A child body cleansing composition and a method of making the same

Abstract

This invention relates to the field of cosmetic technology, specifically to a children's body cleansing composition and its preparation method. It comprises phase A, phase B, and phase C. Phase A includes alkyl polysaccharide glycosides and polyglycerol fatty acid esters; phase B includes polyols, amphoteric surfactants, glyceryl ester-type nonionic emulsifiers, alkyl polysaccharide glycosides, trehalose, preservatives, and water; phase C includes panthenol, plant extracts, oils, and a pH adjuster. The amphoteric surfactants of this invention include sodium cocoamphoacetate and sodium lauroylamphoacetate, which can significantly reduce the skin irritation of cleansing products while providing highly effective cleansing. The prepared cleansing composition is suitable for children's skin, combining gentle cleansing, long-lasting moisturizing, soothing repair, and sunscreen removal functions.

Description

Technical Field

[0001] This invention relates to the field of cosmetic technology, specifically to a children's body cleaning composition and its preparation method. Background Technology

[0002] Children's skin has a stratum corneum that is only 1 / 3 to 1 / 2 the thickness of an adult's, resulting in significantly lower levels of natural moisturizing factor (NMF) and higher transepidermal water loss (TEWL). This places stringent demands on the gentleness and moisturizing properties of cleansing products. Traditional children's cleansing products often rely on strong, irritating surfactants such as sodium lauryl sulfate (SLS). While these can remove sebum and sweat, they can easily damage the skin's lipid barrier, inducing dryness, erythema, and other sensitivity issues. With technological advancements, gentle surfactant formulations have become a research hotspot. Developing children's cleansing compositions that combine low-irritation cleansing, high-efficiency sunscreen removal, and long-lasting moisturizing has become a pressing technical challenge for the industry.

[0003] Current technology still has significant limitations: On the one hand, sunscreen products generally add polysiloxane film-forming agents and high-melting-point oils to improve their waterproof and sweat-proof performance, forming a stubborn hydrophobic film. Ordinary cleaning compositions have a low removal rate for this type of sunscreen residue, and long-term residue can induce contact dermatitis. On the other hand, although Chinese invention patent application CN114848525A improves the comfort of cleaning by using cocoyl hydrolyzed wheat protein sodium, its moisturizing system relies on a single plant protein ingredient, and the actual measured moisturizing effect is less than 2 hours, which cannot meet the long-term moisturizing needs of children during outdoor activities. Summary of the Invention

[0004] This invention provides a children's body cleaning composition comprising phase A, phase B, and phase C. Phase A comprises alkyl polysaccharide and polyglycerol fatty acid ester; phase B comprises polyol, amphoteric surfactant, glycerol ester-type nonionic emulsifier, alkyl polysaccharide, trehalose, preservative, and water; and phase C comprises panthenol, plant extract, oil, and pH adjuster.

[0005] Optionally, by weight percentage, the components include: 1-3.5% alkyl polyglycosides, 0.5-1.5% polyglycerol fatty acid esters, 40-60% polyols, 6-10% amphoteric surfactants, 3-7% glycerol ester-type nonionic emulsifiers, 0.1-0.8% trehalose, 0.5-1% preservatives, 0.05-0.2% panthenol, 0.1-0.4% plant extracts, 0.001-0.005% oils, 0.1-2% pH adjusters, and water to make up the balance.

[0006] The alkyl polysaccharide includes C8-C 14 Alkyl glucoside.

[0007] Optionally, the C8-C14 Alkyl glucoside is selected from lauryl glucoside.

[0008] The polyglycerol fatty acid esters include trimer polyglycerol fatty acid esters.

[0009] Optionally, the trimer polyglycerol fatty acid is selected from polyglycerol-3 diisostearate.

[0010] Optionally, the weight ratio of alkyl polyglycosides to polyglycerol fatty acid esters in phase A is 1:(0.3-1).

[0011] Optionally, the weight ratio of alkyl polyglycosides to polyglycerol fatty acid esters in phase A is 1:(0.5-1).

[0012] The amphoteric surfactants include sodium cocoamphoacetate and sodium lauroylamphoacetate.

[0013] Optionally, the weight ratio of sodium cocoamphoacetate and sodium lauroylamphoacetate is 8:(1-2).

[0014] This invention relates to amphoteric surfactants comprising sodium cocoamphoacetate and sodium lauroylamphoacetate, which significantly reduce skin irritation while providing highly effective cleansing. Both surfactants have molecular structures containing both hydrophobic alkyl chains (cocoyl and lauroyl groups) and hydrophilic polar groups. The hydrophobic chains can bind to dirt, oil, and film-forming components in sunscreen products on the skin surface through hydrophobic interactions, while the hydrophilic groups can interact with water molecules to form micelles, encapsulating and dispersing dirt in water for highly effective cleansing. Furthermore, both surfactants exist in an amphoteric state in a weakly acidic formulation (pH 5.8-6.8), maintaining charge balance and being compatible with the skin's natural pH. This results in minimal damage to the lipid bilayer and protein structure of the stratum corneum, preventing excessive degreasing and reducing damage to the skin barrier. Therefore, while ensuring cleansing power, this significantly reduces irritation, making it suitable for children and those with sensitive skin.

[0015] The glycerol ester type nonionic emulsifier includes PEG-n caprylic / capric glycerides, where n is an integer from 4 to 8.

[0016] Optionally, the glycerol ester type nonionic emulsifier includes PEG-6 caprylic / capric glycerides.

[0017] The polyols include C3-C8 alcohols.

[0018] Optionally, the polyol includes glycerol and sorbitol.

[0019] Optionally, the weight ratio of glycerol to sorbitol is (8-12):1.

[0020] The preservatives include p-hydroxyacetophenone and phenoxyethanol.

[0021] The pH adjuster includes organic acids.

[0022] Optionally, the organic acid includes citric acid.

[0023] The plant extracts include dihydroagar alkaloid solution, trifoliate orange extract, and purslane extract.

[0024] The dihydrooat alkaloid solution comprises the following components (by weight): 5% hydroxyphenylpropionamide benzoic acid, 0.1% ascorbyl palmitate, 45% butanediol, and 49.9% 1,2-pentanediol.

[0025] The oils include vegetable oils and animal oils, with a weight ratio of 1:(0.8-1.2).

[0026] Optionally, the vegetable oil includes jojoba seed oil, and the animal oil includes egg yolk oil.

[0027] Optionally, the weight ratio of glycerol, sorbitol and trehalose is 55:(3-7):(0.3-1).

[0028] Optionally, the weight ratio of panthenol to plant extract is 0.1:(0.1-0.4).

[0029] Optionally, the weight ratio of the amphoteric surfactant, glycerol ester-type nonionic emulsifier, and alkyl polysaccharide in phase B is 10:(3-7):(0.8-2.5).

[0030] Optionally, the weight ratio of the amphoteric surfactant, glycerol ester-type nonionic emulsifier, and alkyl polysaccharide in phase B is 10:(3-7):(0.8-1.5).

[0031] The second aspect of the present invention provides a method for preparing a child body cleaning composition, comprising the following steps: premixing the components of phase A and phase B to obtain phase A and phase B for later use; sequentially adding phase A and phase C to phase B and mixing evenly to obtain the child body cleaning composition.

[0032] Beneficial effects 1. The amphoteric surfactants of the present invention include sodium cocoamphoacetate and sodium lauroylamphoacetate, which can significantly reduce the skin irritation of cleaning products while being highly effective in cleaning.

[0033] 2. By limiting the weight ratio of glycerin, sorbitol and trehalose to 55:(3-7):(0.3-1), this invention can further enhance the skin barrier function, reduce skin moisture loss, and provide long-lasting moisturizing effects.

[0034] 3. The weight ratio of panthenol to plant extract is 0.1:(0.1-0.4), which significantly enhances the soothing and repairing ability of the formula.

[0035] 4. By limiting the weight ratio of amphoteric surfactant, glyceryl ester nonionic emulsifier and alkyl polysaccharide in phase B to 10:(3-7):(0.8-2.5), this invention can effectively dissolve waterproof film-forming agents and oil components in sunscreen products, thereby achieving the function of removing sunscreen.

[0036] 5. The cleansing composition prepared by this invention is suitable for children's skin and has the functions of gentle cleansing, long-lasting moisturizing, soothing and repairing, and removing sunscreen. Attached Figure Description

[0037] Figure 1 The data graphs show the clearance rates of samples from Example 1 and Comparative Examples 1-5, where T0 represents the baseline skin parameter values ​​in the test area before the application of the sample, and T1 represents the skin parameter values ​​in the test area after the application of the sunscreen sample.

[0038] T2 – Skin parameter values ​​after the test area was cleaned with a clean sample.

[0039] Figure 2 The graph shows the clearance rate data for samples from Examples 2-3 and Comparative Examples 6-7.

[0040] Figure 3 The results are from consumer testing of the sample in Example 1.

[0041] Figure 4 The results are from consumer testing of the sample in Example 1. Detailed Implementation

[0042] Examples 1-3, Comparative Examples 1-7 A child body cleaning composition comprising phase A, phase B and phase C, as shown in Tables 1 and 2 by weight percentage.

[0043] Table 1

[0044] Table 2

[0045] The dihydroamarine alkaloid solution was prepared in-house and consisted of the following components (by weight): 5% hydroxyphenylpropionamide benzoic acid, 0.1% ascorbyl palmitate, 45% butanediol, and 49.9% 1,2-pentanediol. The purslane extract was purchased from Shanghai Baihaobo Biotechnology Co., Ltd., and the source of the components was not specified, nor were the manufacturers or models limited.

[0046] A method for preparing a children's body cleaning composition includes the following steps: Premixing phase A raw materials, weighing the raw materials according to the formula table, heating to 75°C, premixing evenly, and setting aside; Premixing phase B raw materials, weighing the raw materials according to the formula table, adding to the main pot, heating to 75°C, adding premixed phase A, stirring and mixing for 20 minutes at a stirring speed of 500 r / min, dissolving evenly, cooling to 40°C, adding phase C, testing the physicochemical values, and discharging after passing the test.

[0047] Performance testing methods and data The compositions prepared in Comparative Examples 1-5 are named Sample 1-5, the composition prepared in Example 1 is named Sample 6, the composition prepared in Comparative Example 6 is named Sample 7, the compositions prepared in Examples 2-3 are named Sample 8-9, and the composition prepared in Comparative Example 7 is named Sample 10.

[0048] The above samples were subjected to the following performance tests.

[0049] 1. Number of bubbles per square millimeter in the test sample: Test instrument: DFA100 dynamic foam analyzer; Test conditions: Temperature: 23±1℃, Concentration: diluted to 5% deionized water solution, Solution volume: 50 ml, Rotation speed: 3000 rpm / min, Foaming time: stir for 3 seconds and stop for 3 seconds, continuous for 30 cycles, Defoaming time: 15 minutes, The results are shown in Table 3.

[0050] 2. Remove sunscreen, referring to T / GDCA 041-2024 Evaluation Method for Water-Washable Sunscreen Cosmetics. Guangdong: Guangdong Cosmetics Society, 2024. (T0 is the initial skin state, T1 is after applying sunscreen, and T2 is after cleansing). Figure 1 and Figure 2 As shown, the sample removal rate in the embodiment can reach about 90%.

[0051] 3. Consumer testing was conducted using sample 6. There were 33 valid participants: 5 males and 28 females, aged 22-38 years, with a mean age of 27.58 ± 3.87 years. During the testing period, participants replaced their usual bath oil with the test product according to the protocol, applying an appropriate amount evenly to the test area. The test product was used at least once every two days, and participants were required to maintain their original cleansing and skincare habits. Evaluation method: Questionnaire. Figure 3 and Figure 4 As shown, the sample of Example 1 received excellent consumer feedback.

[0052] Table 3

[0053] As can be clearly seen from the sunscreen removal rate test data of Example 1 and Comparative Examples 1-5 in Figure 1 and Examples 2-3 and Comparative Examples 6-7 in Figure 2, the sample of the example that meets the formulation limit of this application shows a significant advantage in sunscreen removal performance, which is far superior to the comparative sample with various defects in the formulation. In Figure 1, the sunscreen removal rate of Example 1 (Sample 6) reached 89.73%, while the removal rates of Comparative Examples 1-5 (Samples 1-5) were all lower than this value. Among them, Comparative Example 1 was 86.98%, Comparative Examples 2-4 were about 80%, and Comparative Example 5 was as low as 77.50%. These comparative examples had problems such as missing / replaced core components of phase A, polyol content exceeding the range, and alkyl polysaccharide content deviating from the limits of this application, resulting in a decrease in the ability to dissolve the waterproof film-forming agent and oils in the sunscreen product. In Figure 2, the sunscreen removal rates of Example 2 (Sample 8) and Example 3 (Sample 9) were further improved, reaching 93.13% and 90.23% respectively. However, the removal rate of Comparative Example 6 (Sample 7) was only 83.59% due to the absence of polyglycerol fatty acid esters in phase A and deviation of the amphoteric surfactant ratio. Comparative Example 7 (Sample 10) had a sunscreen removal rate that dropped significantly to 64.01% due to the content of amphoteric surfactant exceeding the upper limit, which was the lowest among all tested samples. The above data fully verify that only a formula designed in strict accordance with the requirements of this application regarding the composition of the core components of phase A, the proportions of key components, and the content range can effectively improve the sunscreen removal ability of the children's body cleansing composition. Any deviation from the formula design in any aspect will result in a significant decrease in its sunscreen removal performance.

Claims

1. A child body cleaning composition, characterized in that, The components include phase A, phase B, and phase C. Phase A includes alkyl polysaccharide glycosides and polyglycerol fatty acid esters; phase B includes polyols, amphoteric surfactants, glycerol ester-type nonionic emulsifiers, alkyl polysaccharide glycosides, trehalose, preservatives, and water; and phase C includes panthenol, plant extracts, oils, and pH adjusters.

2. The child body cleaning composition according to claim 1, characterized in that, By weight percentage, the components include: 1-3.5% alkyl polyglycosides, 0.5-1.5% polyglycerol fatty acid esters, 40-60% polyols, 6-10% amphoteric surfactants, 3-7% glycerol ester-type nonionic emulsifiers, 0.1-0.8% trehalose, 0.5-1% preservatives, 0.05-0.2% panthenol, 0.1-0.4% plant extracts, 0.001-0.005% oils, 0.1-2% pH adjusters, and water to make up the balance.

3. The child body cleaning composition according to claim 2, characterized in that, The weight ratio of alkyl polysaccharide to polyglycerol fatty acid ester in phase A is 1:(0.3-1).

4. The child body cleaning composition according to claim 3, characterized in that, The amphoteric surfactants include sodium cocoamphoacetate and sodium lauroylamphoacetate.

5. The child body cleaning composition according to claim 1 or 4, characterized in that, The polyols include glycerol and sorbitol, wherein the weight ratio of glycerol to sorbitol is (8-12):

1.

6. The child body cleaning composition according to claim 5, characterized in that, The weight ratio of glycerol, sorbitol and trehalose is 55:(3-7):(0.3-1).

7. The child body cleaning composition according to claim 1, characterized in that, The weight ratio of panthenol to plant extract is 0.1:(0.1-0.4).

8. The child body cleaning composition according to claim 7, characterized in that, The plant extracts include dihydroagar alkaloid solution, trifoliate orange extract, and purslane extract.

9. The child body cleaning composition according to claim 8, characterized in that, The weight ratio of the amphoteric surfactant, glycerol ester-type nonionic emulsifier, and alkyl polysaccharide in phase B is 10:(3-7):(0.8-2.5).

10. A method for preparing a child body cleaning composition according to any one of claims 1-9, characterized in that, Includes the following steps: The components of phase A, phase B and phase C are premixed to obtain phase A, phase B and phase C for later use; phase A and phase C are added to phase B in sequence and mixed evenly to obtain a children's body cleaning composition.

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