Water-based cosmetics

Abstract

To provide an aqueous cosmetic which achieves three high levels of smoothness, skin compatibility and non-stickiness, and further has an excellent moisturizing feel. [Solution] An aqueous cosmetic preparation containing the following components (A) to (D). (A) Polysaccharides with a glucose ratio of 50% or more (B) Amphoteric polymer containing phosphorylcholine groups (C) Polyglyceryl-10 (eicosanedioic acid / tetradecanedioic acid) (D)Water

Description

[Technical field]

[0001] The present invention relates to an aqueous cosmetic preparation. [Background technology]

[0002] Cosmetics are required to give smoothness to the skin after application. "Smoothness" refers to the uniform and smooth feeling that the skin feels when touched after applying the cosmetic. "Smooth skin" is one of the keywords that evokes the image of beautiful skin, and the development of cosmetics that give smoothness to the skin is desired by many people. For example, Patent Document 1 proposes an external skin preparation that contains 1) one or more types selected from high-viscosity or solid silicones, and 2) an acrylic acid / alkyl methacrylate (C10-30) copolymer, and that has a moisturizing effect while also improving the morphology of the skin, such as by imparting smoothness. The skin topical preparation described in Patent Document 1 forms a film with 1) silicone and 2) acrylic polymer, and this film provides smoothness. Although there is no description of skin compatibility, this combination of polymer components is not considered to be an agent with excellent skin compatibility, and it is difficult to achieve a high level of smoothness, skin compatibility, and non-stickiness. In addition, although it is described that it provides moisturizing properties, the moisturizing feeling was insufficient. Note that "skin compatibility" refers to the feeling that the applied cosmetic material disappears smoothly from the skin. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2003-171259 A Summary of the Invention [Problem to be solved by the invention]

[0004] To provide an aqueous cosmetic which achieves high levels of smoothness, compatibility with the skin, and non-stickiness, and further has an excellent moisturizing feel. [Means for solving the problem]

[0005] The means for solving the problems of the present invention are as follows. 1. An aqueous cosmetic preparation comprising the following components (A) to (D): (A) Polysaccharides with a glucose ratio of 50% or more (B) Amphoteric polymer containing phosphorylcholine groups (C) Polyglyceryl-10 (eicosanedioic acid / tetradecanedioic acid) (D)Water 2. The aqueous cosmetic preparation according to 1, characterized in that the content of (A) in the entire cosmetic preparation is 0.005% by mass or more and 1.0% by mass or less. Effect of the Invention

[0006] According to the present invention, it is possible to obtain an aqueous cosmetic preparation which achieves high levels of smoothness, compatibility with the skin, and non-stickiness, and further has an excellent moisturizing feel. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0007] The aqueous cosmetic preparation of the present invention contains the following components (A) to (D). (A) Polysaccharides with a glucose ratio of 50% or more (B) Amphoteric polymer containing phosphorylcholine groups (C) Polyglyceryl-10 (eicosanedioic acid / tetradecanedioic acid) (D)Water

[0008] (A) Ingredient: Polysaccharides with a glucose ratio of 50% or more A polysaccharide with a glucose ratio of 50% or more means a polysaccharide in which 50% or more of the constituent monosaccharides are glucose. Note that a polysaccharide is a carbohydrate composed of 10 or more monosaccharides linked together, and the percentage indicates the ratio of the number of glucose units to the number of all constituent monosaccharides. Polysaccharides with a glucose ratio of 50% or more include sclerotium gum (100%), gellan gum (50%), tamarind gum (50%), succinoglycan (87.5%), starches such as corn starch, modified corn starch, and dextrin (100%), and one or more types can be used.

[0009] In terms of smoothness and non-stickiness, the aqueous cosmetic preparation of the present invention preferably contains 0.005% to 1.0% by mass of component (A) relative to the entire cosmetic preparation. The amount of component (A) relative to the entire cosmetic preparation is more preferably 0.01% by mass or more, even more preferably 0.02% by mass or more, and more preferably 0.5% by mass or less, even more preferably 0.4% by mass or less.

[0010] Component (B): Amphoteric polymer containing phosphorylcholine groups Component (B) has a phosphorylcholine group. The phosphorylcholine group is shown in the following formula (1). The phosphorylcholine group is a polar group portion of phospholipids that constitute cell membranes, and is an amphoteric polar group. [ka] Examples of the phosphorylcholine group-containing amphoteric polymer include polyquaternium-51, polyquaternium-61, polyquaternium-64, polyquaternium-65, polymethacryloyloxyethyl phosphorylcholine, etc., and polyquaternium-51, polyquaternium-61, and polymethacryloyloxyethyl phosphorylcholine are preferred. All of these are commercially available from NOF Corporation.

[0011] In terms of smoothness, the aqueous cosmetic preparation of the present invention preferably contains 0.001% to 0.5% by mass of component (B) relative to the total cosmetic preparation. The amount of component (B) relative to the total cosmetic preparation is more preferably 0.005% by mass or more, even more preferably 0.01% by mass or more, and more preferably 0.4% by mass or less, even more preferably 0.2% by mass or less.

[0012] (C) Ingredient: Polyglyceryl-10 (eicosane diacid / tetradecanedioic acid) Polyglyceryl-10 (eicosane diacid / tetradecanedioic acid) is an ester of a mixed fatty acid of eicosane diacid and tetradecanedioic acid and polyglycerin, and is a water-soluble oil. Component (C) is commercially available, for example, from Nippon Fine Chemical Co., Ltd.

[0013] In terms of compatibility with the skin, the aqueous cosmetic preparation of the present invention preferably contains component (C) in an amount of 0.1% by mass or more and 3.0% by mass or less relative to the total cosmetic preparation. The amount of component (C) in an amount of 0.2% by mass or more and 0.3% by mass or more is more preferred, and 2.0% by mass or less and 1.5% by mass or less is even more preferred.

[0014] (D) Component: Water The water that can be used in the aqueous cosmetic preparation of the present invention can be any water that can be used in cosmetics, topical medicines, quasi-drugs, etc., but purified water, distilled water, membrane-filtered water, and ion-exchanged water are preferred. The water may be used alone or in combination of two or more of the above. The aqueous cosmetic preparation of the present invention is an aqueous cosmetic preparation that contains water and a water-soluble component as the main components (D), and also includes oil-in-water emulsion cosmetic preparations. The blending amount of component (D) may be appropriately set, but is preferably 50% by mass or more, and more preferably 70% by mass or more, based on the total amount of the cosmetic.

[0015] In terms of smoothness and non-stickiness, the aqueous cosmetic preparation of the present invention preferably has a mass ratio (A / B) of component (A) to component (B) of 0.01 or more and 50 or less. The mass ratio (A / B) of component (A) to component (B) is more preferably 0.05 or more, even more preferably 0.1 or more, and more preferably 30 or less, even more preferably 15 or less.

[0016] The aqueous cosmetic preparation of the present invention preferably has a medium viscosity with good fluidity in terms of smoothness, compatibility with the skin, and non-stickiness. Specifically, the viscosity measured with a B-type viscometer (25°C, rotor No. 1 to No. 4, 12 revolutions, 30 seconds) is preferably 200 mPa·s or more, more preferably 500 mPa·s or more, and even more preferably 1000 mPa·s or more, and is preferably 20000 mPa·s or less, more preferably 15000 mPa·s or less, and even more preferably 10000 mPa·s or less.

[0017] In addition to the components (A) to (D), the aqueous cosmetic preparation of the present invention may contain components typically used in cosmetics, such as polyhydric alcohols, sugars, sugar alcohols, pigments, inorganic powders, organic powders, plant extracts, pH adjusters, salts, thickeners, preservatives, sequestering agents, colorants, and fragrances. It may also contain other medicinal ingredients and physiologically active ingredients. However, in terms of smoothness, the aqueous cosmetic preparation of the present invention preferably contains 10% by mass or less of oil relative to the entire cosmetic preparation, more preferably 5.0% by mass or less, even more preferably 3.0% by mass or less, and even more preferably 1.0% by mass or less.

[0018] Examples of polyhydric alcohols, sugars, and sugar alcohols include glycerin, diglycerin, 1,3-butylene glycol, propylene glycol, dipropylene glycol, 1,2-pentanediol, glucose, sorbitol, mannose, mannitol, galactose, galactitol, maltose, maltitol, trehalose, erythrose, erythritol, xylose, xylitol, sucrose, lactose, lactitol, difructose anhydride, methyl gluceth-10, PPG-10 methyl glucose, and glycereth-26.

[0019] Examples of pigments, inorganic powders, and organic powders include talc, kaolin, silica, mica, zeolite, bentonite, titanium dioxide, iron oxide, crystalline cellulose, nylon powder, poly(meth)acrylic acid ester, and polymethylsilsesquioxane powder.

[0020] The thickening agent may include carbomer. Examples of preservatives include phenoxyethanol, methylparaben, and ethylparaben. Examples of the sequestering agent include disodium ethylenediaminetetraacetate, edetic acid, and edetate salts such as sodium edetate. Examples of medicinal ingredients include vitamin C compounds such as L-ascorbic acid, L-ascorbic acid phosphate, L-ascorbic acid monopalmitate, L-ascorbic acid dipalmitate, and L-ascorbic acid 2-glucoside; skin whitening agents such as glutathione and saxifrage extract; skin activators such as royal jelly and beech tree extract; blood circulation promoters such as capsaicin, zingerone, cantharides tincture, caffeine, tannic acid, and γ-oryzanol; glycyrrhizinic acid derivatives such as dipotassium glycyrrhizinate and stearyl glycyrrhizinate; anti-inflammatory agents such as azulene; and lysozyme chloride.

[0021] The aqueous cosmetic preparation of the present invention can be used as a skin lotion, emulsion, beauty essence, body lotion, etc. EXAMPLES

[0022] Each component was mixed with stirring to obtain an aqueous cosmetic preparation according to the composition in Tables 1 to 3 (the numerical values ​​for the blending amounts indicate mass %). The obtained cosmetics were evaluated by the following methods, and the results are shown in Tables 1 to 3.

[0023] <Evaluation method> A panel of three experts conducted a sensory evaluation of each cosmetic product immediately after applying about 0.3 mL of each product to the inside of the forearm, using the following scoring system, and gave scores as follows. A score of △ or higher was considered to be a pass. Smoothness Smoothness refers to the uniform and smooth sensation felt when touching the skin after applying a cosmetic product to the skin, and is the opposite sensation to friction or a squeaky feeling. ◎: Feels extremely smooth. ○: Feels smooth. △: Feels slightly smooth. ×: Does not feel smooth. -Skin familiarity Skin compatibility is the sensation of cosmetics being absorbed and soaked into the skin when applied to the skin. After a certain time has passed since application, there is no sense of residual liquid, which is different from the feeling that the cosmetic is being repelled. It is a contradictory feeling. ◎: Very good compatibility with skin. ○: Blends well with skin. △: Blends well with the skin. ×: Not compatible with skin.

[0024] - Non-sticky Stickiness is the sticky feeling that you feel when you touch your skin after applying cosmetics to it for a certain period of time. Or it refers to a sticky residual feeling. ◎: Does not feel sticky. ○: Almost no stickiness is felt. △: Feels slightly sticky. ×: Feels sticky. Moisturizing feeling Moisturizing sensation refers to the moist feeling you get when you touch your skin after applying cosmetics. It is. ◎: Feels very moisturizing. 〇: Feels moisturizing. △: Slight moisturizing sensation. ×: No moisturizing sensation.

[0025] ·SEM image observation A piece of black artificial leather cut to a 1.5 cm x 1.5 cm square was attached to the bottom of a 3.3 cm diameter plastic cup, and 6.4 g of each water-based cosmetic was poured onto the artificial leather. The cup was then left to stand in an open-system thermostatic chamber at 50°C for one day to form a coating. Thereafter, the formed coating was observed by SEM and evaluated according to the following criteria. ◎: The unevenness of the artificial leather is completely invisible. Good: The unevenness of the artificial leather is barely visible. △: The unevenness of the artificial leather is slightly visible. ×: The unevenness of the artificial leather is clearly visible.

[0026] [Table 1]

[0027] [Table 2]

[0028] [Table 3]

[0029] The aqueous cosmetic composition of the present invention containing components (A) to (D) was able to achieve the three characteristics of smoothness, skin compatibility, and non-stickiness, and also had excellent moisturizing properties. In addition, SEM images confirmed that a smooth coating without unevenness was formed. The aqueous cosmetic preparations obtained in the comparative examples that did not contain any of the components (A) to (D) were inferior in at least one of smoothness, compatibility with the skin, and non-stickiness.

[0030] An example of a prescription is shown below. Formulation example 1: Lotion (Ingredients) (mass%) water residue BG 5.0 Pentylene glycol 1.5 Glycerin 5.0 Sclerotium gum 0.05 Ethylhexylglycerin 0.1 Betaine 1.0 Raffinose 1.0 Glycyrrhizic acid 2K 0.1 Polyquaternium-51 0.005 Polyglyceryl-10 (eicosanedioic acid / tetradecanedioic acid) 0.6 Hydrogenated lecithin 0.01 Chamomile Flower Extract 0.1 Citric acid 0.02 Sodium citrate 0.25

[0031] Formulation example 2: Serum (Ingredients) (mass%) water residue BG 5.0 Pentylene glycol 2.0 Glycerin 8.0 Diglycerin 2.0 Ethylhexylglycerin 0.1 Glycereth-26 1.0 Betaine 1.0 Polyquaternium-51 0.01 (Acrylates / Alkyl acrylate (C10-30)) Crosspolymer 0.1 Glycyrrhizic acid 2K 0.1 PEG-60 hydrogenated castor oil 0.2 Isotridecyl isononanoate 0.1 Hydrogenated lecithin 0.05 Sclerotium gum 0.05 Polyglyceryl-10 (eicosanedioic acid / tetradecanedioic acid) 0.6 Potassium hydroxide 0.025

[0032] Formulation example 3: Emulsion (Ingredients) (mass%) water residue BG 5.0 Pentylene glycol 1.5 Glycerin 6.0 Diglycerin 1.0 Ethylhexylglycerin 0.1 Sclerotium gum 0.05 Modified cornstarch 0.1 Trehalose 1.0 Ascorbyl Glucoside 2.0 Glycyrrhizic acid 2K 0.1 Isotridecyl isononanoate 0.5 Triethylhexanoin 1.0 Phytosteryl / Octyldodecyl Lauroyl Glutamate 0.5 Hydrogenated lecithin 0.3 (Acrylates / alkyl acrylate (C10-30)) crosspolymer 0.2 Potassium hydroxide 0.04 Polyquaternium-51 0.05 Polyglyceryl-10 (eicosanedioic acid / tetradecanedioic acid) 0.6 Betaine 1.0

Claims

1. An aqueous cosmetic preparation comprising the following components (A) to (D): (A) one or more selected from sclerotium gum, tamarind gum, succinoglycan, corn starch, and modified corn starch (B) Phosphorylcholine group-containing amphoteric polymer (C) Polyglyceryl-10 (eicosanedioic acid / tetradecanedioic acid) (D) Water

2. The content of (A) in the entire cosmetic is 0.005% by mass or more and 1.0% by mass or less. The aqueous cosmetic preparation according to claim 1 ,

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