Cosmetic composition

Abstract

To provide a cosmetic composition that has a thick consistency and gives a moist feeling and non-stickiness when applied to the skin. The present invention provides a gelling agent containing agar, at least one compound (C) selected from the group consisting of diglycerin, a polyhydric alcohol compound (C1) having 4 to 6 carbon atoms other than diglycerin, and a compound (C2) having at least one of a polyethylene oxide structure and a polypropylene oxide structure, and water, wherein the gelling strength of the agar is 30 g / cm. 2 ~250g / cm 2 The cosmetic composition has a content of agar of 0.2% by mass to 1.2% by mass relative to the total mass of the cosmetic composition, and a content of diglycerin of 5% by mass to 30% by mass relative to the total mass of the cosmetic composition.

Description

[Technical Field]

[0001] The present disclosure relates to cosmetic compositions. [Background technology]

[0002] In recent years, consumer preferences for cosmetics that are applied directly to the skin (for example, lotions) have become more diverse. For example, various aspects such as the effectiveness of active ingredients, the distinctive feel when used, the appearance of the product, and the ease of use of the product can motivate consumers to purchase the product, and therefore the methods of product promotion have also become more diverse.

[0003] For example, Patent Document 1 describes a topical skin composition containing 0.1% by mass to 10% by mass of a water-soluble polymer, which is a mixture of agar with a weight-average molecular weight of 10,000 to 60,000 and xanthan gum in a mass ratio of 4:6 to 8:2, and 30% by mass or more of water. This topical skin composition is said to have good spreadability and compatibility with the skin, not cause drainage due to temperature changes, reduce the stickiness of xanthan gum, and be able to stably contain various other ingredients. Patent Document 2 describes an aqueous cosmetic containing component (A): agar with a weight-average molecular weight of 10,000 to 60,000, component (B): xanthan gum, and component (C): a water-soluble polymer other than components (A) and (B). This aqueous cosmetic is easy to remove with fingers, and is said to have a rich, moist, and fresh feel upon application, and to have a feeling of familiarity that melts into the skin. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] International Publication No. 2011 / 111854 [Patent Document 2] International Publication No. 2016 / 143663 Summary of the Invention [Problem to be solved by the invention]

[0005] BACKGROUND ART Cosmetic compositions that focus on a particular feeling of use or operability have been widely developed. However, it has been technically difficult to realize a cosmetic composition that combines the fundamentally contradictory sensations of "moisture" and "non-stickiness." A widely known method for imparting a "moisturizing feel" to a cosmetic composition is, for example, to incorporate a polyhydric alcohol into the cosmetic composition. However, cosmetic compositions incorporating a polyhydric alcohol often feel sticky when applied to the skin. Furthermore, a widely known method for imparting "non-stickiness" to a cosmetic composition is to prevent the cosmetic composition from adhering to the skin by blending metal fine particles, polymer fine particles, etc. However, cosmetic compositions blended with fine particles tend to have a reduced moisturizing feel due to the powder.

[0006]

[0003] In recent years, there has been an increasing demand for thick cosmetic compositions from the viewpoints of appearance and operability. A thick cosmetic composition can evoke a moisturizing feeling when visually recognized by a user, and can also have the effect of improving operability during use, such as by making it less likely to spill from the hands when applied to the skin. A commonly known method for imparting "thickness" to a cosmetic composition is to blend a water-soluble polymer into the cosmetic composition. However, cosmetic compositions blended with a water-soluble polymer tend to feel sticky when applied to the skin. In this way, "thickness" can be said to be a performance that is contradictory to "non-stickiness."

[0007] In view of the above circumstances, there is a demand for the development of a technology that can impart a "moisturizing feel," "non-stickiness," and "thickness" to cosmetic compositions.

[0008] An object of one embodiment of the present disclosure is to provide a cosmetic composition that has a thick consistency and provides a moisturizing feeling and a non-sticky feeling when applied to the skin. [Means for solving the problem]

[0009] Specific means for solving the above problems include the following embodiments. [1] Agar and Diglycerin and at least one compound (C) selected from the group consisting of a polyhydric alcohol compound (C1) having 4 to 6 carbon atoms other than diglycerin, and a compound (C2) having at least one of a polyethylene oxide structure and a polypropylene oxide structure; Water and Including, The agar jelly strength is 30g / cm 2 ~250g / cm 2 and the content of agar is 0.2% by mass to 1.2% by mass relative to the total mass of the cosmetic composition; A cosmetic composition, wherein the diglycerin content is 5% by mass to 30% by mass relative to the total mass of the cosmetic composition. [2] The cosmetic composition according to [1], wherein the compound (C2) is at least one selected from the group consisting of polyethylene glycol, polypropylene glycol, and compounds in which a glycerin skeleton, a diglycerin skeleton, or a glucose skeleton is modified with at least one of a polyethylene oxide chain and a polypropylene oxide chain. [3] The cosmetic composition according to [1], wherein the compound (C2) comprises at least one selected from the group consisting of methyl gluceth-10, methyl gluceth-20, PPG-10 methyl glucose, PPG-20 methyl glucose, PEG-6, PEG-20, PEG-32, PPG-9 diglyceryl, glycereth-26, PPG-24 glycereth-24, and PEG / PPG / polybutylene glycol-8 / 5 / 3 glycerin. [4] The cosmetic composition according to any one of [1] to [3], wherein the polyhydric alcohol compound (C1) comprises at least one selected from the group consisting of 1,3-butylene glycol, 3-methyl-1,3-butanediol, dipropylene glycol, pentylene glycol, 1,2-hexanediol, and hexylene glycol. [5] The cosmetic composition according to any one of [1] to [4], wherein the content ratio of compound (C) to diglycerin is 0.05 to 4 on a mass basis. [6] The cosmetic composition according to any one of [1] to [5], which has a viscosity at 25°C of 75 mPa·s to 4500 mPa·s. [7] The cosmetic composition according to any one of [1] to [6], further comprising an anti-inflammatory component, wherein the anti-inflammatory component comprises at least one selected from the group consisting of allantoin, dipotassium glycyrrhizinate, nicotinamide, and tranexamic acid. [Effects of the Invention]

[0010] According to one embodiment of the present disclosure, there is provided a cosmetic composition that has a thick consistency and provides a moisturizing feeling and a non-sticky feeling when applied to the skin. DETAILED DESCRIPTION OF THE INVENTION

[0011]

[0033] An example of an embodiment of the cosmetic composition of the present disclosure will be described in detail below. The explanation of the requirements described below may be based on a representative embodiment of the present disclosure, but the present disclosure is not limited to such an embodiment and can be implemented with appropriate modifications within the scope of the purpose of the present disclosure.

[0012] In the present disclosure, a numerical range indicated using "to" means a range that includes the numerical values ​​before and after "to" as the lower and upper limits, respectively. In the numerical ranges described in stages in the present disclosure, the upper or lower limit value described in a certain numerical range may be replaced with the upper or lower limit value of another numerical range described in stages. Furthermore, in the numerical ranges described in the present disclosure, the upper or lower limit value described in a certain numerical range may be replaced with a value shown in the examples.

[0013] In the present disclosure, a combination of two or more preferred embodiments is a more preferred embodiment. In the present disclosure, when a plurality of substances corresponding to each component are present in the cosmetic composition, the amount of each component in the cosmetic composition means the total amount of the plurality of substances present in the cosmetic composition, unless otherwise specified.

[0014] In the present disclosure, "mass %" and "weight %" are synonymous.

[0015] In the present disclosure, the term "process" includes not only an independent process but also a process that cannot be clearly distinguished from other processes, as long as the intended purpose of the process is achieved.

[0016] [Cosmetic composition] The cosmetic composition of the present disclosure comprises agar, at least one compound (C) selected from the group consisting of diglycerin, a polyhydric alcohol compound (C1) having 4 to 6 carbon atoms other than diglycerin, and a compound (C2) having at least one of a polyethylene oxide structure and a polypropylene oxide structure, and water, and the agar jelly strength is 30 g / cm 2 ~250g / cm 2 The content of agar is 0.2% by mass to 1.2% by mass relative to the total mass of the cosmetic composition, and the content of diglycerin is 5% by mass to 30% by mass relative to the total mass of the cosmetic composition.

[0017] The cosmetic composition of the present disclosure, having the above-described configuration, has a viscosity that provides a moist feeling and a non-sticky feeling when applied to the skin. That is, the cosmetic composition of the present disclosure selects as its components agar, diglycerin, a polyhydric alcohol compound (C1) having 4 to 6 carbon atoms other than diglycerin, and at least one compound (C) selected from the group consisting of a compound (C2) having at least one of a polyethylene oxide structure and a polypropylene oxide structure, and water, and by controlling the jelly strength of the agar, the agar content, and the diglycerin content, the cosmetic composition achieves a balance between the theoretically contradictory feel and performance of "moisture" and "non-stickiness," and "moisture" and "thickness."

[0018] In relation to the above points, the topical skin composition described in Patent Document 1 (WO 2011 / 111854; the same applies hereinafter) focuses on stickiness, but does not focus on achieving a balance between "non-stickiness" and "moisturizing feeling" and "thickness." Furthermore, the aqueous cosmetic composition described in Patent Document 2 (WO 2016 / 143663) contains low-molecular-weight agar, xanthan gum, and a water-soluble polymer, thereby improving ease of removal with fingers, stickiness, and freshness, etc., but the method of improvement is different from that of the cosmetic composition of the present disclosure.

[0019] In the present disclosure, viscosity is used as an index of "thickness." A "cosmetic composition having thickness" refers to a cosmetic composition having a viscosity of 75 mPa·s to 4500 mPa·s at 25°C. A cosmetic composition having thickness can evoke a moisturizing feeling in the user and can also have the effect of improving operability during use.

[0020] [Agar] The cosmetic composition of the present disclosure contains agar. In the cosmetic composition of the present disclosure, agar may function as a thickening agent. Agar can impart viscosity to the cosmetic composition.

[0021] The cosmetic composition of the present disclosure may contain one type of agar alone, or may contain two or more types of agar.

[0022] The strength of the agar jelly is set at 30g / cm to achieve both moisture and non-stickiness. 2 ~250g / cm 2 is. Agar jelly strength is 30g / cm 2 When the agar jelly strength is 250 g / cm or more, the cosmetic composition tends to give a moist feeling when applied to the skin. 2 If the amount is less than this, the cosmetic composition tends to feel non-sticky when applied to the skin. The jelly strength of agar is 50g / cm 2 ~250g / cm 2It is preferable that the density is 50 g / cm 2 ~220g / cm 2 More preferably, it is 75 g / cm 2 ~200g / cm 2 It is more preferable that:

[0023] In the present disclosure, the jelly strength of agar (unit: g / cm 2 The jelly strength according to the Nikkansui method is a value measured using a Nikkansui method jelly strength measuring device adopted by the Japan Agar Manufacturing Fisheries Association. A 1.5% agar solution was left at 20°C for 15 hours to solidify the gel, and the gel was measured at a surface of 1cm2. 2 This refers to the maximum load (unit: g) that can be withstood for 20 seconds.

[0024] When the cosmetic composition of the present disclosure contains two or more types of agar, the jelly strength of the two or more types of agar may be the same or different. When the cosmetic composition of the present disclosure contains two or more types of agar, the jelly strength of the agar means the jelly strength of the mixture of the two or more types of agar contained in the cosmetic composition.

[0025] The agar is not particularly limited as long as it is an agar that is commonly used in pharmaceuticals, quasi-drugs, and cosmetics.

[0026] Commercially available agar can be used. Examples of commercially available agar products include the Ina Agar (registered trademark) series, including AX-30, AX-100, AX-200, BX-100, BX-200, CS-120, UX-30, UX-100, UX-200, Ina, SV-100, USV-100, TR-100, UTR-100, CS-310, CS-320, CS-6, CS-7, CS-83, CS-33, CS-166, CS-200, CS-377, and Kalicorikan (all manufactured by Ina Food Industry Co., Ltd.).

[0027] The cosmetic composition of the present disclosure may contain two or more types of commercially available agar. Commercially available agar products have a jelly strength of 30 g / cm 2 ~250g / cm 2 UX-30, UX-100, UX-200, CS-120, CS-310, CS-320, SV-100, USV-100, TR-100, UTR-100, CS-166, and CS-377 are preferred in that they can be easily adjusted to a desired value within the above range.

[0028] The content of agar in the cosmetic composition of the present disclosure is 0.2% by mass to 1.2% by mass relative to the total mass of the cosmetic composition. When the content of agar relative to the total mass of the cosmetic composition is within the above range, the cosmetic composition tends to have a thick consistency. A cosmetic composition with a thick consistency can improve operability during use, such as being less likely to spill from the hands when applied to the skin. Furthermore, a cosmetic composition with a thick consistency can have the effect of evoking a moisturizing feeling when viewed. The content of agar is preferably 0.25% by mass to 1.0% by mass, and more preferably 0.3% by mass to 0.8% by mass, relative to the total mass of the cosmetic composition.

[0029] [Diglycerin] The cosmetic composition of the present disclosure includes diglycerin. Diglycerin can impart a moisturizing feel to the cosmetic composition.

[0030] Diglycerin is a compound represented by the molecular formula: O[CH2CH(OH)CH2OH]2, and is not particularly limited as long as it is a diglycerin that is commonly used in pharmaceuticals, quasi-drugs, and cosmetics.

[0031] Commercially available diglycerin can be used. Examples of commercially available diglycerin products include Diglycerin 801 (manufactured by Sakamoto Pharmaceutical Industries, Ltd.), Diglycerin S (manufactured by Sakamoto Pharmaceutical Industries, Ltd.), and Unigly (registered trademark) G-2 (manufactured by NOF Corporation).

[0032] The content of diglycerin in the cosmetic composition of the present disclosure is 5% by mass to 30% by mass relative to the total mass of the cosmetic composition, from the viewpoint of achieving both a moist feeling and non-stickiness. When the diglycerin content is 5% by mass or more relative to the total mass of the cosmetic composition, the cosmetic composition tends to provide a moisturizing feeling when applied to the skin, whereas when the diglycerin content is 30% by mass or less relative to the total mass of the cosmetic composition, the cosmetic composition tends to provide a non-sticky feeling when applied to the skin. The content of diglycerin is preferably 10% by mass to 25% by mass, more preferably 10% by mass to 20% by mass, and even more preferably 12% by mass to 18% by mass, relative to the total mass of the cosmetic composition.

[0033] [Compound (C)] The cosmetic composition of the present disclosure contains at least one compound (C) selected from the group consisting of a polyhydric alcohol compound (C1) having 4 to 6 carbon atoms other than diglycerin, and a compound (C2) having at least one of a polyethylene oxide structure and a polypropylene oxide structure.

[0034] The cosmetic composition of the present disclosure may contain one type of compound (C) alone or two or more types. When the cosmetic composition of the present disclosure contains two or more types of compound (C), the two or more types of compound (C) may be two or more types of polyhydric alcohol compound (C1), two or more types of compound (C2), or a combination of one or more types of polyhydric alcohol compound (C1) and one or more types of compound (C2).

[0035] The polyhydric alcohol compound (C1) is not particularly limited as long as it is a polyhydric alcohol compound having 4 to 6 carbon atoms other than diglycerin and is a polyhydric alcohol compound that is commonly used in pharmaceuticals, quasi-drugs, and cosmetics. Specific examples of the polyhydric alcohol compound (C1) include 1,3-butylene glycol, 3-methyl-1,3-butanediol, dipropylene glycol, pentylene glycol, 1,2-hexanediol, sorbitol, erythritol, mannitol, xylitol, and hexylene glycol.

[0036] From the viewpoint of suppressing stickiness while maintaining a moist feeling, the polyhydric alcohol compound (C1) preferably contains at least one selected from the group consisting of 1,3-butylene glycol, 3-methyl-1,3-butanediol, dipropylene glycol, pentylene glycol, 1,2-hexanediol, and hexylene glycol, more preferably contains at least one selected from the group consisting of 1,3-butylene glycol, 3-methyl-1,3-butanediol, and dipropylene glycol, even more preferably contains at least one selected from the group consisting of 1,3-butylene glycol and dipropylene glycol, and particularly preferably contains 1,3-butylene glycol.

[0037] The compound (C2) is not particularly limited as long as it is a compound having at least one of a polyethylene oxide structure and a polypropylene oxide structure. The compound (C2) is preferably at least one selected from the group consisting of polyethylene glycol, polypropylene glycol, and compounds in which a glycerin skeleton, a diglycerin skeleton, or a glucose skeleton is modified with at least one of a polyethylene oxide chain and a polypropylene oxide chain.

[0038] From the viewpoint of suppressing stickiness while maintaining a moist feeling, the compound (C2) preferably contains at least one selected from the group consisting of methyl gluceth-10, methyl gluceth-20, PPG-10 methyl glucose, PPG-20 methyl glucose, PEG-6, PEG-20, PEG-32, PPG-9 diglyceryl, glycereth-26, PPG-24 glycereth-24, and PEG / PPG / polybutylene glycol-8 / 5 / 3 glycerin, and more preferably contains at least one selected from the group consisting of methyl gluceth-10, methyl gluceth-20, PEG-6, PEG-32, PPG It is more preferable that the composition contains at least one selected from the group consisting of methyl gluceth-10, methyl gluceth-20, PPG-9 diglyceryl, and PEG / PPG / polybutylene glycol-8 / 5 / 3 glycerin, and it is even more preferable that the composition contains at least one selected from the group consisting of methyl gluceth-10, methyl gluceth-20, PPG-9 diglyceryl, and PEG / PPG / polybutylene glycol-8 / 5 / 3 glycerin, and it is particularly preferable that the composition contains at least one selected from the group consisting of PPG-9 diglyceryl and PEG / PPG / polybutylene glycol-8 / 5 / 3 glycerin.

[0039] The total content of compound (C) in the cosmetic composition of the present disclosure [i.e., the total content of polyhydric alcohol compound (C1) and compound (C2)] is not particularly limited, but from the viewpoint of achieving both a moist feeling and non-stickiness, it is preferably 0.2% by mass to 25% by mass, more preferably 1% by mass to 24% by mass, and even more preferably 10% by mass to 20% by mass, relative to the total mass of the cosmetic composition.

[0040] When the cosmetic composition of the present disclosure contains a polyhydric alcohol compound (C1) as compound (C), the content of the polyhydric alcohol compound (C1) is not particularly limited, but from the viewpoint of achieving a better balance between a moist feeling and non-stickiness, the content is preferably 0.2% by mass to 25% by mass, more preferably 7% by mass to 24% by mass, and even more preferably 10% by mass to 20% by mass, relative to the total mass of the cosmetic composition.

[0041] When the cosmetic composition of the present disclosure contains compound (C2) as compound (C), the content of compound (C2) is not particularly limited, but from the viewpoint of achieving a better balance between moisturizing feeling and non-stickiness, it is preferably 1% by mass to 5% by mass, and more preferably 1% by mass to 3% by mass, relative to the total mass of the cosmetic composition.

[0042] <<Total content of diglycerin and compound (C)>> The total content of diglycerin and compound (C) in the cosmetic composition of the present disclosure is not particularly limited, but from the viewpoint of further enhancing the moisturizing feeling, for example, it is preferably 10% by mass to 40% by mass, more preferably 15% by mass to 40% by mass, even more preferably 20% by mass to 40% by mass, and particularly preferably 25% by mass to 35% by mass, relative to the total mass of the cosmetic composition. In one embodiment, the total content of diglycerin and compound (C) may be 15% by mass to 35% by mass, 15% by mass to 30% by mass, or 20% by mass to 30% by mass, relative to the total mass of the cosmetic composition.

[0043] <<Ratio of compound (C) to diglycerin>> In the cosmetic composition of the present disclosure, the content ratio of compound (C) to diglycerin is not particularly limited, but from the viewpoint of achieving a better balance between moisturizing feeling and non-stickiness, it is preferably 0.02 to 5 by mass, more preferably 0.05 to 4, and even more preferably 0.5 to 2.

[0044] 〔water〕 The cosmetic composition of the present disclosure comprises water. The water is not particularly limited as long as it is water that can be used in cosmetics. Specific examples of water include natural water, purified water, distilled water, ion-exchanged water, pure water, and ultrapure water (for example, Milli-Q water). As the water, for example, purified water, distilled water, ion-exchanged water, pure water, or ultrapure water is preferred from the viewpoint of having few impurities.

[0045] The content of water in the cosmetic composition of the present disclosure is not particularly limited, but is preferably, for example, 40% by mass to 90% by mass relative to the total mass of the cosmetic composition.

[0046] [Anti-inflammatory ingredients] The cosmetic composition of the present disclosure may further comprise an anti-inflammatory component. When the cosmetic composition of the present disclosure contains an anti-inflammatory component, it may contain one type of anti-inflammatory component alone, or two or more types.

[0047] Cosmetic compositions containing anti-inflammatory ingredients can cause a sticky feeling when applied to the skin by the user, and it has been technically difficult for conventional cosmetic compositions to contain an anti-inflammatory ingredient and yet suppress that sticky feeling. In contrast, the cosmetic composition of the present disclosure, even when further containing an anti-inflammatory ingredient, provides a moisturizing feeling and a non-sticky feeling when applied to the skin.

[0048] The anti-inflammatory component is not particularly limited as long as it is an anti-inflammatory component that is commonly used in pharmaceuticals, quasi-drugs, and cosmetics. Specific examples of anti-inflammatory ingredients include allantoin, dipotassium glycyrrhizinate, tranexamic acid, stearyl glycyrrhetinate, and nicotinamide. The anti-inflammatory component preferably contains at least one selected from the group consisting of allantoin, dipotassium glycyrrhizinate, nicotinamide, and tranexamic acid.

[0049] As the anti-inflammatory component, commercially available products can be used. Examples of commercially available allantoin products include RonaCare Allantoin (manufactured by Merck), allantoin (manufactured by Permakem Asia Co., Ltd.), and allantoin (manufactured by Kawaken Fine Chemicals Co., Ltd.). "RonaCare" is a registered trademark. An example of a commercially available product of dipotassium glycyrrhizinate is dipotassium glycyrrhizinate manufactured by Maruzen Pharmaceutical Co., Ltd. Examples of commercially available tranexamic acid products include tranexamic acid (manufactured by Maruzen Pharmaceuticals Co., Ltd.) and tranexamic acid (manufactured by Nippon Fine Chemical Co., Ltd.).

[0050] When the cosmetic composition of the present disclosure contains anti-inflammatory components, the total content of the anti-inflammatory components is not particularly limited, but is preferably 0.05% by mass to 5.0% by mass.

[0051] When the cosmetic composition of the present disclosure contains allantoin as an anti-inflammatory ingredient, the content of allantoin is not particularly limited, but is preferably 0.05% by mass to 0.2% by mass relative to the total mass of the cosmetic composition.

[0052] When the cosmetic composition of the present disclosure contains dipotassium glycyrrhizinate as an anti-inflammatory ingredient, the content of dipotassium glycyrrhizinate is not particularly limited, but is preferably 0.05% by mass to 0.5% by mass relative to the total mass of the cosmetic composition.

[0053] When the cosmetic composition of the present disclosure contains tranexamic acid as an anti-inflammatory ingredient, the content of tranexamic acid is not particularly limited, but is preferably 0.05% by mass to 2% by mass relative to the total mass of the cosmetic composition.

[0054] [Other ingredients] The cosmetic composition of the present disclosure may contain components other than the components already described (so-called other components) as needed, as long as the effects of the present disclosure are not impaired. Examples of other ingredients include additive ingredients (hereinafter simply referred to as "additive ingredients") that are commonly used in cosmetics, quasi-drugs, and pharmaceuticals.

[0055] Examples of additive components include functional components that exhibit useful beauty effects (moisturizing effect, whitening effect, skin conditioning effect, etc.) when used in cosmetic compositions. Other additive components include surfactants, preservatives (phenoxyethanol, ethylhexylglycerin, methylparaben, propylparaben, etc.), carotenoids such as astaxanthin, ceramides, vitamin E compounds such as tocopherol, polyhydric alcohols other than diglycerin and polyhydric alcohol compound (C1) (also referred to as "other polyhydric alcohols"), colorants, thickeners other than agar, pH adjusters (potassium hydroxide, sodium hydroxide, hydrochloric acid, etc.), buffers, fragrances, antibacterial agents, ultraviolet absorbers, active oxygen scavengers, antimicrobial agents, minerals, etc. These additional components may be such that one component performs two or more functions.

[0056] When the cosmetic composition of the present disclosure contains other components, it may contain one type of other component alone, or two or more types.

[0057] When the cosmetic composition of the present disclosure contains other components, the content of the other components is not particularly limited and can be set appropriately depending on the purpose.

[0058] [Physical properties of cosmetic composition] The viscosity of the cosmetic composition of the present disclosure is not particularly limited. From the viewpoints of an appearance that evokes a moisturizing feeling when the cosmetic composition is visually recognized, and operability when using the cosmetic composition, the viscosity of the cosmetic composition of the present disclosure at 25°C is preferably 75 mPa·s to 4500 mPa·s, more preferably 110 mPa·s to 3000 mPa·s, even more preferably 130 mPa·s to 2000 mPa·s, and particularly preferably 150 Pa·s to 1500 Pa·s.

[0059] In the present disclosure, the viscosity of the cosmetic composition is a value measured using a Brookfield viscometer under the following measurement conditions. As the B-type viscometer, for example, a B-type viscometer (model number: TVB-10) manufactured by Toki Sangyo Co., Ltd. can be used. However, the B-type viscometer is not limited to this.

[0060] <Measurement conditions> Measurement temperature: 25℃ Rotor: M3 rotor Rotation speed: 60 rpm (revolution per minute) Spin time: 60 seconds

[0061] [Uses of cosmetic compositions] The cosmetic composition of the present disclosure can be applied as a cosmetic or a quasi-drug (so-called medicated cosmetic). The cosmetic composition of the present disclosure can be used, for example, for skin care, body care, and scalp care. The cosmetic composition of the present disclosure is particularly suitable as a lotion. That is, the cosmetic composition of the present disclosure is preferably a lotion.

[0062] [Method for producing cosmetic composition] The method for producing the cosmetic composition of the present disclosure is not particularly limited. The cosmetic composition of the present disclosure can be obtained using agar, diglycerin, compound (C), water, and other components used as needed, according to a known method for producing a cosmetic composition.

[0063] One embodiment of a suitable method for producing the cosmetic preparation of the present disclosure is a method in which agar, diglycerin, compound (C), water, and other components used as needed are mixed by stirring at, for example, 80°C (hereinafter also referred to as the "mixing step") to obtain a mixture, and then an anti-inflammatory component or other component used as needed is added to the mixture.

[0064] An example of a suitable method for producing the cosmetic composition of the present disclosure will be described below, however, explanations of matters common to the cosmetic compositions already described, such as matters relating to the components of the cosmetic composition and their amounts, will be omitted.

[0065] [Mixing process] In the mixing step, agar, diglycerin, compound (C), and water are added to a predetermined container, heated to 80° C., and then stirred and mixed. The method for mixing these components is not particularly limited. As described above, in this step, other components to be used as needed may be blended and mixed by stirring.

[0066] In the mixing step, for example, agar, diglycerin, compound (C), and water may be mixed all at once; agar and water, and diglycerin, compound (C), and water may be separately stirred to prepare mixed solutions, and then the two resulting mixed solutions may be mixed; or agar and water, diglycerin and water, and compound (C) and water may be separately stirred to prepare mixed solutions, and then the three resulting mixed solutions may be mixed.

[0067] The mixing step is not limited to the above-mentioned method. In the mixing step, the anti-inflammatory component may be added to a predetermined container together with agar, diglycerin, compound (C), and water, and then stirred and mixed.

[0068] The mixing means is not particularly limited, and any commercially available mixing means may be used. Examples of the mixing means include a stirrer, a paddle mixer, an impeller mixer, a homomixer, a disper mixer, an ultra mixer, a high-pressure homogenizer, an ultrasonic homogenizer, etc. Among these, the mixing means is preferably at least one selected from the group consisting of a homomixer and a disper mixer.

[0069] In the mixing step, the temperature when agar, diglycerin, compound (C), and water are mixed is preferably set to 70° C. to 90° C. The temperature when other components are mixed is not particularly limited and can be set appropriately depending on the types of components to be mixed, etc.

[0070] The stirring conditions for mixing the components are not particularly limited as long as the components can be mixed sufficiently, and can be set appropriately depending on the mixing means. For example, when a homomixer is used as the mixing means, the components can usually be stirred at 500 rpm to 8000 rpm for 5 minutes to 60 minutes.

[0071] [Other steps] The method for producing the cosmetic composition of the present disclosure may include steps other than the mixing step (so-called other steps) as necessary. Other steps include, for example, a degassing step, a heat sterilization step, a cooling step, and a removal step. Methods known in the art may be applied to the degassing step, the heat sterilization step, the cooling step, and the removal step.

[0072] More preferred embodiments of the cosmetic composition of the present disclosure include the following. Agar, diglycerin, compound (C), water, and other optional ingredients are mixed and stirred at 70°C to 90°C to obtain a mixture, which is then cooled and allowed to stand. The cooled and allowed to stand mixture is then subjected to a stirring and pulverization treatment using a homomixer to obtain a suspended cosmetic composition. The cosmetic composition obtained in this manner tends to have a reduced sticky feeling when applied to the skin. [Example]

[0073] The cosmetic composition of the present disclosure will be described in more detail below using examples. However, the cosmetic composition of the present disclosure is not limited to the following examples as long as it does not deviate from the gist of the present disclosure.

[0074] [Production of cosmetic composition] [Examples 1 to 4 and Comparative Examples 1 to 3] Agar listed in the composition column of Table 1 below was mixed with 50 times the amount of water relative to the agar, heated to 80°C in a water bath, and then stirred at 5,000 rpm for 15 minutes using a homomixer (model name: Homomixer MARK II 2.5, manufactured by Primix Corporation) to obtain a mixture of agar and water. The remaining water and the other components listed in the composition column of Table 1, except for agar, were then added and mixed. The resulting mixture was stirred at 3,000 rpm for 10 minutes and cooled to 30°C. Water was added to the cooled mixture so that the total amount was 100% by mass. The mixture containing the added water was allowed to stand until solidified into a gel, and then stirred at 3,000 rpm for 3 minutes using the homomixer. The stirred mixture was then vacuum degassed to obtain the cosmetic compositions of Examples 1 to 4 and Comparative Examples 1 to 3.

[0075] [Examples 5 to 11 and Comparative Examples 4 and 5] The cosmetic compositions of Examples 5 to 11 and Comparative Examples 4 and 5 were obtained by the same procedure as in Example 1, except that the composition of the cosmetic composition in Example 1 was changed to the composition shown in Table 2 below.

[0076] [Examples 12 to 15 and Comparative Examples 6 and 7] The cosmetic compositions of Examples 12 to 15 and Comparative Examples 6 and 7 were obtained by the same procedure as in Example 1, except that the composition of the cosmetic composition in Example 1 was changed to the composition shown in Table 3 below.

[0077] [Examples 16 to 22 and Comparative Examples 8 to 10] The cosmetic compositions of Examples 16 to 22 and Comparative Examples 8 to 10 were obtained by the same procedure as in Example 1, except that the composition of the cosmetic composition in Example 1 was changed to the composition shown in Table 4 below.

[0078] Examples 23 to 26 The agar listed in the composition column of Table 5 below was mixed with 50 times the amount of water relative to the agar, heated to 80°C in a water bath, and then stirred at 5000 rpm for 15 minutes using a homomixer (model name: Homomixer MARK II 2.5, manufactured by Primix Corporation) to obtain a mixture of agar and water. Separately, the anti-inflammatory component (represented as "(E)" in the composition column of Table 5 below) was mixed with 50 times the amount of water relative to the anti-inflammatory component, and the mixture was stirred at 70°C for 5 minutes to obtain an aqueous solution of the anti-inflammatory component. Next, the components other than the agar and anti-inflammatory component listed in the composition column of Table 5, and the remaining water, were added to the mixture of agar and water obtained above and mixed. The resulting mixture was then stirred at 3000 rpm for 10 minutes and cooled to 30°C. The aqueous solution of the anti-inflammatory component obtained above was then added to the cooled mixture, and water was then added so that the total amount was 100% by mass. The mixture was then stirred at 3000 rpm for 3 minutes using the homomixer. The stirred mixture was then vacuum degassed to obtain the cosmetic compositions of Examples 23 to 26.

[0079] Examples 27 to 32 The cosmetic compositions of Examples 27 to 32 were obtained in the same manner as in Example 1, except that the composition of the cosmetic composition in Example 1 was changed to the composition shown in Table 6 below.

[0080] In Tables 1 to 6, for convenience, each component is represented and classified as follows: Agar: (A) Diglycerin: (B) Compound (C):(C) Polyhydric alcohol compound (C1): (C1) Compound (C2):(C2) Water:(D) Anti-inflammatory ingredient: (E)

[0081] The unit of the amount of each component listed in the composition column in Tables 1 to 6 is "% by mass," and the amount of water is such that the total amount of each cosmetic composition is 100% by mass.

[0082] In Tables 1, 2, 4, 5 and 6, "-" in the column for each component means that the component in that column is not contained.

[0083] In Tables 3, 4, and 6, the mass ratio of (C) to (B) is expressed as "mass ratio (C) / (B)," and the total mass ratio of (B) and (C) is expressed as "total mass ratio (B)+(C)."

[0084] The value of the "content mass ratio (C) / (B)" was rounded to two decimal places. In Table 4, "-" in the "content mass ratio (C) / (B)" column means that the value corresponding to that column cannot be calculated.

[0085] Example 2 shown in Tables 2 to 6 is listed for comparison with the other examples shown in Tables 2 to 6, and is the same example as Example 2 shown in Table 1. Examples 20 and 21 listed in Table 6 are listed for comparison with the other examples listed in Table 6, and are the same examples as Examples 20 and 21 listed in Table 4, respectively.

[0086] [evaluation] 1. Physical properties 1-1.Viscosity The viscosity was measured for each of the cosmetic compositions of Examples 2 and 5 to 11 and Comparative Examples 4 and 5. Specifically, the measurement was carried out as follows. Approximately 60 g of the cosmetic composition was weighed into a 50 mL glass vial, and the viscosity (unit: mPa s) was measured under the following measurement conditions using a B-type viscometer (model number: TVB-10) manufactured by Toki Sangyo Co., Ltd. The measured values ​​are shown in Table 2.

[0087] <Measurement conditions> Measurement temperature: 25℃ Rotor: M3 rotor Rotation speed: 60 rpm Spin time: 60 seconds

[0088] 1-2. Thickness Since the thickness of a cosmetic composition is correlated with the viscosity of the cosmetic composition, the thickness of each of the cosmetic compositions of Examples 2 and 5 to 11 and Comparative Examples 4 and 5 was ranked based on the measured value of "1-1. Viscosity" above. If the rank was "2," "3," or "4," the cosmetic composition was judged to have a thick consistency, and if the rank was "1," the cosmetic composition was judged to have no thick consistency. The results are shown in Table 2. A rank of "4" is most preferable from the viewpoint of ease of use when using the cosmetic composition and the impression of moisturizing feeling when the cosmetic composition is visually recognized.

[0089] <Rank> 1: Viscosity is less than 75 mPa·s or more than 4500 mPa·s. 2: The viscosity is in the range of 75 mPa·s or more and less than 110 mPa·s, or in the range of more than 3000 mPa·s and 4500 mPa·s or less. 3: Viscosity is in the range of 110 mPa·s or more but less than 130 mPa·s, or in the range of more than 2000 mPa·s but less than 3000 mPa·s. 4: Viscosity is in the range of 130 mPa·s or more and 2000 mPa·s or less.

[0090] 2. Feeling of use 2-1. Moisture Immediately after preparation, three expert evaluators used each of the cosmetic compositions of Examples 1 to 4 and 12 to 32 and Comparative Examples 1 to 3 and 6 to 10 in the following manner, and evaluated the moisturizing feel. The rank selected by each expert evaluator with the most number of votes was taken as the moisturizing feel evaluation result, and in cases where the number of votes was the same, the better rank was taken as the moisturizing feel evaluation result. Specifically, the skilled evaluator took 100 μL of the cosmetic composition on his finger, spread it on the inside of the forearm of the opposite arm, and evaluated the moisturizing feeling at that time using the following rankings. The results are shown in Tables 1 and 3 to 6. "4" indicates the most excellent moisturizing feeling. From the viewpoint of product quality, "2", "3" and "4" were judged as acceptable ranks, and "1" was judged as unacceptable rank.

[0091] <Rank> 1: I don't feel any moisture. 2: Feels slightly moisturizing. 3: Feels moisturized. 4: I feel a strong sense of moisture.

[0092] 2-2. Non-stickiness Immediately after preparation, three expert evaluators used each of the cosmetic compositions of Examples 1 to 4 and 12 to 32 and Comparative Examples 1 to 3 and 6 to 10 in the following manner, and evaluated the stickiness. The rank selected by each expert evaluator with the most number of votes was taken as the evaluation result for stickiness, and in cases where the number of votes was the same, the better rank was taken as the evaluation result for stickiness. Specifically, the skilled evaluator took 100 μL of the cosmetic on his finger, spread it on the inside of the forearm of the opposite arm, and evaluated the lack of stickiness using the following rankings. The results are shown in Tables 1 and 3 to 6. "4" indicates the least sticky feeling. From the viewpoint of product quality, "2", "3" and "4" were judged as acceptable ranks, and "1" was judged as unacceptable rank.

[0093] <Rank> 1: It feels very sticky. 2: Feels sticky. 3: Slight stickiness is felt. 4: Does not feel sticky.

[0094] [Table 1]

[0095] [Table 2]

[0096] [Table 3]

[0097] [Table 4]

[0098] [Table 5]

[0099] [Table 6]

[0100] The agar jelly strengths shown in Tables 1 to 6 were measured by the method described above. Specifically, the measurements were performed as follows. First, an aqueous agar solution with a concentration of 1.5% by mass was prepared. The prepared aqueous agar solution was then left to solidify for 15 hours in an environment with an ambient temperature of 20°C. The gel obtained by this solidification was used as a measurement sample, and a 1 cm thick gel surface was measured using a Nissui-type jelly strength measuring device. 2 The maximum load (unit: g) that the agar can withstand for 20 seconds is measured, and the obtained value is used as the agar jelly strength (unit: g / cm 2 〕

[0101] Details of each component listed in Tables 1 to 6 are as follows. [(B): Diglycerin] Diglycerin (product name: Diglycerin S, manufactured by Sakamoto Pharmaceutical Co., Ltd.)

[0102] [(C):Compound (C)] <(C1): Polyhydric alcohol compound (C1)> 1,3-Butylene glycol (product name: 1,3-butylene glycol, carbon number: 4, manufactured by Daicel Corporation) Dipropylene glycol (product name: DPG, carbon number: 6, manufactured by Koyo Fine Chemical Co., Ltd.) <(C2):Compound (C2)> PEG-32 (product name: PEG#1540, manufactured by NOF Corporation) PEG-6 (product name: PEG#300, manufactured by NOF Corporation) PEG / PPG / Polybutylene Glycol-8 / 5 / 3 Glycerin (trade name: Wilbride (registered trademark) S-753, manufactured by NOF Corporation) Methylgluceth-10 (trade name: Macbiobride (registered trademark) MG-10E, manufactured by NOF Corporation) PPG-9 Diglyceryl (trade name: Unilube (registered trademark) DGP-700, manufactured by NOF Corporation)

[0103] <(D):Water> ·Water [purified water]

[0104] <(E): Anti-inflammatory ingredient> Allantoin (product name: RonaCare® Allantoin, manufactured by Merck) Tranexamic acid (trade name: Tranexamic acid, manufactured by Maruzen Pharmaceuticals Co., Ltd.) Dipotassium glycyrrhizinate (product name: Tonoharaki Dipotassium Glycyrrhizinate, manufactured by Maruzen Pharmaceutical Co., Ltd.) Nicotinamide

[0105] <Other polyhydric alcohols> Bisethoxydiglycol cyclohexanedicarboxylate (trade name: Neosolue-Aqulio, manufactured by Nippon Fine Chemical Co., Ltd.) Propylene glycol (product name: Cosmetic propylene glycol, manufactured by ADEKA Corporation) Glycerin (product name: concentrated glycerin for cosmetics, manufactured by Kao Corporation) Polyglycerin-10 (trade name: Polyglycerin #750, manufactured by Sakamoto Pharmaceutical Co., Ltd.)

[0106] <Other ingredients> Preservative (product name: Mekxance-M, manufactured by Ueno Pharmaceutical Co., Ltd.) [Product name: Phenoxyethanol, manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.] pH adjuster (product name: 1 mol / L sodium hydroxide solution, manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.)

[0107] The results shown in Tables 1 to 6 reveal that the cosmetic compositions of the Examples have a thicker consistency than the cosmetic compositions of the Comparative Examples, and provide a moisturizing and non-sticky feeling when applied to the skin.

Claims

1. Agar and Diglycerin and at least one compound (C) selected from the group consisting of a polyhydric alcohol compound (C1) having 4 to 6 carbon atoms other than diglycerin, and a compound (C2) having at least one of a polyethylene oxide structure and a polypropylene oxide structure; Water and Including, The agar jelly strength is 30 g / cm ２ ~250g / cm ２ and the content of agar is 0.2% by mass to 1.2% by mass relative to the total mass of the cosmetic composition; A cosmetic composition having a diglycerin content of 5% by mass to 30% by mass relative to the total mass of the cosmetic composition.

2. 2. The cosmetic composition according to claim 1, wherein the compound (C2) is at least one selected from the group consisting of polyethylene glycol, polypropylene glycol, and compounds in which a glycerin skeleton, a diglycerin skeleton, or a glucose skeleton is modified with at least one of a polyethylene oxide chain and a polypropylene oxide chain.

3. The cosmetic composition according to claim 1, wherein compound (C2) comprises at least one selected from the group consisting of methyl gluceth-10, methyl gluceth-20, PPG-10 methyl glucose, PPG-20 methyl glucose, PEG-6, PEG-20, PEG-32, PPG-9 diglyceryl, glycereth-26, PPG-24 glycereth-24, and PEG / PPG / polybutylene glycol-8 / 5 / 3 glycerin.

4. 3. The cosmetic composition according to claim 1, wherein the polyhydric alcohol compound (C1) comprises at least one selected from the group consisting of 1,3-butylene glycol, 3-methyl-1,3-butanediol, dipropylene glycol, pentylene glycol, 1,2-hexanediol, and hexylene glycol.

5. 3. The cosmetic composition according to claim 1, wherein the content ratio of compound (C) to diglycerin is 0.05 to 4 on a mass basis.

6. 3. The cosmetic composition according to claim 1, wherein the viscosity at 25°C is 75 mPa·s to 4500 mPa·s.

7. 3. The cosmetic composition according to claim 1, further comprising an anti-inflammatory component, the anti-inflammatory component comprising at least one selected from the group consisting of allantoin, dipotassium glycyrrhizinate, nicotinamide, and tranexamic acid.

Images