Whitening shower gel and preparation method thereof

Abstract

The invention relates to the technical field of cosmetics, in particular to whitening shower gel and a preparation method thereof. The invention discloses a whitening shower gel which comprises the following raw materials in percentage by weight: 0.01-0.03% of a humectant, 2-4% of a whitening agent, 2-3.5% of a skin conditioner, 16-17.5% of a surfactant, 0.1-0.2% of a chelating agent, 0.1-0.3% of a pH regulator and the balance of a solvent. The natural lipid structure of the skin is simulated through scientific proportion of ceramide combination, the barrier is strengthened, and the dry and tight feeling of the cleaned skin is reduced. Meanwhile, the plant extract can provide instant water replenishing, external stimulation relieving, sensitive risk reducing and ceramide water locking, and a'water replenishing, water locking and repairing 'triple moisturizing system is formed.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of cosmetic technology, in particular to a whitening shower gel and a preparation method thereof. BACKGROUND

[0002] With the continuous improvement of people's living standards, the requirements for personal care products are increasingly stringent. As a daily essential for skin cleaning, the efficacy and safety of shower gel are increasingly concerned. Traditional shower gel often focuses on cleaning ability in formula design, and uses surfactant system to achieve the purpose of decontamination. However, excessive cleaning can easily damage the skin barrier function, leading to skin moisture loss, dryness and tightness, and even cause skin allergy and other adverse reactions. The skin barrier function mainly depends on the lipid components in the stratum corneum, among which ceramide is one of the key lipids for maintaining the integrity of the skin barrier. Many existing shower gel products lack effective supplementation and reasonable use of ceramide, which cannot repair and strengthen the skin barrier while cleaning.

[0003] In the application of plant extracts in shower products, although some shower gels have added plant ingredients to enhance skin care efficacy, there are many deficiencies in ingredient selection. In summary, it is of great practical significance and market demand to develop a shower gel that can efficiently clean the skin, supplement the required ceramide of the skin, strengthen the skin barrier, and fully utilize the advantages of various plant extracts to achieve multiple skin care effects such as soothing, anti-inflammatory and antioxidant. The present application aims to fill this market gap and provide consumers with a more high-quality and comprehensive skin care shower product SUMMARY

[0004] The present application provides a whitening shower gel, by weight percentage, the raw materials include 0.01-0.03% of moisturizing agent, 2-4% of whitening agent, 2-3.5% of skin conditioner, 16-17.5% of surfactant, 0.1-0.2% of chelating agent, 0.1-0.3% of pH regulator, and the balance of solvent to 100%.

[0005] Preferably, by weight percentage, the raw materials include 0.021% of moisturizing agent, 3.01% of whitening agent, 2.9-3.1% of skin conditioner, 16-17% of surfactant, 0.1-0.12% of chelating agent, 0.1-0.2% of pH regulator, and the balance of solvent to 100%.

[0006] The moisturizing agent includes squalane and sodium hyaluronate; the weight ratio of squalane and sodium hyaluronate is 1.1:1.

[0007] The whitening agent includes niacinamide, phenylethyl resorcinol and silica; the total weight of phenylethyl resorcinol and silica accounts for 0.33% of the whitening agent.

[0008] The skin conditioning agent includes an acrylate copolymer, betaine, a Schizochytrium limulus ferment filtrate, a plant extract, a pearl extract, hydrogenated lecithin, polyglyceryl-10 stearate, and a ceramide. The weight ratio of the acrylate copolymer, betaine, Schizochytrium limulus ferment filtrate, plant extract, pearl extract, hydrogenated lecithin, polyglyceryl-10 stearate, and ceramide is 6:7-8:1.5-2.1:2-2.5:0.001:0.0025:0.0025:0.001-0.01.

[0010] Preferably, the skin conditioning agent includes an acrylate copolymer, betaine, sodium chloride, a Schizochytrium limulus ferment filtrate, a plant extract, a pearl extract, hydrogenated lecithin, polyglyceryl-10 stearate, and a ceramide.

[0011] The weight ratio of the acrylate copolymer, betaine, sodium chloride, Schizochytrium limulus ferment filtrate, plant extract, pearl extract, hydrogenated lecithin, polyglyceryl-10 stearate, and ceramide is 6:7-8:11-12:1.5-2.1:2-2.5:0.001:0.0025:0.0025:0.001-0.01.

[0012] Preferably, the weight ratio of the acrylate copolymer, betaine, sodium chloride, Schizochytrium limulus ferment filtrate, plant extract, pearl extract, hydrogenated lecithin, polyglyceryl-10 stearate, and ceramide is 6:7.92:11.6:1.986:2-2.5:0.001:0.0025:0.0025:0.001-0.01.

[0013] The plant extract includes Damask rose (Rosadamascena) flower water, Tokyo cherry (Prunus yedoensis) leaf extract, and gentian (Gentiana scabra) root extract; and the weight ratio of the Damask rose (Rosadamascena) flower water, Tokyo cherry (Prunus yedoensis) leaf extract, and gentian (Gentiana scabra) root extract is 1.9-2.0:0.035:0.01.

[0014] The Damask rose flower water (commonly known as Damask rose hydrolat) is rich in natural aromatic molecules, vitamin C and polyphenols, and has the effects of soothing the skin, moisturizing, and balancing the skin pH. Its mild properties are suitable for sensitive skin, and it can also bring a natural rose fragrance to enhance the user experience. The cherry blossom leaf extract is rich in flavonoids and antioxidant ingredients (such as quercetin), which can inhibit free radicals and delay skin oxidation, while also having a slight astringent and anti-inflammatory effect to help improve skin dullness. The gentian root contains active ingredients such as gentiopicroside, has antibacterial and anti-irritation properties, can help relieve skin sensitivity problems, and enhance skin barrier function, making it suitable for redness-prone or inflammatory skin.

[0015] The ceramides include ceramide NP, ceramide AP, and ceramide EOP. The weight ratio of ceramide NP, ceramide AP, and ceramide EOP is 3.5:1:0.5. The specific ratio of ceramide NP, ceramide AP, and ceramide EOP in the present application can enhance the intercellular lipid structure of the epidermis, repair the barrier, reduce water loss, and improve dryness and roughness. At the same time, it closely combines with the natural lipid layer of the skin, promotes the adhesion of the stratum corneum cells, enhances skin elasticity, and helps alleviate sensitive problems caused by barrier damage. Ceramide EOP contains long-chain fatty acids that deeply penetrate the stratum corneum, enhance the durability of moisturization, and regulate sebum secretion, making it suitable for dry or oily-dry skin.

[0016] The surfactants include zwitterionic surfactants, nonionic surfactants, and anionic surfactants. The weight ratio of zwitterionic surfactants, nonionic surfactants, and anionic surfactants is 1-3:1-2:13-14.

[0017] The zwitterionic surfactant is cocamidopropyl betaine.

[0018] The nonionic surfactants are cocamide MEA and methyl cocoyl.

[0019] The anionic surfactants include sodium laureth sulfate, sodium C12-14 olefin sulfonate, sodium lauroyl methyl amino acid, sodium lauroyl glutamate, ammonium lauryl sulfate, and sodium lauroyl oat amino acid. Among them, the weight of sodium laureth sulfate accounts for 9.1% of the shower gel, the weight of ammonium lauryl sulfate accounts for 2.1% of the shower gel, and the weight of sodium C12-14 olefin sulfonate accounts for 1.4% of the shower gel.

[0020] The chelating agents include EDTA tetrasodium and EDTA disodium, and the weight ratio of EDTA tetrasodium to EDTA disodium is 0.005:1.

[0021] The pH adjuster includes citric acid and sodium hydroxide.

[0022] The solvent includes water, 1,2-hexanediol, ethylhexylglycerin, butylene glycol, caprylyl glycol and glycerin.

[0023] The raw materials also include, by weight percentage, preservative 0.5-1% and fragrance 0.5-1.2%.

[0024] The preservative includes sodium benzoate, phenoxyethanol and p-hydroxyacetophenone.

[0025] The fragrance can be selected from daily use fragrances.

[0026] The second aspect of the present application provides a preparation method of the whitening shower gel, which comprises uniformly mixing moisturizing agent, whitening agent, skin conditioning agent, surfactant, chelating agent, pH regulator and solvent to obtain the whitening shower gel.

[0027] Preferably, the preparation method of the whitening shower gel comprises the following steps:

[0028] S1. Water, sodium laureth sulfate, ammonium lauryl sulfate, sodium benzoate, citric acid and disodium EDTA are sequentially added into a kettle for heating and stirring to completely dissolve the materials, the temperature is 80-85℃, then sodium cocamidopropyl betaine, sodium C12-14 olefin sulfonate, sodium lauroyl methyl amino acid, sodium lauroyl glutamate, cocamide MEA, methyl cocoyl, squalane and sodium chloride are sequentially added for uniform stirring, the temperature is 75-80℃, the materials are completely dissolved to be transparent, and then the temperature is decreased;

[0029] S2. The temperature is decreased to 50-55℃, nicotinamide, betaine and sodium hyaluronate are sequentially added for complete dissolution, the temperature is continuously decreased to 40℃, then filtrate of schizochytrium sp. fermentate, 1,2-hexanediol, p-hydroxyacetophenone, rose damascena flower water, sodium lauroyl oat amino acid, phenoxyethanol, ethylhexylglycerin, tetrasodium EDTA, butylene glycol, caprylyl glycol, pearl extract, prunus yedoensis leaf extract, benzene ethyl resorcinol, silica, gentiana scabra root extract, glycerin, hydrogenated lecithin, polyglyceryl-10 stearate, ceramide NP, ceramide AP and ceramide EOP are sequentially added for uniform stirring, and then the materials are left to stand for defoaming;

[0030] S3. After the materials are completely defoamed, acrylic acid (ester) copolymer is added into the kettle for uniform stirring, and then sodium hydroxide is added for uniform stirring;

[0031] S4. Fragrance is added at 35℃ for uniform stirring to obtain the product.

[0032] Beneficial effects

[0033] The application simulates the natural lipid structure of the skin by scientifically matching the ceramide combination (NP / AP / EOP), strengthens the barrier, and reduces the dry and tight feeling of the skin after cleaning. At the same time, the rose damascene flower water, the prunus yedoensis leaf extract, and the gentiana scabra root extract can provide instant moisturizing, relieve external irritation, reduce the risk of sensitivity, ceramide water locking, and form a triple moisturizing system of "moisturizing + water locking + repair". Moreover, the shower gel has strong cleaning ability and rich foam under the cooperation of surfactants; the system has strong pH tolerance, avoids electrolyte interference with surfactant micelles, prevents low-temperature crystallization or high-temperature thinning of the shower gel. Embodiment

[0034] Example 1

[0035] A whitening shower gel, and the specific matching is as follows:

[0036]

[0037]

[0038]

[0039] The preparation method of the whitening shower gel comprises the following steps:

[0040] S1. Water, sodium laureth sulfate, ammonium lauryl sulfate, sodium benzoate, citric acid, and disodium EDTA were sequentially added to the kettle and heated and stirred to completely dissolve the materials, the temperature was 80-85℃, then C12-14 olefin sulfonate, sodium lauroyl methyl amino acid, sodium lauroyl glutamate, cocamide MEA, methyl cocoyl, squalane, and sodium chloride were sequentially added and stirred uniformly at 75-80℃ for 20 minutes to completely dissolve the materials to transparency, and then the temperature was lowered;

[0041] S2. The temperature was lowered to 50-55℃, and nicotinamide, betaine, and sodium hyaluronate were sequentially added and stirred to completely dissolve, the temperature was continuously lowered to 40℃, and then the filtrate of schizochytrium ferment, 1,2-hexanediol, p-hydroxyacetophenone, rose damascene flower water, sodium lauroyl oat amino acid, phenoxyethanol, ethylhexylglycerin, tetrasodium EDTA, butylene glycol, caprylyl glycol, pearl extract, prunus yedoensis leaf extract, benzyl resorcinol, silica, gentiana scabra root extract, glycerin, hydrogenated lecithin, polyglyceryl-10 stearate, ceramide NP, ceramide AP, and ceramide EOP were sequentially added and stirred uniformly, and then the mixture was left to stand and defoamed;

[0042] S3. After the material defoaming, add acrylic (ester) copolymer into the kettle and continue to stir until uniform, then add sodium hydroxide and stir until uniform;

[0043] S4. Add fragrance at 35°C and stir until uniform.

[0044] Example 2

[0045] A whitening shower gel, the specific ratio is as follows:

[0046]

[0047]

[0048] The specific preparation method is the same as example 1.

[0049] Example 3

[0050] A whitening shower gel, the specific ratio is as follows:

[0051]

[0052]

[0053]

[0054] The specific preparation method is the same as example 1.

[0055] Example 4

[0056] A whitening shower gel, the specific ratio is as follows:

[0057]

[0058]

[0059]

[0060] The specific preparation method is the same as example 1.

[0061] Example 5

[0062] A whitening shower gel, the specific ratio is as follows:

[0063]

[0064]

[0065] The specific preparation method is the same as example 1.

[0066] Example 6

[0067] A whitening shower gel, the specific ratio is as follows:

[0068]

[0069]

[0070] Specific preparation method is the same as Example 1.

[0071] Performance test and data (1) human skin patch test Test substance: shower gel of Examples 1-6

[0072] Control group: blank control subjects: a total of 30 people, 3 men and 27 women, aged 20-57, with an average age of 24.8±6.8.

[0073] Test method: using the closed patch test method, about 0.020-0.025 mL of test substance was placed in the patch tester, and a low-sensitizing adhesive tape was applied to the back of the test subject. After 24 hours, the test substance was removed, and skin reactions were observed at 0.5, 24, and 48 hours after removal, respectively. The results were recorded according to the skin reaction grading standard in the "Cosmetic Safety Technical Specification" (2015 edition).

[0074] Test results are shown in the table below

[0075]

[0076]

[0077] (2) Human use test

[0078] Test substance: shower gel of Example 1

[0079] Control group: blank control

[0080] Subjects: a total of 30 people, 22 men and 8 women, aged 19-53, with an average age of 33.2±11.1.

[0081] Test method: according to the use characteristics and methods indicated on the label of the cosmetic product, the test subjects directly used the test product, observed once a week, and recorded the results according to the skin adverse reaction grading standard in the "Cosmetic Safety Technical Specification" (2015 edition) human use test. The test duration was not less than 4 weeks.

[0082] Test results are shown in the table below

[0083]

[0084] (3) Human open use whitening efficacy test

[0085] Subjects: 93 valid subjects completed the test, 31 in Example 1, 31 in Example 2, and 31 in Example 3. There were 44 males and 49 females, aged 21-57 years, with an average age of 38.4±10.4 years.

[0086] Instrument and equipment:

[0087] Skin chroma meter: multifunctional skin tester (LAB probe), with performance indicators meeting the requirements of the detection specification.

[0088] Skin melanin detector: multifunctional skin tester (MI probe), with performance indicators meeting the requirements of the detection specification.

[0089] Standard image shooting device: facial image analyzer 7th generation (VISIA7.0), with performance indicators meeting the requirements of the detection specification.

[0090] Test method: according to the product usage instructions, use correctly for 8 weeks, and visit before use (baseline value) and 2 weeks, 4 weeks, and 8 weeks after use, respectively. Each visit includes visual assessment, instrument testing, and standard image shooting. Statistical method: statistical analysis software is used for statistical analysis of data, and the data is expressed as: mean ± standard value, and normal distribution test is performed. If it meets the requirements of normal distribution, paired t test is used for self comparison, otherwise two related sample rank sum test is used. The statistical analysis is a two-tailed test, and the significance level is α=0.05.

[0091] Data analysis

[0092] Significance analysis of different time points before and after application in Example 1

[0093]

[0094] Significance analysis of different time points before and after application in Example 2

[0095]

[0096]

[0097] Significance analysis of different time points before and after application in Example 3

[0098]

[0099] (4) Stability: divide the shower gel into two parts, one at -20℃ and the other at 40℃. After 24 hours, take them out and place them at room temperature. Observe whether they are stable. The results are shown in the table below.

[0100] Shower gel -20℃ 40℃ Example 1 stable, no delamination stable, no delamination Example 2 slight delamination slight delamination Example 3 slight delamination slight delamination Example 4 delamination delamination Example 5 delamination delamination Example 6 delamination delamination

[0101] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A whitening body wash, characterized by, The raw materials include, by weight percentage, 0.01-0.03% of the moisturizing agent, 2-4% of the whitening agent, 2-3.5% of the skin conditioning agent, 16-17.5% of the surfactant, 0.1-0.2% of the chelating agent, 0.1-0.3% of the pH adjusting agent, and the rest of the solvent to make up 100%.

2. The whitening body wash according to claim 1, wherein The raw materials include, by weight percentage, 0.021% of the moisturizing agent, 3.01% of the whitening agent, 2.9-3.1% of the skin conditioning agent, 16-17% of the surfactant, 0.1-0.12% of the chelating agent, 0.1-0.2% of the pH adjusting agent, and the rest of the solvent to make up 100%.

3. The whitening body wash according to claim 1, wherein the body wash is a liquid body wash. The moisturizing agent includes squalane and sodium hyaluronate.

4. The whitening body wash according to claim 1, wherein the body wash is a liquid body wash. The whitening agent includes niacinamide and phenylethyl resorcinol.

5. The whitening body wash according to claim 1, wherein the body wash is in the form of a gel. The skin conditioning agent includes acrylic acid ester copolymer, betaine, Schizochytrium limacinum ferment filtrate, plant extract, pearl extract, hydrogenated lecithin, polyglyceryl-10 stearate, and ceramide.

6. The whitening body wash according to claim 5, wherein the total amount of the at least one surfactant is 1.0% to 10.0% by mass. The weight ratio of the acrylic acid ester copolymer, betaine, Schizochytrium limacinum ferment filtrate, plant extract, pearl extract, hydrogenated lecithin, polyglyceryl-10 stearate, and ceramide is 6:7-8:1.5-2.1:2-2.5:0.001:0.0025:0.0025:0.001-0.

01.

7. The whitening body wash according to claim 6, wherein the body wash is a liquid body wash. The ceramide includes ceramide NP, ceramide AP, and ceramide EOP.

8. The whitening body wash according to claim 1, wherein The surfactant includes zwitterionic surfactant, nonionic surfactant, and anionic surfactant; the weight ratio of the zwitterionic surfactant, nonionic surfactant, and anionic surfactant is 1-3:1-2:13-14.

9. The whitening body wash according to claim 8, wherein the body wash is a liquid body wash. The zwitterionic surfactant is cocamidopropyl betaine.

10. A method of preparing the whitening body wash according to any one of claims 1 to 9, characterized in that, The moisturizing agent, whitening agent, skin conditioning agent, surfactant, chelating agent, pH adjusting agent, and solvent are mixed uniformly to obtain the whitening shower gel. The moisturizing agent, whitening agent, skin conditioning agent, surfactant, chelating agent, pH adjusting agent, and solvent are mixed uniformly to obtain the whitening shower gel.

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