Skin-moistening shower gel and preparation method thereof

Abstract

The present invention relates to a skin moisturizing shower gel and a preparation method thereof, and relates to the technical field of shower gels, the skin moisturizing shower gel comprises the following components by weight: 25-35% of a surfactant, 12-18% of modified amino acid, 0.05-0.5% of essence, 0.4-0.8% of citric acid, 0.05-0.3% of sodium hydroxide, 0.1-1% of a chelating agent, 0.2-0.8% of a preservative, and the balance of water. The skin-moistening shower gel provided by the invention is added with the modified amino acid, so that the effects of moisturizing, moistening, protecting skin and the like of the obtained shower gel product are enhanced; meanwhile, under the condition that no additional suspension stabilizer is added, the stability of the formula system of the obtained shower gel is remarkably improved. The problems that existing amino acid shower gel is poor in high-temperature stability, not lasting in moisturizing effect and the like are effectively solved, and the defects in the prior art are overcome.

Description

Technical Field

[0001] The invention relates to the technical field of shower gel, in particular to a skin-emollient shower gel and a preparation method thereof. Background Art

[0002] With the accelerated pace of modern life and people's unremitting pursuit of healthy life, the importance of personal care products in daily life has become increasingly prominent, especially products such as shower gel. Although traditional shower gel can meet basic cleaning needs, it often ignores the nourishment and protection of the skin. Long-term use may cause a series of problems such as dry skin and sensitivity. Therefore, the development of shower gel with multiple functions such as moisturizing and moisturizing has become a new trend in the market.

[0003] At present, there are many types of moisturizing shower gels on the market. Among them, amino acids are widely used by many manufacturers in the preparation of moisturizing shower gels due to their multiple advantages such as mildness, non-irritation, moisturizing, skin-friendly, and unique ice crystal effect. Amino acid shower gels can not only effectively cleanse the skin, but also provide sufficient nutrition and moisture to the skin during the cleansing process, improve skin dryness, sensitivity and other problems, and are widely welcomed by consumers.

[0004] However, amino acid shower gels also face some challenges in practical applications. Due to temperature changes or storage time, such products are prone to caking, sinking, and unevenness. These problems not only affect the appearance and texture of the product, but also make it difficult for amino acids to fully dissolve and be effectively absorbed by the skin in actual use, which significantly reduces the moisturizing and emollient effects of the product, thereby limiting the further application of amino acid shower gels. Summary of the invention

[0005] In order to solve the above problems, the present invention provides a skin moisturizing shower gel and a preparation method thereof.

[0006] In a first aspect, the present invention provides a kind of skin moisturizing shower gel, and the skin moisturizing shower gel comprises the following components in percentage by weight:

[0007] Surfactant 25-35%, modified amino acid 12-18%, flavor 0.05-0.5%, citric acid 0.4-0.8%, sodium hydroxide 0.05-0.3%, chelating agent 0.1-1%, preservative 0.2-0.8%, and the balance is water;

[0008] The modified amino acid is obtained by mixing and grinding an amino acid containing an aromatic heterocycle on the side chain and a sodium hyaluronate cross-linked polymer and subjecting the mixture to oxygen-enriched microwave plasma treatment.

[0009] Further, the skin moisturizing shower gel comprises the following components in percentage by weight:

[0010] Surfactant 30%, modified amino acid 15%, flavor 0.3%, citric acid 0.6%, sodium hydroxide 0.15%, chelating agent 0.5%, preservative 0.5%, and the balance is water.

[0011] Furthermore, the amino acid having an aromatic heterocycle in the side chain includes at least one of histidine and tryptophan.

[0012] Furthermore, the weight ratio of the amino acid containing an aromatic heterocycle on the side chain to the sodium hyaluronate cross-linked polymer is 100:(3-7).

[0013] Furthermore, the working condition parameters of the mixed grinding include: a grinding speed of 100 to 200 rpm, and a grinding time of 15 to 30 minutes.

[0014] Furthermore, the step of oxygen-enriched microwave plasma treatment includes the following process:

[0015] The mixture obtained by mixing and grinding the amino acid containing aromatic heterocycles in the side chain and the sodium hyaluronate cross-linked polymer is placed in a microwave plasma treatment device for oxygen-enriched microwave plasma treatment for 40 to 60 seconds, and then oxygen is continuously introduced for 5 to 10 minutes to obtain the modified amino acid;

[0016] The working condition parameters of the microwave plasma treatment equipment include: using oxygen and argon with a volume ratio of (5-8):1 as the working medium, setting the microwave power to 150-280W, the air intake volume to 60-70mL / min and the discharge mode to glow discharge.

[0017] Furthermore, the surfactant includes at least one of sodium laureth sulfate and sodium methyl lauroyl taurate.

[0018] Furthermore, the chelating agent includes at least one of disodium ethylenediaminetetraacetate and tetrasodium ethylenediaminetetraacetate; the preservative includes at least one of German Euxyl PE9010 and phenoxyethanol; and the flavor includes at least one of mint flavor and lemon flavor.

[0019] In a second aspect, the present invention provides a method for preparing the moisturizing shower gel according to any one of the first aspects, the preparation method comprising the following steps:

[0020] The water, the surfactant and the chelating agent are mixed by ultrasonic stirring at a temperature of 55 to 65° C., and then the modified amino acid is added and the mixture is further mixed by ultrasonic stirring to obtain a first mixture;

[0021] The remaining components in the moisturizing shower gel are added to the first mixed material at a temperature of 40-50° C. and mixed by ultrasonic stirring to obtain the moisturizing shower gel.

[0022] Furthermore, the working condition parameters of the ultrasonic stirring and mixing include: ultrasonic power of 300-400W, stirring speed of 400-500rpm, and stirring time of 10-20 minutes.

[0023] The above technical solution provided by the embodiment of the present invention has at least the following advantages compared with the prior art:

[0024] The embodiment of the present invention provides a moisturizing shower gel and a preparation method thereof. The moisturizing shower gel provided by the present invention is added with modified amino acids, which enhances the moisturizing and skin care effects of the obtained shower gel product; at the same time, without the need to add additional suspension stabilizers, the stability of the obtained shower gel formula system is significantly improved. It effectively solves the problems of poor high temperature stability and short-lasting moisturizing effect of existing amino acid shower gels, and makes up for the deficiencies of the prior art. Specifically:

[0025] 1) The present invention uses amino acids with aromatic heterocyclic rings on the side chains and a small amount of sodium hyaluronate cross-linked polymer with a unique network structure as raw materials. During the mixing and grinding stage, the amino acids with aromatic heterocyclic rings on the side chains and the sodium hyaluronate cross-linked polymer are initially modified and uniformly mixed through mechanical force, hydrogen bond formation, charge transfer, etc., which helps to enhance the stability of the system and create favorable conditions for subsequent oxygen-enriched microwave plasma treatment; oxygen-enriched microwave plasma treatment further promotes the synergistic effect between the two raw materials. On the one hand, plasma treatment enhances the permeability and biological activity of aromatic heterocyclic amino acids, making it easier for them to bind to skin cells and exert their effects; on the other hand, the stability of the sodium hyaluronate cross-linked polymer is improved, and its water absorption and water locking ability is further enhanced.

[0026] Therefore, the present invention uses amino acids containing aromatic heterocycles on the side chains in combination with a small amount of sodium hyaluronate cross-linked polymers with a unique network structure, and uses a combined treatment method of mechanical grinding and oxygen-rich microwave plasma, which not only significantly enhances the moisturizing and nourishing skin care effects of amino acids, but also greatly improves its stability and compatibility in the formula system, thereby effectively solving the problems of poor high-temperature stability and short-lasting moisturizing effect of existing amino acid shower gels, and avoiding the problems of caking, sinking to the bottom, unevenness, etc. that existing amino acid shower gel products are prone to.

[0027] 2) The preparation method of the moisturizing shower gel provided by the present invention further improves the uniformity and stability of each component in the overall formula through ultrasonic mixing and stirring; at the same time, the preparation method of the moisturizing shower gel is simple, does not require additional specific equipment, and is suitable for mass industrial production. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0030] Figure 1 A schematic flow chart of a method for preparing a moisturizing shower gel provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Unless otherwise specified, various raw materials, reagents, instruments and equipment used in the present invention can be purchased from the market or prepared by existing methods.

[0033] In a first aspect, the present invention provides a kind of skin moisturizing shower gel, and the skin moisturizing shower gel comprises the following components in percentage by weight:

[0034] Surfactant 25-35%, modified amino acid 12-18%, flavor 0.05-0.5%, citric acid 0.4-0.8%, sodium hydroxide 0.05-0.3%, chelating agent 0.1-1%, preservative 0.2-0.8%, and the balance is water;

[0035] The modified amino acid is obtained by mixing and grinding an amino acid containing an aromatic heterocycle on the side chain and a sodium hyaluronate cross-linked polymer and subjecting the mixture to oxygen-enriched microwave plasma treatment.

[0036] The embodiment of the present invention provides a moisturizing shower gel, which is added with modified amino acids to enhance the moisturizing and skin care effects of the obtained shower gel product; at the same time, without the need to add additional suspension stabilizers, the stability of the obtained shower gel formula system is significantly improved. It effectively solves the problems of poor high temperature stability and short-lasting moisturizing effect of existing amino acid shower gels, and makes up for the deficiencies of the prior art. Specifically:

[0037] The present invention uses amino acids with aromatic heterocyclic rings on the side chains and a small amount of sodium hyaluronate cross-linked polymer with a unique network structure (CAS registration number: 105524-32-1) as raw materials. During the mixing and grinding stage, the amino acids with aromatic heterocyclic rings on the side chains and the sodium hyaluronate cross-linked polymer are initially modified and uniformly mixed through mechanical force, hydrogen bond formation, charge transfer, etc., which helps to enhance the stability of the system and create favorable conditions for subsequent oxygen-enriched microwave plasma treatment; oxygen-enriched microwave plasma treatment promotes the synergistic effect between the two raw materials. On the one hand, plasma treatment enhances the permeability and biological activity of aromatic heterocyclic amino acids, making it easier for them to bind to skin cells and play a role; on the other hand, the stability of the sodium hyaluronate cross-linked polymer is improved, and its water absorption and water locking ability is further enhanced.

[0038] Therefore, the present invention uses amino acids containing aromatic heterocycles on the side chains in combination with a small amount of sodium hyaluronate cross-linked polymers with a unique network structure, and uses a combined treatment method of mechanical grinding and oxygen-rich microwave plasma, which not only significantly enhances the moisturizing and nourishing skin care effects of amino acids, but also greatly improves its stability and compatibility in the formula system, thereby effectively solving the problems of poor high-temperature stability and short-lasting moisturizing effect of existing amino acid shower gels, and avoiding the problems of caking, sinking to the bottom, unevenness, etc. that existing amino acid shower gel products are prone to.

[0039] In some specific embodiments, the moisturizing body wash comprises the following components by weight percentage:

[0040] Surfactant 30%, modified amino acid 15%, flavor 0.3%, citric acid 0.6%, sodium hydroxide 0.15%, chelating agent 0.5%, preservative 0.5%, and the balance is water.

[0041] In some specific embodiments, the amino acid containing an aromatic heterocycle on the side chain includes at least one of histidine and tryptophan, preferably histidine and tryptophan in a weight ratio of 2:1.

[0042] In some specific embodiments, the weight ratio of the amino acid containing an aromatic heterocycle on the side chain to the sodium hyaluronate cross-linked polymer is 100:(3-7).

[0043] The present invention has found through further dosage screening experiments that the dosage of sodium hyaluronate cross-linked polymer should not be too much. When the dosage of sodium hyaluronate cross-linked polymer is too much, the amino acid containing aromatic heterocycles on the side chain and the sodium hyaluronate cross-linked polymer will show a certain degree of antagonism, weakening the synergistic effect of the two. Preferably, the weight ratio of the amino acid containing aromatic heterocycles on the side chain to the sodium hyaluronate cross-linked polymer is 100:5.5.

[0044] In some specific embodiments, the working condition parameters of the mixed grinding include: a grinding speed of 100 to 200 rpm, and a grinding time of 15 to 30 minutes.

[0045] In some specific embodiments, the step of oxygen-rich microwave plasma treatment includes the following process:

[0046] The mixture obtained by mixing and grinding the amino acid containing aromatic heterocycles in the side chain and the sodium hyaluronate cross-linked polymer is placed in a microwave plasma treatment device for oxygen-enriched microwave plasma treatment for 40 to 60 seconds, and then oxygen is continuously introduced for 5 to 10 minutes to obtain the modified amino acid;

[0047] The working condition parameters of the microwave plasma treatment equipment include: using oxygen and argon with a volume ratio of (5-8):1 as the working medium, setting the microwave power to 150-280W, the air intake volume to 60-70mL / min and the discharge mode to glow discharge.

[0048] In some specific embodiments, the surfactant includes at least one of sodium laureth sulfate (CAS registration number: 9004-82-4) and sodium methyl lauroyl taurate (also known as sodium lauroyl methyl taurate, CAS number: 4337-75-1); the surfactant is preferably composed of sodium laureth sulfate and sodium methyl lauroyl taurate in a weight ratio of 1:1.

[0049] In some specific embodiments, the chelating agent includes at least one of disodium ethylenediaminetetraacetate and tetrasodium ethylenediaminetetraacetate; the preservative includes at least one of German Euxyl PE9010 and phenoxyethanol; and the flavor includes at least one of mint flavor and lemon flavor.

[0050] In the second aspect, based on the same inventive concept, the present invention provides a method for preparing the moisturizing shower gel according to any one of the first aspects, such as Figure 1 As shown, the preparation method comprises the following steps:

[0051] The water, the surfactant and the chelating agent are mixed by ultrasonic stirring at a temperature of 55 to 65° C., and then the modified amino acid is added and the mixture is further mixed by ultrasonic stirring to obtain a first mixture;

[0052] The remaining components in the moisturizing shower gel are added to the first mixed material at a temperature of 40-50° C. and mixed by ultrasonic stirring to obtain the moisturizing shower gel.

[0053] The preparation method of the moisturizing shower gel provided in the embodiment of the present invention further improves the uniformity and stability of each component in the overall formula by ultrasonic mixing and stirring; at the same time, the preparation method of the moisturizing shower gel is simple, does not require additional specific equipment, and is suitable for batch industrial production. At the same time, the preparation method is based on the moisturizing shower gel described in any one of the first aspects, and therefore has at least the beneficial effects of the moisturizing shower gel described in any one of the first aspects, which will not be described one by one here.

[0054] In some specific embodiments, the working condition parameters of the ultrasonic stirring and mixing include: ultrasonic power of 300-400W, stirring speed of 400-500rpm, and stirring time of 10-20 minutes.

[0055] It should be noted that the components and raw materials involved in the moisturizing shower gel and the preparation method thereof provided in the embodiments of the present invention, unless otherwise specified or specified, can be directly commercially available products or homemade using existing public preparation methods; at the same time, the steps and parameters involved, unless otherwise specified or specified, can be carried out according to the existing processing technology of moisturizing shower gel or directly using existing equipment, and the present invention document will not describe them one by one.

[0056] The present invention will be further described below in conjunction with specific examples. It should be understood that these examples are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. The experimental methods in the following examples that do not specify specific conditions are usually measured according to national standards. If there is no corresponding national standard, then the conditions recommended by the manufacturer are followed.

[0057] Example 1

[0058] This example provides a skin moisturizing shower gel, which comprises the following components in percentage by weight:

[0059] Surfactant 30%, modified amino acid 15%, flavor 0.3%, citric acid 0.6%, sodium hydroxide 0.15%, chelating agent 0.5%, preservative 0.5%, the balance is water;

[0060] The surfactant is composed of sodium laureth sulfate and sodium methyl lauroyl taurate in a weight ratio of 1:1;

[0061] The flavor is lemon flavor;

[0062] The chelating agent is disodium ethylenediaminetetraacetate;

[0063] The preservative is Euxyl PE9010 from Germany;

[0064] The modified amino acid is obtained by mixing and grinding an amino acid containing an aromatic heterocycle on the side chain (specifically composed of histidine and tryptophan in a weight ratio of 2:1) and a sodium hyaluronate cross-linked polymer in a weight ratio of 100:5.5 and treating it with oxygen-enriched microwave plasma, specifically comprising the following steps:

[0065] The amino acid containing an aromatic heterocycle on the side chain and the sodium hyaluronate cross-linked polymer are mixed and ground for 20 minutes at a grinding speed of 150 rpm to obtain a mixture; the mixture obtained after the mixed and ground is placed in a microwave plasma treatment equipment for oxygen-enriched microwave plasma treatment for 50 seconds, and then oxygen is continuously introduced for 8 minutes to obtain the modified amino acid; wherein the working condition parameters of the microwave plasma treatment equipment include: using oxygen and argon with a volume ratio of 6:1 as the working medium, setting the microwave power to 235 W, the air intake to 65 mL / min, and the discharge mode to glow discharge.

[0066] The preparation method of the above-mentioned skin moisturizing shower gel comprises the following steps:

[0067] The water, the surfactant and the chelating agent were ultrasonically stirred and mixed at a temperature of 60°C, the ultrasonic power was 320W, the stirring speed was 450rpm, and the stirring time was 10 minutes; the modified amino acid was then added and ultrasonically stirred and mixed continuously, the ultrasonic power was 300W, the stirring speed was 400rpm, and the stirring time was 12 minutes, to obtain a first mixture;

[0068] The remaining components of the moisturizing shower gel were added to the first mixed material at a temperature of 45° C. and ultrasonically stirred and mixed at an ultrasonic power of 350 W, a stirring speed of 400 rpm, and a stirring time of 15 minutes to obtain the moisturizing shower gel.

[0069] Example 2

[0070] This example provides a skin moisturizing shower gel, which comprises the following components in percentage by weight:

[0071] Surfactant 25%, modified amino acid 10%, flavor 0.05%, citric acid 0.4%, sodium hydroxide 0.05%, chelating agent 0.1%, preservative 0.2%, balance water;

[0072] The surfactant is sodium laureth sulfate;

[0073] The flavor is lemon flavor;

[0074] The chelating agent is disodium ethylenediaminetetraacetate;

[0075] The preservative is Euxyl PE9010 from Germany;

[0076] The modified amino acid is obtained by mixing and grinding an amino acid (specifically tryptophan) having an aromatic heterocycle on the side chain and a sodium hyaluronate cross-linked polymer at a weight ratio of 100:3 and treating the mixture with oxygen-enriched microwave plasma, and specifically includes the following steps:

[0077] The amino acid containing an aromatic heterocycle on the side chain and the sodium hyaluronate cross-linked polymer are mixed and ground for 15 minutes at a grinding speed of 200 rpm to obtain a mixture; the mixture obtained after the mixed and ground is placed in a microwave plasma treatment equipment for oxygen-enriched microwave plasma treatment for 40 seconds, and then oxygen is continuously introduced for 10 minutes to obtain the modified amino acid; wherein the working condition parameters of the microwave plasma treatment equipment include: using oxygen and argon with a volume ratio of 5:1 as the working medium, setting the microwave power to 280 W, the air intake to 70 mL / min, and the discharge mode to glow discharge.

[0078] The preparation method of the above-mentioned skin moisturizing shower gel comprises the following steps:

[0079] The water, the surfactant and the chelating agent were ultrasonically stirred and mixed at a temperature of 60°C, the ultrasonic power was 320W, the stirring speed was 450rpm, and the stirring time was 10 minutes; the modified amino acid was then added and ultrasonically stirred and mixed continuously, the ultrasonic power was 300W, the stirring speed was 400rpm, and the stirring time was 12 minutes, to obtain a first mixture;

[0080] The remaining components of the moisturizing shower gel were added to the first mixed material at a temperature of 45° C. and ultrasonically stirred and mixed at an ultrasonic power of 350 W, a stirring speed of 400 rpm, and a stirring time of 15 minutes to obtain the moisturizing shower gel.

[0081] Example 3

[0082] This example provides a skin moisturizing shower gel, which comprises the following components in percentage by weight:

[0083] Surfactant 35%, modified amino acid 18%, flavor 0.5%, citric acid 0.8%, sodium hydroxide 0.3%, chelating agent 1%, preservative 0.8%, balance water;

[0084] The surfactant is sodium laureth sulfate;

[0085] The flavor is lemon flavor;

[0086] The chelating agent is disodium ethylenediaminetetraacetate;

[0087] The preservative is Euxyl PE9010 from Germany;

[0088] The modified amino acid is obtained by mixing and grinding an amino acid (specifically histidine) having an aromatic heterocycle on the side chain and a sodium hyaluronate cross-linked polymer at a weight ratio of 100:7 and treating the mixture with oxygen-enriched microwave plasma, and specifically includes the following steps:

[0089] The amino acid containing an aromatic heterocycle on the side chain and the sodium hyaluronate cross-linked polymer are mixed and ground for 30 minutes at a grinding speed of 100 rpm to obtain a mixture; the mixture obtained after the mixed and ground is placed in a microwave plasma treatment equipment for oxygen-enriched microwave plasma treatment for 60 seconds, and then oxygen is continuously introduced for 5 minutes to obtain the modified amino acid; wherein the working condition parameters of the microwave plasma treatment equipment include: using oxygen and argon with a volume ratio of 8:1 as the working medium, setting the microwave power to 150 W, the air intake to 60 mL / min, and the discharge mode to glow discharge.

[0090] The preparation method of the above-mentioned skin moisturizing shower gel comprises the following steps:

[0091] The water, the surfactant and the chelating agent were ultrasonically stirred and mixed at a temperature of 60°C, the ultrasonic power was 320W, the stirring speed was 450rpm, and the stirring time was 10 minutes; the modified amino acid was then added and ultrasonically stirred and mixed continuously, the ultrasonic power was 300W, the stirring speed was 400rpm, and the stirring time was 12 minutes, to obtain a first mixture;

[0092] The remaining components of the moisturizing shower gel were added to the first mixed material at a temperature of 45° C. and ultrasonically stirred and mixed at an ultrasonic power of 350 W, a stirring speed of 400 rpm, and a stirring time of 15 minutes to obtain the moisturizing shower gel.

[0093] Comparative Example 1

[0094] This example provides a moisturizing shower gel and a preparation method thereof, which differs from Example 1 only in that the amino acid with an aromatic heterocycle on the side chain is replaced with an amino acid without an aromatic heterocycle on the side chain (specifically methionine); the remaining steps and parameters are the same.

[0095] In percentage by weight, the emollient shower gel comprises the following components:

[0096] Surfactant 30%, modified amino acid 15%, flavor 0.3%, citric acid 0.6%, sodium hydroxide 0.15%, chelating agent 0.5%, preservative 0.5%, the balance is water;

[0097] The surfactant is composed of sodium laureth sulfate and sodium methyl lauroyl taurate in a weight ratio of 1:1;

[0098] The flavor is lemon flavor;

[0099] The chelating agent is disodium ethylenediaminetetraacetate;

[0100] The preservative is Euxyl PE9010 from Germany;

[0101] The modified amino acid is obtained by mixing and grinding methionine and sodium hyaluronate cross-linked polymer in a weight ratio of 100:5.5 and treating with oxygen-enriched microwave plasma, which specifically includes the following steps:

[0102] The methionine and sodium hyaluronate cross-linked polymer are mixed and ground for 20 minutes at a grinding speed of 150 rpm to obtain a mixture; the mixture obtained after the mixed and ground is placed in a microwave plasma treatment device for oxygen-enriched microwave plasma treatment for 50 seconds, and then oxygen is continuously introduced for 8 minutes to obtain the modified amino acid; wherein the working condition parameters of the microwave plasma treatment device include: using oxygen and argon with a volume ratio of 6:1 as the working medium, setting the microwave power to 235 W, the air intake to 65 mL / min, and the discharge mode to glow discharge.

[0103] The preparation method of the above-mentioned moisturizing shower gel is the same as that of Example 1.

[0104] Comparative Example 2

[0105] This example provides a moisturizing shower gel and a preparation method thereof, which differs from Example 1 only in that the amount of sodium hyaluronate cross-linked polymer is adjusted to 0 (i.e., the modified amino acid is obtained by grinding an amino acid having an aromatic heterocycle on the side chain and treating it with oxygen-enriched microwave plasma); the remaining steps and parameters are the same.

[0106] In percentage by weight, the emollient shower gel comprises the following components:

[0107] Surfactant 30%, modified amino acid 15%, flavor 0.3%, citric acid 0.6%, sodium hydroxide 0.15%, chelating agent 0.5%, preservative 0.5%, the balance is water;

[0108] The surfactant is composed of sodium laureth sulfate and sodium methyl lauroyl taurate in a weight ratio of 1:1;

[0109] The flavor is lemon flavor;

[0110] The chelating agent is disodium ethylenediaminetetraacetate;

[0111] The preservative is Euxyl PE9010 from Germany;

[0112] The modified amino acid is obtained by grinding an amino acid containing an aromatic heterocycle on the side chain and treating it with oxygen-rich microwave plasma, which specifically includes the following steps:

[0113] The amino acid containing an aromatic heterocycle on the side chain is ground for 20 minutes at a grinding speed of 150 rpm to obtain a grind; the obtained grind is placed in a microwave plasma treatment device for oxygen-enriched microwave plasma treatment for 50 seconds, and then oxygen is continuously introduced for 8 minutes to obtain the modified amino acid; wherein the working condition parameters of the microwave plasma treatment device include: using oxygen and argon with a volume ratio of 6:1 as the working medium, setting the microwave power to 235 W, the air intake to 65 mL / min, and the discharge mode to glow discharge.

[0114] The preparation method of the above-mentioned moisturizing shower gel is the same as that of Example 1.

[0115] Comparative Example 3

[0116] This example provides a moisturizing shower gel and a preparation method thereof, which differs from Example 1 only in that: the modified amino acid is obtained by mixing and grinding an amino acid having an aromatic heterocyclic ring on the side chain (specifically composed of histidine and tryptophan in a weight ratio of 2:1) and a sodium hyaluronate cross-linked polymer in a weight ratio of 100:5.5 (i.e., the modified amino acid is not treated with oxygen-enriched microwave plasma); the remaining steps and parameters are the same.

[0117] In percentage by weight, the emollient shower gel comprises the following components:

[0118] Surfactant 30%, modified amino acid 15%, flavor 0.3%, citric acid 0.6%, sodium hydroxide 0.15%, chelating agent 0.5%, preservative 0.5%, the balance is water;

[0119] The surfactant is composed of sodium laureth sulfate and sodium methyl lauroyl taurate in a weight ratio of 1:1;

[0120] The flavor is lemon flavor;

[0121] The chelating agent is disodium ethylenediaminetetraacetate;

[0122] The preservative is Euxyl PE9010 from Germany;

[0123] The modified amino acid is obtained by mixing and grinding an amino acid having an aromatic heterocyclic ring on the side chain (specifically composed of histidine and tryptophan in a weight ratio of 2:1) and a sodium hyaluronate cross-linked polymer in a weight ratio of 100:5.5, and specifically includes the following steps:

[0124] The amino acid containing an aromatic heterocycle on the side chain and the sodium hyaluronate cross-linked polymer were mixed and ground for 20 minutes at a grinding speed of 150 rpm to obtain the modified amino acid.

[0125] The preparation method of the above-mentioned moisturizing shower gel is the same as that of Example 1.

[0126] Comparative Example 4

[0127] This example provides a moisturizing shower gel and a preparation method thereof, which differs from Example 1 only in that: the modified amino acid is obtained by subjecting an amino acid having an aromatic heterocyclic ring on the side chain (specifically composed of histidine and tryptophan in a weight ratio of 2:1) and a sodium hyaluronate cross-linked polymer in a weight ratio of 100:5.5 to oxygen-enriched microwave plasma treatment (i.e., the modified amino acid is not ground); the remaining steps and parameters are the same.

[0128] In percentage by weight, the emollient shower gel comprises the following components:

[0129] Surfactant 30%, modified amino acid 15%, flavor 0.3%, citric acid 0.6%, sodium hydroxide 0.15%, chelating agent 0.5%, preservative 0.5%, the balance is water;

[0130] The surfactant is composed of sodium laureth sulfate and sodium methyl lauroyl taurate in a weight ratio of 1:1;

[0131] The flavor is lemon flavor;

[0132] The chelating agent is disodium ethylenediaminetetraacetate;

[0133] The preservative is Euxyl PE9010 from Germany;

[0134] The modified amino acid is obtained by subjecting amino acids containing aromatic heterocycles in the side chains (specifically composed of histidine and tryptophan in a weight ratio of 2:1) and sodium hyaluronate cross-linked polymer to oxygen-enriched microwave plasma treatment in a weight ratio of 100:5.5, and specifically includes the following process:

[0135] The amino acid containing an aromatic heterocycle on the side chain and the sodium hyaluronate cross-linked polymer are placed in a microwave plasma treatment device for oxygen-enriched microwave plasma treatment for 50 seconds, and then oxygen is continuously introduced for 8 minutes to obtain the modified amino acid; wherein the working condition parameters of the microwave plasma treatment device include: using oxygen and argon with a volume ratio of 6:1 as the working medium, setting the microwave power to 235W, the air intake to 65mL / min and the discharge mode to glow discharge.

[0136] The preparation method of the above-mentioned moisturizing shower gel is the same as that of Example 1.

[0137] Test Case

[0138] In this example, the performance of the moisturizing shower gels obtained in Examples 1 to 3 and Comparative Examples 1 to 4 was tested.

[0139] 1) High temperature stability test: 300 mL samples of the moisturizing shower gels obtained in Examples 1 to 3 and Comparative Examples 1 to 4 were taken, respectively, and placed in transparent containers and sealed, and then transferred to a 45°C environment for high temperature storage for 3 weeks, and then the obtained moisturizing shower gel products were observed to see if there were any caking, sinking, unevenness, etc. The test results are shown in Table 1.

[0140] 2) Moisturizing and emollient effect test: 70 subjects without skin diseases and of similar age were randomly divided into 7 groups, each with 10 subjects, and each group tried the emollient shower gel obtained in Examples 1 to 3 and Comparative Examples 1 to 4 respectively. Two 4 cm × 4 cm square experimental areas were marked on the arms of the subjects as the skin test areas of the emollient shower gel, and each group used the same bathing method to bathe the skin test areas; in the same test environment, a skin water and oil content tester was used to measure the moisture content of the skin test areas of each group of skin test areas before using the emollient shower gel and the moisture content of the skin test areas 2 hours after using the emollient shower gel. The test results are shown in Table 2.

[0141] Table 1

[0142]

[0143] Table 2

[0144]

[0145]

[0146] It can be seen from Table 1 and Table 2 that, compared with the comparative example, the moisturizing shower gel provided by the embodiment of the present invention is added with the specific modified amino acid of the present invention, and has excellent moisturizing and nourishing skin care effects, and the moisture content of the skin test area 2 hours after using the moisturizing shower gel is still significantly higher than the moisture content of the skin test area before use, indicating that its moisturizing and moisturizing effect is long-lasting; at the same time, without the need to additionally add a suspension stabilizer, the stability of the obtained shower gel formula system is significantly improved, thereby effectively solving the problems of poor high temperature stability and short-lasting moisturizing effect of existing amino acid shower gels.

[0147] Various embodiments of the present invention may be presented in the form of a range; it should be understood that the description in the form of a range is only for convenience and brevity, and should not be understood as a rigid limitation on the scope of the present invention; therefore, the range description should be considered to have specifically disclosed all possible sub-ranges and single numerical values ​​within the range. For example, the range description from 1 to 6 should be considered to have specifically disclosed sub-ranges, such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., as well as single numbers within the range, such as 1, 2, 3, 4, 5 and 6, which apply regardless of the range. In addition, whenever a numerical range is indicated herein, it is meant to include any cited number (fractional or integer) within the indicated range.

[0148] The foregoing is merely a specific embodiment of the present invention, which enables those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A moisturizing shower gel, characterized in that: In percentage by weight, the emollient shower gel comprises the following components: Surfactant 25-35%, modified amino acid 12-18%, flavor 0.05-0.5%, citric acid 0.4-0.8%, sodium hydroxide 0.05-0.3%, chelating agent 0.1-1%, preservative 0.2-0.8%, and the balance is water; The modified amino acid is obtained by mixing and grinding an amino acid containing an aromatic heterocycle on the side chain and a sodium hyaluronate cross-linked polymer and subjecting the mixture to oxygen-enriched microwave plasma treatment.

2. The body wash according to claim 1, characterized in that: In percentage by weight, the emollient shower gel comprises the following components: Surfactant 30%, modified amino acid 15%, flavor 0.3%, citric acid 0.6%, sodium hydroxide 0.15%, chelating agent 0.5%, preservative 0.5%, and the balance is water.

3. The body wash according to claim 1, characterized in that: The amino acid having an aromatic heterocyclic ring on the side chain includes at least one of histidine and tryptophan.

4. The body wash according to claim 1, characterized in that: The weight ratio of the amino acid containing an aromatic heterocycle on the side chain to the sodium hyaluronate cross-linked polymer is 100:(3-7).

5. The body wash according to claim 1, characterized in that: The working condition parameters of the mixed grinding include: a grinding speed of 100 to 200 rpm and a grinding time of 15 to 30 minutes.

6. The body wash according to claim 1, characterized in that: The steps of oxygen-rich microwave plasma treatment include the following processes: The mixture obtained by mixing and grinding the amino acid containing aromatic heterocycles in the side chain and the sodium hyaluronate cross-linked polymer is placed in a microwave plasma treatment device for oxygen-enriched microwave plasma treatment for 40 to 60 seconds, and then oxygen is continuously introduced for 5 to 10 minutes to obtain the modified amino acid; The working condition parameters of the microwave plasma treatment equipment include: using oxygen and argon with a volume ratio of (5-8):1 as the working medium, setting the microwave power to 150-280W, the air intake volume to 60-70mL / min and the discharge mode to glow discharge.

7. The body wash according to claim 1, characterized in that: The surfactant includes at least one of sodium laureth sulfate and sodium methyl lauroyl taurate.

8. The body wash according to claim 1, characterized in that: The chelating agent includes at least one of disodium ethylenediaminetetraacetate and tetrasodium ethylenediaminetetraacetate; the preservative includes at least one of German Euxyl PE9010 and phenoxyethanol; and the flavor includes at least one of mint flavor and lemon flavor.

9. A method for preparing the moisturizing shower gel according to any one of claims 1 to 8, characterized in that: The preparation method comprises the following steps: The water, the surfactant and the chelating agent are mixed by ultrasonic stirring at a temperature of 55 to 65° C., and then the modified amino acid is added and the mixture is further mixed by ultrasonic stirring to obtain a first mixture; The remaining components in the moisturizing shower gel are added to the first mixed material at a temperature of 40-50° C. and mixed by ultrasonic stirring to obtain the moisturizing shower gel.

10. The method for preparing the moisturizing shower gel according to claim 9, characterized in that: The working condition parameters of the ultrasonic stirring and mixing include: ultrasonic power of 300-400W, stirring speed of 400-500rpm, and stirring time of 10-20 minutes.

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