Cosmetics

Abstract

To provide a cosmetic that can satisfy improved use feeling, high warmth-imparting effect, and excellent emulsion stability at the same time.SOLUTION: A cosmetic contains (A) a polyhydric alcohol, (B) a glycyrrhizinate, (C) sapindaceous pericarp extract, (D) oil, and (E) water. In the cosmetic, the content of the polyhydric alcohol is 30 mass% or more relative to the total mass of the cosmetic.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to a cosmetic preparation that can impart a warming sensation to the skin when applied externally. [Background technology]

[0002] Providing a moderate warmth to the skin is said to promote blood circulation in the skin, increase metabolism, and bring about favorable effects on the mind and body, such as relaxation and fatigue recovery. In order to achieve such effects, it is already known to incorporate moisturizing agents such as polyhydric alcohols into cosmetics for external use on the skin, and these are widely used mainly as body care products for massage.

[0003] On the other hand, oil may be added to a warming cosmetic that contains a large amount of a moisturizing agent such as polyhydric alcohol in order to improve the feeling of use or the cleansing effect. In such a case, it is common to add a surfactant to suppress the separation of the oil and maintain the stability of the cosmetic. However, when the amount of the surfactant is increased to improve the stability of the cosmetic, the surfactant may cause stickiness during use. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2007-326806 A Summary of the Invention [Problem to be solved by the invention]

[0005] In order to solve the above problems, there has been a demand for the development of a warming cosmetic composition that has a low surfactant content or is substantially free of surfactant. [Means for solving the problem]

[0006] According to the present invention, the following inventions are provided. [1] (A) a polyhydric alcohol, (B) glycyrrhizinate, (C) Sapindus mukorossi peel extract, (D) oil, and (E)Water A cosmetic comprising the above-mentioned formula, wherein the blending amount of the polyhydric alcohol is 30 mass% or more based on the total mass of the cosmetic. [2] The cosmetic according to [1], wherein the blending amount of the polyhydric alcohol is 40 mass% or more, based on the total mass of the cosmetic. [3] The cosmetic preparation according to [1] or [2], which is an oil-in-water cosmetic preparation. [4] The cosmetic according to any one of [1] to [3], wherein the blending amount of the oil component is 10 mass% or more, based on the total mass of the cosmetic. [5] The cosmetic preparation according to any one of [1] to [4], wherein the polyhydric alcohol is one or more selected from the group consisting of glycerin, diglycerin, polyglycerin, 1,3-butylene glycol, ethylene glycol, propylene glycol, dipropylene glycol, polyethylene glycol, polypropylene glycol, polyethylene glycol-polypropylene glycol, trimethylolethane, trimethylolpropane, erythritol, pentaerythritol, sorbitan, glucose, sorbitol, maltitol, sucrose, raffinose, hexylene glycol, 1,2-pentanediol, and trehalose. [6] The cosmetic preparation according to any one of [1] to [5], wherein the glycyrrhizinate is dipotassium glycyrrhizinate. [7] The cosmetic according to any one of [1] to [6], wherein the blending amount of the water is 20 mass % or less, based on the total mass of the cosmetic. [8] The cosmetic preparation according to any one of [1] to [7], which is substantially free of a surfactant. [9] The cosmetic preparation according to any one of [1] to [8], which is a warming cosmetic preparation. Effect of the Invention

[0007] According to the present invention, a cosmetic preparation is provided which can provide a satisfactory feeling of use even when the blending ratio of oil is high, and has an excellent warming effect and excellent emulsion stability. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] Hereinafter, an embodiment of the present invention will be described in detail.

[0009] The cosmetic preparation according to the present invention contains, as essential ingredients, (A) a polyhydric alcohol, (B) a glycyrrhizinate, (C) a mukurossi peel extract, (D) an oil, and (E) water.

[0010] [Polyhydric alcohol] In the present invention, the polyhydric alcohol (A) imparts a warming sensation function to the cosmetic. This function is brought about by the heat of hydration that is generated when the polyhydric alcohol comes into contact with moisture on the skin. Such a polyhydric alcohol is an alcohol having two or more hydroxyl groups in the same molecule, and can be selected arbitrarily as long as it does not impair the effects of the present invention. Specifically, the polyhydric alcohol is preferably one or more selected from the group consisting of glycerin, diglycerin, polyglycerin, 1,3-butylene glycol, ethylene glycol, propylene glycol, dipropylene glycol, polyethylene glycol, polypropylene glycol, polyethylene glycol-polypropylene glycol, trimethylolethane, trimethylolpropane, erythritol, pentaerythritol, sorbitan, glucose, sorbitol, maltitol, sucrose, raffinose, hexylene glycol, 1,2-pentanediol, and trehalose.

[0011] In addition, in order for the cosmetic to exhibit a sufficient warming sensation function, it is preferable that the blending amount of polyhydric alcohol is large. Specifically, based on the base mass of the cosmetic, the blending amount of polyhydric alcohol needs to be 30 mass%, preferably 40.0 mass% or more, and more preferably 42.0 mass% or more. There is no particular upper limit on the blending amount of polyhydric alcohol, and it is determined according to the blending amounts of other ingredients blended in the cosmetic.

[0012] [Glycyrrhizinate] The cosmetic composition according to the present invention contains (B) glycyrrhizinate. Glycyrrhizic acid is an ingredient extracted from licorice, a perennial plant of the legume family, and has been used as a medicinal ingredient. Glycyrrhizic acid is a triterpene glycoside, and is known to have anti-inflammatory, anti-allergic, anti-tumor, anti-viral, and anti-fibrinolytic effects.

[0013] In the present invention, the glycyrrhizinate includes the salt of glycyrrhizinic acid and any base.Specific examples include glycyrrhizinic acid, dipotassium glycyrrhizinate, sodium glycyrrhizinate, and ammonium glycyrrhizinate.In the present invention, glycyrrhizinic acid is also included in the salt.Among these, dipotassium glycyrrhizinate is particularly preferably used.

[0014] The amount of glycyrrhizinate is not particularly limited, but it is preferable that it is high in order to obtain the effect of improving the stability of the cosmetic, and on the other hand, it is preferable that it is below a certain amount in order to maintain the feeling of use. Specifically, the amount of glycyrrhizinate is preferably 0.01 to 2 mass%, more preferably 0.04 to 0.8 mass%, based on the total mass of the cosmetic.

[0015] [Soapberry Peel Extract] The cosmetic preparation according to the present invention contains (C) Sapindus mukorossi peel extract, which contributes to improving the stability of the cosmetic preparation in combination with the above-mentioned (B) glycyrrhizinate.

[0016] Sapindus mukorossi peel extract is a natural ingredient extracted from the peel of Sapindus mukorossi, a plant of the Sapindaceae family, with water, ethanol, 1.3-butylene glycol, etc., and its main components are saponins. Sapindus mukorossi peel extract is commonly used as an ingredient in cosmetics, and any commercially available extract can be selected and used.

[0017] The blending amount of the soapberry peel extract is not particularly limited, but it is preferable that it is high in order to obtain the effect of improving the stability of the cosmetic, and on the other hand, it is preferable that it is below a certain level in order to maintain the feeling of use. Specifically, the blending amount of the soapberry peel extract is preferably 0.01 to 2 mass %, more preferably 0.05 to 1 mass %, based on the total mass of the cosmetic.

[0018] In the present invention, excellent emulsion stability is achieved by the combination of glycyrrhizinate and Sapindus mukorossi peel extract, and in order to achieve such effect d, it is preferable that the blending ratio of glycyrrhizinate to Sapindus mukorossi peel extract is within a certain range. Specifically, the ratio b / c of ​​the blending amount b of glycyrrhizinate to the blending amount c of Sapindus mukorossi peel extract is preferably 0.5 to 2, more preferably 0.8 to 1.25.

[0019] [Oil content] The cosmetic composition according to the present invention contains an oil component (D). In the present invention, the oil component can be selected from those generally used in cosmetics, and is not particularly limited.

[0020] in particular, (i) Ester oils, for example, diisobutyl adipate, diisopropyl adipate, di-2-ethylhexyl adipate, di-2-hexyldecyl adipate, di-2-heptylundecyl adipate, isostearyl isostearate, isopropyl isostearate, ethyl isostearate, octyldodecyl isostearate, butyl isostearate, hexyl isostearate, 2-hexyldecyl isostearate, isodecyl isononanoate, isononyl isononanoate, isotridecyl isononanoate, 2-ethylhexyl isononanoate, Octyl isopalmitate, isostearyl 2-ethylhexanoate, isostearyl 2-ethylhexanoate, cetostearyl 2-ethylhexanoate, isocetyl octanoate, octyldodecyl octanoate, isodecyl oleate, ethyl oleate, oleyl oleate, decyl oleate, cetyl caprate, monoglyceryl caprate, di-2-ethylhexyl succinate, octyl salicylate, myristyl salicylate, octyldodecyl dimethyloctanoate, isocetyl stearate, ethyl stearate, octyl stearate, diisopropyl dimerate Propyl, pentaerythritol tetraisostearate, pentaerythritol 2-ethylhexanoate, pentaerythritol tetra-2-ethylhexanoate, glyceryl triisostearate, trimethylolpropane triisostearate, polyglyceryl triisostearate, glyceryl triisopalmitate, glyceryl tri-2-ethylhexanoate, trimethylolpropane trioctanoate, caprylic / capric triglyceride, isostearyl palmitate, isopropyl palmitate, octyl palmitate, 2-methylpropyl palmitate -Hexyldecyl, isostearyl hydroxystearate, isocetyl hydroxystearate, 2-ethylhexyl hydroxystearate, octyldodecyl hydroxystearate, isostearyl pivalate, isodecyl pivalate, 2-octyldodecyl pivalate, methyl castor oil fatty acid, arachidyl propionate, isostearyl myristate, isocetyl myristate, isotridecyl myristate, isopropyl myristate, octyldodecyl myristate, decyl myristate, butyl myristate, ethyl mink oil fatty acid,Isostearyl laurate, hexyl laurate, etc. (ii) Hydrocarbon oils, such as liquid paraffin, isoparaffin, squalane, sugar squalene, squalene, paraffin, isoisodecane, isohexadecane, isobutene, hydrogenated polyisobutene, hydrogenated polydecene, petrolatum, polyethylene wax, microcrystalline wax, palm oil, jojoba oil, avocado oil, etc.; or (iii) Silicones, for example, methylpolysiloxane, octamethyltrisiloxane, decamethyltetrasiloxane, highly polymerized methylpolysiloxane, octamethylcyclotetrasiloxane, decamethylsiloclopentasiloxane, methylcyclopolysiloxane, methylhydrogenpolysiloxane, tetrahydrotetramethylcyclotetrasiloxane, trimethylsiloxysilicate, methylphenylpolysiloxane, crosslinked methylpolysiloxane, stearoxy-modified silicone, and the like; Examples include:

[0021] In the cosmetic according to the present invention, the oil is used for the purpose of improving the feeling of use and the cleansing effect. For this reason, the content of the oil is preferably 10% by mass or more based on the total mass of the cosmetic. On the other hand, if the oil is excessively blended, not only will the effect commensurate with the blending amount not be obtained, but the warming effect of the polyhydric alcohol may be impaired. For this reason, the content of the oil is more preferably 20 to 50% by mass based on the total mass of the cosmetic. By setting the blending amount of the oil within this range, a sufficient warming feeling can be obtained while providing a good feeling of use provided by the oil, such as lightness when applied to the skin and good spreadability, and further, an excellent cleansing effect can be obtained by blending an appropriate amount of the oil.

[0022] [water] In addition to the above-mentioned components, the cosmetic preparation according to the present invention further contains (E) water. As the water, water used in cosmetics, quasi-drugs, etc., can be used, such as purified water, ion-exchanged water, tap water, etc.

[0023] In order to achieve a sufficient warming sensation function, the cosmetic according to the present invention preferably contains a relatively small amount of water. Specifically, the amount of water is preferably 20% by mass or less, and more preferably 0.1 to 10% by mass, based on the total mass of the cosmetic. If the amount is within this range, the cosmetic can fully exert its warming sensation function while providing lightness and good spreadability when applied to the skin.

[0024] In addition, the blending ratio of polyhydric alcohol to water has a large effect on the warming sensation imparting function during use. In other words, the higher the proportion of polyhydric alcohol, the higher the warming sensation imparting effect tends to be. From this viewpoint, the ratio a / e of the blending amount a of polyhydric alcohol to the blending amount e of water is preferably 2 or more, more preferably 4 or more, and particularly preferably 5 or more.

[0025] [Cosmetics] The cosmetic composition according to the present invention is a cosmetic composition containing the above-mentioned essential components, particularly a warming cosmetic composition capable of imparting a warming sensation, and is particularly preferably an oil-in-water cosmetic composition.

[0026] Furthermore, the cosmetic preparation according to the present invention can achieve sufficient emulsion stability with only the above-mentioned essential components. This allows the blending amount of surfactants that may impair the feeling of use to be reduced. Specifically, when the cosmetic preparation according to the present invention contains a surfactant, the blending amount is preferably 1.5 mass% or less, more preferably 1.0 mass% or less, based on the total mass of the cosmetic preparation. And, it is most preferable that the cosmetic preparation according to the present invention does not substantially contain a surfactant. When a small amount of surfactant is blended in the cosmetic preparation according to the present invention, the type of surfactant is not limited, and any conventionally known surfactant, such as a cationic surfactant, anionic surfactant, nonionic surfactant, or amphoteric surfactant, can be used.

[0027] In addition to the above-mentioned essential components, the cosmetic preparation according to the present invention may contain other components that are generally used in compositions for external use such as cosmetics, to the extent that the effects of the present invention are not impaired. For example, a thickener may be blended to give the cosmetic preparation according to the present invention a highly viscous cream-like form and to improve stability.

[0028] The thickener that can be used in the present invention can be selected from any conventionally known thickeners as needed. For example, carboxyvinyl polymers and acrylamide-based thickeners can be used.

[0029] Carboxyvinyl polymers are used as general-purpose thickeners for cosmetics, and are polymers containing acrylic acid as a monomer unit. Such carboxyvinyl polymers are generally commercially available, and any one of them can be selected and used.

[0030] The acrylamide thickener is a water-soluble polymer containing acrylamide as a comonomer. Various types of acrylamide thickeners are known, and among them, a copolymer consisting of a nonionic comonomer and an ionic comonomer is preferred.

[0031] Such an acrylamide-based thickener is selected depending on the purpose, (Dimethylacrylamide / Sodium Acryloyldimethyltaurate) Crosspolymer, Acrylamide / 2-acrylamido-2-methylpropanesulfonic acid copolymer, A mixture of polyacrylamide and sodium polyacrylate, Sodium acrylate / 2-acrylamido-2-methylpropanesulfonic acid copolymer, Polyacrylamide / ammonium acrylate copolymer, and Acrylamide / sodium acrylate copolymer, Among these, (dimethylacrylamide / sodium acryloyldimethyltaurate) crosspolymer or acrylamide / 2-acrylamide-2-methylpropanesulfonic acid copolymer is more preferred, and (dimethylacrylamide / sodium acryloyldimethyltaurate) crosspolymer is particularly preferred.

[0032] In addition, distearyldimonium hectorite, dextrin palmitate, glyceryl (behenic acid / eicosane diacid), polyglyceryl-10 (behenic acid / eicosane diacid), sucrose fatty acid ester, polyamide resin, hydroxystearic acid, etc. can be used as thickeners.

[0033] When a thickener is blended, the blending amount is preferably 0.01 to 1.0% by mass based on the total mass of the cosmetic.

[0034] The cosmetic composition according to the present invention may further contain ingredients depending on the purpose, such as amino acids, bactericides, anti-inflammatory agents, astringents, animal and plant extracts, vitamins and their derivatives, chelating agents, pigments, antioxidants, preservatives, and fragrances.

[0035] The cosmetic according to the present invention can be used in any formulation that a general cosmetic can take. For example, it is possible to select a formulation such as a milky lotion, cream, paste, or ointment. In addition to the product form of a general cosmetic, it is also suitable for use as a makeup cleanser. EXAMPLES

[0036] [Examples 1 to 6, Comparative Examples 1 to 4] Cosmetics of each of the Examples and Comparative Examples were prepared according to the formulations shown in Table 1.

[0037] Furthermore, the performance of these cosmetics was evaluated based on the following criteria with respect to appearance, emulsion stability, emulsion particle size, and warmth.

[0038] [Evaluation method] Cosmetic appearance The appearance of the cosmetic preparation was visually observed and evaluated according to the following criteria. A: It is translucent and uniform. B: Slightly cloudy but uniform. C: White turbidity is observed but uniform. D: Separation is observed.

[0039] Emulsion stability of cosmetics The emulsion stability of the cosmetic preparation was visually observed and evaluated according to the following criteria. A: There is absolutely no oil seepage. B: A small amount of coarse particles are observed, but no oil seepage is observed. C: Oil seepage is observed in the cosmetics. D: Separation is observed. Emulsified particles (μm) The emulsion particles contained in the cosmetic were observed under an optical microscope, and the particle size to which 80% of the particles belonged in multiple observation fields was determined as the particle size of the sample.

[0040] Warmth The warm sensation obtained when the cosmetic preparation was applied to the skin was evaluated according to the following criteria. A: Sufficient warmth is felt. B: A feeling of warmth is felt. C: The feeling of warmth is slightly lacking.

[0041] [Table 1]

[0042] From the above results, it can be seen that in cosmetics containing a high oil content, when no surfactant is used, excellent emulsion stability can be achieved by combining the extract of Sapindus mukorossi peel and glycyrrhizinate. This makes it possible to simultaneously achieve improved usability, high warming effect, and excellent emulsion stability compared to conventional warming cosmetics containing surfactants.

Claims

1. (A) a polyhydric alcohol, (B) glycyrrhizinate, (C) Sapindus mukorossi peel extract, (D) oil, and (E) Water An oil-in-water cosmetic comprising the above-mentioned polyhydric alcohol, wherein the blending amount of the polyhydric alcohol is 30 mass % or more based on the total mass of the cosmetic.

2. The cosmetic according to claim 1 , wherein the blending amount of the polyhydric alcohol is 40% by mass or more based on the total mass of the cosmetic.

3. The cosmetic according to claim 1 or 2, wherein the blending amount of the oil component is 10 mass % or more based on the total mass of the cosmetic.

4. The cosmetic preparation according to any one of claims 1 to 3, wherein the polyhydric alcohol is one or more selected from the group consisting of glycerin, diglycerin, polyglycerin, 1,3-butylene glycol, ethylene glycol, propylene glycol, dipropylene glycol, polyethylene glycol, polypropylene glycol, polyethylene glycol-polypropylene glycol, trimethylolethane, trimethylolpropane, erythritol, pentaerythritol, sorbitan, glucose, sorbitol, maltitol, sucrose, raffinose, hexylene glycol, 1,2-pentanediol, and trehalose.

5. The cosmetic preparation according to any one of claims 1 to 4, wherein the glycyrrhizinate is dipotassium glycyrrhizinate.

6. The cosmetic according to any one of claims 1 to 5, wherein the blending amount of the water is 20 mass % or less based on the total mass of the cosmetic.

7. The cosmetic preparation according to any one of claims 1 to 6, which is substantially free of a surfactant.

8. The cosmetic according to any one of claims 1 to 7, which is a warming cosmetic.

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