Emulsion type cosmetic

Abstract

To provide an emulsion type cosmetic which has good storage stability, spreads smoothly and has no stickiness after application while having rich and thick feeling during application.SOLUTION: There is provided an emulsion type cosmetic which comprises the following components(A) to (D): a synthetic stevensite represented by the general formula (1), MgxNaySi4O10(OH)2 Naz (1), where, under the condition that x+y is less than 3, x is a number of 2 or more and y is a number of 0 or 0.1 and z is a number larger than 0 and up to 1.0., (B) diisostearyl malate, (C) (moringa oil / hydrogenated moringa oil) esters and (D) an amphoteric surfactant and has good storage stability, spreads smoothly and has no stickiness after application while having rich and thick feeling during application.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to an emulsion-type cosmetic preparation which has good storage stability, has a rich and thick feel when applied, spreads smoothly, and is not sticky after application. [Background technology]

[0002] Emulsion-type cosmetics are often used for the primary purpose of replenishing water and oil to the skin and moisturizing it. However, to differentiate products and add high value, it is essential that they have an appealing feel during and after application. Although consumer preferences for usability vary, in recent years, many consumers prefer cosmetics that have a rich, thick feel that gives a sense of luxury when applied, and also spread smoothly on the skin.

[0003] It is also known that emulsion-type cosmetics containing water-swellable clay minerals spread well, are not sticky, and have a refreshing feel. As emulsion-type cosmetics containing water-swellable clay minerals, a technology related to an emulsion consisting of bentonite containing cation-exchangeable sodium ions, a water-soluble polymer, an oily substance, and water (Patent Document 1), and a technology related to cosmetics containing synthetic bentonite and silicone oil (Patent Document 2) have been disclosed.

[0004] However, the clay minerals described in these publications tend to be easily aggregated, have a lower dispersion stability, and have a reduced thickening effect due to the presence of many electrolytes and organic substances. In addition, solid oils and viscous oils are generally blended to create a rich, full-bodied feel, but the inclusion of these oils can cause an excessive increase in hardness, poor spreadability on the skin, and a sticky feeling after application.

[0005] In order to solve such problems, a technology has been disclosed in which a water-swellable clay mineral, a polar oil that is liquid at 20°C, at least one selected from tetrahydric, pentahydric and hexahydric polyhydric alcohols, and a water-soluble polymer are incorporated (Patent Document 3), and a technology has been disclosed in which an oil phase composed of an oil solution that is paste-like or solid at 20°C, or a mixed oil containing 10% by weight or more of an oil solution with a melting point of 45°C or higher, forms pseudo-aggregated particles with an average particle size of 10 to 200 μm and disperses them in an aqueous phase (Patent Document 4). However, the problem has not yet been solved. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Publication No. 56-150007 [Patent Document 2] Japanese Patent Application Publication No. 3-83909 [Patent Document 3] JP 2017-8009 A [Patent Document 4] JP 2001-39827 A Summary of the Invention [Problem to be solved by the invention]

[0007] The present invention aims to provide an emulsion-type cosmetic preparation which has good storage stability, has a rich and thick feel when applied, spreads smoothly, and is not sticky after application. [Means for solving the problem]

[0008] As a result of intensive research into the above-mentioned problems, the present inventors discovered that an emulsion-type cosmetic composition containing synthetic stevensite, diisostearyl malate, (moringa oil / hydrogenated moringa oil) esters, and an amphoteric surfactant can solve the above-mentioned problems, and thus completed the present invention.

[0009] That is, the present invention relates to the following components (A) to (D): (A) Synthetic stevensite represented by general formula (1) (chemical 1) Mg x Na y SiO 10 (OH)2 Na z (1) In the formula, x and y are numbers equal to or greater than 2, y is a number between 0 and 0.1, and z is a number greater than 0 and up to 1.0, provided that x+y is less than 3. (B) Diisostearyl malate (C) (Moringa oil / hydrogenated moringa oil) esters (D) Amphoteric surfactant The present invention provides an emulsion-type cosmetic preparation comprising the above components, the content of component (A) being 0.05 to 10% by weight, the content of component (B) being 0.1 to 10% by weight, and the content of component (C) being 0.5 to 8% by weight.

[0010] The present invention also provides an emulsion-type cosmetic preparation according to claim 1, wherein the component (D) is hydrogenated lecithin.

[0011] Furthermore, the present invention provides the emulsion-type cosmetic preparation according to claim 1 or 2, characterized in that component (D) is hydrogenated lecithin having a phosphatidylcholine content of 70% or more, and the content of component (D) is 0.05 to 2% by weight. Effect of the Invention

[0012] The emulsion cosmetic of the present invention has good storage stability, and while it has a rich and thick feel when applied, it spreads smoothly and is not sticky after application. BEST MODE FOR CARRYING OUT THEINVENTION

[0013] In the emulsion-type cosmetic of the present invention, the essential component (A) synthetic Stevensite is preferably composed of Stevensite-type magnesium sodium phyllosilicate, and its composition is represented by formula (1), in which x and y are each a number of 2 or more, y is a number between 0 and 0.1, and z is a number greater than 0 and up to 1.0, provided that x+y is less than 3.

[0014] Component (A) used in the present invention is the same as synthetic hectorite and synthetic saponite from the viewpoint of being a magnesium silicate hydrate belonging to smectite. However, there are differences between them, in that the alkali metal moiety in the layer of component (A) is sodium and the total number of magnesium and sodium atoms in the layer is less than 3, whereas the alkali metal moiety in the layer of synthetic hectorite is lithium and the total number of magnesium and lithium atoms in the layer is 3.

[0015] In addition, synthetic saponite contains aluminum in the alkali metal portion of the layer, and the total number of magnesium and lithium atoms in the layer is 3, which indicates differences.

[0016] The component (A) used in the present invention is obtained in a form that does not contain impure metal components, and is a white powder having a general Hunter whiteness of 80% or more.

[0017] The content of component (A) used in the present invention is 0.05 to 10% by weight, preferably 0.5 to 5% by weight, based on the emulsion cosmetic. In this range, sufficient effects can be obtained in terms of a rich, thick feel when applied and smooth spread when applied. If the content of component (A) is less than 0.05% by weight, the thickening effect of the emulsion is poor, so stability may be poor and a rich, thick feel when applied may not be obtained, which is not preferable. Also, if the content of component (A) exceeds 10% by weight, dispersibility may be poor, and the product may feel rough during use or hardness may increase over time, which is not preferable.

[0018] The component (B) diisostearyl malate used in the present invention is a diester of malic acid and isostearyl alcohol. Examples of commercially available products include Esterol DISM (manufactured by National Mimatsu Co., Ltd.) and Cosmol 222 (manufactured by Nisshin Oillio Group Co., Ltd.).

[0019] The content of component (B) used in the present invention is 0.1 to 10% by weight, preferably 0.5 to 5% by weight, based on the emulsion cosmetic. Within this range, sufficient effects can be obtained in terms of a rich, full-bodied feel when applied, smooth spread when applied, and no stickiness after application. If the content of component (B) is less than 0.1% by weight, it is not preferable because the rich, full-bodied feel when applied may not be obtained or the smoothness of spread may be insufficient. Also, if the content of component (B) exceeds 10% by weight, it is not preferable because it may become difficult to spread or sticky after application.

[0020] The component (C) (moringa oil / hydrogenated moringa oil) ester used in the present invention is an ester obtained by transesterification of Moringa oleifera seed oil and hydrogenated moringa oil, and is solid at 25° C. An example of a commercially available product is FLORALIPIDS MORINGA BUTTER (manufactured by Floratech).

[0021] The content of component (C) used in the present invention is 0.5 to 8% by weight, preferably 1 to 6% by weight, based on the emulsion cosmetic. Within this range, the storage stability is good, and sufficient effects are obtained in terms of a rich, full-bodied feel when applied and no stickiness after application. If the content of component (C) is less than 0.5% by weight, it is not preferable because the rich, full-bodied feel when applied may not be obtained or the smoothness of spread may be insufficient. Also, if the content of component (C) exceeds 8% by weight, it is not preferable because the storage stability may deteriorate or stickiness may occur after application.

[0022] The amphoteric surfactant (D) used in the present invention is not particularly limited, but any amphoteric surfactant commonly used in cosmetics can be used regardless of origin, such as animal origin, plant origin, petroleum origin, and solid, paste, liquid, etc. Examples of amphoteric surfactants include, but are not limited to, hydrogenated lecithin and lauramidopropyl betaine. In addition, one or more selected from these can be used in combination. Among these, hydrogenated lecithin is preferred from the viewpoint of storage stability, and hydrogenated lecithin with a phosphatidylcholine (PC) content of 70% or more is more preferred from the viewpoint of a rich, thick feel when applied. Examples of commercially available products include SLP-PC70HS (PC content: 70%) (manufactured by Tsuji Oil Co., Ltd.) and Coatosome NC-21 (PC content: 90% or more) (manufactured by NOF Corporation).

[0023] The content of component (D) used in the present invention is not particularly limited to the emulsion cosmetic, but is preferably 0.05 to 2% by weight. Within this range, the storage stability is good, and sufficient effects are obtained in terms of a rich, thick feel when applied, and no stickiness after application.

[0024] The emulsion-type cosmetic of the present invention may further contain various ingredients depending on the purpose of use. For example, nonionic surfactants, anionic surfactants, cationic surfactants, aqueous components, oily components, UV absorbers, preservatives, antioxidants, whitening agents, vitamins, amino acids, hormones, peptides, physiologically active plant extracts, fluorescent materials, pigments, dyes, fragrances, scrubbing agents, binders, extenders, thickeners, sugars, nutritional ingredients, chelating agents, bactericides, keratin improving agents, keratin dissolving agents, antibiotics, skin permeation enhancers, blood circulation enhancers, anti-inflammatory agents, cell activators, anti-inflammatory agents, analgesics, skin softeners, skin emollients, wound healing agents, metabolism enhancers, etc. may be contained within a range that does not impair the effects of the present invention.

[0025] The emulsion cosmetic of the present invention can be applied to beauty serums, milky lotions, creams, packs, etc., and the formulation may be any of emulsion, cream, solid, etc. The form of the emulsion cosmetic of the present invention may be any of oil-in-water emulsion cosmetic, water-in-oil emulsion cosmetic, etc., with oil-in-water emulsion cosmetic being preferred. EXAMPLES

[0026] The present invention will be described in more detail below with reference to examples, but the present invention is not limited to these examples. All contents are shown in weight %.

[0027] (Manufacturing method) Ingredients 1 to 6 were mixed uniformly and heated to 80° C. to make an oil phase. Ingredients 7 to 12 were mixed uniformly and heated to 80° C. to make an aqueous phase. After the oil phase and aqueous phase were mixed, they were cooled to 30° C. to obtain an emulsion-type cosmetic preparation.

[0028] (Storage stability evaluation method) The obtained emulsion-type cosmetic preparation was filled into a plastic container and stored for 6 months in a thermostatic chamber at 40° C. The emulsion particles were observed under a microscope and rated according to the following criteria. ◎: No difference was observed from the initial state. ◯: The emulsion particles are large, but the emulsion state is maintained. ×: Emulsion particles are large and separated.

[0029] (Usability evaluation method) A usability test was conducted by a panel of 20 experts. The obtained emulsion-type cosmetic was used and evaluated according to the following criteria for "rich and full-bodied feel when applied," "smooth spread when applied," and "non-stickiness after application." (1) Rich, full-bodied texture upon application ◎: 18 or more people judged that it had a rich, full-bodied texture. ○: 14 to 17 people judged that it had a rich, full-bodied texture. △: 9 to 13 people judged that it had a rich and full-bodied texture. ×: Eight or fewer people judged the taste to be rich and full-bodied. (2) Smooth spread when applied ◎: 18 or more people judged that it felt smooth and stretchy. ○: 14 to 17 people judged that it felt smooth and stretchy. △: 9 to 13 people judged that it felt smooth and stretchy. ×: Eight or fewer people judged that the product spread smoothly. (3) No stickiness after application ⊚: 18 or more people judged it to be non-sticky. ○: 14 to 17 people judged it to be not sticky. △: 9 to 13 panelists judged that there was no stickiness. ×: Eight or fewer people judged the product to be non-sticky.

[0030] [Table 1]

[0031] From the results in Table 1, the compositions of the present invention, Examples 1 to 4, obtained satisfactory results in all the items evaluated. Among them, Examples 2 and 3, which are compositions containing 0.5 to 5% by weight of synthetic stevensite, obtained particularly satisfactory results. On the other hand, as shown in Comparative Examples 1 and 2, when no synthetic stevensite was contained or when the content was less than 0.05% by weight, satisfactory results were not obtained in terms of storage stability and rich, thick feel when applied. Also, as shown in Comparative Example 3, when the content of synthetic stevensite was more than 10% by weight, satisfactory results were not obtained in terms of storage stability and smooth spread when applied. Also, as shown in Comparative Examples 4 and 5, when bentonite or xanthan gum was contained instead of synthetic stevensite, satisfactory results were not obtained in terms of storage stability, rich, thick feel when applied, and smooth spread when applied.

[0032] [Table 2]

[0033] From the results in Table 2, the compositions of the present invention, Examples 5 to 8, obtained satisfactory results in all the items evaluated. Among them, Examples 6 and 7, which are compositions containing 0.5 to 5% by weight of diisostearyl malate, obtained particularly satisfactory results. On the other hand, as shown in Comparative Examples 6 and 7, when diisostearyl malate was not contained or the content was less than 0.1% by weight, satisfactory results were not obtained in terms of rich, full-bodied feel when applied and smooth spread when applied. Also, as shown in Comparative Example 8, when the content of diisostearyl malate was more than 10% by weight, satisfactory results were not obtained in terms of smooth spread when applied and non-stickiness after application. Also, as shown in Comparative Example 9, when di(phytosteryl / octyldodecyl) lauroyl glutamate was contained instead of diisostearyl malate, satisfactory results were not obtained in terms of smooth spread when applied and non-stickiness after application. Furthermore, as shown in Comparative Example 10, when phytosteryl macadamiate was contained instead of diisostearyl malate, satisfactory results were not obtained in terms of the rich, full-bodied feel upon application and the smooth spread upon application.

[0034] [Table 3]

[0035] From the results of Table 3, the compositions of the present invention, Examples 9 to 12, obtained satisfactory results in all the items evaluated. Among them, Examples 10 and 11, which are compositions containing 1 to 6% by weight of (moringa oil / hydrogenated moringa oil) esters, obtained particularly satisfactory results. On the other hand, as shown in Comparative Example 11, when the composition did not contain (moringa oil / hydrogenated moringa oil) esters, satisfactory results were not obtained in terms of rich, thick feel when applied and smooth spread when applied. Also, as shown in Comparative Example 12, when the content of (moringa oil / hydrogenated moringa oil) esters was less than 0.5% by weight, satisfactory results were not obtained in terms of rich, thick feel when applied. Also, as shown in Comparative Example 13, when the content of (moringa oil / hydrogenated moringa oil) esters exceeded 8% by weight, satisfactory results were not obtained in terms of storage stability and non-stickiness after application. In addition, as shown in Comparative Examples 14 and 15, when shea butter or wasabinoki seed oil was contained instead of the (moringa oil / hydrogenated moringa oil) esters, satisfactory results were not obtained in terms of rich, full-bodied feel upon application and smooth spread upon application.

[0036] [Table 4]

[0037] From the results in Table 4, the compositions of the present invention, Examples 13 to 22, obtained satisfactory results in all the items evaluated. Among them, the compositions of Examples 14, 15, 17, and 18, which contained 0.05 to 2% by weight of hydrogenated lecithin with a PC content of 70% or more, obtained particularly satisfactory results. On the other hand, as shown in Comparative Example 16, when no amphoteric surfactant was contained, satisfactory results were not obtained in terms of storage stability and rich, thick feel when applied. Also, as shown in Comparative Example 17, when the anionic surfactant Na stearoyl lactylate was contained instead of the amphoteric surfactant, satisfactory results were not obtained in terms of storage stability, rich, thick feel when applied, and non-stickiness after application. Also, as shown in Comparative Example 18, when the cationic surfactant stearoxypropyltrimonium chloride was contained instead of the amphoteric surfactant, satisfactory results were not obtained in terms of storage stability, smooth spread when applied, and non-stickiness after application.

[0038] Other embodiments of the present invention will be described below.

[0039] Example 23 (Ingredients) (Weight%) 1. Sorbitan stearate 1.0 2. Squalane 10.0 3. Vaseline *19 5.0 4. Meadowfoam Oil 3.0 5. Diisostearyl malate 1.0 6. Behenyl alcohol 3.0 7. (Moringa Oil / Hydrogenated Moringa Oil) Esters 3.0 8. Ceramide NG 3.0 9. Cholesterol 0.1 10. Hydrogenated lecithin (PC content: 90% or more) 0.5 11.Purified water remainder 12. Synthetic Stevensite 3.0 13.1,3-Butylene glycol 12.0 14. Xanthan gum 0.1 15. Sodium hyaluronate 0.1 16. Phenoxyethanol 1.0 17. Glycerin 5.0 18.Fragrance 0.1 (Manufacturing method) Components 1 to 10 were mixed uniformly and heated to 80°C to form an oil phase. Components 11 to 17 were mixed uniformly and heated to 80°C to form an aqueous phase. After the oil phase and aqueous phase were mixed, component 18 was added at 60°C and cooled to 30°C to obtain an emulsion-type cosmetic preparation.

[0040] Example 24 (Ingredients) (Weight%) 1. Sorbitan stearate 1.0 2. Squalane 7.0 3. Glyceryl / Polyglyceryl-6 Isostearate / Behenate Esters *20 5.0 4. Jojoba seed oil *21 3.0 5. Diisostearyl malate 1.0 6. Phytosteryl Hydroxystearate *22 2.0 7. Behenyl alcohol 3.0 8. (Moringa Oil / Hydrogenated Moringa Oil) Esters 3.0 9. Ceramide NG 3.0 10. Cholesterol 0.1 11. Hydrogenated lecithin (PC content: 90% or more) 0.5 12.Purified water remainder 13. Synthetic Stevensite 3.0 14.1,3-Butylene glycol 12.0 15. Xanthan gum 0.1 16. Sodium hyaluronate 0.1 17. Pentylene glycol 2.0 18. Diglycerin 5.0 19. Sodium tocopheryl phosphate *23 0.5 20. Water-soluble collagen liquid *24 1.0 21.Fragrance 0.1 (Manufacturing method) Components 1 to 11 were mixed uniformly and heated to 80°C to form an oil phase. Components 12 to 19 were mixed uniformly and heated to 80°C to form an aqueous phase. After mixing the oil phase and aqueous phase, components 20 and 21 were added at 60°C and the mixture was cooled to 30°C to obtain an emulsion-type cosmetic preparation.

[0041] Both Examples 23 and 24 were excellent in storage stability, and also obtained satisfactory results in all of the evaluation items for the feeling of use.

[0042] *1: NIKKOL SS-10V: Manufactured by Nikko Chemicals *2: SQUALANE: Manufactured by Kishimoto Special Liver Oil Industry Co., Ltd. *3: Clopure Medfoam-LQ-(JP): Manufactured by Cloda Japan *4: BEHENYL ALCOHOL: manufactured by Koyu Alcohol Kogyo Co., Ltd. *5: Esterol DISM: Made by National Mimatsu Co., Ltd. *6: FLORALIPIDS MORINGA BUTTER: Manufactured by Floratech *7: Kunipia-F: Manufactured by Kunimine Industries Co., Ltd. *8: Echo Gum: manufactured by Sumitomo Pharma Food & Chemical Co., Ltd. *9: Coatsome NC-21: NOF Corporation *10: Plandool-LG2: Manufactured by Nippon Fine Chemicals *11: Plandool-MAS: Manufactured by Nippon Fine Chemicals *12: Shea Butter RF: Manufactured by Koyu Alcohol Kogyo Co., Ltd. *13: FLORALIPIDS MORINGA OIL-REFINED: Manufactured by Floratech *14: SLP-PC70HS: Tsuji Oil Mills *15: Resinol S-10M: Nikko Chemicals *16: Amphorex LB-2: manufactured by Miyoshi Oil Co., Ltd. *17: Sodium stearoyl lactylate: manufactured by Musashino Chemical Co., Ltd. *18: Kotamin E-80K: manufactured by Kao Corporation *19: CROLATUM V: Manufactured by Croda Japan *20: S-Face VL-212: manufactured by Sakamoto Pharmaceutical Co., Ltd. *21: NIKKOL Jojoba Oil E: Manufactured by Nikko Chemicals *22: HS OIL OHP: National Mimatsu Co., Ltd. *23: TPNa: Showa Denko Co., Ltd. *24: Arfomarin-CL: manufactured by Technoble [Industrial Applicability]

[0043] According to the present invention, it is possible to provide an emulsion-type cosmetic preparation which has good storage stability, has a rich and thick feel when applied, yet spreads smoothly and is not sticky after application.

Claims

1. The following components (A) to (D) (A) Synthetic stevensite represented by general formula (1) (Chem.1) MM ｘ Na ｙ Si ４ O １０ (OH) ２ ・Nu ｚ (1) In the formula, x and y are numbers equal to or greater than 2, y is a number between 0 and 0.1, and z is a number greater than 0 and up to 1.0, provided that x+y is less than 3. (B) Diisostearyl malate (C) (Moringa oil / hydrogenated moringa oil) esters (D) Amphoteric surfactant The emulsion-type cosmetic preparation comprises: a) a component (A) content of 0.05 to 10% by weight; b) a component (B) content of 0.1 to 10% by weight; and c) a component (C) content of 0.5 to 8% by weight.

2. 2. The emulsion-type cosmetic preparation according to claim 1, wherein the component (D) is hydrogenated lecithin.

3. 3. The emulsion-type cosmetic preparation according to claim 1, wherein the component (D) is a hydrogenated lecithin having a phosphatidylcholine content of 70% or more, and the content of the component (D) is 0.05 to 2% by weight.

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