CN110538083B

CN110538083B - Mild foam amino acid cleansing cream and preparation method thereof

Info

Publication number: CN110538083B
Application number: CN201910969620.9A
Authority: CN
Inventors: 黄水亮; 彭燕辉
Original assignee: Peng Shi Huizhou Industrial Development Co ltd
Current assignee: Peng Shi Huizhou Industrial Development Co ltd
Priority date: 2019-10-12
Filing date: 2019-10-12
Publication date: 2021-02-26
Anticipated expiration: 2039-10-12
Also published as: CN110538083A

Abstract

The invention discloses a mild foam amino acid facial cleanser, which belongs to the technical field of skin care products and comprises 3-18 parts of amino acid, 0.1-5 parts of potassium hydroxide, 10.0-18.0 parts of glycerol, 0.02-0.2 part of polyethylene glycol, 0.1-0.2 part of methyl hydroxybenzoate, 8.0-20.0 parts of sorbitol, 15-40 parts of water and the like, wherein the amino acid comprises palmitoyl glycine and stearoyl glutamic acid, the mass ratio of the amino acid to the potassium hydroxide is 6-15:1, the preparation process is adjusted by controlling the proportion of the amino acid to the potassium hydroxide, the potassium hydroxide is added for heat preservation, low-speed stirring and heat preservation are carried out in the crystallization process, the crystallization process is ensured to be carried out smoothly, and the finally obtained facial cleanser has a stable system and rich foams and low irritation of products.

Description

Mild foam amino acid cleansing cream and preparation method thereof

Technical Field

The invention belongs to the technical field of skin care products, and particularly relates to a mild foam amino acid cleansing cream and a preparation method thereof.

Background

With the change of environment, the facial skin of people is subjected to more and more serious invasion, most of facial cleansers on the market at present have unreasonable component allocation due to high irritation, and particularly, the development of the mild facial cleanser with strong cleaning capability is needed for more sensitive skin. The conventional amino acid facial cleansing cream has low foam richness, is difficult to stabilize, and has certain irritation.

The Chinese invention patent CN107375007A (a skin care composition, amino acid soap and a preparation method thereof) uses creatine and B vitamins, and the skin care composition and the amino acid soap are prepared by adjusting the proportion of the creatine to the B vitamins and adding nicotinamide, amino acid salt, humectant and the like, are fresh, cool, do not skid, moisten and are not tight during cleaning, and simultaneously have the effects of removing dark skin color, fading acne marks, reducing blackheads and acnes, strengthening moisture retention, increasing skin elasticity and having good after-sun repair effect; however, creatine is a nitrogen-containing organic acid, and can irritate skin and mucous membrane when improperly used on the skin, can generate bad irritation to eyes, is not suitable for sensitive skin, and is not easy to generate foam when the skin care product synthesized by the method is used for cleaning the skin, and further increases the irritation to the skin of a user. Chinese invention patent CN108703893A (a detergent composition and its application) adds N-long chain fatty acyl methyl taurine and/or its salt into N-long chain fatty acyl glycine and/or its salt, and optimizes the proportion of the two to prepare a detergent composition, which not only has fresh and cool feeling, non-sticky and non-dry, but also has transparent appearance under acidic or neutral condition, and can be widely used in cleaning products; however, the lotion composition obtained by this method is not easily foamed, does not clean the skin well, and is highly irritating.

Chinese invention patent CN102058489A (a thick cleaning composition) uses long-chain fatty acyl neutral amino acid ester; fatty compounds of fatty acids, fatty alcohols, fatty alcohol ethers or polyol fatty acid esters; a surfactant; solvents and cosmetic and cleaning adjuvants, etc. make a cleaning composition which has a thick appearance, is easy to apply, quickly bubbled, and has good foam quality when used. Chinese patent CN105997548A (a mild cleansing foam based on amino acid derivative surfactant) uses surfactant, natural moisturizing factor, preservative, water and the like to prepare a cleansing foam, wherein the surfactant comprises amino acid derivative, does not contain small molecular solvent, has mild use effect, can clean skin and relieve the damage of the surfactant to the skin. The Chinese patent CN106753933A (a mild foam facial soap containing amino acid) adopts surfactant, fatty acid, potassium hydroxide, cellulose, EDTA disodium, cationic conditioner, polyalcohol, amino acid humectant and deionized water to prepare the facial soap, has rich and dense foam, small irritation and strong crystallization capacity, and can not cause excessive loss of facial skin moisture while achieving good cleaning effect. By adjusting the proportion of the amino acid, the sodium hydroxide and the surfactant, a transparent, stable and mild product can be obtained. The Chinese invention patent CN109998935A (a clean and moist amino acid facial cleanser and a preparation method thereof) uses water, glycerin, surfactant, sodium cocoyl glycinate, myristic acid, palmitic acid, stearic acid, ethylene glycol distearate, methyl hydroxybenzoate, acrylic acid (ester)/palmitoyl alcohol polyether-25 acrylate copolymer, potassium hydroxide, methyl thiazolinone and essence to prepare the facial cleanser. Although the cleanser and the face cleaning foam prepared by the patents can generate certain foam in the using process, the foam quantity is not rich, and the cleanser and the face cleaning foam can not play a good cleaning role.

Therefore, in response to these disadvantages, we developed a mild amino acid facial cleanser with very rich lather and a stable system.

Disclosure of Invention

The invention aims to solve the technical problems that in the prior art, a facial cleanser product is not rich in foam, and is unstable in system and high in irritation.

In order to solve the technical problems, the invention discloses a mild foaming amino acid cleansing cream which comprises 3-18 parts of amino acid, 0.1-5 parts of potassium hydroxide, 10.0-18.0 parts of glycerol, 0.02-0.2 part of polyethylene glycol, 0.1-0.2 part of methyl hydroxybenzoate, 8.0-20.0 parts of sorbitol, 15-40 parts of water, 6.0-15.0 parts of sodium cocoyl glycinate, 5.0-15.0 parts of disodium lauryl sulfosuccinate, 2.0-6.0 parts of cocamidopropyl betaine, 0.5-12 parts of sodium chloride, 0.2-2 parts of glyceryl stearate, 0.2-2 parts of lauric acid, 0.2-2 parts of ethylene glycol distearate, 0.01-2 parts of nicotinamide, 0.001-0.1 part of sodium hyaluronate, 0.001-0.1 part of papain, 0.005-0.1 part of saccharide isomerate and 0.005-0.1 part of rice fermentation filtrate, 0.2-2 parts of polyethylene glycol distearate, 0.05-0.5 part of essence, 0.01-1.0 part of phenoxyethanol and 0.001-0.1 part of ethylhexyl glycerol.

Furthermore, the addition amount of the cocoyl sodium glycinate in the invention is 6.0-10.0 parts, and in addition, the cleansing cream can also be added with 0.0001-0.01 part of methylisothiazolinone.

In the invention, the polyethylene glycol can be selected from polyethylene glycol-14M which is purchased from Dow chemical and has the model of POLYOX WSR-205, and the polyethylene glycol-14M is an excellent lubricant and thickener, can be synergistically enhanced with other effective components in the facial cleanser, improves the film forming property of the facial cleanser, enables the facial cleanser to have more remarkable foaming property, and does not influence the cleaning effect of the facial cleanser. The polyethylene glycol distearate can be PEG-150 distearate, has proper molecular weight and molecular chain length, can enable a cleansing cream product to have optimal wetting performance, and simultaneously, the PEG-150 distearate is used as an emulsifier and a thickening agent with excellent performance, and can endow the cleansing cream with more excellent appearance and hand feeling. In the invention, sodium chloride is added into the facial cleanser system to adjust the viscosity of the system, so that the critical micelle concentration of the system can be reduced, the refractive index of the system is increased, and the like, and the facial cleanser has more excellent appearance; in addition, sodium chloride also has the effects of diminishing inflammation and sterilizing, so that the finally obtained facial cleanser also has certain anti-inflammation and sterilizing properties, and can prevent infection caused by facial acne and the like. According to the invention, the nicotinamide is also added into the facial cleanser, the nicotinamide has the effects of promoting blood pressure circulation, whitening and the like, and the facial cleanser added with the nicotinamide has stronger functionality and better meets the requirements of the public. The glycerin, the polyethylene glycol, the sorbitol and the like in the facial cleanser have good moisturizing and lubricating effects, and users do not feel tight when using the facial cleanser provided by the invention, so that the moisturizing effect is good. The methylparaben, phenoxyethanol and the like in the invention are preservatives with stable performance, can effectively prevent bacteria in the cleansing cream product from breeding, prevent the product from going bad, prolong the shelf life and improve the stability of the system. The sodium cocoyl glycinate, disodium lauryl sulfosuccinate, cocamidopropyl betaine and the like in the invention are surfactants with excellent performance, have good stability under acidic or alkaline conditions, good foaming performance, strong dirt-removing power and certain thickening performance, and can obviously improve the stability and cleaning capability of the cleansing cream. The glyceryl stearate, the lauric acid, the ethylene glycol distearate, the polyethylene glycol distearate and the like in the invention are good emulsifiers and lubricants, and can ensure that the cleansing cream has stable and mild hand feeling. The essence has special fragrance, so that the cleansing cream has special fragrance, and the experience of users is improved.

Further, the amino acids include palmitoylglycine and stearoylglutamic acid. Wherein the mass percent of palmitoyl glycine in the amino acid is 50-80%, the mass percent of stearoyl glutamic acid is 20-80%, and the content of impurity water in the amino acid cannot exceed 5%. Further, the mass percent of palmitoyl glycine is 60-70%, and the mass percent of stearoyl glutamic acid is 30-40%; still further, the palmitoyl glycine content is 65% by mass and the stearoyl glutamic acid content is 35% by mass. The amino acid facial cleanser has the characteristic of skin-friendly mildness, the facial cleanser adopts two amino acid surfactants of palmitoyl glycine and stearoyl glutamic acid as amino acid sources, and when the proportion of the two amino acids is proper, the hydrophilic and oleophilic performances of a facial cleanser system are optimal, so that the facial cleanser is milder, free of stimulation and excellent in cleaning capability.

Further, the mass ratio of the amino acid to the potassium hydroxide is 6-15:1, and further, the ratio is 9-12: 1; further, the mass ratio of amino acid to potassium hydroxide was selected to be 10.5: 1. Under the optimal proportion, the amino acid in the system can completely generate a neutralization reaction with the potassium hydroxide, the architecture of the system is most stable, the foaming performance of the system can be further enhanced, and richer foams are given to the cleansing cream product; the proportion of palmitoyl glycine to stearoyl glutamic acid in the amino acid is also controlled, under the optimal proportion that the mass percent of palmitoyl glycine is 65% and the mass percent of stearoyl glutamic acid is 35%, the amino acid can better react with potassium hydroxide, the self performance advantages of palmitoyl glycine and stearoyl glutamic acid can be fully exerted, and the system is more stable together. Meanwhile, as the neutralization reaction in the system can be completely carried out, free acid or alkaline compounds do not exist, the irritation is also minimum, and the facial cleansing cream product is milder and has no irritation when in use.

The invention also discloses a preparation method of the facial cleanser, which is characterized by comprising the following steps:

(1) adding glycerol, polyethylene glycol, methyl hydroxybenzoate, sorbitol and amino acid in formula ratio into a reaction kettle, and stirring to obtain solution A;

(2) sequentially adding sodium cocoyl glycinate and cocamidopropyl betaine into the solution A, uniformly stirring, heating, then adding potassium hydroxide, and uniformly stirring to obtain a solution B;

(3) adding disodium lauryl sulfosuccinate and sodium chloride into the solution B in sequence, and stirring uniformly to obtain a solution C;

(4) sequentially adding glyceryl stearate, lauric acid, ethylene glycol distearate, polyethylene glycol distearate and nicotinamide into the solution C, and continuously stirring uniformly to obtain a solution D;

(5) cooling the solution D, and then preserving heat;

(6) continuing cooling the solution D, then adding phenoxyethanol, ethylhexyl glycerol, essence, sodium hyaluronate, papain, saccharide isomerate and rice fermentation product filtrate, and then uniformly stirring to obtain a solution E;

(7) and (4) performing quality inspection on the solution E, discharging after the detection is qualified, and obtaining the cleansing cream product.

Further, the stirring speed in the steps (1) to (7) is 20 to 45 r/min. Furthermore, the stirring speed is 20-25r/min, and the foam generated by stirring can be effectively prevented at a lower stirring speed, so that the smooth operation of the subsequent production process is facilitated.

Further, the temperature of the solution in the step (2) is increased to 85-95 ℃. Further, in the step (2), the temperature of the solution is increased to 93-95 ℃. Further, the potassium hydroxide is added under the incubation condition in the step (2), and other materials cannot be added until the incubation is finished, because the addition of other materials lowers the concentration of potassium hydroxide, resulting in incomplete reaction.

Further, when the temperature of the solution D is reduced to 50-60 ℃ in the step (5), the solution D is continuously stirred to be reduced to 45-50 ℃, and then the solution D is stirred for 20-60 minutes under the condition of heat preservation. Specifically, the mixture can be stirred for 30min under the condition of heat preservation, at the moment, a crystallization process occurs in the system, the crystallization speed can be promoted by low-speed stirring, damage to crystals caused by overhigh stirring speed can be avoided, the heat preservation is carried out at the temperature of 45-50 ℃, the crystallization process can be stabilized, the stability of the system is ensured, and the foamability of the cleansing cream in the using process cannot be influenced.

Compared with the prior art, the mild foam amino acid facial cleanser and the preparation method thereof have the following advantages:

(1) the cleansing cream product is milder and has no stimulation by adjusting the content of different amino acids.

(2) By adjusting the proportion of the amino acid to the potassium hydroxide, the neutralization reaction can be carried out more thoroughly, the system is more stable, and the foam is richer.

(3) The cleansing cream product is stirred at low speed all the time in the preparation process, so that excessive foam can be avoided from being generated in the system, and the reaction can be smoothly and stably carried out.

(4) The low-speed heat preservation is carried out during later-stage production of the facial cleanser product, so that the crystallization process is complete, the appearance and the stability of the facial cleanser can be improved, and a system is endowed with richer foams.

(5) The preparation method of the facial cleanser is simple and easy to implement, and is easy to realize batch production.

Detailed Description

The technical solution of the present invention will be described in detail by the following specific examples.

Example 1

1. Taking 16 parts of glycerol, 0.1 part of polyethylene glycol-14M, 0.2 part of methyl hydroxybenzoate, 10 parts of sorbitol, 6 parts of amino acid (specifically a mixture consisting of 65 wt% of palmitoyl glycine and 35 wt% of stearoyl glutamic acid) and 25 parts of water by mass, and uniformly stirring at a low speed at a stirring speed of 25r/min to obtain a solution A;

2. slowly and sequentially adding 7.5 parts of sodium cocoyl glycinate and 6 parts of cocamidopropyl betaine into the solution A, uniformly stirring at a low speed at a stirring speed of 25r/min, slowly heating to 94 ℃, then keeping the temperature at 94 ℃, adding a potassium hydroxide aqueous solution which is well mixed in advance, dissolving 0.63 part of industrial potassium hydroxide 90% (the content of potassium hydroxide is 90%, and the content of potassium hydroxide is 0.57 part) into 1.09 parts of water to prepare the potassium hydroxide aqueous solution, and continuously stirring at a low speed at a stirring speed of 25r/min for 60min until no particles exist in the solution to obtain a solution B;

3. adding 13 parts of disodium lauryl sulfosuccinate and 1 part of sodium chloride into the solution B in sequence, and continuously stirring at a low speed of 25r/min until no particulate matters exist in the solution, thus obtaining a solution C;

4. sequentially adding 1 part of glyceryl stearate, 1.5 parts of lauric acid, 1 part of ethylene glycol distearate, 0.5 part of PEG-150 distearate and 0.5 part of nicotinamide into the solution C, and continuously stirring at a low speed of 25r/min until no particles exist in the solution, thereby obtaining a solution D;

5. cooling the solution D to 55 ℃ under natural conditions, stirring at a low speed of 25r/min for 30min to reduce the temperature to 50 ℃, and then stirring at a low speed of 25r/min for 30min under heat preservation conditions;

6. continuing to naturally cool the solution D to 44 ℃ at the rotating speed of 25r/min, and then adding 0.05 part of phenoxyethanol, 0.005 part of ethylhexyl glycerol, 0.1 part of essence, 0.005 part of sodium hyaluronate, 0.005 part of papain, 0.1 part of sugar isomer and 0.1 part of rice fermentation product filtrate (the process is carried out before the solution D is pasted); and continuously stirring at a low speed of 25r/min until all the raw materials are uniformly mixed to obtain a solution E.

7. And (5) performing quality inspection on the solution E, discharging after the detection is qualified, and obtaining a facial cleanser product which is recorded as S1.

The mass ratio of amino acids to potassium hydroxide in this example 1 was 10.5: 1.

Example 2

1. Taking 16 parts of glycerol, 0.1 part of polyethylene glycol-14M, 0.2 part of methyl hydroxybenzoate, 10 parts of sorbitol, 6 parts of amino acid (specifically a mixture consisting of 50 wt% of palmitoyl glycine and 50 wt% of stearoyl glutamic acid) and 25 parts of water by mass, and uniformly stirring at a low speed at a stirring speed of 25r/min to obtain a solution A;

7. And (5) performing quality inspection on the solution E, discharging after the detection is qualified, and obtaining a facial cleanser product which is recorded as S2.

The mass ratio of amino acid to potassium hydroxide in this example was 10.5: 1.

Example 3

2. slowly and sequentially adding 7.5 parts of sodium cocoyl glycinate and 6 parts of cocamidopropyl betaine into the solution A, uniformly stirring at a low speed at a stirring speed of 25r/min, slowly heating to 94 ℃, then keeping the temperature at 94 ℃, adding a potassium hydroxide aqueous solution which is well mixed in advance, dissolving 0.96 part of industrial potassium hydroxide 90% (the content of potassium hydroxide is 90%, and the content of potassium hydroxide is 0.86 part) into 1.09 parts of water to prepare the potassium hydroxide aqueous solution, and continuously stirring at a low speed at a stirring speed of 25r/min for 60min until no particles exist in the solution to obtain a solution B;

7. And (5) performing quality inspection on the solution E, discharging after the detection is qualified, and obtaining a facial cleanser product which is recorded as S3.

The mass ratio of amino acid to potassium hydroxide in this example was 7: 1.

Example 4

2. slowly and sequentially adding 7.5 parts of sodium cocoyl glycinate and 6 parts of cocamidopropyl betaine into the solution A, uniformly stirring at a low speed at a stirring speed of 40r/min, slowly heating to 88 ℃, then keeping the temperature at 88 ℃, adding a potassium hydroxide aqueous solution which is well mixed in advance, dissolving 0.63 part of industrial potassium hydroxide 90% (the content of potassium hydroxide is 90%, and the content of potassium hydroxide is 0.57 part) into 1.09 parts of water to prepare the potassium hydroxide aqueous solution, and continuously stirring at a low speed at a stirring speed of 40r/min for 60min until no particles exist in the solution to obtain a solution B;

7. And (5) performing quality inspection on the solution E, discharging after the detection is qualified, and obtaining a facial cleanser product which is recorded as S4.

Example 5

5. cooling the solution D to 55 ℃ under natural conditions, stirring for 30min at 40r/min to reduce the temperature to 50 ℃, and then stirring at a low speed of 40r/min for 5min under heat preservation conditions;

7. And (5) performing quality inspection on the solution E, discharging after the detection is qualified, and obtaining a facial cleanser product which is recorded as S5.

Example 6

7. And (5) performing quality inspection on the solution E, discharging after the detection is qualified, and obtaining a facial cleanser product which is recorded as S6.

Comparative example 1

1. Taking 16 parts of glycerol, 0.1 part of polyethylene glycol-14M, 0.2 part of methylparaben, 10 parts of sorbitol, 6 parts of palmitoyl glycine and 25 parts of water by mass parts, and uniformly stirring at a low speed at a stirring speed of 25r/min to obtain a solution A;

2. slowly and sequentially adding 7.5 parts of sodium cocoyl glycinate and 6 parts of cocamidopropyl betaine into the solution A, uniformly stirring at a low speed at a stirring speed of 80r/min, slowly heating to 70 ℃, then keeping the temperature at 70 ℃, adding a potassium hydroxide aqueous solution which is well mixed in advance, dissolving 0.63 part of industrial potassium hydroxide 90% (the content of potassium hydroxide is 90%, and the content of potassium hydroxide is 0.57 part) into 1.09 parts of water to prepare the potassium hydroxide aqueous solution, and continuously stirring for 60min at a stirring speed of 80r/min until no particles exist in the solution to obtain a solution B;

3. adding 13 parts of disodium lauryl sulfosuccinate and 1 part of sodium chloride into the solution B in sequence, and stirring at a low speed of 25r/min until no particulate matters exist in the solution to obtain a solution C;

4. sequentially adding 1 part of glyceryl stearate, 1.5 parts of lauric acid, 1 part of ethylene glycol distearate, 0.5 part of PEG-150 distearate and 0.5 part of nicotinamide into the solution C, and stirring at a low speed of 25r/min until no particles exist in the solution to obtain a solution D;

5. cooling the solution D to 55 ℃ under natural conditions, stirring at a low speed of 80r/min for 30min to reduce the temperature to 50 ℃, and then continuing stirring at a rotating speed of 80 r/min;

7. And (5) performing quality inspection on the solution E, discharging after the detection is qualified, and obtaining a facial cleanser product, which is recorded as B1.

The mass ratio of amino acid to potassium hydroxide in this comparative example was 10.5: 1.

Comparative example 2

Taking 16 parts of glycerol, 0.1 part of polyethylene glycol-14M, 0.2 part of methylparaben, 10 sorbitol, 6 parts of amino acid (specifically stearyl glutamic acid), 25 parts of water, 7.5 parts of sodium cocoyl glycinate, 6 parts of cocamidopropyl betaine, 1.3 parts of industrial potassium hydroxide 90% (the content of potassium hydroxide is 90%, the content of potassium hydroxide is 1.2 parts), 13 parts of disodium lauryl sulfosuccinate, 1 part of sodium chloride, 1 part of glyceryl stearate, 1.5 parts of lauric acid, 1 part of ethylene glycol distearate, 0.5 part of PEG-150 distearate, 0.5 part of nicotinamide, 0.05 part of phenoxyethanol, 0.005 part of ethylhexyl glycerol, 0.1 part of essence, 0.005 part of sodium hyaluronate, 0.005 part of papain, 0.1 part of saccharide isomerate and 0.1 part of rice fermentation product filtrate; then heating to 94 ℃, stirring at the speed of 80r/min, stirring uniformly, naturally cooling to room temperature, and discharging, wherein the mark is B2.

The mass ratio of amino acid to potassium hydroxide in this comparative example was 5: 1.

The above examples 1 to 5 and comparative examples 1 to 2 are different in the mass ratio of the amino acid to potassium hydroxide and in the partial operation process, and are specifically shown in the following table 1.

TABLE 1 amount of partial raw materials and partial process parameters in examples and comparative examples

In order to demonstrate the performance of the cleansing cream obtained by the present invention, the cleansing cream products in the above examples and comparative examples were subjected to a performance test:

1. bubble height test: bubble height was measured using a roche foam meter.

2. And (3) irritation test: selecting 50 trained volunteers including 10 sensitive skin patients, continuously using the facial cleansers obtained from the facial cleanser products S1-S6 and B1-B2 for 1 month, respectively using the facial cleansers in the morning and the evening according to the usual use habit, then scoring and feeding back the use results, scoring according to the irritation of the facial cleansers, wherein the higher the score is, the milder the facial cleanser is, the non-irritant is, and the full score is 10, and then taking the average value of the scores of all the volunteers to evaluate the irritation of the facial cleansers.

3. And (3) stability testing: sampling different face cleaning creams, respectively, storing at 50 deg.C, -15 deg.C, 5 deg.C for 3 months, and observing whether the face cleaning creams have layering, discoloration or thinning phenomena.

The results of the above performance tests are shown in table 2 below.

TABLE 2 Performance test results for cleansing cream products S1-S6 and B1-B2

In addition, in order to prove that the cleansing cream obtained by the present invention has abundant foam, several cleansing products are commercially available, and the foaming degree test is performed, and the test results are as follows in table 3:

table 3 lather height test results for facial cleanser product S1 and a commercial facial cleanser product

As can be seen from the above Table 2, the cleansing cream products S1-S6 obtained by the amino acid types and the proportion of the amino acids and the preparation method have richer foams, lower irritation and better stability compared with the comparative products B1-B2. The cleansing cream prepared by the technical scheme of the invention has more excellent performance.

For S1, the content of palmitoyl glycine in amino acid is 65%, the content of stearoyl glutamic acid is 35%, the mass ratio of the amino acid to potassium hydroxide is 10.5:1, and the temperature, the stirring speed and the heat preservation time are strictly controlled in step 2 and step 5 of the preparation process of the cleansing cream, and the raw material composition and the preparation method of the cleansing cream are most preferable, so that the finally prepared cleansing cream has the most abundant foams, the lowest irritation and the best stability. Compared with S1, S2 changes the proportion of palmitoyl glycine and stearoyl glutamic acid in amino acid, S3 changes the mass ratio of the amino acid to potassium hydroxide, S4 changes the temperature rise temperature and the stirring speed in step 2, S5 changes the stirring speed and the heat preservation time in step 5, and S6 changes the temperature rise temperature, the stirring speed and the heat preservation time in step 2 and step 5 simultaneously, so that the cleansing cream is not prepared according to the optimal raw material composition and preparation method, the foaming degree is high, the irritation and the stability are slightly poor compared with S1, and therefore, the raw material composition, the preparation process and the like in the preparation process of the cleansing cream influence the performance of the cleansing cream together, and any variable of the variables can influence the performance of the cleansing cream.

Compared with products B1 and B2 in a comparative example, only palmitoyl glycine is added into B1, only stearoyl glutamic acid is added into B2, the mass ratio of amino acid to potassium hydroxide is lower, the preparation methods of the two groups of products are different from those provided by the invention, the foam height of the finally obtained cleansing cream product is obviously lower than that of the cleansing cream products S1-S6 in the examples, the irritation is stronger, and the phenomenon of thinning or thickening occurs when a stability test is carried out at the high temperature of 50 ℃ and the low temperature of 15 ℃, which indicates that the stability is poorer.

The best embodiment product S1 of the invention is simultaneously tested with several commercially available facial cleansing products for foaming degree, and the test results are shown in Table 3, and the facial cleanser product S1 of the invention is found to have higher foaming degree than all the commercially available products, which shows that the facial cleanser product S1 obtained by the invention has richer foaming.

Therefore, the amino acid cleansing cream product with rich foam, small irritation and stronger stability is obtained by adjusting the ratio of the two amino acids, controlling the mass ratio of the amino acid to the potassium hydroxide, controlling the stirring speed, the temperature, the heat preservation time and the like in the preparation process.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, so any modifications, equivalents, improvements and the like made within the spirit of the present invention should be included in the scope of the present invention.

Claims

1. The mild foam amino acid facial cleanser is characterized by comprising the following components in parts by mass: 3-18 parts of amino acid, 0.1-5 parts of potassium hydroxide, 10.0-18.0 parts of glycerol, 0.02-0.2 part of polyethylene glycol, 0.1-0.2 part of methylparaben, 8.0-20.0 parts of sorbitol, 15-40 parts of water, 6.0-15.0 parts of sodium cocoyl glycinate, 5.0-15.0 parts of disodium lauryl sulfosuccinate, 2.0-6.0 parts of cocamidopropyl betaine, 0.5-12 parts of sodium chloride, 0.2-2 parts of glycerol stearate, 0.2-2 parts of lauric acid, 0.2-2 parts of ethylene glycol distearate, 0.01-2 parts of nicotinamide, 0.001-0.1 part of sodium hyaluronate, 0.001-0.1 part of papain, 0.005-0.1 part of saccharide isomer, 0.005-0.1 part of rice fermentation product, 0.2-2 parts of polyethylene glycol distearate, 0.05-0.05 part of phenoxy essence, 0.01-0.1 part of ethanol, 0.001-0.1 part of ethylhexyl glycerol;

the amino acid is a mixture consisting of 65 wt% of palmitoyl glycine and 35 wt% of stearoyl glutamic acid; the mass ratio of the amino acid to the potassium hydroxide is 6-15: 1;

the preparation method of the facial cleansing cream comprises the following steps:

(1) adding glycerol, polyethylene glycol, methyl hydroxybenzoate, sorbitol, amino acid and water in formula ratio into a reaction kettle, and stirring to obtain solution A;

(5) cooling the solution D, and then preserving heat;

(7) performing quality inspection on the solution E, discharging after the detection is qualified, and obtaining a cleansing cream product;

the stirring speed in the steps (1) to (7) is 20 to 45 r/min; heating the solution to 85-95 ℃ in the step (2); when the temperature of the solution D is reduced to 50-60 ℃ in the step (5), continuously stirring to reduce the temperature to 45-50 ℃, and then keeping the temperature and stirring for 20-60 minutes; and (3) adding potassium hydroxide under the condition of heat preservation in the step (2).

2. The cleansing cream as claimed in claim 1, wherein: in the step (2), the temperature of the solution is raised to 93-95 ℃.