Cosmetic

Abstract

To provide a cosmetic that instantly gives a perception of wrinkle reduction, has no sticky feel, and exhibits excellent moisturizing effects, specifically a cosmetic that contains niacinamide, tranexamic acid, ursolic acid, L-ascorbic acid, and retinol as anti-wrinkle agents, exhibiting an instant wrinkle-improving effect and excellent user experience.SOLUTION: A cosmetic comprises the following (A), (B), (C), (D), and (E): (A) 0.75 to 4 mass% of a sodium acrylate / sodium acryloyldimethyl taurate copolymer and / or a hydroxyethyl acrylate / sodium acryloyldimethyl taurate copolymer relative to the total amount of the cosmetic; (B) 1 to 4.5 mass% of a silicone elastomer relative to the total amount of the cosmetic; (C) an oil containing at least one selected from triethylhexanoin, diphenylsiloxyphenyl trimethicone, diisostearyl malate, and phytosteryl isostearyl dimer dilinoleate; (D) water; and (E) an anti-wrinkle agent.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to a cosmetic preparation containing a wrinkle improving agent. [Background technology]

[0002] Cosmetics containing anti-wrinkle agents have been marketed with the aim of preventing and improving wrinkles. This cosmetic product, which is intended to prevent and improve wrinkles, contains an active ingredient called a wrinkle-improving agent, which can fundamentally reduce existing wrinkles or wrinkles that are about to develop through continued use of the cosmetic product.

[0003] Various companies have disclosed various technologies for such cosmetics. For example, Patent Document 1 (JP 2018-172379 A) explains that an oil-in-water emulsion cosmetic containing (A) 1 to 8% of an ultraviolet absorber that is solid at 25°C, (B) a polar oil that is liquid at 25°C, (C) polyoxyethylene hydrogenated castor oil and / or polyoxyethylene sorbitan fatty acid ester, (D) 2 to 10% of nicotinamide, and (E) a partially crosslinked organopolysiloxane polymer can address skin aging phenomena such as wrinkles and sagging from both the prevention and improvement aspects, and the cosmetic has a refreshing, non-sticky feel and excellent stability over time. In addition, Patent Document 2 (JP 2022-055773 A) discloses a cosmetic containing an anti-wrinkle agent (such as niacinamide), an oil (such as silicone gel) whose content relative to the total mass of the cosmetic is 10% by mass to 95% by mass, and powder X whose absolute value of the refractive index difference with respect to the refractive index of the oil is 0.1 or more and 1.0 or less and whose content relative to the total mass of the cosmetic is 0.5% by mass to 10% by mass. It explains that in addition to the fundamental wrinkle-improving effect of the anti-wrinkle agent, the feeling of wrinkle improvement can be felt immediately after starting to use the cosmetic. Cosmetics that can give consumers a sense of wrinkle improvement (a feeling that wrinkles have been improved) immediately after starting to use the product on the skin, as in Patent Document 2, are very favorable to consumers and have an attractive quality that motivates continued use. For this reason, formulation design engineers are flocking to conduct research, but even with the above technology, the effect of giving the feeling that wrinkles have been improved immediately has not been sufficient.

[0004] Further related peripheral technologies are known as follows. For example, Patent Document 3 (WO2018 / 143061) discloses an unevenness correcting cosmetic composition that contains (a) a partially crosslinked organopolysiloxane, (b) an oil-absorbing silicone composite spherical powder, and (c) an oil agent having a viscosity of 1 to 100 mm2 / s at 25°C: 8 to 85% by mass, in which the total amount of components (a) and (b) is 10 to 35% by mass, and the mass ratio of component (a) to component (b) expressed as (a) / (b) is 0.02 to 0.55. Although this technology was applicable to the effect of instantly improving wrinkles because unevenness was corrected, the effect was not sufficient. Furthermore, depending on the condition of the skin, it was felt that the product may have a dry feel when used (not moisturizing, not moisturizing enough).

[0005] Known wrinkle improving agents that can be contained in cosmetics include niacinamide, tranexamic acid, ursolic acid, L-ascorbic acid, and retinol. Niacinamide, also known as nicotinamide, niacin, or vitamin B3, is an amide compound of nicotinic acid. Niacinamide is a water-soluble vitamin and a member of the B vitamins. Deficiency of niacinamide can lead to deficiency diseases such as pellagra. Niacinamide is used as an ingredient in topical medications to treat acne (acne vulgaris) and in cosmetics for cosmetic purposes. In Japan, it is approved as an active ingredient for wrinkle improvement (wrinkle niacin) and whitening (nicotinamide) in quasi-drug cosmetics. Tranexamic acid is a type of artificially synthesized amino acid that has the function of inhibiting the action of plasmin, which causes inflammation and allergies. This effect is known to improve skin conditions, and it is popular as an ingredient in cosmetics. In recent years, its use for improving wrinkles has also been increasing. Ursolic acid is a pentacyclic triterpene acid found in plants such as rosemary, and is known to inhibit the decomposition of collagen in the skin by reducing the expression of matrix metalloproteinase. For this reason, it is often incorporated into cosmetics to improve wrinkles. Ursolic acid is incorporated into cosmetics either as it is or as a ursolate salt. L-ascorbic acid is a type of organic compound with a lactone structure, and is used in anti-wrinkle cosmetics because it promotes collagen production. Ascorbic acid is used as it is or as a derivative. Known derivatives of ascorbic acid include magnesium ascorbyl phosphate, ascorbyl glucoside, 3-O-ethyl ascorbic acid, and ascorbyl tetrahexyldecanoate. Retinol is an oil-soluble vitamin belonging to vitamin A, and is often incorporated into cosmetics as an anti-wrinkle agent because of its effect of promoting the production of epidermal hyaluronic acid. Retinol can also be used as a derivative. Examples of retinol derivatives include retinal, retinoic acid, retinol acetate, retinol propionate, and retinol palmitate. Among the representative anti-wrinkle ingredients, niacinamide is the ingredient of first choice as an active ingredient for wrinkle improvement because of its low irritation. On the other hand, in order to impart wrinkle improvement effects, a high content of niacinamide in cosmetics is required, about 3 to 7 mass%, and it is known that a high content of niacinamide reduces the feeling of use, and empirically, it has been recognized that a content of 3 mass% or more causes stickiness. Technologies for cosmetics containing a high content of niacinamide are disclosed in Patent Documents 4, 5, 6, and 7. Although these technologies achieve a certain degree of effect in suppressing stickiness caused by the active ingredients, they do not achieve the effect of giving the impression that wrinkles have been instantly improved. Even with cosmetics containing tranexamic acid, ursolic acid, L-ascorbic acid, and retinol, conventional technology has been unable to achieve the immediate effect of improving wrinkles. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2018-172379 A [Patent Document 2] Patent Publication No. 2022-055773 [Patent Document 3] WO2018 / 143061 publication [Patent Document 4] Patent Publication No. 2022-82669 [Patent Document 5] JP 2019-131553 A [Patent Document 6] JP 2020-128363 A [Patent Document 7] JP 2019-131547 A Summary of the Invention [Problem to be solved by the invention]

[0007] The present invention aims to provide a cosmetic product that gives the impression of immediate wrinkle improvement, is free of stickiness, and has an excellent moisturizing effect, particularly a cosmetic product that contains niacinamide, tranexamic acid, ursolic acid, L-ascorbic acid, and retinol as anti-wrinkle agents, and has an immediate wrinkle improvement effect and an excellent usability. [Means for solving the problem]

[0008] The present invention has the following configuration. (1) A cosmetic preparation containing the following (A), (B), (C), (D) and (E). (A) (Sodium acrylate / sodium acryloyldimethyl taurate) copolymer and / or (hydroxyethyl acrylate / sodium acryloyldimethyl taurate) copolymer, in an amount of 0.75 to 4% by mass relative to the total amount of the cosmetic (B) Silicone elastomer, 1 to 4.5% by mass based on the total amount of the cosmetic (C) Oil containing one or more selected from triethylhexanoin, diphenylsiloxyphenyl trimethicone, diisostearyl malate, and di(isostearyl / phytosteryl) dimer dilinoleate (D)Water (E) Anti-wrinkle agents (2) The cosmetic preparation according to (1), wherein the silicone elastomer (B) comprises one or more selected from the group consisting of dimethicone / vinyl dimethicone crosspolymer, dimethicone / phenylvinyl dimethicone crosspolymer, and vinyl dimethicone / lauryl dimethicone crosspolymer. (3) The cosmetic according to (1) or (2), further comprising (D) water in an amount of 50 to 80% by mass based on the total amount of the cosmetic. (4) (C) A cosmetic according to any one of (1) to (3), containing 10 to 30 mass% of an oil containing one or more selected from triethylhexanoin, diphenylsiloxyphenyl trimethicone, diisostearyl malate, and di(isostearyl / phytosteryl) dimer dilinoleate, based on the total mass of the cosmetic. (5) (E) A cosmetic preparation according to any one of (1) to (4), wherein the anti-wrinkle agent comprises one or more selected from niacinamide, tranexamic acid, ursolic acid, L-ascorbic acid and retinol. Effect of the Invention

[0009] The present invention provides a cosmetic which gives the feeling that wrinkles have been instantly improved immediately after application of the cosmetic to the skin, has no sticky feeling, and has an excellent moisturizing feeling. If consumers can get a sense of immediate wrinkle improvement (skin returns to its original state when the face is washed, but this is a temporary sensation that wrinkles are visually and cutaneously absent immediately after application. Hereinafter, this may be referred to as an immediate wrinkle-concealing effect or immediate wrinkle-improving effect), they will be able to continue using the cosmetic product without giving up, and as a result, a high wrinkle-improving effect (fundamental true wrinkle-improving effect) can be expected from the drug (anti-wrinkle agent) when used continuously for a long period of time. Generally, cosmetics for improving wrinkles gradually show their effect after long-term continuous use on the skin due to the properties of the anti-wrinkle agents that can be contained in the cosmetics, but there have been many cases where consumers give up on products where they are uncertain whether they are effective or not, and do not continue to purchase them, due to their high cost. Furthermore, products that have a particular poor feel when used (such as "stickiness") that is characteristic of anti-wrinkle agents that are formulated at high concentrations in the hope of achieving a high anti-wrinkle effect in the formulation are problematic, as they prevent consumers from using the product continuously, even if they know that it will have a positive effect on the skin in the future, and they eventually stop using the cosmetics altogether. The cosmetic composition of the present invention, which has an immediate wrinkle concealing effect and is non-sticky and has a moisturizing feel, is expected to encourage continued use by consumers, which is an extremely superior effect not seen in the prior art. The cosmetic composition of the present invention is not limited to cosmetics intended to improve wrinkles, but is optimal for such cosmetics. In particular, anti-wrinkle agents containing one or more selected from niacinamide, tranexamic acid, ursolic acid, L-ascorbic acid, and retinol are highly valued by consumers, and the present invention, which contains the anti-wrinkle agent and has a moisturizing and non-sticky feel, is very useful. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] The present invention relates to a cosmetic preparation that gives the user a visual and sensory impression of wrinkle improvement immediately after application to the skin and also has an excellent feel when used. This technology is particularly effective for cosmetics that contain anti-wrinkle agents (niacinamide, tranexamic acid, ursolic acid, L-ascorbic acid, and retinol) for improving wrinkles. That is, the present invention relates to a cosmetic preparation which contains (A) 0.75 to 4 mass% of a (sodium acrylate / sodium acryloyldimethyltaurate) copolymer and / or a (hydroxyethyl acrylate / sodium acryloyldimethyltaurate) copolymer based on the total amount of the cosmetic preparation, (B) 1 to 4.5 mass% of a silicone elastomer based on the total amount of the cosmetic preparation, (C) one or more oils selected from triethylhexanoin, diphenylsiloxyphenyl trimethicone, diisostearyl malate, and di(isostearyl / phytosteryl) dimer dilinoleate, (D) water, and (E) an anti-wrinkle agent, which provides a feeling that wrinkles have been improved immediately after use and is non-sticky and has an excellent moisturizing feel. The cosmetic preparation of the present invention includes quasi-drugs. The components of the present invention are described in detail below. In this specification, the expression "A to B (A and B are numbers)" means a numerical range including the values ​​of A and B, that is, A or more and B or less.

[0011] <Component (A): (Sodium acrylate / sodium acryloyldimethyl taurate) copolymer and / or (hydroxyethyl acrylate / sodium acryloyldimethyl taurate) copolymer> The cosmetic of the present invention contains 0.75 to 4 mass % of component (A) (sodium acrylate / sodium acryloyldimethyltaurate) copolymer and / or (hydroxyethyl acrylate / sodium acryloyldimethyltaurate) copolymer relative to the total mass of the cosmetic. The component (A) contained in the cosmetic of the present invention; (sodium acrylate / sodium acryloyldimethyltaurate) copolymer and / or (hydroxyethyl acrylate / sodium acryloyldimethyltaurate) copolymer, is an organic polymer having a structure derived from an acrylamide structure (CH2=CH-CO-NH-) in the molecule, and is a copolymer having two or more types of constituent units. The (sodium acrylate / sodium acryloyldimethyltaurate) copolymer is a copolymer of sodium acrylate and sodium acryloyldimethyltaurate, and commercially available products can be used. For example, SIMULGEL EG manufactured by SEPPIC (France) can be used. SIMULGEL EG is a mixed raw material consisting of 37.5% (sodium acrylate / sodium acryloyldimethyltaurate) copolymer, 22.5% by mass isohexadecane, 7.5% by mass polysorbate 80, 2.5% by mass sorbitan oleate, and 30% by mass water. The (hydroxyethyl acrylate / sodium acryloyldimethyl taurate) copolymer is a copolymer of hydroxyethyl acrylic acid and sodium acryloyldimethyl taurate, and commercially available products can be used. For example, SIMULGEL NS, SEPINOV EMT10, etc. manufactured by SEPPIC (France) can be used. SIMULGEL NS is a mixed raw material consisting of 37.5 mass% (hydroxyethyl acrylate / sodium acryloyldimethyl taurate) copolymer, 25.5 mass% squalane, 5.5 mass% polysorbate 60, 30 mass% water, and 1.5 mass% sorbitan isostearate. SEPINOV EMT10 is 100 mass% (hydroxyethyl acrylate / sodium acryloyldimethyl taurate) copolymer. The (sodium acrylate / sodium acryloyldimethyltaurate) copolymer and / or (hydroxyethyl acrylate / sodium acryloyldimethyltaurate) copolymer, when present in a specific amount in the composition together with other essential components described below, act to provide an immediate wrinkle improvement effect and are components that contribute greatly to the effect. In addition, component (A) also exerts an effect of suppressing the stickiness of the cosmetic composition caused by the high content of anti-wrinkle agent (E) and the specific oil of component (C). In the present invention, the (sodium acrylate / sodium acryloyldimethyl taurate) copolymer and / or (hydroxyethyl acrylate / sodium acryloyldimethyl taurate) copolymer, which is component (A), is contained in an amount of 0.75 to 4 mass% relative to the total amount of the cosmetic, preferably 1 to 4 mass% relative to the total amount of the cosmetic, more preferably 1.5 to 4 mass% relative to the total amount of the cosmetic, even more preferably 1.8 to 4 mass% relative to the total amount of the cosmetic, and even more preferably 2.5 to 4 mass% relative to the total amount of the cosmetic.

[0012] <Component (B): Silicone elastomer> The cosmetic composition of the present invention contains a silicone elastomer. Silicone elastomer mainly refers to a structure in which dimethyl silicone is three-dimensionally crosslinked. The cosmetic of the present invention contains 1 to 4.5% by mass of silicone elastomer based on the total amount of the cosmetic. Preferably, the silicone elastomer (B) is present in an amount of 1 to 3% by mass based on the total amount of the cosmetic, more preferably 1.5 to 3% by mass based on the total amount of the cosmetic, and even more preferably 1.5 to 2.5% by mass based on the total amount of the cosmetic. Silicone elastomers have been used in the past in makeup cosmetics and the like because they have a soft focus effect, but the composition of the present invention, that is, the inclusion of a specific amount of silicone elastomer together with other essential components, achieves an immediate wrinkle improvement effect and a good feel when used. If the silicone elastomer exceeds 4.5% by mass, the moisturizing feeling decreases and a dry feeling specific to silicone elastomers also occurs, which is not preferable. The silicone elastomer (B) of the present invention preferably contains one or more members selected from the group consisting of dimethicone / vinyl dimethicone crosspolymer, dimethicone / phenylvinyl dimethicone crosspolymer, and vinyl dimethicone / lauryl dimethicone crosspolymer. A detailed description of dimethicone / vinyl dimethicone crosspolymer, dimethicone / phenylvinyl dimethicone crosspolymer and vinyl dimethicone / lauryl dimethicone crosspolymer is as follows: The (dimethicone / vinyl dimethicone) crosspolymer is a dimethylpolysiloxane crosslinked with divinyldimethylpolysiloxane. Commercially available products may be used, such as KSG-15 and KSG-16 manufactured by Shin-Etsu Chemical Co., Ltd. KSG-15 is a mixed raw material consisting of 10% by mass of (dimethicone / vinyl dimethicone) crosspolymer and 90% by mass of dimethicone. KSG-16 is a mixed raw material consisting of 30% by mass of (dimethicone / vinyl dimethicone) crosspolymer and 70% by mass of dimethicone. The (dimethicone / phenylvinyldimethicone) crosspolymer is a dimethylpolysiloxane copolymer crosslinked with phenylvinyldimethylpolysiloxane. Commercially available products may be used, such as KSG-18 manufactured by Shin-Etsu Chemical Co., Ltd. KSG-18 is a mixed raw material consisting of 20% by mass of (dimethicone / phenylvinyldimethicone) crosspolymer and 80% by mass of diphenylsiloxyphenyltrimethicone. (Vinyl dimethicone / lauryl dimethicone) crosspolymer is a crosslinked product of lauryl dimethicone and divinyl dimethicone. Commercially available products may be used, such as KSG-43 manufactured by Shin-Etsu Chemical Co., Ltd. KSG-43 is a mixed raw material consisting of 35% by mass of (vinyl dimethicone / lauryl dimethicone) crosspolymer and 65% by mass of triethylhexanoin.

[0013] In the cosmetic preparation of the present invention, the mass % ratio (A:B) of component (A) to component (B) is not particularly set and limited, but it is clear from the results of the free answer in this test that in Examples 3, 4, 5, 16, and 17, in which the content of component (A) is approximately the same as the content of component (B) (Example 2), or in which the content of component (A) is greater than the content of component (B), there is a tendency for more immediate wrinkle improvement effects and stickiness inhibition effects / moisturizing feeling to be achieved at the same time as the content of component (A) in the composition increases, and therefore it has been determined that when a higher level of quality is required in the formulation design, the following ratio is even more preferable. The mass % ratio (A:B) of the (A) component to the (B) component is 0.64:1 to 3:1, preferably 0.75:1 to 3:1, more preferably 1:1 to 3:1, even more preferably 1.25:1 to 3:1, and even more preferably 1.75:1 to 3:1. In this case, the silicone elastomer of the (B) component is preferably 1 mass % or more, and more preferably more than 1 mass %. In addition, the silicone elastomer of the (B) component is preferably 4.5 mass % or less, preferably 3 mass % or less, preferably not more than 3 mass %, and more preferably 2.5 mass % or less from the viewpoint of moisturizing feeling.

[0014] <Component (C) Oil containing one or more selected from triethylhexanoin, diphenylsiloxyphenyl trimethicone, diisostearyl malate, and di(isostearyl / phytosteryl) dimer dilinoleate> The cosmetic composition of the present invention contains, as component (C), an oil containing one or more selected from triethylhexanoin, diphenylsiloxyphenyl trimethicone, diisostearyl malate, and di(isostearyl / phytosteryl) dimer dilinoleate. Component (C) of the present invention contributes to an immediate wrinkle improving effect and a good moisturizing feeling. The detailed description of the oil essentially contained as component (C) is as follows: Triethylhexanoin is a triester of 2-ethylhexanoic acid and glycerin. Commercially available products may be used. Examples of commercially available products include IOTG manufactured by Nippon Fine Chemicals Co., Ltd. and TIO manufactured by Nisshin Oillio Group, Ltd. Commercially available products mixed with component (B) may also be used. Examples include KSG-43 manufactured by Shin-Etsu Chemical Co., Ltd. (a mixed raw material consisting of 35% by mass of (vinyl dimethicone / lauryl dimethicone) crosspolymer and 65% by mass of triethylhexanoin). Diphenylsiloxyphenyl trimethicone is a methylphenyl polysiloxane in which some of the methyl groups (-CH3) of dimethicone are replaced with phenyl groups (C6H5) or phenyl groups (C6H5) and trimethylsiloxy groups (-OSi(CH3)3). Commercially available products may be used. Examples of commercially available products include KF-56A manufactured by Shin-Etsu Chemical Co., Ltd. and DOWSIL (Dow Chemical Japan). TM SH556 Fluid. A commercially available product in the form of a mixture with component (B) may also be used. For example, KSG-18 (a mixed raw material consisting of 20% by mass of (dimethicone / phenylvinyldimethicone) crosspolymer and 80% by mass of diphenylsiloxyphenyltrimethicone) manufactured by Shin-Etsu Chemical Co., Ltd. may be used. Diisostearyl malate is a diester of malic acid and isostearyl alcohol. Commercially available products may be used. Examples of commercially available products include Cosmol 222H manufactured by Nisshin Oillio Group Co., Ltd. and Neosolue-DiSM manufactured by Nippon Fine Chemicals Co., Ltd. Dimer dilinoleate di(isostearyl / phytosteryl) is a diester of dimer dilinoleate with isostearyl alcohol and phytosterol. Commercially available products may be used. Examples of commercially available products include LUSPLAN PI-DA manufactured by Nippon Fine Chemicals Co., Ltd. The cosmetic of the present invention essentially contains one or more oils selected from triethylhexanoin, diphenylsiloxyphenyl trimethicone, diisostearyl malate, and di(isostearyl / phytosteryl) dimer dilinoleate as component (C). Other than the four oils specified in (C), any oils that can be contained in a cosmetic can be contained in combination. The total amount of one or more oils selected from triethylhexanoin, diphenylsiloxyphenyl trimethicone, diisostearyl malate, and di(isostearyl / phytosteryl) dimer dilinoleate in (C) and other oils that are optionally contained is preferably 10 to 30% by mass, more preferably 15 to 30% by mass, based on the total amount of the cosmetic. If it is less than 10% by mass, there is a risk that the moisturizing feeling is insufficient. If it exceeds 30% by mass, there is a risk of stickiness. It is preferable that one or more oils selected from triethylhexanoin, diphenylsiloxyphenyl trimethicone, diisostearyl malate, and di(isostearyl / phytosteryl) dimer dilinoleate are contained in an amount of 40% by mass or more, preferably 50% by mass or more, more preferably 65% ​​by mass or more, and even more preferably 70% by mass or more, based on the total amount of oils including any oil. Among them, triethylhexanoin is preferably selected first in the present invention because it has a good feeling when used. When two or more components are combined from the (C) component, it is more preferable to include triethylhexanoin. When it is desired to further increase the moisturizing property, it is preferable to include di(isostearyl / phytosteryl) dimer dilinoleate.

[0015] <(D) Component Water> The cosmetic of the present invention contains water. Any water may be used as long as it can be contained in the cosmetic. Purified water is preferred. The cosmetic of the present invention preferably contains water (D) in an amount of 50 to 80% by mass based on the total amount of the cosmetic.

[0016] <Ingredient (E) Anti-wrinkle agent> The cosmetic of the present invention contains component (E): an anti-wrinkle agent. The anti-wrinkle agent may be any agent that can be contained in a cosmetic. For example, niacinamide, tranexamic acid, ursolic acid, L-ascorbic acid, and retinol are preferred. When a certain amount of these components is contained in a composition, it can be made into a quasi-drug, so it is preferable to use an anti-wrinkle agent that contains one or more components selected from these components. By adopting the configuration of the present invention, even if the anti-wrinkle agent is sticky (for example, niacinamide, etc.), the final composition is hardly sticky, so that a formulation can be designed to contain the required amount of anti-wrinkle agent without worrying about the stickiness derived from the anti-wrinkle component. (Niacinamide) Niacinamide, one of the components (E) of the present invention, is an amide compound of nicotinic acid, and is a water-soluble vitamin also known as nicotinamide (vitamin B3 / niacin). Niacinamide may be an extract from a natural product, or may be a product synthesized by a known method. Specifically, those listed in the Japanese Pharmacopoeia can be used. Niacinamide is known to have a blood circulation promoting effect, a rough skin improving effect, a melanin production inhibiting effect, and a whitening effect in addition to a wrinkle improving effect. (Tranexamic acid) Tranexamic acid, one of the components (E) of the present invention, is a type of artificially synthesized amino acid that has the function of inhibiting the action of plasmin, which causes inflammation and allergies. This effect is known to improve skin conditions, and it is popular to incorporate it into cosmetics. (Ursolic Acid) Ursolic acid, one of the components (E) of the present invention, is a pentacyclic triterpene acid contained in plants such as rosemary, and is known to inhibit the decomposition of collagen contained in the skin by reducing the expression of matrix metalloproteinase. Therefore, it has often been incorporated into cosmetics for the purpose of improving wrinkles. Ursolic acid may be incorporated into cosmetics as it is, or may be incorporated as a ursolate salt. (L-ascorbic acid) L-ascorbic acid, one of the components (E) of the present invention, is a type of organic compound having a lactone structure, and is blended into anti-wrinkle cosmetics because it has the effect of promoting collagen production. Ascorbic acid may be blended as it is, or may be blended as a derivative. Examples of ascorbic acid derivatives include magnesium ascorbyl phosphate, ascorbyl glucoside, 3-O-ethyl ascorbic acid, and ascorbyl tetrahexyldecanoate. (Retinol) Retinol, one of the components (E) of the present invention, is an oil-soluble vitamin belonging to vitamin A, and has the effect of promoting the production of epidermal hyaluronic acid, so it is formulated as an anti-wrinkle agent.Retinol may be formulated as it is, or may be formulated as a derivative.Examples of retinol derivatives include retinal, retinoic acid, retinol acetate, retinol propionate, and retinol palmitate. In the cosmetic composition of the present invention, when component (E) is niacinamide, tranexamic acid, ursolic acid, L-ascorbic acid, or retinol, the preferred contents are as follows: The content of niacinamide in the case of the cosmetic is preferably 3% by mass or more. When niacinamide is contained in an amount of 3% by mass or more, the cosmetic can be made into a cosmetic for improving wrinkles. In order to obtain an improvement effect on skin wrinkles at a level close to that of quasi-drugs, the content of component (E) niacinamide is 3% by mass or more, preferably 3 to 10% by mass, more preferably 3 to 8% by mass, based on the total amount of the cosmetic. The content of tranexamic acid in the case of tranexamic acid is preferably 1% by mass or more. When tranexamic acid is contained in an amount of 1% by mass or more, it can be made into a cosmetic for improving wrinkles. In order to obtain a level of improving skin wrinkles close to that of quasi-drugs, the content of component (E) tranexamic acid is 1% by mass or more, preferably 1 to 3% by mass, and more preferably 1 to 2% by mass, based on the total amount of the cosmetic. The content of ursolic acid is preferably 0.1% by mass or more. When ursolic acid is contained in an amount of 0.1% by mass or more, it can be used as a cosmetic for improving wrinkles. In order to obtain a level of improving skin wrinkles close to that of quasi-drugs, the content of component (E) ursolic acid is 0.1% by mass or more, preferably 0.1 to 0.5% by mass, and more preferably 0.1 to 0.3% by mass, based on the total amount of the cosmetic. The content of L-ascorbic acid is preferably 3% by mass or more. When L-ascorbic acid is contained in an amount of 3% by mass or more, it can be made into a cosmetic for improving wrinkles. In order to obtain a level of improving skin wrinkles close to that of a quasi-drug, the content of component (E) L-ascorbic acid is 3% by mass or more, preferably 3 to 10% by mass, and more preferably 3 to 8% by mass, based on the total amount of the cosmetic. The content of retinol is preferably 0.05% by mass or more. When retinol is contained in an amount of 0.05% by mass or more, it can be made into a cosmetic for improving wrinkles. In order to obtain a level of improving skin wrinkles close to that of quasi-drugs, the content of component (E) retinol is 0.03% by mass or more, preferably 0.03 to 0.1% by mass, more preferably 0.05 to 0.1% by mass, and even more preferably 0.05 to 0.08% by mass, based on the total amount of the cosmetic. In the cosmetic composition of the present invention, the preferred content of component (E) varies slightly depending on the component, but is generally preferably from 3 to 10 mass %, and more preferably from 5 to 8 mass %. In summary, in the case of niacinamide or L-ascorbic acid as the (E) anti-wrinkle agent, the amount is 3 to 10 mass %, preferably 3 to 8 mass %, in the case of tranexamic acid as the (E) anti-wrinkle agent, the amount is 1 to 3 mass %, preferably 1 to 2 mass %, in the case of ursolic acid as the (E) anti-wrinkle agent, the amount is 0.1 to 0.5 mass %, preferably 0.1 to 0.3 mass %, and in the case of retinol as the (E) anti-wrinkle agent, the amount is 0.03 to 0.1 mass %, preferably 0.05 to 0.08 mass %.

[0017] (optional ingredient) In addition to the components (A), (B), (C), (D), and (E), the cosmetic preparation of the present invention may contain polyhydric alcohols, surfactants, oils (oils other than those listed in the section on component C), thickeners, chelating agents, preservatives, pH adjusters, UV absorbers, UV scattering agents, other functional ingredients (biologically active ingredients), fragrances, pigments, solvents, extracts from natural products, and the like, provided such additions do not impair the effects of the present invention. Examples of the polyhydric alcohol that may be optionally contained include ethylene glycol, butylene glycol (BG), polyethylene glycol, butyl ethyl propane diol, polypropylene glycol copolymer, propylene glycol, dipropylene glycol, glycerin, diglycerin, pentylene glycol, ethylhexylglycerin, maltitol, mannitol, sorbitol, and xylitol. Examples of oils other than (C) that may be optionally contained include natural animal and vegetable oils and semi-synthetic oils and fats, hydrocarbon oils, ester oils, silicone oils, and the like. For example, natural animal and vegetable oils and semi-synthetic oils and fats include meadowfoam oil, Argania spinosa kernel oil, Pulchenitia volubilis seed oil, avocado oil, linseed oil, almond oil, olive oil, wheat germ oil, sesame oil, rice germ oil, rice bran oil, safflower oil, soybean oil, evening primrose oil, corn oil, rapeseed oil, horse fat, palm oil, palm kernel oil, castor oil, sunflower oil, jojoba oil, macadamia nut oil, coconut oil, hardened coconut oil, peanut oil, and lanolin. Examples of the hydrocarbon oil include isohexadecane, hydrogenated polyisobutene, squalane, squalene, mineral oil, olefin oligomer, hydrogenated polydecene, petrolatum, tridecane, undecane, etc. Examples of the ester oil include propylene glycol diisostearate, glycol distearate, dipentaerythrityl tetra(hydroxystearate / isostearate), isodecyl benzoate, neopentyl glycol dicaprylate, glyceryl diisostearate, dipentaerythrityl hexa(hydroxystearate / stearic acid / rosin acid), trimethylolpropane triethylhexanoate, di-2-ethylhexyl succinate, pentaerythrityl tetra(behenate / benzoate / ethylhexanoate), tetraisostearate, di ... Examples of the oils include pentaerythrityl triethylhexanoate, glyceryl isostearate / myristic acid, cetyl ethylhexanoate, 1,3-butylene glycol diisononanoate, 1,3-butylene glycol di-2-ethylhexanoate, dipropylene glycol diisononanoate, dipropylene glycol di-2-ethylhexanoate, isononyl isononanoate, phytosteryl macadamiate, ethylhexyl palmitate, isostearyl neopentanoate, octyldodecyl stearoyloxystearate, etc. Examples of silicone oils include dimethicone, phenyl trimethicone, amino-modified silicone, cyclohexasiloxane, cyclopentasiloxane, etc.

[0018] The cosmetic of the present invention is preferably an oil-in-water emulsion cosmetic, and may be in the form of a milky lotion, cream, skin lotion, cosmetic liquid, beauty essence, gel, or the like. EXAMPLES

[0019] The present invention will be described in detail below with reference to examples and comparative examples. <Comparative test of cosmetics based on the compositions of Examples 1 to 17 and Comparative Examples 1 to 7> 1. Test Method Cosmetics having the compositions shown in Tables 1 and 2 below were prepared by conventional methods. The numbers in the tables are shown in mass % with the total amount of the cosmetic being 100 mass %. In the tables, "-" indicates that it was not possible to obtain a ratio or perform a calculation. Furthermore, SIMULGEL EG, which is listed in the table, is a mixed raw material consisting of 37.5% by mass of (sodium acrylate / sodium acryloyldimethyltaurate) copolymer, 22.5% by mass of isohexadecane, 7.5% by mass of polysorbate 80, 2.5% by mass of sorbitan oleate, and 30% by mass of water.

[0020] [Table 1]

[0021] [Table 2]

[0022] Examples 1 to 17 in Table 1 are cosmetics (oil-in-water emulsion cosmetics) containing (A) 1.125 to 3.75 mass% of a (sodium acrylate / sodium acryloyldimethyltaurate) copolymer, (B) 1 to 4.5 mass% of a silicone elastomer, (C) 18.175 to 26.175 mass% of an oil including one or more selected from specific oils (triethylhexanoin, diphenylsiloxyphenyl trimethicone, diisostearyl malate, di(isostearyl / phytosteryl) dimer dilinoleate), (D) 62 to 73 mass% of water, and (E) 5 mass% of an anti-wrinkle agent. On the other hand, Comparative Examples 1 to 7 in Table 2 are cosmetics (oil-in-water emulsion cosmetics) that (A) contain no (sodium acrylate / sodium acryloyldimethyltaurate) copolymer or contain 0.1875 to 1.125 mass% thereof, (B) contain no silicone elastomer or contain 0.15 to 1.5 mass% thereof, (C) contain no specific oil but contain 4.175 to 19.175 mass% of oil or contain 15.675 to 18.6125 mass% of oil containing one or more oils selected from (triethylhexanoin, diphenylsiloxyphenyl trimethicone, diisostearyl malate, di(isostearyl / phytosteryl) dimer dilinoleate), (D) contain 72 to 87 mass% of water, and (E) contain 5 mass% of an anti-wrinkle agent.

[0023] The cosmetics of Examples 1 to 17 and Comparative Examples 1 to 7 were applied to the skin and evaluated according to the following criteria. The sensory evaluation was conducted by five experienced and specialized sensory evaluators who discussed the sensation of use after application and determined the results.

[0024] <Evaluation of immediate wrinkle-concealing effect on skin immediately after application> After the cosmetic preparation was thoroughly absorbed into the skin, it was left for 5 minutes, and the fully absorbed skin was visually observed and subjected to a sensory evaluation to determine whether wrinkles had been hidden. ◎: I felt it had a great effect in hiding wrinkles. ○: I felt it had a wrinkle-hiding effect. △: I felt it had some wrinkle-hiding effect. ×: No wrinkle-hiding effect was observed

[0025] <Evaluation of stickiness suppression> An appropriate amount of the cosmetic was applied to the skin, and a sensory evaluation was performed regarding the sticky feeling that occurred immediately after the cosmetic was blended into the skin in a circular motion with the fingers. ◎: No stickiness was felt ○: Almost no stickiness was felt △: Slightly sticky ×: Sticky feeling

[0026] <Evaluation of moisturizing sensation> After the cosmetic preparation was thoroughly absorbed into the skin, it was left for 5 minutes, and the applied area was gently rubbed with a finger to perform a sensory evaluation of the moisturizing sensation. ◎: I felt a strong sense of moisturization. ○: I felt a moisturizing sensation △: Slightly moisturizing ×: I didn't feel any moisturizing sensation.

[0027] 2. Test Results The evaluation results for each item are shown in the lower part of Tables 1 and 2. The cosmetics of Examples 1 to 17 were evaluated as having an immediate wrinkle improvement effect (evaluated as ◎ and ○). In addition, the stickiness caused by the high blending of (E) anti-wrinkle agent (niacinamide) at 5 mass % was suppressed, and the cosmetics had an excellent feeling of moisturization. As the content of silicone elastomer increased to 3 mass % and 4.5 mass %, the moisturizing feeling tended to decrease (Examples 9 and 10). Diphenylsiloxyphenyl trimethicone seemed to be an ingredient with a low moisturizing feeling (Example 6), but when it was used in combination with triethylhexanoin or dimer dilinoleate di(isostearyl / phytosteryl) the moisturizing feeling improved (Examples 12 and 14). Although di(isostearyl / phytosteryl) dimer dilinoleate has moisturizing properties, it tends to be sticky by itself (Example 8). However, by using it in combination with diphenylsiloxyphenyl trimethicone or triethylhexanoin or by increasing the amount of (A) (sodium acrylate / sodium acryloyldimethyltaurate) copolymer, the stickiness was suppressed, and both the immediate wrinkle concealing effect and moisturizing feeling were excellent (Examples 14, 15, 16, and 17). On the other hand, Comparative Example 1 lacking component (A), Comparative Examples 4 and 5 lacking component (B), and Comparative Examples 2 and 3 lacking component (C) were rated x in one of the items, and it was not possible to achieve both an immediate wrinkle concealing effect and a favorable feel when used. Also, the results of Comparative Examples 6 and 7 showed that when the contents of components (A) and (B) were low, the immediate wrinkle concealing effect was rated x or △, and furthermore, the stickiness suppression effect and moisturizing feel were insufficient.

[0028] As described above, it was found that the composition of the present invention can provide a cosmetic composition that gives the impression of immediate wrinkle improvement immediately after application to the skin, and has no sticky feeling and excellent moisturizing feeling. Since the composition does not feel sticky even when it contains a wrinkle improvement agent at the level of a quasi-drug (for example, 3 to 8 mass % for niacinamide), the impression of immediate wrinkle improvement (visual and cutaneous sensation that wrinkles have disappeared) was felt immediately after application, and the moisturizing feeling was felt highly, it was determined that the product of the present invention can be used continuously by consumers without giving up. Furthermore, a cosmetic composition that can be expected to have a high wrinkle improvement effect (fundamental true wrinkle improvement effect) due to the original drug (anti-wrinkle agent) used for long-term continuous use was provided. Formulation examples and evaluations of the cosmetic composition of the present invention are shown below.

[0029] <Formulation example 1: Emulsion> Blend amount (mass%) Niacinamide 8 SIMULGEL EG 5 Macadamia nut fatty acid phytosteryl 2 Diisostearyl malate 1 Behenyl alcohol 0.5 Hydrogenated Polydecene 4 Triethylhexanoin 5 Diphenylsiloxyphenyl Trimethicone 2 Di(isostearyl / phytosteryl) dimer dilinoleate 1 Glyceryl stearate 0.4 Sorbitan oleate 0.3 Polysorbate 60 0.4 KSG-16 (contains 30% by mass of (dimethicone / vinyl dimethicone) crosspolymer) 3 Tremella polysaccharide 0.05 Phenoxyethanol 0.2 BG5 Glycerin 10 Purified water 52.15 (evaluation) The emulsion of Formulation Example 1 was prepared by a conventional method. The resulting emulsion had excellent stickiness and moisturizing properties, and was effective in concealing wrinkles on the skin immediately after application. In addition, a milky lotion was prepared in the same manner, except that SIMULGEL EG in Formulation Example 1 was replaced with SIMULGEL NS (Formulation Example 2). The resulting milky lotion was not sticky, had an excellent moisturizing feel, and had an excellent effect of concealing wrinkles on the skin immediately after application. Furthermore, an emulsion was prepared in the same manner as in Formulation Example 1 except that the 8% by mass of niacinamide was replaced with 1.5% by mass of tranexamic acid and the remaining amount short of 100% by mass was adjusted with water (Formulation Example 3). The resulting emulsion was not sticky, had an excellent moisturizing feel, and had an excellent effect of concealing wrinkles on the skin immediately after application. Similarly, emulsions were prepared by standard methods for the following compositions: 8% by mass of niacinamide in Formulation Example 1 was replaced with 0.2% by mass of ursolic acid, with the remainder adjusted to make up 100% by mass with water (Formulation Example 4); 5% by mass of L-ascorbic acid was replaced with 5% by mass with water, with the remainder adjusted to make up 100% by mass with water (Formulation Example 5); and 0.06% by mass of retinol was replaced with 0.06% by mass with water, with the remainder adjusted to make up 100% by mass with water (Formulation Example 6). All of the obtained emulsions were not sticky, had an excellent moisturizing feel, and were excellent in hiding wrinkles on the skin immediately after application.

Claims

1. A cosmetic preparation comprising the following (A), (B), (C), (D) and (E). (A) (Sodium acrylate / Sodium acryloyldimethyltaurate) copolymer and / or (hydroxyethyl acrylate / Sodium acryloyldimethyltaurate) copolymer, in an amount of 0.75 to 4% by mass based on the total amount of the cosmetic (B) Silicone elastomer, 1 to 4.5% by mass based on the total amount of the cosmetic (C) an oil containing one or more selected from triethylhexanoin, diphenylsiloxyphenyl trimethicone, diisostearyl malate, and di(isostearyl / phytosteryl) dimer dilinoleate (D) Water (E) Anti-wrinkle agents

2. 2. The cosmetic preparation according to claim 1, wherein the silicone elastomer (B) comprises at least one member selected from the group consisting of dimethicone / vinyl dimethicone crosspolymer, dimethicone / phenylvinyl dimethicone crosspolymer, and vinyl dimethicone / lauryl dimethicone crosspolymer.

3. 3. The cosmetic according to claim 1, further comprising (D) water in an amount of 50 to 80% by mass based on the total amount of the cosmetic.

4. 3. The cosmetic according to claim 1 or 2, comprising (C) 10 to 30 mass% of an oil containing one or more selected from triethylhexanoin, diphenylsiloxyphenyl trimethicone, diisostearyl malate, and di(isostearyl / phytosteryl) dimer dilinoleate, based on the total amount of the cosmetic.

5. 3. The cosmetic preparation according to claim 1 or 2, wherein the anti-wrinkle agent (E) comprises one or more members selected from the group consisting of niacinamide, tranexamic acid, ursolic acid, L-ascorbic acid and retinol.

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