JP2014148471A - Skin cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a skin cosmetic having excellent moisture sustainability, while being able to add a compatibility with the skin without loosing thickness feeling at the time of application and a moist feeling without stickiness to the skin.SOLUTION: There is provided a skin cosmetic containing (A) polyhydric alcohol and/or amino acid, (B) polyoxyalkylene alkyl glucoside, (C) polyoxyethylene sorbitol fatty acid ester, and (D) water-soluble polymer.

Description

  The present invention relates to a cosmetic for skin.

  In recent years, cosmetics for skin containing a relatively large amount of water have been used for the purpose of imparting moderate moisture, and attention is being paid to the sustainability of the effect. A moisturizing agent is widely used as a moisturizing component, but in order to exhibit excellent sustainability, there is a problem that a moisturizing agent must be blended in a high amount to cause stickiness.

  Among the cosmetics for skin, those with a composition containing a relatively large amount of water tend to be repelled on the skin due to poor affinity to the skin at the time of application, and the skin feels bad. There was a problem.

  Therefore, conventionally, in order to improve skin familiarity, attempts have been made to add ethanol or amphiphilic ester oils.

  However, in these attempts, although the penetrating feeling can be increased to some extent, there is a problem that the odor of alcohol is felt, a problem that the feeling of thickness at the time of application is impaired, a problem that the feeling of use becomes too light, and a sustained moisturizing feeling. There was a problem that it could not be obtained.

Attempts have also been made to improve skin familiarity using surfactants.
However, since it is necessary to transparently solubilize each cosmetic material blended from the viewpoint of stability, it is necessary to select a surfactant having a high HLB value. There was a problem of being inferior.

  Therefore, in order to enhance skin familiarity, cosmetics containing dextran (see, for example, Patent Document 1), cosmetics containing oligosaccharide and agar (see, for example, Patent Document 2), silicone surfactants and poly Cosmetics containing oxyethylene hydrogenated castor oil (see, for example, Patent Document 3) have been proposed.

  However, although these proposals can increase the familiarity of the skin to some extent, there is a problem that the feeling of thickness at the time of application is impaired and an excellent feel cannot be obtained.

JP 2004-059473 A JP 2007-269747 A JP 2011-116664 A

  To provide skin cosmetics that can be applied to the skin without damaging the feeling of thickness at the time of application, and can provide a moist and moist feel to the skin, as well as excellent moisture sustainability. Is an issue.

  Specifically, the gist of the present invention is (S) for skin containing polyhydric alcohol and / or amino acid, (B) polyoxyalkylene alkyl glucoside, (C) polyoxyethylene sorbitol fatty acid ester, and (D) water-soluble polymer. It relates to cosmetics.

  The skin cosmetic composition of the present invention has an effect of maintaining the moistness while maintaining a good moist feeling without sticking to the feeling of thickness at the time of application and giving a moist and moist feel. .

(A) component (A) component in this specification is a polyhydric alcohol and / or an amino acid. By applying the component (A) to the skin cosmetic, an effect of mainly moisturizing the skin is exhibited.

  Examples of the polyhydric alcohol include glycerin, diglycerin, 1,3-butylene glycol, propylene glycol, dipropylene glycol, polyethylene glycol, 1,2-pentanediol, pentylene glycol, 1,2-hexanediol, 1,2- Examples include octanediol, 1,2-decanediol, sorbitol, xylitol, raffinose, glucose and maltitol. As the polyethylene glycol, those having an average molecular weight of 200 to 20000 are preferable.

  Amino acids can also be used as amino acid salts. As amino acids, trimethylglycine, glycine, L-arginine hydrochloride, L-alanine, β-alanine, L-aspartic acid, L-glutamic acid, L-glutamic acid hydrochloride, L-glutamine, sarcosine, L-histidine, L- Isoleucine, L-leucine, L-lysine, L-lysine hydrochloride, L-ornithine hydrochloride, L-proline, L-phenylalanine, L-serine, L-threonine, L-tryptophan, L-tyrosine, L-valine, Examples thereof include L-doper and L-α aminobutyric acid.

(A) A component can use 1 type (s) or 2 or more types.
(A) Although the mixing ratio of both in the case of using a polyhydric alcohol and an amino acid together as a component is not specifically limited, For example, as mass ratio, polyhydric alcohol: amino acid shall be the range of 1: 99-99: 1. Is preferable, and the range of 5:95 to 95: 5 is more preferable.

  The amount of the component (A) in the skin cosmetic is preferably 3 to 35% by mass, more preferably 5 to 30% by mass, and further preferably 9 to 25% by mass. It is preferably 3% by mass or more from the viewpoint of imparting moisture and imparting an appropriate feeling of thickness at the time of application, and is preferably 35% by mass or less from the viewpoint of preventing excessive stickiness. In addition, when using a polyhydric alcohol and an amino acid together, as the quantity of (A) component, it is the total quantity of both.

(B) component (B) component in this specification is a polyoxyalkylene alkyl glucoside. By applying the component (B) to the cosmetic for skin, an effect of mainly imparting moisture persistence is exhibited.

  As the polyoxyalkylene alkyl glucoside, for example, one or two alkylene oxides selected from ethylene oxide and propylene oxide can be used which are added to the alkyl glucoside. About 1-20 mol is preferable. As an alkyl group in polyoxyalkylene alkyl glucoside, a C1-C4 thing is preferable and a methyl group, an ethyl group, a propyl group, an isopropyl group etc. are preferable examples. Preferable specific examples of the polyoxyalkylene alkyl glucoside include polyoxyethylene methyl glucoside, and more specifically, POE (10) methyl glucoside, POE (20) methyl glucoside, POP (10) methyl glucoside and POP ( 20) methyl glucoside and the like. In this specification, polyoxyethylene is abbreviated as POE, polyoxypropylene is abbreviated as POP, and the number in parentheses is the average number of moles added. Such polyoxyalkylene alkyl glucoside can be easily obtained commercially.

(B) 1 type (s) or 2 or more types can be used for a component.
0.1-12 mass% is preferable, as for the quantity of the (B) component in skin cosmetics, 0.5-10 mass% is more preferable, and 1-8 mass% is further more preferable. 0.1 mass% or more is preferable from the viewpoint of imparting an appropriate thickness feeling at the time of application and from the viewpoint of sustaining moisture, and 12 mass% or less is preferable from the viewpoint of not giving excessive stickiness.

(C) Component (C) component in this specification is polyoxyethylene sorbitol fatty acid ester. By applying the component (C) to the cosmetic for skin, the effect of mainly improving the familiarity with the skin is exhibited.

  As an average addition mole number of the oxyethylene group in polyoxyethylene sorbitol fatty acid ester, 5-60 are preferable. As the fatty acid constituting the polyoxyethylene sorbitol fatty acid ester, those having 12 to 18 carbon atoms are preferable, and specifically, oleic acid, stearic acid, isostearic acid and the like are preferable examples. Furthermore, the number of fatty acid esters in the polyoxyethylene sorbitol fatty acid ester is preferably 1 to 6, and more preferably 1 to 5. Preferable specific examples of the polyoxyethylene sorbitol fatty acid ester include polyoxyethylene sorbitol mono fatty acid ester, polyoxyethylene sorbitol tetra fatty acid ester and polyoxyethylene sorbitol penta fatty acid ester, and more specifically, monolauric acid POE. (6) Sorbite, tetraoleic acid POE (60) sorbit, tetrastearic acid POE (60) sorbit, tetraisostearic acid POE (30) sorbit, tetraoleic acid POE (40) sorbit, pentaoleic acid POE (40) sorbit, etc. Is mentioned. Such polyoxyethylene sorbitol fatty acid esters can be easily obtained commercially.

(C) A component can use 1 type (s) or 2 or more types.
0.005-5 mass% is preferable, as for the quantity of (C) component in skin cosmetics, 0.01-3 mass% is more preferable, and 0.03-0.1 mass% is further more preferable. The amount is preferably 0.005% by mass or more from the viewpoint of good skin familiarity and a moderate thickness feeling at the time of application, and preferably 5% by mass or less from the viewpoint of not giving excessive stickiness.

(D) component (D) component in this specification is a water-soluble polymer. However, the water-soluble polymer corresponding to the component (B) or the component (C) is not included in the component (D). By applying the component (D) to the skin cosmetic, not only the viscosity is imparted to give a high-class feeling, but also the effect of imparting an appropriate thickness feeling at the time of application is exhibited.

  Examples of the water-soluble polymer include water-soluble natural polymers, semi-synthetic polymers, and synthetic polymers. Specific examples of the natural polymer include gum arabic, gum tragacanth, guar gum, xanthan gum, locust bean gum, karaya gum, iris moss, quince seed, gelatin, shellac, rosin, and casein. Specific examples of the semi-synthetic polymer include sodium carboxymethyl cellulose, hydroxyethyl cellulose, methyl cellulose, ethyl cellulose, sodium alginate, ester gum, nitrocellulose, hydroxypropyl cellulose, hydroxypropyl methylcellulose, crystalline cellulose and the like. Specific examples of the synthetic polymer include polyvinyl alcohol, sodium polyacrylate, carboxyvinyl polymer, acrylic acid / alkyl methacrylate copolymer, alkyl acrylate copolymer, polyvinyl methyl cellulose, polyethylene glycol, polyamide resin, and the like. be able to. Such a water-soluble polymer can be easily obtained commercially.

  When a carboxyvinyl polymer, an acrylic acid / alkyl methacrylate copolymer, or an alkyl acrylate copolymer is used, it is usually neutralized with a basic substance. Examples of the basic substance include alkanolamines such as triethanolamine and monoethanolamine, inorganic bases such as ammonia, sodium hydroxide and potassium hydroxide, and basic amino acids such as arginine. The addition amount of the basic substance is an amount sufficient to neutralize these polymers, and may be appropriately blended according to the type and amount of these components.

(D) A component can use 1 type (s) or 2 or more types.
In the present specification, it is more preferable to use an acrylic acid / alkyl methacrylate copolymer and / or an alkyl acrylate copolymer from the viewpoint of imparting an optimum thickness feeling during coating.

  The mixing ratio of the acrylic acid / alkyl methacrylate copolymer and the alkyl acrylate copolymer in combination as the component (D) is not particularly limited. For example, the mass ratio may be acrylic acid / alkyl methacrylate copolymer. The polymer: alkyl acrylate copolymer is preferably in the range of 1:99 to 99: 1, more preferably in the range of 5:95 to 95: 5.

  The amount of the component (D) in the skin cosmetic is preferably 0.04 to 2% by mass, more preferably 0.06 to 1.5% by mass, and further preferably 0.3 to 1% by mass. 0.04 mass% or more is preferable from the viewpoint of imparting an appropriate thickness feeling at the time of application, and 2 mass% or less is preferable from the viewpoint of not giving excessive stickiness. When the acrylic acid / alkyl methacrylate copolymer and the alkyl acrylate copolymer are used in combination, the amount of the component (D) is the total amount of both.

  The skin cosmetic of the present invention may further contain cyclohexane-1,4-dicarboxylic acid bisethoxydiglycol and / or (eicosandioic acid / tetradecanedioic acid) polyglyceryl as component (E). By further including the component (E) in the skin cosmetic, the effect of enhancing the permeation into the skin, imparting better moisture, and maintaining the moisture is exhibited.

  In the present specification, the average degree of polymerization of polyglycerin constituting (eicosandioic acid / tetradecanedioic acid) polyglyceryl is not particularly limited, but is preferably 2 to 15, more preferably 8 to 15, and still more preferably. 10. Cyclohexane-1,4-dicarboxylic acid bisethoxydiglycol and (eicosandioic acid / tetradecanedioic acid) polyglyceryl can be easily obtained commercially.

  As the component (E), the mixing ratio of cyclohexane-1,4-dicarboxylic acid bisethoxydiglycol and (eicosandioic acid / tetradecanedioic acid) polyglyceryl is not particularly limited. , Cyclohexane-1,4-dicarboxylic acid bisethoxydiglycol: (eicosandioic acid / tetradecanedioic acid) polyglyceryl is preferably in the range of 1:99 to 99: 1, and in the range of 5:95 to 95: 5. More preferably.

  0.005-2 mass% is preferable, as for the quantity of (E) component in skin cosmetics, 0.01-1.5 mass% is more preferable, and 0.1-0.3 mass% is further more preferable. 0.005 mass% or more is preferable from a viewpoint of improving a penetrating feeling, and 2 mass% or less is preferable from a viewpoint which does not impair a feeling of thickness excessively. In addition, when using together cyclohexane-1, 4- dicarboxylic acid bisethoxydiglycol and (eicosane diacid / tetradecanedioic acid) polyglyceryl, it is the total amount of both as an amount of (E) component.

Other components In the present specification, for example, the following components that can be blended in cosmetics can be added to the skin cosmetic of the present invention as needed. For example, water, surfactants other than component (B) and component (C), fats and oils, hydrocarbon oils, waxes, higher fatty acids, fatty acid ester oils, higher alcohols, lower alcohols, sterols, humectants, inorganic pigments, Examples include pigments, antioxidants, ultraviolet absorbers, vitamins, astringents, whitening agents, animal and plant extracts, and sequestering agents. In addition to the above-described components, components usually used in cosmetics can be arbitrarily arbitrarily blended.

  The amount of water in the skin cosmetic of the present invention is not particularly limited. For example, it preferably occupies 30 to 96% by mass, more preferably 50 to 90% by mass of the skin cosmetic. More preferably, it occupies 60 to 85% by mass. From the viewpoint of imparting moisture to the skin, the amount of water is preferably 30% by mass or more of the skin cosmetic, and from the viewpoint of preventing a watery feel, the amount of water is preferably 98% by mass or less of the skin cosmetic.

  The method for preparing the skin cosmetic of the present invention is not particularly limited, and can be prepared by mixing each raw material with a known mixing device.

The properties of the skin cosmetic of the present invention are not particularly limited, and examples thereof include liquids, lotions, emulsions, creams, gels and the like. Especially, it is preferable that it is a 1 layer type lotion from a viewpoint from which a desired effect is fully exhibited.
Although the viscosity of skin cosmetics is not specifically limited, For example, 50-5000 mPa * s is preferable at 25 degreeC, and 80-3000 mPa * s is more preferable. Adjustment of the viscosity of skin cosmetics can be carried out by appropriately increasing or decreasing the amount of water or the amount of component (D), for example.

  Although pH of skin cosmetics is not specifically limited, 4-25 are preferable at 25 degreeC from a viewpoint of the influence on a human body, and 5-8 are more preferable. The pH of the skin cosmetic can be adjusted by adding an acid or alkali as appropriate.

  Hereinafter, the present invention will be described in more detail based on examples and the like, but the present invention is not limited only to such examples.

(Sample preparation example)
Each sample of Examples 1-20 and Comparative Examples 1-10 was prepared according to the composition described in Tables 1-3, and it used for the following evaluation. The results are shown in Tables 1 to 3, respectively. In addition, all evaluation was implemented on the constant conditions of constant temperature and humidity of 23 degreeC and 60% of humidity.

(Test Example 1: Evaluation during application)
20 female sensory evaluation panels without makeup applied each sample 2g obtained in the examples and comparative examples to the entire face, "thickness on the skin" at the time of application and "familiarity to the skin" Sensory evaluation was performed according to the following evaluation criteria.

<Evaluation criteria for feeling of thickness>
◎: 16 or more out of 20 responded that they were excellent in thickness on the skin ○: 11-15 in 20 responded that they were excellent in thickness on the skin Δ: 6-10 in 20 However, it is said that it is excellent in the feeling of thickness on the skin ×: 5 or less of 20 people answered that it is excellent in the feeling of thickness on the skin

  Regarding the evaluation of the feeling of thickness, when each panelist felt a feeling of thickness similar to that felt when 2 g of a 1: 1 mixture of propylene glycol and dipropylene glycol was applied to the entire face, It is instructed to answer "It is excellent in thickness."

<Evaluation criteria for familiarity>
◎: More than 16 out of 20 responded that the touch to skin is high ○: 11 to 15 out of 20 responded that the touch to skin was high △: 6 to 10 out of 20 However, 5/20 or less respondents answered that they feel familiar with the skin.

  Regarding the evaluation of the familiar feeling, each panelist also felt that the familiarity of the skin was the same as the familiar feeling felt when 2 g of 0.3% by mass of glycerin mono-2-ethylhexyl ether aqueous solution was applied to the entire face. "I feel comfortable."

(Test Example 2: Evaluation after application)
By the same evaluation panel, sensory evaluation was performed according to the following evaluation criteria for “stickiness” and “moisture” after 3 minutes of evaluation in Test Example 1.

<Evaluation criteria for stickiness>
◎: More than 16 out of 20 responded that there was no stickiness ○: 11-15 out of 20 responded that there was no stickiness △: 6-10 out of 20 responded that there was no stickiness ×: 5 or less of 20 people answered that there was no stickiness

<Evaluation criteria for moisture>
◎: More than 16 out of 20 people answered that they had a moist and moist feeling ○: 11-15 people out of 20 responded that they had a moist and moist feel △: 6-10 out of 20 people Answer that there is a moist and moist feel ×: 5 or less of 20 people answered that there is a moist and moist feel

(Test Example 3: Sustainability evaluation)
Using the same evaluation panel, sensory evaluation was performed according to the following evaluation criteria for “continuation of moisture” after 2 hours of evaluation in Test Example 2.

<Evaluation criteria for sustaining moisture>
◎: More than 16 out of 20 responded that moist and moist feeling remained ○: 11 to 15 out of 20 responded that moist and moist feeling persisted △: Out of 20 6-10 respondents say that moist and moist feeling is maintained. X: 5 out of 20 respondents say moist and moist feeling is maintained.

Details of each raw material in the table are as follows.
Polyethylene glycol 1500 (manufactured by Sanyo Chemical Industries, trade name: PEG-1500, average molecular weight: 1500)
POE (10) methyl glucoside (Noveon, trade name: Glucam E-10)
POE (20) methyl glucoside (manufactured by NOF Corporation, trade name: Macbiobride MG-20E)
POP (10) methyl glucoside (manufactured by NOF Corporation, trade name: Macbiobride MG-10P)
POP (20) methyl glucoside (manufactured by NOF Corporation, trade name: Macbiobride MG-20P)

Tetraoleic acid POE (40) Sorbit (manufactured by Nippon Surfactant, trade name: NIKKOL GO-440V)
Tetraoleic acid POE (60) Sorbit (manufactured by Nippon Surfactant, trade name: NIKKOL GO-460V)
Tetrastearic acid POE (60) Sorbit (manufactured by Nippon Surfactant, trade name: NIKKOL GS-460V)
Tetraisostearic acid POE (30) Sorbit (manufactured by NOF Corporation, trade name: UNIOX ST-30IS)
Monolauric acid POE (6) Sorbit (manufactured by Nippon Surfactant, trade name: NIKKOL GL-1)
Pentaoleic acid POE (40) Sorbit (manufactured by NOF Corporation, trade name: UNIOX SP-40E)

Acrylic acid / alkyl methacrylate copolymer (manufactured by LUBRIZOL, trade name: PEMULEN TR-1)
Alkyl acrylate copolymer (Rohm and Haas, trade name: ACULYN (TM) 33)
Cyclohexane-1,4-dicarboxylic acid bisethoxydiglycol (manufactured by Nippon Seika Co., Ltd., trade name: Neosolue-Aquorio)
(Eicosanedioic acid / tetradecanedioic acid) polyglyceryl-10 (manufactured by Nippon Seika Co., Ltd., trade name: Neosolue-Aqua)
POE (50) hydrogenated castor oil (manufactured by Nippon Emulsion Co., Ltd., trade name: EMALEX HC-50)
POE (10) cetyl ether (manufactured by Nippon Surfactant, trade name: BC-10TX)
Polyethylene glycol laurate (12) (manufactured by Nippon Emulsion Co., Ltd., trade name: EMALEX PEL-12)
POE (20) glyceryl isostearate (manufactured by Nippon Emulsion Co., Ltd., trade name: EMALEX GWIS-120)

  From the results shown in Tables 1 to 3, the cosmetics for skin obtained in each example are familiar to the skin without impairing the feeling of thickness at the time of application, as compared with those obtained in each comparative example. It turns out that it is excellent. Moreover, after application | coating, while being able to give the moist and moist touch without a sticky feeling, it turns out that the moistness is maintained.

  The skin cosmetic of the present invention is used for, for example, the face and the body because it is excellent in skin conformity and can give a moist and moist feel without impairing the sense of thickness at the time of application. It can be used as skin care such as liquid, lotion, emulsion, cream and gel.

Claims (5)

  A skin cosmetic containing (A) a polyhydric alcohol and / or amino acid, (B) a polyoxyalkylene alkyl glucoside, (C) a polyoxyethylene sorbitol fatty acid ester, and (D) a water-soluble polymer.   The skin cosmetic according to claim 1, wherein the component (B) is polyoxyethylene methyl glucoside.   The component (C) is at least one selected from the group consisting of polyoxyethylene sorbitol monofatty acid ester, polyoxyethylene sorbitol tetrafatty acid ester, and polyoxyethylene sorbitol pentafatty acid ester according to claim 1 or 2. Cosmetic for skin.   The cosmetic for skin according to any one of claims 1 to 3, wherein the component (D) is an acrylic acid / alkyl methacrylate copolymer and / or an alkyl acrylate copolymer.   The skin cosmetic according to any one of claims 1 to 4, further comprising (E) cyclohexane-1,4-dicarboxylic acid bisethoxydiglycol and / or (eicosandioic acid / tetradecanedioic acid) polyglyceryl. .