No-wash shampoo and preparation method thereof

Abstract

The invention particularly discloses no-wash shampoo and a preparation method thereof. The no-wash shampoo is prepared from the following raw materials in percentage by weight: 0.2%-0.5% of a thickening agent, 0.02%-0.04% of a surfactant, 0.05%-0.1% of a humectant, 0.1%-0.2% of a pH regulator, 4%-6% of a composition A and the balance of a solvent, wherein the surfactant is prepared from at least one of decanol polyether-7, PEG-40 (Polyethylene Glycol) hydrogenated castor oil and PPG-26-butanol polyether-26; the composition A is prepared from a vinyl polydimethylsiloxane / polymethylsiloxane silsesquioxane cross-linked polymer, nicotinamide and silk glue protein. The no-wash shampoo has the advantages that the oil absorption effect and the oil control long-acting performance of the no-wash shampoo are improved.

Description

Technical Field

[0001] The invention relates to the technical field of daily cosmetics, in particular to a wash-free shampoo and a preparation method thereof. Background Art

[0002] No-rinse shampoo can quickly absorb the oil on the hair. After using no-rinse shampoo, the user's hair can become fluffy and smooth without washing. Currently, most of the no-rinse hair products on the market are spray-type products, which contain a large amount of propellant. Spray-type products have the risk of powder inhalation and a large amount of splashing during use, which also poses pollution and safety hazards to the surrounding environment, limiting the portability of spray-type products. In addition, most of the no-rinse hair products on the market currently have poor oil absorption effects, short oil control time, and poor user experience, which are difficult to meet the needs of consumers.

[0003] Therefore, developing a no-rinse shampoo with excellent oil absorption, long-lasting oil control and good user experience can not only control oil secretion and improve scalp health problems, but also bring convenience to people's daily life. Summary of the invention

[0004] In order to improve the oil absorption effect, long-term oil control performance and usage experience of the no-rinse shampoo, the present application provides a no-rinse shampoo and a preparation method thereof.

[0005] In the first aspect, the present application provides a wash-free shampoo, which adopts the following technical solution:

[0006] A wash-free shampoo comprises the following raw materials by weight percentage: 0.2%-0.5% thickener, 0.02%-0.04% surfactant, 0.05%-0.1% moisturizer, 0.1%-0.2% pH regulator, 4%-6% composition A and the remainder of solvent;

[0007] Wherein, the surfactant includes at least one of decyl alcohol polyether-7, PEG-40 hydrogenated castor oil, and PPG-26-butanol polyether-26;

[0008] The composition A comprises vinyl dimethicone / polymethicone silsesquioxane cross-linked polymer, niacinamide and sericin.

[0009] Firstly, the vinyl polydimethylsiloxane / polymethylsiloxane silsesquioxane cross-linked polymer used in the present application is an organic micron-sized powder with a porous structure. When applied to a wash-free shampoo, it can obtain the best adsorption rate and oil absorption value under the action of a surfactant, and when used, it can achieve a refreshing and fluffy effect after oil absorption, and will not cause the hair to be dull and dry due to excessive oil absorption; secondly, the carboxyl, hydroxyl, carbonyl and other groups in the surfactant have good lipophilicity, and the vinyl polydimethylsiloxane / polymethylsiloxane silsesquioxane cross-linked polymer with a porous structure has a high specific surface area and a relatively suitable pore size, which is conducive to obtaining a higher surfactant loading and promoting a more dispersed surfactant. Adsorption sites, thereby significantly improving the oil absorption effect of the wash-free shampoo and the long-term oil control effect on the scalp; thirdly, the niacinamide in composition A can reduce the production of fatty acids and triglycerides in sebum, thereby shrinking pores and helping to control oil on the scalp, and the action of niacinamide and vinyl polydimethylsiloxane / polymethicone silsesquioxane crosspolymer can further increase the fluffiness of the hair and improve the long-term oil control effect of the wash-free shampoo on the scalp; finally, the sericin and niacinamide in composition A can help improve dry and frizzy hair, increase the smoothness of the hair, and work together with vinyl polydimethylsiloxane / polymethicone silsesquioxane crosspolymer to avoid dull and dry hair, thereby improving the user experience.

[0010] Preferably, based on the composition A, the mass ratio of vinyl dimethicone / polymethicone silsesquioxane cross-linked polymer, niacinamide and sericin is 2-5:1-3:1.

[0011] By controlling the mass ratio of vinyl dimethicone / methicone silsesquioxane cross-linked polymer, niacinamide and sericin, and using the three together, the leave-in shampoo can achieve good oil absorption for hair while not causing hair to become dull and dry, allowing hair to remain fluffy and smooth for a long time, thereby improving the user experience.

[0012] Preferably, based on the composition A, the mass ratio of vinyl dimethicone / polymethicone silsesquioxane cross-linked polymer, niacinamide and sericin is 2-3:1-2:1.

[0013] Preferably, the composition B further comprises 0.8%-2% by weight; the composition B comprises jojoba seed oil and Lotus japonicus seed extract.

[0014] The fatty acid ester mixture of long-chain monounsaturated fatty acids and long-chain monounsaturated fatty alcohols in jojoba seed oil is similar to the components in the sebum membrane, and can remove the oil particles blocked in the scalp follicles in an oil-soluble oil manner, thereby improving the clarity of the scalp; at the same time, jojoba seed oil can also quickly penetrate into the hair, loosen and dissolve the hardened sebum, and restore the fluffy effect of the hair; and the triterpenoid saponins in the extract of the lotus seed can also significantly improve the degreasing effect of the leave-in shampoo on the scalp, and, under the action of jojoba seed oil, it can further promote the inhibitory effect of quercetin and rhamnosyl uridine in the extract of the lotus seed on lipid synthesis, thereby improving the long-lasting oil control effect of the leave-in shampoo.

[0015] The combination of composition B and composition A, wherein the jojoba seed oil and vinyl dimethicone / methicone silsesquioxane cross-linked polymer are combined, can significantly improve the oil removal effect and long-term oil control effect of the leave-in shampoo.

[0016] In addition, the combination of phytosterols and phenolic compounds in jojoba seed oil and flavonoids in lotus seed extract is also beneficial to maintaining a stable and healthy scalp environment, astringing hair follicles, reducing the oil secretion rate of the scalp, and further enhancing the long-term oil control effect of leave-in shampoo on the scalp.

[0017] Preferably, the mass ratio of the Aesculus hippocastanum extract to the Lotus japonicus seed extract in the composition B is 10-25:1.

[0018] By controlling the weight ratio of jojoba seed oil to lotus seed extract, on the one hand, the two can cooperate with each other to maximize the cooperation effect, thereby improving the oil absorption effect of the leave-in shampoo and nourishing the scalp; on the other hand, composition B can also be combined with composition A to significantly improve the oil absorption effect of the leave-in shampoo, and after use, the hair can remain fluffy for a long time, thereby improving the long-term oil control effect of the leave-in shampoo on the scalp.

[0019] Preferably, the composition further comprises 0.04%-0.06% soothing and antipruritic agent by weight percentage; the soothing and antipruritic agent comprises at least one of trideceth-9, PEG-5 ethylhexanoate and hydroxyphenylpropionamide benzoic acid.

[0020] Trideceth-9 can relieve the itching of the scalp, PEG-5 ethylhexanoate can work together with cooling agents to activate the temperature-sensing nerves in brain cells, making people feel cool and relieving the itching caused by oily scalp; while hydroxyphenylpropionamide benzoic acid can resist histamine and significantly relieve the itching caused by histamine; the above soothing and antipruritic agents can improve the user experience.

[0021] Preferably, the thickener comprises carbomer; the humectant comprises ethylhexylglycerin; the pH adjuster comprises triethanolamine; and the solvent comprises ethanol and water.

[0022] Preferably, the composition further comprises 0.03%-0.06% of a cooling agent by weight; the cooling agent comprises menthol.

[0023] By selecting a cooling agent, the cooling agent can work together with the soothing and antipruritic agent to significantly reduce the user's scalp itching and improve the user experience.

[0024] Preferably, the composition further comprises 0.2%-0.3% of fragrance according to weight percentage; the fragrance comprises daily fragrance.

[0025] In a second aspect, the present application provides a method for preparing a wash-free shampoo, using the following technical solution:

[0026] A method for preparing a wash-free shampoo comprises the following steps:

[0027] Step 1: Mix the first part of the solvent and the thickener, homogenize, and obtain a first pretreated slurry; the first part of the solvent is cold pure water at 10-30° C.; the homogenization time is 5-10 minutes;

[0028] Step 2: After mixing and stirring the first pretreated slurry and the surfactant, add the composition A and stir, and continue to add the composition B and stir to obtain a second pretreated slurry; the stirring time after the first pretreated slurry and the surfactant are mixed is 2-5 minutes; the stirring time after adding the composition A is 5-8 minutes; the stirring time after adding the composition B is 2-5 minutes;

[0029] Step 3: Mix the solvent in the second part with the fragrance, the cooling agent, the moisturizer, the soothing and antipruritic agent and the second pre-treated slurry, and stir to obtain a third pre-treated slurry; the stirring time is 3-5 minutes;

[0030] Step 4: Mix and stir the third pretreated slurry and the pH regulator to obtain the wash-free shampoo; the stirring time is 1-3 minutes. DETAILED DESCRIPTION

[0031] For better understanding and implementation, the technical solution of the present invention will be clearly and completely described below in conjunction with embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0033] Unless otherwise indicated, all numerical values ​​expressing quantities of ingredients, reaction conditions, and so forth used in the specification and claims are to be understood as modified by the term “about.” Accordingly, unless indicated to the contrary, the numerical parameters set forth herein are approximations that can vary depending upon the desired properties desired to be obtained.

[0034] As used herein, "and / or" means one or all of the mentioned elements.

[0035] As used herein, “including” and “comprising” encompasses the case where only the stated elements are present as well as the case where there are other elements other than the stated elements.

[0036] All percentages in the present invention are by weight, unless otherwise specified.

[0037] Unless otherwise indicated, "a", "an", "an" and "the" used in this specification are intended to include "at least one" or "one or more". For example, "a component" means one or more components, so more than one component may be considered and may be employed or used in the implementation of the embodiment.

[0038] Example

[0039] Example 1

[0040] A wash-free shampoo comprises the following raw materials by weight percentage:

[0041] Carbomer 0.3%,

[0042] Surfactants 0.027%, including 0.012% Deceth-7, 0.0105% PEG-40 hydrogenated castor oil, 0.0045% PPG-26-Buteth-26,

[0043] Ethylhexylglycerin 0.05%,

[0044] Triethanolamine 0.2%,

[0045] Composition A 6%, comprising vinyl dimethicone / polymethicone silsesquioxane cross-linked polymer, niacinamide, and sericin in a mass ratio of 2:2:1,

[0046] Soothing antipruritic agents 0.045%, including 0.032% trideceth-9, 0.0125% PEG-5 ethylhexanoate, 0.0005% hydroxyphenylpropionamide benzoic acid,

[0047] Menthol 0.05%,

[0048] Daily fragrance 0.3%,

[0049] The solvent is 93.028%, including 45% water and 48.028% ethanol.

[0050] A wash-free shampoo is prepared by the following steps:

[0051] Step 1: Add 20°C cold pure water and carbomer into a mixing tank and homogenize for 8 minutes to obtain a first pretreated slurry;

[0052] Step 2: After mixing the first pretreated slurry with a surfactant and stirring for 3 minutes, adding composition A and stirring for 6 minutes to obtain a second pretreated slurry;

[0053] Step 3: Mix ethanol, daily fragrance, menthol, ethylhexylglycerin, soothing and antipruritic agents with the second pre-treated slurry, and stir for 4 minutes to obtain a third pre-treated slurry;

[0054] Step 4: Mix the third pretreated slurry with triethanolamine and stir for 2 minutes to obtain a rinse-free shampoo.

[0055] Example 2

[0056] A wash-free shampoo comprises the following raw materials by weight percentage:

[0057] Carbomer 0.2%,

[0058] Surfactants 0.04%, including 0.015% Deceth-7, 0.015% PEG-40 hydrogenated castor oil, 0.01% PPG-26-Buteth-26,

[0059] Ethylhexylglycerin 0.07%,

[0060] Triethanolamine 0.1%,

[0061] Composition A 5%, comprising vinyl dimethicone / polymethicone silsesquioxane cross-linked polymer, niacinamide, and silk colloid in a mass ratio of 5:3:1,

[0062] Soothing antipruritic agents 0.06%, including 0.044% trideceth-9, 0.015% PEG-5 ethylhexanoate, 0.001% hydroxyphenylpropionamide benzoic acid,

[0063] Menthol 0.03%,

[0064] Daily fragrance 0.2,

[0065] The solvent is 94.3%, including 45.5% water and 48.8% ethanol.

[0066] A wash-free shampoo is prepared by the following steps:

[0067] Step 1: Add 10°C cold pure water and carbomer into a mixing tank and homogenize for 10 minutes to obtain a first pretreated slurry;

[0068] Step 2: After mixing the first pretreated slurry with a surfactant and stirring for 5 minutes, adding composition A and stirring for 5 minutes to obtain a second pretreated slurry;

[0069] Step 3: Mix ethanol, daily fragrance, menthol, ethylhexylglycerin, soothing and antipruritic agents with the second pre-treated slurry, and stir for 3 minutes to obtain a third pre-treated slurry;

[0070] Step 4: Mix the third pretreated slurry with triethanolamine and stir for 1 minute to obtain a rinse-free shampoo.

[0071] Example 3

[0072] A wash-free shampoo comprises the following raw materials by weight percentage:

[0073] Carbomer 0.5%,

[0074] Surfactants 0.03%, including 0.008% Deceth-7, 0.013% PEG-40 hydrogenated castor oil, 0.009% PPG-26-Buteth-26,

[0075] Ethylhexylglycerin 0.1%,

[0076] Triethanolamine 0.2%,

[0077] Composition A 4%, comprising vinyl dimethicone / polymethicone silsesquioxane cross-linked polymer, niacinamide, and sericin in a mass ratio of 2:1:1,

[0078] Soothing anti-itch agent 0.05%, including 0.035% trideceth-9, 0.014% PEG-5 ethylhexanoate, 0.001% hydroxyphenyl propionamide benzoic acid,

[0079] Menthol 0.06%,

[0080] Daily fragrance 0.2%,

[0081] The solvent is 94.86%, including 46% water and 48.86% ethanol.

[0082] A wash-free shampoo is prepared by the following steps:

[0083] Step 1: Add 30°C cold pure water and carbomer into a mixing tank and homogenize for 5 minutes to obtain a first pretreated slurry;

[0084] Step 2: After mixing the first pretreated slurry with a surfactant and stirring for 2 minutes, adding composition A and stirring for 8 minutes to obtain a second pretreated slurry;

[0085] Step 3: Mix ethanol, daily fragrance, menthol, ethylhexylglycerin, soothing and antipruritic agents with the second pre-treated slurry, and stir for 5 minutes to obtain a third pre-treated slurry;

[0086] Step 4: Mix the third pretreated slurry with triethanolamine and stir for 3 minutes to obtain a no-rinse shampoo.

[0087] Example 4

[0088] The difference between this embodiment and embodiment 1 is that the mass ratio of vinyl dimethicone / polymethicone silsesquioxane crosslinked polymer, niacinamide, and sericin in composition A is 3:2:1, and the rest is consistent with embodiment 1.

[0089] Example 5

[0090] The difference between this embodiment and embodiment 1 is that the mass ratio of vinyl dimethicone / polymethicone silsesquioxane crosslinked polymer, niacinamide, and sericin in composition A is 2.5:1.5:1, and the rest is consistent with embodiment 1.

[0091] Example 6

[0092] The difference between this embodiment and embodiment 1 is that the wash-free shampoo also includes composition B;

[0093] A wash-free shampoo comprises the following raw materials by weight percentage:

[0094] Carbomer 0.3%,

[0095] Surfactants 0.027%, including 0.012% Deceth-7, 0.0105% PEG-40 hydrogenated castor oil, 0.0045% PPG-26-Buteth-26,

[0096] Ethylhexylglycerin 0.05%,

[0097] Triethanolamine 0.2%,

[0098] Composition A 6%, comprising vinyl dimethicone / polymethicone silsesquioxane cross-linked polymer, niacinamide, and sericin in a mass ratio of 2:2:1,

[0099] Composition B 1.4%, comprising jojoba seed oil and Lotus japonicus seed extract in a mass ratio of 20:1,

[0100] Soothing antipruritic agents 0.045%, including 0.032% trideceth-9, 0.0125% PEG-5 ethylhexanoate, 0.0005% hydroxyphenylpropionamide benzoic acid,

[0101] Menthol 0.05%,

[0102] Daily fragrance 0.3%,

[0103] The solvent is 91.628%, including 44% water and 47.628% ethanol.

[0104] A wash-free shampoo is prepared by the following steps:

[0105] Step 1: Add 20°C cold pure water and carbomer into a mixing tank and homogenize for 8 minutes to obtain a first pretreated slurry;

[0106] Step 2: After mixing the first pretreated slurry with a surfactant and stirring for 3 minutes, adding composition A and stirring for 6 minutes, and then adding composition B and stirring for 3 minutes to obtain a second pretreated slurry;

[0107] Step 3: Mix ethanol, daily fragrance, menthol, ethylhexylglycerin, soothing and antipruritic agents with the second pre-treated slurry, and stir for 4 minutes to obtain a third pre-treated slurry;

[0108] Step 4: Mix the third pretreated slurry with triethanolamine and stir for 2 minutes to obtain a rinse-free shampoo.

[0109] Example 7

[0110] The difference between this embodiment and embodiment 1 is that the wash-free shampoo also includes composition B;

[0111] A wash-free shampoo comprises the following raw materials by weight percentage:

[0112] Carbomer 0.3%,

[0113] Surfactants 0.027%, including 0.012% Deceth-7, 0.0105% PEG-40 hydrogenated castor oil, 0.0045% PPG-26-Buteth-26,

[0114] Ethylhexylglycerin 0.05%,

[0115] Triethanolamine 0.2%,

[0116] Composition A 6%, comprising vinyl dimethicone / polymethicone silsesquioxane cross-linked polymer, niacinamide, and sericin in a mass ratio of 2:2:1,

[0117] Composition B 2%, comprising jojoba seed oil and Lotus japonicus seed extract in a mass ratio of 25:1,

[0118] Soothing antipruritic agents 0.045%, including 0.032% trideceth-9, 0.0125% PEG-5 ethylhexanoate, 0.0005% hydroxyphenylpropionamide benzoic acid,

[0119] Menthol 0.05%,

[0120] Daily fragrance 0.3%,

[0121] The solvent is 91.028%, including 44% water and 47.028% ethanol.

[0122] A wash-free shampoo is prepared by the following steps:

[0123] Step 1: Add 20°C cold pure water and carbomer into a mixing tank and homogenize for 8 minutes to obtain a first pretreated slurry;

[0124] Step 2: After mixing the first pretreated slurry with a surfactant and stirring for 3 minutes, adding composition A and stirring for 6 minutes, and then adding composition B and stirring for 5 minutes to obtain a second pretreated slurry;

[0125] Step 3: Mix ethanol, daily fragrance, menthol, ethylhexylglycerin, soothing and antipruritic agents with the second pre-treated slurry, and stir for 4 minutes to obtain a third pre-treated slurry;

[0126] Step 4: Mix the third pretreated slurry with triethanolamine and stir for 2 minutes to obtain a rinse-free shampoo.

[0127] Example 8

[0128] The difference between this embodiment and embodiment 1 is that the wash-free shampoo also includes composition B;

[0129] A wash-free shampoo comprises the following raw materials by weight percentage:

[0130] Carbomer 0.3%,

[0131] Surfactants 0.027%, including 0.012% Deceth-7, 0.0105% PEG-40 hydrogenated castor oil, 0.0045% PPG-26-Buteth-26,

[0132] Ethylhexylglycerin 0.05%,

[0133] Triethanolamine 0.2%,

[0134] Composition A 6%, comprising vinyl dimethicone / polymethicone silsesquioxane cross-linked polymer, niacinamide, and sericin in a mass ratio of 2:2:1,

[0135] Composition B 0.8%, comprising jojoba seed oil and lotus seed extract in a mass ratio of 10:1,

[0136] Soothing antipruritic agents 0.045%, including 0.032% trideceth-9, 0.0125% PEG-5 ethylhexanoate, 0.0005% hydroxyphenylpropionamide benzoic acid,

[0137] Menthol 0.05%,

[0138] Daily fragrance 0.3%,

[0139] The solvent is 90.228%, including 44% water and 46.228% ethanol.

[0140] A wash-free shampoo is prepared by the following steps:

[0141] Step 1: Add 20°C cold pure water and carbomer into a mixing tank and homogenize for 8 minutes to obtain a first pretreated slurry;

[0142] Step 2: After mixing the first pretreated slurry with a surfactant and stirring for 3 minutes, adding composition A and stirring for 6 minutes, and then adding composition B and stirring for 2 minutes to obtain a second pretreated slurry;

[0143] Step 3: Mix ethanol, daily fragrance, menthol, ethylhexylglycerin, soothing and antipruritic agents with the second pre-treated slurry, and stir for 4 minutes to obtain a third pre-treated slurry;

[0144] Step 4: Mix the third pretreated slurry with triethanolamine and stir for 2 minutes to obtain a rinse-free shampoo.

[0145] Example 9

[0146] The difference between this embodiment and embodiment 6 is that the wash-free shampoo further includes 0.2% of composition B, which includes jojoba seed oil and lotus seed extract in a mass ratio of 8:1; the rest is consistent with embodiment 1.

[0147] Example 10

[0148] The difference between this embodiment and embodiment 6 is that the wash-free shampoo further includes 4% of composition B, which includes jojoba seed oil and lotus seed extract in a mass ratio of 45:1; the rest is consistent with embodiment 1.

[0149] Embodiment 11

[0150] The difference between this embodiment and embodiment 6 is that an equal weight of jojoba seed oil is used instead of lotus seed extract; the rest of the parts are consistent with embodiment 1.

[0151] Example 12

[0152] The difference between this embodiment and embodiment 6 is that an equal weight of cactus extract is used instead of lotus seed extract; the rest of the parts are consistent with embodiment 1.

[0153] Comparative Example 1

[0154] The difference between this comparative example and Example 1 is that composition A is not used in the leave-in shampoo; the rest is consistent with Example 1.

[0155] Comparative Example 2

[0156] The difference between this comparative example and Example 1 is that no surfactant is used in the rinse-free shampoo; the rest is consistent with Example 1.

[0157] Comparative Example 3

[0158] The difference between this comparative example and Example 1 is that an equal weight of vinyl dimethicone / polymethicone silsesquioxane crosslinked polymer is used instead of niacinamide; the rest of the parts are the same as Example 1.

[0159] Comparative Example 4

[0160] The difference between this comparative example and Example 1 is that the mass proportion of composition A in the leave-on shampoo is 1%; the rest is consistent with Example 1.

[0161] Comparative Example 5

[0162] The difference between this comparative example and Example 1 is that the mass proportion of composition A in the leave-on shampoo is 10%; the rest is consistent with Example 1.

[0163] Test Method

[0164] 1. Oil absorption test

[0165] The oil absorption of the wash-free shampoo obtained in the above examples and comparative examples is tested. The specific test method is as follows: the wash-free shampoo sample is spread on a glass plate, and caprylic / capric triglyceride is added with a dropper. During the oiling process, a paint knife is used to carefully stir and grind. At the beginning of the addition process, 3-5 drops can be added each time, and it must be added drop by drop when approaching the end. When a uniform paste is formed and can be scooped up with a paint knife, it is the end point. All operations must be completed within 20 minutes.

[0166] Calculate the oil absorption, the formula is as follows:

[0167] Oil absorption X = m1 / m2×100;

[0168] Wherein, m1 is the mass of caprylic / capric triglyceride, and m2 is the mass of the sample.

[0169] The calculated data are recorded in Table 1.

[0170] 2. No-rinse shampoo usage experience test

[0171] The use experience test of the free-rinse shampoo obtained in the above-mentioned embodiment and comparative example was carried out, and the specific test method was as follows: 85 testers with thick black hair were selected, and every 5 testers tested one embodiment, and scored according to the sensory experience of the user, using a 10-point system, and the average value was calculated; the refreshing effect, fluffy effect, softness and glossiness of the free-rinse shampoo were tested respectively, and the data were recorded in Table 1.

[0172] Table 1

[0173]

[0174] In combination with Examples 1-3, Comparative Examples 1-5 and Table 1, it can be seen that in the present application, a composition A having an appropriate mass proportion is used and matched with a surfactant. Since the vinyl polydimethylsiloxane / polymethylsiloxane silsesquioxane crosslinked polymer in the composition A is an organic powder with a porous structure, it can not only absorb the oil on the scalp and hair by itself, but also work with niacinamide to achieve a long-term oil control effect on the scalp, so that the scalp environment can be maintained in a relatively dry state, providing a stable environmental basis for the silk colloid protein to play the effect of maintaining hair, and improving the long-term oil control effect; on the other hand, the porous structure of the vinyl polydimethylsiloxane / polymethylsiloxane silsesquioxane crosslinked polymer has a large specific surface area, and a higher surfactant loading can be obtained, which cooperates with the lipophilic functional group in the surfactant, thereby further improving the oil absorption effect and long-term oil control effect of the leave-in shampoo.

[0175] When no surfactant is used in the leave-in shampoo, the vinyl dimethicone / polymethicone silsesquioxane crosslinked polymer in composition A cannot form a complex with the surfactant, which will reduce the oil absorption effect of the leave-in shampoo to a certain extent, is not conducive to creating a healthy basic environment for the scalp and hair, is not conducive to the continued function of niacinamide and sericin, and reduces the user experience.

[0176] When any one of the vinyl dimethicone / methicone silsesquioxane crosspolymer and niacinamide in composition A is missing, the oil absorption effect and long-term oil control effect of the leave-in shampoo as well as the user experience will be reduced.

[0177] In combination with Examples 1, 4-5 and Table 1, it can be seen that by further optimizing the mass ratio of vinyl dimethicone / polymethicone silsesquioxane cross-linked polymer, niacinamide and sericin in composition A, it is possible to achieve efficient oil absorption of the scalp and hair by the leave-in shampoo while avoiding dryness and loss of luster of the hair, thereby improving the user experience.

[0178] In combination with Examples 1, 6-8 and Table 1, it can be seen that by adding composition B to the leave-on shampoo, the jojoba seed oil and lotus seed extract in composition B can further improve the oil absorption effect of the leave-on shampoo. This is because, on the one hand, jojoba seed oil itself can achieve the effect of dissolving oil with oil, and can also promote the absorption of lotus seed extract and niacinamide and sericin in composition A by the scalp and hair, thereby achieving long-term oil control while significantly improving the fluffiness and glossiness of the hair, avoiding the occurrence of dry and dull hair due to oil absorption.

[0179] In combination with Examples 6, 9-10 and Table 1, it can be seen that when the amount of composition B is too high or too low, and the mass ratio of jojoba seed oil to lotus seed extract in composition B is too high or too low, it is not conducive to the excellent oil absorption effect of composition B in the wash-free shampoo. This may be because the matching and combination relationship of the components in composition B and composition A is destroyed, which is not conducive to the interaction between the components to maximize the oil absorption and oil control and achieve the effect of fluffy hair and high gloss.

[0180] Combining Examples 6, 11-12 and Table 1, it can be seen that the synergistic effect of jojoba seed oil and Lotus japonicus seed extract in composition B can significantly enhance the oil absorption and long-term oil control effects of the leave-in shampoo, thereby improving the user experience.

[0181] The above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit the protection scope of the present invention. Although the present invention is described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the technical solutions of the present invention can be modified or equivalently replaced, but these modifications or replacements are all within the protection scope of the present invention.

Claims

1. A wash-free shampoo, characterized in that: The following raw materials are included according to weight percentage: thickener 0.2%-0.5%, surfactant 0.02%-0.04%, moisturizer 0.05%-0.1%, pH adjuster 0.1%-0.2%, composition A 4%-6% and solvent balance; Wherein, the surfactant includes at least one of decyl alcohol polyether-7, PEG-40 hydrogenated castor oil, and PPG-26-butanol polyether-26; The composition A comprises vinyl dimethicone / polymethicone silsesquioxane cross-linked polymer, niacinamide and sericin.

2. A wash-free shampoo according to claim 1, characterized in that: Taking the composition A as a reference, the mass ratio of vinyl dimethicone / polymethicone silsesquioxane cross-linked polymer, niacinamide and sericin is 2-5:1-3:

1.

3. A wash-free shampoo according to claim 2, characterized in that: Taking the composition A as a reference, the mass ratio of vinyl dimethicone / polymethicone silsesquioxane cross-linked polymer, niacinamide and sericin is 2-3:1-2:

1.

4. A wash-free shampoo according to claim 1, characterized in that: The invention also comprises 0.8%-2% of composition B by weight; the composition B comprises jojoba seed oil and lotus seed extract.

5. A wash-free shampoo according to claim 4, characterized in that: The mass ratio of the jojoba seed oil to the Lotus japonicus seed extract in the composition B is 10-25:

1.

6. A wash-free shampoo according to claim 1, characterized in that: The invention also comprises 0.04% to 0.06% of soothing and antipruritic agents according to weight percentage; the soothing and antipruritic agents comprise at least one of trideceth-9, PEG-5 ethylhexanoate and hydroxyphenylpropionamide benzoic acid.

7. A wash-free shampoo according to claim 1, characterized in that: The thickener includes carbomer; the moisturizer includes ethylhexylglycerin; the pH adjuster includes triethanolamine; and the solvent includes ethanol and water.

8. A wash-free shampoo according to claim 1, characterized in that: The invention also comprises 0.03% to 0.06% of a cooling agent according to weight percentage; the cooling agent comprises menthol.

9. A wash-free shampoo according to claim 1, characterized in that: The composition also comprises 0.2%-0.3% of fragrance according to weight percentage; the fragrance comprises daily fragrance.

10. The method for preparing a wash-free shampoo according to any one of claims 1 to 9, characterized in that: The steps include: Step 1: mixing the first part of the solvent with the thickener, and homogenizing to obtain a first pretreated slurry; Step 2: After mixing and stirring the first pretreated slurry and the surfactant, adding the composition A and stirring, and continuing to add the composition B and stirring to obtain a second pretreated slurry; Step 3: mixing the second part of the solvent with the fragrance, the cooling agent, the moisturizer, the soothing and antipruritic agent and the second pre-treated slurry, and stirring to obtain a third pre-treated slurry; Step 4: Mix and stir the third pretreated slurry and the pH adjuster to obtain the rinse-free shampoo.

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