A natural origin baby cream composition with reduced whitening and a method of making the same

Abstract

The application discloses a natural-source baby cream composition with reduced whitening and a preparation method thereof. The composition comprises an emulsifier system, an oil system and a thickening system. The emulsifier system comprises 1.5-4.5% of polyglycerol emulsifiers and 0.3-2.25% of glycerol stearate citrate by mass percentage; the oil system comprises 5-25% of liquid oil and 5-15% of solid oil; and the thickening system comprises 0.1-2.1% of short-rheology thickening agents. The three formula systems are synergistic, the inherent whitening effect of high natural-source plant oil cream is eliminated without using silicone oil, the natural-source content of raw materials can reach 99.5%, and meanwhile, the natural triterpenol in camellia seed oil and flaxseed oil is synergistic, so that the cream has excellent soothing and repairing effects. The application further provides a preparation method of the composition, and the process is simple and easy for industrial production.

Description

Technical Field

[0001] This invention relates to the field of cosmetic technology, and in particular to a natural-source baby face cream composition that reduces whitening and its preparation method. Background Technology

[0002] Driven by consumer demand for organic and environmentally friendly products, the global natural skincare market is experiencing significant growth. Growing awareness of the harmful effects of synthetic ingredients is prompting consumers to seek safer and healthier alternatives. Natural plant-based ingredients are emerging as a new trend in the skincare market. Consumers are increasingly focused on product safety and environmental friendliness, preferring cosmetics made from natural plants, fruits, or their extracts.

[0003] Infant skin differs significantly from adult skin. Infants have a thinner epidermis, less sebum secretion, and an immature skin barrier, making them more susceptible to external stimuli and prone to dryness, eczema, and other skin problems. Compared to adults, infants require safer, healthier, and more natural products.

[0004] The use of plant oils in baby face creams can reduce the use of synthetic oils and silicone oils, and has additional skincare benefits. However, face cream formulas with high natural source content often use synthetic oils rather than plant oils. This is because excessive use of plant oils in emulsified face creams can cause a "soaping effect," where white streaks appear on the skin after application, severely affecting the user experience. Therefore, emulsified face creams with high natural source content are less common on the market.

[0005] Whitening is essentially a microfoaming phenomenon: during the application of lotions / creams, air is introduced and temporarily dispersed within the product film, forming countless tiny bubbles. These bubbles, along with the lotion flakes, scatter visible light, appearing white to the naked eye. The reason plant oils cause severe whitening is that polar oils like plant oils contain abundant free fatty acids and saponifiable groups, which exacerbate the microfoaming phenomenon. Therefore, formulas with highly natural sources typically exhibit a more pronounced whitening effect.

[0006] Some baby face creams improve the user experience and reduce whitening by adding silicone oil and reducing the amount of plant oil. However, silicone oil is a synthetic oil, which is not environmentally friendly, can cause a slippery feeling on the skin, and also poses a risk of clogging pores, without providing any skincare benefits.

[0007] In addition, the content of natural ingredients in existing baby face cream products is generally low, while the concept of sustainable development and the trend towards natural ingredients are the current product directions and also the urgent needs of consumers.

[0008] Therefore, developing a high-efficacy face cream for infants and children that is naturally sourced, possesses excellent moisturizing, soothing, and repairing effects, while ensuring a safe, gentle, and simple formula, and effectively solves the problem of whitening after applying face creams with high plant oil content, is of great significance to the infant and children's skincare industry. Summary of the Invention

[0009] The purpose of this invention is to provide a natural-source baby face cream composition that reduces whitening and its preparation method. This invention eliminates or significantly reduces the whitening effect of plant oil emulsion systems through the synergistic effect of three systems without introducing silicone oil, while simultaneously utilizing the natural active factors of the plant oil itself to achieve soothing and repairing effects.

[0010] The technical solution of the present invention:

[0011] A natural-source baby face cream composition that reduces whitening, comprising an emulsifier system, an oil system, and a thickening system;

[0012] By mass percentage, the emulsifier system includes 1.5% to 4.5% polyglycerol emulsifier and 0.3% to 2.25% glyceryl stearate citrate, the oil system includes 5% to 25% liquid oil and 5% to 15% solid oil, and the thickening system includes 0.1% to 2.1% short-rheology thickener; the short-rheology thickener refers to a thickener with a limited flow range that does not easily flow or diffuse after shearing stops.

[0013] In the aforementioned natural-source baby face cream composition for reducing whitening, the polyglycerol emulsifier includes at least one or more of polyglycerol-6 stearate and polyglycerol-10 stearate; the mass ratio of the polyglycerol emulsifier to glycerol stearate citrate is 5:1 to 2:1.

[0014] In the aforementioned natural-source baby face cream composition for reducing whitening, the mass ratio of liquid oil to solid oil is 2:1 to 1:1; the liquid oil comprises camellia seed oil and flaxseed oil in a mass ratio of 7:1 to 1:1; and the solid oil comprises at least one or more of palmitic acid, cetearyl alcohol, and C10-18 fatty acid triglycerides.

[0015] In the aforementioned natural-source baby face cream composition for reducing whitening, the short rheology thickener is an acrylamide dimethyl taurate ammonium / VP copolymer and / or cellulose gum.

[0016] The aforementioned natural-source baby face cream composition for reducing whitening also includes cosmetic excipients, which include at least moisturizers and preservatives.

[0017] A method for preparing a natural-source baby face cream composition that reduces whitening, comprising the following specific steps:

[0018] S1. Preparation of aqueous phase: Mix short rheology thickener and water, heat to 70℃~80℃, add polyglycerol emulsifier, humectant and preservative, stir to dissolve evenly, and use as aqueous phase;

[0019] S2. Preparation of oil phase: Mix liquid oil, solid oil and glyceryl stearate citrate in proportion, heat to 70℃~80℃, stir to dissolve evenly, and use as oil phase;

[0020] S3. Emulsification: Add the oil phase to the water phase, mix and homogenize, cool to 35℃~40℃, and discharge to obtain the finished baby face cream composition.

[0021] In the aforementioned method for preparing a natural-source baby face cream composition that reduces whitening, the temperature is raised to 75°C in step S1.

[0022] In the aforementioned method for preparing a natural-source baby face cream composition that reduces whitening, the temperature is raised to 75°C in step S2.

[0023] In the aforementioned method for preparing a natural-source baby face cream composition that reduces whitening, the temperature is lowered to 38°C in step S3.

[0024] Compared with the prior art, the beneficial effects of this application are as follows:

[0025] 1. Significantly eliminates the whitening effect:

[0026] By combining three formulation technologies, the whitening score of the example was as low as 0-0.1, the whitening time was only 0-6 seconds, and the consumer satisfaction score reached a full score of 5. In contrast, the whitening score of the comparative example lacking any of the technologies was as high as 3.5-4.8, the whitening time was 45-116 seconds, and the satisfaction score was only 1-3.2. The comparison shows that the effect of this application in eliminating or reducing whitening is significant.

[0027] The principle is as follows: Polyglycerol emulsifiers have relatively weak emulsifying ability, so they cannot emulsify air during application, resulting in bubbles and whitening; the appropriate combination and ratio of oils dilutes the saponifiable groups of vegetable oils, reducing their fluidity and thus reducing whitening; compared with long-term rheology thickeners with better fluidity, short-term rheology thickeners are less likely to trap bubbles in the thickener network during application, further reducing whitening; ultimately, the three work together to significantly reduce and eliminate whitening.

[0028] 2. High content of natural sources:

[0029] The ingredients in this application have a high content of natural sources. Except for the preservative p-hydroxyacetophenone, which is of synthetic origin, all other raw materials are of natural origin. When all other raw materials are of natural origin, the total content of natural sources in the entire formula can reach 99.5%, which meets the concept of sustainable development of cosmetics, the natural trend, and consumer demand.

[0030] 3. Silicone-free, high safety:

[0031] This application does not require the use of silicone oil. Through the synergistic effect of the formulation system, it can achieve a non-whitening effect when applied with high plant oil content, avoiding the slippery feeling and potential risk of pore clogging caused by silicone oil.

[0032] 4. Synergistic effect of soothing and repairing:

[0033] Experiments on 3D skin models showed that the composition of this invention inhibited IL-1α by 36.79% and IL-8 by 70.02%, which is much higher than that of camellia seed oil alone (IL-1α 14.85%, IL-8 27.67%), flaxseed oil alone (IL-1α 15.25%, IL-8 32.69%), or other plant oils (soybean oil: IL-1α 5.61%, IL-8 10.57%). This demonstrates that camellia seed oil and flaxseed oil have a significant synergistic effect in soothing and repairing the skin.

[0034] 5. Simplified formula:

[0035] This application achieves strong efficacy through plant oils, and has good effects on improving infant skin problems without adding other active ingredients. It conforms to the principles of "natural and safe, essential efficacy, and minimalist formula", avoiding additives such as fragrances, alcohol, and pigments that are unsuitable for infant skin, and reducing the risk of allergic reactions. Attached Figure Description

[0036] Figure 1 These are the whitening effect diagrams of the embodiment and comparative example 1 in Experiment 1;

[0037] Figure 2 These are the whitening effect images of Comparative Examples 2-6 in Experiment 1;

[0038] Figure 3 These are microscope images of the material applied in Examples 1 and Comparative Example 1 in Experiment 1;

[0039] Figure 4 These are microscope images of the material applied in Comparative Examples 2-6 of Experiment 1;

[0040] Figure 5 These are the whitening effect diagrams of the embodiment and comparative example in Experiment 3. Detailed Implementation

[0041] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0042] Example 1. A natural-derived baby face cream composition for reducing whitening, wherein the emulsifier system comprises 3% polyglycerol-6 stearate and 1% glycerol stearate citrate by weight percentage;

[0043] The oil system includes 10% camellia seed oil, 5% linseed oil, 2% palmitic acid, 2% cetearyl alcohol, and 6% C10-18 fatty acid triglycerides;

[0044] The thickening system includes 1% acrylamide dimethyl taurate ammonium / VP copolymer;

[0045] 0.5% p-hydroxyacetophenone, 0.5% 1,2-hexanediol, humectant and balance water.

[0046] The preparation method is as follows:

[0047] S1. Disperse 1% thickener and water (make up to 100%) evenly in a water pot, stir and heat to 75°C, add 3% polyglycerol-6 stearate, humectant, 0.5% p-hydroxyacetophenone and 0.5% 1,2-hexanediol and dissolve evenly to form the aqueous phase;

[0048] S2. Add 10% camellia seed oil, 5% linseed oil, 2% palmitic acid, 2% cetearyl alcohol, 6% C10-18 fatty acid triglycerides, and 1% glyceryl stearate citrate to an oil pan and heat to 75°C to dissolve evenly as the oil phase.

[0049] S3. Add the oil phase to the water phase, mix and homogenize, then cool to 38℃ and discharge to obtain the finished product.

[0050] The formulation in Example 1 has a natural source content of 98.5%.

[0051] Example 2. A natural-source baby face cream composition that reduces whitening, which is basically the same as that in Example 1, except that the thickening system is 1% by weight of short rheological cellulose gum; the cellulose gum is a naturally sourced thickener.

[0052] The formulation in Example 2 has a natural source content of 99.5%.

[0053] Example 3. A natural-source baby face cream composition that reduces whitening, essentially the same as in Example 1, except that the emulsifier system includes 3% polyglycerol-10 stearate and 1% glycerol stearate citrate.

[0054] The formulation in Example 3 has a natural source content of 98.5%.

[0055] Example 4. A natural-source baby face cream composition that reduces whitening, which is basically the same as Example 1, except that the thickening system is 0.5% by weight of short rheological cellulose gum and 0.5% by weight of acrylamide dimethyl taurate ammonium / VP copolymer; the cellulose gum is a naturally sourced thickener.

[0056] The formulation in Example 4 has a natural source content of 99.0%.

[0057] Comparative Example 1.

[0058] It is basically the same as Example 1, except that xylose emulsifier is used instead of polyglycerol-6 stearate.

[0059] Comparative Example 2.

[0060] The results are basically the same as in Example 1, except that sodium polyacrylate with a long rheological range is used instead of sodium acrylamide dimethyl taurate / VP copolymer. The long rheological thickener has a wide flow range and can maintain good flow consistency after shearing.

[0061] Comparative Example 3.

[0062] The method is basically the same as in Example 1, except that the oil system includes 10% camellia seed oil, 5% flaxseed oil, 5% caprylic / capric triglycerides, 1% palmitic acid, 1% cetearyl alcohol, and 3% C10-18 fatty acid triglycerides.

[0063] Comparative Example 4.

[0064] It is basically the same as Example 1, except that:

[0065] The oil system includes 10% camellia seed oil, 5% flaxseed oil, 5% caprylic / capric triglycerides, 1% palmitic acid, 1% cetearyl alcohol, and 3% C10-18 fatty acid triglycerides;

[0066] The thickening system includes 1% long-rheological sodium polyacrylate.

[0067] Comparative Example 5.

[0068] It is basically the same as Example 1, except that:

[0069] Replace polyglycerol-6 stearate with xylose emulsifier;

[0070] The oil system includes 10% camellia seed oil, 5% flaxseed oil, 5% caprylic / capric triglycerides, 1% palmitic acid, 1% cetearyl alcohol, and 3% C10-18 fatty acid triglycerides.

[0071] Comparative Example 6.

[0072] It is basically the same as Example 1, except that:

[0073] Replace polyglycerol-6 stearate with xylose emulsifier;

[0074] Use long-rheology sodium polyacrylate to replace short-rheology thickener.

[0075] Comparative Example 7.

[0076] It is basically the same as Example 1, except that:

[0077] The oil system includes 15% camellia seed oil, 2% palmitic acid, 2% cetearyl alcohol, and 6% C10-18 fatty acid triglycerides.

[0078] Comparative Example 8.

[0079] It is basically the same as Example 1, except that:

[0080] The oil system includes 15% flaxseed oil, 2% palmitic acid, 2% cetearyl alcohol, and 6% C10-18 fatty acid triglycerides.

[0081] Comparative Example 9.

[0082] It is basically the same as Example 1, except that:

[0083] The oil system includes 15% soybean oil, 2% palmitic acid, 2% cetearyl alcohol, and 6% C10-18 fatty acid triglycerides.

[0084] Comparative Example 10.

[0085] It is basically the same as Example 1, except that:

[0086] Replace polyglycerol-6 stearate with xylose emulsifier;

[0087] The oil system includes 1% camellia seed oil, 0.5% flaxseed oil, 13.5% caprylic / capric triglycerides (GTCC), 2% palmitic acid, 2% cetearyl alcohol, and 6% C10-18 fatty acid triglycerides.

[0088] Verification Experiment

[0089] Experiment 1: Whitening Experiment

[0090] The sensory evaluation of each case (example and comparative) was conducted by 30 consumers, and the average value was used to measure the whitening of each case. The evaluation was carried out from three dimensions: whitening score, whitening time, and consumer satisfaction.

[0091] In the case study, consumers were sampled and controlled at 0.15g and applied to the same skin area. During the application process, the whitening score ranged from 0 to 5, with lower scores indicating a lower degree of whitening effect.

[0092] The whitening time was measured with a stopwatch, and the satisfaction level was set from 0 to 5, corresponding to very dissatisfied, dissatisfied, average, satisfied and very satisfied. The average score was taken, and the higher the score, the more satisfied the consumer was with the skin feel and the lack of whitening.

[0093] The average scores and durations of the white-washing process for different cases are shown in Table 1.

[0094] The whitening process in different cases was photographed and recorded. The whitened material was scraped off during application and observed under a microscope. Macroscopic images of the whitening process in different cases are attached. Figure 1 and attached Figure 2 See attached document for microstructure. Figure 3 and attached Figure 4 .

[0095] Table 1. Average scores and duration of the whitewashing process in different cases (tested by 30 consumers).

[0096]

[0097] As can be clearly seen from Table 1, whether it is the whitening score, the average whitening time, or the average satisfaction, the example using the three formulation systems in synergy is far superior to the comparative examples using only two formulation systems and only one formulation system. This shows that the synergistic effect of the three formulation systems is necessary to eliminate the whitening effect of plant oil face cream.

[0098] From the appendix Figure 1 -Appendix Figure 4 Based on the whitening images of different cases and the microscopic characterization of the whitening material, it can be found that after application in Examples 1-4, there are basically no bubbles, and the bubbles are small, so macroscopically there is no whitening effect.

[0099] In Comparative Examples 1-6, the more severe the whitening effect, the more numerous, larger, and denser the bubbles in the microstructure.

[0100] Appendix Figure 1 -Appendix Figure 4 The results are consistent with Table 1, indicating that the examples using the three formulation systems in synergy are far superior to the comparative examples using only two formulation systems and only one formulation system, demonstrating that the synergistic effect of the three formulation systems is necessary to eliminate the whitening effect of the plant oil cream.

[0101] Experiment 2 Inflammation Suppression Experiment

[0102] Based on a 3D skin model, the inhibitory effects of the embodiments and comparative examples on inflammatory factors were tested, and the results are shown in Table 2.

[0103] Inhibition rate = (SLS stimulation group - Sample group) / SLS stimulation group * 100%

[0104] Table 2. Inhibition rate of inflammatory factors after sampling in the 3D skin model.

[0105]

[0106] Based on the inhibition rate of inflammatory factors before and after product use, Example 1 showed the strongest soothing effect on the skin after three days of use, which was far superior to Comparative Examples 7-9. Based on the value of the change rate, it can be concluded that camellia seed oil and flaxseed oil have a synergistic soothing effect on skin damage.

[0107] Experiment 3: Soothing Effect Experiment

[0108] Whitening tests were performed on Examples 1, 1 Comparative Example, and 10, and the inhibition rates of inflammatory factors were measured in Examples 1 and 10; the results are shown in Table 3 and Appendix. Figure 5 As shown.

[0109] Table 3. Inhibition rate of inflammatory factors after sampling in the 3D skin model.

[0110]

[0111] According to the appendix Figure 5 In comparison, Comparative Example 10, which used synthetic oil GTCC to replace part of the plant oil, thus reducing the amount of plant oil added, showed almost no whitening phenomenon, just like Example 1. That is, the whitening of the plant oil cream was mostly caused by the plant oil.

[0112] According to Table 3, compared to Example 1, the soothing effect of Comparative Example 10 was significantly reduced, indicating that sufficient addition of plant oils to the face cream can achieve a better soothing effect, while synthetic oil GTCC does not possess the soothing ability of plant oils. The soothing effect of Comparative Example 1 was basically the same as that of Example 1, indicating that the main active ingredient in the face cream is plant oil.

Claims

1. A natural-source baby face cream composition that reduces whitening, characterized in that: This includes emulsifier systems, oil systems, and thickening systems; By weight percentage, the emulsifier system includes 1.5% to 4.5% polyglycerol emulsifiers and 0.3% to 2.25% glycerol stearate citrate, the oil system includes 5% to 25% liquid oils and 5% to 15% solid oils, and the thickening system includes 0.1% to 2.1% short rheology thickeners.

2. The natural-derived baby face cream composition for reducing whitening according to claim 1, characterized in that: The polyglycerol emulsifier includes at least one or more of polyglycerol-6 stearate and polyglycerol-10 stearate; the mass ratio of the polyglycerol emulsifier to glycerol stearate citrate is 5:1 to 2:

1.

3. The natural-derived baby face cream composition for reducing whitening according to claim 1, characterized in that: The mass ratio of liquid oil to solid oil is 2:1 to 1:1; the liquid oil contains camellia seed oil and flaxseed oil in a mass ratio of 7:1 to 1:1; the solid oil includes at least one or more of palmitic acid, cetearyl alcohol and C10-18 fatty acid triglycerides.

4. The natural-derived baby face cream composition for reducing whitening according to claim 1, characterized in that: The short rheology thickener is an acrylamide dimethyl taurate ammonium / VP copolymer and / or cellulose gum.

5. The natural-derived baby face cream composition for reducing whitening according to claim 1, characterized in that: It also includes cosmetic excipients, which include moisturizers and preservatives.

6. A method for preparing the natural-derived baby face cream composition according to any one of claims 1-5, characterized in that, The specific steps are as follows: S1. Preparation of aqueous phase: Mix short rheology thickener and water, heat to 70℃~80℃, add polyglycerol emulsifier, humectant and preservative, stir to dissolve evenly, and use as aqueous phase; S2. Preparation of oil phase: Mix liquid oil, solid oil and glyceryl stearate citrate in proportion, heat to 70℃~80℃, stir to dissolve evenly, and use as oil phase; S3. Emulsification: Add the oil phase to the water phase, mix and homogenize, cool to 35℃~40℃, and discharge to obtain the finished baby face cream composition.

7. The method for preparing a natural-derived baby face cream composition for reducing whitening according to claim 6, characterized in that: In step S1, the temperature is raised to 75°C.

8. A method for preparing a natural-source baby face cream composition for reducing whitening according to claim 6, characterized in that: In step S2, the temperature is raised to 75°C.

9. A method for preparing a natural-source baby face cream composition for reducing whitening according to claim 6, characterized in that: In step S3, the temperature is lowered to 38°C.

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