Method for evaluating cleaning component or cleaning composition, substrate for evaluation, method for screening cleaning component, method for producing cleaning composition, cleaning composition, cleaning composition for skin and / or hair, and method for cleaning skin and / or hair

Abstract

To provide a method for evaluating a cleaning component or a cleaning composition with high reliability even when temperature conditions under which the cleaning component or the cleaning composition is used are different. To provide a method for screening a cleaning component related to the evaluation method, a method for producing a cleaning composition, a cleaning composition, and a base material for evaluation. To provide a cleaning composition for skin and / or hair having high sebum removal efficiency, and to provide a method for cleaning skin and / or hair using the same.SOLUTION: The method for evaluating the removing efficiency of sebum by a cleaning component or a cleaning composition comprises using the cleaning component or the cleaning composition for a test body in which sebum is adhered to a base material having a contact angle of water on the surface of ≥50° and ≤110°. The base material for evaluation, the method for screening the cleaning component, the method for producing the cleaning composition, and the cleaning composition are provided. This cleansing composition for the skin and / or the hair is obtained by formulating a specific surfactant and is used in a form of being washed away with water at ≤ 35 °C.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a method for evaluating a cleaning ingredient or cleaning composition, a substrate for evaluation, a method for screening a cleaning ingredient, a method for producing a cleaning composition, a cleaning composition, a cleaning composition for skin and / or hair, and a method for cleaning skin and / or hair. [Background technology]

[0002] When evaluating a cleaning ingredient or cleaning composition, it is common to actually use it on an object to be cleaned, such as the human body, to evaluate it. However, since it may be difficult to secure an object to be cleaned, the cleaning ingredient or cleaning composition may be evaluated regardless of the object to be cleaned.

[0003] For example, in Patent Document 1 (JP 2020-111519 A), when evaluating the sebum removal efficiency of a foam hair wash composition, a slide glass coated with artificial sebum is used to perform an evaluation regardless of the object being washed, such as hair. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2020-111519 Summary of the Invention [Problem to be solved by the invention]

[0005] When evaluating cleaning ingredients or cleaning compositions regardless of the object to be cleaned, it is desirable to perform a highly reliable evaluation that provides evaluation results similar to those obtained when the cleaning ingredients or cleaning compositions are actually used on the object to be cleaned, even if the temperature conditions under which the cleaning ingredients or cleaning compositions are used are different.

[0006] In view of the above circumstances, an object of the present invention is to provide a method for evaluating a cleaning component or cleaning composition that is highly reliable even when the temperature conditions under which the cleaning component or cleaning composition is used are different, a method for screening a cleaning component using the evaluation method, a method for producing a cleaning composition, and a cleaning composition. In view of the above circumstances, another object of the present invention is to provide a substrate for evaluation that enables highly reliable evaluation even when the temperature conditions under which the cleaning ingredients or cleaning compositions are used are different. In view of the above circumstances, it is yet another object of the present invention to provide a cleansing composition for skin and / or hair that has high sebum removal efficiency even when used at low temperature conditions, and a method for cleansing skin and / or hair using the cleansing composition for skin and / or hair. [Means for solving the problem]

[0007] The present inventors have discovered that when a cleansing component or cleansing composition is actually used on the skin or hair of a subject, the sebum removal efficiency varies depending on the temperature conditions under which the cleansing component or cleansing composition is used. Based on this discovery, the present inventors have conducted extensive research into an evaluation method that can provide highly reproducible evaluation results that are close to the evaluation results of the sebum removal efficiency when the cleansing component or cleansing composition is used on a subject under different temperature conditions.

[0008] As a result of the above investigation, the present inventors have found that it is useful to use, instead of a subject's skin or hair, a test specimen having sebum attached to a substrate whose surface has a water contact angle of 50° or more and 110° or less as the object to be cleaned. Based on the above findings, the present inventors have conceived of the method for evaluating cleansing ingredients or cleansing compositions, the substrate for evaluation, the method for screening cleansing ingredients, the method for producing cleansing compositions, the cleansing composition, the cleansing composition for skin and / or hair, and the method for cleansing skin and / or hair according to the present invention.

[0009] The present invention includes the following inventions [1] to

[15] .

[0010] The method for evaluating a cleaning ingredient or cleaning composition in [1] involves using the cleaning ingredient or cleaning composition on a test specimen having a substrate with a water contact angle of 50° or more and 110° or less on the surface to which sebum has adhered, and evaluating the sebum removal efficiency of the cleaning ingredient or cleaning composition.

[0011] The method for evaluating a cleaning ingredient or cleaning composition according to [2] is the method for evaluating a cleaning ingredient or cleaning composition according to [1], wherein the substrate contains at least one of a protein and a synthetic resin.

[0012] The method for evaluating a cleaning ingredient or cleaning composition according to [3] is the method for evaluating a cleaning ingredient or cleaning composition according to [2], in which collagen is included as the protein.

[0013] The method for evaluating a cleaning ingredient or cleaning composition in [4] is the method for evaluating a cleaning ingredient or cleaning composition in either [2] or [3], wherein the synthetic resin includes one or more selected from the group consisting of polycarbonate resin, silicone elastomer resin, polypropylene resin, acrylic resin, nylon resin, polyethylene resin, acrylonitrile butadiene styrene resin, polyethylene terephthalate resin, and polystyrene resin.

[0014] The method for evaluating a cleaning ingredient or cleaning composition according to [5] is the method for evaluating a cleaning ingredient or cleaning composition according to any one of [1] to [4], wherein the cleaning composition is a cleaning composition for skin and / or hair, and the method for evaluating the cleaning ingredient or cleaning composition is a method for evaluating a cleaning composition.

[0015] The evaluation substrate [6] is a substrate for evaluation used to evaluate the sebum removal efficiency of a cleaning ingredient or cleaning composition, and is used with sebum attached, and has a water contact angle of 50° or more and 110° or less on its surface.

[0016] The screening method [7] uses any one of the methods for evaluating a cleaning ingredient or cleaning composition [1] to [4] above, wherein the method for evaluating a cleaning ingredient or cleaning composition is a method for evaluating a cleaning ingredient, and is used to screen cleaning ingredients to be blended into a cleaning composition.

[0017] The method for producing a cleaning composition in [8] involves blending cleaning components screened by the screening method in [7] above.

[0018] The cleaning composition [9] contains cleaning components screened by the screening method [7] above.

[0019]

[10] The cleansing composition for skin and / or hair contains one or more compounds selected from the group consisting of alkyl ether carboxylic acids or salts thereof, and alkyl sulfosuccinic acids or salts thereof, and is used in a manner that it is rinsed off with water at 35°C or below.

[0020] The cleansing composition for skin and / or hair

[11] is the cleansing composition for skin and / or hair

[10] , in which the one or more selected from the group consisting of alkyl ether carboxylic acids or salts thereof, and alkyl sulfosuccinic acids or salts thereof are blended with one or more alkyl ether carboxylic acids or salts thereof, and one or more alkyl sulfosuccinic acids or salts thereof.

[0021] The cleansing composition for skin and / or hair

[12] is the cleansing composition for skin and / or hair of either

[10] or

[11] , wherein the alkyl ether carboxylic acid or its salt is polyoxyethylene lauryl ether carboxylic acid or its salt, and the alkyl sulfosuccinic acid or its salt is polyoxyethylene lauryl sulfosuccinate.

[0022] The method for washing skin and / or hair according to

[13] is a method for washing skin and / or hair, which comprises using a cleansing composition for skin and / or hair containing one or more compounds selected from the group consisting of alkyl ether carboxylic acids or salts thereof, and alkyl sulfosuccinic acids or salts thereof, and rinsing the skin and / or hair with water at 35°C or below.

[0023] The method for washing skin and / or hair according to

[14] is the method for washing skin and / or hair according to

[13] , wherein the cleansing composition for skin and / or hair contains one or more alkyl ether carboxylic acids or salts thereof, and one or more alkyl sulfosuccinic acids or salts thereof, as the one or more selected from the group consisting of alkyl ether carboxylic acids or salts thereof, and alkyl sulfosuccinic acids or salts thereof.

[0024] The skin and / or hair cleansing method

[15] is the skin and / or hair cleansing method of either

[13] or

[14] , wherein the alkyl ether carboxylic acid or its salt is polyoxyethylene lauryl ether carboxylic acid or its salt, and the alkyl sulfosuccinic acid or its salt is polyoxyethylene lauryl sulfosuccinate. [Effects of the Invention]

[0025] According to the method for evaluating a cleaning component or cleaning composition of the present invention, it is possible to obtain highly reliable evaluation results regarding the sebum removal efficiency of a cleaning component or cleaning composition, even when the temperature conditions under which the cleaning component or cleaning composition is used are different. The evaluation substrate according to the present invention makes it possible to perform a highly reliable evaluation of the sebum removal efficiency of a cleansing component or cleansing composition. According to the screening method of the present invention, the reliability of the screening results for cleaning ingredients to be incorporated into cleaning compositions is increased. According to the production method of the present invention, a cleansing composition containing cleansing ingredients that have been evaluated with high reliability for their sebum removal efficiency can be obtained. The cleaning composition of the present invention, which contains cleaning components screened by the above-mentioned screening method, can be provided with the desired sebum removal efficiency according to the conditions at the time of screening. The cleansing composition for skin and / or hair according to the present invention has excellent sebum removal efficiency even when used in a manner in which the cleansing composition is rinsed off with water at 35°C or lower. According to the method for cleansing skin and / or hair of the present invention, the skin and / or hair are cleansed using a cleansing composition for skin and / or hair, and even when the cleansing composition is rinsed with water at 35°C or lower, the method has excellent sebum removal efficiency. [Brief explanation of the drawings]

[0026] [Figure 1] FIG. 1 is a diagram showing the appearance of a reference example after cleaning with 40°C water, a diluted solution of a cleaning composition at 40°C, and a diluted solution of a cleaning composition at 20°C. [Figure 2] FIG. 1 shows the results of an artificial sebum removal test (part 2). [Figure 3] FIG. 1 shows the results of an artificial sebum removal test (part 3). DETAILED DESCRIPTION OF THE INVENTION

[0027] Hereinafter, a method for evaluating a cleaning ingredient or cleaning composition, a substrate for evaluation, a method for screening a cleaning ingredient, a method for producing a cleaning composition, a cleaning composition, and a cleaning composition for skin and / or hair according to one embodiment of the present invention (hereinafter sometimes referred to as "this embodiment") will be described using examples, but these do not particularly limit the present invention.

[0028] The method for evaluating a cleaning ingredient or cleaning composition, the substrate for evaluation, the method for screening a cleaning ingredient, the method for producing a cleaning composition, the cleaning composition, and the cleaning composition for skin and / or hair are all intended for cosmetic purposes and do not constitute medical procedures. In the present invention, the term "and / or" refers to both or either one of them.

[0029] (1) Evaluation method for cleaning ingredients or cleaning compositions The method for evaluating a cleaning ingredient or cleaning composition of this embodiment (hereinafter referred to as the "evaluation method of this embodiment") involves using the cleaning ingredient or cleaning composition on a test specimen having sebum attached to a substrate with a water contact angle of 50° or more and 110° or less, and evaluating the sebum removal efficiency of the cleaning ingredient or cleaning composition. According to the evaluation method of this embodiment, by using the cleaning ingredient or cleaning composition on a test specimen having sebum attached to the substrate, it is possible to evaluate the sebum removal efficiency of the cleaning ingredient or cleaning composition. Furthermore, by using the evaluation method of this embodiment, it is possible to evaluate the sebum removal efficiency of the cleaning ingredient or cleaning composition regardless of human skin or hair. Furthermore, evaluation using a substrate with a water contact angle of 50° or more and 110° or less on the surface is likely to yield highly reproducible evaluation results that are similar to the evaluation results obtained when the sebum removal efficiency of the cleaning ingredient or cleaning composition is evaluated on human skin or hair in the presence of sebum. Therefore, the evaluation method of this embodiment makes it possible to obtain highly reliable evaluation results for the sebum removal efficiency of the cleaning ingredient or cleaning composition.

[0030] In the evaluation method of this embodiment, when comparing the sebum removal efficiencies of different cleansing components, it is preferable to use common conditions such as the type of sebum used in the evaluation method, the amount of sebum, the method of application if sebum is applied to a substrate, the method of use of the cleansing component or cleansing composition, the temperature environment during use of the cleansing component, etc. Also, when comparing the sebum removal efficiencies of different cleansing compositions, it is preferable to use common conditions, as in the case of comparing the sebum removal efficiencies of different cleansing components.

[0031] The substrate is composed of something other than human skin and hair. This eliminates the need to secure human subjects, making it easier to increase the number of evaluation targets. Furthermore, while it is difficult to reduce the individual differences in human skin or hair, it is easy to reduce the individual differences in the substrate, making it possible to perform evaluations using substrates with little individual difference. Here, examples of individual differences include differences in the contact angle of water on the surface of the substrate.

[0032] The contact angle of water on the surface of the substrate is the contact angle of water when no sebum is applied to the substrate. The contact angle of water can be measured by the θ / 2 method using a contact angle meter (for example, CAX-150 manufactured by Kyowa Interface Science Co., Ltd.) as the value 1 second after contact with a water droplet.

[0033] From the viewpoint of enabling the sebum removal efficiency of the cleansing component or cleansing composition to approach that of human skin, the water contact angle of the substrate is 50° or more, preferably 55° or more, more preferably 60° or more, and even more preferably 65° or more. From the same viewpoint, the water contact angle of the substrate is 110° or less, preferably 100° or less, more preferably 95° or less, and even more preferably 90° or less.

[0034] Such a substrate preferably contains at least one of a protein and a synthetic resin, and more preferably contains a protein, since the sebum removal efficiency when rinsed with water at 40°C without using a cleansing component or cleansing composition is similar to that of skin or hair, and the reliability of the evaluation can be further improved.

[0035] Proteins are polymers or oligomers of amino acids polymerized through peptide bonds. The protein may be, for example, one or more selected from the group consisting of collagen, keratin, elastin, laminin, fibronectin, gelatin, albumin, ovalbumin, casein, transferrin, globulin, fibroin, fibrin, sericin, zein, gluten, gliadin, glutenin, protamine, plant-derived proteins (soybean protein, rice protein, etc.), honey protein, royal jelly protein, yeast protein, whey protein, vitronectin, polylysine, polyglutamic acid, and polyaspartic acid. Among proteins, proteins containing collagen as the main component (the component with the highest weight percentage; the same applies below) or proteins consisting only of collagen are preferred, since they are more likely to produce results similar to those of human skin when removing sebum using a cleansing component or cleansing composition. The collagen is not particularly limited, and may be, for example, commercially available collagen casing obtained from cows, pigs, or the like.

[0036] Synthetic resins are resins artificially synthesized from monomers. As this synthetic resin, for example, one or more types selected from the group consisting of polycarbonate resin, silicone elastomer resin, polypropylene resin, acrylic resin, nylon resin, polyethylene resin, acrylonitrile butadiene styrene resin, polyethylene terephthalate resin, and polystyrene resin can be used. Among synthetic resins, synthetic resins containing polycarbonate resin as a main component or synthetic resins consisting solely of polycarbonate resin are preferred, since they tend to provide results similar to those on human skin when removing sebum with a cleansing component or cleansing composition.

[0037] The shape of the substrate is not particularly limited, but from the viewpoint of enabling a highly reliable evaluation corresponding to the evaluation of the sebum removal efficiency of a cleansing component or cleansing composition on human skin or hair, it is preferable that the shape of the substrate has a substantially flat surface, for example, a plate shape.

[0038] The sebum is not particularly limited, and may be, for example, a known artificial sebum or sebum collected from a human. From the viewpoint of ease of acquisition, it is preferable to use artificial sebum as the sebum. The artificial sebum may be blended with, for example, macadamia nut oil, olive oil, isocetyl stearate, palmitic acid, oleic acid, stearic acid, squalene, etc. The sebum adhered to the substrate may be blended with a known coloring agent in order to improve the visibility of the sebum removal efficiency.

[0039] The test specimen having sebum attached to the substrate may be, for example, a test specimen obtained by applying sebum to the substrate, or a test specimen obtained from a substrate and sebum combined together. The shape of the test specimen may be the same as that of the substrate.

[0040] The skin is human skin, including, for example, the scalp, facial skin, and skin on the rest of the body, including the arms and legs.

[0041] The cleansing component in the evaluation method of the present embodiment is not particularly limited, and may be a cleansing component used for cleaning skin or hair. Examples of the cleansing component include anionic surfactants, nonionic surfactants, cationic surfactants, and amphoteric surfactants. In addition, the cleansing component may be, for example, an oily component incorporated into a composition for cleansing sebum.

[0042] Examples of the anionic surfactant include carboxylic acid-based anionic surfactants, sulfonic acid-based anionic surfactants, sulfate-based anionic surfactants, and phosphate-based anionic surfactants. Examples of the nonionic surfactants include esters of polyhydric alcohols and fatty acids, alkyl alkanolamides, polyoxyalkylene alkyl ethers, polyoxyethylene polyoxypropylene alkyl ethers, polyoxyalkylene fatty acid esters, polyoxyalkylene sorbitan fatty acid esters, polyoxyalkylene sorbitol fatty acid esters, polyoxyalkylene glycerin fatty acid esters, alkyl glucosides, sucrose fatty acid esters, and polyoxyalkylene hydrogenated castor oil. Examples of the cationic surfactant include alkylamine salts, fatty acid amide amine salts, and quaternary ammonium salts. Examples of the amphoteric surfactant include amidoalkylbetaine amphoteric surfactants, imidazoline amphoteric surfactants, alkylbetaine amphoteric surfactants, sulfobetaine amphoteric surfactants, and amidoamine oxide amphoteric surfactants.

[0043] When using a cleansing component to remove sebum from a test specimen, for example, the cleansing component or a diluted cleansing component obtained by diluting the cleansing component with a solvent (e.g., water, alcohol, etc.) at a predetermined ratio can be used. A hydrophilic or hydrophobic solvent can be selected as the solvent depending on the type of cleansing component. The cleansing component or diluted cleansing component may be applied to the test specimen by immersion, application, spraying, pouring, or the like for a predetermined period of time. The cleansing component or diluted cleansing component applied to the test specimen may be in the form of, for example, a liquid, gel, emulsion, or foam.

[0044] The cleansing composition in the evaluation method of this embodiment may be, for example, a cleansing composition for the human body. Furthermore, the cleansing composition for the human body may be a cleansing composition for the skin and / or hair, or a cleansing composition for the whole body. In particular, from the viewpoint of cleansing areas where sebum easily adheres, the cleansing composition in the evaluation method of this embodiment is preferably a cleansing composition for the scalp and / or hair, or a cleansing composition for the skin excluding the scalp.

[0045] The cleaning composition used in the evaluation method of this embodiment may contain components that can be incorporated into cleaning compositions for the human body, such as water, surfactants, polymeric compounds such as cationic polymers, oils, higher fatty acids or salts thereof, lower alcohols, polyhydric alcohols, sugars, amino acids, animal and plant extracts, inorganic compounds, acids, alkalis, fragrances, preservatives, sequestering agents, and ultraviolet absorbers.

[0046] The cleaning composition in the evaluation method of this embodiment may contain water. The amount of water in the cleaning composition in the evaluation method of this embodiment may be, for example, 20% by mass or more, or 70% by mass or more.

[0047] Furthermore, the cleaning composition in the evaluation method of this embodiment may be used in a manner that allows it to be rinsed off with water at 35° C. or lower, or may be used in a manner that allows it to be rinsed off with water at 30° C. or lower, or may be used in a manner that allows it to be rinsed off with water at 25° C. or lower, or may be used in a manner that allows it to be rinsed off with water at 20° C. or lower. Note that the cleaning composition in the evaluation method of this embodiment may be used in a manner that allows it to be rinsed off with water at 15° C. or higher, for example. In the case of a cleaning composition that is used in a manner that allows it to be rinsed off with water at a relatively low temperature, it may be difficult to secure test subjects. However, even in such a case, by performing the evaluation using the above-mentioned substrate, it is not necessary to secure test subjects.

[0048] The cleansing composition for the scalp and / or hair is not particularly limited, but examples thereof include hair shampoos and scalp cleansing agents. The cleansing composition for the scalp and / or hair may be any known composition.

[0049] Cleansing compositions for skin other than the scalp are not particularly limited, but examples include body soap, body shampoo, shower gel, hand soap, hand wash, facial cleansers such as facial cleansers, cleansing agents, and makeup removers.

[0050] When using a cleaning composition to remove sebum from a test specimen, for example, the cleaning composition or a diluted cleaning composition obtained by diluting the cleaning composition with a solvent (e.g., water, alcohol, etc.) at a predetermined ratio can be used. A hydrophilic or hydrophobic solvent can be selected and used as the solvent depending on the composition of the cleaning composition. The cleaning composition or diluted cleaning composition can be applied to the test specimen by immersion for a predetermined period of time, coating, spraying, pouring, or the like. The cleaning composition or diluted cleaning composition applied to the test specimen may be in the form of, for example, a liquid, gel, emulsion, or foam. The cleaning composition or diluted cleaning composition applied to the test specimen may also be in the form of an aerosol filled with the cleaning composition or diluted cleaning composition and a propellant (LPG, isopentane, carbon dioxide, etc.).

[0051] In the evaluation method of this embodiment, the sebum removal efficiency of the cleaning ingredients or cleaning composition can be evaluated based on the amount of sebum remaining on the test specimen after using the cleaning ingredients or cleaning composition, relative to the amount of sebum on the test specimen before using the cleaning ingredients or cleaning composition. For example, it can be evaluated that the greater the amount of sebum remaining on the test specimen, the lower the sebum removal efficiency of the cleansing component or cleansing composition, and the smaller the amount of sebum remaining on the test specimen, the higher the sebum removal efficiency of the cleansing component or cleansing composition.In addition, in the evaluation, the level of sebum removal efficiency of the cleansing component or cleansing composition may be evaluated by comparing it with a predetermined standard of sebum removal efficiency.Here, the standard of the predetermined sebum removal efficiency may be the sebum removal efficiency of a predetermined cleansing component or cleansing composition.In addition, in the evaluation, by using multiple cleansing components or cleansing compositions whose sebum removal efficiency is unknown, the level of sebum removal efficiency of these cleansing components or cleansing compositions may be evaluated.

[0052] The evaluation method of this embodiment may involve applying a cleaning ingredient or cleaning composition to a test specimen having sebum attached to a substrate whose surface has a water contact angle of 50° to 110°, rinsing the cleaning ingredient or cleaning composition with water at 35°C or lower, and evaluating the sebum removal efficiency of the cleaning ingredient or cleaning composition. The water at 35°C or lower may be water at 30°C or lower, water at 25°C or lower, or water at 20°C or lower. The water at 35°C or lower may also be water at 15°C to 35°C.

[0053] (2) Substrate for evaluation The evaluation substrate of this embodiment is used with sebum attached, and is an evaluation substrate for evaluating the sebum removal efficiency of a cleaning ingredient or cleaning composition, with a water contact angle on the surface of 50° or more and 110° or less.

[0054] The substrate for evaluation in this embodiment can be the substrate described above in "(1) Method for evaluating cleaning components or cleaning compositions." According to the evaluation substrate of this embodiment, by using a cleaning ingredient or a cleaning composition on a test specimen obtained by applying sebum as described above in "(1) Method for evaluating a cleaning ingredient or a cleaning composition," it is possible to perform a highly reliable evaluation of the sebum removal efficiency of the cleaning ingredient or cleaning composition, regardless of human skin or hair. The evaluation substrate of this embodiment may be used to evaluate the sebum removal efficiency of a cleansing component or cleansing composition by applying a cleansing component or cleansing composition to a test specimen obtained by applying sebum to the test specimen, and then rinsing the cleansing component or cleansing composition with water at 35°C or lower.

[0055] (3) Screening method The screening method of this embodiment is a method for screening cleaning ingredients to be incorporated into cleaning compositions using the above-mentioned "(1) Method for evaluating cleaning ingredients or cleaning compositions." The screening method of this embodiment increases the reliability of the screening results for cleaning ingredients to be incorporated into cleaning compositions.

[0056] In addition, in the screening method of this embodiment, it is possible to screen for cleansing components that have a sebum removal efficiency that exceeds a predetermined standard for sebum removal efficiency and have excellent cleansing power, or it is possible to screen for cleansing components that have a sebum removal efficiency that is below the predetermined standard for sebum removal efficiency and have reduced cleansing power.

[0057] (4) Method for producing cleaning composition The method for producing a cleaning composition of this embodiment is a method for producing a cleaning composition that incorporates a cleaning component screened by the above-mentioned "(3) screening method." The production method of this embodiment allows for the production of a cleaning composition that incorporates a cleaning component whose sebum removal efficiency has been evaluated with high reliability.

[0058] The method for producing a cleaning composition of this embodiment may include, for example, step (I) of screening cleaning components by the above-mentioned "(3) screening method," and step (II) of blending the cleaning components screened in step (I) into a cleaning composition to produce a cleaning composition. In step (II), the cleaning composition may contain, in addition to the screened cleaning components, the cleaning composition components described in the above "(1) Method for evaluating cleaning components or cleaning compositions."

[0059] (5) Cleaning composition The cleaning composition of this embodiment includes a cleaning composition of a first embodiment and a cleaning composition of a second embodiment, both of which will be described below.

[0060] (5-1) Cleaning composition of the first embodiment The cleaning composition of the first embodiment is a cleaning composition containing cleaning ingredients screened by the above-mentioned "(3) screening method." The cleaning composition of the first embodiment contains cleaning ingredients whose sebum removal efficiency has been evaluated with high reliability according to the screening conditions, and therefore, even when used on human skin or hair, it is possible to achieve sebum removal efficiency according to the screening conditions. For example, in the above-mentioned "(3) screening method," a cleansing component having a sebum removal efficiency that exceeds a predetermined standard for sebum removal efficiency is screened, and when that cleansing component is blended into a cleansing composition, the cleansing composition is likely to exhibit a sebum removal efficiency that exceeds the predetermined standard for sebum removal efficiency when used on skin. Also, for example, in the above-mentioned "(3) screening method," a cleansing component having a sebum removal efficiency that is below the predetermined standard for sebum removal efficiency is screened, and when that cleansing component is blended into a cleansing composition, the cleansing composition is likely to exhibit a sebum removal efficiency that is below the predetermined standard for sebum removal efficiency when used on skin.

[0061] The cleaning composition of the first embodiment may be one produced by the above-mentioned "(4) Method for producing a cleaning composition." The cleaning composition of the first embodiment may contain, as necessary, components other than the cleaning components screened by the above-mentioned "(3) Screening method" (for example, components contained in the cleaning composition described above in "(1) Method for evaluating a cleaning component or a cleaning composition").

[0062] The cleaning composition of the first embodiment may be used in a manner to be rinsed off with water of 35° C. or lower, or may be used in a manner to be rinsed off with water of 30° C. or lower, or may be used in a manner to be rinsed off with water of 25° C. or lower, or may be used in a manner to be rinsed off with water of 20° C. or lower. The cleaning composition may be used in a manner to be rinsed off with water of 15° C. or higher, for example.

[0063] The cleansing composition of the first embodiment may be a cleansing composition for skin and / or hair used to remove sebum, for example, by rinsing with water at 35°C or lower.

[0064] (5-2) Cleaning composition of the second embodiment The cleaning composition of the second embodiment is a skin and / or hair cleaning composition containing one or more compounds selected from the group consisting of alkyl ether carboxylic acids or salts thereof, and alkyl sulfosuccinic acids or salts thereof, and is used in a manner that the composition is rinsed off with water at 35° C. or below. The cleaning composition of the second embodiment has excellent sebum removal efficiency, even when used in a manner that the composition is rinsed off with water at 35° C. or below. Therefore, when the cleaning composition is used in summer or in regions with high temperatures, for example, it is possible to reduce the discomfort caused by using hot water above 35° C. when rinsing off the cleaning composition while maintaining good sebum removal efficiency.

[0065] The cleaning composition of the second embodiment preferably contains one or more alkyl ether carboxylic acids or salts thereof, and one or more alkyl sulfosuccinic acids or salts thereof, from the viewpoint of excellent sebum removal efficiency and excellent foam volume during cleaning, even when used in a manner that involves rinsing with water at 35°C or below.

[0066] Sebum adhering to human skin or hair has the property of easily maintaining its fluidity in a temperature environment around body temperature, and therefore tends to be easily removed in a temperature environment around body temperature. In contrast, the cleansing composition of the second embodiment has excellent sebum removal efficiency even when used in a manner of rinsing with water at a temperature lower than around body temperature, where fluidity is difficult to maintain.

[0067] The cleaning composition of the second embodiment is used in an aspect in which it is rinsed off with water of 35° C. or less, and may be used in an aspect in which it is rinsed off with water of 30° C. or less, or may be used in an aspect in which it is rinsed off with water of 25° C. or less, or may be used in an aspect in which it is rinsed off with water of 20° C. or less. Although not particularly limited, for example, the cleaning composition of the second embodiment may be used in an aspect in which it is rinsed off with water of 15° C. or more.

[0068] The cleansing composition of the second embodiment may be a cleansing composition for skin and / or hair used to remove sebum, for example, by rinsing with water at 35°C or lower.

[0069] In the cleaning composition of the second embodiment, from the viewpoint of excellent sebum removal efficiency even when rinsed with water at 35°C or below, it is preferable that the one or more selected from the group consisting of alkyl ether carboxylic acids or salts thereof, and alkyl sulfosuccinic acids or salts thereof is at least one selected from the group consisting of polyoxyethylene lauryl ether carboxylic acids or salts thereof, and polyoxyethylene lauryl sulfosuccinate.In addition to the above viewpoint, from the viewpoint of excellent foam volume during cleaning, it is more preferable that the cleaning composition contains one or more polyoxyethylene lauryl ether carboxylic acids or salts thereof, and one or more polyoxyethylene lauryl sulfosuccinate.

[0070] As the alkyl ether carboxylic acid or a salt thereof, for example, one represented by the following formula (1) can be used. R a -O-(CH2CH2O)n-CH2-COOX a (1) (R a represents a hydrocarbon group having 12 to 24 carbon atoms. The hydrocarbon group having 12 to 24 carbon atoms may be linear or branched, and may be saturated or unsaturated. X arepresents hydrogen, an alkali metal, an alkaline earth metal, ammonium, an alkanolamine, or a basic amino acid. n represents the average number of moles of oxyethylene added and is 0.5 to 20.

[0071] As the alkyl ether carboxylic acid or its salt, in order to achieve a more excellent sebum removal efficiency even when rinsing with water at 35°C or less, those in which n is 2 or more in the above formula (1) are preferred, those in which n is 4 or more are more preferred, and those in which n is 10 or more are even more preferred.

[0072] Examples of polyoxyethylene lauryl ether carboxylic acid or a salt thereof include sodium polyoxyethylene lauryl ether carboxylate, potassium polyoxyethylene lauryl ether carboxylate, etc. The average number of moles of polyoxyethylene added in the polyoxyethylene lauryl ether carboxylic acid or a salt thereof is preferably, for example, 2 or more and 20 or less, and among these, sodium laureth-3 carboxylate, sodium laureth-4 carboxylate, sodium laureth-6 carboxylate, and sodium laureth-11 carboxylate are preferred, sodium laureth-11 carboxylate and sodium laureth-6 carboxylate are more preferred, and sodium laureth-11 carboxylate is even more preferred.

[0073] As the alkylsulfosuccinic acid or a salt thereof, for example, one represented by the following formula (2) can be used. R b -O-(CH2CH2O) m -CO-CH(SO3X b )-CH2-COOX c (2) (R b represents a hydrocarbon group having 12 to 24 carbon atoms. The hydrocarbon group having 12 to 24 carbon atoms may be linear or branched, and may be saturated or unsaturated. X b , X c represents hydrogen, an alkali metal, an alkaline earth metal, ammonium, an alkanolamine, or a basic amino acid. b , X cmay be the same or different. m represents the average number of moles of oxyethylene added and is 0 or more and 20 or less.

[0074] An example of polyoxyethylene lauryl sulfosuccinate is polyoxyethylene lauryl sulfosuccinate disodium (labeled ingredient name in cosmetics: laureth sulfosuccinate disodium). The average number of moles of polyoxyethylene added in polyoxyethylene lauryl sulfosuccinate may be, for example, 0.5 or more and 20 or less, or 2 or more and 6 or less.

[0075] The amount of one or more selected from the group consisting of alkyl ether carboxylic acids or salts thereof, and alkyl sulfosuccinic acids or salts thereof in the cleaning composition of the second embodiment is preferably 1% by mass or more, more preferably 3% by mass or more, and more preferably 5% by mass or more, from the viewpoint of excellent sebum removal efficiency. The upper limit of the amount of one or more selected from the group consisting of alkyl ether carboxylic acids or salts thereof, and alkyl sulfosuccinic acids or salts thereof in the cleaning composition of the second embodiment is not particularly limited, but is, for example, 35% by mass.

[0076] The cleaning composition of the second embodiment optionally contains known components that can be incorporated into cleaning compositions in addition to the alkyl ether carboxylic acid or its salt and the alkyl sulfosuccinic acid or its salt. These optional components may be, for example, the components that can be incorporated into cleaning compositions described above in "(1) Method for evaluating cleaning components or cleaning compositions."

[0077] The cleansing composition of the second embodiment is a cleansing composition for skin and / or hair. In particular, from the viewpoint of cleansing areas where sebum easily adheres, the cleansing composition of the second embodiment is preferably a cleansing composition for scalp and / or hair, or a cleansing composition for skin other than the scalp.

[0078] The cleansing composition for the scalp and / or hair is not particularly limited, but examples thereof include hair shampoos and scalp cleansing agents. Note that, when hair that has been subjected to an oxidation dye treatment is washed with a hair cleansing composition such as a hair shampoo and then rinsed with water at 40° C. or higher, the hair may become more faded. For this reason, the hair cleansing composition such as a hair shampoo is preferably a hair cleansing composition for inhibiting fade that is used in a manner that rinses with water at 35° C. or lower.

[0079] Cleansing compositions for skin other than the scalp are not particularly limited, but examples include body soap, body shampoo, shower gel, hand soap, hand wash, facial cleansers such as facial cleansers, cleansing agents, and makeup removers.

[0080] The cleaning composition of the second embodiment can be in the form of a product in which, for example, the fact that it is used in a mode in which it is rinsed off with water at 35° C. or below, or the effect of its excellent sebum removal even in a mode in which it is rinsed off with water at 35° C. or below, is indicated on the package, pamphlet, instruction manual, or other explanatory materials. The water at 35° C. or below may be water at 30° C. or below, water at 25° C. or below, or water at 20° C. or below.

[0081] The cleaning composition of the second embodiment can be produced by blending one or more compounds selected from the group consisting of an alkyl ether carboxylic acid or a salt thereof, and an alkyl sulfosuccinic acid or a salt thereof using a known method for producing a cleaning composition. The cleaning composition of the second embodiment may contain, as necessary, components other than the alkyl ether carboxylic acid or a salt thereof and the alkyl sulfosuccinic acid or a salt thereof (for example, the components of the cleaning composition described above in "(1) Method for evaluating cleaning components or cleaning compositions").

[0082] (6) Cleaning method The cleansing method of the present embodiment is a method for cleansing skin and / or hair, which involves using a cleansing composition for skin and / or hair containing one or more compounds selected from the group consisting of alkyl ether carboxylic acids or salts thereof, and alkyl sulfosuccinic acids or salts thereof, and rinsing the skin and / or hair with water at 35°C or below. As the above-mentioned cleansing composition for skin and / or hair, the cleansing composition in "(5-2) Cleansing composition of the second embodiment" may be used.

[0083] The cleaning method of this embodiment may involve rinsing with water at 35° C. or lower, 30° C. or lower, 25° C. or lower, or 20° C. or lower. The cleaning method of this embodiment may involve rinsing with water at 15° C. or higher, for example.

[0084] The cleansing method of the present embodiment may be a method for cleansing skin and / or hair to remove sebum, which involves washing the skin and / or hair with a cleansing composition for skin and / or hair containing one or more compounds selected from the group consisting of alkyl ether carboxylic acids or salts thereof, and alkyl sulfosuccinic acids or salts thereof, and rinsing the skin and / or hair with water at 35°C or lower. [Example]

[0085] The present invention will be described in detail below based on examples, but the present invention should not be construed as being limited by the descriptions of these examples.

[0086] (1. Evaluation of the water contact angle of the substrate and reproducibility of sebum removal) In order to investigate a substrate that can effectively reproduce the sebum removal efficiency on the skin when using a cleaning ingredient or cleaning composition, even when the temperature of the rinsing water is different, a collagen plate (Example 1), a polycarbonate plate (Example 2), and a slide glass (Comparative Example 1) were prepared as substrates to be cleaned with sebum attached.

[0087] The slide glass used in Comparative Example 1 was a commercially available product. The collagen plate of Example 1 was produced by attaching a collagen casing to the surface of the slide glass of Comparative Example 1 without leaving any gaps. The polycarbonate plate of Example 2 was produced by tightly attaching a commercially available polycarbonate to the surface of the slide glass of Comparative Example 1.

[0088] The water contact angles of the substrates of Example 1, Example 2, and Comparative Example 1 were measured. The contact angle of water was measured seven times by the θ / 2 method using a contact angle meter (CAX-150 manufactured by Kyowa Interface Science Co., Ltd.) with water as the test liquid and a waiting time of 1 second after contact with the liquid, and the average value was calculated.

[0089] Furthermore, in order to examine the reproducibility of the sebum removal efficiency on the skin for the substrates of Example 1, Example 2, and Comparative Example 1, the skin on the arm of a subject (Reference Example) was also used as a reference, and the following artificial sebum removal test (Part 1) was conducted on these.

[0090] (Artificial sebum removal test (part 1)) An artificial sebum removal test (part 1) was carried out according to the following procedures (1) to (3). The artificial sebum used had the following composition: In order to make it easier to visually check the degree of sebum removal, artificial sebum to which a red coloring agent was added was applied to the substrates of the Examples and Comparative Examples.

[0091] Artificial sebum composition: squalene 10% by weight, isocetyl stearate 17% by weight, cholesteryl lanolinate 2% by weight, cholesterol 2% by weight, macadamia nut oil 35% by weight, glyceryl stearate 4% by weight, myristic acid 3% by weight, palmitic acid 12% by weight, stearic acid 3% by weight, oleic acid 12% by weight

[0092] The diluted solution of the cleaning composition was prepared by diluting cleaning composition A having the following composition with water by 7 times. Cleaning composition A: Sodium olefin (C14-16) sulfonate (11% by weight), lauryl betaine (3% by weight), polyquaternium-10 (0.4% by weight), water (balance)

[0093] (1) 0.3 g of the artificial sebum melted after adding the coloring agent was applied to the substrate of each of the examples and comparative examples to obtain each test specimen. Similarly, 0.3 g of the artificial sebum melted after adding the coloring agent was applied to the skin of the arm of a subject in the reference example. (2) Each test piece and each subject's arm were poured with water at 40°C, a diluted solution of the cleaning composition at 40°C, and a diluted solution of the cleaning composition at 20°C. (3) The state of removal of the artificial sebum from each test piece and subject in (2) above was visually evaluated according to the following evaluation criteria.

[0094] [Visual evaluation criteria] 5 points: Artificial sebum completely removed 4 points: Most of the artificial sebum was removed 3 points: About half of the artificial sebum remains 2 points: Most of the artificial sebum remains 1 point: No artificial sebum removed

[0095] Furthermore, the reproducibility of the evaluation results for the sebum cleansing of the Reference Example was evaluated according to the following criteria.

[0096] [Evaluation criteria for reproducibility of sebum cleansing] ⊚: Equivalent to the evaluation results of the Reference Example (the evaluation results for each item of 40°C water, 40°C diluted cleaning composition, and 20°C diluted cleaning composition were equivalent to the evaluation results of the Reference Example). ○: The evaluation results are quite similar to those of the reference example (among the evaluation results for each item of 40°C water, 40°C diluted cleaning composition, and 20°C diluted cleaning composition, only one item is different by one point from the evaluation results of the reference example). ×: Not similar to the evaluation results of the reference example (among the evaluation results for each item of 40°C water, 40°C diluted cleaning composition, and 20°C diluted cleaning composition, two or more items differ by one point or more from the evaluation results of the reference example).

[0097] The results of the artificial sebum removal test (part 1) are shown in Table 1. For the Reference Example, the appearance after washing with 40°C water, a 40°C diluted cleaning composition, and a 20°C diluted cleaning composition is shown in Figure 1.

[0098] [Table 1]

[0099] According to the results shown in Table 1 above, the degree of sebum removal when the diluted solution of the cleaning composition was used was similar to that of the reference example (skin on the arm), and therefore it was clear that Examples 1 and 2 had high reproducibility (reproducibility of ◎ or ○) when the cleaning composition was used on skin. Note that Comparative Example 1 showed good reproducibility when a diluted solution of the cleaning composition at 40°C was poured over, but showed poorer reproducibility than Examples 1 and 2 when a diluted solution of the cleaning composition at 20°C was poured over.

[0100] Furthermore, since the degree of sebum removal when 40°C water was poured over the skin in Example 1 was similar to that of the standard (skin on the arm) in the reference example, Example 1 was evaluated as having the highest reproducibility (reproducibility is ◎).

[0101] (2. Evaluation of Sebum Removal Efficiency by Surfactant Aqueous Solution) Next, using the collagen plate of Example 1, which was confirmed to have good reproducibility, to examine surfactants (cleansing ingredients) with good sebum removal efficiency, the following surfactant aqueous solutions of Examples 3, 4, 5, and Comparative Example 2, as well as water of Comparative Example 3, were prepared, and the following artificial sebum removal test (part 2) was conducted.

[0102] Here, the surfactant aqueous solution of Example 3 was a blend of 1 wt% sodium laureth-11 carboxylate and 99 wt% water. The surfactant aqueous solution of Example 4 was a blend of 1 wt% sodium laureth-6 carboxylate and 99 wt% water. The surfactant aqueous solution of Example 5 was a blend of 1 wt% laureth disodium sulfosuccinate and 99 wt% water. The surfactant aqueous solution of Comparative Example 2 was a blend of 1 wt% PEG-8 glyceryl isostearate and 99 wt% water. Comparative Example 3 was water.

[0103] (Artificial sebum removal test (part 2)) An artificial sebum removal test (part 2) was carried out according to the following procedures (1) to (5). (1) Multiple test specimens were prepared by applying 0.3 g of melted artificial sebum to multiple collagen plates, and the weight (g) of each test specimen was measured. (2) Each test specimen was immersed in Examples 3, 4, and 5, and Comparative Examples 2 and 3, which were kept at 20° C., and allowed to stand for 10 minutes. (3) Then, each test specimen was rinsed in a wash bottle and removed. (4) After each test piece in (3) was dried at room temperature for one day, the weight (g) of each test piece was measured. (5) Using the weight (g) measured in (1) above and the weight (g) measured in (4) above, the artificial sebum removal efficiency was calculated according to the following formula (i). Artificial sebum removal efficiency (%) = {("Weight (g) measured in (1) above" - ​​"Weight (g) measured in (4) above") / 0.3 (Weight (g) of artificial sebum)} × 100 (i)

[0104] The results of the artificial sebum removal test (part 2) are shown in Figure 2. In Figure 2, photographs of the appearance after washing of Examples 3, 4, and 5 and Comparative Examples 2 and 3 are shown.

[0105] As is clear from the results shown in FIG. 2, the surfactants of Examples 3 and 4, in which alkyl ether carboxylates were used, and Example 5, in which alkyl sulfosuccinates were used, were confirmed to have significantly superior sebum removal efficiency, even under a low-temperature condition of 20°C, compared to Comparative Example 2, in which a surfactant other than alkyl ether carboxylates or alkyl sulfosuccinates was used, and Comparative Example 3, in which water was used.

[0106] (3. Evaluation of Sebum Removal Efficiency by Skin and / or Hair Cleansing Compositions) Next, in order to investigate cleansing compositions for skin and / or hair that have good sebum removal efficiency, the cleansing compositions of Examples 6a and 6b, Comparative Examples 4a and 4b below, and water of Comparative Examples 5a and 5b were prepared as cleansing compositions, and the following artificial sebum removal test (part 3) was conducted using the collagen plate of Example 1, which was confirmed to have good reproducibility as described above.

[0107] The cleaning compositions of Examples 6a and 6b were both the same cleaning composition, and cleaning composition B shown below was used. Cleansing composition B: sodium laureth-11 carboxylate (11% by weight), lauryl betaine (3% by weight), polyquaternium-10 (0.4% by weight), water (balance)

[0108] The cleaning compositions of Comparative Examples 4a and 4b were both the same cleaning composition, and cleaning composition A used in the above-mentioned artificial sebum removal test (part 1) was used.

[0109] In both Comparative Examples 5a and 5b, the same water was used.

[0110] (Artificial sebum removal test (part 3)) An artificial sebum removal test (part 3) was carried out according to the following procedures (1) to (5). (1) Several test specimens were prepared by applying 0.3 g of melted artificial sebum to a collagen plate, and the weight (g) of each test specimen was measured. (2) Each test specimen was immersed in Example 6a, Comparative Example 4a, Comparative Example 5a, which was diluted 10 times with water and kept at 20°C, Example 6b, Comparative Example 4b, and Comparative Example 5b, which was diluted 10 times with water and kept at 40°C, respectively, and left to stand for 10 minutes. (3) Then, each test specimen was rinsed in a wash bottle and removed. (4) After each test piece in (3) was dried at room temperature for one day, the weight (g) of each test piece was measured. (5) The weight (g) measured in (4) above was subtracted from the weight (g) measured in (1) above, and the artificial sebum removal efficiency was calculated in the same manner as in formula (i) above.

[0111] The results of the artificial sebum removal test (part 3) are shown in Figure 3. Figure 3 also shows photographs of the appearance after washing of Examples 6a and 6b and Comparative Examples 4a, 4b, 5a, and 5b.

[0112] As is clear from the results shown in Figure 3, the cleansing compositions of Examples 6a and 6b, which used alkyl ether carboxylates, were confirmed to have excellent sebum removal efficiency not only at a temperature of 40°C but also at a low temperature of 20°C. Furthermore, the cleansing compositions of Comparative Examples 4a and 4b, which used surfactants other than alkyl ether carboxylates, and Comparative Examples 5a and 5b, which used water, were found to have good sebum removal efficiency at a temperature of 40°C, but were significantly poorer at a low temperature of 20°C. In particular, it was confirmed that the cleaning composition of Example 6a, which used an alkyl ether carboxylate, had significantly better sebum removal efficiency at a low temperature of 20°C than the cleaning composition of Comparative Example 4a, which used a surfactant other than an alkyl ether carboxylate, and Comparative Example 5a, which was water.

[0113] (4. Evaluation of foam volume by skin and / or hair cleansing compositions) Next, to examine the foam volume during washing under low-temperature conditions using alkyl ether carboxylates and alkyl sulfosuccinates, which have been confirmed to have good sebum removal efficiency even at a low temperature of 20°C, aqueous surfactant solutions (surfactant content: 1.5 wt %) of Examples 7 and 8 below were prepared, and the following foam volume test was conducted.

[0114] The surfactant aqueous solution of Example 7 was a blend of 1.5 wt% sodium laureth-11 carboxylate and 98.5 wt% water, while the surfactant aqueous solution of Example 8 was a blend of 1.0 wt% sodium laureth-11 carboxylate, 0.5 wt% laureth disodium sulfosuccinate, 1 wt% sodium laureth-6 carboxylate, and 98.5 wt% water.

[0115] (Foam volume test) The foam volume test was carried out according to the following procedure. 10 g of each of the surfactant aqueous solutions of Examples 7 and 8, kept at 25°C, was placed in a 100 ml PET bottle, sealed, and then shaken 10 times. After shaking, the bottle was allowed to stand, and the foam height (foam volume) in the bottle was evaluated by visual observation.

[0116] (Foam volume test results) The surfactant aqueous solution of Example 8 had a larger foam height (foam volume) and foam volume than the surfactant aqueous solution of Example 7. While a sufficient foam volume was observed in the surfactant aqueous solution of Example 7, the foam volume was even greater in the surfactant aqueous solution of Example 8. These results confirmed that even under a low temperature condition of 25°C, the combined use of an alkyl ether carboxylate and an alkyl sulfosuccinate as surfactants resulted in a superior foam volume compared to the use of only an alkyl ether carboxylate.

[0117] (5. Prescription Examples) Formulation examples of cleansing compositions for skin and / or hair are shown below. The cleansing composition for skin and / or hair of Formulation Example 1 below is used in a manner that it is rinsed off with water at 35° C. or less. The cleansing composition for skin and / or hair of Formulation Example 1 may be, for example, a body shampoo, a hair shampoo, or a scalp shampoo, or may serve as any or all of these.

[0118] (Prescription Example 1) Sodium laureth-11 carboxylate 6% by mass, disodium laureth sulfosuccinate (polyoxyethylene disodium lauryl sulfosuccinate) 5% by mass, lauryl betaine 3% by mass, polyquaternium-10 0.4% by mass, water 85.6% by mass

Claims

1. A cleaning ingredient or a cleaning composition is used on a test specimen having sebum attached to a substrate whose surface has a water contact angle of 50° or more and 110° or less, and the efficiency of removing the sebum by the cleaning ingredient or the cleaning composition is evaluated. Method for evaluating cleaning ingredients or cleaning compositions.

2. The substrate contains at least one of a protein and a synthetic resin. A method for evaluating the cleaning ingredient or cleaning composition according to claim 1.

3. The protein includes collagen. A method for evaluating the cleaning ingredient or cleaning composition according to claim 2.

4. The synthetic resin includes one or more selected from the group consisting of polycarbonate resin, silicone elastomer resin, polypropylene resin, acrylic resin, nylon resin, polyethylene resin, acrylonitrile butadiene styrene resin, polyethylene terephthalate resin, and polystyrene resin. A method for evaluating the cleaning ingredient or cleaning composition according to claim 2.

5. The cleaning composition is a cleaning composition for skin and / or hair, The method for evaluating a cleaning component or a cleaning composition is a method for evaluating a cleaning composition. A method for evaluating the cleaning ingredient or cleaning composition according to any one of claims 1 to 4.

6. It is used with sebum attached, The contact angle of water on the surface is 50° or more and 110° or less. A substrate for evaluation to evaluate the sebum removal efficiency of a cleansing ingredient or cleansing composition.

7. Using the method for evaluating a cleaning ingredient or cleaning composition according to any one of claims 1 to 4, The method for evaluating a cleaning component or a cleaning composition is a method for evaluating a cleaning component. A method for screening cleaning ingredients to be incorporated into a cleaning composition.

8. A method for producing a cleaning composition, which comprises blending a cleaning component screened by the screening method according to claim 7.

9. A cleaning composition containing a cleaning component screened by the screening method of claim 7.

10. A cleansing composition for skin and / or hair, which contains one or more compounds selected from the group consisting of alkyl ether carboxylic acids or salts thereof, and alkyl sulfosuccinic acids or salts thereof, and which is used in a manner that it is rinsed off with water at 35°C or lower.

11. the one or more selected from the group consisting of alkyl ether carboxylic acids or salts thereof, and alkyl sulfosuccinic acids or salts thereof are blended with one or more alkyl ether carboxylic acids or salts thereof, and one or more alkyl sulfosuccinic acids or salts thereof; 11. A cleansing composition for skin and / or hair according to claim 10.

12. the alkyl ether carboxylic acid or its salt is polyoxyethylene lauryl ether carboxylic acid or its salt, The alkyl sulfosuccinic acid or a salt thereof is polyoxyethylene sulfosuccinic acid lauryl salt.

12. A cleansing composition for skin and / or hair according to claim 10 or 11.

13. A method for washing skin and / or hair, comprising washing the skin and / or hair with a skin and / or hair cleansing composition containing one or more compounds selected from the group consisting of alkyl ether carboxylic acids or salts thereof, and alkyl sulfosuccinic acids or salts thereof, and rinsing the skin and / or hair with water at 35°C or below.

14. The cleansing composition for skin and / or hair contains one or more alkyl ether carboxylic acids or salts thereof and one or more alkyl sulfosuccinic acids or salts thereof as the one or more selected from the group consisting of alkyl ether carboxylic acids or salts thereof, and alkyl sulfosuccinic acids or salts thereof, 14. The method for cleansing skin and / or hair according to claim 13.

15. The alkyl ether carboxylic acid or its salt is polyoxyethylene lauryl ether carboxylic acid or its salt. The alkyl sulfosuccinic acid or a salt thereof is polyoxyethylene sulfosuccinic acid lauryl salt.

15. The method for washing skin and / or hair according to claim 13 or 14.

Images