CN113633560A

CN113633560A - Needle-shaped amino acid crystal face-cleaning gel and preparation method thereof

Info

Publication number: CN113633560A
Application number: CN202111141454.7A
Authority: CN
Inventors: 李继德; 吴华养; 李空军; 陈思钰
Original assignee: Beautiful Link Biotechnology Research Institute Guangdong Co ltd
Current assignee: Beautiful Link Biotechnology Research Institute Guangdong Co ltd
Priority date: 2021-09-28
Filing date: 2021-09-28
Publication date: 2021-11-12
Anticipated expiration: 2041-09-28
Also published as: CN113633560B

Abstract

The invention discloses a needle-shaped amino acid crystal face-cleaning gel and a preparation method thereof, belonging to the field of daily chemical products. The face-cleaning gel comprises the following components: phase A component: water, disodium EDTA, glycerol; b phase component: cocamidopropyl betaine, potassium cocoyl glycinate, disodium lauryl sulfosuccinate, decyl glucoside, glyceryl oleate, sodium methyl cocoyl taurate, quaternary ammonium salt-80, sodium isostearoyl lactylate, plant amino acids, methyl hydroxybenzoate, sodium N-lauroyl-N-methyltaurate, dodecyl trimethyl ammonium chloride, and dodecyl dimethyl betaine. The N-lauroyl-N-methyltaurine sodium, the dodecyl trimethyl ammonium chloride and the dodecyl dimethyl betaine are subjected to electrostatic attraction to synergistically improve the foam stability.

Description

Needle-shaped amino acid crystal face-cleaning gel and preparation method thereof

Technical Field

The invention belongs to the field of daily chemical products, and particularly relates to needle-shaped amino acid crystal face-cleaning gel and a preparation method thereof.

Background

The cleansing creams on the market can be roughly classified into a soap-based system, a surfactant system, an emulsifying system, an amino acid system, and the like. The soap-based system facial cleanser has excellent foaming power and cleaning power, the skin feel is fresh and cool during washing, but the soap-based system facial cleanser is alkaline, has strong degreasing power and tight feel after washing, and has large irritation and damage to the skin after long-term use. Compared with a soap-based system, the surfactant system has smaller irritation and moderate degreasing force, but the surfactant is easy to remain, is not easy to clean and has greasy feeling after being washed. The emulsified system face cleansing cream has moist skin feel after washing, but has poor cleansing power and almost no foam. An amino acid facial cleanser is a facial cleanser which takes an acid amino acid salt as a main surfactant and is favored and pursued by consumers in recent years. Because the amino acid facial cleanser contains rich amino acid surfactant, the performance is extremely mild, the affinity with the skin is good, the hard water resistance is strong, the biodegradation is easy to occur, the foam is rich, stable and elastic, the skin is fresh, natural and not tight after the facial cleanser is used, and the facial cleanser has refreshing and smooth feeling and is favored by consumers.

The majority of the amino acid facial cleansing creams on the market currently mainly comprise sodium laurate glutamate, sodium cocoate glycinate and potassium cocoate glycinate surfactants which are independently used, or the three amino acid surfactants are compounded with cosurfactants such as disodium lauryl sulfosuccinate, sodium hydroxyethyl sulfonate, sodium methyl cocoate taurate and the like. However, the lauric acid sodium glutamate facial cleanser has the defects of difficult thickening, soft cream body, difficult making of pearly-lustre cream body, larger and not rich foam, high cost and the like. The coconut oil acid sodium glycinate cleansing cream is mild, low in irritation and rich in foam, but has no slippery feel during washing, and has the problems of thick cream, poor extensibility, skin-pulling feel during smearing, foaming inhibition and the like after long-time storage or heat resistance test. The potassium cocoate glycinate is a surfactant which is commonly used in the industry and is suitable for face cleaning products, but the face cleaning cream prepared by using the potassium cocoate glycinate surfactant alone is easy to have the problems of thin body, lack of stability, particle precipitation after long-time storage, rough body, layering and the like. The amino acid cleansing cream prepared by compounding the potassium glycinate cocoate surfactant and disodium succinate has large and dispersed foam, is in a wire-drawing shape after being placed for a long time and is heat-resistant, and sometimes has fine particles separated out.

Chinese patent document 'amino acid skin-activating facial cleanser with mild cleaning and moisturizing effects and preparation method thereof (patent application number is CN 201910602179.0)' discloses that the facial cleanser comprises 26.59-78.4 parts of group B raw materials. The component of the B group raw material and the weight portion of each component are as follows: 0.5-4.5 parts of sodium lauroyl glutamate, 3.8-13.5 parts of cocoyl glycinate, 20-47.8 parts of surfactant, 1.2-6 parts of sodium taurate laurate, 0.5-3 parts of ethylene glycol distearate, 0.5-3 parts of moisturizing foaming agent, 0.01-0.3 part of disodium lauryl sulfosuccinate and 0.08-0.3 part of p-hydroxyacetophenone. The surfactant interacts with the components such as sodium lauroyl glutamate and cocoyl glycinate, so that the foaming of the amino acid cleansing milk can be promoted, the stability and the fineness of the foaming are promoted, and the problem that the foam stability needs to be improved still exists.

Disclosure of Invention

The invention aims to provide needle-shaped amino acid crystal face-cleaning gel and a preparation method thereof, and aims to solve the problem of how to optimize components, dosage, process and the like on the basis of the disclosure of Chinese patent document 'amino acid skin-activating face-cleaning milk with mild cleaning and moisture preservation and a preparation method thereof (the patent application number is CN 201910602179.0)', so that the foam stability of the needle-shaped amino acid crystal face-cleaning gel is improved.

In order to solve the technical problems, the invention adopts the following technical scheme:

the needle-shaped amino acid crystal face-cleaning gel comprises the following components:

phase A component: 11-20 parts of water, 0.1-0.2 part of EDTA disodium and 12-17 parts of glycerol;

b phase component: 10-15 parts of cocamidopropyl betaine, 8-12 parts of potassium cocoyl glycinate, 1-3 parts of disodium lauryl sulfosuccinate, 0.5-1.5 parts of decyl glucoside, 0.5-1.5 parts of glyceryl oleate, 8-12 parts of sodium methyl cocoyl taurate, 800.1-0.3 part of quaternary ammonium salt, 0.2-0.4 part of sodium isostearoyl lactylate, 0.1-0.2 part of plant amino acids, 0.1-0.2 part of methyl hydroxybenzoate, 0.4-0.8 part of sodium N-lauroyl-N-methyltaurate, 0.1-0.4 part of dodecyl trimethyl ammonium chloride and 0.2-0.4 part of dodecyl dimethyl betaine.

Preferably, the facial gel further comprises a C-phase component: 10-14 parts of taurine.

Preferably, the facial gel further comprises a phase D component: 6-10 parts of acrylic acid (ester) copolymer and 12-20 parts of water.

Preferably, the facial gel further comprises an E phase component: 0.032-0.096 portion of sodium hydroxide.

Preferably, the facial gel further comprises a phase F component: 0.4-0.8 part of phenoxyethanol, 0.1-0.3 part of pigment CI741600.0001 and 0.1-0.3 part of essence.

Preferably, the cleansing gel further comprises a G phase component: 0.03-0.3 part of taurine.

Preferably, the phase B component comprises 12 parts of cocamidopropyl betaine, 10 parts of potassium cocoyl glycinate, 2 parts of disodium lauryl sulfosuccinate, 1 part of decyl glucoside, 1 part of glyceryl oleate, 10 parts of sodium methyl cocoyl taurate, 800.2 parts of quaternary ammonium salt-800.2 parts of sodium isostearoyl lactylate, 0.15 part of vegetable amino acids, 0.15 part of methylparaben, 0.6 part of sodium N-lauroyl-N-methyltaurate, 0.3 part of dodecyl trimethyl ammonium chloride and 0.3 part of dodecyl dimethyl betaine.

The invention also provides a preparation method of the needle-shaped amino acid crystal face-cleaning gel, which comprises the following steps:

s1, cleaning and disinfecting an emulsifying pot, adding water in the raw materials in the group A into a reaction kettle, adding the rest raw materials in the group A, and stirring and dissolving completely;

s2, heating the solution to 80-85 ℃, sequentially adding the phase B components, stirring to dissolve, adding the group C raw materials, and keeping the temperature for 30-40 min;

s3, cooling the solution to 70-75 ℃, diluting the acrylic acid (ester) copolymer in the phase D with water in advance, slowly putting the mixture into an emulsifying pot, slowly stirring the mixture, uniformly dispersing the mixture, adding a sodium hydroxide solution dissolved in advance in the phase E, and stirring and neutralizing the mixture for 30min until a material body is transparent;

s4, cooling to 50-60 ℃, sequentially adding the pigment, the preservative and the essence of the phase F component, then cooling to 45-48 ℃, adding the phase G component, stirring for 2-3min, stopping stirring, and discharging.

S5, standing for 3-5h, and crystallizing and forming to obtain a finished product.

Preferably, the stirring speed in the step S1 is 20-30r/min, and the dissolving temperature is 50-60 ℃.

Preferably, the acrylic acid (ester) -based copolymer in the step S3 is diluted 3-5 times with water.

The invention has the following beneficial effects:

(1) as can be seen from the data of example 1 and comparative examples 1 to 4, N-lauroyl-N-methyltaurine sodium salt, dodecyltrimethylammonium chloride and dodecyldimethylbetaine are added to the acicular amino acid crystal cleansing gel, wherein ammonium ions in the dodecyltrimethylammonium chloride have positive charges and electrostatic attraction exists between negative charges carried by the head groups of N-lauroyl-N-methyltaurine sodium salt particles, so that micelles are easily formed, and the surface tension is reduced; in addition, electrostatic attraction exists between partial positive charges carried by the dodecyl dimethyl betaine particle head group and negative charges carried by the N-lauroyl-N-methyl sodium taurate particle head group, so that micelles are easier to form, and surfactant molecules are arranged more densely on the surface of the solution; the synergistic effect of N-lauroyl-N-methyltaurine sodium, dodecyl trimethyl ammonium chloride and dodecyl dimethyl betaine is illustrated.

In addition, the cleansing gel of the invention also has good foaming stability, because the electrostatic attraction exists between the N-lauroyl-N-methyltaurine sodium and the dodecyl trimethyl ammonium chloride and the dodecyl dimethyl betaine, the surfactant molecules are more closely arranged in an interfacial film, the film strength is increased, the surface viscosity is enhanced, the gas is not easy to permeate, the liquid discharge speed of the film is reduced, the foam is not easy to break, and the stability is good.

(2) Patent document cited in background technology "amino acid skin-activating facial cleanser with mild cleaning and moisture retention and preparation method thereof (patent application number is CN 201910602179.0)", although the surfactant in the invention interacts with sodium lauroyl glutamate, cocoyl glycinate and other components to promote foaming of amino acid facial cleanser and promote stability and smoothness of foaming, the problem that the facial cleansing effect is still to be improved still exists, based on solving the technical problems, the invention further optimizes and improves the formula and process of the invention, and multiple experimental studies show that when N-lauroyl-N-methyltaurine, dodecyltrimethylammonium chloride and dodecyldimethylbetaine are added into needle-shaped amino acid crystal facial cleanser, N-lauroyl-N-methyltaurine, dodecyltrimethylammonium chloride and dodecyldimethylbetaine are added, wherein N-lauroyl-N-methyltaurine, dodecyltrimethylammonium chloride and dodecyldimethylbetaine Electrostatic attraction exists between the foam and the foam to synergistically improve the stability of the foam; the technical problems appearing in the background art documents can be solved, and unexpected effects are produced.

Detailed Description

For a better understanding of the present invention, the following examples are given to illustrate, but not to limit the scope of the present invention.

The acicular amino acid crystal face-cleaning jelly described in the following examples comprises the following components:

C phase component: 10-14 parts of taurine.

And (3) phase D component: 6-10 parts of acrylic acid (ester) copolymer and 12-20 parts of water.

Phase E component: 0.032-0.096 portion of sodium hydroxide.

And F phase component: 0.4-0.8 part of phenoxyethanol, 0.1-0.3 part of pigment CI741600.0001 and 0.1-0.3 part of essence.

A G phase component: 0.03-0.3 part of taurine.

The preparation method of the needle-shaped amino acid crystal cleansing gel comprises the following steps:

s1, cleaning and disinfecting an emulsifying pot, adding water in the raw materials in the group A into a reaction kettle, adding the rest raw materials in the group A, and stirring and dissolving completely at the stirring speed of 20-30r/min and the dissolving temperature of 50-60 ℃;

s3, cooling the solution to 70-75 ℃, diluting the acrylic acid (ester) copolymer in the phase D with water in advance by 3-5 times, slowly putting the mixture into an emulsifying pot, slowly stirring the mixture, uniformly dispersing the mixture, adding the sodium hydroxide solution dissolved in advance in the phase E, and stirring and neutralizing the mixture for 30min until the material body is transparent;

The following is a more specific example.

Example 1

phase A component: 15 parts of water, 0.15 part of EDTA disodium and 14 parts of glycerol;

b phase component: 12 parts of cocamidopropyl betaine, 10 parts of potassium cocoyl glycinate, 2 parts of disodium lauryl sulfosuccinate, 1 part of decyl glucoside, 1 part of glyceryl oleate, 10 parts of sodium methyl cocoyl taurate, 800.2 parts of quaternary ammonium salt, 0.3 part of sodium isostearoyl lactylate, 0.15 part of vegetable amino acids, 0.15 part of methyl hydroxybenzoate, 0.6 part of sodium N-lauroyl-N-methyltaurate, 0.3 part of dodecyl trimethyl ammonium chloride and 0.3 part of dodecyl dimethyl betaine.

C phase component: and 12 parts of taurine.

And (3) phase D component: 8 parts of acrylic acid (ester) copolymer and 17 parts of water.

Phase E component: 0.065 part of sodium hydroxide.

And F phase component: 0.5 part of phenoxyethanol, 0.2 part of pigment CI 741600.0005 part of essence.

A G phase component: 0.18 part of taurine.

s1, cleaning and disinfecting an emulsifying pot, adding water in the raw materials in the group A into a reaction kettle, adding the rest raw materials in the group A, and stirring at a stirring speed of 25r/min and a dissolving temperature of 55 ℃ to dissolve completely;

s2, heating the solution to 83 ℃, sequentially adding the phase B components, stirring to dissolve, adding the group C raw materials, and keeping the temperature for 35 min;

s3, cooling the solution to 72 ℃, diluting the acrylic acid (ester) copolymer in the phase D with water in advance by 3-5 times, slowly putting the solution into an emulsifying pot, slowly stirring the solution, uniformly dispersing the solution, adding the dissolved sodium hydroxide solution in the phase E, and stirring and neutralizing the solution for 30min until the material body is transparent;

and S4, cooling to 52 ℃, sequentially adding the pigment, the preservative and the essence of the phase F component, then cooling to 47 ℃, adding the phase G component, stirring for 2min, stopping stirring, and discharging.

S5, standing for 4 hours, and crystallizing and forming to obtain a finished product.

Example 2

phase A component: 16 parts of water, 0.1 part of EDTA disodium and 17 parts of glycerol;

b phase component: 10 parts of cocamidopropyl betaine, 12 parts of potassium cocoyl glycinate, 1 part of disodium lauryl sulfosuccinate, 1.2 parts of decyl glucoside, 1.5 parts of glyceryl oleate, 11 parts of sodium methyl cocoyl taurate, 800.2 parts of quaternary ammonium salt-sodium isostearoyl lactylate, 0.1 part of vegetable amino acids, 0.2 part of methyl hydroxybenzoate, 0.6 part of sodium N-lauroyl-N-methyltaurate, 0.3 part of dodecyl trimethyl ammonium chloride and 0.3 part of dodecyl dimethyl betaine.

C phase component: and 14 parts of taurine.

And (3) phase D component: 9 parts of acrylic acid (ester) copolymer and 12 parts of water.

Phase E component: 0.069 portion of sodium hydroxide.

And F phase component: 0.4 part of phenoxyethanol, 0.2 part of pigment CI 741600.001 part of essence.

A G phase component: 0.3 part of taurine.

s1, cleaning and disinfecting an emulsifying pot, adding water in the raw materials in the group A into a reaction kettle, adding the rest raw materials in the group A, and stirring at a stirring speed of 26r/min and a dissolving temperature of 50 ℃ to dissolve completely;

s2, heating the solution to 80 ℃, sequentially adding the phase B components, stirring and dissolving, adding the group C raw materials, and keeping the temperature for 30 min;

s3, cooling the solution to 72 ℃, diluting the acrylic acid (ester) copolymer in the phase D with water in advance by 3 times, slowly putting the solution into an emulsifying pot, slowly stirring the solution and dispersing the solution uniformly, then adding the dissolved sodium hydroxide solution in the phase E, stirring the solution and neutralizing the solution for 30min until the material body is transparent;

and S4, cooling to 50 ℃, sequentially adding the pigment, the preservative and the essence of the F phase component, then cooling to 48 ℃, adding the G phase component, stirring for 2min, stopping stirring, and discharging.

S5, standing for 5 hours, and crystallizing and forming to obtain a finished product.

Example 3

phase A component: 20 parts of water, 0.15 part of EDTA disodium and 12 parts of glycerol;

b phase component: 12 parts of cocamidopropyl betaine, 8 parts of potassium cocoyl glycinate, 2 parts of disodium lauryl sulfosuccinate, 1.5 parts of decyl glucoside, 0.5 part of glyceryl oleate, 12 parts of sodium methyl cocoyl taurate, 800.3 parts of quaternary ammonium salt-sodium isostearoyl lactylate, 0.15 part of vegetable amino acids, 0.1 part of methyl hydroxybenzoate, 0.8 part of sodium N-lauroyl-N-methyltaurate, 0.4 part of dodecyl trimethyl ammonium chloride and 0.4 part of dodecyl dimethyl betaine.

C phase component: 10 parts of taurine.

And (3) phase D component: 10 parts of acrylic acid (ester) copolymer and 15 parts of water.

Phase E component: 0.096 part of sodium hydroxide.

And F phase component: 0.5 part of phenoxyethanol, 0.3 part of pigment CI741600.0001 part of essence.

A G phase component: 0.03 part of taurine.

s1, cleaning and disinfecting an emulsifying pot, adding water in the raw materials in the group A into a reaction kettle, adding the rest raw materials in the group A, and stirring and dissolving completely at the stirring speed of 30r/min and the dissolving temperature of 55 ℃;

s2, heating the solution to 82 ℃, sequentially adding the phase B components, stirring to dissolve, adding the group C raw materials, and keeping the temperature for 35 min;

s3, cooling the solution to 75 ℃, diluting the acrylic acid (ester) copolymer in the phase D with water in advance by 3-5 times, slowly putting the solution into an emulsifying pot, slowly stirring the solution, uniformly dispersing the solution, adding the dissolved sodium hydroxide solution in the phase E, and stirring and neutralizing the solution for 30min until the material body is transparent;

and S4, cooling to 55 ℃, sequentially adding the pigment, the preservative and the essence of the F phase component, then cooling to 45 ℃, adding the G phase component, stirring for 3min, stopping stirring, and discharging.

S5, standing for 3 hours, and crystallizing and forming to obtain a finished product.

Example 4

phase A component: 11 parts of water, 0.2 part of EDTA disodium and 14 parts of glycerol;

b phase component: 15 parts of cocamidopropyl betaine, 9 parts of potassium cocoyl glycinate, 3 parts of disodium lauryl sulfosuccinate, 0.5 part of decyl glucoside, 0.9 part of glyceryl oleate, 8 parts of sodium methyl cocoyl taurate, 800.1 parts of quaternary ammonium salt, 0.4 part of sodium isostearoyl lactylate, 0.1 part of vegetable amino acids, 0.15 part of methyl hydroxybenzoate, 0.4 part of sodium N-lauroyl-N-methyltaurate, 0.1 part of dodecyl trimethyl ammonium chloride and 0.2 part of dodecyl dimethyl betaine.

C phase component: and 11 parts of taurine.

And (3) phase D component: 6 parts of acrylic acid (ester) copolymer and 20 parts of water.

Phase E component: 0.032 portion of sodium hydroxide.

And F phase component: 0.8 part of phenoxyethanol, 0.3 part of pigment CI 741600.0008 part of essence.

A G phase component: 0.15 part of taurine.

s1, cleaning and disinfecting an emulsifying pot, adding water in the raw materials in the group A into a reaction kettle, adding the rest raw materials in the group A, and stirring at a stirring speed of 20r/min and a dissolving temperature of 60 ℃ to dissolve completely;

s2, heating the solution to 85 ℃, sequentially adding the phase B components, stirring and dissolving, adding the group C raw materials, and keeping the temperature for 40 min;

s3, cooling the solution to 70 ℃, diluting the acrylic acid (ester) copolymer in the phase D with water in advance by 3-5 times, slowly putting the solution into an emulsifying pot, slowly stirring the solution, uniformly dispersing the solution, adding the dissolved sodium hydroxide solution in the phase E, and stirring and neutralizing the solution for 30min until the material body is transparent;

and S4, cooling to 60 ℃, sequentially adding the pigment, the preservative and the essence of the F phase component, then cooling to 46 ℃, adding the G phase component, stirring for 3min, stopping stirring, and discharging.

Comparative example 1

The procedure of example 1 was followed except that N-lauroyl-N-methyltaurine sodium salt, dodecyltrimethylammonium chloride and dodecyldimethylbetaine were not added to prepare a needle-shaped amino acid crystal face-cleansing gel.

Comparative example 2

The procedure was essentially the same as in example 1 except that the needle-shaped amino acid crystal face-cleansing gel was prepared without adding sodium N-lauroyl-N-methyltaurate.

Comparative example 3

The procedure was substantially the same as in example 1 except that no dodecyltrimethylammonium chloride was added to prepare a needle-shaped amino acid crystal face-cleansing gel.

Comparative example 4

The procedure was essentially the same as in example 1, except that needle-shaped amino acid crystal cleansing gel was prepared without adding dodecyl dimethyl betaine.

Comparative example 5

The amino acid skin-activating facial cleanser is prepared by the method in example 1 in Chinese patent document 'amino acid skin-activating facial cleanser with mild cleaning and moisturizing effects and preparation method thereof (patent application number is CN 201910602179.0').

Facial gels and creams were prepared according to the methods of examples 1 to 4 and comparative examples 1 to 5, and the surface tensions of the respective groups of facial gels and creams were measured at 25 ℃ using 0.1mol/LNaCl as a solvent, and the results are shown in the following tables.

From the above table, it can be seen that: (1) as can be seen from the data of examples 1-4 and comparative example 5, the surface tension of the surfactant in the facial gels prepared in examples 1-4 was significantly lower than that of the facial milk prepared in comparative example 5, the foam stability of the facial gels prepared in examples 1-4 was significantly higher than that of the facial milk prepared in comparative example 5 and example 1 was the most preferable example.

(2) As can be seen from the data of example 1 and comparative examples 1 to 4, N-lauroyl-N-methyltaurine sodium salt, dodecyltrimethylammonium chloride and dodecyldimethylbetaine are added to the acicular amino acid crystal cleansing gel, wherein ammonium ions in the dodecyltrimethylammonium chloride have positive charges and electrostatic attraction exists between negative charges carried by the head groups of N-lauroyl-N-methyltaurine sodium salt particles, so that micelles are easily formed, and the surface tension is reduced; in addition, electrostatic attraction exists between partial positive charges carried by the dodecyl dimethyl betaine particle head group and negative charges carried by the N-lauroyl-N-methyl sodium taurate particle head group, so that micelles are easier to form, and surfactant molecules are arranged more densely on the surface of the solution; the synergistic effect of N-lauroyl-N-methyltaurine sodium, dodecyl trimethyl ammonium chloride and dodecyl dimethyl betaine is illustrated.

In addition, the facial cleansing gel also has good foamability, because the electrostatic attraction exists between the N-lauroyl-N-methyltaurine sodium and the dodecyl trimethyl ammonium chloride and the dodecyl dimethyl betaine, the surfactant molecules are more tightly arranged in an interfacial film, the film strength is increased, the surface viscosity is enhanced, the gas is not easy to permeate, the liquid discharge speed of the film is reduced, the foam is not easy to break, and the stability is good.

The face cleaning effect of the amino acid crystal face cleaning gel is tested as follows:

[ test protocol ]

1. Selecting 30 volunteers meeting the conditions to participate in the test;

2. at the first visit (initial value), before the test, the subjects used a needle-like amino acid crystal cleansing gel to clean their faces, wiped dry with a paper towel, at test ambient temperature: 20 ℃ to 22 ℃, humidity: sitting still for 30min in 40-60% environment, and collecting data by VISIA. Before using the product, collecting data once by using a Skin-SP tester at 2 hours and 4 hours after using the product, wherein the data are collected for three times;

3. for the next visit, data was collected using VISIA for a 3 week period. Week 1, week 2, week 3; data is collected once by the center (error of 1 day before and after acceptance)

4. All other oil-controlling, fine-pore products were banned throughout the study, and no changes to the usual skin care products were allowed for the week before and during the study.

[ parameter interpretation ]

And (3) counting pore characteristics: a larger pore characteristic count value indicates a larger number of pores.

Oil index: the higher the value of the oil index, the more oil the skin is.

Testing instrument

1. VISIA (facial skin analysis instrument)

2. Skin-SP tester

[ test Environment ]

The environmental requirements are as follows: temperature: 20-22 ℃; humidity: 40 to 60 percent

[ test procedure ]

1. And (3) experimental design: continuous 3 weeks use (however, allow for an error of 1 day before and after)

2. The test process comprises the following steps:

1) at the first visit, subjects were instructed to perform the trial and signed an informed consent.

2) And (4) screening the visiting subjects according to the test requirements, screening 30 subjects in the group, and finally ensuring that 30 subjects are completed.

3) After the qualified testee is screened and the face is cleaned by mild facial cleanser, the testee is rested for 30min in a constant temperature and humidity room, and after 30min, the face is subjected to instrument test.

4) After the test was completed, the subject was instructed to use, after the subject listened to the instructions, the product was dispensed, and the subject used the test samples at home for 3 weeks. During this period, the subjects followed the instructions of the test and visited again after 1 week, 2 weeks, 3 weeks of the product used in succession, and the procedure followed step 3) for the facial test with the satisfaction questionnaire being filled out. The method adopts a 5-point system (5 points are very satisfactory, 4 points are satisfactory, 3 points are general, 2 points are unsatisfactory, and 1 point is very unsatisfactory.)

3. Cheek for observation and test

4. And (3) observing and testing items: the subjects were tested on the instrument 7 times before use, 2 hours, 4 hours, 1 week, 2 weeks, 3 weeks after use.

1) And (3) counting pore characteristics: three-sided photographs were taken using VISIA.

2) Oil index: the average was taken 3 times using the Skin-SP tester.

[ statistical method of test results ]

The data statistical analysis method comprises the following steps: the EXCEL software is used to perform descriptive statistics on various measurements, including quantity, mean, standard deviation, minimum, maximum, etc.

[ test results ]

The test results are shown in tables 1 and 2

TABLE 1 real-time oil control effect data

TABLE 2 pore characteristics count data

Remarking: the test values in table 1 are the grease index, the test values in table 2 are the pore characteristic count, Mean is the Mean value, and SD is the standard deviation value.

The above description should not be taken as limiting the invention to the embodiments, but rather, as will be apparent to those skilled in the art to which the invention pertains, numerous simplifications or substitutions may be made without departing from the spirit of the invention, which shall be deemed to fall within the scope of the invention as defined by the claims appended hereto.

Claims

1. The needle-shaped amino acid crystal face-cleaning gel is characterized by comprising the following components:

2. The needle-shaped amino acid crystal cleansing gel according to claim 1, further comprising a C-phase component: 10-14 parts of taurine.

3. The needle-shaped amino acid crystal cleansing gel according to claim 2, further comprising a phase D component: 6-10 parts of acrylic acid (ester) copolymer and 12-20 parts of water.

4. The needle-shaped amino acid crystal cleansing gel according to claim 3, further comprising an E phase component: 0.032-0.096 portion of sodium hydroxide.

5. The needle-shaped amino acid crystal cleansing gel according to claim 4, further comprising a phase F component: 0.4-0.8 part of phenoxyethanol, 0.1-0.3 part of pigment CI741600.0001 and 0.1-0.3 part of essence.

6. The needle-shaped amino acid crystal cleansing gel according to claim 5, further comprising a G-phase component: 0.03-0.3 part of taurine.

7. The needle-shaped amino acid crystal cleansing gel according to claim 1, wherein the phase B component comprises 12 parts of cocamidopropyl betaine, 10 parts of potassium cocoyl glycinate, 2 parts of disodium lauryl sulfosuccinate, 1 part of decyl glucoside, 1 part of glyceryl oleate, 10 parts of sodium methylcocoyl taurate, 800.2 parts of quaternary ammonium salt, 0.3 part of sodium isostearoyl lactylate, 0.15 part of vegetable amino acids, 0.15 part of methyl hydroxybenzoate, 0.6 part of sodium N-lauroyl-N-methyltaurate, 0.3 part of dodecyltrimethylammonium chloride, and 0.3 part of dodecyldimethylbetaine.

8. A method of preparing the needle-shaped amino acid crystal cleansing gel according to claim 1, comprising the steps of:

9. The method for preparing the needle-shaped amino acid crystal cleansing gel according to claim 8, wherein the stirring speed is 20 to 30r/min and the dissolving temperature is 50 to 60 ℃ in the step S1.

10. The method of preparing an acicular amino acid crystal cleansing gel according to claim 8, wherein the acrylic acid (ester) copolymer is diluted 3-5 times with water in the step S3.