Cosmetic composition

Abstract

The invention belongs to the technical field of cosmetics, and particularly relates to a cosmetic composition. More specifically, the present invention relates to a composition which increases a makeup-holding effect and simultaneously has a sunscreen effect. The invention provides a composition. The composition is prepared from pentaerythritol tetraisostearate, C12-15 alcohol benzoate and titanium dioxide subjected to surface organic treatment. According to the composition disclosed by the invention, the sunscreen effect is improved by adding the specially-made titanium dioxide, meanwhile, the defect of poor makeup holding effect of the specially-made titanium dioxide is improved by virtue of the synergistic effect of all the components, and finally, the composition capable of increasing the makeup holding effect and giving consideration to a good sunscreen effect is obtained.

Description

Technical Field

[0001] The present invention belongs to the technical field of cosmetics, and specifically, relates to a cosmetic composition; more specifically, relates to a composition that increases the makeup-lasting effect and has a sunscreen effect. Background Art

[0002] In areas such as outdoor sports and outdoor work, people usually need to be exposed to the sun for a long time, so they need efficient and long-lasting sun protection. In the field of cosmetics, there are physical sunscreens and chemical sunscreens. Although traditional chemical sunscreens have a high sunscreen effect, there are some potential risks, such as irritation to the skin and adverse effects on the environment. Physical sunscreens (such as titanium dioxide and zinc oxide) have received widespread attention due to their natural safety and environmental protection characteristics. However, traditional physical sunscreens also have some defects, such as low sunscreen efficiency. It is found in related technologies that nano-scale titanium dioxide has a better sunscreen effect, but nano-scale titanium dioxide has the risk of being inhaled into the human body in some systems, such as in powder systems. Summary of the invention

[0003] In view of the deficiencies of the prior art, an object of the present invention is to provide a cosmetic composition with better sunscreen effect.

[0004] In order to solve the above problems, the present application uses a surface organic treatment method to allow non-spherical powder-nano-scale titanium dioxide to aggregate and grow to the micron level, so that it has a non-nano spherical structure, while exerting the sunscreen effect of nano-scale titanium dioxide, and the prepared powder has the characteristics of high dispersion of spherical powder, good color development ability, light and natural, and oil control effect, and due to the surface organic treatment, the powder shows strong water resistance, thereby improving the overall adhesion of the powder. However, the inventor of the present application unexpectedly discovered during the research that when the powder is used in conjunction with cosmetics, its makeup holding effect is not good, and it is easy to remove makeup on the face. After removing makeup, the skin appears dry and dull, and loses the original makeup beauty.

[0005] Therefore, in order to solve this newly discovered problem, the present invention creatively cooperates with pentaerythritol tetraisostearate, C12-15 alcohol benzoate, and surface organically treated titanium dioxide to improve the defect of poor makeup lasting effect of the special titanium dioxide, and finally obtains a composition that can increase the makeup lasting effect while taking into account good sun protection effect.

[0006] In view of this, in a first aspect of the present invention, a cosmetic composition is provided, comprising: pentaerythritol tetraisostearate, C12-15 alcohol benzoate, and surface organically treated titanium dioxide.

[0007] Furthermore, the titanium dioxide with organic surface treatment is nano-sized titanium dioxide that is aggregated after undergoing organic surface treatment to obtain micron-sized titanium dioxide.

[0008] Further, the organic treatment is treatment by dimethicone. Further, the organic treatment is treatment by liquid and silicone peptide dimethicone at the same time.

[0009] In some specific embodiments, the steps of preparing the surface organically treated titanium dioxide include:

[0010] S1, mixing polydimethylsiloxane alcohol and titanium dioxide to obtain a mixture;

[0011] S2, drying and crushing the mixture to obtain the titanium dioxide with organic surface treatment.

[0012] Furthermore, the mass ratio of pentaerythritol tetraisostearate:C12-15 alcohol benzoate:titanium dioxide in the cosmetic composition of the present invention can be (1-10):(0.5-2):(10-30).

[0013] Preferably, the mass ratio of pentaerythritol tetraisostearate:C12-15 alcohol benzoate:titanium dioxide in the cosmetic composition of the present invention can be (1-5):(0.5-1.5):(20-30).

[0014] More preferably, the mass ratio of pentaerythritol tetraisostearate:C12-15 alcohol benzoate:titanium dioxide in the cosmetic composition of the present invention may be (3-5):(0.5-1):(25-30).

[0015] Most preferably, the mass ratio of pentaerythritol tetraisostearate:C12-15 alcohol benzoate:titanium dioxide in the cosmetic composition of the present invention may be 4:1:26.

[0016] For example, 42 g of the cosmetic composition of the present invention may contain 30 g of titanium dioxide, 10 g of pentaerythritol tetraisostearate, and 2 g of C12-15 alcohol benzoate. Preferably, 30 g of the cosmetic composition of the present invention may contain 26 g of titanium dioxide, 4 g of pentaerythritol tetraisostearate, and 1 g of C12-15 alcohol benzoate.

[0017] By configuring and using the components of the cosmetic composition of the present invention according to the above ratios, the long-lasting effect of the cosmetic can be further increased, and the sunscreen effect is further enhanced.

[0018] In a second aspect, the present invention provides a use of the above-mentioned cosmetic composition in a cosmetic having both enhanced long-lasting makeup effect and sunscreen effect.

[0019] Furthermore, the cosmetics may be cosmetics for facial use.

[0020] Furthermore, the increase in the makeup-lasting effect refers to an increase in the degree of skin adhesion, degree of pore concealment, degree of durability, and degree of oil control.

[0021] In a third aspect, the present invention provides a cosmetic comprising the cosmetic composition as described above.

[0022] Furthermore, the mass fraction of the cosmetic composition in the cosmetics is 10-40%, and can be 10%, 12%, 15%, 16%, 18%, 20%, 25%, 30%, 31%, 40% in the cosmetics. Preferably, the mass fraction of the cosmetic composition in the cosmetics is 31%.

[0023] For example, every 100g of cosmetics can include 10g-40g of the cosmetic composition of the present invention, such as 10g, 12g, 15g, 16g, 18g, 20g, 25g, 30g, 31g, 40g of the cosmetic composition of the present invention, preferably, every 100g of cosmetics can include 31g of the cosmetic composition of the present invention. More specifically, every 100g of cosmetics can include 26g of titanium dioxide, 4g of pentaerythritol tetraisostearate, and 1g of C12-15 alcohol benzoate.

[0024] Furthermore, the cosmetics may be cosmetics for facial use.

[0025] The cosmetics used on the face can be loose powder, honey powder, pressed powder, primer, foundation, air cushion, blush, etc.

[0026] Preferably, the cosmetic of the present invention is loose powder.

[0027] When the composition of the present application is added to loose powder, the physical sunscreen can be combined with the loose powder, which has multiple functions such as oil control, blemish concealer, skin brightening, sun protection, etc., so that consumers can obtain sun protection performance by setting makeup and touching up makeup through loose powder, which is more portable and practical.

[0028] The dosage form that can be used as a cosmetic is a stick, dish, ointment, or the like.

[0029] In the present invention, in addition to the above-mentioned ingredients, the cosmetics may also contain any ingredients commonly used in cosmetics and pharmaceuticals. As the optional ingredients, the following ingredients may be mentioned, and one or more than one may be contained as long as the effects of the present invention are exerted.

[0030] In some specific embodiments, the cosmetic of the present invention further comprises one or more of water, fillers, colorants, active ingredients, moisturizers, preservatives, binders, thickeners, or emulsifiers.

[0031] The cosmetic of the present invention may contain any amount of water. As the water, water used in cosmetics, quasi-drugs, etc. can be used, for example, ion-exchanged water, distilled water, ultrapure water, tap water, etc. can be used.

[0032] In some specific embodiments, the filler of the present invention can be a powder; the powder can be a spherical powder or a flaky powder; specifically, the spherical powder is one or more of vinyl polydimethylsiloxane / polymethylsiloxane silsesquioxane crosslinked polymer, silica, polymethylsilsesquioxane, nylon-12, sodium calcium aluminum silicate, and methyl alkyl silica; the flaky powder is one or more of boron nitride, synthetic fluorphlogopite, and mica.

[0033] In some specific embodiments, the colorant of the present invention can include CI 77491, CI 15850, CI77499, CI 77891, CI 77492, etc., and can also be titanium dioxide, iron red, red 7, iron yellow, iron black, etc. Preferably, it can be one or more of the aforementioned colorants.

[0034] In some specific embodiments, the active ingredient of the present invention can be one or more of peach blossom extract, unsaponifiable matter of sunflower (HELIANTHUS ANNUUS) seed oil, snow lotus (SAUSSUREA INVOLUCRATA) extract, Eryngium maritimum (ERYNGIUM MARITIMUM) callus culture filtrate, alpine edelweiss (LEONTOPODIUM ALPINUM) callus extract, Sophora japonica (SOPHORA JAPONICA) flower extract, Camellia sinesis (CAMELLIA SINENSIS) flower extract, Hypericum perforatum (HYPERICUM PERFORATUM) oil, Bletilla striata (BLETILLA STRIATA) root powder, or Atractylodes macrocephala (ATRACTYLODESMACROCEPHALA) root powder.

[0035] In some specific embodiments, the moisturizing agent of the present invention can include polyethylene glycol, propylene glycol, glycerol, 1,3-butylene glycol, xylitol, sorbitol, maltitol, chondroitin sulfate, hyaluronic acid, mucin sulfate, cholesterol-12-hydroxystearate, sodium lactate, bile acid salts, pyrrolidone carboxylates, short-chain soluble collagen, diglycerol PO adduct, yarrow extract, fumitory extract, etc.

[0036] In some specific embodiments, the preservatives of the present invention can include parahydroxybenzoates such as methyl parahydroxybenzoate, ethyl parahydroxybenzoate, butyl parahydroxybenzoate, benzoic acid, salicylic acid, sorbic acid, para-chloromecresol, hexachlorophene, benzalkonium chloride, chlorhexidine, trichlorocarbanilide, photosensitizer, phenoxyethanol, etc.

[0037] In some specific embodiments, the thickener of the present invention can include gum arabic, carrageenan, carrageenan, tragacanth gum, carob bean gum, casein, dextrin, gelatin, sodium pectate, sodium alginate, methyl cellulose, ethyl cellulose, CMC, hydroxyethyl cellulose, hydroxypropyl cellulose, PVA, PVM, PVP, sodium polyacrylate, carboxyvinyl polymer, locust bean gum, guar gum, tamarind gum, dialkyl dimethyl ammonium cellulose sulfate, xanthan gum, magnesium aluminum silicate, bentonite, hectorite, propolis, silicic anhydride, etc.

[0038] In some specific embodiments, the emulsifier of the present invention can include nonionic surfactants, amphiphilic polymers, such as (acrylate / methacrylate stearyl alcohol polyether-20) copolymer, hydrophobically modified alkyl cellulose, hydrogenated lecithin, sorbitan laurate, sorbitan palmitate, sorbitan oleate, sorbitan stearate, sorbitan isostearate, sorbitan sesquioleate, sorbitan trioleate, sorbitan tristearate, sorbitan sesquiisostearate.

[0039] In a specific embodiment, the cosmetics of the present invention include: silica, micron-sized titanium dioxide (surface organic treatment), nylon-12, vinyl polydimethylsiloxane / polymethylsiloxane silsesquioxane crosspolymer, polymethylsilsesquioxane, methyl alkyl silica, sodium calcium aluminum silicate, synthetic fluorphlogopite, mica, boron nitride, pentaerythritol tetraisostearate, C12-15 alcohol benzoate, caprylyl glycol / glyceryl caprylate / 1,3-propylene glycol, and active ingredients.

[0040] In a specific embodiment, the cosmetic of the present invention consists of the following ingredients:

[0041] Silica 22.8g, micron-sized titanium dioxide (surface organic treatment) 26g, nylon-12 10g, vinyl dimethicone / polymethicone silsesquioxane crosspolymer 8g, polymethylsilsesquioxane 6g, methyl alkyl silica 0.2g, sodium calcium aluminum silicate 4g, synthetic fluorphlogopite 7g, mica 7g, boron nitride 2g, pentaerythrityl tetraisostearate 4g, C12-15 alcohol benzoate 1g, caprylyl glycol / glyceryl caprylate / 1,3-propylene glycol 1g, active ingredient 1g.

[0042] In a fifth aspect, the present invention provides a method for preparing a cosmetic having enhanced makeup lasting effect and sunscreen effect, comprising the following steps:

[0043] S1, mixing titanium dioxide and other powders and stirring to obtain phase A, wherein the titanium dioxide is micrometer-sized titanium dioxide aggregated after surface organic treatment of nano-sized titanium dioxide;

[0044] S2, adding pentaerythritol tetraisostearate and C12-15 alcohol benzoate into phase A;

[0045] S3, further adding one or more of an emollient, a filler, a colorant, a preservative, a binder, a thickener, a stabilizer, or an emulsifier, stirring, and finally preparing the cosmetics.

[0046] In some specific embodiments, the stirring speed is 1500-1800 rpm, and the stirring time is 1-3 minutes. DETAILED DESCRIPTION

[0047] The present invention will be described in detail below in conjunction with specific embodiments and examples, and the advantages and various effects of the present invention will be more clearly presented. It should be understood by those skilled in the art that these specific embodiments and examples are used to illustrate the present invention, rather than to limit the present invention.

[0048] The term "pentaerythritol tetraisostearate" refers to the compound of formula C 60 H 118 O8 is commonly used as a surfactant in cosmetics and food additives. It has hydrophilic and lipophilic properties, which can make aqueous and oily ingredients miscible to form cosmetics in the form of emulsions, creams, etc.

[0049] The term "C12-15 alcohol benzoate" refers to 19 H 30 O2, usually has good solubility and color powder dispersibility, and feels refreshing on the skin. This product is very easy to emulsify and can be widely used in various creams and lotions.

[0050] The term "surface organically treated titanium dioxide" refers to a method of subjecting nano-sized titanium dioxide to surface organic treatment to allow non-spherical powders to aggregate and grow, and to give them a micron-sized spherical structure. The powder prepared in this way retains the characteristics of the original powder, and also has the characteristics of spherical powders such as high dispersion, good color development, lightness and naturalness, and oil control effect.

[0051] Example 1: Formula for preparing cosmetics using the composition of the present invention

[0052] The formula of the composition of the present invention for preparing cosmetics is shown in Table 1, which lists various components used in the present invention for preparing cosmetics.

[0053] Table 1. Formula for preparing cosmetics based on the composition of the present invention

[0054]

[0055]

[0056] The preparation methods of the compositions in Comparative Examples 1-5 are substantially the same as those in Example 1, with only some components in the formula used being different. The specific differences are shown in Table 2 below.

[0057] Table 2. Differences between the Examples and Comparative Examples

[0058]

[0059] Example 2: Preparation of cosmetics using the composition of the present invention

[0060] The cosmetics were prepared according to the formula described in Example 1. Specifically, the cosmetics were prepared by the following steps:

[0061] (1) Weigh the selected weight portions of the flake powder, spherical powder, etc. in each formulation in Table 1, mix them uniformly at room temperature, add them into a powder mixing pot and stir them at high speed (speed of 1500-1800 rpm, time of 1-3 minutes), as phase A;

[0062] (2) Add pentaerythritol tetraisostearate, C12-15 alcohol benzoate, caprylyl glycol / glyceryl caprylate / 1,3-propylene glycol, and active ingredients into phase A and stir again at high speed (speed of 1500-1800 rpm, time of 1-3 minutes), and discharge after mixing evenly.

[0063] Example 3: Long-lasting effect of the cosmetics of the present invention

[0064] Test method: 60 females with an average age of 25±10 years old were selected and randomly divided into 6 groups, with 10 people in each group. First, equal amounts of the embodiment samples of the present invention and the comparative samples were applied on the left and right faces respectively. The testers conducted evaluation tests and comparisons based on the application process and the effects after application.

[0065] The test scoring criteria are as follows:

[0066] Skin adhesion: 1 point: not sticking to the skin, severe powder sticking; 2 points: not sticking to the skin, obvious powder sticking; 3 points: fair skin adhesion, fair powder sticking; 4 points: good skin adhesion, basically no powder sticking; 5 points: very sticking to the skin, no powder sticking.

[0067] Pore ​​concealment: 1 point: poor; 2 points: relatively poor; 3 points: average; 4 points: relatively good; 5 points: good.

[0068] Durability: 1 point: poor; 2 points: poor; 3 points: average; 4 points: good; 5 points: good.

[0069] Oil control degree: 1 point: poor; 2 points: poor; 3 points: average; 4 points: good; 5 points: good.

[0070] Powder fineness: 1 point: rough; 2 points: relatively rough; 3 points: average fineness; 4 points: good fineness; 5 points: very fine.

[0071] Makeup effect preference: 1 point: poor; 2 points: poor; 3 points: average; 4 points: good; 5 points: good.

[0072] The testers scored according to the above scoring criteria, and finally all the scores were counted to calculate the average value. The specific scoring results are shown in Table 3 below. As can be seen from Table 3, after using the surface organically treated titanium dioxide of the present invention, there is indeed a problem of poor makeup holding effect, such as Comparative Examples 1 to 3, while the ordinary titanium dioxide used in Comparative Examples 4 to 5, under the same formula, has a better makeup holding effect than Comparative Examples 1 to 3, which is equivalent to the embodiment. From this, it can be seen that ordinary titanium dioxide does not face the problem of poor makeup holding effect, while the use of surface organically treated titanium dioxide will face this problem. Therefore, specific formula components are required to improve the makeup holding problem caused by surface organically treated titanium dioxide. The present application solves the problem of poor makeup holding effect faced when using surface organically treated titanium dioxide through creative improvements, using pentaerythritol tetraisostearate, C12-15 alcohol benzoate, and surface organically treated titanium dioxide.

[0073] Table 3

[0074]

[0075] Example 4: Sunscreen effect of the cosmetics of the present invention

[0076] Testing method for sun protection value SPF:

[0077] 1. Analyte: the original cosmetic final product.

[0078] 2. Reference substance: SPF value 16.1±2.4, prepared according to the standard formula of medium and high SPF standard product (P2) in the "Technical Specification for Safety of Cosmetics" (2015 edition).

[0079] 3. Subjects: A total of 5 people, 2 males and 3 females, aged 24 to 51 years old, with an average age of 38.2±10.6 years old, met the voluntary inclusion criteria for subjects.

[0080] 4. Light source: Daylight simulator xenon arc lamp, all performance indicators meet the measurement specification requirements.

[0081] 5. Test method: Refer to the specific requirements of the "Technical Specifications for Safety of Cosmetics" (2015 edition) for testing. The subject takes a prone position and his back is irradiated. The minimum erythema dose (MED value) of the subject's skin to ultraviolet radiation is predicted 24 hours before the test, and the ultraviolet radiation dose is adjusted according to the predicted results for testing the test object. On the day of the test, first select a normal skin area of ​​not less than 30cm2 on the subject's back, and evenly apply the test object or reference product to be tested in the above area at a dosage of (2.00±0.05)mg / cm2, and then select the irradiation dose according to the requirements of the specification, and irradiate in three situations: 1. The subject's skin is not coated with the test object; 2. The reference product is applied; 3. The test object is applied. Observe the experimental results after 24 hours, and record the MED values ​​in the three situations respectively.

[0082] SPF value calculation method: The SPF value of the test object or reference product protecting a single subject is expressed by the following formula: SPFi = MED value of protected skin / MED value of unprotected skin

[0083] Testing method for sun protection value PA:

[0084] 1. Analytical object: the original cosmetic final product.

[0085] 2. Reference substance: PFA value 4.4±0.6, prepared according to the standard formula of PFA determination standard substance in "Technical Specification for Safety of Cosmetics" (2015 edition).

[0086] 3. Subjects: A total of 5 people, 2 males and 3 females, aged 22 to 34 years old, with an average age of 27.8±4.4 years old, met the voluntary inclusion criteria for subjects.

[0087] 4. Light source: Daylight simulator xenon arc lamp, all performance indicators meet the measurement specification requirements.

[0088] 5. Test method: Refer to the specific requirements of the "Technical Specifications for Safety of Cosmetics" (2015 edition) for testing. The subject takes a prone position and the back is irradiated. The minimum blackening amount (MPPD value) of the subject's skin to ultraviolet radiation is predicted 24 hours before the test, and the ultraviolet radiation amount is adjusted according to the predicted results for testing the test object. First, select a normal skin area of ​​no less than 30cm2 on the back of the subject, and press (2.00±0.05)mg / cm 2 The test object or reference product is evenly applied to the above area with the dosage; then the UVA exposure amount is selected according to the specification requirements, and the exposure is carried out in three conditions: ① The test object is not applied to the test object; ② The reference product is applied; ③ The test object is applied. Observe the experimental results after 2 to 4 hours, and record the MPPD values ​​in the three conditions respectively.

[0089] The results are shown in Table 4. The Examples and Comparative Examples 1 to 3, which added titanium dioxide with an organic surface treatment, had a sunscreen SPF value greater than 50, while the SPF values ​​of Comparative Examples 4 to 5, which added ordinary titanium dioxide, were only about 21, indicating that their sunscreen effects were poor. It can be seen that adding titanium dioxide with an organic surface treatment can achieve better sunscreen effects.

[0090] Table 4

[0091]

Claims

1. A cosmetic composition comprising: Pentaerythritol tetraisostearate, C12-15 alcohol benzoate, surface organically treated titanium dioxide.

2. The cosmetic composition according to claim 1, characterized in that The titanium dioxide with organic surface treatment is micrometer-sized titanium dioxide aggregated after nanometer-sized titanium dioxide is subjected to organic surface treatment.

3. The cosmetic composition according to claim 1 or 2, characterized in that: The organic treatment refers to treatment with dimethicone.

4. The cosmetic composition according to claim 1, characterized in that The mass ratio of pentaerythritol tetraisostearate:C12-15 alcohol benzoate:titanium dioxide is (1-10):(0.5-2):(10-30). Preferably, the mass ratio of pentaerythritol tetraisostearate:C12-15 alcohol benzoate:titanium dioxide is 4:1:

26.

5. Use of the cosmetic composition according to any one of claims 1 to 4 for a cosmetic having both enhanced long-lasting makeup effect and sunscreen effect.

6. The use according to claim 5, characterized in that The cosmetics are cosmetics for facial use, and preferably, the cosmetics are loose powder.

7. A cosmetic comprising the cosmetic composition according to any one of claims 1 to 4.

8. The cosmetic according to claim 7, characterized in that: The cosmetic further comprises one or more of an emollient, a filler, a colorant, a humectant, a preservative, a binder, a thickener, or an emulsifier.

9. The cosmetic according to claim 7, characterized in that: The filler is a powder; the powder is a spherical powder or a flaky powder; preferably, the spherical powder is one or more of vinyl polydimethylsiloxane / polymethylsiloxane silsesquioxane cross-linked polymer, silica, polymethylsilsesquioxane, nylon-12, sodium calcium aluminum silicate, and methyl alkyl silica; preferably, the flaky powder is one or more of boron nitride, synthetic fluorphlogopite, and mica.

10. The cosmetic according to any one of claims 7 to 9, characterized in that The cosmetics include silica, surface organically treated titanium dioxide, nylon-12, vinyl dimethicone / polymethicone silsesquioxane cross-linked polymer, polymethylsilsesquioxane, methyl alkylated silica, sodium calcium aluminum silicate, synthetic fluorphlogopite, mica, boron nitride, pentaerythritol tetraisostearate, C12-15 alcohol benzoate, caprylyl glycol / glyceryl caprylate / 1,3-propylene glycol, and active ingredients.

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