JP2014234380A - Oil-in-water type emulsion cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an oil-in-water type emulsion cosmetic which is excellent in a thick feeling at the time of application and sustainability of moisture retention effect, has good compatibility to skin and no stickiness, and does not exert adverse effect to the finishing and sustainability of makeup.SOLUTION: An oil-in-water type emulsion cosmetic comprises: (A) 0.1 to 5 wt.% of one or more kinds selected from the group consisting of monoalkyl glyceryl ether and monoalkenyl glyceryl ether; (B) 1 to 20 wt.% of ester of dimer acid; and (C) 0.1 to 8 wt.% of a nonionic surfactant.

Description

  The present invention relates to an oil-in-water emulsified cosmetic.

  When the barrier function and water retention function of the stratum corneum are reduced by various internal factors or external factors, various skin troubles such as promoting the occurrence of rough skin and wrinkles are caused. For such skin problems, it is well known that emulsified cosmetics are used, have a rich and smooth feeling of use, and have an effect of improving rough skin. Many oil-in-water emulsion compositions are used.

  The fats and oils contained in the oil-in-water emulsion composition are expected to impart flexibility, lubricity, moderate glossiness, non-stickiness, richness, barrier function, etc., and contain various fats and oils Proposed emulsified cosmetics have been proposed. Among them, in recent years, it has been reported that monoalkyl glyceryl ether, dimer acid and dimer diol derivatives function as effective moisturizers because of their moisturizing power and their durability, stability, and safety. Produced emulsions and creams have been proposed.

However, few of these oil-in-water emulsion compositions are satisfactory in terms of water resistance, and there is a problem that if used before makeup, makeup loss tends to occur.
The eyes and mouth, which are worried about dryness and fine lines, are especially prone to makeup slipping, and the use of an oil-in-water emulsion composition for the care of these areas is recommended after removing makeup, i.e. at night or at bedtime. It was limited before. Also, in terms of feeling of use, those that have a rich and moisturizing effect at the time of application have strong stickiness, poor feeling of use, and makeup brushes and puffs are hindered and makeup operations are hindered, making the makeup finish uneven. May have occurred. On the other hand, when stickiness is suppressed, there are cases in which makeup and moisturizing effect at the time of application are insufficient, or the familiarity to the skin is slow and makeup cannot be performed immediately after application.

  For example, in Patent Document 1, an alkyl glyceryl ether-containing composition in which alkyl glyceryl ether, lecithin, a nonionic surfactant and a polyhydric alcohol are mixed at a specific ratio, and a cosmetic and a skin external preparation using the same are presented. ing. However, depending on the amount and blending ratio of such ingredients as alkyl glyceryl ether, such cosmetics and external preparations for skin may have insufficient body at the time of application, may feel sticky, or may cause makeup slippage. It was.

  In Patent Document 2, a cosmetic and an external preparation containing an oil agent containing an ester of a dimer diol and a monocarboxylic acid having 4 to 34 carbon atoms or a dicarboxylic acid is used. A cosmetic and an external preparation characterized by containing a dimer acid ester obtained by esterification with a sterol are disclosed. However, in any of the compositions, makeup slippage is likely to occur in the eyes and mouth, and stickiness is caused to impair the feeling of use, and the makeup operation is hindered, resulting in unevenness in the makeup finish.

  Patent Document 4 discloses an oil-in-water emulsified cosmetic containing a compound obtained by esterifying carboxyl groups at both ends of an oligomer ester of phospholipid, dimer acid and dimer diol with isostearyl alcohol. However, even in this composition, there is a problem that makeup slipping easily occurs in the eyes and mouth, and the richness at the time of application is insufficient. There may be unevenness. In addition, it has a fresh feel, but it is slow to adjust to the skin, and sometimes makeup cannot be performed immediately after application.

  Under such circumstances, the oil-in-water emulsified cosmetics have excellent body and moisture retention effects when applied, have good skin fit, are not sticky, and do not adversely affect the finish and sustainability of makeup. Has been longing for.

JP 2010-59066 A JP 2001-72530 A JP 2001-199937 A JP 2007-269722 A

  Therefore, the object of the present invention is an oil-in-water oil that is excellent in the sustainability of the richness and moisturizing effect at the time of application, has good familiarity with the skin, does not have stickiness, and does not adversely affect the finish and sustainability of the makeup. It is to provide a type emulsified cosmetic.

  As a result of intensive studies to solve the above problems, the present inventors have found that (A) a monoalkyl or monoalkenyl glyceryl ether, (B) an ester of dimer acid, and (C) a nonionic surfactant having a specific weight. It has been found that the oil-in-water emulsified cosmetic composition is contained in a ratio so that it is excellent in both the richness at the time of application, the moisturizing effect and the familiarity to the skin, and the good feeling without stickiness. It came to be completed.

  That is, the present invention provides (A) 0.1% to 5% by weight of one or more selected from the group consisting of monoalkyl glyceryl ether and monoalkenyl glyceryl ether, and (B) an ester of dimer acid. The present invention relates to an oil-in-water emulsified cosmetic containing 1% by weight to 20% by weight and (C) 0.1% by weight to 8% by weight of a nonionic surfactant.

  According to the present invention, the richness and durability of the moisturizing effect at the time of application are excellent, the familiarity to the skin is good, and there is no stickiness, and the makeup finish and durability, especially the makeup of the eyes and mouth. An oil-in-water emulsified cosmetic that does not have an adverse effect can be obtained.

  The oil-in-water emulsion cosmetic of the present invention comprises (A) 0.1% to 5% by weight of one or more selected from the group consisting of monoalkyl glyceryl ether and monoalkenyl glyceryl ether, (B) 1% to 20% by weight of an ester of dimer acid and (C) 0.1% to 8% by weight of a nonionic surfactant.

  In the oil-in-water emulsified cosmetic of the present invention, the monoalkyl glyceryl ether or monoalkenyl glyceryl ether contained as the component (A) is a compound in which the hydroxyl group at the 1-position in glycerin is etherified with an alkyl group or an alkenyl group. is there. For the purpose of the present invention, those having a linear or branched alkyl group or alkenyl group having 8 to 24 carbon atoms are preferred, and in particular, the number of carbon atoms in terms of imparting a rich and non-sticky feeling during coating. Those having 16 to 22 linear alkyl groups or alkenyl groups are more preferred. Specific examples include monocetyl glyceryl ether, monostearyl glyceryl ether, monoisostearyl glyceryl ether, monooleyl glyceryl ether, monobehenyl glyceryl ether, etc., among which monocetyl glyceryl ether, monostearyl glyceryl ether or monooleyl glyceryl ether Is particularly preferred. In the oil-in-water emulsified cosmetic of the present invention, one or more of these can be selected and used. In the present invention, as the component (A), monoalkyl glyceryl ether or monoalkyl produced by a mixture of two or more kinds of glycerin and a linear or branched saturated or unsaturated aliphatic alcohol having 8 to 24 carbon atoms. Mixtures of alkenyl glyceryl ethers can also be used.

  In the oil-in-water emulsified cosmetic of the present invention, the monoalkyl glyceryl ether or monoalkenyl glyceryl ether contained as the component (A) can be industrially synthesized by various known methods. A commercially available product can also be used. Preferable commercially available products include “NIKKOL batyl alcohol 100”, “NIKKOL batyl alcohol EX”, “NIKKOL kimyl alcohol 100”, “NIKKOL serakill alcohol” (all manufactured by Nikko Chemicals Co., Ltd.) and the like.

  One or more selected from the group consisting of the monoalkyl glyceryl ether and monoalkenyl glyceryl ether as component (A) is 0.1% by weight to 5% in the total amount of the oil-in-water emulsion cosmetic of the present invention. It is contained by weight, preferably 0.1 to 3% by weight, more preferably 0.5 to 1.5% by weight. When the content of the component (A) is less than 0.1% by weight, the richness at the time of application, the persistence of the moisturizing effect or the familiarity with the skin is reduced, and the familiarity with the makeup cosmetics is also reduced. It tends to cause breakage. On the other hand, when the content of the component (A) exceeds 5% by weight, it feels sticky and the finish of the makeup deteriorates.

  In the oil-in-water emulsified cosmetic of the present invention, the ester of dimer acid contained as component (B) is an ester composed of dimer acid and alcohol. Dimer acid is a known dibasic acid obtained by an intermolecular polymerization reaction of an unsaturated fatty acid, and industrially, generally, an unsaturated fatty acid having 11 to 22 carbon atoms or a lower alcohol ester thereof is obtained with a clay catalyst or the like. By dimerization, it is obtained as dimer acid and / or its lower alcohol ester. The dimer acid obtained industrially is mainly composed of a dibasic acid having about 36 carbon atoms, but contains a small amount of trimer acid or monomer acid depending on the degree of purification. Generally, "dimer acid" has a dimer acid content exceeding 70% by weight and a dimer acid content increased to 90% by weight or more by molecular distillation. For the purpose of the present invention, those having a dimer acid content exceeding 70% by weight are used, but those having a dimer acid content of 90% by weight or more are preferably used. Further, although a double bond remains after the dimerization reaction, a dimer acid that is further hydrogenated to improve oxidation stability, that is, a hydrogenated dimer acid, has also been produced. In the present invention, any dimer acid can be used, but hydrogenated dimer acid is more preferable from the viewpoint of oxidation stability.

  For the purpose of the present invention, the dimer acid constituting the dimer acid ester contained as the component (B) is preferably a dimer acid having a carbon number of about 36 as a main component. It is more preferable to use dimer linoleic acid in terms of the moisturizing effect, oxidation stability, and water retention.

In the oil-in-water emulsified cosmetic of the present invention, the dimer acid ester used as the component (B) is composed of the dimer acid and the alcohol. Esters of dimer acid include esters of dimer acid and monovalent, divalent, or trivalent or higher alcohols, and esterified products of dimer acid and hydroxycarboxylic acid or esters thereof, dimer acid and other carboxylic acids. And an esterified product of an alcohol and an alcohol. Further, it may be an esterified product of dimer acid and a mixture of two or more alcohols.
For the purpose of the present invention, the ester of dimer acid is preferably an ester of dimer acid and a monovalent or divalent alcohol.

Among the alcohols constituting the dimer acid ester, the monohydric alcohol includes a saturated or unsaturated linear or branched monohydric alcohol and a ring-containing or cyclic monohydric alcohol.
Considering the influence on the feeling of use of the oil-in-water emulsified cosmetic, etc., the saturated or unsaturated linear or branched monohydric alcohol constituting the dimer acid ester is preferably one having 12 to 34 carbon atoms. As the ring-containing or cyclic monohydric alcohol, sterols are preferable.

  Specific examples of the saturated linear monohydric alcohol having 12 to 34 carbon atoms include dodecanol, tridecanol, tetradecanol, pentadecanol, hexadecanol, heptadecanol, octadecanol, nonadecanol, icosanol, docosanol, Straight chain alkanols such as tricosanol and tetracosanol; natural fatty acid reduced alcohols mainly containing saturated straight-chain monohydric alcohols having 12 to 34 carbon atoms such as hydrogenated coconut oil alcohol and hydrogenated rapeseed alcohol; hydrogenated jojoba alcohol And natural wax-derived alcohol containing a saturated straight-chain monohydric alcohol having 12 to 34 carbon atoms such as carnauba alcohol as a main component.

  Examples of the saturated branched monohydric alcohol having 12 to 34 carbon atoms include isododecanol, 2-butyloctanol, isotridecanol, isotetradecanol, isopentadecanol, 2-pentadecanol, isohexadecanol, 2-hexadecanol, 2-hexyldecanol, isoheptadecanol, 2-heptadecanol, isostearyl alcohol, 2-octadecanol, isonononadecanol, isoeicosanol, 2-icosanol, 2-octyldodecanol Branched alkanols such as isoheneicosanol, 18-methylicosanol, isododecanol, 2-dodecanol, 2-decyltetradecanol, 2-dodecylhexadecanol, 2-tetradecyloctadecanol; from lanolin The resulting long-chain branched alkanol (charcoal Number = 12 to 31), and the like.

  Examples of unsaturated linear or branched monohydric alcohols having 12 to 34 carbon atoms include palmitoleyl alcohol ((Z) -9-hexadecene-1-ol) and oleyl alcohol ((Z) -9-octadecene-1-ol). ), Elaidyl alcohol ((E) -9-octadecene-1-ol), linear alcohols such as linoleyl alcohol ((9Z, 12Z) -octadeca-9,12-dien-1-ol); isooleyl alcohol And branched alkenols.

  Examples of sterols include phytosterols such as sitosterol, campesterol, stigmasterol, and brassicasterol; hydrogenated phytosterols obtained by hydrogenating the phytosterols; cholesterol, dihydrocholesterol, desmosterol, latosterol, lanosterol, dihydrolanosterol, agnosterol, etc. Animal-derived sterols; sterol-derived sterols such as ergosterol.

Among the alcohols constituting the esters of dimer acids, the dihydric alcohols include saturated or unsaturated linear or branched dihydric alcohols, condensates thereof, ring-containing or cyclic dihydric alcohols, and dimer diols. .
Considering the effect on the feeling of use of the oil-in-water emulsified cosmetic, the dihydric alcohol constituting the dimer acid ester is a saturated or unsaturated linear dihydric alcohol having 12 to 44 carbon atoms, cyclohexane. The dihydric alcohol containing and dimer diol are preferable.

  Examples of the saturated linear dihydric alcohol having 12 to 44 carbon atoms include linear alkanediols such as 1,2-dodecanediol, 1,2-hexadecanediol, 1,2-octadecanediol, and 1,20-icosanediol. Is mentioned.

  Examples of the unsaturated straight chain dihydric alcohol having 12 to 44 carbon atoms include straight chain alkene diols such as 9-octadecene-1,12-diol.

  Examples of the dihydric alcohol containing cyclohexane include 1,4-cyclohexanediol and 1,2-cyclohexanedimethanol.

  Examples of the dimer diol include dimer diol obtained by reducing the dimer acid described above. An object of the present invention is a dimer diol obtained by reducing dimer acid obtained by dimerizing an unsaturated fatty acid having 11 to 22 carbon atoms with a clay catalyst, and having a dimer diol content of about 70 wt. More than 90% by weight can be used, but those having a dimer diol content exceeding about 90% by weight are preferably used.

For the purpose of the present invention, the alcohol constituting the ester of dimer acid is more preferably a monovalent or divalent alcohol having 14 or more carbon atoms. In addition, saturated linear alcohols having about 16 to 22 carbon atoms such as hexadecanol, octadecanol, docosanol, etc. from the viewpoint of viscoelasticity, stability of the ester to be produced, richness at the time of application, no stickiness, etc .; Saturated branched alcohols having about 16 to 20 carbon atoms such as 2-hexyldecanol, 2-octyldodecanol and isostearyl alcohol; sterols such as phytosterol and cholesterol; and dimer diols such as dimer linoleyl alcohol are particularly preferably used. Can do.
In the oil-in-water emulsified cosmetic of the present invention, an ester of dimer acid and a mixture of two or more of the above monovalent or divalent alcohols can also be preferably used as the component (B).

  In the oil-in-water emulsified cosmetic of the present invention, as the ester of the dimer acid contained as the component (B), specifically, dimer dilinoleate phytosteryl / isostearyl / cetyl / stearyl / behenyl (dimer dilinoleic acid and , Phytosterol, isostearyl alcohol, hexadecanol (cetanol), ester with a mixture of stearyl alcohol and docosanol (behenyl alcohol)), dimer dilinoleate dimer dilinoleyl, dimer dilinoleate diisostearyl, dimer dilinoleate di (Isostearyl / phytosteryl) (diester of dimer linoleic acid and a mixture of isostearyl alcohol and phytosterol) can be exemplified. Among them, dimer linoleate phytosteryl / isostearyl / cetyl / stearyl / behenyl and dimer dilinoleate di (isostearyl / phytosteryl) are preferable in terms of richness and non-stickiness during application.

In the oil-in-water emulsified cosmetic of the present invention, one or more of the above dimer acid esters can be selected and used.
The ester of the dimer acid can be industrially produced by various known methods, but commercially available products can also be used. Preferable commercially available products include “LUSPLAN DD-DA5” and “LUSPLAN DD-DA7” (Dimer dilinoleic acid) and “LUSPLAN PI-DA” (dimer dilinoleic acid di (isomeric) Stearyl / phytosteryl)), “Plandool-H” and “Plandool-S” (phytosteryl dimer dilinoleate / isostearyl / cetyl / stearyl / behenyl) and the like.

  The dimer acid ester as component (B) is contained in the total amount of the oil-in-water emulsified cosmetic of the present invention in an amount of 1 to 20% by weight, preferably 3 to 18% by weight, more preferably 5% by weight. It is contained in 15% by weight. If the content of the component (B) is less than 1% by weight, the rich and moisturizing effect at the time of application cannot be obtained, and the familiarity with the makeup cosmetics is poor and the adhesion to the skin is insufficient. Makes up makeup easily. On the other hand, when the content of the component (B) exceeds 20% by weight, the finish of the makeup deteriorates with stickiness.

  In the oil-in-water emulsified cosmetic of the present invention, the nonionic surfactant contained as the component (C) is not particularly limited as long as it can be used as an emulsifier. For example, propylene glycol, glycerin, sorbitan, sorbit Fatty acids such as fatty acid esters of polyhydric alcohols such as pentaerythritol and sucrose, polyoxyethylene polyhydric alcohol fatty acid esters, polyethylene glycol fatty acid esters, polyglycerin fatty acid esters, triethanolamine fatty acid esters, polyoxyethylene hydrogenated castor oil derivatives Ester type nonionic surfactant, polyoxyethylene alkyl ether, polyoxyethylene alkylphenyl ether or other alkyl or aryl ether type nonionic surfactant, polyoxyethylene-polyoxyp Pyrene block copolymers, polyoxyethylene ethylenediamine - polyoxypropylene block copolymer adducts, fatty acid monoalkanolamides, fatty acid dialkanolamide, can be exemplified polyoxyethylene alkyl amines.

  More specifically, polyoxyethylene sorbitan monolaurate, polyoxyethylene sorbitan monopalmitate, polyoxyethylene sorbitan monostearate, polyoxyethylene sorbitan monooleate, polyoxyethylene sorbitan trioleate, polyoxyethylene sorbitan tetra Polyoxyethylene sorbitan fatty acid esters such as oleate; polyoxyethylene sorbite monolaurate, polyoxyethylene sorbite monostearate, polyoxyethylene sorbite tetrastearate, polyoxyethylene sorbite hexastearate, polyoxyethylene sorbite monooleate , Polyoxyethylene sorbit tetraoleate, polyoxyethylene sorbite pentaoleate, polyoxye Polyoxyethylene sorbite fatty acid ester such as Rensorbite monoisostearate, polyoxyethylene sorbite tetraisostearate; polyoxyethylene glycerin monostearate, polyoxyethylene glycerin monoisostearate, polyoxyethylene glycerin triisostearate, Polyoxyethylene glycerol fatty acid esters such as polyoxyethylene glycerol monooleate; polyoxyethylene monolaurate, polyoxyethylene monostearate, polyoxyethylene distearate, polyoxyethylene monooleate, polyoxyethylene dioleate , Ethylene glycol fatty acid esters such as ethylene glycol distearate; polyoxyethylene lauryl ether, polyoxyethylene ether Polyether, polyoxyethylene stearyl ether, polyoxyethylene oleyl ether, polyoxyethylene behenyl ether, polyoxyethylene alkyl or alkenyl ether such as polyoxyethylene 2-octyldodecyl ether; undecylenic acid monoethanolamide, lauric acid monoethanolamide, etc. Fatty acid dialkanolamides such as lauric acid diethanolamide, coconut oil fatty acid diethanolamide; sorbitan monolaurate, sorbitan monopalmitate, sorbitan monostearate, sorbitan sesquistearate, sorbitan tristearate, sorbitan mono Isostearate, sorbitan sesquiisostearate, sorbitan monooleate, sorbitan sesqui Sorbitan fatty acid esters such as reate, sorbitan trioleate, palm oil fatty acid sorbitan; monoundecylenic acid glycerin, monomyristic acid glycerin, monostearic acid glycerin, distearic acid glycerin, monooleic acid glycerin, sesquioleic acid glycerin, mono cottonseed oil fatty acid glycerin, Examples thereof include glycerin fatty acid esters such as glyceryl monoerucate; propylene glycol fatty acid esters such as propylene glycol monostearate; sucrose fatty acid esters; polyoxyethylene hydrogenated castor oil.

  Among the above nonionic surfactants, fatty acid ester type nonionic surfactants and alkyl ether type nonionic surfactants are preferred in terms of feel when using cosmetics, and sorbitan fatty acid esters, glycerin fatty acids. More preferred are esters, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene sorbite fatty acid esters and polyoxyethylene alkyl ethers, sorbitan monostearate, sorbitan sesquioleate, glyceryl monostearate, polyoxyethylene sorbitan monostearate, polyoxy Particularly preferred are ethylene sorbitan monooleate, polyoxyethylene sorbite monoisostearate, polyoxyethylene sorbite monooleate, polyoxyethylene stearyl ether, etc. It is exemplified as casting.

  The oil-in-water emulsified cosmetic of the present invention can contain one or more of the nonionic surfactants as the component (C), and the lipophilic non-ionic A weighted average value of an HLB (hydrophile-lipophile balance) value using a combination of an ionic surfactant and a hydrophilic nonionic surfactant and weighting the blending amount of each component is in the range of 9-11. Is particularly preferable in terms of emulsion stability.

  Here, the said HLB value can be calculated | required by the following (1) formula advocated by Kawakami (Kawakami: Science, 23,546 (1953)).

  The nonionic surfactant as component (C) is contained in the total amount of the oil-in-water emulsion cosmetic of the present invention in an amount of 0.1 to 8% by weight, preferably 0.5 to 6% by weight. More preferably 1 to 4% by weight is contained. When the content of the component (C) is less than 0.1% by weight, the familiarity with the skin and the richness at the time of application are lowered, and it may be difficult to obtain a stable emulsion composition. On the other hand, when the content of the component (C) exceeds 8% by weight, it becomes sticky, and makeup loss tends to occur.

  Further, the oil-in-water emulsified cosmetic of the present invention includes oil agents such as hydrocarbon oils, fats and oils, fatty acids, higher alcohols, anionic surfactants, and cationic surfactants, as long as the characteristics of the present invention are not impaired. Surfactants other than nonionic surfactants such as amphoteric surfactants; moisturizers such as polyhydric alcohols, sugars and amino acids; thickeners such as water-soluble polymers; vitamins, nucleic acids, animal and plant extracts Additives generally blended in cosmetics such as bioactive ingredients such as preservatives, antioxidants, UV absorbers, pH adjusters, and pigments can be blended as necessary.

  In addition, as a pH adjuster suitable for the preparation of the oil-in-water emulsion cosmetic of the present invention, buffer solutions such as citrate buffer; basic substances such as potassium hydroxide, sodium hydroxide, arginine; sodium lactate, pyrrolidone carvone Examples include salts of weak acids such as sodium acid and strong bases.

  The oil-in-water emulsified cosmetic of the present invention is in the form of an emulsion, semi-solid or solid, and is a skin cosmetic such as an emulsion, emollient cream, or massage cream; Cosmetics; can be provided as body cosmetics such as hand creams and body creams.

  The oil-in-water emulsified cosmetic according to the present invention can be prepared by various emulsification methods suitable for the preparation of an oil-in-water emulsion. For example, the above components (A), (B) and (C) And the other oil-soluble components are mixed and heated to add a homogeneous oil phase to the heated aqueous phase with the water-soluble components dissolved, and then emulsified with an emulsifier such as a homomixer. Can do. Furthermore, stability can be further improved by using a powerful high-pressure homogenizer or ultrasonic emulsifier.

Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples. As examples of the oil-in-water emulsified cosmetic of the present invention, oil-in-water emulsified cosmetics shown in Table 1 were prepared. Content of each component in a table | surface was shown by the mass%.
In addition, each cosmetic of an Example and a comparative example mixes the oil phase component of (A)-(D) in Table 1, and after heating to 60 to 80 degreeC and making it uniform, the said oil phase component Was added to water previously heated to 60 ° C. to 80 ° C. with stirring and emulsified with a homomixer.

  The following evaluation was performed about each oil-in-water type emulsion cosmetic of an Example and a comparative example.

(1) Richness at the time of application The following criteria are used for the richness when 20 persons are panelists and each of the oil-in-water emulsified cosmetics of Examples and Comparative Examples of 1.0 g is applied to the inner side of the right arm forearm using the middle finger. Sensory evaluation.
<Sensory evaluation criteria>
2 points: When it feels thick and very rich.
1 point: When it feels thick and thick.
0 points: When the feel is not thick and there is no richness.

About each of the oil-in-water type emulsified cosmetics of an Example and a comparative example, the total score of 20 persons was calculated | required and the following reference | standard evaluated.
<Evaluation criteria>
A: There are no panelists with a total score of 35 or more and a score of 0; it is a cosmetic that is very excellent in richness during application.
○: A total of 30 points or more and less than 35 points, or a total score of 35 points or more and one or two panelists who determined 0 points;
Δ: Total score of 20 points or more and less than 30 points;
X: The total score is less than 20; the cosmetic lacks richness at the time of application.

(2) Sustainability of moisturizing effect 20 persons were panelists, and 2.0 g of each of the oil-in-water emulsified cosmetics of Examples and Comparative Examples was applied to the entire face before going to bed. The moisturizing effect of the next morning was subjected to sensory evaluation according to the following criteria.
<Sensory evaluation criteria>
2 points: When the moisturizing effect is hardly reduced and is felt to be sustained.
1 point: When the moisturizing effect is slightly reduced, but it is generally sustained.
0 point: When the moisturizing effect is greatly reduced and it is not sustained.

About each of the oil-in-water type emulsified cosmetics of an Example and a comparative example, the total score of 20 persons was calculated | required and the following reference | standard evaluated.
<Evaluation criteria>
A: There are no panelists with a total score of 35 or more and a score of 0; it is a cosmetic that is very excellent in the durability of the moisturizing effect.
○: One or two panelists with a total score of 30 points or more and less than 35 points, or a total score of 35 points or more and a 0 point determination; a cosmetic with excellent durability of the moisturizing effect.
(Triangle | delta): The total score is 20 points or more and less than 30 points;
X: The total score is less than 20: It is a cosmetic lacking in sustainability of the moisturizing effect.

(3) Familiarity to skin 20 persons were panelists, and 2.0 g of each of the oil-in-water emulsified cosmetics of Examples and Comparative Examples was applied to the entire face before makeup. The sensory evaluation was performed according to the following criteria for familiarity with the skin immediately after the application.
<Sensory evaluation criteria>
2 points: When you feel familiar with the skin very quickly and can make up immediately.
1 point: If you feel familiar to your skin quickly and can make up immediately.
0 points: When familiar with the skin is slow and you feel that you cannot make up immediately.

About each of the oil-in-water type emulsified cosmetics of an Example and a comparative example, the total score of 20 persons was calculated | required and the following reference | standard evaluated.
<Evaluation criteria>
A: There are no panelists who have a total score of 35 or more and a score of 0; it is a cosmetic that is very well adapted to the skin.
○: One or two panelists with a total score of 30 points or more and less than 35 points, or a total score of 35 points or more and a score of 0; a cosmetic excellent in familiarity with the skin.
Δ: Total score of 20 points or more and less than 30 points; cosmetics slightly inferior to skin.
X: The total score is less than 20; the cosmetic is inferior to the skin.

(4) No stickiness 20 panelists were used, and 2.0 g of each of the oil-in-water emulsified cosmetics of Examples and Comparative Examples was applied to the entire face before makeup. About the non-stickiness immediately after completion | finish of application | coating, sensory evaluation was performed on the following reference | standard.
<Sensory evaluation criteria>
2 points: When there is no stickiness.
1 point: When it is felt that there is almost no stickiness.
0 points: When feeling sticky.

About each of the oil-in-water type emulsified cosmetics of an Example and a comparative example, the total score of 20 persons was calculated | required and the following reference | standard evaluated.
<Evaluation criteria>
A: There are no panelists with a total score of 35 or more and a score of 0; it is a cosmetic that is extremely non-sticky.
○: One or two panelists with a total score of 30 points or more and less than 35 points, or a total score of 35 points or more and a 0 point determination; excellent cosmetics with no stickiness.
Δ: Total score of 20 points or more and less than 30 points;
X: Total score is less than 20; it is a sticky cosmetic.

(5) Finishing of Makeup (Makeup) 2.0 g of each of the oil-in-water emulsified cosmetics of Examples and Comparative Examples was applied to the entire face before makeup. Immediately after application, make-up was performed, and the finish was evaluated according to the following criteria immediately after and after 4 hours.
<Evaluation criteria>
(Double-circle): The makeup cosmetics are applied evenly, there is almost no twist and unevenness, and the makeup finish is very good.
○: The makeup unevenness, twist, and unevenness of the makeup cosmetics are only partially, and the makeup finish is good.
X: Unevenness, twist and irregularities in the makeup cosmetics are clearly present, and the makeup finish is poor.

(6) Storage stability Each oil-in-water emulsified cosmetic of Examples and Comparative Examples is sealed in a transparent glass container and stored at 5 ° C, 25 ° C and 40 ° C for 1 month, and the appearance is observed. Evaluation was made according to the following four-stage criteria. For the purpose of the present invention, when the evaluation result is ◎ or ○, it is recognized as a cosmetic having sufficient storage stability.
<Evaluation criteria>
(Double-circle): There is no change of an external appearance and stability is favorable.
○: Almost no change in appearance, and stability is generally good.
Δ: Some separation or discoloration was confirmed, and the stability was slightly poor.
X: Separation or discoloration is clearly confirmed and stability is poor.

  The above evaluation results are shown in Table 2.

  As shown in Table 2, the oil-in-water emulsified cosmetics of Examples 1 to 10 are excellent in the body and the durability of the moisturizing effect at the time of application, have good familiarity with the skin, are not sticky, and have no makeup. The finish was good and it was difficult to cause makeup loss. In particular, good makeup persistence was also observed in the eyes and mouth where makeup loss tends to occur.

  On the other hand, in the oil-in-water emulsified cosmetics of Comparative Examples 1 to 7, sufficient evaluation was not obtained in one or more evaluation items. That is, in the cosmetic of Comparative Example 1, since the component (A) was contained beyond the scope of the present invention, stickiness was felt, the finish of the makeup was poor, and makeup slippage was further observed. . In the cosmetic of Comparative Example 2, since the component (A) was not contained, the body and the familiarity with the skin at the time of application were insufficient, and further, makeup slippage was observed. The cosmetic of Comparative Example 3 contains other oils, but does not contain the component (A), so the durability of the moisturizing effect and the familiarity to the skin are insufficient, and the makeup finish is poor. In addition, makeup was lost. In the cosmetic of Comparative Example 4, since the component (B) was contained beyond the scope of the present invention, stickiness was felt, the finish of the makeup was poor, and makeup slippage was further observed. In the cosmetic of Comparative Example 5, since the component (B) was not contained, the richness at the time of application was insufficient, the sustainability of the moisturizing effect was low, and further makeup slippage was observed. Although the cosmetic of Comparative Example 6 contains other oils, it does not contain the component (B), so the richness at the time of application and the sustainability of the moisturizing effect are insufficient, and makeup slippage was further observed. . In the cosmetic of Comparative Example 7, since component (C) was contained beyond the scope of the present invention, stickiness was felt, the makeup finish was poor, and makeup slippage was further observed.

  In addition, about the oil-in-water type emulsion cosmetics of an Example and a comparative example, favorable storage stability was recognized in all.

  As described above in detail, according to the present invention, the richness and persistence of the moisturizing effect at the time of application are excellent, the familiarity to the skin is good, and there is no stickiness, and the finish and sustainability of the makeup, especially the eyes and An oil-in-water emulsified cosmetic that does not adversely affect the durability of the makeup at the mouth can be obtained.

Claims (1)

  (A) 0.1 wt% to 5 wt% of one or more selected from the group consisting of monoalkyl glyceryl ether and monoalkenyl glyceryl ether, and (B) 1 wt% to 20 wt% of dimer acid ester % And (C) 0.1% by weight to 8% by weight of a nonionic surfactant.