JP2024090814A - Cleaning composition - Google Patents

Abstract

[Problem] To provide a detergent composition that does not leave the skin sticky when rinsing after washing, has a good stopping feeling, gives a refreshing feeling to the touch, suppresses hair squeaks when rinsing, makes even long hair smooth to the touch, is less likely to leave hair unrinsed, and gives hair a refreshing feeling after rinsing. [Solution] A detergent composition containing the following components (A) and (B): (A) one or more selected from N-acyl neutral amino acids, N-acyltaurines, and salts thereof, and (B) a natural polysaccharide-based cationic polymer having a viscosity of 1000 mPa·s or less in a 1% by mass aqueous solution at 25°C and a degree of cationization of 2% or more. [Selected Figure] None

Description

The present invention relates to a cleaning composition.

In general, different detergents are used for washing the body and for washing hair. This is because, while both detergents for washing the body and for washing hair require foaming and cleaning power, different performance is required for the feel when used. Specifically, detergents for washing the body are required to rinse quickly and have a refreshing feel by providing a tight feeling, while detergents for washing hair are required to have a smooth feel and runny fingers through the time of washing, rinsing, and after towel drying.
In recent years, with the change in lifestyle, there is a need to wash from head to body in a short time in the morning with a shower or the like, and to easily wash both hair and body with one detergent. For this reason, detergent compositions that show high cleaning performance for both skin and hair and also provide an excellent cleaning sensation have been studied.
For example, Patent Document 1 describes that a cleanser composition containing a fatty acid or a salt thereof, an alkyl ether carboxylic acid or a salt thereof, an alkyl sulfuric acid or a salt thereof, and a cationic polymer in specific proportions does not make the skin feel sticky when rinsing after cleaning, has a good stop feeling, and provides a refreshing feeling to the touch, and further, reduces hair squeakiness when rinsing, makes the hair smooth to the touch, is less likely to leave hair unrinsed, and provides a refreshing feeling to the touch after rinsing.

JP 2020-15676 A

However, even with the cleansing composition of Patent Document 1, the smoothness of hair during washing is not sufficient, and there is a problem that hair is easily tangled, particularly in the case of long hair.
To provide a detergent composition which can wash both hair and the body at the same time, and when rinsed after washing, gives the body a quick feeling of rest and leaves the skin refreshed after washing, while at the same time makes the hair smooth to the touch and prevents hair from being left behind after rinsing, while providing a refreshed feel after rinsing.

The inventors have discovered that a cleaning composition that solves the above problems can be obtained by combining one or more selected from N-acyl neutral amino acids, N-acyltaurines, and their salts with a natural polysaccharide-based cationic polymer having a specific viscosity and degree of cationization.

The present invention comprises the following components (A) and (B):
(A) one or more selected from N-acyl neutral amino acids, N-acyltaurines, and salts thereof;
(B) The present invention relates to a detergent composition containing a natural polysaccharide-based cationic polymer, the viscosity of a 1% by mass aqueous solution at 25°C being 1,000 mPa·s or less and the degree of cationization being 2% or more.

The detergent composition of the present invention does not leave the skin feeling sticky when rinsing after washing, has a good stopping feeling, and leaves a refreshing feeling. Moreover, hair is prevented from squeaking when rinsing, making it smooth to the touch and less likely to leave hair behind. In particular, even long hair is smooth and does not tangle, and after rinsing, hair leaves a refreshing feeling.

The N-acyl neutral amino acid, N-acyltaurine and salts thereof as component (A) used in the present invention may be any of those commonly used in conventional detergent compositions.
The acyl group may be saturated or unsaturated, linear or branched, and has 8 to 22 carbon atoms, but linear acyl groups are preferred. Of these, linear acyl groups having 12 to 18 carbon atoms and coconut oil fatty acid acyl groups (cocoyl groups) containing these as main components are preferred.

Examples of neutral amino acids include glycine, alanine, valine, leucine, isoleucine, serine, threonine, and proline, with glycine and alanine being preferred.
Examples of salts include alkali metal salts such as sodium salts and potassium salts, alkaline earth metal salts such as calcium salts and magnesium salts, inorganic salts such as aluminum salts and salts with zinc, and organic amine salts such as ammonia, monoethanolamine, diethanolamine, and triethanolamine, and organic salts of basic amino acids such as arginine and lysine. Of these, alkali metal salts are preferred, and sodium salts are more preferred.

Examples of N-acyl neutral amino acid salts include sodium cocoyl glycine, potassium cocoyl glycine, sodium cocoyl alanine, sodium cocoyl methyl alanine, sodium lauroyl glycine, sodium lauroyl alanine, sodium lauroyl methyl alanine, etc. Among these, potassium cocoyl glycine, sodium cocoyl alanine, and sodium cocoyl methyl alanine are preferred.
Examples of N-acyltaurate salts include sodium methyl cocoyl taurate and sodium methyl lauroyl taurate.

From the viewpoint of ease of finger-combing when rinsing hair, it is preferable that component (A) contains one or more selected from potassium cocoyl glycine, sodium methyl cocoyl taurate, and sodium methyl cocoyl alanine.

Component (A) can be used alone or in combination of two or more types. From the viewpoint of foaming properties and refreshing feeling on the skin when rinsing, the content is preferably 0.5 to 10 mass% of the total composition, more preferably 0.8 to 8 mass%, and even more preferably 1 to 5 mass%.

The component (B) used in the present invention is a natural polysaccharide-based cationic polymer having a viscosity of 1% by mass aqueous solution at 25° C. of 1000 mPa·s or less and a degree of cationization of 2% or more.
The viscosity is measured using a BM type viscometer with a rotor No. 2 at 25° C. and rotating at 12 rpm for 1 minute.
The viscosity of a 1% by mass aqueous solution of component (B) at 25°C is 1000 mPa·s or less, and preferably 800 mPa·s or less, from the viewpoints of finger-combability when rinsing hair and minimal stickiness when rinsing skin.

The degree of cationization is determined by the Kjeldahl method.
The degree of cationization is 2% or more, and preferably 2.2% or more, from the viewpoint of finger-combing property during rinsing of hair.

The cationic polymer of component (B) is one that is used in ordinary detergent compositions, and examples thereof include cationized guar gum such as O-[2-hydroxy-3-(trimethylammonio)propyl]guar gum chloride, cationized cellulose such as polyquaternium-10, cationized starch, cationized locust bean gum, cationized tara gum, etc. Among these, from the viewpoints of finger-combing when rinsing hair and less stickiness when rinsing skin, it is preferable to include one or more selected from cationized guar gum, cationized cellulose, and cationized starch, and it is more preferable to include cationized guar gum.

Component (B) can be used alone or in combination of two or more types. From the viewpoint of finger-combability when rinsing hair and minimal stickiness when rinsing skin, the content is preferably 0.1 to 5 mass% of the total composition, more preferably 0.2 to 3 mass%, and even more preferably 0.3 to 1 mass%.

The cleaning composition of the present invention further comprises (C) a compound represented by general formula (1):
R ¹ -O-(CH ₂ CH ₂ O) m -SO ₃ Y ¹ (1)
(In the formula, ^R1 represents an alkyl group or alkenyl group having 8 to 22 carbon atoms, m represents a number from 0 to 20, and the average of m is 0 to 5, and ^Y1 represents a hydrogen atom, an alkali metal, an alkaline earth metal, ammonium, an organic ammonium, or a basic amino acid.)
The composition may contain an alkyl sulfate represented by the following formula:

In the formula, R ¹ is an alkyl or alkenyl group having 8 to 22 carbon atoms, which may be either linear or branched, preferably an alkyl or alkenyl group having 12 to 18 carbon atoms, more preferably an alkyl group having 12 to 14 carbon atoms.
In the formula, m represents a number from 0 to 20, and is more preferably from 0 to 12. m represents the number of moles of ethylene oxide added, and the average number of moles added (average value of m) in the composition of component (C) is 0 to 5, and preferably 0 to 3, from the viewpoints of foamability and foam volume.

Examples of ^Y1 include a hydrogen atom, alkali metals such as sodium and potassium, alkaline earth metals such as calcium and magnesium, ammonium, organic ammonium such as alkylammonium, alkanolammonium, and glucammonium, and basic amino acids such as L-arginine. Among these, alkali metals and ammonium are preferred from the viewpoints of ease of solubility in water and compatibility.

As the component (C), sodium lauryl sulfate, polyoxyethylene (1) lauryl ether ammonium sulfate, polyoxyethylene (1) lauryl ether sodium sulfate, polyoxyethylene (2) lauryl ether sodium sulfate, etc. are preferred.
In addition, commercially available products such as EMAL 0, EMAL 10, EMAL 125HP, EMAL 170J, EMAL 2F, EMAL 270J, and EMAL E-27C (all manufactured by Kao Corporation) can also be used.
Furthermore, from the viewpoint of reducing the squeaky feeling during rinsing of hair, component (C) preferably contains 10 to 50 mass % of a component in which m = 0 in general formula (3).

Component (C) may be used alone or in combination of two or more. From the viewpoint of foaming ability and foam volume, the content, as acid, of the total composition is preferably 1% by mass or more, more preferably 2% by mass or more, and even more preferably 3% by mass or more. From the viewpoint of skin freshness and speed of rinsing, the content, as acid, of the total composition is preferably 20% by mass or less, more preferably 15% by mass or less, and even more preferably 10% by mass or less. And the content of component (C), as acid, of the total composition is preferably 1 to 20% by mass, more preferably 2 to 15% by mass, and even more preferably 3 to 10% by mass.

The cleaning composition of the present invention further comprises (D) a compound represented by general formula (2):
R ² -O-(CH ₂ CH ₂ O) n -CH ₂ -COOY ² (2)
(In the formula, ^R2 represents an alkyl group having 4 to 22 carbon atoms, n represents a number from 0 to 20, and ^Y2 represents a hydrogen atom, an alkali metal, an alkaline earth metal, ammonium, an organic ammonium, or a basic amino acid.)
The alkyl ether carboxylic acid represented by the following formula (I) or a salt thereof may be contained.

In the formula, ^R2 is an alkyl group having 4 to 22 carbon atoms, preferably an alkyl group having 6 to 20 carbon atoms, more preferably an alkyl group having 8 to 18 carbon atoms, even more preferably an alkyl group having 8 to 16 carbon atoms, and even more preferably an alkyl group having 10 to 16 carbon atoms. The alkyl chain of ^R2 may be either a straight chain or a branched chain, but from the viewpoint of foamability, a straight chain alkyl group is preferred.
Furthermore, the average carbon number of ^R2 is preferably from 10.8 to 12.8, and more preferably from 10.8 to 12.5, from the viewpoints of foaming ability, foam quality, and low temperature stability.
In addition, ^R2 preferably contains two or more alkyl groups, and from the viewpoint of excellent foam volume and foam quality, the component having the largest alkyl chain length preferably accounts for 55% by mass or more and less than 97% by mass, more preferably 60 to 95% by mass, and even more preferably 70 to 95% by mass, of component (D).

In the formula, n represents a number from 0 to 20, and more preferably from 0 to 12. Note that n represents the number of moles of ethylene oxide added, and the average number of moles added (average value of n) in the composition of component (D) is preferably 1.5 to 10, more preferably 1.5 to 4.5, even more preferably 1.5 to 3.4, more preferably 2.8 to 3.4, and even more preferably 2.8 to 3.1, from the viewpoints of good foam quality and imparting a refreshing feeling to the skin during rinsing.
From the viewpoint of improving the squeaky feeling during rinsing, the alkyl ether carboxylic acid of component (D) preferably contains 4.3 to 30 mass %, more preferably 4.9 to 27 mass %, even more preferably 9.6 to 27 mass %, still more preferably 9.9 to 16 mass %, and even more preferably 9.9 to 15 mass % of a component of general formula (2) where n = 0.
Furthermore, the total content of the component n=1 and the component n=2 is preferably less than 40% by mass, more preferably 20 to 38% by mass, even more preferably 27 to 36.5% by mass, and even more preferably 35 to 36.1% by mass, from the viewpoints of foam quality and foam amount.

In the formula, examples of ^Y2 include a hydrogen atom, alkali metals such as sodium and potassium, alkaline earth metals such as calcium and magnesium, ammonium, organic ammonium derived from alkanolamines such as monoethanolamine, diethanolamine and triethanolamine, trishydroxymethylaminomethane, and basic amino acids such as L-arginine. Among these, alkali metals are preferred from the viewpoints of foaming properties, low-temperature stability, and lack of coloration over time.

In terms of achieving a balance between foaming properties, cleaning properties, and squeaky feeling during rinsing, it is preferable that the mass ratio of the components n=0, 1, 2, 3, and 4 in the alkyl ether carboxylic acid of component (D) in general formula (2) is (mass of component n=0):(mass of component n=1):(mass of component n=2):(mass of component n=3):(mass of component n=4)=1:0.99-3.50:0.89-3.00:0.76-3.00:0.63-1.6.

Furthermore, in terms of foaming and rinsing properties, it is preferable that the component n=0 in general formula (2) is contained in an amount of 9.6% by mass or more and less than 12% by mass, and that the ratio of (mass of component n=0):(mass of component n=1):(mass of component n=2):(mass of component n=3):(mass of component n=4)=1:1.53-1.87:1.59-2.25:1.33-2.16:1.14-1.52.

Furthermore, in terms of foam volume, foam quality, and rinsing ability, it is preferable that the component n=0 in general formula (2) is contained at 9.9 to 11.5 mass%, and the ratio of (mass of component n=0):(mass of component n=1):(mass of component n=2):(mass of component n=3):(mass of component n=4) = 1:1.58-1.84:1.72-2.17:1.49-2.00:1.14-1.52.

In component (D), in general formula (2), ^R2 is an alkyl group having 4 to 22 carbon atoms, the average carbon number of ^R2 is 10.8 to 12.8, the component having the largest amount of alkyl chain length is 55% by mass or more and less than 97% by mass, n is a number from 0 to 20, the average value is 1.5 to 10, the component with n=0 is contained at 4.9 to 27% by mass, and the total content of the component with n=1 and the component with n=2 is preferably 20 to 37% by mass. By doing so, foaming property can be accelerated.

In component (D), in general formula (2), ^R2 is an alkyl group having 6 to 20 carbon atoms, the average carbon number of ^R2 is 10.8 to 12.8, the component having the largest amount of alkyl chain length is 55% by mass or more and less than 97% by mass, n is a number from 0 to 20, the average value is 2.5 to 4.5, the component with n=0 is contained at 9.6 to 27% by mass, and the total amount of the component with n=1 and the component with n=2 is preferably 27 to 36.5% by mass. By doing so, foaming property can be accelerated.

In component (D), in general formula (2), ^R2 is an alkyl group having 8 to 18 carbon atoms, the average carbon number of ^R2 is 10.8 to 12.8, the component having the largest amount of alkyl chain length is 55% by mass or more and less than 97% by mass, n is a number from 0 to 20, the average value is 2.5 to 3.4, the component with n=0 is contained at 9.6 to 27% by mass, and the total amount of the component with n=1 and the component with n=2 is preferably 27 to 36.5% by mass. This can enhance the refreshing feeling of the body when rinsing.

In component (D), in general formula (2), R ² is an alkyl group having 8 to 16 carbon atoms, the average carbon number of R ² is 10.8 to 12.5, the component having the largest alkyl chain length is 60 to 95 mass%, n is a number from 0 to 20, the average value is 2.8 to 3.4, the component with n=0 is 9.6 to 27 mass%, preferably 9.9 to 16 mass%, and the total content of the component with n=1 and the component with n=2 is preferably 27 to 36.5 mass%. By doing so, the foam volume and foam quality can be improved.

In the component (D) of the present invention, the distribution of the alkyl chain length of ^R2 , the average alkyl chain length of ^R2 , the amount of the component where n=0, the average added mole number of n, and the mass ratio of the component where n=0, 1, 2, 3, and 4 can be determined by analyzing the alkyl ether carboxylic acid represented by the general formula (2) by gas chromatography. Specifically, the analysis is performed using the peak area obtained by gas chromatography according to the method described in JP2017-75123A.

Component (D) may be used alone or in combination of two or more. From the viewpoint of cleansing ability and suppressing a feeling of tightness on the skin after cleansing, the content is preferably 1% by mass or more, more preferably 1.5% by mass or more, and even more preferably 2% by mass or more, as an acid, in the total composition. From the viewpoint of foam quality, the content is preferably 20% by mass or less, more preferably 15% by mass or less, and even more preferably 10% by mass or less, as an acid, in the total composition. The content of component (D) is preferably 1 to 20% by mass, more preferably 1.5 to 15% by mass, and even more preferably 2 to 10% by mass, as an acid, in the total composition.

The cleaning composition of the present invention may further contain (E) an amphoteric surfactant.
The amphoteric surfactant may be any surfactant that is used in a typical detergent composition, and examples thereof include acetate betaine type surfactants such as lauryl dimethylamino acetate betaine, amine oxide type surfactants such as lauryl dimethylamine oxide, imidazolinium betaine type surfactants such as 2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazolinium betaine, amido betaine type surfactants such as lauric acid amidopropyl betaine, and sulfobetaine type surfactants such as lauryl hydroxysulfobetaine.
Among these, from the viewpoint of foam quality, it is preferable to contain one or more types selected from sulfobetaine type surfactants and amidobetaine type surfactants.

Component (E) may be used alone or in combination of two or more types. From the viewpoint of foam quality and foam volume, the content is preferably 0.5% by mass or more in the total composition, more preferably 1% by mass or more, and even more preferably 1.5% by mass or more. From the viewpoint of skin freshness and speed of rinsing, the content is preferably 20% by mass or less in the total composition, more preferably 15% by mass or less, and even more preferably 10% by mass or less. The content of component (E) is preferably 0.5 to 20% by mass in the total composition, more preferably 1 to 15% by mass, and even more preferably 1.5 to 10% by mass.

The cleansing composition of the present invention may further contain (F) a nonionic surfactant, which can control the creaking of hair caused by scum generated during rinsing and improve the ease with which hair can be combed with fingers.
The component (F) is one used in a normal detergent composition, and examples thereof include polyoxyethylene alkyl ethers, polyoxyethylene fatty acid esters, polyoxyethylene polyhydric alcohol fatty acid esters, sorbitan fatty acid esters, polyoxyethylene sorbitan fatty acid esters, sorbitol fatty acid esters, polyoxyethylene sorbitol fatty acid esters, sucrose fatty acid esters, etc. In terms of maintaining a long rinsing time with good finger combability when rinsing hair, nonionic surfactants in which the hydrophilic moiety is only an EO addition moiety, such as polyoxyethylene alkyl ethers, polyoxyethylene fatty acid esters, and polyoxyethylene polyhydric alcohol fatty acid esters, are preferred, and linear monoalkyl polyoxyethylene addition type nonionic surfactants are more preferred, and in addition, in terms of rinsing easily when rinsing the body and providing a refreshing wash by not giving the skin any squeaky feeling, polyoxyethylene alkyl ether type nonionic surfactants are more preferred.

Furthermore, from the viewpoint of rinsing hair and maintaining a long rinsing time for good finger combability, the HLB of component (F) is preferably from 5 to 20, more preferably from 6 to 16, and even more preferably from 7 to 15.
Here, HLB is an index showing the hydrophilic-lipophilic balance, and in the present invention, the value calculated by the following formula proposed by Oda and Teramura et al. is used.

Furthermore, from the viewpoint of maintaining a long rinsing time during which the hair remains easy to comb with fingers when rinsing the hair, it is preferable that component (F) contains two or more nonionic surfactants having different HLB values, and it is even more preferable that it contains three types.
Furthermore, when two or more nonionic surfactants having different HLB values are contained, it is preferable that the difference in HLB value between the nonionic surfactant with the largest HLB value and the nonionic surfactant with the smallest HLB value is 3 or more, and more preferably 5 or more.

Component (F) can be used alone or in combination of two or more types. From the viewpoint of ease of finger-combing when rinsing hair, the content is preferably 0.1 to 20% by mass, more preferably 0.2 to 15% by mass, and even more preferably 0.5 to 10% by mass, of the total composition.

The cleaning composition of the present invention may further contain an acrylic acid-based polymer.
Examples of the acrylic acid-based polymer include carboxyvinyl polymers and acrylic acid/alkyl methacrylate copolymers, and from the viewpoint of stability, it is preferable to include an acrylic acid/alkyl methacrylate copolymer.

The acrylic acid-based polymers can be used alone or in combination of two or more. From the viewpoint of stability, the content is preferably 0.01 to 2 mass% of the total composition, more preferably 0.05 to 1.5 mass%, and even more preferably 0.1 to 1 mass%.

The cleaning composition of the present invention contains water as a solvent, which constitutes the balance of the above-mentioned components and other components constituting the cleaning composition. The content of water in the total composition is preferably 10 to 94 mass%, more preferably 15 to 90 mass%, and even more preferably 30 to 85 mass%.

The detergent composition of the present invention may further contain components used in ordinary detergent compositions, such as surfactants other than components (A), (C), (D), (E) and (F), moisturizers, oily components, bactericides, anti-inflammatory agents, preservatives, chelating agents, thickeners, salts, pearlizing agents, scrubbing agents, fragrances, cooling agents, pigments, ultraviolet absorbing agents, antioxidants, plant extracts, etc.

From the viewpoint of finger combability when rinsing hair, the detergent composition of the present invention preferably contains no more than 1% by mass of fatty acid or a salt thereof in the total composition, and more preferably no more than 0.5% by mass.

From the viewpoint of providing a refreshing feeling to the skin during rinsing, the content of the silicone compound in the cleansing composition of the present invention is preferably 1% by mass or less, and more preferably 0.5% by mass or less, of the total composition.

The cleaning composition of the present invention is produced by mixing the ingredients in a conventional manner. The resulting cleaning composition may be in either liquid or solid form, but if it is in liquid form, it preferably has a viscosity of 1,000 to 20,000 mPa·s as measured at 30° C. with a BM type viscometer (manufactured by Tokyo Keiki Co., Ltd.), which can be adjusted by appropriately selecting the ingredients.
The pH is preferably 4.5 to 9, more preferably 5 to 8, and even more preferably 5.5 to 7. The pH was measured at 30° C. after diluting each cleaning composition 20 times with ion-exchanged water.

The cleanser composition of the present invention is suitable as a cleanser composition for the body (including the face) or hair, such as a facial cleanser, body soap, hand soap, shampoo, or whole-body cleanser, and is particularly preferably used as a whole-body cleanser including the body and hair.
The cleansing composition of the present invention can be applied to the body and hair, washed, and then rinsed, thereby cleaning the entire body at once.
The method for washing the whole body with the detergent composition of the present invention is, for example, as follows: That is, a suitable amount of the detergent composition of the present invention is applied to the body, i.e., the skin of the body such as the face, limbs, and trunk, and hair, and then the composition is allowed to penetrate or lather for washing, and then the composition is rinsed with warm water from a shower, etc. Alternatively, a suitable amount of the detergent composition can be applied to a washing aid such as a resin towel, a resin sponge, or a brush, and lathered for use, for more effective washing.

Examples 1 to 6, Comparative Examples 1 to 6
Cleansing compositions having the compositions shown in Table 1 were prepared, and the viscosities were measured. The speed of rinsing from skin, the time required to suppress squeaking caused by combing force, and the ease of rinsing in a hair washing test were evaluated. The results are also shown in Table 1.

(Production method)
Components (A) to (F) were added to water heated to 80° C. and stirred until uniform. Other components were added as necessary and stirred until uniform, and then cooled to 25° C. to obtain a cleaning composition.

(Evaluation method)
(1) Viscosity:
The viscosity of each cleaning composition was measured using a BM type viscometer with a rotor No. 3 at 30° C. and rotating at 12 rpm for 1 minute.

(2) Quick rinsing of skin:
2 mL of each cleansing composition was taken in the hand, tap water was added, lathered with both hands, and the area between the elbow and wrist of the forearm was lightly sprayed with water and massaged for 20 seconds.The area between the elbow and wrist was then rinsed with tap water for 20 seconds, and the speed of rinsing the skin was evaluated.
The evaluation was based on a four-point scale, with Kao Soap White S being 4 (fast) and Kao Essential Shampoo cS being 1 (slow).
The average of the evaluations by the five panelists was calculated and used as an evaluation of the rinsing speed.

(3) Squeak suppression time due to combing force:
A hair tress with a length of 30 cm and a density of 170 hairs/ ^cm2 was prepared in a 6 cm x 6 cm square area and lightly wetted with tap water. 1 g of each detergent composition was applied to the hair, and after sufficient lathering, it was set in a DCF measuring device (combing force) described in a literature (J. Soc. Cosmet. Chem. Japan. Vol. 27, No. 1, P11-13 1993). While applying a shower (1 L/min) to the hair, the hair was rinsed by combing it with four fingers excluding the thumb. The time (seconds) until the load on the hair during rinsing exceeded 300 g was measured and recorded as the squeak suppression time.

(4) Rinseability in hair washing test:
The scalp was lightly wetted with tap water, 3 mL of each cleansing composition was applied to the hands, and massaged with both hands for 30 seconds. Thereafter, the scalp was rinsed with tap water, and the ease of rinsing was evaluated.
The evaluation criteria were 4 levels, with Kao Essential Shampoo cS being 5 (easy to rinse) and Kao Men's Biore Deodorant Body Wash being 1 (difficult to rinse).
The average of the evaluations by the five panelists was calculated and used as an evaluation of the ease of rinsing.

Claims (11)

The following components (A) and (B):
(A) one or more selected from N-acyl neutral amino acids, N-acyltaurines, and salts thereof;
(B) A cleaning composition containing a natural polysaccharide-based cationic polymer, the viscosity of a 1% by mass aqueous solution at 25°C being 1,000 mPa·s or less and the degree of cationization being 2% or more. The cleaning composition according to claim 1, containing 0.5 to 10 mass % of component (A). The cleaning composition according to claim 1 or 2, wherein component (B) contains one or more selected from cationic guar gum, cationic cellulose, and cationic starch. The cleaning composition according to any one of claims 1 to 3, containing 0.1 to 5 mass % of component (B). The cleaning composition according to any one of claims 1 to 4, wherein component (A) contains one or more selected from potassium cocoyl glycine, sodium methyl cocoyl taurate, and sodium methyl cocoyl alanine. Furthermore, (C) general formula (1):
R ¹ -O-(CH ₂ CH ₂ O) m -SO ₃ Y ¹ (1)
(In the formula, ^R1 represents an alkyl group or alkenyl group having 8 to 22 carbon atoms, m represents a number from 0 to 20, and the average of m is 0 to 5, and ^Y1 represents a hydrogen atom, an alkali metal, an alkaline earth metal, ammonium, an organic ammonium, or a basic amino acid.)
The cleaning composition according to any one of claims 1 to 5, which contains an alkyl sulfate represented by the following formula (I) or a polyoxyethylene alkyl sulfate, or a salt thereof. Furthermore, (D) a compound represented by general formula (2):
R ² -O-(CH ₂ CH ₂ O) n -CH ₂ -COOY ² (2)
(In the formula, ^R2 represents an alkyl group having 4 to 22 carbon atoms, n represents a number from 0 to 20, and ^Y2 represents a hydrogen atom, an alkali metal, an alkaline earth metal, ammonium, an organic ammonium, or a basic amino acid.)
The cleaning composition according to any one of claims 1 to 6, comprising an alkyl ether carboxylic acid represented by the following formula (I) or a salt thereof. The cleaning composition according to any one of claims 1 to 7 further contains (E) an amphoteric surfactant. The cleaning composition according to any one of claims 1 to 8, further comprising (F) a nonionic surfactant. The cleanser composition according to any one of claims 1 to 9, which is a cleanser for the whole body, including the body and hair. A method for washing the whole body, comprising applying the cleansing composition according to any one of claims 1 to 9 to the body and hair, washing the body and hair, and then rinsing the body and hair.