JP2019112314A - Oil-in-water type emulsion cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cosmetic that can be applied thickly with good spreadability even though it is a hard cream, gives an appropriate feeling of obstruction with high adhesion to the skin for a long time, and can feel the cream pack feeling until the next morning. Offer. An oil-in-water emulsified cosmetic containing at least the following components (A) to (C). (A) Component: 0.01% by mass to 2.5% by mass of liposomes (B) Component: 3% by mass to 20% by mass of ester oil having a melting point of 40 ° C. or higher (C) Component: Melting point of 20 ° C. or higher 2% by mass to 15% by mass of triglyceride [selection diagram] None

Description

  The present invention relates to an oil-in-water emulsified cosmetic useful as a skin cosmetic.

  One of the problems with the skin is the dryness of the skin. It is said that drying of the skin causes various skin problems such as dry fine wrinkles, swelling of the skin, and reduction of skin firmness, and these skin problems are added to basic daily use cosmetics such as lotions, emulsions and creams. There is a growing demand for pack cosmetics as one of special care. It is known that the pack cosmetic has a high effect of permeating skin care ingredients and moisture into the skin by leaving it applied for a long time and moisturizing and moisturizing dry skin. Among the pack cosmetics, the demand for time-saving cosmetics is also increasing in the busy modern society, and a leave-on type that can be used conveniently without having to wash away the cream or gel pack cosmetics before going to bed. Pack cosmetics are particularly popular.

  Among the leave-on pack cosmetics, the pack cream can be formulated with a large amount of oil, so the emollient effect of the oil effectively traps skin care ingredients and moisture given to the skin, resulting in a high moisturizing effect. Can be granted.

Until now, in the development of a pack cream, there was a problem that the spread at the time of application was bad and it was difficult to spread and it was uncomfortable to feel the stickiness of the cream. Therefore, in Patent Document 1, attempts have been made to improve the elongation at the time of use or to form a polymer film on the skin to reduce stickiness by blending a water-soluble polymer in a cream.
However, although the extension and tackiness of the cream at the time of use are improved, there is a new problem that the polymer-derived film is pinched on the skin, leading to a film feeling that covers the face.

On the other hand, in Patent Document 2, instead of the water-soluble polymer, by blending an α-olefin oligomer which is a liquid oil, the film derived from the polymer is further improved while improving the elongation and stickiness of the cream in use. It has been proposed to eliminate the feeling.
However, as a result of improving the growth of the cream, it has not been possible to realize a thick coating that provides the appropriate closing feeling necessary for the pack cosmetic, so that the user can feel the cream adhering to the skin for a long time I did not feel enough to feel a sense of pack. On the other hand, in order to maintain a sense of tightness for a long time, it is possible to use a high melting point oil to improve the film feeling as a hard cream, but there was a problem that the elongation decreased and the closing feeling became too strong. .

JP, 2011-26261, A Unexamined-Japanese-Patent No. 2010-229081

  The present invention is a hard cream that can be thickly coated with good elasticity, has a high degree of adhesion to the skin, provides a long-lasting sense of closure, and can feel the pack feeling of the cream until the next morning The purpose is to provide

  The present inventors have intensively studied to solve the above problems, and as a result, a hard cream is obtained by oil-in-water emulsification with a specific compounding amount using at least a liposome, a solid or semisolid ester oil at normal temperature and triglyceride. However, it has been found that it is possible to thickly coat well with a high degree of adhesion, to provide a suitable feeling of blockage with high adhesion to the skin for a long time, and to feel the pack feeling of the cream until the next morning. It came to complete.

That is, the present invention is an oil-in-water type emulsified cosmetic containing at least the following components (A) to (C).
Component (A): 0.01% to 2.5% by mass of liposome
Component (B): 3% by mass to 20% by mass of ester oil having a melting point of 40 ° C. or higher
Component (C): 2% by mass to 15% by mass of triglyceride having a melting point of 20 ° C. or higher

  According to the present invention, although it is a hard cream, it is possible to apply a thick coating well with a high degree of adhesion to the skin and give a suitable sense of occlusion for a long time, and can feel the pack feeling of the cream until the next morning. It becomes.

Hereinafter, embodiments of the present invention will be described.
The oil-in-water emulsion cosmetic of the present invention contains at least the following components (A) to (C).
Component (A): 0.01% to 2.5% by mass of liposome
Component (B): 3% by mass to 20% by mass of ester oil having a melting point of 40 ° C. or higher
Component (C): 2% by mass to 15% by mass of triglyceride having a melting point of 20 ° C. or higher
Each component will be described below.

<(A) component>
The component (A) in the present invention is a liposome. Liposome is a closed nano-sized vesicle composed of a bilayer membrane of phospholipid which is a main component of biological membrane, and its attention is paid to its skin penetration function and moisturizing property, and it is used for medicines and cosmetics etc. . As a base material of such liposome, natural or synthetic phosphate or hydrogen such as phosphatidylcholine, phosphatidylethanol, phosphatidylinositol, phosphatidylserine, phosphatidylglycerol, phosphatidic acid, lysophosphatidylcholine, sphingomyelin, egg yolk reticin, soybean lecithin etc. Added phospholipids; cholesterols such as cholesterol and alkyl esters of cholesterol; phytosterols such as phytosterols and alkyl esters of phytosterols; glyceroglycolipids; acyl glucosides such as cetyl galactoside; dialkyls synthetic surfactant; N-acyl-sphingosine Or a sulfate thereof; N-acyl glycosphingolipid; one or two selected from N-higher acyl glutathione It includes mixtures of more. In order to improve skin permeability, moisture retention and stability, liposomes are prepared using amino acid salt, sucrose ester, polyglycerin fatty acid ester, polyhydric alcohol, higher alcohol, higher fatty acid, etc. in combination of one or more kinds. May be

  In the present invention, the liposome which is the component (A) is composed of (i) hydrogenated soybean phospholipid, (ii) cholesterol, and (iii) N-acyl amino acid salt from the viewpoint of enhancing the adhesion of the cream to the skin. It is preferred to use a liposome which is

(I) As the hydrogenated soybean phospholipid, for example, a soybean-derived phospholipid hydrogenated according to a conventional method can be used. The content of phosphatidyl choline of hydrogenated soybean phospholipid is preferably 90% by mass or more, and particularly preferably 95% by mass or more. As such hydrogenated soybean phospholipid, it is preferable to use a commercially available product provided by each company.
In the preparation of the liposome which is the component (A), one type of hydrogenated soybean phospholipid may be used alone, or two or more types may be used in combination.

(Ii) As cholesterol, cholesterol extracted and purified from tissues of higher animals and the like may be used, but it is preferable to use a commercially available product provided by each company.
In the liposome used as the component (A), the amount of (ii) cholesterol is preferably 10 parts by mass to 50 parts by mass, particularly preferably 15 parts by mass to 100 parts by mass of (i) hydrogenated soybean phospholipids. 35 parts by mass.

  (Iii) N-acyl amino acid salt is an N-acyl amino acid salt having an acyl group at the nitrogen atom of amino acid. Examples of such amino acids include aliphatic amino acids such as glycine, sarcosine, alanine and N-methyl-β-alanine; sulfur-containing amino acids such as taurine and methyl taurine; and acidic amino acids such as aspartic acid and glutamic acid. Examples of salts include alkali metal salts such as sodium salts and potassium salts; alkaline earth metal salts such as magnesium salts and calcium salts; ammonium salts; organic amine salts such as diethanolamine salts and triethanolamine salts; lysine salts, arginine Examples thereof include basic amino acid salts such as salts. The acyl group is an acyl group derived from a saturated or unsaturated fatty acid, and the fatty acid may be not only one fatty acid but also a mixed fatty acid composed of a plurality of fatty acids. The carbon number of the acyl group is preferably 6 to 24, particularly preferably 8 to 22, and more preferably 8 to 20.

In preparation of the liposome which is (A) component, N-acyl amino acid salt may be used individually by 1 type, and may use 2 or more types together. In addition, a N-cocoyl sarcosine sodium etc. are illustrated as a preferable N-acyl amino acid salt.
The N-acyl amino acid salt may be produced and used by a production method known per se, but it is preferable to use a commercially available product provided by each company.

  In the liposome used as the component (A), the compounding amount of (iii) N-acyl amino acid salt is preferably 0.1 parts by mass to 5 parts by mass, particularly 100 parts by mass of (i) hydrogenated soybean phospholipid Preferably, it is 0.5 parts by mass to 2 parts by mass.

  Furthermore, as the liposome which is the component (A), from the viewpoint of enhancing the adhesion of the cream to the skin and imparting a pack feeling of the cream until the next morning, (i) hydrogenated soybean phospholipid, (ii) cholesterol, (iii) It is particularly preferred to use a liposome composed of an N-acyl amino acid salt and (iv) 2-methacryloyloxyethyl phosphoryl choline / butyl methacrylate copolymer.

(Iv) As the 2-methacryloyloxyethyl phosphorylcholine-butyl methacrylate copolymer, the molar ratio (MPC / BMA) of 2-methacryloyloxyethyl phosphorylcholine (MPC) to butyl methacrylate (BMA) is 9 / 1-3 / The copolymer which is 7 is used, Preferably, the copolymer whose said molar ratio is 8/2-6/4 is used.
In the preparation of the liposome which is the component (A), one of the above-mentioned copolymers may be used alone, or two or more of the above-mentioned molar ratios may be used in combination.
The copolymer can be produced by a method known per se, purified by a general purification method such as reprecipitation, dialysis, ultrafiltration and the like, and a commercially available product can also be used.

In the present invention, the liposome used as the component (A) is a mixture of the above (i) to (iii), preferably (i) to (iv), static hydration, ultrasonication, French press, General preparation methods such as reverse phase evaporation method, surfactant method, extrusion method, calcium-EDTA chelate method, freeze-thaw method, or treatment with an emulsification machine such as a vacuum emulsification machine, high pressure homomixer, microfluidizer, etc. It can be prepared by the method. In addition, the prepared liposome can have the same particle size by a sizing operation such as filter filtration or gel filtration.
In more detail, the liposome used as (A) component can be prepared, for example by the method described in [Example] of Unexamined-Japanese-Patent No. 2012-184182, for example, "PRIMESOME-MB" (NOF Corporation) Commercial products, such as (made) can also be used.
In addition, the liposome which is (A) component may be used individually by 1 type, and may use 2 or more types together.

  The average particle diameter of the liposome used as (A) component in this invention is 50 nm-500 nm normally, Preferably it is 70 nm-300 nm. The average particle size of the liposome can be determined by measuring dynamic light scattering using, for example, a NICOMP particle size distribution analyzer (MODEL 370A, manufactured by Particle Sizing Systems).

The content of the component (A) in the oil-in-water emulsion cosmetic of the present invention is 0.01% by mass to 2.5% by mass, preferably 0.05% by mass to 1% by mass, particularly preferably It is 0.05 mass%-0.5 mass%.
If the content of the component (A) is too small, the feeling of adhesion of the cream to the skin may be reduced, and the sufficient thick coating and the pack effect of the next morning may be reduced. If the content of the component (A) is too large, stickiness may occur.

<(B) component>
The component (B) used in the present invention is an ester oil having a melting point of 40 ° C. or higher, and is obtained, for example, by dehydration condensation of fatty acids and alcohols. As for melting | fusing point of ester oil, 45 degreeC or more is preferable. The melting point of the ester oil is preferably 80 ° C. or less, particularly preferably 65 ° C. or less.
In addition, the melting point of ester oil can be measured by the 2nd method of the melting point measurement method described in the cosmetics raw material standard (Yakuji Nippo Co., Ltd., published on August 30, 1999).

Specific examples of such ester oils include methyl alacinate, methyl heleicosanoate, methyl behenate, methyl trichosanate, methyl lignocerate, methyl pentacosanoate, methyl cerotenoate, methyl montanate, methyl melicinate, methyl dotriacontanate Fatty acid methyl esters such as methyl tetratriacontarate, methyl hexatriacontarate, methyl octatriacontarate; ethyl alacinate, ethyl henicosanoate, ethyl behenate, ethyl trichosanoate, ethyl lignoserinate, ethyl pentacosanoate, cellotin Fatty acid ethyl ester such as ethyl ethyl, ethyl montanate, ethyl myristate, ethyl dotriacontanate, ethyl tetratriacontanate, ethyl hexatriacontanate, ethyl octatriacontanate Tetradecyl myristate (= myristyl myristate), dodecyl palmitate, tetradecyl palmitate, pentadecyl palmitate, hexadecyl palmitate, octadecyl palmitate, tricontyl palmitate, dodecyl stearate, tetradecyl stearate, pentadecyl stearate Monohydric alcohol esters of fatty acids such as hexadecyl acid, octadecyl stearate, triconcyl stearate, docosyl behenate, tetracosyl lignoceric acid, myricyl myristate; saturated dibasic acids such as methyl succinate, methyl sebacate, dimethyl oxalate Mono- and diesters; ethylene glycol palmitate, ethylene glycol margaric acid, ethylene glycol stearate, Ethylene glycol esters of algal ethylene glycol, ethylene glycol disalicylic acid, ethylene glycol dilaurate, ethylene glycol dimyristate, ethylene glycol dimyristate, ethylene glycol dipalmitate, ethylene glycol dimalgarinate, ethylene glycol distearate; Examples thereof include propylene glycol palmitate, propylene glycol margaric acid, propylene glycol stearate, propylene glycol dibenzoate, propylene glycol disalicylic acid, and propylene glycol esters such as propylene glycol dilaurate. Among them, myristyl myristate is preferably used from the viewpoint of imparting hardness to a cream.
A commercially available product can be used as myristyl myristate. As a commercial item, SR CRODAMOL MM-SO- (JP) (made by Croda Japan KK) etc. are mentioned, for example.
An ester oil may be used individually by 1 type, and may use 2 or more types together.

The content of the component (B) in the oil-in-water emulsion cosmetic of the present invention is 3% by mass to 20% by mass, preferably 5% by mass to 15% by mass, particularly preferably 6% by mass to 8% %.
When the content of the component (B) is too small, the hardness of the cream may not be sufficient, and when the content of the component (B) is too large, the cream may not be uniformly stretched.

<(C) component>
The component (C) used in the present invention is triglyceride having a melting point of 20 ° C. or higher. Specifically, coconut oil, shea butter, cocoa butter, hydrogenated palm oil hydrogenated to palm oil, hydrogenated rapeseed oil, etc. can be exemplified.
One kind of triglyceride may be used alone, or two or more kinds may be used in combination.

The melting point of triglyceride is preferably 25 ° C. or higher. The melting point of triglyceride is preferably 80 ° C. or less, and particularly preferably 65 ° C. or less.
In addition, the melting point of triglyceride can be measured by the 2nd method of the melting point measurement method described in the cosmetics raw material standard (Yakuji Nipponsha Co., Ltd., published on August 30, 1999).

The content of the component (C) in the oil-in-water emulsion cosmetic of the present invention is 2% by mass to 15% by mass, preferably 5% by mass to 15% by mass, particularly preferably 5% by mass to 8% %.
If the content of the component (C) is too small, the hardness of the cream and the thickness at the time of application may not be sufficient, which may lead to a reduction in the feeling of adhesion. When the content of the component (C) is too large, the elongation at the time of application may be poor, and it may be difficult to uniformly spread the cream.

<(D) component>
The oil-in-water emulsion cosmetic of the present invention may contain an alkylene oxide derivative represented by the following formula (I) as the component (D) from the viewpoint of enhancing adhesion to the skin and pack feeling of the next morning. As the component (D), one type may be used alone, or two or more types may be used in combination.
Z- {O (PO) l (EO) m- (BO) nH} a (I)

  Z in Formula (I) is a residue except a hydroxyl group of a compound having 3 to 9 hydroxyl groups. Examples of compounds having 3 to 9 hydroxyl groups include glycerin, trimethylolpropane, erythritol, pentaerythritol, sorbitan, alkyl glycoside, diglycerin, xylitol, dipentaerythritol, sorbitol, inositol, sucrose, trehalose, maltitol Or a mixture of these. Moreover, a in Formula (I) is the number of hydroxyl groups of Z, and a is 3 to 9. Preferably, Z is a residue except a hydroxyl group of a compound having 3 to 6 hydroxyl groups, and 3 ≦ a ≦ 6 is satisfied.

  PO is an oxypropylene group, EO is an oxyethylene group, 1 and m are an average added mole number of PO (propylene oxide) and EO (ethylene oxide), respectively, 1 ≦ l ≦ 50, preferably 2 ≦ l ≦ 20. And 1 ≦ m ≦ 50, preferably 2 ≦ m ≦ 20. The mass ratio of PO to EO (PO / EO) is 1/5 to 5/1, preferably 1/4 to 4/1. PO and EO are randomly added.

  BO represents an oxybutylene group. n is an average added mole number of BO (butylene oxide), and 0.5 ≦ n ≦ 5, preferably 0.8 ≦ n ≦ 3, and particularly preferably 1 ≦ n ≦ 3. BO (butylene oxide) is attached in block form at the end of the alkylene oxide derivative. The compound giving an oxybutylene group is, for example, 1,2-butylene oxide.

The alkylene oxide derivative represented by the formula (I) in the present invention can be produced by a known method. As a commercial item of the alkylene oxide derivative shown by a formula (I), WILBRIDE (trademark) S-753, WILBRIDE (trademark) MG-2070 (made by NOF Corporation) etc. can be used, for example.
In the alkylene oxide derivative represented by the formula (I), WILBRIDE (registered trademark) S-753 is a group in which Z is a hydroxyl group of glycerin having 3 hydroxyl groups, a is 3, 1 is 5, and m is 8 and n are 3, PO and EO are randomly added, and WILBRIDE (registered trademark) MG-2070 is a group other than a hydroxyl group of sucrose in which Z has 4 hydroxyl groups, a is 4 , L is 2, m is 7, PO and EO are randomly added, and n is 1.

When the oil-in-water emulsion cosmetic of the present invention contains the component (D), the content of the component (D) in the oil-in-water emulsion cosmetic is preferably 0.5% by mass to 15% by mass, in particular Preferably it is 1 mass%-10 mass%, More preferably, it is 1 mass%-5 mass%.
If the content of the component (D) is too large, the composition may feel sticky during application, making it difficult to uniformly spread the cream, which may lead to a reduction in the feeling of adhesion.

The oil-in-water emulsion cosmetic of the present invention contains water in addition to the components (A) to (D). Examples of water include purified water, ion exchanged water, distilled water, RO water, tap water, and industrial water.
The upper limit of the water content in the oil-in-water emulsion cosmetic of the present invention is the remaining portion obtained by subtracting the sum of the respective minimum contents of the components (A) to (C) from 100% by mass, and 94.99 mass %. The upper limit of the water content when the oil-in-water emulsion cosmetic of the present invention contains the components (A) to (D) is the minimum content of each of the components (A) to (D). The balance is the remainder obtained by subtracting 100% by mass from the total of and 94.49% by mass. The content of water in the oil-in-water emulsion cosmetic of the present invention is preferably 90% by mass or less, particularly preferably 85% by mass or less. The lower limit of the content of water in the oil-in-water emulsion cosmetic of the present invention is preferably 50% by mass, particularly preferably 60% by mass, and further preferably 70% by mass.

  In the oil-in-water emulsion cosmetic of the present invention, in addition to the above-described components, components generally used in cosmetics and quasi-drugs can be optionally and arbitrarily blended, as long as the effects of the present invention are not impaired. For example, ester oils other than the above component (B), triglycerides other than the above component (C), hydrocarbons excluding ester oils and triglycerides, silicones, oils and fats, waxes, higher alcohols, higher fatty acids, etc .; Surfactants, anionic surfactants, cationic surfactants, various surfactants such as amphoteric surfactants; Lower alcohols, polyhydric alcohols, saccharides, alcohols such as sterols; Clay minerals, water-soluble polysaccharides, etc. Ultraviolet absorbers; anti-inflammatory agents; antioxidants; sequestering agents; film-forming polymer compounds, inorganic pigments, powders, dyes, pigments, dyes, vitamins, amino acids, astringents And other additives such as skin lightening agents, animal and plant extracts, acids and alkalis; water; and the like. One of these components may be used alone, or two or more thereof may be used in combination, as necessary.

Hereinafter, the present invention will be more specifically described by way of examples and comparative examples. The present invention is not limited to the examples.
[Examples and Comparative Examples]
The components (A) to (D) and other components shown in the following table were emulsified to make the total 100% by mass, and each oil-in-water type emulsified cosmetic of Examples and Comparative Examples was prepared. The content of each component in the table is indicated by mass%. The contents of the nine common components described in Tables 1 and 2 are shown in Table 3.

As the raw materials shown in Tables 1 and 2, the following raw materials were used.
In addition, the following average particle diameter and melting | fusing point are a value by said measuring method.
(* 1) Liposome (average particle size: 100 to 300 nm): "PRIMESOME-MB" (manufactured by NOF Corporation) ((i) hydrogenated soybean phospholipid, (ii) cholesterol, (iii) N-coconut oil fatty acid Sarcosine sodium, (iv) 2-methacryloyloxyethyl phosphorylcholine / butyl methacrylate copolymer (molar ratio of 2-methacryloyloxyethyl phosphorylcholine (MPC) to butyl methacrylate (BMA) (MPC / BMA) = 4/1) Liposome dispersion containing about 5.6% by mass of the constituted liposome)
(* 2) Myristyl myristate (melting point 43 ° C): "SUPER REFINED CRODAMOL MM-SO- (JP)" (manufactured by Croda Japan Co., Ltd.)
(* 3) Cetyl palmitate (melting point 48 ° C): "CRODAMOL CP" (manufactured by Croda Japan Ltd.)
(* 4) Hydrogenated palm oil (melting point: 52 ° C): "NIKKOL TRIFAT P-52" (manufactured by Nikko Chemicals Co., Ltd.)
(* 5) Poly (1,2-butanediol) -4PEG / PPG-29 / 9 methyl glucose: "WILBRIDE (registered trademark) MG-2070" (manufactured by NOF Corporation)
(* 6) Vaseline: "White Protopet 1S" (Sonneborn
LLC made)
(* 7) Ethylhexyl palmitate: "Salacos P-8" (manufactured by Nisshin Oillio Co., Ltd.)
(* 8) Olive Fruit Oil: "Olive Oil Refined" (DSP Gokyo Food & Chemical Co., Ltd.)

  About each oil-in-water type emulsification cosmetics of an Example and a comparative example, (1) Hardness of cream, (2) Elongation of cream, (3) Adhesion of cream, (4) Pack feeling of the next morning Evaluation criteria below It evaluated by.

(1) Hardness of cream A cream of iron balls of 1 cm in diameter is gently creamed on the hardness of each oil-in-water emulsion cosmetic contained in a jar container with a panel of 20 women (20's to 40's) The degree of sinking of iron balls after 10 seconds was evaluated by the following evaluation criteria.
<Evaluation criteria>
2 points: Hard (The sinking depth of iron balls is less than 1/4 of the diameter.)
1 point: somewhat hard (the sinking depth of the iron ball is more than 1/4 and less than 1/2 of the diameter)
0 point: Soft (The depth of sinking of iron balls is 1/2 or more of the diameter.)
About the evaluation result, the total score of 20 persons' evaluation points was calculated | required and it determined as follows.
:: The total score is 35 or more ○: The total score is 25 to 34 △: The total score is 15 to 24 ×: The total score is 14 or less

(2) Elongation of cream When using 20 women (20's to 40's) as panelists, each oil-in-water emulsion cosmetic is applied to the face, and the cream's elongation when applied to the entire face is as follows: It was evaluated by the evaluation criteria of.
<Evaluation criteria>
2 points: When the cream is spread well and spread evenly.
1 point: When applying a cream, it does not stretch well, and it can not be spread evenly.
0 point: When the cream is not well spread and can not be spread evenly.
About the evaluation result, the total score of 20 persons' evaluation points was calculated | required and it determined as follows.
:: The total score is 35 or more ○: The total score is 25 to 34 △: The total score is 15 to 24 ×: The total score is 14 or less

(3) Adhesion of cream When a woman of 20 (20's to 40's) is used as a panel, each oil-in-water emulsion cosmetic is applied to the face, and the cream adheres to the entire face. It was made to evaluate by the following evaluation criteria whether there is a feeling of filling.
<Evaluation criteria>
2 points: When there is adhesion to the skin of the applied cream, and you feel a moderate occlusion feeling.
1 point: When there is adhesion of the applied cream to the skin and you feel a slight sense of closure.
0 point: When there is no adhesion to the skin of the applied cream, and you do not feel a moderate occlusion feeling.
About the evaluation result, the total score of 20 persons' evaluation points was calculated | required and it determined as follows.
:: The total score is 35 or more ○: The total score is 25 to 34 △: The total score is 15 to 24 ×: The total score is 14 or less

(4) Pack feeling of the next morning A group of 20 women (20's to 40's) as panelists, apply each oil-in-water emulsion cosmetic to the face before going to bed, and get up the effect of the pack cream when getting up the next morning. It was made to evaluate by the following evaluation criteria about whether it felt.
<Evaluation criteria>
2 points: When the applied cream feels strongly like the pack effect which has permeated the skin over time.
1 point: When the applied cream feels like a pack effect which has permeated the skin over time.
0 point: When you do not feel the pack effect that the applied cream penetrates the skin.
About the evaluation result, the total score of 20 persons' evaluation points was calculated | required and it determined as follows.
:: The total score is 35 or more ○: The total score is 25 to 34 △: The total score is 15 to 24 ×: The total score is 14 or less

As shown in Table 1, each oil-in-water-type emulsified cosmetic of Examples 1 to 8 is a hard cream, can stretch well and can be thickly coated, and has a suitable feeling of blockage with high adhesion to the skin. Give it for a long time, and it was evaluated that it felt a pack feeling of cream until the next morning.
In particular, the oil-in-water type of Example 4 containing 0.1% by mass of the component (A), 7% by mass of the component (B) and 6% by mass of the component (C) and containing 2% by mass of the component (D) The emulsified cosmetic gave very good evaluation in all the evaluation items.

On the other hand, as shown in Table 2, with regard to the oil-in-water emulsified cosmetics of Comparative Examples 1 to 8, those in which sufficient efficacy was recognized in all evaluation items were not found as described below.
The oil-in-water emulsified cosmetics of Comparative Examples 1 and 2 which do not contain the component (A) are evaluated to be low in cream elongation, to decrease the feeling of adhesion to the skin, and not to feel the pack feeling of the next day too much. It was done.

  The oil-in-water emulsified cosmetics of Comparative Examples 3 to 5 which do not contain the component (B) were evaluated to be insufficient in hardness and low in cream elongation and adhesion. In Comparative Example 5 in which ethylhexyl palmitate as a liquid ester oil was substituted, it was evaluated that the elongation of the cream was improved compared to Comparative Example 3, but the hardness of the cream and an appropriate feeling of blockage as in close contact with the skin , It was evaluated that the pack feeling of the next morning was not obtained enough. In addition, in Comparative Example 4 in which hydrocarbon solid oil, petrolatum, was substituted, it was evaluated that an appropriate feeling of blockage in close contact with the skin was felt as compared with Comparative Example 3. Evaluation was inadequate.

  The oil-in-water emulsified cosmetics of Comparative Examples 6 to 8 which do not contain the component (C) were evaluated as having low hardness and elongation of the cream and particularly low adhesion. In Comparative Example 8 in which olive fruit oil, which is liquid triglyceride, was substituted, it was evaluated that the elongation of the cream was improved compared to Comparative Example 6, but the hardness of the cream and an appropriate feeling of blockage as in close contact with the skin. It was evaluated that the pack feeling of the next morning could not be obtained sufficiently. Further, in Comparative Example 7 in which the solid hydrocarbon oil, petrolatum, was substituted, it was evaluated that an appropriate feeling of blockage in close contact with the skin was felt as compared to Comparative Example 6, but Evaluation was inadequate.

As described above in detail, according to the present invention, it is possible to thick coat well with a hard cream, and provide a suitable feeling of blockage with high adhesion to the skin for a long time, and pack the cream until the next morning It is possible to provide an oil-in-water emulsified cosmetic that can feel a sense.
The oil-in-water emulsified cosmetic of the present invention can be suitably used as a skin cosmetic such as a leave-on type pack cosmetic.

Claims (4)

An oil-in-water emulsion cosmetic comprising at least the following components (A) to (C).
Component (A): 0.01% to 2.5% by mass of liposome
Component (B): 3% by mass to 20% by mass of ester oil having a melting point of 40 ° C. or higher
Component (C): 2% by mass to 15% by mass of triglyceride having a melting point of 20 ° C. or higher The oil-in-water type emulsion cosmetic according to claim 1, further comprising 0.5% by mass to 15% by mass of the (D) component: an alkylene oxide derivative represented by the following formula (I).
Z- {O (PO) l (EO) m- (BO) nH} a (I)
(Wherein Z is a residue other than a hydroxyl group of a compound having 3 to 9 hydroxyl groups, a is 3 to 9, PO is an oxypropylene group, EO is an oxyethylene group, l and m are each an oxypropylene group 1 ≦ l ≦ 50, 1 ≦ m ≦ 50, and the mass ratio of PO to EO (PO / EO) is 1/5 to 5/1, and the average addition mole number of the oxyethylene group is 1/5 to 5/1, EO is added randomly, BO is an oxybutylene group, n is an average added mole number thereof, and 0.5 ≦ n ≦ 5).   The oil-in-water emulsified cosmetic according to claim 1 or 2, wherein the component (A) is a liposome consisting of (i) hydrogenated soybean phospholipid, (ii) cholesterol, (iii) N-acyl amino acid salt.   The component (A) is (i) hydrogenated soybean phospholipid, (ii) cholesterol, (iii) N-acyl amino acid salt, and (iv) 2-methacryloyloxyethyl phosphorylcholine-butyl methacrylate copolymer, 4. A liposome comprising a copolymer having a molar ratio (MPC / BMA) of 2-methacryloyloxyethyl phosphorylcholine (MPC) and butyl methacrylate (BMA) of 9/1 to 3/7. The oil-in-water emulsion cosmetic according to any one of the above.