Skin care composition with pearlescent appearance and preparation method thereof

Abstract

The invention discloses a skin care composition with pearlescent appearance and a preparation method thereof. The skin care composition comprises a solubilizing phase, a water phase and a thickening phase, the solubilizing phase comprises polyol, a solubilizing agent and capryloyl salicylic acid, the polyol comprises dihydric alcohol, the feeding mass ratio of the dihydric alcohol to the solubilizing agent to the capryloyl salicylic acid is (3-6): (0.4-2): 1, and the solubilizing agent is selected from one or a combination of more of octyldodecanol polyether-16, PEG-40 hydrogenated castor oil and PEG-60 hydrogenated castor oil; the preparation method of the skin care composition comprises the following steps: heating and dissolving the components in the solubilizing phase until the components are in a transparent state to obtain a first phase; uniformly mixing the water phase and the thickening phase to obtain a second phase; adding the first phase into the second phase, and uniformly mixing; the skin care composition avoids unnecessary mineral substance introduction, reduces heavy metal and other hazard risks, not only has glittering and translucent appearance, but also has moisturizing and acne removing effects, and can be applied to pearlescent toner, pearlescent essence and other products.

Description

Technical Field

[0001] The invention relates to the field of daily chemical products, in particular to a skin care composition with pearlescent appearance and a preparation method thereof. Background Art

[0002] The conventional toners and essences we use in daily life are usually transparent or semi-transparent, milky white in appearance, and have average visual effects. Some people think of developing a product with a pearlescent effect to attract consumers' attention. Usually, essences with a pearlescent appearance often achieve special visual effects by adding mica-based pearlescent powder. However, mica is generally used as a colorant in cosmetics. In addition to increasing the brightness of cosmetics, it will not be absorbed by the skin to produce additional effects. However, whether it is natural synthetic mica or artificial synthetic mica, there may be heavy metals or free fluorine residues, which will cause invisible damage to our skin and even health. Summary of the invention

[0003] The purpose of the present invention is to overcome one or more deficiencies in the prior art and provide a new composition having both pearlescent appearance and moisturizing and anti-acne effects.

[0004] The present invention also provides a method for preparing the composition having both pearlescent appearance and moisturizing and anti-acne effects.

[0005] In order to achieve the above object, a technical solution adopted by the present invention is:

[0006] A skin care composition having a pearlescent appearance, the skin care composition comprising a solubilizing phase, an aqueous phase and a thickening phase;

[0007] The solubilizing phase comprises a polyol, a solubilizing agent, and octanoyl salicylic acid, the polyol comprises a diol, the feeding mass ratio of the diol, the solubilizing agent, and the octanoyl salicylic acid is 3-6:0.4-2:1, and the solubilizing agent is a combination of one or more selected from octyl dodecanol polyether-16, PEG-40 hydrogenated castor oil, and PEG-60 hydrogenated castor oil;

[0008] The preparation method of the skin care composition comprises:

[0009] Heat and dissolve the components in the solubilization phase until they are transparent to obtain a first phase;

[0010] Mixing the aqueous phase and the thickening phase to obtain a second phase;

[0011] Add the first phase into the second phase and mix well.

[0012] According to some preferred and specific aspects of the present invention, in the skin care composition, the capryloyl salicylic acid accounts for 0.1%-3%, further 0.2%-1.5%, calculated by mass percentage.

[0013] According to some preferred aspects of the present invention, the mass ratio of the diol, the solubilizer and the octanoylsalicylic acid is 3-6:0.4-1.5:1.

[0014] In some embodiments of the present invention, during the preparation of the skin care composition, the temperature of the heating for dissolution is 40-55°C.

[0015] In some embodiments of the present invention, during the preparation of the skin care composition, the first phase is gradually added to the second phase in batches or according to a preset flow rate.

[0016] According to the present invention, the capryloyl salicylic acid is present in the skin care composition in the form of plate-like crystals.

[0017] In some embodiments of the present invention, the diol is a combination of one or more selected from methyl propylene glycol, butylene glycol, dipropylene glycol, and 1,3-propylene glycol.

[0018] In some embodiments of the present invention, in the skin care composition, the polyol accounts for 1%-10%, further 1%-5%, by weight.

[0019] In some embodiments of the present invention, the thickening phase includes a thickener. In terms of mass percentage, the thickener accounts for 0.1%-1.0%, and further 0.1%-0.6% in the skin care composition.

[0020] According to some preferred and specific aspects of the present invention, the thickener comprises polyacrylate crosspolymer-6.

[0021] In some embodiments of the present invention, the aqueous phase comprises water, a humectant, and optionally a chelating agent and a preservative.

[0022] Furthermore, the moisturizing agent includes glycerin.

[0023] Furthermore, in the skin care composition, the moisturizer accounts for 3%-12%, the chelating agent accounts for 0-0.2%, and the preservative accounts for 0-0.5%, calculated by mass percentage.

[0024] In some embodiments of the present invention, the chelating agent may be disodium EDTA.

[0025] Another technical solution provided by the present invention is a method for preparing the above-mentioned skin care composition with pearlescent appearance, the preparation method comprising:

[0026] (1) mixing and dissolving the components in the solubilization phase at 40-55° C. until a transparent state is obtained to obtain a first phase;

[0027] (2) mixing the aqueous phase and the thickening phase to obtain a second phase;

[0028] (3) Adding the first phase into the second phase and mixing well to obtain the skin care composition.

[0029] Another technical solution provided by the present invention is the use of the above-mentioned skin care composition with pearlescent appearance in pearlescent toner and pearlescent essence products.

[0030] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0031] Based on the shortcomings or defects of existing products with pearlescent effects using mica, the present invention innovatively provides a new type of product that uses octanoylsalicylic acid to produce pearlescent effects, avoids the introduction of unnecessary minerals, and reduces the risk of heavy metal hazards. Specifically, the present invention innovatively designs the formula and process so that octanoylsalicylic acid can be stably present in the formula system and exists in the system in the form of flaky crystals. When light is irradiated on the surface of the thin sheet in the form of the flaky crystals, multiple reflections are generated to form a pearl luster with interference light characteristics, thereby giving the composition an excellent pearlescent visual effect. In addition, the product prepared using octanoylsalicylic acid Skin care products with pearlescent effects not only have a sparkling appearance, but also have moisturizing and acne-removing effects. They can be applied to products such as pearlescent toner and pearlescent essence. Furthermore, capryloyl salicylic acid can penetrate into the deep layers of the pores along the sebaceous glands, dissolve the constituent substances between the keratin, promote the shedding of the stratum corneum, prevent the old keratin that does not fall off normally from blocking the pores and forming acne, and can shrink the enlarged pores, promote the rapid renewal of epidermal cells, and restore the skin to smoothness and fineness. Capryloyl salicylic acid can reorganize the epidermal cell tissue and stimulate cell renewal. It is used to treat acne and prevent skin aging, improve skin color, reduce wrinkles, and make the face or body bright and smooth. Therefore, capryloyl salicylic acid brings a unique appearance to the product while having certain effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is an optical microscope image of the skin care composition prepared in Example 1 of the present invention;

[0033] Figure 2 A comparison chart of the pearlescent effects of the skin care composition prepared in Example 1 of the present invention and the skin care composition without adding capryloyl salicylic acid;

[0034] Figure 3 This is a sample photo of the composition prepared in Comparative Example 1;

[0035] Figure 4 This is a sample photo of the composition prepared in Comparative Example 2;

[0036] Figure 5 This is a sample photo of the composition prepared in Comparative Example 3;

[0037] Figure 6 This is a sample photo of the composition prepared in Comparative Example 4;

[0038] Figure 7 This is a test result diagram of the moisturizing effect of the skin care composition prepared in Example 1 of the present invention;

[0039] Figure 8 This is a test result diagram of the anti-acne effect of the skin care composition prepared in Example 1 of the present invention. DETAILED DESCRIPTION

[0040] The above scheme is further described below in conjunction with specific embodiments; it should be understood that these embodiments are used to illustrate the basic principles, main features and advantages of the present invention, and the present invention is not limited to the scope of the following embodiments; the implementation conditions adopted in the embodiments can be further adjusted according to specific requirements, and the implementation conditions not specified are usually the conditions in conventional experiments.

[0041] Unless otherwise specified in the following examples, all raw materials are commercially available or prepared by conventional methods in the art.

[0042] Octyldodecanol polyether-16, purchased from NIHON EMULSION CO., LTD, brand name EMALEX OD-16;

[0043] PEG-40 hydrogenated castor oil, purchased from BASF, brand name CREMOPHOR RH40;

[0044] PEG-60 hydrogenated castor oil, purchased from BASF, brand RH 60;

[0045] Polyacrylate crosspolymer-6, available from SEPPIC SA, brand name SEPIMAX ZEN.

[0046] Example 1

[0047] This example provides a skin care composition with a pearlescent appearance and a preparation method thereof. The formula of the skin care composition with a pearlescent appearance is shown in Table 1.

[0048] Table 1

[0049]

[0050]

[0051] The method for preparing the skin care composition having a pearlescent appearance comprises:

[0052] (1) Mix and dissolve the components in the solubilization phase at 45±5°C until they become transparent to obtain the first phase;

[0053] (2) mixing the aqueous phase and the thickening phase to obtain a second phase;

[0054] (3) Slowly add the first phase into the second phase and mix well to obtain a skin care composition with a pearlescent appearance.

[0055] Example 2

[0056] This example provides a skin care composition with a pearlescent appearance and a preparation method thereof. The formula of the skin care composition with a pearlescent appearance is shown in Table 2.

[0057] Table 2

[0058]

[0059] The preparation method of the skin care composition with pearlescent appearance is the same as that of Example 1.

[0060] Example 3

[0061] This example provides a skin care composition with a pearlescent appearance and a preparation method thereof. The formula of the skin care composition with a pearlescent appearance is shown in Table 3.

[0062] Table 3

[0063]

[0064]

[0065] The preparation method of the skin care composition with pearlescent appearance is the same as that of Example 1.

[0066] Example 4

[0067] This example provides a skin care composition with a pearlescent appearance and a preparation method thereof. The formula of the skin care composition with a pearlescent appearance is shown in Table 4.

[0068] Table 4

[0069]

[0070] The preparation method of the skin care composition with pearlescent appearance is the same as that of Example 1.

[0071] Example 5

[0072] This example provides a skin care composition with a pearlescent appearance and a preparation method thereof. The formula of the skin care composition with a pearlescent appearance is shown in Table 5.

[0073] Table 5

[0074]

[0075]

[0076] The preparation method of the skin care composition with pearlescent appearance is the same as that of Example 1.

[0077] Example 6

[0078] This example provides a skin care composition with a pearlescent appearance and a preparation method thereof. The formula of the skin care composition with a pearlescent appearance is shown in Table 6.

[0079] Table 6

[0080]

[0081] The preparation method of the skin care composition with pearlescent appearance is the same as that of Example 1.

[0082] Example 7

[0083] This example provides a skin care composition with a pearlescent appearance and a preparation method thereof. The formula of the skin care composition with a pearlescent appearance is shown in Table 7.

[0084] Table 7

[0085]

[0086]

[0087] The preparation method of the skin care composition with pearlescent appearance is the same as that of Example 1.

[0088] Comparative Examples 1-3

[0089] These comparative examples provide a composition and a preparation method thereof. The formula of the composition is shown in Table 8.

[0090] Table 8

[0091]

[0092] The preparation method of the composition is the same as that of Example 1.

[0093] Comparative Example 4

[0094] This comparative example provides a composition and a preparation method thereof. The formula of the composition is the same as that of Example 1, and the only difference is that: during the preparation process, the components in the solubilizing phase are not pre-mixed to a transparent state; specifically, the preparation method is: mixing the aqueous phase and the thickening phase, and then adding methylpropanediol, octyldodecyl polyether-16 and capryloylsalicylic acid, and mixing to obtain the composition.

[0095] Performance Testing

[0096] (1) The optical microscope image of the skin care composition prepared in Example 1 of the present invention is shown in FIG. Figure 1 As shown, it can be clearly seen that plate-like crystals exist in the system.

[0097] (2) Sample photos of the skin care composition prepared in Example 1 of the present invention are shown in Figure 2 As shown on the left, it has an obvious pearlescent effect. At the same time, the sample without adding octanoyl salicylic acid (basically the same as Example 1, the only difference is that the octanoyl salicylic acid is removed) is shown in FIG. Figure 2 Shown on the right, there is no pearlescent effect at all.

[0098] (3) Sample photos of the compositions prepared in Comparative Examples 1-4 are shown in Figures 3 to 6 As shown;

[0099] in, Figure 3 This is a sample photo of the composition prepared in Comparative Example 1. By comparison, it can be seen that when the solubilizer octyl dodecanol polyether-16 is not added, capryloyl salicylic acid agglomerates and precipitates;

[0100] Figure 4 The sample photo of the composition prepared in Comparative Example 2 shows that when the ratio of octyl dodecanol polyether-16 to octyl salicylic acid is unbalanced, the content of octyl salicylic acid is more than three times that of octyl dodecanol polyether-16, and octyl salicylic acid in the prepared sample has obvious precipitation phenomenon;

[0101] Figure 5 This is a sample photo of the composition prepared in Comparative Example 3. By comparison, it can be seen that when the ratio of octyl dodecanol polyether-16 to octyl salicylic acid is unbalanced, the content of octyl dodecanol polyether-16 is four times that of octyl salicylic acid, and octyl salicylic acid precipitates in the form of needle-shaped crystals, and the pearlescent effect cannot be formed;

[0102] Figure 6 This is a sample photo of the composition prepared in Comparative Example 4. Although the formula is the same as that in Example 1, the solubilizing phase is not pre-dissolved uniformly during the preparation process, and precipitation occurs after practice, and a uniform pearlescent effect cannot be formed. Capryloylsalicylic acid is precipitated in particles.

[0103] (4) The skin care composition obtained in Example 1 was tested for moisturizing performance

[0104] Test method:

[0105] 1. After cleaning the test area (cheek area) with the designated cleanser, leave it in a constant humidity and temperature environment for 10 minutes;

[0106] 2. Use Corneometer CM 825 to measure the moisture content of the stratum corneum before use, after 1 week and 2 weeks of use;

[0107] 3. After cleansing in the morning and evening, apply appropriate amount of sample to the test area and gently massage until completely absorbed;

[0108] Test results see Figure 7 As shown, compared with before using the sample, the moisture content of the stratum corneum of the skin increased significantly after using the test sample for 1 week, increasing by about 41.35%;

[0109] Compared with before using the sample, the moisture content of the stratum corneum of the skin increased significantly after using the test sample for 2 weeks, by about 54.76%;

[0110] The above results show that the skin care composition of the present invention not only has a pearlescent effect but also has an excellent moisturizing effect.

[0111] (5) The skin care composition obtained in Example 1 was subjected to an acne removal test

[0112] Test method:

[0113] 1. After cleaning the test area (cheek area) with the designated cleanser, leave it in a constant humidity and temperature environment for 10 minutes;

[0114] 2. Use VISIA7 professional skin image analysis system detector to measure acne skin pictures before and after 1 week of use;

[0115] 3. After cleansing in the morning and evening, apply appropriate amount of sample to the test area and gently massage until completely absorbed;

[0116] Test results see Figure 8 As shown, after using the product of Example 1 for 7 days, facial acne improved. The above results show that the skin care composition of the present invention not only has a pearlescent effect, but also has an obvious acne-removing effect.

[0117] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

[0118] The endpoints and any values ​​of the ranges disclosed in this article are not limited to the precise ranges or values, and these ranges or values ​​should be understood to include values ​​close to these ranges or values. For numerical ranges, the endpoint values ​​of each range, the endpoint values ​​of each range and the individual point values, and the individual point values ​​can be combined with each other to obtain one or more new numerical ranges, which should be considered as specifically disclosed in this article.

Claims

1. A skin care composition having a pearlescent appearance, characterized in that: The skin care composition comprises a solubilizing phase, an aqueous phase and a thickening phase; The solubilizing phase comprises a polyol, a solubilizing agent, and octanoyl salicylic acid, the polyol comprises a diol, the feeding mass ratio of the diol, the solubilizing agent, and the octanoyl salicylic acid is 3-6:0.4-2:1, and the solubilizing agent is a combination of one or more selected from octyl dodecanol polyether-16, PEG-40 hydrogenated castor oil, and PEG-60 hydrogenated castor oil; The preparation method of the skin care composition comprises: Heat and dissolve the components in the solubilization phase until they are transparent to obtain a first phase; Mixing the aqueous phase and the thickening phase to obtain a second phase; Add the first phase into the second phase and mix well.

2. The skin care composition having a pearlescent appearance according to claim 1, characterized in that In terms of mass percentage, in the skin care composition, the capryloyl salicylic acid accounts for 0.1%-3%, and further 0.2%-1.5%.

3. The skin care composition having a pearlescent appearance according to claim 1, characterized in that The feed mass ratio of the diol, the solubilizer and the octanoylsalicylic acid is 3-6:0.4-1.5:

1.

4. The skin care composition having a pearlescent appearance according to claim 1, characterized in that During the preparation of the skin care composition, the temperature of the heating and dissolving is 40-55° C.; and / or, during the preparation of the skin care composition, the first phase is gradually added to the second phase in batches or according to a preset flow rate.

5. The skin care composition having a pearlescent appearance according to claim 1, characterized in that The capryloyl salicylic acid is present in the skin care composition in the form of plate-like crystals.

6. The skin care composition having a pearlescent appearance according to claim 1, characterized in that The diol is a combination of one or more selected from methyl propanediol, butylene glycol, dipropylene glycol, and 1,3-propylene glycol; and / or, in terms of mass percentage, the polyol accounts for 1%-10% and further 1%-5% in the skin care composition.

7. The skin care composition having a pearlescent appearance according to claim 1, characterized in that The thickening phase includes a thickener. In terms of mass percentage, the thickener accounts for 0.1%-1.0% of the skin care composition, and further accounts for 0.1%-0.6%.

8. The skin care composition having a pearlescent appearance according to claim 7, characterized in that The thickener includes polyacrylate crosspolymer-6.

9. The skin care composition having a pearlescent appearance according to claim 1, characterized in that The aqueous phase includes water, a humectant, and optionally a chelating agent and a preservative; Further, the moisturizing agent includes glycerin; Furthermore, in the skin care composition, the moisturizer accounts for 3%-12%, the chelating agent accounts for 0-0.2%, and the preservative accounts for 0-0.5%, calculated by mass percentage.

10. A method for preparing a skin care composition having a pearlescent appearance according to any one of claims 1 to 9, characterized in that: The preparation method comprises: (1) mixing and dissolving the components in the solubilization phase at 40-55° C. until a transparent state is obtained to obtain a first phase; (2) mixing the aqueous phase and the thickening phase to obtain a second phase; (3) Adding the first phase into the second phase and mixing well to obtain the skin care composition.

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