A cosmetic product with a high content of ceramide and its preparation method

Abstract

The present invention belongs to the technical field of cosmetics, and discloses a cosmetic with a high content of ceramide and a preparation method thereof. The cosmetic comprises an aqueous phase component and an oil phase component. The oil phase component includes ceramide, oil, stabilizer and PEG emulsifier. The oil includes silicone oil and squalane. The stabilizer includes methyl palmitate. The mass ratio of silicone oil to squalane is 3-4:1, the mass ratio of ceramide to methyl palmitate is 11-15:1, and the addition amount of ceramide in the cosmetic is ≤15 wt%. By utilizing the property that ceramide is prone to precipitate in silicone oil-based oils and is easily soluble in synthetic oils, and the higher the polarity of the synthetic oil, the better the solubility of ceramide, the present invention adopts a specific oil phase component compounding system, so that ceramide exists in a critical stable state in the final product, endowing the product with a matte and high-class appearance and a unique smooth and delicate application feel, and the use feel is fresh and non-greasy.

Description

Technical Field

[0001] The present invention belongs to the technical field of cosmetics, and particularly relates to a cosmetic with a high content of ceramide and a preparation method thereof. Background Art

[0002] The smooth, bright, moist and firm state of the skin is closely related to the skin's barrier system, and the skin's barrier function is maintained and supported by a healthy stratum corneum. Ceramide is an important component of the lipids in the stratum corneum of the skin, accounting for about 50% of the intercellular lipid components. It can lock in the moisture of the skin, promote skin self-repair and regulate cell expression, and has powerful effects of moisturizing, anti-allergy and repair. Ceramide E is similar in structure and function to ceramide. The chemical name of ceramide E is cetyl-PG hydroxyethyl palmitamide, and its appearance is white or off-white powder. It is a ceramide analogue. With age, the ceramide in the epidermis will be lost, and the drastic changes in the external environment will also generate corresponding skin stress. Exogenous supplementation of ceramide or ceramide analogue has significant effects on maintaining the skin barrier function and steady-state structure.

[0003] Due to the large molecular weight and difficult solubility of ceramide, when high-content ceramide is added to cosmetics, problems such as precipitation or rough and unstable product bodies are likely to occur. In order to add a relatively high content of ceramide, most of the cosmetics on the market adopt a water-in-oil system. Although the cosmetics with a water-in-oil system have high moisturizing properties, they have the problem of sticky skin feeling, and it is difficult to solve the contradiction between consumers' pursuit of a fresh texture of cosmetics and the need for high-content polar oils to dissolve high-content ceramide E.

[0004] Therefore, there is an urgent need to provide a cosmetic with a fresh and non-sticky skin feeling and a high content of ceramide to meet the actual market demand. Summary of the Invention

[0005] The present invention aims to solve at least one of the technical problems existing in the above-mentioned prior art. For this reason, the present invention provides a cosmetic with a high content of ceramide and a preparation method thereof. The addition amount of ceramide in the cosmetic can be as high as 15 wt%, and at the same time, the cosmetic has good stability and a fresh and non-sticky skin feeling when used.

[0006] The first aspect of the present invention provides a cosmetic, which includes an aqueous phase component and an oil phase component. The oil phase component includes ceramide, oil, stabilizer and PEG emulsifier. The oil includes silicone oil and squalane. The stabilizer includes methyl palmitate. The mass ratio of the silicone oil to the squalane is 3-4:1. The mass ratio of the ceramide to the methyl palmitate is 11-15:1. The addition amount of the ceramide in the cosmetic ≤ 15 wt%.

[0007] According to some embodiments of the present invention, the mass ratio of the ceramide to the methyl palmitate is 12 - 14:1.

[0008] According to some embodiments of the present invention, the mass ratio of the ceramide to the methyl palmitate is 40:3.

[0009] According to some embodiments of the present invention, the addition amount of the ceramide in the cosmetic is 0.11 - 15 wt%.

[0010] According to some embodiments of the present invention, the ceramide is cetyl - PG - hydroxyethyl palmitamide.

[0011] According to some embodiments of the present invention, the squalane is plant - derived squalane.

[0012] According to some embodiments of the present invention, the silicone oil includes at least one of cyclopentasiloxane, polydimethylsiloxane, octyl polymethylsiloxane, polydimethylsiloxanol, phenyl trimethylsiloxane, polydimethylsiloxane / vinyl polydimethylsiloxane cross - linked polymer, C30 - 45 alkyl cetearyl polydimethylsiloxane cross - linked polymer, and polysiloxane - 11.

[0013] According to some embodiments of the present invention, the PEG - type emulsifier includes PEG - 10 polydimethylsiloxane and / or PEG - 3 polydimethylsiloxane.

[0014] According to some embodiments of the present invention, the aqueous phase component includes polyols and inorganic salts.

[0015] According to some embodiments of the present invention, the polyols include at least one of glycerol, butanediol, 1,3 - butanediol, 1,3 - propanediol, dipropylene glycol, 1,2 - pentanediol, and 1,2 - hexanediol.

[0016] According to some embodiments of the present invention, the inorganic salts include sodium chloride and / or magnesium sulfate.

[0017] According to some embodiments of the present invention, the addition amount of the polyols in the cosmetic is 5 - 20 wt%.

[0018] According to some embodiments of the present invention, the addition amount of the inorganic salts in the cosmetic is 0.5 - 1.5 wt%.

[0019] According to some embodiments of the present invention, the addition amount of the stabilizer in the cosmetic is 0.0075 - 1.125 wt%.

[0020] According to some embodiments of the present invention, the addition amount of the oil in the cosmetic is ≤40 wt%.

[0021] According to some embodiments of the present invention, the addition amount of the grease in the cosmetic is 10-40 wt%.

[0022] According to some embodiments of the present invention, the addition amount of the PEG emulsifier in the cosmetic is ≤ 3 wt%.

[0023] According to some embodiments of the present invention, the addition amount of the PEG emulsifier in the cosmetic is 0.8-3 wt%.

[0024] According to some embodiments of the present invention, the dosage form of the cosmetic includes lotion, essence, cream or mask.

[0025] According to some embodiments of the present invention, the cosmetic further includes at least one of essence, pigment, preservative and skin conditioner.

[0026] According to some embodiments of the present invention, the preservative includes p-hydroxyacetophenone and / or phenoxyethanol.

[0027] According to some embodiments of the present invention, the skin conditioner includes rambutan peel extract and / or soursop fruit extract.

[0028] The second aspect of the present invention provides a preparation method of the above cosmetic, including the following steps:

[0029] Mix the components of the aqueous phase, heat and dissolve them to obtain the aqueous phase components;

[0030] Mix the components of the oil phase, heat and dissolve them to obtain the oil phase components;

[0031] Add the oil phase components to the aqueous phase components, stir, homogenize and emulsify, and then stir and cool down to obtain the cosmetic.

[0032] According to some embodiments of the present invention, during the stirring and cooling process, the material will change from delicate to rough and then become delicate again. After the material becomes delicate again, homogenize and emulsify again.

[0033] According to some embodiments of the present invention, the rotation speed of the homogenization and emulsification is 3000-3500 rpm.

[0034] According to some embodiments of the present invention, in the preparation method of the cosmetic, the specific process of preparing the aqueous phase components is: mix polyol, inorganic salt and water, heat to 75-85 °C, and dissolve evenly to obtain the aqueous phase components.

[0035] According to some embodiments of the present invention, in the preparation method of the cosmetic, the specific process of preparing the oil phase components is:

[0036] After mixing ceramide, oil, stabilizer and PEG emulsifier, heat it to 75 - 85 °C and dissolve evenly to obtain the oil phase component.

[0037] According to some embodiments of the present invention, in the preparation method of the cosmetic, the specific process of emulsification is as follows:

[0038] Under the stirring conditions of 75 - 85 °C and 30 - 60 rpm, slowly add the oil phase component to the water phase component at a rate just enough to wrap it. After the addition is completed, continue stirring for 5 - 10 min, and then homogenize and emulsify for 3 - 8 min;

[0039] Stir and cool down to 50 - 55 °C. The material will experience a process of changing from delicate to rough and then back to delicate. After the material becomes delicate again, homogenize and emulsify for 1 - 3 min. At this time, the material has a delicate matte appearance, and the oil - water mixture is obtained.

[0040] According to some embodiments of the present invention, in the preparation method of the cosmetic, it further includes the step: adding at least one component of fragrance, pigment, preservative, and skin conditioner to the obtained oil - water mixture, and cooling it to ≤38 °C to obtain the cosmetic.

[0041] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0042] The cosmetic of the present invention has a high content of ceramide, and the addition amount can be as high as 15 wt%, and the system has good stability. It can effectively maintain the barrier function of the stratum corneum of the skin and has the effects of moisturizing, repairing, soothing, and anti - inflammation.

[0043] The present invention utilizes the property that ceramide is easy to precipitate in silicone - based oils and easy to dissolve in synthetic oils, and the higher the polarity of the synthetic oil, the better the solubility of ceramide. By adopting a specific oil phase component compounding system, ceramide exists in a critical stable state in the final product, that is, a critical stable state between precipitation and non - precipitation, endowing the product with a matte and high - class appearance and a unique smooth and delicate spreading skin feel. The use feel is fresh and non - sticky, turning the disadvantageous chemical property that ceramide E is not easily soluble in the silicone oil system into the unique texture advantage of the final product.

[0044] The present invention uses a mixture of silicone oil and squalane in a specific ratio as the oil, mixes ceramide and methyl palmitate in a specific ratio, and uses a suitable PEG emulsifier in combination. Without using polar synthetic oils, it is beneficial to formulate a cosmetic with a fresh and moisturizing use feel, meeting the use needs of consumers. Description of the Drawings

[0045] The following further describes the present invention with reference to the drawings and embodiments.

[0046] Figure 1 are the polarized light microscope images of the samples prepared in Example 2 and Comparative Example 1;

[0047] Figure 2 are the polarized light microscope images of the samples prepared in Example 2, Comparative Example 2 and Comparative Example 3;

[0048] Figure 3 is the appearance diagram of the samples prepared in Example 2 and Comparative Example 4;

[0049] Figure 4 are the polarized light microscope images of the samples prepared in Example 2, Comparative Example 5 and Comparative Example 6;

[0050] Figure 5 are the polarized light microscope images of the samples prepared in Example 2 and Example 4;

[0051] Figure 6 is the polarized light microscope image of the sample prepared in Example 2. Detailed implementation manners

[0052] To make the technical solutions of the present invention clearer and more understandable to those skilled in the art, the following examples are listed for illustration. It should be noted that the following examples do not limit the scope of protection required by the present invention.

[0053] Unless otherwise specified, the raw materials, reagents, and devices used in the following examples can be obtained from conventional commercial channels or can be obtained by known existing methods.

[0054] Examples 1-3

[0055] A cosmetic product with a high content of ceramide E provided by Examples 1-3, the components and their contents are shown in Table 1, and the unit of the data in Table 1 is wt%.

[0056] Table 1 Components and contents of Examples 1-3

[0057]

[0058]

[0059] A preparation method of a cosmetic product with a high content of ceramide E provided by Example 1 includes the following steps

[0060] S1. Prepare the aqueous phase (Phase A): According to the contents in Table 1, mix the components of Phase A, heat up to 75°C, dissolve evenly, and set aside;

[0061] S2. Prepare the oil phase (Phase B): According to the contents in Table 1, mix the components of Phase B, heat up to 75°C, dissolve evenly, and set aside;

[0062] S3. Under the stirring conditions of 75 °C and 30 rpm, slowly add the oil phase to the water phase at a rate just sufficient to completely enclose it. After the addition is complete, stir for 5 min at a stirring rate of 30 rpm, and then perform homogeneous emulsification at a rotational speed of 3000 rpm for 3 min;

[0063] S4. Stir and cool the material after homogeneous emulsification in S3 to 50 °C, then add phase C, stir evenly, cool to 38 °C, and then discharge the product.

[0064] A method for preparing a cosmetic with a high content of ceramide E provided in Example 2 includes the following steps

[0065] S1. Prepare the water phase (phase A): Mix the components of phase A according to the content in Table 1, heat up to 80 °C, dissolve evenly, and set aside;

[0066] S2. Prepare the oil phase (phase B): Mix the components of phase B according to the content in Table 1, heat up to 80 °C, dissolve evenly, and set aside;

[0067] S3. Under the stirring conditions of 80 °C and 45 rpm, slowly add the oil phase to the water phase at a rate just sufficient to completely enclose it. After the addition is complete, stir for 8 min at a stirring rate of 45 rpm, and then perform homogeneous emulsification at a rotational speed of 3000 rpm for 6 min;

[0068] S4. Stir and cool the material after homogeneous emulsification in S3 to 52 °C, then add phase C, stir evenly, cool to 35 °C, and then discharge the product.

[0069] A method for preparing a cosmetic with a high content of ceramide E provided in Example 3 includes the following steps

[0070] S1. Prepare the water phase (phase A): Mix the components of phase A according to the content in Table 1, heat up to 85 °C, dissolve evenly, and set aside;

[0071] S2. Prepare the oil phase (phase B): Mix the components of phase B according to the content in Table 1, heat up to 85 °C, dissolve evenly, and set aside;

[0072] S3. Under the stirring conditions of 85 °C and 60 rpm, slowly add the oil phase to the water phase at a rate just sufficient to completely enclose it. After the addition is complete, stir for 10 min at a stirring rate of 60 rpm, and then perform homogeneous emulsification at a rotational speed of 3000 rpm for 8 min;

[0073] S4. Stir and cool the material after homogeneous emulsification in S3 to 55 °C, then add phase C, stir evenly, cool to 30 °C, and then discharge the product.

[0074] Example 4

[0075] Example 4 provides a cosmetic product with a high content of ceramide E. The components and their contents are the same as those in Example 2, and the preparation method is different from that in Example 2. The difference lies in that Example 4 performs secondary homogenization emulsification.

[0076] The preparation method of a cosmetic product with a high content of ceramide E provided in Example 4 includes the following steps

[0077] S1. Prepare the aqueous phase (Phase A): According to the contents in Table 1, mix the components of Phase A, heat up to 80 °C, dissolve evenly, and set aside for use;

[0078] S2. Prepare the oil phase (Phase B): According to the contents in Table 1, mix the components of Phase B, heat up to 80 °C, dissolve evenly, and set aside for use;

[0079] S3. Under the stirring condition of 80 °C and 45 rpm, slowly add the oil phase to the aqueous phase at a rate such that it is just wrapped in. After the addition is completed, stir for 8 min at a stirring rate of 45 rpm, and then perform homogenization emulsification at a rotation speed of 3000 rpm for 6 min;

[0080] S4. Stir and cool the material after homogenization emulsification in S3 to 52 °C. At this time, the material will go through a process from delicate to rough and then back to delicate. After the material becomes delicate again, perform homogenization emulsification at a rotation speed of 3500 rpm for 2 min. At this time, the material has a delicate matte appearance, and an oil-water mixture is obtained;

[0081] S5. Add Phase C to the oil-water mixture, stir evenly, cool to 35 °C, and then discharge.

[0082] Comparative Examples 1 - 7

[0083] A cosmetic product with a high content of ceramide E provided in Comparative Examples 1 - 7. The components and their contents are shown in Table 2, and the unit of the data in Table 2 is wt%.

[0084] Table 2 Components and Contents of Comparative Examples 1 - 7

[0085]

[0086]

[0087] Among them:

[0088] Comparative Example 1: The difference between Comparative Example 1 and Example 2 is that methyl palmitate, a stabilizer, is not added.

[0089] Comparative Example 2: The difference between Comparative Example 2 and Example 2 is that the ratio of ceramide E to methyl palmitate is 10, which is < 40 / 3 defined in the present invention.

[0090] Comparative Example 3: The difference between Comparative Example 3 and Example 2 is that the ratio of ceramide E to methyl palmitate is 20, which is > 40 / 3 defined in the present invention.

[0091] Comparative Example 4: The difference between Comparative Example 4 and Example 2 is that polydimethylsiloxane is replaced by two synthetic oils, isopropyl isostearate and glyceryl trioctanoate / decanoate.

[0092] Comparative Example 5: The difference between Comparative Example 5 and Example 2 is that the ratio of polydimethylsiloxane to squalane is about 2, which is < 3 / 1 defined in the present invention.

[0093] Comparative Example 6: The difference between Comparative Example 6 and Example 2 is that the ratio of polydimethylsiloxane to squalane is about 5, which is > 4 / 1 defined in the present invention.

[0094] Comparative Example 7: The difference between Comparative Example 7 and Example 2 is that the stabilizer methyl palmitate is replaced by palmitic acid.

[0095] The preparation processes of Comparative Examples 1 - 7 are the same as that of Example 2.

[0096] Test Example 1 Stability Test

[0097] The products prepared in Examples 1 - 4 and Comparative Examples 1 - 7 were used as test samples respectively, and were subjected to high temperature / low temperature / light / room temperature / cold and heat cycle tests (the temperatures were 45°C / -15°C / 25°C / 25°C / -15°C - 45°C respectively, and the temperature was changed every 24 h in the cold and heat cycle test). After 3 months, the particle size distribution of the emulsified oil droplets in the samples, whether there was precipitation, the appearance gloss of the samples, the spreading feeling, etc. were monitored to comprehensively evaluate the stability and usability of the samples.

[0098] Model of the laser particle size analyzer used: MASTERSIZER 3000E + SM.

[0099] The stability test results of Examples 1 - 4 are shown in Table 3; the stability test results of Comparative Examples 1 - 7 are shown in Table 4.

[0100] Table 3 Stability Test Results of Examples 1 - 4

[0101]

[0102]

[0103]

[0104] Table 4 Stability Test Results of Comparative Examples 1 - 7

[0105]

[0106]

[0107]

[0108] According to the test results in Table 3 and Table 4, the following conclusions can be analyzed:

[0109] After 3 months of stability testing, the quality indicators of the samples in Examples 1-4 all meet the requirements, with a dense and refreshing skin feel and a delicate matte appearance.

[0110] For Comparative Example 1, compared with Example 2, without adding methyl palmitate, crystals gradually precipitate, the appearance remains matte, but the fineness of the paste then decreases.

[0111] For Comparative Examples 2 and 3, crystals slowly precipitate and the precipitation rate is slower than that of Comparative Example 1.

[0112] The oil phase of Comparative Example 4 is a mixed system of squalane and synthetic oil; ceramide E can exist relatively stably in synthetic oils, but it is difficult to be compatible with PEG emulsifiers that bring a light and refreshing skin feel, the emulsion particle size slowly becomes larger and is out of range, the oil phase aggregates, the oil layer precipitates, and ceramide E in the system cannot be fully dissolved, resulting in the precipitation of a small amount of crystals; ceramide E has good initial solubility in the oil phase of this system, the initial appearance of the sample is smooth and bright, without a matte feeling, and there is no obvious powdery and dense feeling when applied.

[0113] Although the oil phase of Comparative Example 5 is a mixed system of silicone oil and squalane, compared with Example 2, only the content ratio of silicone oil and squalane is different. The difference between Comparative Example 5 and Example 2 is that the ratio of silicone oil / squalane used is 2 / 1, and the mass ratio of squalane in the oil phase is higher than that of Example 2. Ceramide E has good solubility in Comparative Example 5, and no oil phase precipitation and stratification occurred during the stability investigation period (this abnormal problem exists in Comparative Example 4). The initial appearance after emulsification is delicate, but the matte feeling of the sample appearance is not obvious, and it is light and smooth when applied.

[0114] Although the oil phase of Comparative Example 6 is a mixed system of silicone oil and squalane, compared with Example 2, only the content ratio of silicone oil and squalane is different. The difference between Comparative Example 6 and Example 2 is that the ratio of silicone oil / squalane used is 5 / 1, and the mass ratio of squalane in the oil phase is lower than that of Example 2. Initially, the sample appearance is delicate and matte, and the skin feel is dense, but then a small amount of fine particles precipitate, and the matte and fineness decrease.

[0115] In Comparative Example 7, since the stabilizer methyl palmitate is replaced by palmitic acid, adding palmitic acid has a certain stabilizing effect, but crystals still precipitate in the end.

[0116] Test Example 2 Observation of the state of ceramide E in the sample by polarized light microscopy and visual observation of the appearance of the sample

[0117] Model of the polarized light microscope used: OLYMPUS BX53F-P.

[0118] The microstructure of the sample at different time periods was observed using a polarized light microscope to observe the state of ceramide E in the sample. The results are as follows:

[0119] 1. Using a polarized light microscope, observe the state of the samples prepared in Example 2 and Comparative Example 1 at the initial stage at a magnification of 10 times. The results are as Figure 1 shown. In Figure 1 , (a) is the sample prepared in Comparative Example 1, and (b) is the sample prepared in Example 2. From Figure 1 it can be seen that in Comparative Example 1, due to the absence of the stabilizer methyl palmitate, the structure of ceramide E in the sample is larger and the needle-like aggregates are obvious; the crystals of ceramide E in Example 2 are fine and evenly dispersed. Therefore, the skin feel of Example 2 is dense, light, and has better stability.

[0120] 2. Using a polarized light microscope, observe the state of the samples prepared in Example 2, Comparative Example 2, and Comparative Example 3 after storage at -15°C for 3 months and then restored to room temperature at a magnification of 50 times. The results are as Figure 2 shown. In Figure 2 , (a) is the sample prepared in Comparative Example 2, (b) is the sample prepared in Comparative Example 3, and (c) is the sample prepared in Example 2. From Figure 2 it can be seen that the crystal structure of ceramide E in Comparative Example 2 is larger, the crystals of ceramide E in Comparative Example 3 are relatively smaller and denser, and the crystals of ceramide E in Example 2 are fine and evenly dispersed. The results of this microstructure are consistent with the macroscopic stability trend results in Table 3 and Table 4 above.

[0121] 3. Visually observe the appearance of the samples prepared in Example 2 and Comparative Example 4 after one month at room temperature. The results are as Figure 3 shown. In Figure 3 , (a) is the sample prepared in Comparative Example 4, and (b) is the sample prepared in Example 2. From Figure 3 it can be seen that after one month at room temperature, the sample of Example 2 is delicate and has a matte feeling, while the fineness of the sample of Comparative Example 4 has decreased and there is no matte feeling, and the appearance is significantly inferior to that of Example 2.

[0122] 4. Using a polarized light microscope, observe the state of the samples prepared in Example 2, Comparative Example 5, and Comparative Example 6 after storage at room temperature for 2 months at a magnification of 20 times. The results are as Figure 4 shown. In Figure 4Among them, (a) is the sample prepared in Comparative Example 5, (b) is the sample prepared in Comparative Example 6, and (c) is the sample prepared in Example 2. From Figure 4 As can be seen, the crystal structure of ceramide E in Comparative Example 5 is relatively small and dense, the crystals of ceramide E in Comparative Example 6 are significantly aggregated, and the crystals of ceramide E in Example 2 are fine and evenly dispersed. The results of this microstructure are consistent with the results of the macroscopic stability trends in Table 3 and Table 4 above.

[0123] 5. Using a polarized light microscope, observe the state of the samples prepared in Example 2 and Example 4 after being stored at room temperature for 2 months at a magnification of 20 times. The results are as Figure 5 shown. In Figure 5 Among them, (a) is the sample prepared in Example 4, and (b) is the sample prepared in Example 2. From Figure 5 As can be seen, the crystal form of ceramide E in Example 4 is slightly finer than that in Example 2, which is because secondary homogenization and emulsification were carried out in Example 4, further improving the fineness of the material.

[0124] 6. Using a polarized light microscope, observe the state of the sample prepared in Example 2 at the initial stage and after 3 months of high-temperature stability investigation at magnifications of 20 and 50 times respectively. The results are as Figure 6 shown. In Figure 6 Among them, (a) is the state of the sample prepared in Example 2 at the initial stage under a 20-fold magnification, (b) is the state of the sample prepared in Example 2 after 3 months of high-temperature stability investigation under a 20-fold magnification, (c) is the state of the sample prepared in Example 2 at the initial stage under a 50-fold magnification, and (d) is the state of the sample prepared in Example 2 after 3 months of high-temperature stability investigation under a 50-fold magnification. From Figure 6 As can be seen, in the sample prepared in Example 2, ceramide E exists uniformly and stably in the system, in a critically stable state, without agglomeration, precipitation, or stratification, thus bringing a unique appearance and skin feel of matte, dense, and light, achieving a technical breakthrough in innovative dosage form efficacy cosmetics.

[0125] The above has specifically described the preferred embodiments of the present invention, but the present invention is not limited to the described embodiments. Those skilled in the art can also make various equivalent variations or substitutions without departing from the spirit of the present invention, and these equivalent variations or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A cosmetic, characterized in that, The cosmetic product comprises an aqueous phase component and an oil phase component. The oil phase component includes ceramide, oils and fats, a stabilizer, and a PEG-based emulsifier. The oils and fats include silicone oil and squalane. The stabilizer includes methyl palmitate. The mass ratio of the silicone oil to the squalane is 3 - 4:

1. The mass ratio of the ceramide to the methyl palmitate is 11 - 15:

1. The addition amount of the ceramide in the cosmetic product is ≤15 wt%. The ceramide is cetyl-PG-hydroxyethyl palmitamide; The silicone oil includes at least one of cyclopentasiloxane, polydimethylsiloxane, octylpolymethylsiloxane, polydimethylsiloxanol, phenyltrimethylsiloxane, polydimethylsiloxane / vinylpolydimethylsiloxane cross-linked polymer, C30 - 45 alkyl cetearyl dimethicone cross-linked polymer, and polysiloxane-11; The PEG-based emulsifier includes PEG-10 polydimethylsiloxane and / or PEG-3 polydimethylsiloxane.

2. The cosmetic according to claim 1, characterized in that, The addition amount of the ceramide in the cosmetic product is 0.11 - 15 wt%.

3. The cosmetic according to claim 1, characterized in that, The aqueous phase component includes polyhydric alcohols and inorganic salts.

4. The cosmetic according to claim 3, characterized in that, The polyhydric alcohols include at least one of glycerol, butanediol, 1,3-butanediol, 1,3-propanediol, dipropylene glycol, 1,2-pentanediol, and 1,2-hexanediol; the inorganic salts include sodium chloride and / or magnesium sulfate.

5. The cosmetic according to claim 1, characterized in that, The addition amount of the oils and fats in the cosmetic product is ≤40 wt%; the addition amount of the PEG-based emulsifier in the cosmetic product is ≤3 wt%.

6. The cosmetic according to any one of claims 1-5, characterized in that, The dosage form of the cosmetic product includes lotion, essence, cream, or facial mask.

7. The preparation method of the cosmetic according to any one of claims 1-5, characterized in that, It includes the following steps: Mix the components of the aqueous phase, heat and dissolve them to obtain the aqueous phase component; Mix the components of the oil phase, heat and dissolve them to obtain the oil phase component; Add the oil phase component to the aqueous phase component, stir, homogenize and emulsify, and then stir and cool down to obtain the cosmetic product.

8. The preparation method according to claim 7, characterized in that, During the process of stirring and cooling down, the material will experience a process of changing from delicate to rough and then back to delicate again. After the material changes back to delicate again, homogenize and emulsify it again.

Images