Detergent composition

Abstract

To provide a detergent composition which gives a keratotic plug-removing (peeling) effect while having good foamability and foam quality (creaminess), suppresses skin irritation, and is excellent in low-temperature stability with time.SOLUTION: The detergent composition contains (A) at least one selected from the group consisting of N-acylaspartic acid having an acyl group having 8 to 18 carbon atoms and a salt thereof, and N-acyl - α - alanine having an acyl group having 8 to 18 carbon atoms and a salt thereof, (B) an amphoteric surfactant, (C) at least one α - hydroxy acid selected from the group consisting of malic acid, citric acid, tartaric acid, and lactic acid, and (D) phenoxyethanol. A ratio ((D) / (A)) of a blending amount of the component (D) to a blending amount of the component (A) is 0.005 to 0.1.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a cleaning composition. [Background technology]

[0002] In recent years, many people, regardless of age or gender, have been concerned about the appearance of visible pores. Visible pores are caused by the accumulation of keratin plugs. These plugs are found in areas with high sebum secretion, such as the nose and around the nose, and can cause pores to darken and become enlarged. Furthermore, delaying treatment for keratin plugs can lead to the proliferation of acne bacteria, which can cause acne. Therefore, removing keratin plugs is a desirable cosmetic procedure. However, because keratin plugs are formed by the solidification and integration of sebum and dead skin cells, washing with conventional cleansers or cleansers is insufficient to remove them. While sheet products and packs have been proposed as methods for removing keratin plugs, they can be cumbersome, requiring time for drying before peeling off and placing a burden on the skin due to their adhesive properties.

[0003] To address the above-mentioned problems, it is known to use a keratinocyte regeneration inhibitor containing an organic acid and / or a salt thereof selected from the group consisting of lactic acid, citric acid, tartaric acid, malonic acid, succinic acid, oxalic acid, malic acid, isocitric acid, glycolic acid, aspartic acid, glutamic acid, and pyrrolidonecarboxylic acid (see, for example, Patent Document 1). However, increasing the amount of organic acids and lowering the pH to improve effectiveness improves peeling efficacy, but can also cause discomfort and irritation (e.g., redness, stinging, burning sensation, etc.). Even when peeling the surface of the skin, symptoms such as burning sensation and excessive peeling can occur, and these symptoms can persist for days. Furthermore, peeling the mid- and deep layers of the skin has a greater impact. Skin recovery after mid- and deep peeling typically requires several days of indoor stay, forcing patients to wait several months before undergoing the next treatment.

[0004] Therefore, as a method for effectively inhibiting the regeneration of keratin plugs without causing rough skin, a method of adjusting the pH to a more neutral range has been proposed.For example, a keratin plug removal inhibitor (see, for example, Patent Document 2) containing one or more selected from lactic acid, succinic acid, citric acid, malic acid, salicylic acid, pyrrolidonecarboxylic acid, glycolic acid, and their salts, one or more surfactants selected from fatty acid soap, higher alkyl sulfate ester salts, N-acyl lower alkyl taurine salts, betaine surfactants, and polyoxyalkylene phytosterols, and one or more selected from polyoxyethylene-polyoxypropylene dimethyl ether, tranexamic acid, pantothenyl ethyl ether, St. John's wort, serine, trimethylglycine, alanine, glycylglycine, vitamin E acetate, vitamin E nicotinate, 1-piperidinepropionic acid, and their salts is known to be used as a cleanser. However, when such a keratin plug removal inhibitor is used as a cleanser, for example, when a fatty acid soap is combined with an organic acid, poor foaming may occur and a sufficient peeling effect may not be obtained.

[0005] On the other hand, a cleanser composition containing an acyl salt-type anionic surfactant and an organic acid (see, for example, Patent Document 3) is known as a cleanser, but it does not necessarily have the effect of removing keratin plugs, and since it is in a paste or solid form, it cannot be filled into a foamer container for use. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Publication No. 4-360830 [Patent Document 2] Japanese Patent Application Laid-Open No. 2013-49667 [Patent Document 3] Japanese Patent Application Laid-Open No. 2004-26976 Summary of the Invention [Problem to be solved by the invention]

[0007] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a cleanser composition that has good foaming properties and foam quality (creamy property), yet has a keratin plug removal (peeling) effect, suppresses irritation to the skin, and has excellent long-term low-temperature stability. [Means for solving the problem]

[0008] The cleansing composition according to the present invention comprises (A) at least one selected from the group consisting of N-acylaspartic acids and salts thereof having an acyl group containing 8 to 18 carbon atoms, and N-acyl-α-alanines and salts thereof having an acyl group containing 8 to 18 carbon atoms, (B) an amphoteric surfactant, (C) at least one α-hydroxy acid selected from the group consisting of malic acid, citric acid, tartaric acid, and lactic acid, and (D) phenoxyethanol, wherein the ratio of the amount of component (D) to the amount of component (A) ((D) / (A)) is 0.005 to 0.1.

[0009] Due to this constitution, the cleanser composition of the present invention can have good foaming properties and foam quality (creamy property), while also providing a keratin plug removal (peeling) effect, suppressing irritation to the skin, and exhibiting excellent long-term low-temperature stability.

[0010] The cleaning composition according to the present invention may have a pH of 5 to 8.5.

[0011] Due to this constitution, the cleansing composition according to the present invention can further reduce irritation to the skin.

[0012] The cleaning composition according to the present invention may be filled into a non-gas type foam-discharging container and used.

[0013] The cleansing composition according to the present invention can have better foaming properties and foam quality (creamyness) due to such a constitution. [Effects of the Invention]

[0014] According to the present invention, it is possible to provide a cleanser composition that has good foaming and foam quality (creamy property), yet has a keratin plug removal (peeling) effect, suppresses skin irritation, and has excellent low-temperature stability over time. DETAILED DESCRIPTION OF THE INVENTION

[0015] The cleaning composition according to this embodiment will be described in detail below. The present invention is not limited to the following embodiment. The present invention is not limited to the respective configurations described below, and various modifications are possible within the scope of the claims. Embodiments and examples obtained by appropriately combining the technical means disclosed in different embodiments and examples are also included in the technical scope of the present invention. Furthermore, in this specification, unless otherwise specified, "A to B" representing a numerical range means "greater than or equal to A and less than or equal to B."

[0016] The cleansing composition according to this embodiment contains: (A) at least one selected from the group consisting of N-acylaspartic acids having an acyl group containing 8 to 18 carbon atoms and salts thereof, and N-acyl-α-alanines having an acyl group containing 8 to 18 carbon atoms and salts thereof; (B) an amphoteric surfactant; (C) at least one α-hydroxy acid selected from the group consisting of malic acid, citric acid, tartaric acid, and lactic acid; and (D) phenoxyethanol.

[0017] [(A) at least one selected from the group consisting of N-acylaspartic acids having an acyl group with 8 to 18 carbon atoms and salts thereof, and N-acyl-α-alanines having an acyl group with 8 to 18 carbon atoms and salts thereof] Component (A) contained in the cleanser composition according to this embodiment is at least one selected from N-acylaspartic acid and its salts having an acyl group with 8 to 18 carbon atoms, and N-acyl-α-alanine and its salts having an acyl group with 8 to 18 carbon atoms. By including component (A) in the cleanser composition according to this embodiment, the cleanser composition can produce fine, creamy foam that adheres well to the skin while maintaining good foaming. Furthermore, component (A) N-acylaspartic acid and its salts having an acyl group with 8 to 18 carbon atoms, and N-acyl-α-alanine and its salts having an acyl group with 8 to 18 carbon atoms may be used alone, or two or more types may be used in combination.

[0018] The number of carbon atoms in the acyl group in N-acylaspartic acids and salts thereof having an acyl group of 8 to 18 carbon atoms may be 8 to 18, but from the viewpoint of further improving foaming and foam quality, it is preferably 8 to 16, and more preferably 12 to 16. The acyl group may be derived from a saturated or unsaturated straight-chain or saturated or unsaturated branched-chain fatty acid or a mixed fatty acid. Specific examples of fatty acids include caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, and oleic acid. Specific examples of mixed fatty acids include coconut oil fatty acid and palm kernel oil fatty acid.

[0019] When the above-mentioned N-acylaspartic acid is used as component (A) in the cleanser composition according to this embodiment, the cleanser composition may be neutralized with a base to a desired pH in order to improve foaming and foam quality. Examples of the base used for neutralization include inorganic alkalis such as sodium hydroxide, potassium hydroxide, sodium carbonate, and potassium carbonate; and organic alkalis such as monoethanolamine, diethanolamine, triethanolamine, trimethylamine, and triethylamine. Among these, in terms of foaming, foam quality, skin irritation, and availability, it is preferable to use sodium hydroxide, potassium hydroxide, or triethanolamine as the base to prepare the sodium salt, potassium salt, or triethanolamine salt.

[0020] On the other hand, from the viewpoints of foaming ability, foam quality, skin irritation, availability, etc., preferred examples of N-acylaspartates having an acyl group having 8 to 18 carbon atoms include sodium salts, potassium salts, ammonium salts, and ethanolamine salts, more preferably sodium salts, potassium salts, and ethanolamine salts, and even more preferably sodium salts. As N-acylaspartates having an acyl group having 8 to 18 carbon atoms, commercially available products can be used, such as Aminoformer (registered trademark) FLDS-L (manufactured by Asahi Kasei Finechem Co., Ltd.) and Aminoformer FCMT-L (manufactured by Asahi Kasei Finechem Co., Ltd.).

[0021] The N-acyl-α-alanine and its salts having an acyl group having 8 to 18 carbon atoms may be N-acyl-D-alanine (salt), N-acyl-L-alanine (salt), or N-acyl-DL-alanine (salt), or may be a mixture of two or more selected from these. The number of carbon atoms in the acyl group in N-acyl-α-alanine and its salts may be 8 to 18, but from the viewpoint of further improving foaming and foam quality, it is preferably 8 to 16, and more preferably 12 to 16. The acyl group may be derived from a saturated or unsaturated linear or saturated or unsaturated branched fatty acid or a mixed fatty acid. Specific examples of fatty acids include caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, and oleic acid. Specific examples of mixed fatty acids include coconut oil fatty acid and palm kernel oil fatty acid.

[0022] Examples of N-acyl-α-alanine salts include alkali metals such as sodium and potassium, alkaline earth metals such as magnesium and calcium, organic amines such as monoethanolamine, diethanolamine, triethanolamine, 2-amino-2-methyl-1-propanol, and 2-amino-2-methyl-1,3-propanediol, inorganic amines such as ammonia, and basic amino acids such as lysine, ornithine, and arginine. As N-acyl-α-alanine salts having an acyl group having 8 to 18 carbon atoms, triethanolamine salts are preferred from the viewpoints of product stability, skin irritation, and moist feeling after towel drying. Commercially available N-acyl-α-alanine salts having an acyl group having 8 to 18 carbon atoms can be used, such as Amilite (registered trademark) ACT-12 (manufactured by Ajinomoto Co., Inc.).

[0023] In the cleanser composition according to this embodiment, the amount of component (A) is not limited as long as it can form fine, creamy foam that adheres well to the skin while maintaining good foaming. From the viewpoint of further improving foaming and foam quality, the amount of component (A) is preferably 3 to 30% by mass, and more preferably 5 to 20% by mass, based on the total amount of the cleanser composition.

[0024] [(B) Amphoteric surfactant] The component (B) used in the cleaning composition according to this embodiment is an amphoteric surfactant. By including the component (B) in the cleaning composition according to this embodiment, excellent temperature stability and rich foaming can be achieved. The amphoteric surfactant is not particularly limited as long as it is an amphoteric surfactant commonly used as a cleaning agent ingredient. Examples of the amphoteric surfactant include lauric acid amidopropyl betaine, coconut oil fatty acid amidopropyl betaine, 2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazolinium betaine, sodium laurylaminodiacetate, sodium β-aminopropionate, N-lauroyl-N'-carboxymethyl-N'-hydroxyethyl ethylenediamine sodium, coconut oil fatty acid dimethyl sulfopropyl betaine, lauryl dimethylamino hydroxysultaine, and lauryl hydroxysultaine. The amphoteric surfactant (component (B)) may be used alone or in combination of two or more types.

[0025] In the cleaning composition according to this embodiment, the amount of component (B) is not limited as long as it can maintain excellent temperature stability and abundant foaming. From the viewpoint of maintaining temperature stability and rinsing properties, the amount of component (B) is preferably 5 to 25% by mass, and more preferably 7 to 15% by mass, of the total cleaning composition.

[0026] [(C) at least one α-hydroxy acid selected from the group consisting of malic acid, citric acid, tartaric acid, and lactic acid] The component (C) used in the cleanser composition according to this embodiment is at least one α-hydroxy acid selected from the group consisting of lactic acid, malic acid, and tartaric acid. By incorporating the component (C) into the cleanser composition according to this embodiment, keratin plugs can be removed. The α-hydroxy acid as component (C) may be selected from malic acid, citric acid, tartaric acid, and lactic acid, but is preferably tartaric acid from the viewpoint of further improving the effect of removing keratin plugs. Furthermore, the α-hydroxy acid as component (C) may be used alone or in combination of two or more types.

[0027] In the cleanser composition according to this embodiment, the amount of component (C) to be blended is not limited as long as it can remove keratin plugs. From the viewpoint of improving the keratin plug removal effect, the amount of component (C) to be blended is preferably 0.001 to 3% by mass, more preferably 0.01 to 1% by mass, based on the total amount of the cleanser composition. If the amount of component (C) to be blended is 0.001% by mass or more, a sufficient effect of removing keratin plugs can be obtained. Furthermore, if the amount of component (C) to be blended is 3% or less, This does not cause skin irritation and can prevent precipitation of α-hydroxy acids in the cleanser composition at low temperatures. Although the cleanser composition according to this embodiment can also contain salts of malic acid, citric acid, tartaric acid, and / or lactic acid, these salts do not provide the effect of removing keratin plugs.

[0028] [(D) Phenoxyethanol] The component (D) used in the cleanser composition according to this embodiment is phenoxyethanol. By including the above-described components (A) to (C) in the cleanser composition according to this embodiment, the cleanser composition can have good foaming and foam quality while also having a keratin plug removal effect. However, this can result in a lack of low-temperature stability over time. Therefore, the cleanser composition according to this embodiment contains phenoxyethanol as component (D), which contributes to low-temperature stability over time. In this specification, "having low-temperature stability over time" means that the cleanser composition does not become cloudy or precipitate its contents for a long period of time (e.g., one week or more) at low temperatures (e.g., 5°C or below).

[0029] The cleaning composition according to this embodiment has low-temperature stability over time when the ratio of the blending amount of component (D) to the blending amount of component (A) ((D) / (A)) is 0.005 to 0.1. This is thought to be because the interaction between components (A) and (D) can suppress the formation of crystal nuclei of component (A), which can cause cloudiness and precipitation. From the viewpoint of further improving low-temperature stability over time, this ratio is preferably 0.005 to 0.05.

[0030] In the cleaning composition according to this embodiment, the content of component (D) is not particularly limited, as long as it is contained so that the ratio (D) / (A) is 0.005 to 0.1. The content of component (D) is preferably 0.01 to 1 mass%, and more preferably 0.05 to 0.6 mass%, based on the total mass of the cleaning composition.

[0031] The cleanser composition according to this embodiment contains components (A) to (D), and by adjusting the (D) / (A) ratio to 0.005 to 0.1, the cleanser composition can achieve good foaming and foam quality, while still achieving a keratin plug removal effect, reducing skin irritation, and exhibiting excellent low-temperature stability over time. The cleanser composition according to this embodiment also preferably has a pH of 5 to 8.5. By adjusting the pH to 5 to 8.5, the cleanser composition can achieve a sufficient keratin plug removal effect while further reducing skin irritation. In this specification, the pH of the cleanser composition is measured at 30°C in accordance with JIS Z 8802:2011.

[0032] The cleaning composition according to this embodiment may contain a pH adjuster as appropriate, provided that the object of the present invention is not impaired. Examples of pH adjusters include organic acid salts such as lactate, malate, tartrate, citrate, succinate, salicylate, and benzoate.

[0033] The cleanser composition according to this embodiment preferably does not contain a higher fatty acid salt. Higher fatty acid salts refer to salts of fatty acids having 12 or more carbon atoms, and examples thereof include those obtained by saponifying or neutralizing fatty acids such as lauric acid, myristic acid, palmitic acid, stearic acid, and coconut oil with alkaline agents such as sodium hydroxide, potassium hydroxide, monoethanolamine, and diethanolamine. The absence of a higher fatty acid salt in the cleanser composition according to this embodiment results in excellent foaming properties, and a sufficient keratin plug removal effect can be achieved even at a pH of greater than 5.

[0034] The cleaning agent composition according to this embodiment is preferably filled into a non-gas foam-dispensing container for use. The foam-dispensing container is a container that can dispense a foam by mixing the composition filled in the container with air and passing the mixture through a porous membrane. Specific examples of the foam-dispensing container include a pump foamer and a squeeze foamer.

[0035] In addition, one or more porous membranes are provided inside the foam discharge container, and the number of holes in the porous membrane is not particularly limited. Although not limited, from the viewpoint of obtaining fine foam, a mesh size of 100 to 400 mesh is preferred, and a mesh size of 200 to 300 mesh is more preferred.

[0036] When the cleaning composition according to this embodiment is filled in a non-gas type foam container and used, the cleaning composition can be made to foam better and have better foam quality.

[0037] The cleanser composition according to this embodiment can be produced by a conventional method and can be suitably used as a cleanser composition for face washing, cleansing, body shampoo, massage agent, etc.

[0038] In addition to the components described above, the cleanser composition according to this embodiment may contain other components as appropriate, provided that the purpose of the present invention is not impaired. For example, anionic surfactants, cationic surfactants, nonionic surfactants, water-soluble polymeric compounds (including cationic, nonionic, anionic, etc.), physiologically active ingredients, antioxidants, sequestering agents, preservatives, ultraviolet absorbers, fragrances, moisturizers, salts, solvents, neutralizing agents, insect repellents, enzymes, and other ingredients may be blended into the cleanser composition.

[0039] The anionic surfactant is not particularly limited, but examples thereof include potassium N-coconut oil fatty acid acylglycine, sodium N-coconut oil fatty acid acylglycine, ammonium N-palm kernel oil fatty acid acylglycine, potassium N-coconut oil fatty acid acylglutamate, triethanolamine N-coconut oil fatty acid acylglutamate, sodium N-lauroylglutamate, triethanolamine N-lauroylglutamate, sodium N-lauroylalanine, sodium N-stearoylalanine, triethanolamine N-myristoyl aspartate, sodium α-lauroylsulfonate, sodium myristoylallyl sulfonate, sodium laurylnaphthalenesulfonate, triethanolamine lauryl sulfate, ammonium lauryl sulfate, sodium lauryl ether sulfate, sodium polyoxyethylene lauryl ether sulfate, potassium polyoxyethylene coconut oil fatty acid amide ether sulfate, etc. Anionic surfactants may be used alone, or two or more types may be used in combination.

[0040] The nonionic surfactant is not particularly limited, but examples thereof include polyoxyethylene cetyl ether, sorbitan monostearate, polyoxyethylene hydrogenated castor oil, polyoxyethylene monoisostearate, polyoxyethylene glyceryl dioleate, coconut oil fatty acid diethanolamide, coconut oil fatty acid monoethanolamide, coconut oil fatty acid N-methylethanolamide, polyoxyethylene polyoxypropylene glycol, polyethylene glycol monolaurate, polyoxyethylene sorbitan monolaurate, etc. One type of nonionic surfactant may be used alone, or two or more types may be used in combination.

[0041] The water-soluble polymer is not particularly limited, but examples thereof include dimethyldiallylammonium chloride-acrylamide copolymer, acrylamide-acrylic acid-dimethyldiallylammonium chloride copolymer, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropyl methylcellulose, hydroxypropyl starch phosphate, polyethylene glycol, highly polymerized polyethylene glycol, polyvinyl alcohol, polyglutamic acid, carboxyvinyl polymer, acrylic acid-alkyl methacrylate copolymer, alkyl acrylate copolymer, etc. The water-soluble polymer may be used alone or in combination of two or more kinds.

[0042] The physiologically active ingredients include substances that impart some physiological activity to the skin when applied to the skin, such as anti-inflammatory agents, anti-aging agents, UV protection agents, firming agents, antioxidants, moisturizing agents, blood circulation promoters, antibacterial agents, disinfectants, drying agents, cooling agents, warming agents, vitamins, amino acids, wound healing promoters, irritation soothing agents, analgesics, cell activators, enzyme components, etc. Examples of physiologically active ingredients include natural plant extracts, seaweed extracts, herbal medicine ingredients, and compounds, and among these, natural plant extracts, seaweed extracts, and herbal medicine ingredients are particularly preferred from the standpoint of safety.

[0043] Examples of the above-mentioned natural plant extracts, seaweed extracts, and herbal ingredients include angelica tree extract, hydrangea extract, althaea extract, aloe extract, apricot extract, ginkgo extract, fennel extract, oolong tea extract, angelica tree extract, scutellaria root extract, Phellodendron bark extract, St. John's wort extract, watercress extract, orange extract, dried seawater, seaweed extract, hydrolyzed wheat powder, hydrolyzed silk, chamomile extract, carrot extract, artemisia capillaris extract, licorice extract, kakyō extract, kiwi extract, cucumber extract, gardenia extract, kumazasa extract, sophora flavescens extract, walnut extract, grapefruit extract, chlorella extract, mulberry extract, black tea extract, yeast extract, collagen, salvia extract, soapwort extract, hawthorn extract, rehmannia root extract, lithospermum root extract, perilla extract, linden extract, peony extract, white birch extract, and horsetail extract. ivy extract, hawthorn extract, elderberry extract, yarrow extract, peppermint extract, sage extract, cnidium extract, Swertia japonica extract, soybean extract, Chinese laurel extract, thyme extract, tea extract, clove extract, tangerine peel extract, Angelica acutiloba extract, Peach kernel extract, Houttuynia cordata extract, tomato extract, natto extract, carrot extract, garlic extract, wild rose extract, honey, witch hazel extract, Japanese knotweed extract, bisabolol, loquat extract, Poria cocos extract, propolis, loofah extract, peppermint extract, linden extract, hop extract, Madonna lily flower extract, horse chestnut extract, soapberry extract, melissa extract, peach extract, saxifrage extract, yuzu extract, mugwort extract, lavender extract, lemon extract, astragalus extract, rosemary extract, and royal jelly extract.

[0044] In addition to the above-mentioned natural plant extracts, seaweed extracts, and herbal ingredients, other ingredients include, for example, biopolymers such as deoxyribonucleic acid, mucopolysaccharides, sodium hyaluronate, sodium chondroitin sulfate, collagen, elastin, chitin, chitosan, and hydrolyzed eggshell membrane; moisturizing ingredients such as amino acids, sodium lactate, urea, sodium pyrrolidone carboxylate, betaine, and whey; oily ingredients such as sphingolipids, ceramides, cholesterol, cholesterol derivatives, and phospholipids; anti-inflammatory agents such as ε-aminocaproic acid, glycyrrhizic acid, β-glycyrrhetinic acid, lysozyme chloride, guaiazulene, and hydrocortisone; and vitamins (A, B2, B3, B6, B7, B8, B9, B10, B12, B13, B14, B15, B16, B17, B18, B19, B20, B21, B22, B23, B24, B25, B26, B27, B28, B29, B30, B31, B31, B32, B33, B34, B34, B35, B36, B36, B37, B37, B38, B39, B41, B42, B43, B44, B45, B46, B47, B48, B49, B51, B51, B52, B53, B54, B55, B56, B57, B58, B59, B61, B62, B63, B64, B65, B66, B67, B68, B69, B71, B72, B73, B74, B75, B76, B77, B78, B79, B 6, C, D, E), vitamins such as calcium pantothenate, biotin, nicotinamide, vitamin C ester, active ingredients such as allantoin, diisopropylamine dichloroacetate, 4-aminomethylcyclohexanecarboxylic acid, antioxidants such as tocopherol, carotenoids, flavonoids, tannins, lignans, saponin, cell activators such as β-hydroxy acids, blood circulation promoters such as γ-oryzanol and vitamin E derivatives, disinfectants such as isopropylmethylphenol, triclosan, hinokitiol, and benzalkonium chloride, cooling agents such as l-menthol and peppermint oil, and wound healing agents such as retinol and retinol derivatives. [Example]

[0045] Next, the cleaning composition according to this embodiment will be described with reference to examples, but the present invention is not limited to these examples. In all of the following examples and comparative examples, the blending amounts are in mass %.

[0046] [Examples 1 to 10 and Comparative Examples 1 to 4] The detergent compositions shown in Table 1 were prepared in a conventional manner, and 200 mL of each was filled into a 200 mL pump former type container (using two 200 mesh sheets) to obtain non-gas type liquid detergent compositions. The obtained detergent compositions were evaluated as follows, and the results are shown in Table 1. This is shown.

[0047] (1) Low-temperature stability over time The detergent compositions were each filled into 50 mL transparent sample tubes and stored at 5°C for 2 weeks, after which the appearance was evaluated according to the following criteria.

[0048] <Evaluation criteria> 5: Transparent appearance with no precipitates 4: Slightly cloudy but no precipitate 3: Slightly cloudy, but no precipitates are visible 2: Slightly cloudy with precipitates 1: Many precipitates are observed

[0049] (2) Blackhead removal (peeling) effect Five healthy panelists applied 1 g of the cleanser composition only to the nose, massaged for 30 seconds, and then rinsed with water for 1 minute. The number of keratin plugs present on the nostrils was counted before and after washing, and the keratin plug removal rate was calculated and evaluated using the following formula (1). The number of keratin plugs was counted visually based on images taken using a skin image analysis system, Visia Evolution (manufactured by Canfield Scientific).

[0050]

number

[0051] <Evaluation criteria> 5: Blackhead removal rate is over 80% 4: Blackhead removal rate is 60% or more 3: Blackhead removal rate is 40% or more but less than 60% 2: Blackhead removal rate is 20% or more but less than 40% 1: Blackhead removal rate is less than 20%

[0052] (3) Skin irritation during use A panel of 20 experts applied 3 g of the cleanser composition directly to their faces and then washed their faces, and the skin irritation was evaluated at room temperature according to the following evaluation criteria.

[0053] <Evaluation criteria> 5: 18 or more subjects reported no irritation during use 4: 14-17 subjects reported no irritation during use 3: 9-13 subjects reported no irritation during use 2: 5-8 subjects reported no irritation during use 1: Fewer than 5 subjects reported no irritation during use

[0054] [Table 1]

[0055] The cleanser compositions of Examples 1 to 10 were good in terms of foaming and foam quality (creamyness). As is clear from Table 1, the cleanser compositions of Examples 1 to 10 had excellent performance in terms of low-temperature stability over time, keratin plug removal (peeling) effect, and skin irritation. On the other hand, the cleanser compositions of Comparative Examples 1 to 4 were inferior in all aspects.

[0056] Another formulation example of a cleanser composition is given below as Example 11. The cleanser composition of Example 11 was also examined for foaming, foam quality (creamyness), low-temperature stability over time, keratin plug removal (peeling) effect, and skin irritation, and was found to have excellent properties in all respects.

[0057] Example 11 (mass%) (1) Cocoylalanine TEA 15.0 (2) Lauryl hydroxysultaine 10.0 (3)Tartaric acid 0.1 (4) Phenoxyethanol 0.5 (5) Glycerin 15.0 (6) PEG80 Sorbitan Laurate 5.0 (7) PPG-9 Diglyceryl 5.0 (8) Glycosyltrehalose 1.0 (9) DPG 5.0 (10) Polysorbate 20 0.5 (11) EDTA-2Na 0.2 (12) Glycyrrhizic acid 2K 0.1 (13) Lemon Fruit Extract 0.1 (14) Aloe vera juice 0.1 (15) Chamomile flower extract 0.01 (16) Sage leaf extract 0.01 (17) Ascorbic acid sulfate disodium 0.01 (18) Bergamot Fruit Oil 0.1 (19) Lavender oil 0.01 (20) Orange oil 0.01 (21) Sodium benzoate 0.5 (22)K hydroxide appropriate amount (23) Flavoring (appropriate amount) (24) Purified water remainder

Claims

1. (A) at least one selected from the group consisting of N-acylaspartic acid and its salts having an acyl group with 8 to 18 carbon atoms, and N-acyl-α-alanine and its salts having an acyl group with 8 to 18 carbon atoms; (B) an amphoteric surfactant; (C) at least one α-hydroxy acid selected from the group consisting of malic acid, citric acid, tartaric acid, and lactic acid; (D) phenoxyethanol, Including, A cleaning composition in which the ratio of the blending amount of the component (D) to the blending amount of the component (A) ((D) / (A)) is 0.005 to 0.

1.

2. The cleaning composition according to claim 1, which has a pH of 5 to 8.

5.

3. The cleaning composition according to claim 1 or 2, which is filled into a non-gas type foam-discharging container for use.

Images