Skin cosmetics

Abstract

To provide skin cosmetics that offer a thick and moisturizing sensation during application, while being non-sticky.SOLUTION: Skin cosmetics contain (A) at least one selected from carboxyvinyl polymer or xanthan gum, (B) ethanol, (C) trimethylglycine, and (D) at least one selected from Aloe vera extract or bilberry extract.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to a skin cosmetic. More specifically, it relates to a skin cosmetic that has a warming sensation and a moisturizing feeling during application and is not sticky.

Background Art

[0002] There are various dosage forms for skin cosmetics, such as lotions, milks, creams, oils, etc. In the dosage form of a commonly used lotion, if it has no viscosity, it is likely to spill from the hand, and the moisturizing effect is also difficult to sustain. To solve the above problems, there is a lotion that has an appropriate viscosity with a thickener or the like and has a warming sensation during application. However, currently, when applied to the skin, it is likely to feel sticky.

[0003] In Patent Document 1, an oil-in-water type emulsified cosmetic that has a high moisturizing effect and little stickiness is disclosed by combining a water-soluble moisturizer, a liquid oil, an acrylic acid-based water-soluble polymer, a gum-based water-soluble polymer, and an emulsifier.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, although the oil-in-water type emulsified cosmetic of Patent Document 1 satisfies the moisturizing effect, there is still room for improvement in terms of having a warming sensation during application and not being sticky.

[0006] Therefore, an object of the present invention is to provide a skin cosmetic that has a warming sensation and a moisturizing feeling during application and is not sticky.

Means for Solving the Problems

[0007] In view of these circumstances, the inventors conducted diligent research and, as a result, discovered a skin cosmetic that is thick when applied and does not leave a moisturizing or sticky feeling after application, by containing (A) one or more selected from carboxyvinyl polymer or xanthan gum, (B) ethanol, (C) trimethylglycine, and (D) one or more selected from aloe vera extract or bilberry extract, thus completing the present invention. [Effects of the Invention]

[0008] The present invention provides a skin cosmetic that provides warmth and moisturizing sensation upon application, without being sticky. [Modes for carrying out the invention]

[0009] The present invention will be described in detail below. Unless otherwise specified, all units indicating content are in mass percent.

[0010] The present invention relates to a skin cosmetic containing (A) one or more selected from carboxyvinyl polymer or xanthan gum, (B) ethanol, (C) trimethylglycine, and (D) one or more selected from aloe vera extract or bilberry extract.

[0011] The present invention contains (A) one or more selected from carboxyvinyl polymer or xanthan gum, from the viewpoint of thickness when applied.

[0012] Examples of commercially available carboxyvinyl polymers used in the present invention include CARBOPOL ULTREZ 10 POLYMER (manufactured by Lubrizol Nippon Co., Ltd.) and Carbopol 980 (manufactured by Lubrizol Nippon Co., Ltd.).

[0013] Examples of commercially available xanthan gums used in this invention include Echo Gum (CP Kelco US, Inc.) and Labor Gum GS-C (manufactured by Sumitomo Pharma Food & Chemical Co., Ltd.).

[0014] The content of component (A) used in the present invention is preferably 0.03 to 0.6%, more preferably 0.05 to 0.5%, and even more preferably 0.1 to 0.4%. If the content of component (A) is less than 0.03%, there is a risk that the warmth will not be felt when applied. If the content of component (A) exceeds 0.6%, there is a risk that stickiness will be felt.

[0015] In the present invention, component (A) is preferably used in combination with a carboxyvinyl polymer and xanthan gum from the viewpoint of improving the thickness when applied.

[0016] This invention contains (B) ethanol from the viewpoint of being non-sticky.

[0017] The content of component (B) used in the present invention is preferably 1 to 12%, more preferably 3 to 10%, and even more preferably 4 to 8%. If the content of component (B) is less than 1%, a sticky feeling may be felt. If the content of component (B) exceeds 12%, a moisturizing effect may not be obtained.

[0018] This invention contains (C) trimethylglycine from the viewpoint of moisturizing properties.

[0019] The content of component (C) used in the present invention is preferably 0.3 to 3%, more preferably 0.5 to 2%, and even more preferably 0.8 to 1.5%. If the content of component (C) is less than 0.3%, there is a risk that a moisturizing sensation will not be obtained when applied. If the content of component (C) exceeds 3%, there is a risk of feeling sticky.

[0020] The present invention contains one or more selected from (D) aloe vera extract or bilberry extract from the viewpoint of moisturizing properties.

[0021] The aloe vera used in the present invention is a succulent plant belonging to the family Asphodelaceae. The constituent parts of the aloe vera extract that can be used include, for example, the leaf part, the flower part, etc., but preferably the leaf part. Also, the extraction, pressing, and distillation methods are not particularly limited. For example, it may be obtained by heating extraction or by normal temperature extraction. Furthermore, the plant may be extracted as it is, or it may be extracted after drying. As the pressing method, it may be a fatty oil obtained by hand squeezing, hydraulic pressing, or pressurized pressing. Also, it may be the aqueous phase obtained by steam distillation.

[0022] The aloe vera extract used in the present invention is obtained by extracting or dissolving a powder obtained from the sap of the leaf part of aloe vera Aloe vera (L.) Burm.f. (Aloe barbadensis Mill.) (Liliaceae), aloe arborescens Mill. (Liliaceae), or its variants in one selected from water, ethanol, propylene glycol, 1,3-butylene glycol, or a mixture thereof.

[0023] Examples of commercially available products of the aloe vera extract used in the present invention include Wasmi<Okinawa Aloe Vera> (manufactured by Maruzen Pharmaceutical Co., Ltd.).

[0024] The bilberry used in the present invention is a plant of the genus Vaccinium belonging to the family Ericaceae: bilberry (Vaccinium myrtillus L.). The constituent parts of the bilberry extract that can be used include, for example, the leaf part, the bud part, the fruit, the seed part, etc., but preferably the leaf part. Also, the extraction, pressing, and distillation methods are not particularly limited. For example, it may be obtained by heating extraction or by normal temperature extraction. Furthermore, the plant may be extracted as it is, or it may be extracted after drying. As the pressing method, it may be a fatty oil obtained by hand squeezing, hydraulic pressing, or pressurized pressing. Also, it may be the aqueous phase obtained by steam distillation.

[0025] The bilberry extract used in the present invention is obtained by washing the leaves of Vaccinium myrtillus L. (Ericaceae), adding an ethanol solution thereto for extraction, and filtering the resulting solution.

[0026] Examples of commercially available bilberry extracts used in the present invention include EcoFarm Bilberry Leaf E (manufactured by Ichimaru Pharcos Co., Ltd.).

[0027] The content of the solid residue of the component (D) used in the present invention is preferably 0.000002 to 0.1%, more preferably 0.00001 to 0.01%, and even more preferably 0.00005 to 0.005%. If the content of the solid residue of the component (D) is less than 0.000002%, it may not be possible to obtain a moisturizing feeling. If the content of the solid residue of the component (D) exceeds 0.1%, there may be a feeling of stickiness.

[0028] From the viewpoint of improving the moisturizing feeling, it is preferable to use the component (D) in the present invention in combination with aloe vera extract and bilberry extract.

[0029] In the composition of the present invention, within the range that does not impair the effects of the present invention, in addition to the above components, as components usually used in cosmetics, thickeners other than the component (A), alcohols other than the component (B), plant extracts other than the component (D), surfactants, silicone oils, oily components other than silicone oils, pH adjusters, sequestering agents, ultraviolet absorbers, fragrances, antioxidants, preservatives, cooling agents, vitamins, protein hydrolysates, colorants, etc. can be contained, and these may be contained in one or more kinds.

[0030] The viscosity of the skin cosmetic in the present invention under the condition of 20°C is not particularly limited, but is preferably 1,000 to 5,000 mPa·s, and more preferably 1,500 to 4,500 mPa·s.

[0031] The viscosity of the skin cosmetic composition in this invention at 20°C was measured by filling a sample bottle (Food 140: manufactured by Daiichi Glass Co., Ltd.) with 130 mL of the skin cosmetic composition prepared by a conventional method, regulating the temperature at 20°C for 24 hours, and then rotating it for 1 minute at 12 rpm using a Type B viscometer (Model: Digital Viscometer TVB-10M, manufactured by Toki Sangyo Co., Ltd.) with an M3 rotor.

[0032] The pH of the skin cosmetic composition in the present invention at 20°C is not particularly limited, but is preferably 5.0 to 6.5, and more preferably 5.5 to 6.2.

[0033] The pH of the skin cosmetic composition in this invention at 20°C was measured using a glass electrode type hydrogen ion concentration indicator (F-71, manufactured by Horiba, Ltd.) after the skin cosmetic composition, prepared by a conventional method, was allowed to stand at 20°C for one day to regulate the temperature.

[0034] The dosage form of the skin cosmetic in the present invention is not particularly limited, but examples include gel-like, emulsion-like, cream-like, etc., and various cosmetic products such as lotions, toners, masks, and serums are included.

[0035] The container for the skin cosmetic in this invention is not particularly limited, but examples include bottle containers, pouch containers, tube containers, jar containers, impregnated sheets, and the like.

[0036] Methods of using the skin cosmetic in this invention include dispensing it into the palm of the hand by tilting the pump or container, or applying it directly using an impregnated sheet. [Examples]

[0037] The present invention will be described in more detail below with reference to examples, but these examples are not intended to limit the present invention in any way.

[0038] In the evaluation tests described herein, the ingredients and their contents in the skin cosmetics were varied and tested. All units indicating the content of each ingredient are in mass%, and these were prepared by conventional methods.

[0039] In the evaluation tests described herein, "thickness upon application," "moisturizing effect," and "non-stickiness" were evaluated using the following methods.

[0040] "Thickness when applied" Twenty panelists evaluated the thickness of the skin cosmetics obtained in the examples and comparative examples by applying 0.2g of the skin cosmetic, which had been warmed to 20°C, to their inner arm under conditions of 20°C and 50% humidity, and then spreading it over a 3cm square area with their hands. (Evaluation Criteria) ◎: Very good. More than 15 people rated it as having a thick consistency when applied. ○: Good. 10 to 14 people rated the product as having a thick consistency when applied. △: Average - 5 to 9 people rated the product as having a thick consistency when applied. ×: Poor. Four or fewer people rated the product as being too thick when applied.

[0041] "Moisturizing feeling" Twenty panelists applied 0.2g of the skin cosmetic obtained in the examples and comparative examples to their inner arm under conditions of 20°C and 50% humidity. After spreading it over a 3cm square area with their hands, they evaluated the moisturizing sensation after application by sensory evaluation. (Evaluation Criteria) ◎: Very good. More than 15 people rated it as moisturizing. ○: Good. 10 to 14 people rated it as providing a moisturizing effect. △: Average. 5 to 9 people rated it as providing a moisturizing effect. ×: Poor. Four or fewer people rated it as moisturizing.

[0042] "Non-sticky" Twenty panelists evaluated the skin cosmetics obtained in the examples and comparative examples by applying 0.2g of the skin cosmetic, which had been warmed to 20°C, to their inner arm under conditions of 20°C and 50% humidity. After spreading it over a 3cm square area with their hands, they assessed the lack of stickiness after application by sensory evaluation. (Evaluation Criteria) ◎: Very good. More than 15 people rated it as not sticky. ○: Good. 10 to 14 people rated it as not sticky. △: Average. 5 to 9 people rated it as not sticky. ×: Bad. Four or fewer people rated it as not sticky.

[0043] [Table 1]

[0044] [Table 2]

[0045] [Table 3]

[0046] [Table 4]

[0047] Examples 1 to 29, shown in Tables 1 to 4, confirmed that good results were obtained regarding "thickness upon application," "moisturizing effect," and "non-stickiness."

[0048] When Example 30 was prepared and various tests were conducted, it was confirmed that good results were obtained regarding "thickness upon application," "moisturizing effect," and "non-stickiness."

[0049] Example 30 <Toner> Component Content (mass%) (A) Carboxyvinyl polymer 0.140 (A) Xanthan gum 0.100 (B) Ethanol 4.700 (C) Trimethylglycine 1.000 (D) Aloe vera extract (solid residue) *1 0.001 (D) Bilberry extract (solid residue) *2 0.001 Concentrated glycerin 3,000 1,3-Butylene glycol 2.000 L-arginine 0.125 Bergamot fruit oil 0.001 Rosemary oil 0.001 Peppermint extract 0.010 Chamomile extract 0.010 Rosemary extract 0.010 Phenoxyethanol 0.300 Methyl parahydroxybenzoate 0.150 Disodium edetate 0.010 Polyoxyethylene (60) hydrogenated castor oil 0.500 Fragrance 0.200 Purified water 87.741 Total 100,000 Viscosity (20℃): 3,800mPa·s pH (20℃): 6.08

[0050] The product names of the raw materials described in the examples are as follows: *1 Waism <Okinawa Aloe Vera> (manufactured by Maruzen Pharmaceutical Co., Ltd.) *2 Eco Farm Bilberry Leaf E (manufactured by Ichimaru Falcos Co., Ltd.) [Industrial applicability]

[0051] The present invention provides a skin cosmetic that is warm and moisturizing when applied, but without stickiness.

Claims

[Claim 1] (A) Carboxyvinyl polymer and xanthan gum (B) Ethanol (C) Trimethylglycine (D) Aloe vera extract and bilberry extract A skin cosmetic comprising the following, wherein the content of component (A) is 0.1 to 0.4% by mass, the content of component (B) is 4 to 8% by mass, the content of component (C) is 0.8 to 1.5% by mass, and the content of the solid residue of component (D) is 0.00005 to 0.005% by mass.

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