Sulfate-free washing and care two-in-one shampoo powder and preparation method thereof

Abstract

The invention belongs to the field of new materials for daily use chemicals, and discloses sulfate-free washing and care two-in-one shampoo which comprises the following components in parts by weight: 45-60% of a surfactant; 25-40% of solid powder grease; 2-10% of a conditioner; and 3-20% of an anti-caking agent. The formula provided by the invention has the advantages that the specific solid grease powder is used for providing a grease source for the shampoo powder, so that the combing property and the hair nourishing effect of hair are improved; meanwhile, the solid grease powder can serve as a coating agent to coat the conditioner, and the conditioning effect of the shampoo powder is improved while the quick release effect of the conditioner is guaranteed; meanwhile, due to reasonable selection of the surfactant, the stability of the system is maintained, and after the surfactant is applied to the hair, a stable emulsification environment can be provided for the quickly released conditioner and the subsequently released vegetable fat; in addition, the invention also discloses a preparation method of the shampoo powder.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of new daily chemical materials, in particular to a sulfate-free shampoo and conditioner in one powder and a preparation method thereof. BACKGROUND

[0002] The current mainstream hair cleaning products are mainly shampoo and shampoo soap. Liquid shampoo is not convenient for travel and business trips, and liquid is usually restricted on flights. In addition, its high water content is combined with plastic packaging, which consumes a lot of production and transportation, and wastewater discharge also pollutes water bodies. The problem of shampoo soap is also prominent. In a hard water environment, the fatty acid salt can form soap scum with calcium and magnesium ions, adhere to the scalp and block the hair follicles. The pH value of shampoo soap is generally 9-10, which is far beyond the normal weak acid range of the scalp (5.0-5.6), and long-term use can destroy the acid-base balance, weaken the barrier function, and increase the risk of infection. In addition, the hair is prone to dryness and stickiness when used, and needs to be combined with a conditioner, which is complicated and difficult to wash off, and the experience is not good. These problems highlight the need to develop new hair care products such as shampoo powder. Most of the current shampoo powder technology uses pure natural plant powder, which has a high cost and a low amount of added oil, and the smoothing effect is not as good as traditional smoothing shampoo.

[0003] The patent application with the publication number CN112089671A, entitled "Shampoo and conditioner in one camellia shampoo powder and preparation method thereof", uses modified corn starch 35-70 parts, camellia seed cake extract 1-12 parts, and a variety of plant extracts to prepare a shampoo and conditioner in one camellia shampoo powder. However, this formula has a high cost, which is not conducive to large-scale market promotion. On the other hand, the oil absorption capacity of modified corn starch is strong, and the hair is prone to knotting when rinsing.

[0004] After studying several shampoo powder formulas disclosed in the prior art, we found that the main washing principle of the mainstream shampoo powder is roughly two or a combination of the two: 1. Using starch-based substances to absorb oil from the hair, focusing on dry cleaning; 2. Using a large amount of plant extracts to achieve hair care effects.

[0005] The prior art almost theoretically proves that the path of developing shampoo powder by relying on the development idea of traditional shampoo formula is not feasible.

[0006] How to exist in shampoo powder (if used in existing shampoo powder, it will be absorbed by starch-based substances, reducing the effect of starch itself) of traditional shampoo containing conditioning agents, especially liquid oil-soluble conditioning agents; in addition, most of the existing shampoo powder is oil-free shampoo powder, and how to improve the combing property of the hair is also a difficult problem to solve. SUMMARY

[0007] The present application aims to provide a sulfate-free shampoo and conditioner in one powder, the advantages of the formula of the present application are as follows: the use of specific solid oil powder provides the source of oil for the shampoo powder, improves the combing property and hair care effect of the hair; at the same time, the solid oil powder itself can be used as a coating agent to coat the conditioning agent, which can ensure the quick release effect of the conditioning agent and improve the conditioning effect of the shampoo powder; at the same time, the reasonable selection of the surfactant of the present application can maintain the stability of the system, and when it is applied to the hair, it can provide a stable emulsification environment for the quick release of the conditioning agent and the subsequent release of the plant oil.

[0008] In addition, the present application also discloses a preparation method of the shampoo powder.

[0009] To achieve the above-mentioned purpose, the present application discloses: A sulfate-free shampoo and conditioner in one powder, comprising the following components in parts by weight: 45-60% of surfactant; 25-40% of solid powder oil; 2-10% of conditioning agent; 3-20% of anti-caking agent; preferably, the amount of the anti-caking agent is 3-9.5%; The surfactant is in a powder state, the active content is greater than or equal to 80wt%, and the surfactant comprises a sulfonate surfactant and an amino acid salt surfactant, and does not contain a sulfate surfactant; the amino acid salt surfactant is one or more combinations of sodium methyl lauroyl taurate, sodium methyl cocoyl taurate, sodium methyl oleoyl taurate, sodium methyl palmitoyl taurate, sodium methyl myristoyl taurate and sodium cocoyl taurate; it should be noted that sodium methyl lauroyl taurate, sodium methyl cocoyl taurate and the like are a kind of special amino acid surfactant, which is not a typical amino acid surfactant, and contains a taurine part, which is a long-chain acyl amino acid surfactant The solid powder oil is composed of a shell material and plant oil coated in the shell material; the shell material comprises malt dextrin and sodium caseinate; The conditioning agent at least comprises a liquid hair conditioning agent; Preferably, the amount of the solid powder oil is 30-35%.

[0010] The core innovation points of the present application include the following three points: 1. Reasonable use of surfactant The present application uses sulfonate surfactants and amino acid salt surfactants containing taurine and long-chain alkyl, the use of the two surfactants can effectively improve the foaming stability of the hair powder, and is mild; More specifically, compared with liquid shampoo, when the hair powder is washed, the microenvironment of the hair powder when it meets water can be regarded as a super-concentrated system, in which the conditioning agent is quickly released and accompanied by the release of oil, requiring the surfactant to have high dispersing ability; through the final experimental results, the surfactant of the present application can specifically adapt to the use of solid powder oil and conditioning agent, and has good foaming ability and elution ability; 2. Ingenious use of specific encapsulated plant oil; In the present application, the use of plant oil is to improve the combing property of hair and improve the hair nourishing effect, so as to improve the brightness of hair; in order to achieve this purpose, the present application uses malt dextrin and sodium caseinate material shell material, which has the advantages of dissolving in water, building an effective oxygen barrier layer to prevent the oxidation of plant oil; At the same time, the encapsulated plant oil and surfactant have good compatibility and almost no effect on the performance of the surfactant; 3. The solid powder oil and the conditioning agent are pre-mixed, and the conditioning agent is coated or loaded on the surface of the solid powder oil.

[0011] The use of the conditioning agent is to improve the conditioning property of the hair; The use of the conditioning agent will bring another problem: without the encapsulated solid powder oil, it is easy to form a lump, especially in the presence of an anti-caking agent, there is still no improvement.

[0012] The present application realizes effective coating of the conditioning agent by pre-mixing the solid powder oil and the conditioning agent, and maintains the uniformity of the powder form of the system; At the same time, it is found in the additional research of the present application that if the conditioning agent and the plant oil are simultaneously coated in the shell material, the conditioning performance of the hair powder will be weakened, and the possible reason is that the performance of the conditioning agent requires that the conditioning agent can be quickly dispersed into the emulsion system, and when it and the plant oil are simultaneously dispersed into the emulsion system, the conditioning property is affected; Through the above optimization, the product of the present application has the following characteristics: good conditioning performance such as good hair combing effect and good hair nourishing effect; at the same time, the hair powder of the present application has good foaming performance when washing hair, the emulsion system is stable, and the elution effect is good when eluting.

[0013] In the above shampoo powder, the sulfonate surfactant is one or more of sodium lauryl methyl hydroxyethyl sulfonate, sodium cocoyl isethionate, sodium lauryl isethionate, and sodium alpha-olefin sulfonate in combination; In the above shampoo powder, the weight ratio of the sulfonate surfactant and the amino acid salt surfactant is 25-50:5-25, preferably, the weight ratio of the two is 30-35:13-18.

[0014] In the above shampoo powder, the surfactant further comprises cocamidopropyl betaine; the amount of the cocamidopropyl betaine is 1-5wt% of the total amount of the surfactant, preferably, the ratio of the sulfonate surfactant, the amino acid salt surfactant, and the cocamidopropyl betaine is 30-35:13-18:2.

[0015] In the above shampoo powder, the solid powder oil is composed of the following components: 30-40wt% malt dextrin, 5-15wt% sodium caseinate, 40-60wt% vegetable oil, 1-4wt% thickening agent, 1-6wt% emulsifier, 0.1-1wt% dispersant; The particle size of the solid powder oil is 50-150 mesh.

[0016] In the above shampoo powder, the vegetable oil is one or more of coconut oil, jojoba oil, jojoba seed oil, white pool flower seed oil, and marula seed oil in combination; The thickening agent is dipotassium hydrogen phosphate; The emulsifier is one or more of polyglycerol fatty acid ester, mono-diglycerol fatty acid ester, and glycerol stearate SE in combination; The dispersant is silicon dioxide.

[0017] In the above shampoo powder, the liquid hair conditioner is one or more of dimethyl silicone oil, amino-terminated silicone oil, quaternary ammonium salt-modified silicone oil, quaternary ammonium salt-80, and polyquaternary ammonium salt in combination.

[0018] In the above shampoo powder, the conditioner further comprises a powder conditioner, the powder conditioner is at least one of microcrystalline cellulose, cellulose, cationic cellulose, and cationic guar gum; the amount of the powder conditioner is 0-87.5wt% of the total amount of the conditioner, preferably, the amount of the powder conditioner is 70-87.5wt% of the total amount of the conditioner.

[0019] In the above shampoo powder, the anti-caking agent is at least one of sorbitol and corn starch; The shampoo powder further comprises a suitable amount of pH adjuster and fragrance.

[0020] Meanwhile, the application also discloses a preparation method of the shampoo powder, comprising the following steps: (1) adding solid powder grease and conditioning agent into a reactor and mixing and stirring uniformly; (2) adding surfactant and anti-caking agent and adjusting pH value of the system, and mixing and stirring uniformly; The preparation method of the solid powder grease is as follows: (1) preparation of water phase solution: taking sodium caseinate, malt dextrin and thickening agent, dispersing in 60-70 DEG C water and stirring to dissolve fully; preparation of oil phase solution: taking vegetable grease and emulsifier, mixing and melting at 70-80 DEG C fully; (2) slowly adding the oil phase solution into the water phase solution, fully stirring and emulsifying to obtain emulsion; (3) after dispersing and homogenizing the emulsion, homogenized emulsion is obtained; (4) adding dispersant and performing spray drying to obtain vegetable grease powder grease.

[0021] The application has at least the following beneficial effects: 1. good stability and appearance not easy to cake; 2. the formula contains a large amount of vegetable grease and other conditioning agents, which improves the dryness problem of traditional shampoo powder and has good conditioning performance; 3. reasonable surfactant combination, good foaming and stable foaming performance, and good cleaning and conditioning. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 The photos of example 1 and comparative example 3 after storage for 30 days (25 DEG C). DETAILED DESCRIPTION

[0023] The application will be described clearly and completely in combination with the embodiments of the application, and in the description of the application, it should be noted that the specific conditions not mentioned in the embodiments are carried out according to conventional conditions or manufacturer's recommended conditions. The reagents or instruments not mentioned by the manufacturer are conventional products that can be purchased in the market.

[0024] First part: introduction of raw materials The raw materials used in the application are from the following suppliers: Dimethyl silicone oil: purity 100%, 300,000 viscosity, Guangzhou Rui Xing Chemical Technology Co., Ltd.; Ammonia end silicone oil: bis-ammonia propyl polydimethylsiloxane, purity 100%, Guangzhou Rui Xing Chemical Technology Co., Ltd.; Quaternary ammonium salt-80: purity 50%, Resoft 80, Guangzhou Rui Xing Chemical Technology Co., Ltd.; Polyquaternium-10: Resoft 400, Guangzhou Rui Xing Chemical Technology Co., Ltd. Cationic guar gum: Resoft 13S, Guangzhou Rui Xing Chemical Technology Co., Ltd. Sodium cocoyl isethionate: purity 85%, Remild 85, Guangzhou Rui Xing Chemical Technology Co., Ltd. Sodium methyl lauroyl taurate: purity ≥90%, Guangzhou Tianci High-tech Materials Co., Ltd. Cocamidopropyl betaine: purity ≥90%, Guangzhou Xingye Science and Technology Co., Ltd. Sodium methyl cocoyl taurate: Remild 85, purity 85%, Guangzhou Rui Xing Chemical Technology Co., Ltd. Sodium lauroyl sarcosinate: Remild LS95, purity 95%, Guangzhou Rui Xing Chemical Technology Co., Ltd.

[0025] Second part Preparation of solid powder oil The preparation method of the solid powder oil is as follows: (1) Preparation of aqueous solution: Take sodium caseinate, maltodextrin, thickening agent, and disperse in 65℃ water, and stir to dissolve fully; Preparation of oil phase solution: Take vegetable oil and emulsifier, mix and melt at 70-80℃ fully; (2) Slowly add the oil phase solution to the aqueous solution, and fully stir to emulsify to obtain an emulsion; (3) After the above emulsion is dispersed and homogenized, a homogenized emulsion is obtained; (4) Add a dispersing agent and spray dry to obtain a vegetable oil powder.

[0026] The formula of the solid powder oil is shown in Table 1; Table 1 Formula Table Unit wt%

[0027] The emulsifier is polyglyceryl fatty acid ester and monoglyceride fatty acid ester, and the ratio of each is 1.5:1; the thickening agent is dipotassium hydrogen phosphate; and the dispersing agent is silicon dioxide.

[0028] It should be noted that the selection of the emulsifier, thickening agent and dispersing agent within a reasonable range will not have a decisive influence on the performance of the solid oil powder, therefore, only specific compounds are used in this part for experiments, and it has been verified in the preliminary experiments that conventional similar aids in the art can be applied to the present application.

[0029] Third part Preparation of shampoo powder The preparation method of the shampoo powder is as follows: (1) Add solid powder oil, liquid conditioning agent and proper fragrance into the reactor and mix them well; (2) Add surfactant, powder conditioning agent, anti-caking agent, proper pH regulator and fragrance into the reactor and mix them well.

[0030] In each case, the fragrance is a conventional technology and does not affect the experimental results. In each case, the amount of fragrance used is 1wt%; the pH regulator is used to adjust the pH of the system to 4.0-7.0 (the pH described herein refers to the pH presented when the shampoo powder is dispersed in water to test in a normal shampooing state).

[0031] The amounts of each substance used in the present application are shown in Table 2. Table 2 Formulation Table Unit: wt%

[0032] The surfactants used in the above Examples 1-7 are: sulfonate surfactant - sodium cocoyl isethionate and amino acid salt surfactant - sodium methyl cocoyl taurate, and the amount of the two is 35:15.

[0033] Other embodiments of the present application refer to the formulation of Example 1, except that the amount of surfactant is different, and the type of surfactant is different; the specific amounts are shown in Table 3. Table 3 Formulation Table Unit: wt% Surfactant composition Ratio Example 8 Sodium cocoyl isethionate: Sodium methyl cocoyl taurate: Cocamidopropyl betaine 35:13:2 Example 9 Sodium cocoyl isethionate: Sodium methyl cocoyl taurate: Cocamidopropyl betaine 30:18:2 Example 10 Sodium lauroyl isethionate: Sodium methyl lauroyl taurate: Cocamidopropyl betaine 35:13:2

[0034] The comparative examples of the present application are as follows: Comparative Example 1 Generally the same as Example 1, except that the surfactant used in this comparative example is all sodium cocoyl isethionate.

[0035] Comparative Example 2 Generally the same as Example 1, except that the surfactant used in this comparative example is sulfonate surfactant - sodium cocoyl isethionate and amino acid surfactant - sodium lauroyl methyl amino acid, and the amount of the two is 35:15.

[0036] Comparative Example 3 Generally the same as Example 1, except that this comparative example does not use solid oil powder; The amounts of each substance are: coconut oil 17.5wt%, dimethyl silicone oil 1wt%, amino silicone oil 0.5wt%, cationic cellulose 0.5wt%, cationic guar gum 3.5wt%, surfactant 50wt%, sorbitol 27wt%.

[0037] The preparation method of this sample is: (1) Coconut oil, 1wt% dimethyl silicone oil, amino silicone oil and sorbitol were added to the reactor and mixed and stirred uniformly; (2) Surfactants, cationic cellulose, cationic guar gum, and appropriate amounts of pH adjuster and fragrance were added and mixed and stirred uniformly.

[0038] Comparative Example 4 The difference between the present application and Example 1 is that the liquid conditioning agent and vegetable oil are coated together in the shell material.

[0039] The preparation method of the solid oil powder is as follows: (1) Preparation of aqueous solution: sodium caseinate, maltodextrin, thickening agent were dispersed in 65℃ water and stirred to dissolve completely; Preparation of oil phase solution: plant oil and liquid conditioning agent, emulsifier were mixed and melted at 75℃; (2) The oil phase solution was slowly added to the aqueous solution, and the emulsion was obtained by stirring and emulsifying; (3) The emulsion was dispersed and homogenized to obtain a homogenized emulsion; (4) Then, a dispersing agent was added and spray dried to obtain a powder of plant oil + liquid conditioning agent.

[0040] Performance test Stability test: The above samples were placed at different temperatures and observed for one month to observe the caking condition. The results are shown in Table 4 and Figure 1 .

[0041] Foam abundance and fineness test: According to GB / T 13173 "Surface active agent Detergent test method", 150ppm hard water and 0.25% concentration of shampoo powder were prepared, and the water bath temperature was kept at 40℃±0.5℃ for 1h. The initial foam height and foam height after 5min were recorded by using a Ross foam instrument (40℃±0.5℃ constant temperature). The results are shown in Table 5.

[0042] Combability test: The samples of Example 1 and Comparative Example 4 were sent to an external laboratory for cosmetic hair care efficacy test. The test project was based on T / GDCDC 022-2022 "Hair combing efficacy test method", which mainly detected the improvement of hair strand wet combing force. The detection agency name was Guangzhou Huamao Detection Service Co., Ltd., and the detection report number was 2601WH135-01A. The test results are shown in Table 6.

[0043] Volunteer test: 30 volunteers with healthy hair, aged 20-60 years old, 15 males and 15 females, were recruited to conduct half-head test. The shampoo powder formulations of Example 1, Example 9, Comparative Example 1 and Comparative Example 4 were tested, a total of 4 groups of samples. 15 people were tested for each sample, and the head was washed every two days, and the use was persisted for 1 week. The volunteers scored according to the wet hair smoothness, dry hair smoothness, foam abundance, and overall evaluation (10-point system, 10 points for satisfaction, 5 points for general, and 0 points for dissatisfaction); the results are shown in Table 7.

[0044] Table 4 Caking test results Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Example 7 Example 8 Example 9 Example 10 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 5°C (30 days) Stable Stable Stable Stable Stable Stable Stable Stable Stable Stable Stable Stable Caking Stable 25°C (30 days) Stable Stable Stable Stable Stable Stable Stable Stable Stable Stable Stable Stable Caking Stable 45°C (30 days) Stable Stable Stable Stable Stable Stable Stable Stable Stable Stable Stable Stable Caking Stable

[0045] According to the results in Table 4, the sample without oil coating showed overall caking.

[0046] Table 5 Foam test results Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Example 7 Example 8 Example 9 Example 10 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Instantaneous foam height 85 90 90 85 88 82 82 86 92 96 94 70 75 87 Foam height after 5 min 72 74 70 72 75 75 73 72 70 70 63 50 45 72

[0047] According to the test results in Table 5, the sample without oil coating showed significantly poor foaming performance, and the foaming performance of the samples using single surfactant and traditional amino acid surfactant was also inferior to that of the examples of the present application, indicating that the selection of surfactant significantly affects the foaming performance of the shampoo powder. Generally, the use of these surfactants will have good foaming effect in classic liquid formulations, but in powder products, the microenvironment of water is a super-concentrated system, and oil significantly affects the performance of surfactants, so the requirements for the selection of surfactants become higher. For the case of liquid conditioner and oil coating, the foaming performance is not affected.

[0048] Table 6 Combability test results Example 1 Comparative Example 4 Wet hair improvement 69.659% 56.964% Dry hair improvement 18.462% 10.909%

[0049] According to the external inspection results, the case of co-coating liquid conditioner is not conducive to the performance of the conditioner, and the possible reason is that the performance of the conditioner depends on the foaming and film-forming of the surfactant, and after being coated, the conditioning performance is significantly inhibited.

[0050] Table 7 Consumer test results Example 1 Example 9 Comparative Example 1 Comparative Example 4 Wet hair smoothness 9 9.5 6 8 Dry hair smoothness 10 10 5.5 7.5 Foam richness 9 10 5 8.5 Overall score 9 9.5 5 7.5

[0051] From the stability, the present application can effectively improve the caking of the shampoo powder. The foam test further shows that the shampoo powder has good foam and fineness. From the combability results, Example 1 is better than Comparative Example 4, indicating that the conditioning performance of the shampoo powder will be weakened when the conditioner and vegetable oil are simultaneously coated in the shell material. Combined with the real test of consumers, the shampoo powder of the present application has excellent performance of high stability, good foam performance, and good conditioning performance.

[0052] It will be apparent to those skilled in the art that the application is not limited to the details of the above-exemplified embodiments and that the present application can be implemented in other particular forms without departing from the spirit or essential characteristics of the present application. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. No reference signs in the claims shall be construed as limiting the scope of the claims.

Claims

1. A sulfate-free shampoo and conditioner in one powder, characterized by, Comprising the following components by weight: Surfactant 45-60%; Solid powder oil 25-40%; Conditioning agent 2-10%; Anti-caking agent 3-20% The surfactant is in powder form, with an active content of ≥80wt%, and contains sulfonate surfactants and amino acid salt surfactants, and does not contain sulfate surfactants; the amino acid salt surfactant is one or more combinations of sodium methyl lauroyl taurate, sodium methyl cocoyl taurate, sodium methyl oleoyl taurate, sodium methyl palmitoyl taurate, sodium methyl myristoyl taurate, and sodium cocoyl taurate; The solid powder oil is composed of a shell material and a plant oil coated in the shell material; the shell material includes malt dextrin and sodium caseinate; The conditioning agent includes at least a liquid hair conditioning agent.

2. The shampoo powder according to claim 1, characterized by, The surfactant is a sulfonate surfactant and an amino acid surfactant; The sulfonate surfactant is one or more combinations of sodium alpha-olefin sulfonate, sodium lauroyl methyl isethionate, sodium cocoyl isethionate, and sodium lauroyl isethionate.

3. The shampoo powder according to claim 1, characterized by, The weight ratio of the sulfonate surfactant and the amino acid salt surfactant is 25-50:5-25.

4. The shampoo powder according to claim 3, characterized in that, The surfactant also includes cocamide propyl betaine, which accounts for 1-5wt% of the total amount of surfactant.

5. The shampoo powder according to claim 1, wherein The solid powder oil is composed of the following components: 30-40wt% malt dextrin, 5-15wt% sodium caseinate, 40-60wt% plant oil, 1-4wt% thickening agent, 1-6wt% emulsifier, and 0.1-1wt% dispersant; The particle size of the solid powder oil is 50-150 mesh.

6. The shampoo powder according to claim 5, characterized in that, The plant oil is one or more combinations of coconut oil, jojoba oil, jojoba seed oil, white pool flower seed oil, and marula seed oil; The thickening agent is dipotassium hydrogen phosphate; The emulsifier is one or more combinations of polyglycerol fatty acid ester, mono-diglycerol fatty acid ester, and glycerol stearate SE; The dispersant is silicon dioxide.

7. The shampoo powder according to claim 1, wherein The liquid hair conditioning agent is one or more combinations of dimethyl silicone oil, amino-terminated silicone oil, quaternary ammonium salt-modified silicone oil, quaternary ammonium salt-80, and polyquaternary ammonium salt.

8. The shampoo powder according to claim 7, characterized in that, The conditioning agent also includes a powder conditioning agent, which is at least one of cellulose, microcrystalline cellulose, cationic cellulose, cationic guar gum, and cationic tragacanth gum; the powder conditioning agent accounts for 0-87.5wt% of the total amount of the conditioning agent.

9. The shampoo powder according to claim 1, wherein The anti-caking agent is at least one of sorbitol and corn starch. The hair powder also includes an appropriate amount of a pH adjuster and a fragrance.

10. A process for the preparation of a shampoo powder as claimed in any one of claims 1 to 9, characterised in that, Comprising the following steps: (1) adding solid powder oil and conditioning agent to a reactor and mixing and stirring until uniform; (2) adding surfactant and anti-caking agent and adjusting the pH value of the system, and mixing and stirring until uniform; The preparation method of the solid powder oil is as follows: (1) Preparation of aqueous solution: disperse sodium caseinate, malt dextrin, and thickening agent in 60-70℃ water and stir until dissolved; Preparation of oil phase solution: mix plant oil and emulsifier and melt at 70-80℃ until fully dissolved; (2) slowly add the oil phase solution into the water phase solution, fully stir to emulsify to obtain an emulsion; (3) after dispersing and homogenizing the emulsion, a homogenized emulsion is obtained; (4) add a dispersing agent, spray dry to obtain a vegetable oil powder.

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