Tablet-type skin cleanser

Abstract

The present invention addresses the problem of providing a novel bubble-free tablet-like skin cleanser. As a solution, the present invention provides a tablet-like skin cleanser characterized by containing (A) to (C): (A) rod-like crystalline cellulose, (B) an anionic surfactant, and (C) at least one of acrylic ester crosslinkable polymer-2-sodium and sodium carboxymethyl starch.

Description

(19) State Intellectual Property Office (12) Invention Patent Application (10) Application Publication Number (43) Application Publication Date (21) Application Number 202511050863.4 (22) Application Date 2025.07.29 (30) Priority Data 2024-173113 2024.10.02 JP (71) Applicant: Fanco Co., Ltd. Address: 89-1 Yamashita-cho, Naka-ku, Yokohama City, Kanagawa Prefecture, Japan (72) Inventor: Emi Kuboyama (74) Patent Agency: Beijing Lianhelian Intellectual Property Agency Co., Ltd. 11278 Patent Attorney: Yang Fan, Zhang Yuan (51) Int.Cl. A61K 8 / 73 (2006.01) A61K 8 / 44 (2006.01) A61K 8 / 46 (2006.01) A61K 8 / 36 (2006.01) A61K 8 / 81 (2006.01) A61K 8 / 02 (2006.01) A61Q 19 / 10 (2006.01) (54) Invention Title: Tablet-shaped Skin Cleanser (57) Abstract: The object of the present invention is to provide a novel non-foaming tablet-shaped skin cleanser. As a solution, the present invention provides a tablet-shaped skin cleanser characterized in that it contains (A) ~ (C): (A) rod-shaped crystalline cellulose, (B) anionic surfactant, (C) acrylate crosslinking polymer-2-sodium, sodium carboxymethyl starch, or any one or more of these. Claims 1 page, Description 9 pages, CN 121774833 A 2026.04.03 CN 1 21 77 48 33 A 1. A tablet-shaped skin cleanser, characterized in that it contains (A)~(C): (A) rod-shaped crystalline cellulose, (B) anionic surfactant, (C) any one or more of acrylate crosslinking polymer-2-sodium and carboxymethyl starch sodium. 2. The tablet-shaped skin cleanser according to claim 1, characterized in that it contains (D) other crystalline cellulose. 3. The tablet-shaped skin cleanser according to claim 1 or 2, characterized in that the total crystalline cellulose, i.e., A+D, is 45% by mass or more relative to the whole. 4. The tablet-shaped skin cleanser according to claim 1 or 2, characterized in that the ratio of (A) rod-shaped crystalline cellulose to total crystalline cellulose, i.e., A / (A+D), is 15% by mass or more. 5. The tablet-shaped skin cleanser according to claim 1 or 2, characterized in that (C) accounts for 0.5% to 15% by mass relative to the whole. Claims 1 / 1 page 2 CN 121774833 A Tablet-shaped skin cleanser Technical field

[0001] The present invention relates to a tablet-shaped (tablet-like) skin cleanser.Background Art

[0002] It is known to be a tablet-shaped skin cleanser (hereinafter also referred to as a tablet cleanser) formed by compressing powder. Tablet cleansers are designed to disintegrate rapidly upon contact with water and have excellent usability, such as rapid foaming or foam volume. In order to improve the disintegration of tablet cleansers, for example, Patent Documents 1 and 2 propose to formulate carbonates and acids as foaming components, Patent Document 3 proposes to set the porosity to a macroporosity of 15% or more, and Patent Document 4 proposes to formulate croscarmellose sodium as a disintegrant.

[0003] In recent years, non-foaming skin cleansers have attracted attention as skin cleansers. However, the inventors have found that there are currently no non-foaming tablet-shaped skin cleansers on the market.

[0004] Patent Documents Patent Document 1: Japanese Patent Application Publication No. 62-030197 Patent Document 2: Japanese Patent Application Publication No. 5-247495 Patent Document 3: Japanese Patent Application Publication No. 10-183198 Patent Document 4: Japanese Patent Application Publication No. 2007-126574 Summary of the Invention The object of the present invention is to provide a novel non-foaming tablet-shaped skin cleanser.

[0005] The method for solving the object of the present invention is as follows.

[0006] 1. A tablet-shaped skin cleanser, characterized in that it contains (A) to (C): (A) rod-shaped crystalline cellulose, (B) an anionic surfactant, (C) any one or more of acrylate crosslinking polymer-2-sodium and sodium carboxymethyl starch.

[0007] 2. The tablet-shaped skin cleanser according to 1., characterized in that it contains (D) other crystalline cellulose.

[0008] 3. The tablet-shaped skin cleanser according to 1 or 2, characterized in that the proportion of total crystalline cellulose (A+D) relative to the whole is 45% by mass or more.

[0009] 4. The tablet-shaped skin cleanser according to any one of 1 to 3, characterized in that the proportion of (A) rod-shaped crystalline cellulose relative to total crystalline cellulose (A+D) (A / (A+D)) is 15% by mass or more.

[0010] 5. The tablet-shaped skin cleanser according to any one of 1 to 4, characterized in that the proportion of (C) relative to the whole is 0.5% by mass or more and 15% by mass or less.

[0011] According to the present invention, a non-foaming tablet-shaped skin cleanser as an unprecedented novel skin cleanser can be provided. The tablet-shaped skin cleanser of the present invention not only has excellent formability and disintegration properties, but can also form a smooth paste with excellent thickness and extensibility.

[0012] Since the skin cleanser of the present invention is in tablet form and does not contain water, it can be made without preservatives. Because the skin cleanser of this invention is in tablet form, it is easy to carry and store. The manufacturing process of the skin cleanser of this invention uses a small amount of water, which also has potential from the perspective of water resource conservation.Instruction Manual 1 / 9 Page 3 CN 121774833 A Detailed Embodiments

[0013] The tablet-shaped skin cleanser of the present invention contains one or more of (A) rod-shaped crystalline cellulose, (B) anionic surfactant, (C) acrylate crosslinking polymer-2-sodium, and sodium carboxymethyl starch. Because the tablet-shaped skin cleanser of the present invention contains these (A), (B), and (C) components, it has excellent formability and disintegration properties, and when water is added, it can obtain a high-quality paste with excellent feel during application.

[0014] (A) Rod-shaped crystalline cellulose The tablet-shaped skin cleanser of the present invention contains (A) rod-shaped crystalline cellulose. Furthermore, in this specification, rod-shaped crystalline cellulose refers to crystalline cellulose with an aspect ratio (long axis / short axis) of 3 or more. The tablet-shaped skin cleanser of the present invention, by containing rod-shaped crystalline cellulose with an aspect ratio (long axis / short axis) of 3 or more, can form a paste with excellent thickness and extensibility, and a smooth texture. In this invention, the aspect ratio of the rod-shaped crystalline cellulose is preferably 3.2 or more, more preferably 3.5 or more, further preferably 4.0 or more, and even more preferably 4.2 or more.

[0015] The particle size of the rod-shaped crystalline cellulose is preferably 30 μm or more and 80 μm or less. When the particle size is less than 30 μm, the thickness of the paste may be reduced, and when it exceeds 80 μm, a rough feeling may sometimes occur. The particle size of the rod-shaped crystalline cellulose is more preferably 35 μm or more, further preferably 40 μm or more, and even more preferably 70 μm or less, and even more preferably 60 μm or less.

[0016] In addition, the aspect ratio is generally obtained by electron microscopy observation of the powder, while the particle size is a value obtained by sieving tests, electron microscopy observation, particle size distribution measurement by laser diffraction / scattering method, etc. In this invention, the aspect ratio (major axis / minor axis) of the crystalline cellulose is the average value calculated by observing more than 1000 crystalline cellulose particles using an electron microscope. For particles with an area ranging from large to small (100 to 200 particles), the length of the longest axis (major axis) from end to end of the particle is taken as the major axis, and the length of the particle in the direction perpendicular to the major axis at the center of the major axis is taken as the minor axis. Furthermore, the particle size is the value calculated as a cumulative 50% by weight in a sieve analysis test (Japanese Industrial Standard JIS Z 8815).

[0017] The angle of repose of the rod-shaped crystalline cellulose is preferably 46 degrees or more. By formulating rod-shaped crystalline cellulose with an angle of repose of 46 degrees or more, there is a tendency to increase the thickness of the paste. The angle of repose of the rod-shaped crystalline cellulose is more preferably 47 degrees or more, further preferably 48 degrees or more, and even more preferably 49 degrees or more.

[0018] The water absorption of the rod-shaped crystalline cellulose is preferably 200% (w / w) or more. Rod-shaped crystalline cellulose with a water absorption rate of over 200% has good hydrophilicity, thus easily producing a smooth paste.The water absorption of rod-shaped crystalline cellulose is more preferably 210% (w / w) or more, and even more preferably 220% (w / w) or more. In this invention, the water absorption is a value calculated by means of an oil absorption test based on the pigment test method (Japanese Industrial Standard JIS K 5101-13).

[0019] As rod-shaped crystalline cellulose, rod-shaped crystalline cellulose used as a pharmaceutical additive or food additive can be used without any limitation. For example, commercially available products such as "CEOLUS ST-02", "CEOLUS ST-100", and "CEOLUS OD-20F" sold by Asahi Kasei Corporation, "VIVAPUR CS 20 FM" sold by Rettenmaier Japan, and "Comprecel 101" sold by Fushimi Pharmaceutical Co., Ltd. can be used. In addition, rod-shaped crystalline cellulose can be one or more rod-shaped crystalline celluloses with different aspect ratios, particle sizes, angles of repose, water absorption, etc.

[0020] (D) Other crystalline celluloses The tablet-shaped skin cleanser of the present invention may contain (D) other crystalline celluloses with an aspect ratio of less than 3.

[0021] Wherein, when the tablet-shaped skin cleanser of the present invention contains (D) other crystalline celluloses, the ratio of (A) rod-shaped crystalline cellulose to total crystalline cellulose (A+D) (A / (A+D)) is preferably 15% by mass or more. When the ratio of (A) rod-shaped crystalline cellulose to total crystalline cellulose is less than 15% by mass, the good creamy texture of the formulation based on (A) rod-shaped crystalline cellulose may sometimes be reduced. (A) The proportion of rod-shaped crystalline cellulose to total crystalline cellulose is more preferably 20% by mass or more, further preferably 30% by mass or more, even more preferably 40% by mass or more, even more preferably 50% by mass or more, more preferably 60% by mass or more, even more preferably 70% by mass or more, even more preferably 80% by mass or more, even more preferably 90% by mass or more, even more preferably 95% by mass or more, even more preferably 98% by mass or more, even more preferably 99% by mass or more.

[0022] The proportion of total crystalline cellulose (A+D, where (D) is arbitrary) in the tablet-shaped skin cleanser of the present invention is not particularly limited, but is preferably 45% by mass or more relative to the whole. When the proportion of total crystalline cellulose is less than 45% by mass, the formability may sometimes decrease. The proportion of total crystalline cellulose to the whole is more preferably 50% by mass or more, further preferably 60% by mass or more, even more preferably 70% by mass or more. Furthermore, the upper limit of the proportion of total crystalline cellulose relative to the whole is not particularly limited as long as the effect of the present invention can be achieved. For example, it can be set to 95% by mass or less, 90% by mass or less, 85% by mass or less, etc.

[0023] (B) Anionic surfactants Examples of anionic surfactants include higher fatty acid salts, N-acylglycine salts, N-acylglutamate salts, N-acylalanine salts, N-acylhydroxyethanesulfonate, N-acylmethyltaurate, monoalkyl phosphates, ether carboxylates, alkyl sulfonates, sulfosuccinates, etc.

[0024] Examples of acyl groups in the above-mentioned N-acyl anionic surfactants include: octanoyl, decanoyl, lauroyl, myristoyl, palmitoyl, stearoyl, oleoyl, linoleoyl, etc. Acyl groups can also be derived from mixed fatty acids; specific examples include coconut oil fatty acid acyl (cocoyl), palm oil fatty acid acyl, palm kernel oil fatty acid acyl, tallow fatty acid acyl, etc. As salts, examples include alkali metal salts such as sodium and potassium, alkanolamine salts such as triethanolamine, basic amino acid salts such as lysine and arginine, etc.

[0025] One type of anionic surfactant can be used, and two or more different anionic surfactants can also be used together.

[0026] The content of component (B) in the tablet-shaped skin cleanser of the present invention is not particularly limited, but is preferably 0.5% by mass or more and 20% by mass or less relative to the whole. When the content of component (B) is less than 0.5% by mass, the cleansing power may be insufficient, and when it exceeds 20% by mass, it may be difficult to obtain a good paste. The proportion of component (B) relative to the whole is more preferably 1% by mass or more, more preferably 2% by mass or more, more preferably 15% by mass or less, more preferably 10% by mass or less, and even more preferably 5% by mass or less.

[0027] Other surfactants In addition to the anionic surfactant (B), the tablet-shaped skin cleanser of the present invention can also be formulated with other surfactants such as amphoteric surfactants, cationic surfactants, and nonionic surfactants.

[0028] When the tablet-shaped skin cleanser of the present invention contains other surfactants, it is preferable to contain 50% by mass or more of the anionic surfactant (B) relative to the total surfactants. (B) When the amount of anionic surfactant is less than 50% by mass, usability may sometimes decrease. (B) The proportion of anionic surfactant relative to the total surfactant is more preferably 60% by mass or more, more preferably 70% by mass or more, even more preferably 80% by mass or more, even more preferably 90% by mass or more, and even more preferably 95% by mass or more.

[0029] (C) Sodium acrylate crosslinker-2- and sodium carboxymethyl starch (C) are water-soluble polymers. The tablet-shaped skin cleanser of the present invention, by containing either (C) sodium acrylate crosslinker-2- or sodium carboxymethyl starch, or both, exhibits excellent disintegration properties and can form a good paste.

[0030] The content of component (C) in the tablet-shaped skin cleanser of the present invention is not particularly limited, but is preferably 0.5% by mass or more and 15% by mass or less relative to the whole. When the content of component (C) is less than 0.5% by mass, the quality of the paste may sometimes decrease, and when it exceeds 15% by mass, the ease of rinsing may sometimes decrease. The proportion of component (C) relative to the whole is more preferably 1% by mass or more as stated on page 3 / 9 of the specification, CN 121774833 A, further preferably 2% by mass or more, and even more preferably 10% by mass or less, further preferably 7% by mass or less, and even more preferably 5% by mass or less.

[0031] Other formulation ingredients The tablet-shaped skin cleanser of the present invention may also contain polyols, sugars, sugar alcohols, preservatives, metal ion chelating agents, active ingredients, extenders (excipients), disintegrants, lubricants, fragrances, etc., without impairing the effects of the present invention.

[0032] Examples of polyols, sugars, and sugar alcohols include glycerol, diglycerol, 1,3-butanediol (BG), propylene glycol, dipropylene glycol, 1,2-pentanediol, sorbitol, mannitol, galactose, galactitol, maltose, trehalose, erythritol, xylose, xylitol, sucrose, lactose, lactitol, and difructose anhydride.

[0033] Examples of preservatives include methylparaben and ethylparaben. Since the tablet-shaped skin cleanser of the present invention is water-free, bacteria do not easily multiply. Therefore, the amount of preservative is preferably 0.5% by mass or less, more preferably 0.1% by mass or less, and most preferably free of preservatives.

[0034] Examples of metal ion chelating agents include disodium ethylenediaminetetraacetate, ethylenediaminetetraacetic acid, sodium ethylenediaminetetraacetate, and other ethylenediaminetetraacetic acid salts.

[0035] Examples of active pharmaceutical ingredients include, for example, vitamin C derivatives such as L-ascorbic acid, L-ascorbic acid phosphate, L-ascorbic acid monopalmitate, L-ascorbic acid dipalmitate, and L-ascorbic acid-2-glucoside; whitening agents such as glutathione and Saxifraga stolonifera extract; skin activators such as royal jelly and beech extract; blood circulation promoters such as capsaicin, gingerone, cantharides tincture, caffeine, tannic acid, and γ-oryzanol; anti-inflammatory agents such as glycyrrhizic acid derivatives and chamomile; and enzymes such as proteases and lysozyme chloride.

[0036] Examples of additives (excipients) include, for example, lactose, magnesium aluminosilicate, calcium silicate, talc, kaolin, silicon dioxide, mica, zeolite, bentonite, titanium dioxide, and dextrin.

[0037] Examples of disintegrants include cross-linked carboxymethyl cellulose, hydroxypropyl cellulose, hydroxypropyl methyl cellulose, polyvinyl alcohol, polyacrylic acid, sodium polyacrylate, polymethacrylic acid, gum arabic, gelatin, agar, pullulan, and cross-linked polyvinylpyrrolidone.

[0038] Examples of lubricants include calcium stearate, stearase, and sucrose esters.

[0039] The tablet-shaped skin cleanser of the present invention can be tableted using known methods.

[0040] In the examples, the ingredients were mixed in the mass ratios shown in Tables 1-4 and tableted at a pressure of 300 kg to prepare a tablet-shaped skin cleanser (approximately 800 mg). The ingredients used are shown below.

[0041] (A) Rod-shaped crystalline cellulose Rod-shaped crystalline cellulose 1 [4.36, 50 μm, 49 degrees, 230%, 0.21 g / cm3] (manufactured by Asahi Kasei Corporation, CEOLUS ST-02) Rod-shaped crystalline cellulose 2 [4.70, 50 μm, 57 degrees, 290%, 0.12 g / cm3] (manufactured by Asahi Kasei Corporation, CEOLUS ST-100) (D) Other crystalline cellulose Crystalline cellulose 1 [2.45, 90 μm, 42 degrees, 240%, 0.29 g / cm3] (manufactured by Asahi Kasei Corporation, CEOLUS UF-F702) Crystalline cellulose 2 [2.57, 50 μm, 34 degrees, 240%, 0.23 g / cm3] (manufactured by Asahi Kasei Corporation, CEOLUS UF-F711) Instruction manual 4 / 9 pages 6 CN 121774833 A Crystalline cellulose 3 [2.37, 50μm, 45°C, 200%, 0.29g / cm3] (manufactured by Asahi Kasei Corporation, CEOLUS PH-101) Crystalline cellulose 4 [2.05, 90μm, 42°C, 200%, 0.31g / cm3] (manufactured by Asahi Kasei Corporation, CEOLUS PH-102) Crystalline cellulose 5 [1.97, 170μm, 36°C, 200%, 0.34g / cm3] (manufactured by Asahi Kasei Corporation, CEOLUS PH-200) Crystalline cellulose 6 [2.20, 50μm, 41°C, 150%, 0.41g / cm3] (manufactured by Asahi Kasei Corporation, CEOLUS FD-301) [ The values ​​within [] represent aspect ratio, average particle size (μm), angle of repose (degrees), water absorption (% (w / w)), and bulk density (g / cm3).

[0042] (B) Anionic surfactants: Sodium lauroyl glutamate (manufactured by Asahi Kasei Finechem Co., Ltd., Aminosurfact ALMS-P1) Sodium lauroyl aspartate (manufactured by Asahi Kasei Finechem Co., Ltd., AminoFoamer FLMS-P1) Potassium cocoyl glycinate (manufactured by Ajinomoto Co., Ltd., AMILITE GCK-11) Sodium cocoyl hydroxyethanesulfonate (Innospec Performance Chemicals, Pureact I-78) Potassium myristate (manufactured by MIYOSHI Oils Co., Ltd., COSMETICSOAP MF-K) (C) Sodium acrylate crosslinker-2- (manufactured by Toa Synthetic Co., Ltd., ARON NT-Z) Sodium carboxymethyl starch (Rettenmaier Japan Co., Ltd., VIVASTAR CS352SV) Other water-soluble polymeric sodium carbomer (sodium polyacrylate) (manufactured by Sumitomo Chemical Co., Ltd., AQUPEC) MG N40R) Sodium polyacrylate (Sensient Technologies Japan, COVACRYL MV 60) Polyvinyl alcohol (Mitsubishi Chemical Corporation, Gohsenol EG-05) PVP (Ashland Specialty Ingredients, PVP K-30) Magnesium stearate (Nippon Oil Co., Ltd., Magnesium Stearate-S) Silica (Saint-Gobain Boron Nitride, AEROSIL R812) Mannitol (Mitsubishi Corporation, Marincrystal) "Evaluation Method" The following evaluation was performed on the obtained tablet-shaped skin cleanser. The evaluation results are shown in Tables 1 to 4.

[0043] · Formability Take the tablet-shaped skin cosmetic in your hand, observe its appearance visually, and evaluate its formability according to the following criteria.

[0044] <Evaluation Criteria> ○: The tablet surface is glossy and without defects, and it can still maintain its tablet shape after observation.

[0045] ×: The tablet surface is powdery, has defects, or cannot maintain its tablet shape after observation.

[0046] • Disintegration: Divide the tablet-shaped skin cleanser in half, add 2.5 mL of water, let stand for 5 seconds, then apply with the palm of your hand, and evaluate the disintegration according to the following criteria. In addition, those with a disintegration evaluation of "×" were not evaluated further.

[0047] <Evaluation Criteria> ○: Disintegrates within 5 seconds of standing. Instructions for use, page 5 / 9, CN 121774833 A

[0048] △: Disintegrates upon application.

[0049] ×: There are still clumps remaining after application.

[0050] • Usability: Divide the tablet-shaped skin cleanser in half, add 2.5 mL of water, let stand for 5 seconds, then apply with the palm of your hand. Evaluate usability according to the following criteria.

[0051] <Evaluation Items> 1) Spreadability (whether a smooth and easily spreadable paste can be obtained) ○: Smooth, can be spread evenly.

[0052] △: Slightly rough, but still can be spread evenly.

[0053] ×: Not smooth, difficult to spread evenly.

[0054] 2) Massage properties during application (whether the paste feels thick and easy to massage) ○: Feels thick and easy to massage.

[0055] △: Slightly thick but acceptable.

[0056] ×: No thick feeling, difficult to massage.

[0057] 3) Irritation during application (whether there is a grainy feeling during application, and whether physical irritation to the skin is felt) ○: No irritation.

[0058] △: Slight irritation but acceptable.

[0059] ×: Irritation.

[0060] 4) Rinseability (How quickly can it be rinsed clean with water after use?) 〇: Rinse quickly.

[0061] △: Rinse slowly but acceptable.

[0062] ×: Rinse slowly.

[0063] 5) Moisturizing sensation after rinsing (After rinsing, is there no tightness but a feeling of moisture?) 〇: Moisturizing sensation.

[0064] △: Basically no moisturizing sensation but acceptable.

[0065] ×: No moisturizing sensation.

[0066] [Table 1] Instruction manual, page 6 / 9, CN 121774833 A

[0067] [Table 2]

[0068] [Table 3] Instruction manual, page 7 / 9, CN 121774833 A

[0069] [Table 4]

[0070] "Results" The tablet-shaped skin cleansers obtained in the examples containing rod-shaped crystalline cellulose have excellent usability, especially a thick, creamy texture.

[0071] The tablet-shaped skin cleansers obtained in Comparative Examples 1-6, which contain only non-rod-shaped crystalline cellulose, have poor usability, especially a lack of thickness in the cream. Furthermore, the tablet-shaped skin cleansers obtained in Comparative Examples 7-10, which do not contain component (C), have poor disintegration properties.

[0072] As specific examples of tablet-shaped skin cleansers, formulation examples are shown below. According to formulation examples 1 to 3, a tablet-shaped skin cleanser with excellent formability, disintegration, and the ability to form a smooth paste with excellent thickness and spreadability can be obtained, which also has excellent usability.

[0073] [Formulation Example 1] Tablet Mask Ingredient Quantities (mass %): Rod-shaped crystalline cellulose 77.05, Sodium lauroyl glutamate 2.00, Sodium stearoyl glutamate 0.80, Sodium cocoyl glutamate 0.20, Potassium cocoyl glycinate 2.00, Mannitol 13.00, Sodium acrylate crosslinker-2- 4.00, Protease 0.10, Lipase 0.10, Magnesium stearate 0.25, Silica 0.50. [Formulation Example 2] Tablet Mask Ingredient Quantities (mass %): Rod-shaped crystalline cellulose 79.65, Sodium lauroyl glutamate 3.00, Sodium cocoyl ethanesulfonate 1.00, Pullulan 0.50, Mannitol 5.00, Glucose 7.00, Sodium carboxymethyl starch 3.00, Charcoal 0.10. Magnesium stearate 0.25 Silica 0.50 [Formulation Example 3] Tablet Mask Ingredient Mixing Amount (mass %) Rod-shaped crystalline cellulose 72.35 Sodium lauroyl glutamate 1.90 Sodium lauroyl aspartate 1.50 Sodium stearoyl glutamate 1.60 Sodium cocoyl glutamate 0.40 Sodium acrylate crosspolymer-2- 3.00 Agar 0.50 Mannitol 14.00 Maltitol 4.00 Magnesium stearate 0.25 Silica 0.50 Instructions 9 / 9 Page 11 CN 121774833 A Our Ref : HKP / 2026 / 95475 ty * (Draft) * 14 May 2026 Title : TABLET-TYPE SKIN CLEANSER Abstract The objective of the present invention is to provide a novel, non-foaming tablet-type skin cleanser. As a solution, the present invention provides a tablet-type skin cleanser characterized by containing (A)~(C): (A) rod-shaped crystalline cellulose, (B) anionic surfactant, and (C) at least one of sodium acrylate cross-linked polymer-2 and sodium carboxymethyl starch. Abstract.

Claims

1. A tablet-shaped skin cleanser, characterized in that, Contains (A) ~ (C): (A) Rod-shaped crystalline cellulose, (B) Anionic surfactants, (C) Sodium 2-acrylate cross-linked polymer and sodium carboxymethyl starch.

2. The tablet-shaped skin cleanser according to claim 1, characterized in that, It contains (D) other crystalline cellulose.

3. The tablet-shaped skin cleanser according to claim 1 or 2, characterized in that, Total crystalline cellulose, i.e., the ratio of A+D to the whole, is more than 45% by mass.

4. The tablet-shaped skin cleanser according to claim 1 or 2, characterized in that, (A) The ratio of rod-shaped crystalline cellulose to total crystalline cellulose, i.e., A+D, i.e., A / (A+D), is 15% or more by mass.

5. The tablet-shaped skin cleanser according to claim 1 or 2, characterized in that, (C) The proportion relative to the whole is more than 0.5% by mass and less than 15% by mass.