Examples 1 to 15 and Comparative Examples 1 to 8 Skin cleansing compositions having the compositions shown in Tables 1 and 2 were prepared by a conventional method. The evaluation results of foam volume, foam quality, cleansing performance against makeup, moisturizing feeling of the skin after towel drying, rinsability, irritation, and the absorbance at 540 nm (an index of coacervate production amount) when the preparation was diluted 8-fold with purified water are also shown in Tables 1 and 2, respectively.

[0046] (1) Foam volume evaluation After diluting the skin cleansing compositions of the examples and comparative examples 8-fold with purified water, 10 professional panelists used a facial foam maker manufactured by Celia Co., Ltd. (product name: Fluffy Rich) to move it up and down 100 times to generate foam, and the foam volume was evaluated by sensory evaluation. The evaluation criteria are as follows. [Evaluation criteria] ◎: Extremely good. The number of subjects who answered that the foam volume is large is 8 or more. 〇: Good. The number of subjects who answered that the foam volume is large is 6 or 7. △: Slightly bad. The number of subjects who answered that the foam volume is large is 4 or 5. ×: Bad. The number of subjects who answered that the foam volume is large is 3 or less.

[0047] (2) Foam quality evaluation Using the same method as the above foam volume evaluation method, 10 professional panelists evaluated the foam quality (creaminess) of the skin cleansing compositions of the examples and comparative examples by sensory evaluation. The evaluation criteria are as follows. [Evaluation criteria] ◎: Extremely good. The number of subjects who answered that the foam quality is good is 8 or more. 〇: Good. The number of subjects who answered that the foam quality is good is 6 or 7. △: Slightly bad. The number of subjects who answered that the foam quality is good is 4 or 5. ×: Bad. The number of subjects who answered that the foam quality is good is 3 or less.

[0048] (3) Evaluation of the moisturizing feeling of the skin after towel drying Ten professional panelists diluted the skin cleansing compositions of the examples and comparative examples 8-fold with purified water, then whipped them up and down 100 times using a facial foam maker manufactured by Ceria Co., Ltd. (product name: Fluffy Rich), washed their faces, and evaluated the moisturizing feeling of the skin after towel drying by sensory evaluation. The evaluation criteria are as follows. [Evaluation Criteria] ◎: Extremely good. The number of subjects who answered that the moisturizing feeling of the skin after towel drying was high was 8 or more. 〇: Good. The number of subjects who answered that the moisturizing feeling of the skin after towel drying was high was 6 or 7. △: Slightly bad. The number of subjects who answered that the moisturizing feeling of the skin after towel drying was high was 4 or 5. ×: Bad. The number of subjects who answered that the moisturizing feeling of the skin after towel drying was high was 3 or less.

[0049] (4) Evaluation of rinsing property Ten professional panelists used the same method as the method for evaluating the moisturizing feeling of the skin after towel drying above to evaluate the rinsing property during face washing of the skin cleansing compositions of the examples and comparative examples by sensory evaluation. The evaluation criteria are as follows. [Evaluation Criteria] ◎: Extremely good. The number of subjects who answered that the rinsing property was good was 8 or more. 〇: Good. The number of subjects who answered that the rinsing property was good was 6 or 7. △: Slightly bad. The number of subjects who answered that the rinsing property was good was 4 or 5. ×: Bad. The number of subjects who answered that the rinsing property was good was 3 or less.

[0050] (5) Evaluation of irritation Ten professional panelists used the same method as the method for evaluating the moisturizing feeling of the skin after towel drying above to evaluate the irritation during or after face washing of the skin cleansing compositions of the examples and comparative examples by sensory evaluation. The evaluation criteria are as follows. [Evaluation Criteria] ◎: Extremely good. The number of subjects who answered that they felt irritation during or after face washing was 0. 〇: Good The number of subjects who answered that they felt irritation during or after face washing was 1 person △: Slightly bad The number of subjects who answered that they felt irritation during or after face washing was 2 people ×: Bad The number of subjects who answered that they felt irritation during or after face washing was 3 or more people

[0051] (6) Evaluation of cleansing performance for makeup Ten professional panels used the skin cleansing compositions of the examples and comparative examples to evaluate the cleansing performance for makeup by the following method. The evaluation criteria are as follows. [Evaluation method] 1: Mark a circle with a diameter of 4 cm on human skin, and evenly apply 0.02 g of a W / O type base makeup (Naris Leddy Makeup Base UV Long Keep) colored with 0.1% by mass of iron oxide red in the circle with a finger wearing a finger cot. 2: Dry for 30 minutes. 3: After sufficiently foaming the skin cleansing composition, take 0.3 g of the foam and place it in the circle, and rub it 50 times. 4: Wash with water and visually confirm the degree of makeup removal. [Evaluation criteria] ◎: Extremely good The number of subjects who answered that the cleansing performance was high was 8 or more people 〇: Good The number of subjects who answered that the cleansing performance was high was 6 or 7 people △: Slightly bad The number of subjects who answered that the cleansing performance was high was 4 or 5 people ×: Bad The number of subjects who answered that the cleansing performance was high was 3 or fewer people

[0052] [Evaluation of the amount of coacervate generated] Since coacervate causes turbidity in proportion to its amount when generated, the amount of generation can be evaluated by absorbance. Generally, when consumers foam a facial cleansing foam, it is known to foam the facial cleansing foam with 7 times the amount of water. Therefore, in this evaluation, after diluting the skin cleansing compositions of the examples and comparative examples 8-fold with purified water, 200 μL was added to a 96-well plate (TrueLine culture plate, TR5003, culture area 0.32 square cm / 1 well), and the absorbance at 540 nm was measured using a microplate reader (TECAN, infinite F200 PRO).

[0053]

Table 1

[0054]

Table 2

[0055] (B) component and (B’) component

Table 3

[0056] Examples 1 to 15 and Comparative Examples 1 to 8 are transparent liquids. From Examples 1 to 15, the skin cleansing composition containing components (A) to (C) simultaneously becomes turbid when diluted 8-fold, and since it shows absorption at a wavelength of 540 nm, it can be seen that coacervates are formed. Also, it can be seen that the skin cleansing composition with an absorbance of the diluted solution of 0.8 or more has a high moisturizing feeling on the skin after towel drying. In addition, the foam volume, foam quality, cleansing performance, rinsing property, and irritation also gave good results. On the other hand, no coacervates are formed when the (B) component is not added as in Comparative Example 2. Also, as in Comparative Examples 3 to 8, when the molar ratio of the structural unit derived from dimethyldiallylammonium chloride in the cationic polymer to be blended is low, no coacervates are formed with the fatty acid salt. Further, when the (C) component is not added as in Comparative Example 6, the cleansing performance is low, and since the amount of coacervate formed is small, the moisturizing feeling on the skin after towel drying is low.

[0057] The following is a formulation example of the skin cleansing composition of the present invention. The skin cleansing composition can be obtained by a conventional method.

[0058] Example 16 <Facial Wash Foam> Formulation components Amount (%) Potassium laurate 7.60 Potassium myristate 13.00 Potassium palmitate 7.00 Potassium stearate 12.40 Lauryl hydroxysultaine 0.50 Glycerin 20.00 Dimethyldiallylammonium chloride-acrylic acid copolymer ※1 1.00 Glyceryl monolaurate 5.00 Propylene glycol monolaurate 5.00 1,3-Butylene glycol 5.00 PEG-9M 0.20 Lauric acid 1.90 Myristic acid 3.25 Palmitic acid 1.75 Stearic acid 3.10 Chelating agent Appropriate amount pH adjuster Appropriate amount Water Balance Total 100.00 ※1 Merquat 295 (Component name: Dimethyldiallylammonium chloride-acrylic acid copolymer, manufactured by Lubrizol Corporation, weight average molecular weight: 190,000, n:m = 5:95 (molar ratio) in the general formula (1), molar ratio of the structural unit derived from dimethyldiallylammonium chloride is 95 mol%) This skin cleansing composition is a white cream with a pearly feel, has excellent cleansing performance against makeup, has excellent moisturizing feeling on the skin after towel drying, has good foaming and foam quality, has little irritation to the skin, and has good rinsing property.

[0059] Example 17 <Pump Foamer Type Facial Wash> Formulation components Amount (%) Potassium laurate 6.00 Potassium myristate 3.40 Potassium isostearate 0.60 Sodium lauroyl methyl alaninate 3.00 Decyl glucoside 1.50 Lauryl hydroxycysteine 5.00 Cocamidopropyl betaine 5.00 Glycerin 5.00 Dimethyldiallylammonium chloride polymer ※2 0.10 Glyceryl monocaprylate 1.00 Propylene glycol monolaurate 5.00 DPG 5.00 Glucosyl trehalose 2.00 Chelating agent appropriate amount pH adjuster appropriate amount Water remainder Total 100.00 ※2 Marcote 100 (Component name: Dimethyldiallylammonium chloride polymer, manufactured by Lubrizol Corporation, weight average molecular weight: 150,000) This skin cleansing composition is a transparent liquid and is a facial cleanser that comes out as foam when filled in a pump dispenser. Also, while having excellent cleansing performance against makeup, it is excellent in the moisturizing feeling of the skin after towel drying, has good foaming and foam quality, causes little irritation to the skin, and has good rinsing property.

[0060] Example 18 <Body Soap> Formulation components Formulation amount (%) Potassium coconut fatty acid 15.00 Potassium myristate 9.80 Lauryl hydroxycysteine 2.00 Glycerin 15.00 Dimethyldiallylammonium chloride - acrylic acid copolymer ※1 3.00 Glyceryl monocaprylyl ether 1.00 DPG 5.00 Chelating agent appropriate amount pH adjuster appropriate amount Water remainder Total 100.00 This skin cleansing composition is a transparent liquid, has excellent cleansing performance against sunburn prevention, is excellent in the moisturizing feeling of the skin after towel drying, has good foaming and foam quality, has little irritation to the skin, and has good rinsing property.

Claims

1. (A) A higher fatty acid salt having 8 to 22 carbon atoms in the fatty acid (B) At least one cationic polymer selected from a dimethyldiallylammonium chloride polymer and a dimethyldiallylammonium chloride-acrylic acid copolymer (C) At least one selected from a monoglyceride fatty acid ester and a monoglyceride propylene glycol fatty acid ester, wherein the acyl group or the alkyl group has 8 to 12 carbon atoms and is linear A skin cleansing composition comprising the above components, and when the component (B) is a dimethyldiallylammonium chloride-acrylic acid copolymer, the molar ratio of the structural unit derived from dimethyldiallylammonium chloride is 65 mol% or more in the dimethyldiallylammonium chloride-acrylic acid copolymer.

2. The skin cleansing composition according to claim 1, further comprising (D) an amphoteric surfactant.

3. The skin cleansing composition according to claim 1 or 2, wherein the content of (B) is 0.1% by mass to 3% by mass.

4. The skin cleansing composition according to any one of claims 1 to 3, wherein the content of (C) is 0.5% by mass to 15% by mass.

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