Shea butter composition as well as preparation method and application thereof

Abstract

The invention belongs to the technical field of cosmetics, and particularly relates to a shea butter composition as well as a preparation method and application thereof. The shea butter composition is prepared from the following raw materials in percentage by weight: 0.1 to 35 percent of shea butter, 0.01 to 0.5 percent of ceramide, 0.01 to 0.3 percent of sodium bacillus subtilis lipopeptide, 10 to 50 percent of glycerol and the balance of water. The shea butter composition has the beneficial effects that the shea butter composition has better moisturizing and repairing effects on skin, a surfactant used in the preparation process of the shea butter composition is far lower than that used in a traditional emulsion, and the shea butter composition has better popularization advantages; when applied to cosmetics, the product hardly promotes transdermal absorption of harmful substances such as preservatives, and is especially suitable for pregnant women, infants, people with sensitive skin and the like.

Description

Technical Field

[0001] This invention belongs to the field of cosmetic technology, specifically relating to a shea butter composition, its preparation method, and its application. Background Technology

[0002] Shea butter is rich in unsaponifiable components, making it easily absorbed by the body. It can prevent dryness and cracking, further restoring and maintaining the skin's natural elasticity. However, because shea butter is rich in triterpenoid esters, it can affect the emulsification effect in emulsification systems, preventing the shea butter's moisturizing and hydrating effects from being fully realized.

[0003] Existing technologies prepare shea butter into nano- or submicron-sized emulsions to promote absorption. Traditional nano- or submicron emulsions typically have a lipid-soluble to surfactant ratio of 10:1 to 3:1. With emulsion particle sizes of 40-200 nm, these emulsions enhance the transdermal absorption of surfactants and preservatives in cosmetic formulations, which is acceptable for most people, but less suitable for children, pregnant women, and those with sensitive skin. Furthermore, nano-emulsions require specialized equipment such as high-pressure microfluidics, resulting in higher application costs and limitations. Surfactants are one of the three major irritants in cosmetic formulations, and long-term use in consumer products is not ideal for those with sensitive skin or other specific skin concerns. Summary of the Invention

[0004] This application provides a shea butter composition with moisturizing and repairing effects, which has almost no promoting effect on the transdermal absorption of harmful substances such as preservatives, as well as its preparation method and application.

[0005] The first aspect of this application provides a shea butter composition comprising the following raw materials in weight percentages: 0.1-35% shea butter, 0.01-0.5% ceramide, 0.01-0.3% sodium subtilis lipopeptide, 10-50% glycerol, and the balance being water.

[0006] The shea butter composition described in this application has better moisturizing and repairing effects on the skin. Furthermore, the surfactants used in the preparation process of the shea butter composition described in this application are far lower than those used in traditional emulsions, giving it a significant advantage in terms of marketability. When applied to cosmetics, it has almost no promoting effect on the transdermal absorption of preservatives and other harmful substances, making it particularly suitable for pregnant women, infants, and people with sensitive skin.

[0007] According to some embodiments of the shea butter composition described in this application, the mass ratio of the shea butter to the ceramide is (50-200):1.

[0008] According to some embodiments of the shea butter composition described in this application, the sum of the amounts of shea butter and ceramide is in a mass ratio of (50-120):1 to the mass of the sodium subtilis lipopeptide.

[0009] According to some embodiments of the shea butter composition described in this application, the total mass ratio of the shea butter and ceramide to the total mass ratio of the subtilis lipopeptide sodium and glycerol is 7:3-1:9.

[0010] According to some embodiments of the shea butter composition described in this application, the ceramide is ceramide NP.

[0011] The second aspect of this application provides a method for preparing the shea butter composition described in the first aspect of this application, comprising the following steps: mixing glycerol and sodium subtilis lipopeptide, adding shea butter and ceramide under stirring conditions to form a gel, adding water to the gel and stirring to form an emulsion, and homogenizing to obtain the shea butter composition.

[0012] According to some embodiments of the preparation method of the shea butter composition described in this application, the temperature for mixing to form a gel is 50-60°C, and the homogenization is performed under a pressure of 15-30 kPa.

[0013] A third aspect of this application provides a cosmetic product comprising the shea butter composition described in the first aspect of this application or the shea butter composition obtained by the preparation method described in the second aspect of this application.

[0014] According to some embodiments of the cosmetic described in this application, the amount of the shea butter composition added is 1-20% of the cosmetic's mass.

[0015] According to some embodiments of the cosmetics described in this application, the cosmetics include toners, lotions, creams, shampoos, shower gels, or facial cleansers.

[0016] The beneficial effects of this application include: the shea butter composition described in this application has better moisturizing and repairing effects on the skin, and the surfactants used in the preparation process of the shea butter composition described in this application are far lower than those in traditional emulsions, which has a good promotional advantage; when applied to cosmetics, it has almost no promoting effect on the transdermal absorption of preservatives and other harmful substances, and is especially suitable for pregnant women, infants, sensitive skin and other people. Detailed Implementation

[0017] The embodiments of the present invention are described in detail below. These embodiments are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0018] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0019] This application provides a shea butter composition comprising the following raw materials in weight percentages: 0.1-35% shea butter, 0.01-0.5% ceramide, 0.01-0.3% sodium subtilis lipopeptide, 10-50% glycerol, and the balance being water.

[0020] The shea butter composition described in this application has better moisturizing and repairing effects on the skin. Furthermore, the surfactants used in the preparation process of the shea butter composition described in this application are far lower than those used in traditional emulsions, giving it a significant advantage in terms of marketability. When applied to cosmetics, it has almost no promoting effect on the transdermal absorption of preservatives and other harmful substances, making it particularly suitable for pregnant women, infants, and people with sensitive skin.

[0021] In some embodiments of this application, the mass ratio of shea butter to ceramide is (50-200):1; for example, 50:1, 80:1, 120:1, 150:1, 180:1, 200:1, etc.

[0022] In some embodiments of this application, the mass ratio of the sum of the shea butter and ceramide to the sodium subtilis lipopeptide is (50-120):1, for example, 50:1, 80:1, 96:1, 105:1, 113:1, 120:1, etc.

[0023] In some embodiments of this application, the total mass ratio of the shea butter and ceramide to the total mass ratio of the Bacillus subtilis lipopeptide sodium and glycerol is 7:3-1:9.

[0024] In some embodiments of this application, the ceramide is ceramide NP. Ceramide NP is a specific type of ceramide with the chemical structure N-stearoyl-phytosphoamino alcohol. Its molecular structure has both hydrophilic and hydrophobic properties, enabling it to embed in the lipid bilayer of the stratum corneum. It is an important component of the skin's natural lipids, especially present in the stratum corneum, and is crucial for maintaining the skin barrier function and moisturizing.

[0025] This application also provides a method for preparing the shea butter composition described in the first aspect of this application, comprising the following steps: mixing glycerol and sodium subtilis lipopeptide, adding shea butter and ceramide under stirring conditions to form a gel, adding water to the gel and stirring to form an emulsion, and homogenizing to obtain the shea butter composition.

[0026] In some embodiments of this application, the temperature at which the gel is formed is 50-60°C, such as 50°C, 55°C, 58°C, 60°C, etc., and the homogenization is carried out under a pressure of 15-30 kPa, such as 15 kPa, 18 kPa, 20 kPa, 26 kPa, 30 kPa, etc.

[0027] This application also provides a cosmetic product, including the shea butter composition described in the first aspect of this application or the shea butter composition obtained by the preparation method described in the second aspect of this application.

[0028] In some embodiments of this application, the amount of the shea butter composition added is 1-20% of the cosmetic mass, such as 1%, 5%, 10%, 15%, 20%, etc.

[0029] In some embodiments of this application, the cosmetics include lotions, emulsions, creams, shampoos, shower gels, or facial cleansers.

[0030] The technical solution of this application will be further described below with reference to the embodiments.

[0031] Example 1 A method for preparing a shea butter composition includes the following steps: mixing 14.7g of glycerol and 0.3g of Bacillus subtilis lipopeptide sodium, adding 34.5g of shea butter and 0.5g of ceramide NP under stirring conditions, mixing at 50°C to form a gel, adding 50g of water to the gel and stirring to form an emulsion, and homogenizing under 20KPa conditions to obtain the shea butter composition.

[0032] Example 2 A method for preparing a shea butter composition includes the following steps: mixing 34.7g of glycerol and 0.3g of Bacillus subtilis lipopeptide sodium, adding 14.7g of shea butter and 0.3g of ceramide NP under stirring conditions, mixing at 50°C to form a gel, adding 50g of water to the gel and stirring to form an emulsion, homogenizing under 20KPa conditions to obtain the shea butter composition.

[0033] Example 3 A method for preparing a shea butter composition includes the following steps: mixing 14.7g of glycerol and 0.3g of Bacillus subtilis lipopeptide sodium, adding 34.5g of shea butter and 0.5g of ceramide NP under stirring conditions, mixing at 55°C to form a gel, adding 50g of water to the gel and stirring to form an emulsion, and homogenizing under 30KPa conditions to obtain the shea butter composition.

[0034] Example 4 A method for preparing a shea butter composition includes the following steps: mixing 5.85g of glycerol and 0.15g of Bacillus subtilis lipopeptide sodium, adding 13.8g of shea butter and 0.2g of ceramide NP under stirring conditions, mixing at 50°C to form a gel, adding 80g of water to the gel and stirring to form an emulsion, homogenizing under 20KPa conditions to obtain the shea butter composition.

[0035] Comparative Example 1 The only difference between the preparation method of the shea butter composition in Comparative Example 1 and that in Example 1 is that lecithin, polyglycerol-10 and oleic acid ester are used instead of sodium subtilis lipopeptide in the preparation process of the shea butter in Comparative Example 1.

[0036] The specific operating steps include: A method for preparing a shea butter composition includes the following steps: mixing 50g of water, 14.7g of glycerol, 0.1g of lecithin, 0.1g of polyglycerol-10 and 0.1g of oleic acid ester, adding 34.5g of shea butter and 0.5g of ceramide NP under stirring conditions, mixing at 50°C to form an emulsion, and homogenizing at 20KPa to obtain the shea butter composition.

[0037] Comparative Example 2 The only difference between the preparation method of the shea butter composition in Comparative Example 2 and that in Example 1 is that Tween-60 and Span 60 are used instead of sodium subtilisin in the preparation of the shea butter in Comparative Example 2.

[0038] The specific operating steps include: A method for preparing a shea butter composition includes the following steps: mixing 50g of water, 14.7g of glycerol, 0.2g of Tween-60 and 0.1g of Span 60, adding 34.5g of shea butter and 0.5g of ceramide NP under stirring conditions, mixing at 50°C to form an emulsion, and homogenizing at 20kPa to obtain the shea butter composition.

[0039] Application Effect Study of the Shea Butter Compositions in Examples 1-4 and Comparative Examples 1-2 of this Application The results are shown in Table 1.

[0040] Table 1 The shea butter compositions described in Examples 1-4 and Comparative Examples 1-2 of this application were prepared into 5% shea butter emulsions, and 0.5% phenoxyethanol was added as a preservative. The moisturizing effect and the transdermal penetration effect represented by phenoxyethanol were tested, and the results are shown in Table 2.

[0041] Transdermal permeability test: Prepared isolated porcine skin was taken, thawed naturally, and its integrity was checked. It was then naturally fixed in a modified Franz diffusion cell (effective transdermal area 0.65 cm²). 2 At the diffusion interface (with a receiving liquid volume of 5 ml), the stratum corneum of the skin is fixed upward between the drug supply pool and the receiving pool. Physiological saline is added to the receiving pool as the receiving liquid to ensure that the receiving liquid is in full contact with the inner surface of the skin. The water bath is circulated at (37±0.2)℃. After the temperature is constant, 2.0 ml of sample solution is added to the drug supply pool and stirred at a constant speed of 200 r / min. 1.0 ml of receiving liquid is taken at 1 h, 2 h, 4 h, 6 h, and 8 h respectively. At the same time, the same volume of receiving liquid at the same temperature is added and air bubbles are removed. After the receiving liquid is dried, 200 μl of 50% methanol is added to reconstitute it. The mixture is centrifuged (12000 r / min) for 4 min, and the supernatant is taken. The phenoxyethanol content is determined by HPLC. The cumulative drug permeation per unit area (Q) is calculated according to formula (1).

[0042] Q = (V × C) n +∑V s ×C n -1) / A (1) Where: Q is the cumulative drug permeation per unit area; A is the effective transdermal absorption area; V is the volume of the receiving chamber; V s C is the sampling volume; n C represents the drug concentration in the receiving solution measured at the nth sampling point. n-1 The concentration of the drug in the receiving liquid measured at the (n-1)th sampling point.

[0043] Table 2 Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A shea butter composition, characterized in that, The ingredients include the following weight percentages: shea butter 0.1-35%, ceramide 0.01-0.5%, sodium subtilis lipopeptide 0.01-0.3%, glycerin 10-50%, and water as the balance.

2. The shea butter composition according to claim 1, characterized in that, The mass ratio of the shea butter to the ceramide is (50-200):

1.

3. The shea butter composition according to claim 1, characterized in that, The sum of the amounts of shea butter and ceramide used is in a mass ratio of (50-120):1 to the amount of Bacillus subtilis lipopeptide sodium.

4. The shea butter composition according to claim 1, characterized in that, The total mass ratio of the shea butter and ceramide to the total mass ratio of the subtilis lipopeptide sodium and glycerol is 7:3-1:

9.

5. The shea butter composition according to claim 1, characterized in that, The ceramide is ceramide NP.

6. A method for preparing the shea butter composition according to any one of claims 1-5, characterized in that, Includes the following steps: Glycerin and sodium subtilis lipopeptide were mixed, and shea butter and ceramide were added under stirring to form a gel. Water was added to the gel and stirred to form an emulsion. After homogenization, the shea butter composition was obtained.

7. The method for preparing the shea butter composition according to claim 6, characterized in that, The temperature at which the gel is formed is 50-60℃, and the homogenization is carried out under a pressure of 15-30KPa.

8. A cosmetic product, characterized in that, This includes the shea butter composition according to any one of claims 1-5 or the shea butter composition obtained by the preparation method according to any one of claims 6-7.

9. The cosmetic product according to claim 8, characterized in that, The amount of the shea butter composition added is 1-20% of the cosmetic mass.

10. The cosmetic product according to claim 8, characterized in that, The cosmetics include toners, lotions, creams, shampoos, shower gels, or facial cleansers.

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