Cleaning composition specially researched for sensitive skin and preparation method thereof

Abstract

The invention discloses a cleaning composition specially researched for sensitive skin and a preparation method of the cleaning composition, and particularly belongs to the field of face cleaning and nursing. The cleaning composition comprises the following components: glycerol, a stabilizer, a skin conditioning component, sodium cocoyl glycinate dry powder, disodium cocoyl glutamate, a sodium cocoyl glycinate solution and a betaine type surfactant, according to the cleaning composition, on the premise that fatty acid is not added, through reasonable matching of the sodium cocoyl glycinate dry powder, the sodium cocoyl glycinate solution, the disodium cocoyl glutamate and the betaine type surfactant, the effects of being rich in foam, soft, dense, mild and non-irritating are achieved, and the cleaning composition is suitable for sensitive skin to use.

Description

Technical Field

[0001] The invention belongs to the field of facial cleansing and nursing, and specifically relates to a cleaning composition specially developed for sensitive skin and a preparation method thereof. Background Art

[0002] The skin cleaning compositions on the market mainly include cleansing cream, facial cleanser, facial cream, facial mousse, facial powder, etc. These products have their own characteristics and are suitable for different skin types and cleaning needs. Among them, amino acid facial cleansers are mainly made of amino acid surfactants, or facial cleansers made by assisting other surfactants to foam. Amino acid surfactants, as surfactant raw materials synthesized from natural amino acids, are biodegradable, reduce pollution to soil and water bodies, are very environmentally friendly and conducive to sustainable development. Compared with traditional cleansing products, amino acid cleansing is more gentle, will not damage the natural barrier of the skin, can gently remove dirt and grease, and keep the skin clean and healthy. The market potential of sensitive skin cleansers is huge, and amino acid cleansers are in a dominant position. At present, amino acid cleansers mainly include thickening type and self-crystallizing type. The biggest feature of amino acid cleansers on the market is that they are gentle and have relatively less foam.

[0003] Technical methods and shortcomings in the industry:

[0004] 1. Most amino acid cleansers on the market can be made through self-crystallization technology, which can foam quickly and gently, but the foam is small, loose, not dense and three-dimensional enough. Figure 1 As shown;

[0005] 2. The existing technology increases the richness and density of foam by adding fatty acids, but fatty acids are soap-based ingredients and are also acne-causing ingredients, which are not very popular with consumers. Figure 2 shown. Summary of the invention

[0006] In view of the deficiencies of the prior art, the present invention aims to provide a cleansing composition specially designed for sensitive skin, which has rich, dense foam and is mild and non-irritating without adding fatty acids, and a preparation method thereof.

[0007] To achieve the above object, the present invention discloses the following technical solutions:

[0008] In a first aspect, the present invention provides a cleaning composition specially developed for sensitive skin and a preparation method thereof, which comprises the following components by mass percentage:

[0009]

[0010]

[0011] Also contains water.

[0012] The concentration of the sodium cocoyl glycinate solution is ≤25wt%.

[0013] Preferably, the stabilizer is at least one of polyglyceryl-10 laurate and acrylic acid (ester) copolymer.

[0014] Preferably, the skin conditioning component is acetyltyrosine, acetylcysteine, alanine;

[0015] The mass ratio of acetyltyrosine, acetylcysteine ​​and alanine is 3:1:1.

[0016] Furthermore, the skin conditioning component also includes at least one of 4-tert-butyl cyclohexanol, glycine max seed extract, schisandra chinensis extract, dendrobium officinale stem extract, hydrangea extract, sodium hyaluronate, camellia extract, acetylated sodium hyaluronate, sodium hyaluronate cross-linked polymer, hydrolyzed sodium hyaluronate, β-glucan, and Selaginella extract.

[0017] Preferably, the betaine-type surfactant is at least one of lauryl hydroxysulfonyl betaine, lauryl hydroxysulfonyl betaine, cocamidopropyl betaine and cocoyl hydroxysulfonyl betaine.

[0018] Preferably, it also contains chelating agents, neutralizing agents, pearlescent flakes, citric acid, preservatives, flavors, and cationic conditioning agents.

[0019] More preferably, the chelating agent is disodium EDTA.

[0020] More preferably, the neutralizing agent is at least one of potassium hydroxide and sodium hydroxide.

[0021] Further preferably, the preservative is at least one of p-hydroxyacetophenone, 1,2-hexanediol, caprylhydroxamic acid, lauroyl arginine ethyl ester hydrochloride, caprylyl glycol, ethylhexylglycerin, and glyceryl caprylate.

[0022] Further preferably, the cationic conditioning agent is at least one of polyquaternium-10, polyquaternium-39, and polyquaternium-6.

[0023] In a second aspect, the present invention provides a cleansing composition specially formulated for sensitive skin according to the first aspect and a preparation method thereof, comprising the following steps:

[0024] S1. Disperse the cationic conditioning agent and part of the glycerol and stir with water and homogenize to obtain a uniformly dispersed mixture A for later use;

[0025] S2. Heat and stir the preservative until it is evenly dissolved to obtain a mixture B for later use;

[0026] S3. Take part of the stabilizer and the remaining glycerin and mix, stir evenly, add the neutralizer dissolved in water, then add the chelating agent, part of the skin conditioning agent, and sodium cocoyl glycinate powder in turn, stir and disperse evenly to obtain a mixture C;

[0027] S4. Sodium cocoyl glycinate solution, disodium cocoyl glutamate, potassium cocoyl glycinate, and the remaining stabilizer are added to the mixture C in sequence, and the mixture is stirred and dispersed uniformly at 80-85° C., and then the mixture A is added, and after the mixture is uniformly dispersed, betaine-type surfactant, pearlescent flakes and citric acid are added in sequence, and the mixture is stirred and dispersed uniformly, and the mixture is kept warm for 20-30 minutes to obtain a mixture D;

[0028] S5. Cool the mixture D to 55-58°C, add the mixture B, stir evenly, cool it to 43-48°C, keep it warm and stir until the material has a pearlescent luster, then add the remaining skin conditioner and fragrance in sequence, stir evenly, cool it to 40-43°C, sieve, and obtain a cleansing composition specially developed for sensitive skin.

[0029] Beneficial effects of the present invention:

[0030] 1. The facial cleanser provided by the present invention has rich and dense foam, is mild and non-irritating, and is suitable for sensitive skin by rationally matching sodium cocoyl glycinate, disodium cocoyl glutamate and betaine-type surfactants without adding fatty acids;

[0031] 2. The preparation method provided by the present invention reduces the cost while ensuring that the prepared facial cleanser has rich foam by reasonably matching the sodium cocoyl glycinate powder and the solution. At the same time, the process disperses the sodium cocoyl glycinate powder in the polyol phase, which is easier to disperse into foam and has better foaming properties, thereby improving production efficiency.

[0032] 3. The facial cleanser prepared by the preparation method provided by the present invention has rich, dense and strong foam, and the paste is well formed, not soft and has better stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solution of the present invention, the following briefly introduces the drawings required for describing the background technology and embodiments.

[0034] Figure 1 This is the effect picture of amino acid cleanser foam without fatty acid;

[0035] Figure 2 This is the foam effect diagram of amino acid cleanser containing fatty acids;

[0036] Figure 3 It is a process flow chart of sodium cocoyl glycinate solution;

[0037] Figure 4The process flow chart of sodium cocoyl glycinate dry powder is as follows;

[0038] Figure 5 This is a diagram showing the foam effect of the amino acid cleanser prepared in Example 5 of the present application. DETAILED DESCRIPTION

[0039] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the present invention. Obviously, the described embodiments are only 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.

[0040] The technical solution of the present invention is further described in detail below in conjunction with specific embodiments. It should be understood that the following embodiments are only used to explain the present invention, and are not used to limit the present invention.

[0041] The raw materials involved in the present invention can all be purchased through commercial channels.

[0042] The process flow of sodium cocoyl glycinate solution is as follows: Figure 3 As shown;

[0043] The process flow of sodium cocoyl glycinate powder is as follows: Figure 4 shown.

[0044] Preparation of Examples and Comparative Examples

[0045] Accurately weigh the raw materials according to the mass percentages in Table 1 and Table 2;

[0046] Step 1, dispersing the cationic conditioning agent and part of the glycerol, stirring and homogenizing with water to obtain a mixture A for later use;

[0047] Step 2, heating and stirring the preservative until it is uniformly dissolved to obtain a mixture B for later use;

[0048] Step 3, taking part of the stabilizer and the remaining glycerin, mixing and stirring, adding the neutralizer dissolved in water after stirring evenly, and then adding the chelating agent, part of the skin conditioning agent, and sodium cocoyl glycinate powder in sequence, stirring and dispersing evenly, to obtain a mixture C;

[0049] Step 4, adding sodium cocoyl glycinate solution, disodium cocoyl glutamate, potassium cocoyl glycinate, and the remaining stabilizer to the mixture C in sequence, stirring and homogenizing at 80-85° C. to uniformly disperse, then adding the mixture A, homogenizing and uniformly dispersing, and then sequentially adding betaine-type surfactant, pearlescent flakes, and citric acid, stirring and homogenizing to uniformly disperse, and keeping warm for 20-30 minutes to obtain a mixture D;

[0050] Step 5, cool the mixture D to 55-58°C, add the mixture B, stir evenly, cool to 43-48°C, keep warm and stir to make the material pearlescent, then add the remaining skin conditioner and essence in turn, stir evenly, cool to 40-43°C, sieve, and obtain a mild multi-foaming amino acid cleanser.

[0051] Table 1 Example Raw Materials Mass Percentage

[0052]

[0053]

[0054] Note: “ / ” in the table means not added.

[0055] Table 2 Comparative Example Raw Materials Mass Percentage

[0056]

[0057]

[0058] Note: “ / ” in the table means not added.

[0059] Comparative Example 1 Compared with Example 5, the sodium cocoyl glycinate powder and solution were replaced by an equal amount of disodium cocoyl glutamate;

[0060] Comparative Example 2 Compared with Example 5, the sodium cocoyl glycinate powder and solution were replaced with an equal amount of betaine-type surfactant;

[0061] Comparative Example 3 Compared with Example 5, disodium cocoyl glutamate was replaced by an equal amount of sodium cocoyl glycinate solution;

[0062] Comparative Example 4 Compared with Example 5, disodium cocoyl glutamate was replaced by an equal amount of betaine type surfactant;

[0063] Comparative Example 5 Compared with Example 5, the betaine-type surfactant was replaced by an equal amount of sodium cocoyl glycinate solution;

[0064] Comparative Example 6 Compared with Example 5, the betaine-type surfactant was replaced by an equal amount of disodium cocoyl glutamate;

[0065] Comparative Example 7 Compared with Example 5, the betaine-type surfactant was replaced by an equal amount of sodium lauroamphoacetate (non-betaine-type surfactant);

[0066] Comparative Example 8 Compared with Example 5, the sodium cocoyl glycinate dry powder was replaced by a sodium cocoyl glycinate solution with an equal concentration of 25wt%;

[0067] Comparative Example 9 Compared with Example 5, the 25wt% sodium cocoyl glycinate solution was replaced by an equal amount of sodium cocoyl glycinate powder.

[0068] Performance Testing

[0069] 1. Foam height test:

[0070] 1.1 Test instrument:

[0071] A) Roche foam instrument;

[0072] B) Thermometer: accuracy ±1℃;

[0073] C) Balance: accuracy 0.1g;

[0074] D) Super constant temperature water bath: accuracy ±1℃;

[0075] E) Graduated cylinder: 100ml;

[0076] F) Beaker: 1000ml.

[0077] 1.2. Reagents: 1500 mg / kg hard water: weigh anhydrous magnesium sulfate (MgSO 4 )3.7g and anhydrous calcium chloride (CaCl 2 )5.0g, fully dissolved in 5000ml distilled water.

[0078] 1.3. Test samples: facial cleansers of Examples 1-6 and Comparative Examples 1-9.

[0079] 1.4. Experimental steps:

[0080] Preheat the super constant temperature water bath to 40±1℃, and keep the Roche foam instrument at a constant temperature of 40±1℃. Weigh 2.5g of sample, add 900mL of distilled water solvent, then add 100ml of 1500mg / kg hard water, and heat to 40±1℃. Stir to dissolve the sample evenly, use a 200ml quantitative funnel to absorb part of the test solution, and rinse along the wall of the foam instrument. Then take the test solution and put it into the bottom of the foam instrument, align it to the standard scale to 50ml, and then use a 200ml quantitative funnel to absorb the test solution, fix the center position of the funnel, put the test solution, and immediately record the foam height. Take the average of the two results within the allowable range as the final result, and keep the integer digit of the result.

[0081] The results are shown in Table 3.

[0082] Table 3 Paste, foam state and foam height test results

[0083]

[0084] Result analysis:

[0085] From the results in Table 3, it can be seen that compared with Comparative Examples 1-9, Examples 1-6 have better paste forming, richer and denser foam. Compared with Comparative Examples 1-8, Examples 1-6 have more reasonable formula design, and the cleansing milk has better forming, is not soft, and has better stability while ensuring richer foam. Compared with Comparative Example 9, Examples 1-6 have more reasonable formula design, better paste forming, the paste is not too hard, the process operation is easier, the cost is more reasonable, and 2-3 times the cost can be saved.

[0086] 2. Trial evaluation:

[0087] The facial cleansers prepared in Examples 1-6 and Comparative Examples 1-9 were evaluated by trial use, mainly in terms of foam richness, foam density (strength), residual feeling after washing, and comfort after washing during use.

[0088] 2.1 Test method:

[0089] 20 volunteers with sensitive skin aged 18-45 were selected as trial subjects, and 15 samples prepared from Examples 1-6 and Comparative Examples 1-9 were distributed to each of them. The subjects had healthy skin and met the inclusion criteria. The testers used the same sample every morning and evening. The 15 samples were used for comparison for 15 days. Before use, the facial skin was wetted with clean water, and an appropriate amount of the product of the present invention was added to the palm of the hand with an appropriate amount of water. After rubbing to form bubbles, the face was gently massaged, and then rinsed with clean water. The foam performance of the product was scored.

[0090] 2.2 Evaluation criteria:

[0091] Fill in the trial form for scoring. The scoring indicators in the trial form include: foam richness, foam density (strength), cleanliness after washing, and comfort after washing. The highest score for each indicator is 10 points, 9-10 points means very satisfied; 8-9 points means relatively satisfied; 6-8 points means acceptable; and below 6 points means unacceptable.

[0092] The average score of the 20 volunteers was recorded.

[0093] The results are shown in Table 4:

[0094] Table 4 Cleansing milk trial evaluation results

[0095]

[0096] Result analysis:

[0097] From the evaluation results in Table 4, it can be seen that compared with Comparative Examples 1-9, the foam of the embodiment has the characteristics of richness, density and strength, indicating that the amino acid cleanser prepared by the present application does not add fatty acids, and the foam of the product prepared by the reasonable combination of sodium cocoyl glycinate dry powder, disodium cocoyl glutamate, sodium cocoyl glycinate solution and betaine type surfactant is rich and dense, and mild and non-irritating, suitable for sensitive skin. Among them, the foam effect of Example 5 is as follows Figure 5 shown.

[0098] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A cleaning composition specially developed for sensitive skin, characterized in that: Calculated by mass percentage, it contains the following ingredients: It also contains water; The concentration of the sodium cocoyl glycinate solution is ≤25wt%.

2. The cleansing composition specially formulated for sensitive skin according to claim 1, characterized in that: The stabilizer is at least one of polyglyceryl-10 laurate and acrylic acid (ester) copolymer.

3. The cleansing composition specially formulated for sensitive skin according to claim 1, characterized in that: The skin conditioning components are acetyltyrosine, acetylcysteine, and alanine; The mass ratio of acetyltyrosine, acetylcysteine ​​and alanine is 3:1:

1.

4. The cleansing composition specially formulated for sensitive skin according to claim 3, characterized in that: The skin conditioning component also includes at least one of 4-tert-butyl cyclohexanol, glycine max seed extract, schisandra chinensis extract, dendrobium officinale stem extract, hydrangea extract, sodium hyaluronate, camellia extract, acetylated sodium hyaluronate, sodium hyaluronate cross-linked polymer, hydrolyzed sodium hyaluronate, β-glucan, and Selaginella extract.

5. The cleansing composition specially formulated for sensitive skin according to claim 1, characterized in that: The betaine-type surfactant is at least one of lauryl hydroxysulfonyl betaine, lauryl hydroxysulfonyl betaine, cocoamidopropyl betaine and cocoyl hydroxysulfonyl betaine.

6. The cleansing composition specially formulated for sensitive skin according to claim 1, characterized in that: It also contains chelating agents, neutralizers, pearlescent flakes, citric acid, preservatives, flavors, and cationic conditioning agents.

7. The cleansing composition specially formulated for sensitive skin according to claim 6, characterized in that: The chelating agent is disodium EDTA.

8. The cleansing composition specially formulated for sensitive skin according to claim 6, characterized in that: The neutralizing agent is at least one of potassium hydroxide and sodium hydroxide.

9. The cleansing composition specially formulated for sensitive skin according to claim 6, characterized in that: The preservative is at least one of p-hydroxyacetophenone, 1,2-hexanediol, caprylhydroxamic acid, lauroyl arginine ethyl ester hydrochloride, caprylyl glycol, ethylhexylglycerin, and glyceryl caprylate; The cationic conditioning agent is at least one of polyquaternium-10, polyquaternium-39, and polyquaternium-6.

10. The method for preparing the cleansing composition specially formulated for sensitive skin according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Disperse the cationic conditioning agent and part of the glycerol and stir with water and homogenize to obtain a uniformly dispersed mixture A for later use; S2. Heat and stir the preservative until it is evenly dissolved to obtain a mixture B for later use; S3. Take part of the stabilizer and the remaining glycerin and mix, stir evenly, add the neutralizer dissolved in water, then add the chelating agent, part of the skin conditioning agent, and sodium cocoyl glycinate powder in turn, stir and disperse evenly to obtain a mixture C; S4. Sodium cocoyl glycinate solution, disodium cocoyl glutamate, potassium cocoyl glycinate, and the remaining stabilizer are added to the mixture C in sequence, and the mixture is stirred and dispersed uniformly at 80-85° C., and then the mixture A is added, and after the mixture is uniformly dispersed, betaine-type surfactant, pearlescent flakes and citric acid are added in sequence, and the mixture is stirred and dispersed uniformly, and the mixture is kept warm for 20-30 minutes to obtain a mixture D; S5. Cool the mixture D to 55-58°C, add the mixture B, stir evenly, cool it to 43-48°C, keep it warm and stir until the material has a pearlescent luster, then add the remaining skin conditioner and fragrance in sequence, stir evenly, cool it to 40-43°C, sieve, and obtain a cleansing composition specially developed for sensitive skin.

Images