Water-based cosmetics

Abstract

To provide water-based cosmetics that do not make the skin slimy during its application, do not cause stickiness while the cosmetics are being dried, and make the skin soft and smooth after the cosmetics are dried.SOLUTION: Water-based cosmetics contain following components (A), (B), (C) and (D): (A) bis-ethoxydiglycol cyclohexane 1,4-dicarboxylate, (B) polysaccharide 0.02-0.5 mass%, (C) polyether-modified silicone, and (D) water.SELECTED DRAWING: None

Description

[Technical Field]

[0001] This invention relates to an aqueous cosmetic. [Background technology]

[0002] Traditionally, various cosmetics have been considered that offer a refreshing feel and contain active ingredients aimed at moisturizing, improving fine lines, and whitening the skin. For example, Patent Document 1 describes a cosmetic composition containing cyclohexane-1,4-dicarboxylic acid bisethoxydiglycol, tripylene glycol, and an oil with a specific gravity of 0.80 to 0.95, which provides a refreshing feel when applied to the skin, excellent penetration into the skin, long-lasting moisturizing effect, and minimal stickiness after application. [Prior art documents] [Patent Documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2018-39789 [Overview of the Initiative] [Problems that the invention aims to solve]

[0004] While conventional cosmetics offer good moisture and a non-greasy feel, they often fall short in terms of the smoothness and softness of the skin after application. Furthermore, there were issues with the stickiness during application. [Means for solving the problem]

[0005] The inventors have discovered that by using cyclohexane-1,4-dicarboxylic acid bisethoxydiglycol in combination with polysaccharides and polyether-modified silicone, it is possible to obtain an aqueous cosmetic that does not feel sticky on the skin during application, does not feel sticky when the cosmetic dries, and provides smoothness and softness to the skin after application.

[0006] The present invention comprises the following components (A), (B), (C), and (D): (A) Cyclohexane-1,4-dicarboxylic acid bisethoxydiglycol, (B) Polysaccharide 0.02-0.5% by mass, (C) Polyether-modified silicone, (D)Water This relates to an aqueous cosmetic product containing [a specific ingredient]. [Effects of the Invention]

[0007] The aqueous cosmetic composition of the present invention does not feel sticky on the skin during application, does not feel greasy when the aqueous cosmetic composition dries, and can provide smoothness and softness to the skin after the aqueous cosmetic composition has dried. [Modes for carrying out the invention]

[0008] The component (A) used in the present invention, cyclohexane-1,4-dicarboxylic acid bisethoxydiglycol, is a diester of a dicarboxylic acid and a polyoxyethylene monoalkyl ether. In the present invention, the dicarboxylic acid is 1,4-cyclohexanedicarboxylic acid, and the polyoxyethylene monoalkyl ether is diethylene glycol monoethyl ether. Ingredient (A) can give the skin a smooth and soft feel after application and drying. Commercially available products such as Neosolue-Aqulio (manufactured by Nippon Seika Co., Ltd.) can be used.

[0009] The content of component (A) is preferably 0.05 to 2% by mass in the total composition, more preferably 0.08 to 1.5% by mass, even more preferably 0.2 to 0.8% by mass, and still more preferably 0.3 to 0.6% by mass, from the viewpoint of reducing stickiness on the skin during application, reducing stickiness as the aqueous cosmetic dries, improving the smoothness of the skin after application and drying, and improving the softness of the skin after application and drying.

[0010] The polysaccharide as the component (B) is not limited as long as it is used in ordinary cosmetics, and it may be derived from natural products or obtained by chemical synthesis.

[0011] In addition, derivatives of polysaccharides obtained by bonding a polysaccharide with a polyalkylene oxide group such as an alkyl group, a hydroxyalkyl group, a polyethylene oxide group or a polypropylene oxide group, a saccharide such as glucose, lactose, sucrose, or a polymer having these saccharides as constituent units to a part of the sugar of the polysaccharide are also regarded as polysaccharides and included in the polysaccharide of the component (B).

[0012] Specifically, for example, locust bean gum, guar gum, tamarind gum, quince seed-derived gum, gum arabic, tragacanth gum, karaya gum, carrageenan, alginic acid, pectin, hydroxypropyl guar gum, methyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, carboxymethyl cellulose, tuberose polysaccharide, xanthan gum , Muco-polysaccharides such as welan gum, dextran, pullulan, hyaluronic acid, chondroitin sulfate, dermatan sulfate, chitin, chitosan, etc. can be mentioned. Among these, from the viewpoints of reducing the stickiness of the skin during application, reducing the stickiness when the aqueous cosmetic dries, improving the smoothness of the skin after application and drying, and improving the softness of the skin after application and drying, it is preferable to contain at least one or more selected from quince seed extract, hydroxypropyl guar gum, xanthan gum, tuberose polysaccharide, and more preferably to contain at least xanthan gum.

[0013] The component (B) can be used in combination of one or more kinds, and the content is 0.02 to 0.5% by mass in the whole composition, preferably 0.03 to 0.4% by mass, more preferably 0.04 to 0.3% by mass, and still more preferably 0.05 to 0.1% by mass, from the viewpoints of the non-stickiness during application, the smoothness and softness of the skin after application.

[0014] In the present invention, the mass ratio (A) / (B) of component (A) to component (B) is preferably 1 to 50, more preferably 1.8 to 20, and even more preferably 4.3 to 9.4 from the viewpoints of reducing the stickiness of the skin during application, reducing the tackiness when the aqueous cosmetic dries, improving the smoothness of the skin after application and drying, and improving the softness of the skin after application and drying.

[0015] Examples of the polyether-modified silicone of component (C) used in the present invention include those represented by the following general formula (1).

[0016] [Chemical formula]

[0017] [In the formula, R g , , 9 , ,

[0018] , h , f , 8 ~R 4 and R 6 ~R 7 each represents a methyl group or a phenyl group, and R 1 , R 5 and R 8 each represents a methyl group, a phenyl group, or a group R 9 (OC3H6) f (OC2H4) g O(CH2) h -(R 9 represents a hydrogen atom or an alkyl group having 1 to 12 carbon atoms, f and g are average values and each represents a number from 0 to 35, and h represents a number from 1 to 5). However, at least one of R 1 , R 5 and R 8 is a group R 9 (OC3H6) f (OC2H4) g O(CH2) h -. d and e are average values, d represents a number from 1 to 200, and e represents a number from 0 to 50)

[0018] As the polyether-modified silicone, at least one or more selected from polyoxyethylene-methylpolysiloxane copolymer represented by general formula (1) and poly(oxyethylene-oxypropylene)-methylpolysiloxane copolymer are preferred. From the viewpoint of reducing stickiness on the skin during application, reducing stickiness as the aqueous cosmetic dries, improving the smoothness of the skin after application and drying, and improving the softness of the skin after application and drying, polyoxyethylene-methylpolysiloxane copolymer is more preferred.

[0019] Component (C) is preferably HLB 10-20, more preferably HLB 11-18, and even more preferably 12-16, from the viewpoint of reducing stickiness on the skin during application, reducing tackiness as the aqueous cosmetic dries, improving the smoothness of the skin after application and drying, and improving the softness of the skin after application and drying. HLB is an index representing the balance between hydrophilicity and lipophilicity, and in this invention, it refers to the HLB determined by the following Griffin formula. HLB = 20 × Sum of molecular weights of hydrophilic bases / Molecular weight Furthermore, if two or more polyether-modified silicones with different HLB values ​​are used, the weighted average of these HLB values ​​should fall within the above range.

[0020] As the polyether-modified silicone for component (C), commercially available products such as "KF-6015 (HLB: 4.5)" (PEG-3 dimethicone), "KF-6011 (HLB: 14.5)" (PEG-11 methyl ether dimethicone), "KF-6011P (HLB: 14.5)" (PEG-11 methyl ether dimethicone), "KF-6043 (HLB: 14.5)" (PEG-10 dimethicone) (all manufactured by Shin-Etsu Chemical Co., Ltd.); "SH-3775M (HLB: 5)" (PEG-12 dimethicone), "SH-3771M (HLB: 13)" (PEG-12 dimethicone), and "SS-2804 (HLB: 13)" (PEG-12 dimethicone) (all manufactured by Toray Dow Corning Silicone Co., Ltd.) can be used.

[0021] Component (C) can be used alone or in combination of two or more types. From the viewpoint of reducing stickiness on the skin during application, reducing stickiness as the aqueous cosmetic dries, improving the smoothness of the skin after application and drying, and improving the softness of the skin after application and drying, the content is preferably 0.02 to 3% by mass of the total composition, more preferably 0.04 to 1% by mass, and even more preferably 0.08 to 0.3% by mass.

[0022] In the present invention, the mass ratio (B) / (C) of component (B) to component (C) is preferably 0.1 to 5, more preferably 0.23 to 1.8, and even more preferably 0.5 to 1.2, from the viewpoint of reducing stickiness on the skin during application, reducing stickiness as the aqueous cosmetic dries, improving the smoothness of the skin after application and drying, and improving the softness of the skin after application and drying.

[0023] In the present invention, the water content of component (D) is preferably 40 to 93% by mass, more preferably 50 to 90% by mass, and even more preferably 60 to 87% by mass, from the viewpoint of reducing stickiness on the skin during application.

[0024] The aqueous cosmetic composition of the present invention preferably further contains (E) polyethylene glycol with a number average molecular weight of 200 to 20,000, which can reduce stickiness on the skin during application and further improve the smoothness and softness of the skin after application and drying. As for the polyethylene glycol of component (E) with a number average molecular weight of 200 to 20000, from the viewpoint of reducing stickiness on the skin during application and further improving the smoothness and softness of the skin after application, a number average molecular weight of 300 to 10000 is preferred, and more preferably 400 to 2000.

[0025] The number-average molecular weight of polyethylene glycol is measured by the following method. (Measurement of number-average molecular weight) The number-average molecular weight of polyethylene glycol is measured as follows: (Measurement device and conditions) Integrated GPC system manufactured by Tosoh Corporation Equipment: HLC-8220GPC Detector: RI (Differential Refractometer) Column: TSK-gel G5000HxL (7.8 x 300 mm) x 1 G4000HxL (7.8 x 300 mm) x 1 G3000HxL (7.8 x 300 mm) x 1 G2000HxL (7.8 x 300 mm) x 1 Mobile phase: THF (tetrahydrofuran) Flow rate: 1.0mL / min Set temperature: 40℃ Injection volume: 100 μL (Sample concentration: 0.4%) The number-average molecular weight was measured based on polystyrene (*). *Polystyrene: Manufactured by Tosoh Corporation, TSK standard polystyrene

[0026] Component (E) can be used alone or in combination of two or more types. From the viewpoint of not feeling sticky during application and the smoothness and softness of the skin after application, the content is preferably 0.1 to 5% by mass of the total composition, more preferably 1 to 2.5% by mass, and even more preferably 1.5 to 2.2% by mass.

[0027] The aqueous cosmetic composition of the present invention preferably further contains polyhydric alcohols other than component (E), which can reduce stickiness as the aqueous cosmetic composition dries, improve the smoothness of the skin after application and drying, and improve the softness of the skin after application and drying. A polyhydric alcohol is a compound that has two or more hydroxyl groups in its molecule, and any of those commonly used in cosmetics will suffice. Examples of dihydric alcohols include ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, tripropylene glycol, polypropylene glycol, 1,3-butylene glycol, and propanediol. Examples of trihydric alcohols include glycerin and trimethylolpropane. Examples of tetrahydric alcohols include diglycerin and erythritol. Examples of pentahydric or higher polyhydric alcohols include polyglycerins such as triglycerin; sugars and sugar alcohols such as glucose, maltose, maltodose, sucrose, xylitol, sorbitol, malbitol, polyoxyethylene methyl glucoside, polyoxyethylene ethyl glucoside, and polyoxyethylene propylene glucoside.

[0028] As for the polyhydric alcohol, from the viewpoint of reducing stickiness as the aqueous cosmetic dries, improving the smoothness of the skin after application and drying, and improving the softness of the skin after application and drying, it is preferable to include at least one or more selected from dihydric alcohols, trihydric alcohols, tetrahydric alcohols, and sugar alcohols; more preferably to include at least one or more selected from dihydric alcohols, trihydric alcohols, and tetrahydric alcohols; even more preferably to include at least one or more selected from propanediol, dipropylene glycol, 1,3-butylene glycol, glycerin, and diglycerin; and even more preferably to include one or more selected from dipropylene glycol, 1,3-butylene glycol, and glycerin.

[0029] Polyhydric alcohols can be used individually or in combination of two or more types. From the viewpoint of reducing stickiness as the aqueous cosmetic dries, improving the smoothness of the skin after application and drying, and improving the softness of the skin after application and drying, the content is preferably 5 to 40% by mass of the total composition, more preferably 10 to 30% by mass, and even more preferably 14 to 25% by mass.

[0030] In addition to the above-mentioned components, the aqueous cosmetic composition of the present invention may contain components commonly used in cosmetics, such as ascorbic acid derivatives, surfactants other than component (C), water-soluble thickeners other than component (B), powders, antioxidants, UV absorbers, fragrances, preservatives, pH adjusters, blood circulation promoters, cooling agents, antiperspirants, bactericides, skin activators, refreshing agents, and the like.

[0031] The aqueous cosmetic composition of the present invention is an aqueous cosmetic composition mainly composed of water and a water-soluble component of component (D), and also includes oil-in-water emulsion cosmetic compositions. The oily component content of the aqueous cosmetic composition of the present invention is preferably 1% by mass or less, more preferably 0.5% by mass or less, and even more preferably 0.1% by mass or less, from the viewpoint of not feeling sticky during application and the smoothness of the skin after application.

[0032] The aqueous cosmetic composition of the present invention can be manufactured by conventional methods. For example, it can be manufactured by adding component (B) and, if necessary, component (E) to a portion of component (D), preparing a solution by completely dissolving them, separately adding components (A) and (C) and the remaining components to the remaining component (D), stirring, and then adding the aforementioned solution and stirring. The aqueous cosmetic composition of the present invention can be used, for example, as a lotion, gel, or serum, with one selected from lotion and gel being preferred, and lotion being more preferred. [Examples]

[0033] Examples 1-10, Comparative Examples 1-3 Aqueous cosmetics (lotions) with the compositions shown in Tables 1 to 3 were manufactured, and their non-greasy feel on the skin during application, non-stickiness when the aqueous cosmetic dried, skin smoothness after application and drying, and skin softness after application and drying were evaluated. The results are also shown in Tables 1 to 3.

[0034] (Manufacturing method) Component (B) was added to a portion of component (D), and component (E) was added as needed. The mixture was stirred at 80°C until completely dissolved, and then returned to room temperature (Solution 1). Components (A) and (C) and the remaining components were added to the remaining component (D), stirred with a propeller (250 rpm) at room temperature, then Solution 1 was added and stirred to obtain an aqueous cosmetic (lotion).

[0035] (Evaluation method) Three expert panelists applied 0.2g of each water-based lotion to the back of their cleansed hands and massaged them for 20 seconds using their index and middle fingers, rotating once per second in a circle approximately 4cm in diameter. They then evaluated each item as follows.

[0036] (1) No stickiness on the skin during application: The degree to which the product felt sticky on the skin during application was evaluated on a 10-point scale, with 1 representing a sticky feeling and 10 representing no stickiness. The evaluation results are shown as the total score of the three participants. (2) Non-stickiness when water-based cosmetics dry: The non-stickiness of water-based cosmetics upon drying was evaluated on a 10-point scale, with 1 being sticky and 10 being not sticky. The evaluation results are shown as the total score of three people. (3) Smoothness of the skin after application and drying: The smoothness of the skin after application and drying was evaluated on a 10-point scale, with 1 representing not feeling smooth and 10 representing feeling smooth. The evaluation results are shown as the total score of the three participants. (4) Skin softness after application and drying: The softness of the skin after application and drying was evaluated on a 10-point scale, with 1 being "not soft" and 10 being "soft." The evaluation results are shown as the total score of the three participants.

[0037] [Table 1]

[0038] [Table 2]

[0039] Table 3

Claims

1. The following components (A), (B), (C), and (D): (A) Cyclohexane-1,4-dicarboxylic acid bisethoxydiglycol, (B) Polysaccharides containing at least xanthan gum: 0.02 to 0.5% by mass, (C) Polyether-modified silicone 0.04 to 0.1% by mass, (D) Water An aqueous cosmetic containing and having a mass ratio (A) / (B) of component (A) to component (B) of 1 to 50.

2. The aqueous cosmetic composition according to claim 1, wherein the content of component (A) is 0.05 to 2% by mass.

3. Furthermore, the aqueous cosmetic composition according to claim 1 or 2, further comprising (E) polyethylene glycol having a number average molecular weight of 200 to 20,000.

4. The aqueous cosmetic composition according to claim 3, wherein the content of component (E) is 0.1 to 5% by mass.

5. The aqueous cosmetic composition according to any one of claims 1 to 4, wherein the content of component (D) is 40 to 93% by mass.

6. The aqueous cosmetic composition according to any one of claims 1 to 5, wherein the mass ratio (B) / (C) of component (B) to component (C) is 0.1 to 5.

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