Cosmetics

Incorporating isomalt and other components into rinse-off cosmetics with silicates addresses the sticky and squeaky issues of high surfactant use, ensuring a smooth and moisturized skin feel.

JP7759764B2Active Publication Date: 2025-10-24FUAN KERU
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Patent Information

Application Number
JP2021173691
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Filing Date
2021-10-25
Publication Date
2025-10-24
Estimated Expiration
2041-10-25

AI Technical Summary

Technical Problem

Conventional rinse-off cosmetics containing silicates, when increased surfactant amounts are used to remove makeup, result in a sticky and squeaky feeling during rinsing, leading to a less smooth and less moisturized skin sensation after washing.

Method used

Incorporation of isomalt, a polyhydric alcohol, a water-soluble polymer, and a surfactant into the cosmetic composition, specifically with silicates like bentonite, to maintain a smooth and silky skin feel even with higher surfactant content.

Benefits of technology

The composition provides a smooth, silky, and moisturized skin sensation during and after rinsing, despite increased surfactant levels, enhancing user comfort and cosmetic efficacy.

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Abstract

To provide a cosmetic containing silicates which has excellent sense of use during washing out and washing-up and to a cosmetic which gives a smooth feeling to the skin during washing out and a smooth, slippery and moist feeling to the skin after washing especially when the content of a surfactant is increased relative to the total amount of the cosmetic.SOLUTION: There is provided a cosmetic which comprises the following components (A) to (E): (A) silicates, (B) isomalt, (C) a polyhydric alcohol other than isomalt, (D) a water-soluble polymer and (E) a surfactant.SELECTED DRAWING: None
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Description

[Technical Field]

[0001] The present invention relates to a rinse-off cosmetic composition containing silicates and having a good feel when used. [Background technology]

[0002] Cosmetics containing relatively high amounts of silicates include packs (so-called mud packs) and massage cosmetics. These cosmetics containing silicates, such as bentonite, are applied to the skin, left on until the coating hardens, or massaged into the skin, and then rinsed off with water or hot water. Because these cosmetics not only moisturize the skin but also remove stubborn dirt, such as keratinocytes and blackheads, that is difficult to remove with regular facial cleansing, an increasing number of consumers are using these cosmetics several times a week. The moist, smooth, and silky feel they leave on the skin after washing is one of the attractions of using these cosmetics. Examples of packs and massage cosmetics containing silicates are disclosed in Patent Document 1 (JP 60-11507 A) and Patent Document 2 (JP 2014-237601 A).

[0003] Conventional packs and massage cosmetics are often used during or after bathing, on skin that is not covered with makeup. For this reason, conventional packs and massage cosmetics either do not contain surfactants or contain only small amounts (less than 1% by mass) to ensure uniform mixing and dispersion of the silicates and optional oils, fragrances, and other ingredients in the composition, in other words, to stabilize the formulation. On the other hand, as lifestyles have become more diverse in recent years, more consumers are using packs and massage cosmetics while wearing makeup to reduce the time it takes to apply makeup. In response to this, there has been an increase in pack and massage products that contain increased amounts of surfactants to remove makeup stains. In the process of developing wash-off cosmetics such as packs and massage cosmetics, the inventors of the present application encountered the problem that increasing the amount of surfactant added caused the sticky feeling of the surfactant itself and a squeaky feeling due to the generated scum during rinsing, reducing the "smooth, pleasant feeling" felt with conventional packs and massage cosmetics, and leaving skin feeling less smooth, slimy, and squeaky after washing, and not moisturized. There is a demand for wash-off cosmetics (packs and massage cosmetics) that have a smooth feeling when rinsing, and leave skin feeling smooth, silky, and moisturized after washing, and that have a pleasant feel when used.

[0004] Isomalt is an equimolar mixture of two disaccharides, specifically, α-D-glucopyranosyl-1,6-sorbitol and α-D-glucopyranosyl-1,1-mannitol, obtained by reducing isomaltulose, which is obtained by enzymatic transfer reaction of sucrose. A gel-like composition containing a carboxyvinyl polymer, citric acid and / or its salt, and isomalt has been disclosed (Patent Document 3: JP 2019-214515 A). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 115507 / 1983 [Patent Document 2] Japanese Patent Application Laid-Open No. 2014-237601 [Patent Document 3] Japanese Patent Application Publication No. 2019-214515 Summary of the Invention [Problem to be solved by the invention]

[0006] The objective of the present invention is to provide a cosmetic containing silicates that has an excellent feel when used both during rinsing and after rinsing. In particular, the objective is to provide a cosmetic that leaves the skin feeling smooth when rinsing and that leaves the skin feeling smooth, silky, and moisturized after rinsing, even when the surfactant content is relatively increased relative to the total amount of the cosmetic.

[0007] The inventors of the present application discovered that when isomalt is added to rinse-off cosmetics containing silicates such as bentonite, the skin feels smooth and silky when rinsed off, even in compositions containing a relatively large amount of surfactants, and the skin feels smooth, silky, and moisturized after rinsing. That is, the present invention relates to a rinse-off cosmetic composition which contains silicates, isomalt, a polyhydric alcohol, a water-soluble polymer, and a surfactant and which provides an excellent feeling when used. [Means for solving the problem]

[0008] The present invention is configured as follows. (1) A cosmetic composition containing the following (A) to (E): (A) Silicates (B) Isomalt (C) Polyhydric alcohol other than isomalt (D) Water-soluble polymer (E) Surfactant (2) The cosmetic composition according to (1), wherein (A) the silicates are one or more selected from bentonite, montmorillonite, hectorite, stevensite, smectite, silicate (Na / Mg), kaolin, talc, mica, sodium silicate, magnesium silicate, calcium silicate, aluminum silicate, and silicic anhydride. (3) (B) The cosmetic composition according to (1) or (2), containing 0.1 to 15% by mass of isomalt based on the total amount of the cosmetic composition. (4) The cosmetic according to any one of (1) to (3), containing 0.01 to 20% by mass of (E) surfactant based on the total amount of the cosmetic. (5) A cosmetic composition according to any one of (1) to (4), which is a wash-off type. [Effects of the Invention]

[0009] The cosmetic composition of the present invention provides a smooth, comfortable feel (usage sensation) on the skin while rinsing with water, and leaves the skin feeling smooth, silky, and moisturized after rinsing. Generally, increasing the surfactant content in a composition can cause a rough feeling during rinsing due to the stickiness inherent to surfactants and the scum that forms. However, by adopting the composition of the present invention, even when the surfactant content is increased to 1% by mass or more, a smooth feeling upon rinsing can be achieved at the same level as in conventional compositions containing no or only small amounts of surfactant. By adopting the composition of the present invention, the smooth, silky, and moisturized feeling on the skin after rinsing can be further achieved. The cosmetic composition of the present invention is ideal for use as a wash-off cosmetic composition, such as a pack cosmetic or a massage cosmetic. DETAILED DESCRIPTION OF THE INVENTION

[0010] The present application relates to a cosmetic preparation containing (A) a silicate, (B) isomalt, (C) a polyhydric alcohol other than isomalt, (D) a water-soluble polymer, and (E) a surfactant.

[0011] (A) Silicates In the present invention, silicic anhydride (silica) is included in the silicates. The silicate (A) used in the present invention may be any silicate used in cosmetics. It may be a natural product or a synthetic product. Silicates have the effect of scrubbing and adsorbing dirt on the skin (keratin, keratin plugs, sebum, dust, makeup stains, etc.). They also play a role in making the skin smooth and silky. Examples of the silicate (A) include bentonite, montmorillonite, hectorite, stevensite, smectite, silicate (Na / Mg), kaolin, talc, mica, sodium silicate, magnesium silicate, calcium silicate, aluminum silicate, and silicic anhydride. When the cosmetic of the present invention is used as a pack or massage cosmetic, it is applied to the skin in an appropriate thickness and left on until the coating hardens, or the cosmetic is applied while massaging, so the viscosity of the composition must be such that it does not drip. From this perspective, it is preferable to select (A) silicates that swell and thicken in water, ethanol, polyhydric alcohols, etc. (thickening silicate minerals), such as one or more selected from bentonite, montmorillonite, hectorite, stevensite, smectite, sodium / magnesium silicate, and kaolin. In the present invention, silicic anhydride is included in the silicates. However, non-swelling silicates such as silicic anhydride are also preferably included in the composition, since their inclusion together with thickening silicate minerals such as bentonite enhances the effect of removing surfactants and scum from the skin and reducing stickiness and squeaking. From this perspective, it is also possible to combine thickening and non-thickening silicates as (A) silicates. That is, there are three ways to select (A) silicates: from thickening silicates, combining thickening and non-thickening silicates, and selecting from non-thickening silicates. However, the two more preferred ways are to select from thickening silicates and combining thickening and non-thickening silicates. It is more preferable to contain two or more of bentonite, montmorillonite, hectorite, stevensite, smectite, silicate (Na / Mg), kaolin, talc, mica, sodium silicate, magnesium silicate, calcium silicate, aluminum silicate, and silicic anhydride. The silicates (A) should be contained in an amount of 5 to 25% by mass, more preferably 7 to 15% by mass, based on the total amount of the cosmetic.

[0012] (B) Isomalt Isomalt is an equimolar mixture of two disaccharides, specifically, α-D-glucopyranosyl-1,6-sorbitol and α-D-glucopyranosyl-1,1-mannitol, obtained by reducing isomaltulose, which is obtained by enzymatic transfer reaction of sucrose. It is generally used as a food sweetener. In the present invention, commercially available reduced palatinose manufactured by Mitsui Sugar Co., Ltd. can be used as the isomalt of the present invention. The cosmetic preparation of the present invention preferably contains isomalt in an amount of 0.1 to 15% by mass, more preferably 0.5 to 12% by mass, and even more preferably 1 to 10% by mass, based on the total amount of the cosmetic preparation. The inclusion of (B) isomalt achieves the desirable smooth feeling upon rinsing characteristic of cosmetics containing (A) silicates, without causing the stickiness and squeaky feeling inherent to the coexisting (E) surfactants (E) and the resulting scum. When the surfactant content is low, at less than 1% by mass, the effect of the present invention is naturally achieved due to the low amount of surfactant, which inhibits the smooth feeling. When the surfactant content is 1% by mass or more, the frequency of the stickiness and squeaking caused by the generated scum, which are the objectives of the present invention, increases, so the effect of adding (B) isomalt is significantly felt. Experiments have shown that when the surfactant content is up to about 20% by mass, adding (B) isomalt achieves a smooth feeling when rinsing. Furthermore, the composition of the present invention leaves the skin moisturized, smooth, and silky after rinsing. The moist feeling after rinsing is further enhanced by adding (B) isomalt.

[0013] (C) Polyhydric alcohol The (C) polyhydric alcohol used in the present invention refers to a polyhydric alcohol other than (B) isomalt. Any polyhydric alcohol used in cosmetics is acceptable. The (C) polyhydric alcohol contributes to a moisturized feeling after washing. While it is preferable for the cosmetic of the present invention to contain water, in a water-free composition, the (C) polyhydric alcohol also plays a role in dispersing and swelling the (A) silicates. Examples of the (C) polyhydric alcohol used in the present invention include glycols, glycerins, and sugar alcohols. Examples of glycols include ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, polypropylene glycol, isoprene glycol, 1,3-butylene glycol, 1,2-butanediol, 1,2-pentanediol, 1,2-hexanediol, 1,2-octanediol, and 1,2-decanediol. Examples of glycerins include glycerin, diglycerin, and polyglycerin. Examples of sugar alcohols include xylitol, trehalose, maltitol, mannitol, sorbitol, erythritol, arabitol, ribitol, galactitol, glucitol, erythritol, and raffinose. From the viewpoint of usability, preferred examples include glycerin, diglycerin, sorbitol, maltitol, dipropylene glycol, 1,3-butylene glycol, pentylene glycol, and raffinose. In the present invention, the content of (C) polyhydric alcohol is preferably 0.01 to 50% by mass, more preferably 5 to 40% by mass, and even more preferably 10 to 40% by mass, of the total amount of the cosmetic.

[0014] (D) Water-soluble polymer The water-soluble polymer (D) used in the present invention may be any of those used in cosmetics. By thickening the cosmetic, it improves the dispersion and stability of the cosmetic. It also facilitates application without dripping onto the skin. Examples of the water-soluble polymer (D) used in the present invention include carbomer, xanthan gum, hydroxyethyl cellulose, hydroxyethyl cellulose, carboxymethyl cellulose, and carboxymethyl dextran. The amount of the water-soluble polymer (D) may be adjusted appropriately depending on the intended purpose so that the viscosity of the cosmetic falls within a suitable range. In the present invention, the water-soluble polymer (D) is preferably contained in an amount of 0.01 to 2% by mass, more preferably 0.05 to 1% by mass, and even more preferably 0.05 to 0.5% by mass, based on the total amount of the cosmetic. Within these ranges, the composition exhibits excellent dispersion and stability without the sticky feeling typical of water-soluble polymers, and excellent usability without dripping upon application to the skin can be obtained.

[0015] (E) Surfactant The surfactant (E) used in the present invention may be any surfactant used in cosmetics. The surfactant (E) has the effect of removing dirt from the skin and the effect of uniformly mixing and dispersing optional ingredients such as oils and fragrances in the composition to stabilize them. Examples of the surfactant (E) used in the present invention include anionic surfactants, cationic surfactants, imidazoline-based amphoteric surfactants, amphoteric surfactants, betaine-based surfactants, sorbitan fatty acid esters, glycerin fatty acid esters, propylene glycol fatty acid esters, glycerin alkyl ethers, POE sorbitan fatty acid esters, POE sorbitan fatty acid esters, POE glycerin fatty acid esters, POE fatty acid esters, POE alkyl ethers, POE alkylphenyl ethers, POE-POP alkyl ethers, POE castor oil-hydrogenated castor oil derivatives, sucrose fatty acid esters, and acylamino acid surfactants.For example, fatty acid soaps such as potassium laurate, potassium myristate, potassium coconut oil fatty acid, etc.; anionic surfactants such as potassium lauryl sulfate, alkyl sulfate triethanolamine ether, etc.; cationic surfactants such as benzalkonium chloride, stearyltrimethylammonium chloride, etc.; imidazoline-based amphoteric surfactants such as 2-cocoyl-2-imidazolinium hydroxide-1-carboxyethyloxy disodium salt, etc.; betaine-based surfactants such as alkylbetaine, amidobetaine, sulfobetaine, etc.; amphoteric surfactants such as lauramidopropylamine oxide, acylmethyltaurine, etc.; sorbitan fatty acid esters such as sorbitan monostearate, sorbitan sesquioleate, etc.; glycerin fatty acids such as glycerin monostearate, etc.; propylene glycol fatty acid esters such as propylene glycol monostearate, etc.; hydrogenated castor oil, etc. Examples of surfactants include corn oil derivatives, glycerin alkyl ethers, POE sorbitan fatty acid esters such as POE sorbitan monooleate and polyoxyethylene sorbitan monostearate, POE sorbitan fatty acid esters such as POE-sorbitol monolaurate, POE glycerin fatty acid esters such as POE-glycerin monoisostearate, POE fatty acid esters such as polyethylene glycol monooleate and POE distearate, POE alkyl ethers such as POE 2-octyldodecyl ether, POE alkyl phenyl ethers such as POE nonylphenyl ether, POE·POP alkyl ethers such as POE·POP 2-decyltetradecyl ether, POE castor oil / hydrogenated castor oil derivatives such as tetronic-type, POE castor oil, and POE hydrogenated castor oil, sucrose fatty acid esters, and nonionic surfactants such as alkyl glucosides. Nonionic surfactants are preferred for dispersion and stabilization. Anionic surfactants and acyl amino acid surfactants are preferred for removing dirt from the skin. Regardless of which surfactant is used, a smooth feeling can be obtained when it is used in combination with (B) isomalt. If you want to create a product that is particularly gentle on the skin, an acyl amino acid surfactant is suitable.To briefly explain acyl amino acid surfactants, the acyl group of an acyl amino acid surfactant can be a straight-chain acyl group derived from a saturated or unsaturated fatty acid having 8 to 22 carbon atoms. Examples of fatty acids include caprylic acid, capric acid, lauric acid, myristic acid, stearic acid, palmitic acid, oleic acid, linoleic acid, coconut oil fatty acid, palm fatty acid, palm kernel fatty acid, and hardened beef tallow fatty acid. One or more of these can be used in combination. Examples of amino acids that can be used in acyl amino acid surfactants include glycine, alanine, valine, leucine, isoleucine, serine, threonine, proline, β-alanine, α-aminobutyric acid, γ-aminobutyric acid, sarcosine, N-methyl-β-alanine, glutamic acid, and aspartic acid. Suitable acyl amino acid surfactants include acyl glutamates, acylaspartates, acylalanine salts, acylmethylalanine salts, and acylglycine salts. The salts are not particularly limited, and examples include alkali metal salts such as sodium salts and potassium salts, alkaline earth metal salts such as calcium salts and magnesium salts, inorganic salts such as aluminum salts and zinc salts, and organic salts such as organic amine salts with ammonia, monoethanolamine, diethanolamine, and triethanolamine, and basic amino acids such as arginine and lysine. One or a mixture of two or more of these can be used. Among these, alkali metal salts are preferred, and sodium salts and potassium salts are more preferred. Examples include sodium cocoyl glutamate, sodium cocoyl alanine, sodium cocoyl glycinate, potassium cocoyl glutamate, sodium lauroyl sarcosinate, sodium lauroyl methyl β-alanine, and sodium lauroyl aspartate. In the present invention, the (E) surfactant may be contained in an amount of 0.01 to 20% by mass relative to the total amount of the cosmetic. When the objective is to improve the dispersion and stability of the composition, a content of 0.01 to less than 1% by mass, and at most 1 to 2% by mass, relative to the total amount of the cosmetic is sufficient. When the objective is to achieve the effect of removing dirt from the skin, the (E) surfactant is preferably contained in an amount of 1 to 20% by mass relative to the total amount of the cosmetic, more preferably 1.5 to 20% by mass, even more preferably 2 to 18% by mass, and even more preferably 2.1 to 15% by mass. In the present invention, since the (A) silicates, which have the effect of adsorbing and removing dirt from the skin, are essential, it is uneconomical to incorporate more than 20% by mass of the (E) surfactant in the cosmetic in the hope of achieving the same effect of removing dirt from the skin.

[0016] By incorporating (B) isomalt, the cosmetic preparation of the present invention suppresses the stickiness characteristic of (E) surfactants that is felt during rinsing, achieving the desirable smooth feeling upon rinsing that is characteristic of cosmetics containing (A) silicates. This also results in a desirable moist feeling after rinsing. The incorporation of (B) isomalt does not have any negative effects on the cosmetic preparation of the present invention, and even when the blending amount of (E) surfactant is as low as 0.01% by mass, there are no problems with the feel during use, such as stickiness due to (B) isomalt. In conventional cosmetics that do not contain (B) isomalt, increasing the amount of (E) surfactant in the cosmetic increases the risk of a sticky feeling on the skin caused by the surfactant at a blending rate of approximately 1% by mass or more. In other words, without (B) isomalt, the pleasant smooth feeling that would have been obtained by rubbing the skin with a cosmetic that contains (A) silicates is eliminated, resulting in a sticky feeling. In contrast, in the present invention, as long as the (E) surfactant is incorporated at approximately 20% by mass relative to the total cosmetic weight, the composition of the present invention ensures that the skin remains smooth and silky, both during and after rinsing. After rinsing, the skin is left smooth, silky, and moisturized. The effects of the present invention are most pronounced when the (E) surfactant is incorporated at 1% by mass or more, or even 2.1% by mass or more, relative to the total cosmetic weight. In other words, when the (E) surfactant is incorporated at a range of 1 to 20% by mass, preferably 1.5 to 20% by mass, more preferably 2 to 18% by mass, and even more preferably 2.1 to 15% by mass, the significance of including (B) isomalt is most apparent within this range.

[0017] (F)Water The cosmetic of the present invention preferably contains water. The water (F) used in the present invention may be any water commonly used in cosmetics. Examples include ion-exchanged water, distilled water, and purified water. The amount of water relative to the total amount of the cosmetic of the present invention is not particularly limited, but from the viewpoint of usability, it is preferable to include 0.1 to 70% by mass, more preferably 30 to 60% by mass. However, water does not necessarily need to be added, for example, when thickening is achieved without water. For example, when thickening is achieved using a carboxyvinyl polymer (water-soluble polymer), glycerin (polyhydric alcohol), and a basic substance, or when thickening is achieved using silicates and ethanol or a polyhydric alcohol, additional water does not need to be added. So-called non-aqueous compositions (A+B+C+D+E) are within the scope of the present invention, as are compositions containing water (A+B+C+D+E+F).

[0018] The cosmetic composition of the present invention may contain any of oils, ethanol, titanium oxide, cosmetic ingredients, pigments, pH adjusters, preservatives, fragrances, and the like, as long as the effects of the present invention are not impaired.

[0019] Examples of oils include olive oil, camellia oil, macadamia nut oil, avocado oil, jojoba oil, beeswax, lanolin, liquid paraffin, paraffin, petrolatum, squalene, squalane, isopropyl myristate, 2-octyldodecyl myristate, cetyl 2-ethylhexanoate, methylpolysiloxane, methylphenylpolysiloxane, rosemary leaf oil, and lavender oil.

[0020] Examples of cosmetic ingredients include sodium hyaluronate, PCA-Na, Morus alba extract, aloe vera leaf extract, rosemary leaf extract, and dipotassium glycyrrhizinate.

[0021] In the present invention, a wash-off cosmetic refers to a cosmetic intended to be washed off within 30 minutes. Examples of such cosmetic include, but are not limited to, face pack cosmetics, massage cosmetics, and shaving cosmetics. Cosmetics and quasi-drugs containing keratolytic ingredients, such as glycolic acid, alpha hydroxy acid, salicylic acid, and trichloroacetic acid, in an amount of 2 to 20% by mass, are known as chemical peeling agents. Due to the properties of these ingredients, these ingredients chemically dissolve the stratum corneum, leaving the skin feeling extremely slimy, and therefore the effects of the present invention cannot be fully achieved.

[0022] The cosmetic of the present invention is preferably in a formulation having a viscosity or hardness that prevents dripping when applied to the skin. A gel or gel-like form is preferred. The viscosity of the cosmetic of the present invention, as measured using a B-type viscometer (25°C, No. 4 rotor or No. 3 rotor, 12 rpm, 30 seconds), is preferably 1000 mPa·s or higher, more preferably 2000 to 100,000 mPa·s, and even more preferably 5000 to 50,000 mPa·s. The hardness of the cosmetic of the present invention, as measured using a FUDOH rheometer manufactured by Rheotec Co., Ltd. under the following measurement conditions: RANGE: 200 g load, adapter: flat plate φ1 cm, sample stage speed: 6 cm / min, penetration width: 3 cm, at 25°C, is 1 to 100, more preferably 10 to 95.

[0023] The cosmetic preparation of the present invention can be produced by a conventional method. A water-soluble polymer such as a carboxyvinyl polymer may be mixed with a polyhydric alcohol, and then other ingredients may be added sequentially to the mixture, or all ingredients may be added to a container and then mixed and stirred. [Example]

[0024] The present invention will be specifically described below by preparing rinse-off cosmetic compositions of Examples and Comparative Examples and conducting evaluation tests using these compositions. <Examples and Comparative Examples> Cosmetics of the examples and comparative examples were prepared, and the skin feel of "smooth feeling" when rinsing, and the skin feel of "smooth and silky feeling" and "moist feeling" after rinsing were evaluated by sensory evaluation. 1. Test Method (1) Preparation of cosmetics Cosmetics of Examples and Comparative Examples having the compositions shown in Table 1 were prepared.

[0025] (2) Sensory evaluation test <Smooth skin feeling after rinsing> A specialist sensory evaluator spread approximately 0.5 g of the test product on the inside of the upper arm, then rinsed it off in a circular motion with running water, and evaluated the "smooth feeling" of the skin after rinsing according to the following criteria. ○: Leaves skin smooth when rinsed off △: Skin feels slightly smooth after rinsing, but not enough ×: Skin does not feel smooth when rinsed off (including products that make the skin feel slimy or squeaky). <Leaves skin feeling smooth, silky and moisturized after rinsing> A specialist sensory evaluator spread approximately 0.5 g of the test product on the inside of the upper arm, rinsed it off in a circular motion with running water, wiped off the moisture with tissue, and then, after 5 minutes, evaluated the skin's "smoothness and silkiness" and "moisture" according to the following criteria. (Smooth and silky feeling) ○: My skin became smooth and silky △: Skin is somewhat smooth, but not enough ×: Skin is not smooth (including the feeling that something is left on the skin (slimy, squeaky)). (Moisturizing) ○: Skin feels moisturized △: Skin was moisturized to some extent, but not enough ×: Skin is not moisturized

[0026] 2. Test Results The results of the sensory evaluation of <smooth feeling when rinsing> are shown in the lower part of Table 1. The evaluation results for <smooth and silky feeling after rinsing> and <moist feeling after rinsing> are shown in Table 2.

[0027] [Table 1]

[0028] [Table 1]

[0029] As shown in Table 1, all of the cosmetics of Examples 1 to 8 containing (B) Isomalt left the skin feeling smooth when rinsed off. On the other hand, all of the cosmetics of Comparative Examples 1 to 4 not containing (B) Isomalt left the skin feeling not smooth when rinsed off (Comparative Example 1), or slightly smooth but insufficiently so (Comparative Example 2). As shown in Table 2, all of the cosmetics of Examples 1 to 8 containing (B) isomalt left the skin smooth, silky, and moisturized after rinsing.

[0030] From the evaluation results of the Examples and Comparative Examples, it was found that when (B) Isomalt is included, a pleasant smooth feeling is felt when rinsing, and the skin becomes smooth, silky, and moisturized after rinsing.

[0031] Formulation example 1 (rinse-off type cosmetics) Mass % 1. Kaolin 2 2. Bentonite 5 3. Isomalt 2 4. Glycerin 15 5. Maltitol 10 6. Dipropylene Gray Recall 8 7. 1,2-Octanediol 2 8. Titanium dioxide 1 9. Potassium laurate 1.5 10. Potassium Myristate 1 11. Potassium Palmitate 1 12. Sodium Cocoamphoacetate 3 13. Potassium Cocoyl Glycinate 6 14. Sodium Cocoyl Alanine 3 15. Lauramidopropyl Hydroxysultaine 3 16. Lauramidopropylamine oxide 1.5 17. Hydroxypropyl methylcellulose 0.5 18.Wednesday 34.5 A cosmetic was obtained by mixing 1 to 18. The obtained cosmetic gave a pleasant smooth feeling when washed off, and after washing off, the skin was left smooth, silky, and moisturized.

Claims

1. A wash-off type skin cosmetic containing the following (A) to (E): (A) Silicates (B) Isomalt (C) Polyhydric alcohol other than isomalt (D) Water-soluble polymer (E) Surfactant

2. 2. The rinse-off skin cosmetic composition according to claim 1, wherein the silicates (A) are at least one selected from the group consisting of bentonite, montmorillonite, hectorite, stevensite, smectite, silicate (Na / Mg), kaolin, talc, mica, sodium silicate, magnesium silicate, calcium silicate, aluminum silicate, and silicic anhydride.

3. 3. The wash-off type skin cosmetic according to claim 1, wherein (B) isomalt is contained in an amount of 0.1 to 15% by mass based on the total amount of the cosmetic.

4. The rinse-off type skin cosmetic according to any one of claims 1 to 3, wherein (E) the surfactant is contained in an amount of 0.01 to 20% by mass based on the total amount of the cosmetic.

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