Cleansing and care composition, preparation method thereof, and cleansing and care tablet

Abstract

Disclosed are a cleansing and care composition, a preparation method thereof and a cleansing and care tablet. A cleansing and care composition, wherein a raw material for preparing the cleansing and care composition includes the following components in parts by mass: amino acid surfactant: 10-30 parts; anionic surfactant: 1-20 parts; plant polysaccharide: 15-45 parts; shape promoting agent: 5-15 parts; nonionic surfactant: 1-10 parts; amphoteric surfactant: 0.5-5 parts; plant extract: 0.5-5 parts; humectant: 0.5-5 parts; chelating agent: 0.1-5 parts; essence: 0-5 parts; enzymatic preparation: 0-5 parts; and water: 20-105 parts. The cleansing and care tablet produced in the present application possesses low-irritation and mild properties, can be directly contacted with skin, exhibits a moderate dissolution rate and moderate cleansing power, and can be applicable to fields including hair washing, bathing, facial cleansing, hand washing, intimate apparel cleaning, baby and maternity textile cleaning, and toy cleaning.

Claims

1. A cleansing and care composition, wherein a raw material for preparing the cleansing and care composition comprises the following components in parts by mass: amino acid surfactant: 10-30 parts; anionic surfactant: 1-20 parts; plant polysaccharide: 15-45 parts; shape promoting agent: 5-15 parts; nonionic surfactant: 1-10 parts; amphoteric surfactant: 0.5-5 parts; plant extract: 0.5-5 parts; humectant: 0.5-5 parts; chelating agent: 0.1-5 parts; essence: 0-5 parts; enzymatic preparation: 0-5 parts; and water: 20-100 parts; wherein a mass ratio of the amino acid surfactant to the anionic surfactant is (1.5-14):1, a ratio of a total mass of the amino acid surfactant, the anionic surfactant, the nonionic surfactant, and the amphoteric surfactant to a mass of the plant polysaccharide is (0.8-3.5):1, and a mass ratio of the plant polysaccharide to the shape promoting agent is (1-6):1; wherein the amino acid surfactant comprises at least two of sodium lauroyl/cocoyl methylaminopropionate, sodium lauroyl/cocoyl methyltaurate, sodium cocoyl apple amino acid, sodium lauroyl aspartate, sodium lauroyl/cocoyl glycinate, sodium lauroyl/cocoyl glutamate, or sodium lauroyl/cocoyl sarcosinate; wherein the plant polysaccharide comprises at least two of alginate, pectin, xanthan gum, guar gum, hydroxypropyl starch ether, methyl cellulose, hydroxyethyl cellulose, konjac glucomannan, hydroxypropyl methyl cellulose, or pullulan; wherein the shape promoting agent is a C.sub.3-C.sub.8 polyol.

2. The cleansing and care composition according to claim 1, wherein the anionic surfactant comprises at least one of sodium alkyl glycoside sulfosuccinate, sodium -olefin sulfonate, or sodium alkyl hydroxyethyl sulfonate.

3. The cleansing and care composition according to claim 1, wherein the nonionic surfactant comprises at least one of C.sub.8-18 alkyl glycoside, sophorolipid, rhamnolipid, lauramidopropyl/cocamidopropyl amine oxide, or sucrose fatty acid ester; and the amphoteric surfactant comprises at least one of lauramidopropyl/cocamidopropyl hydroxysultaine, lauramidopropyl/cocamidopropyl betaine, cocamidoethyl betaine, lauryl/cocoyl hydroxysultaine, sodium lauroyl/cocoyl amphoacetate, or sodium lauroyl/cocoyl amphopropionate.

4. The cleansing and care composition according to claim 1, wherein the chelating agent comprises at least one of sodium citrate, sodium gluconate, tetrasodium glutamate diacetate, trisodium methylglycine diacetate, sodium polyaspartate, or sodium polyglutamate.

5. The cleansing and care composition according to claim 1, wherein the humectant comprises at least one of allantoin, dextran, biomimetic phospholipid, trehalose, or water-soluble olive oil.

6. A method for preparing the cleansing and care composition according claim 1, comprising the following steps: mixing the plant polysaccharide with the shape promoting agent under stirring to wet a solid powder of the plant polysaccharide with the shape promoting agent to obtain a premix; mixing the anionic surfactant and the amino acid surfactant with a pre-heated water, and after standing until completely dissolved into a homogeneous phase, adding the premix in batches under stirring to obtain a mixture; and adding the nonionic surfactant and the amphoteric surfactant to the mixture; adding the chelating agent to adjust a value of pH to 5.5-7; adding the plant extract and continuing stirring; adding the humectant and continuing the stirring; and adding the enzymatic preparation in liquid form and the essence to obtain the cleansing and care composition.

7. A cleansing and care tablet, wherein the cleansing and care tablet is produced by drying and then slicing the cleansing and care composition according to claim 1; wherein, when the enzymatic preparation in the cleansing and care composition is in solid form, the enzymatic preparation is not added when preparing the cleansing and care composition, but is instead sprinkled onto sliced tablets.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is an enlarged micro-configuration of a cleansing and care tablet in Application Example 1 of the present application.

(2) FIG. 2 is a configuration of the cleansing and care tablet after being folded in half in Application Example 1 of the present application.

(3) FIG. 3 is an enlarged micro-configuration of a cleansing and care tablet in Comparative Application Example 1 of the present application.

(4) FIG. 4 is a configuration of the cleansing and care tablet after being folded in half in Comparative Application Example 1 of the present application.

(5) FIG. 5 is a configuration of a cleansing and care tablet in Comparative Application Example 2 of the present application.

(6) FIG. 6 is a configuration of a cleansing and care tablet in Comparative Application Example 3 of the present application.

(7) FIG. 7 is a configuration of a cleansing and care tablet in Comparative Application Example 4 of the present application.

DETAILED DESCRIPTION

(8) The present application is further described in detail below with reference to FIGS. 1-7.

Example 1

(9) A cleansing and care composition, wherein a raw material for preparing the cleansing and care composition included the following components in parts by mass: amino acid surfactant: 28 parts; anionic surfactant: 2 parts; nonionic surfactant: 3 parts; amphoteric surfactant: 3 parts; plant polysaccharide: 45 parts; shape promoting agent: 9 parts; plant extract: 1.8 parts; humectant: 1 parts; chelating agent: 0.8 parts; enzymatic preparation: 0.5 part; and water: 100 parts.

(10) Specifically, the amino acid surfactant consisted of 14 parts of sodium lauroyl methylaminopropionate and 14 parts of sodium lauroyl sarcosinate; the anionic surfactant was 2 parts of sodium alkyl polyglucoside sulfosuccinate; the nonionic surfactant was sophorolipid; the amphoteric surfactant was cocamidopropyl hydroxysultaine; the plant polysaccharide consisted of 30 parts of alginate and 15 parts of hydroxyethyl cellulose; the shape promoting agent consisted of 4 parts of propylene glycol and 5 parts of glycerol;

(11) The plant extract consisted of 0.1 part of Plukenetia volubilis fruit extract, 0.1 part of Theobroma grandiflorum seed extract, 0.1 part of Orbignya oleifera kernel extract, 1 part of Oryza sativa bran extract, and 0.5 part of Sapindus mukorossi fruit extract; the humectant consisted of 0.5 part of allantoin and 0.5 part of biomimetic phospholipid; the chelating agent consisted of 0.4 part of sodium polyaspartate and 0.4 part of sodium polyglutamate; the enzymatic preparation was cellulase enzyme.

(12) A method for preparing the cleansing and care composition, which included the following steps: the plant polysaccharide was mixed with the shape promoting agent under stirring to wet a solid powder of the plant polysaccharide with the shape promoting agent to obtain a premix; the anionic surfactant and amino acid surfactant were mixed with the water at 50 C., after standing until completely dissolved into a homogeneous phase, the premix was added in batches and stirred at a rotating speed of 1050 r/min for 15 minutes, so that the plant polysaccharide absorbed water sufficiently and swelled to provide viscosity for the slurry to obtain a mixture, wherein the viscosity of the mixture was controlled to be 100005000 mpa.Math.S; and the nonionic surfactant and the amphoteric surfactant were added to the mixture; the chelating agent was added to adjust a value of pH to 5.5-7; the plant extract was added and continued stirring; the humectant was added and continued the stirring; and the enzymatic preparation and the essence were added to obtain the cleansing and care composition.

Examples 2 to 7

(13) The difference between Examples 2 to 7 and Example 1 of the cleansing and care compositions lies in that the raw materials for preparing the cleansing and care compositions are different, and the specific raw materials are as shown in Table 1.

(14) TABLE-US-00001 TABLE 1 Parts by mass Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Example 7 Plant Alginate 30.00 10.00 24.00 5.00 polysaccharide Xanthan Gum 10.00 3.00 Guar gum 10.00 Hydroxypropyl starch ether 7.00 5.00 3.00 Methylcellulose 5.00 10.00 3.00 5.00 Hydroxyethyl cellulose 15.00 5.00 Pectin 5.00 Hydroxypropyl 1.00 methylcellulose Pullulan 5.00 5.00 Konjac glucomannan 2.00 Amino acid Sodium lauroyl 14.00 2.00 2.00 5.00 15.00 surfactant methylaminopropionate Cocoyl 5.00 3.00 5.00 4.00 methylaminopropionate Sodium cocoyl apple amino 11.00 2.00 10.00 5.00 acid Sodium lauroyl aspartate 1.00 1.00 2.00 2.00 Sodium lauroyl glycinate 6.00 1.00 5.00 1.00 Sodium lauroyl glutamate 12.00 3.00 Sodium lauroyl sarcosinate 14.00 6.00 15.00 3.00 4.00 4.00 Anionic Sodium -olefin sulfonate 4.00 8.00 4.00 10.00 surfacant Sodium alkyl polyglucoside 2.00 2.00 1.00 1.00 2.00 sulfosuccinate Sodium alkyl hydroxyethyl 8.00 5.00 10.00 8.00 sulfonate Nonionic Decyl glucoside 2.00 1.00 8.00 surfactant Sophorolipid 3.00 5.00 1.00 5.00 1.50 Lauramidopropyl/cocamido 2.00 1.00 3.00 propyl amine oxide Sucrose fatty acid ester 2.00 Rhamnolipid 5.00 Amphoteric Cocoamidopropyl betaine 2.00 1.00 1.00 1.00 surfactant Cocamidopropyl 3.00 3.00 1.00 1.00 hydroxysultaine Cocoamidoethyl betaine 1.00 1.00 1.00 Sodium alkyl 2.00 1.00 1.00 amphopropionate Sodium alkyl amphoacetate 1.00 1.00 1.00 Plant extract Plukenetia volubilis fruit 0.10 0.50 extract Theobroma grandiflorum 0.10 0.10 0.50 0.10 0.50 seed extract Orbignya oleifera kernel 0.10 0.10 1.00 extract Oryza sativa bran extract 1.00 1.00 0.10 1.00 Sapindus mukorossi fruit 0.50 1.00 1.00 extract Camellia oleifera seed cake 0.50 0.50 extract Matricaria chamomilla 0.50 0.50 1.00 flower extract Aloe barbadensis leaf extract 1.00 Humectant Allantoin 0.50 1.00 0.50 0.50 0.50 1.00 Dextran 1.00 0.50 1.00 biomimetic phospholipid 0.50 0.50 0.50 1.50 Trehalose 0.50 0.50 1.50 Shape Propylene glycol 4.00 2.00 1.00 3.00 promoting Glycerol 5.00 4.00 2.00 5.00 agent Butandiol 5.00 4.00 2.00 4.00 Hexanediol 7.00 4.00 Heptanediol 2.00 Chelating Sodium citrate 2.00 agent Sodium polyaspartate 0.40 3.00 Sodium polyglutamate 0.40 0.20 0.50 Sodium gluconate 0.20 Tetrasodium glutamate 0.15 diacetate Trisodium methylglycine 0.20 0.20 diacetate Enzymatic Protease 1.5 1 2 0.5 preparation Cellulase 0.5 Amylase 0.5 1 0.5 Essence 0.20 0.20 1.00 3.00 Water 100.00 30.00 65.00 74.00 45.00 100.00 90.00 Total surfactant: plant polysaccharide 0.80 1.35 1.90 1.24 3.31 1.90 3.5 Amino acid surfactant: anionic surfactant 14 2.75 2.13 10.50 1.86 2.00 1.5 Plant polysaccharide: shape promoting agent 5.00 3.40 2.86 4.17 1.23 6.00 1.66

Comparative Example 1

(15) A composition consisting of the following raw materials by mass percentages: surfactant: 35%; polyvinyl alcohol: 24%; polyvinylpyrrolidone: 3%; essence: 0.100; pigment: 0.2%; Aloe vera oil: 0.2%; Cucumber oil: 0.2%; Nano-composite powder: 9%; and a balance of deionized water.

(16) In the nano-composite powder, the raw materials are calculated by mass percentage based on 100% total nano-composite powder, including 58% nano-grade titanium dioxide, 36% nano-grade zinc oxide, and 6% nano-silver.

(17) In the surfactant, the raw materials are calculated by mass percentage based on 100% total surfactant, including 13% decyl glucoside, 25% sodium lauroyl glutamate, 14% sodium lauryl sulfate, 9% cocamidopropyl betaine, 25% dodecyl diethanolamine, 5% sodium pyrrolidone carboxylate, 2% isopropyl palmitate, 2% sodium lauryl glucose carboxylate, and 5% behenyl trimonium chloride.

(18) A method for preparing the composition, which included the following steps: the polyvinyl alcohol and polyvinylpyrrolidone were mixed and stirred with the water at 90 C. for dissolution; each component of the nano-composite powder was separately dispersed and dissolved in an equivalent mass of water; and the above materials were then mixed and stirred until uniform.

Comparative Example 2

(19) The difference from Example 1 lies in that the raw material for preparing the cleansing and care composition is different, specifically as follows: the addition amount of the plant polysaccharide was 7 parts, and the plant polysaccharide was the hydroxyethyl cellulose; in Comparative Example 2, a ratio of a total mass of the amino acid surfactant, the anionic surfactant, the nonionic surfactant, and the amphoteric surfactant to a mass of the plant polysaccharide was 5.1:1.

Comparative Example 3

(20) The difference from Example 1 lies in that the raw material for preparing the cleansing and care composition is different, specifically as follows:

(21) An addition amount of the glycerol was 16 parts so that a total addition amount of the shape promoting agent was 20 parts, and in Comparative Example 3, a mass ratio of the plant polysaccharide to the shape promoting agent was 2.25:1.

Comparative Example 4

(22) The difference from Example 1 lies in that the raw material for preparing the cleansing and care composition is different, specifically as follows:

(23) An addition amount of the glycerol was 0 parts so that a total addition amount of the shape promoting agent was 4 parts, and in Comparative Example 4, a mass ratio of the plant polysaccharide to the shape promoting agent was 11.25:1.

Comparative Example 5

(24) The difference from Example 1 lies in that the raw material for preparing the cleansing and care composition is different, specifically as follows:

(25) An addition amount of the alginate was 50 parts, an addition amount of the water is 105 parts, and a ratio of a total mass of the amino acid surfactant, the anionic surfactant, the nonionic surfactant and the amphoteric surfactant to a mass of the plant polysaccharide was 0.55:1.

Comparative Example 6

(26) The difference from Example 1 lies in that the raw material for preparing the cleansing and care composition is different, specifically as follows:

(27) An addition amount of the sodium alkyl polyglucoside sulfosuccinate was 1.4 parts, resulting in a total addition amount of the anionic surfactant of 1.4 parts, wherein a mass ratio of the amino acid surfactant to the anionic surfactant was 20:1.

Application Example 1

(28) A cleansing and care tablet produced by drying and then slicing the cleansing and care composition prepared in Example 1.

(29) The drying method was a casting method, specifically the slurry was cast, conveyed in parallel and then formed through air-blowing drying equipment.

Application Examples 2 to 7

(30) The difference between Application Examples 2 to 7 to Application Example 1 of the cleansing and care tablets lies in that the cleansing and care tablets of Application Examples 2 to 7 were respectively formed by drying and then slicing the cleansing and care compositions prepared in Examples 2 to 7.

Comparative Application Example 1-Comparative Application Example 6

(31) The difference between Comparative Application Examples 1 to 6 of the cleansing and care tablets and Application Example 1 lies in that the cleansing and care tablets of Comparative Application Examples 1 to 6 were respectively formed by drying and then slicing the cleansing and care compositions prepared in Comparative Examples 1 to 6.

(32) The cleansing and care tablets prepared in Application Examples 1 to 7 were well-formed without powder loss and brittleness, wherein the microscopic view of the cleansing and care tablet in Application Example 1 is as shown in FIG. 1. Application Example 1 uses the plant polysaccharide as the film-forming agent. The overall structure of the cleansing and care tablet in Application Example 1 exhibits an irregularly distributed pattern resembling natural fibers, where a porous network structure or minor inhomogeneities are observable. Modification groups in the film-forming agent disrupt the regularity of molecular chains, significantly reducing crystallinity, which renders the cleansing and care tablet more flexible and readily dissolvable compared to PVA-based tablets.

(33) Furthermore, after folding the cleansing and care twice and then unfolding, the cleansing and care table shows no damage with imperceptible creases. The cleansing and care tablet after being folded in half in Application Example 1 is as shown in FIG. 2.

(34) This demonstrates that while using amino acid surfactant as the main surfactant, the cleansing and care tablet of the present application achieves successful forming with excellent flexibility. Moreover, the film-forming agent contains no petroleum-based polyethylene glycol or polyvinyl alcohol, thereby ensuring environmental compatibility.

(35) Comparative Application Example 1 uses petrochemical-sourced polyvinyl alcohol as the film-forming agent. The pore distribution of the cleansing and care tablet in Comparative Application Example 1 exhibits greater density and uniform smoothness due to the relatively ordered molecular chains of PVA, where hydroxyl groups form strong intramolecular and intermolecular hydrogen bonds; and unmodified PVA develops well-defined crystalline regions, as shown in FIG. 3. Even when rapidly dried during the film-forming process, the film typically contains a high proportion of crystalline regions. These crystalline regions act like physical crosslinking points, providing strength and rigidity, but also contributing to the brittleness.

(36) In Comparative Example 1, although the cleansing and care tablet produced could be formed, the flexibility was poor. After folding the cleansing and care tablet twice and then unfolding, the creases were clearly visible, and the cleansing and care tablet could not return to the original shape, as shown in FIG. 4.

(37) In Comparative Example 2, the product could not form a tablet after drying and instead appeared granular, as shown in FIG. 5.

(38) In Comparative Example 3, the cleansing and care tablet produced could not be dried into a tablet, as the cleansing and care tablet absorbed moisture severely, as shown in FIG. 6.

(39) In Comparative Example 4, the cleansing and care tablet produced exhibited significant brittleness, fracturing directly upon being folded once, as shown in FIG. 7.

(40) In Comparative Example 5, the cleansing and care tablet produced showed severe brittleness and could not dissolve completely when immersed in water.

(41) In Comparative Example 6, low viscosity of the slurry prevented the formation of a tablet.

(42) The results of these comparative examples demonstrate that, through the proportional combination of the plant polysaccharide, amino acid surfactant, and other surfactants, the present application overcomes the issue of mutual interference between surfactant micelles, thereby achieving a well-formed and highly flexible cleansing and care tablet.

(43) Performance Test

(44) The cleansing and care tablets prepared in the Application Examples and Comparative Application Examples were subjected to the following tests.

(45) 1. Fabric Stain-Removing Test.

(46) The detergency is determined according to GB/T 13174-2021 Determination of detergency and cycle of washing property for laundry detergents, the washing water is 250 mg/kg CaCl.sub.2 hard water, the test cloth is national standard carbon black JB-01 dirty cloth, national standard protein JB-02 dirty cloth and national standard sebum JB-03 dirty cloth. The stain-removing ratio (Pi) was determined at a sample concentration of 0.050, with a 0.2 standard liquid detergent as a control, wherein when Pi1.0 was qualified, Pi<1.0 was unqualified. The results are as shown in Table 2.

(47) TABLE-US-00002 TABLE 2 Stain-removing results National National National standard standard standard carbon protein- sebum- black-soiled soiled soiled fabric fabric fabric Determination Application 1.59 1.32 1.88 Qualified Example 1 Application 1.56 1.43 1.93 Qualified Example 2 Application 1.44 1.34 1.84 Qualified Example 3 Application 1.20 3.29 1.87 Qualified Example 4 Application 1.62 1.59 1.86 Qualified Example 5 Application 1.48 2.87 1.73 Qualified Example 6 Application 1.52 2.04 1.76 Qualified Example 7 Comparative 1.13 1.05 1.30 Qualified Application Example 1
2. Skin Moisture and Sebum Content Test.

(48) Test subjects: a total of 100 volunteers aged 22 to 30 were selected and divided into 10 groups, with 10 volunteers in each group. The cleansing and care table product was used to the same area on the inner side of the volunteers' arms. During the test, no cosmetics other than the test product were allowed to be used.

(49) Test Process: before use, the test skin area was rinsed with clean water and gently patted dry with a towel until no surface moisture remained. After waiting for 10 minutes, a skin moisture analyzer was used to measure the sebum and moisture content of the volunteers' skin. After cleansing with the cleansing and care table product, the skin was gently patted dry with a towel until no surface moisture remained. After another 10-minute wait, the sebum and moisture content were measured again using the skin moisture analyzer.

(50) The moisture content change rate (WE %) was used to evaluate the product's exfoliation effect, and the sebum content change rate (OE %) was used to evaluate the product's oil-removal effect. The specific calculation formulas are as follows:
Moisture Content Change Rate (WE %)=[(Moisture content after using the productMoisture content before using the product)/Moisture content before using the product]100%;
Sebum Content Change Rate (OE %)=[(Sebum content after using the productSebum content before using the product)/Sebum content before using the product]100%;

(51) For each group, the average WE % and OE % of the 10 volunteers were calculated and recorded as the group's WE % and OE %. The overall average WE % and OE % of the exfoliating cleansing tablet were then determined by averaging the WE % and OE % values across all 10 groups. The results are as shown in Table 3.

(52) TABLE-US-00003 TABLE 3 Changes in skin moisture and sebum content WE mean (%) OE mean (%) Application 24.13 8.33 Example 1 Application 13.64 6.67 Example 2
3. Product Safety Test.

(53) In vitro skin irritation test was conducted, the human skin model test was conducted according to OECD TG 439. The test results are as shown in Table 4.

(54) TABLE-US-00004 TABLE 4 In vitro skin irritation test results Blank- Blank- corrected corrected Relative OD.sub.570 OD.sub.570 Mean mean value mean value viability Hole 1 Hole 2 value (inter-well) (inter-group) % Mean value Conclusion Blank 0.050 0.048 0.049 PBS 1.463 1.493 1.478 1.429 1.412 0.017 101.2 100.0 1.2 Non- solution of 1.487 1.400 1.444 1.395 98.8 irritating negative 1.462 1.461 1.462 1.413 100.0 control group 5% lauryl 0.06 0.062 0.061 0.012 0.01 0.002 0.8 0.7 0.1 Irritating sodium 0.058 0.056 0.057 0.008 0.6 sulfate 0.062 0.058 0.060 0.011 0.8 solution of positive control group Application 0.83 0.824 0.827 0.778 0.776 0.003 55.1 54.9 0.2 Non- Example 1 0.813 0.830 0.822 0.773 54.7 irritating 0.827 0.824 0.826 0.777 55.0 Comparative 0.460 0.505 0.483 0.434 0.447 0.014 29.8 Irritating Application 0.467 0.525 0.496 0.447 30.7 30.7 0.9 Example 1 0.495 0.524 0.510 0.461 31.7

(55) In vitro skin corrosion test was conducted. The reconstructed human epidermis (RhE) test was conducted according to OECD TG 431 (2019), with classification determined in compliance with GB/T 26396-2011 Technical specification for safety of soaps and detergents. The test results are as shown in Table 5.

(56) TABLE-US-00005 TABLE 5 In vitro skin corrosion test results Processing Mean Mean Group time absorbance viability (%) Conclusion Negative control 240 min 1.5674 0.0619 100.00 3.95 Non- group (0.9% 60 min 1.3091 0.0215 100.00 1.64 corrosive NaCl) 3 min 1.5314 0.0136 100.00 0.89 Positive control 240 min 0.0449 0.0142 2.86 0.91 Corrosive group (glacial acetic acid) Application 240 min 1.6020 0.0206 102.21 1.32 Non- Example 2 60 min 1.2689 0.0584 96.93 4.46 corrosive 3 min 1.5158 0.0272 98.99 1.78
5. Degradation Test.

(57) The test was conducted according to the method in Appendix A of Test Method for Biodegradability of Surfactants (GB/T 15818-2018), with compliance determined based on the requirement in Technical specification for safety of soaps and detergents (GB/T 26396-2011) that the primary biodegradation degree of surfactants shall not be less than 90%. The test results are as shown in Table 6.

(58) TABLE-US-00006 TABLE 6 Degradability results The average biodegradation degree at Day 7 (D7 %) Reference object 98.7 (Sodium linear dodecylbenzene sulfonate) Application Example 1 99.9 Application Example 2 99.7 Comparative Application 88.2 Example 1

(59) Based on the comprehensive test results, it can be concluded that the cleansing and care composition prepared in the examples can achieve excellent cleansing and care tablet formation effects while containing amino acid surfactants. The cleansing and care tablet exhibits high flexibility, strong stain-removing capability, no skin irritation, and demonstrates both exfoliation and oil-removal effects, thereby satisfying skin cleansing requirements. Furthermore, by replacing petroleum-based polyvinyl alcohol with bio-based plant polysaccharides, the cleansing and care tablet complies with current environmental protection standards for cleaning products.

(60) This specific embodiment is provided solely for explaining the present application and shall not be construed as limiting the present application. Any person skilled in the art may, after reading this specification, make modifications to this specific embodiment as needed without creative contribution, provided that such modifications fall within the scope of the claims of the present application and shall be protected under patent law.