JP2003286134A - Cleansing cosmetic - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prepare a cleansing cosmetic which has excellent spread to the skin in use, compatibility with stain, is excellent in cleaning property, rinsing property and feed after use, improved in storage stability and high in safety. <P>SOLUTION: This cleansing cosmetic comprises (a) a hydrocarbon oil liquid at 25°C, (b) an ester oil liquid at 25°C, (c) a polyoxyethylene glycerol fatty acid ester nonionic surfactant and (d) a sorbitan fatty acid ester nonionic surfactant in the ratio of 20-75 wt.% of (a+b), 20-60 wt.% of (c+d), 60-98 wt.% of (a+b+c+d) and in the weight ratio (a/b) of 1/1-10/1 and in the weight ratio (c/d) of 1/1-4/1. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleansing agent for skin which removes stains such as make-up cosmetics, UV-preventive cosmetics, and sebum, and more specifically, spreads to the skin during use and stains. The present invention relates to a cleansing agent which is excellent in conformability, detergency, rinsing property and feel after use and has good storage stability and high safety.

[0002]

2. Description of the Related Art Make-up cosmetics and UV-preventive cosmetics have the effect of protecting the skin from external stimuli and making it look more beautiful, and are indispensable in the life of modern society. However, since these cosmetics contain a large amount of oily components, inorganic pigment components, etc., they block pores on the skin, interfere with metabolism, and the cosmetics themselves may gradually oxidize and have an irritating property. Use of can cause skin problems. Therefore, it is desirable to remove these cosmetics by using a cleansing agent once a day. Cleansing agents include wipe-type and wash-off products with water or hot water, but in recent years, "wash-off" products that are simpler and have less burden on the skin have become popular. The properties required for a wash-off type cleansing agent include spreadability during use, easy compatibility with stains, detergency (removal of stains), rinsability, and feel after washing. Various compositions have been investigated so far. It has been.

For example, JP-A-62-108806 and JP-A-3-161428 disclose cleansing agents in which a specific surfactant and a liquid oil are combined. However, although these compositions have excellent spreadability during use, easy compatibility with stains, and excellent cleanability, the feel after use is not always satisfactory. Further, JP-A-9-87139 discloses a cleansing cosmetic containing an alkyl acrylate methacrylate copolymer, a specific surfactant, a water-soluble polyhydric alcohol, and an oily component content of 2% by weight or less. Fees are disclosed. However, since the content of the oily component was small, it was not satisfactory in terms of spreadability and stain compatibility during use and cleanability. Further, JP-A-8-127512 discloses a gel-type cleansing composition containing a nonionic surfactant, a water-soluble compound having a hydroxyl group, a liquid oil and water, but it is easily compatible with stains. That wasn't enough.

Further, polyoxyethylene glycerin fatty acid ester is often used as a cleansing agent for the purpose of improving detergency, rinsing property and feeling after use. For example, JP-A No. 11-92359 discloses a one-phase type transparent skin cleanser containing polyoxyethylene glycerin fatty acid ester, and JP-A No. 2001-19619 contains a gelling agent and polyoxyethylene fatty acid glyceryl. Although a cleansing cosmetic composition is disclosed,
It was not sufficient in terms of ease of use and spreadability and dirt. Further, in JP-A-2001-213761, one or more selected from anionic surfactants, nonionic surfactants other than polyoxyethylene glycerin fatty acid ester, and amphoteric surfactants and polyoxys are used. Although a skin cleansing composition containing ethylene glycerin fatty acid ester and a non-silicone oil agent is disclosed, it is not sufficient in terms of easy compatibility with stains and detergency.

Thus far, no composition has been obtained which satisfies the requirements of spreadability during use, compatibility with stains, detergency, feel after use, and storage stability at the same time. Since cleansing agents are often used on the face, development of cleansing agents that are less irritating to the eyes is desired.

[0006]

DISCLOSURE OF THE INVENTION The present invention has solved the above problems and has excellent spreadability to the skin during use, compatibility with stains, cleanability, rinsing properties, feel after use, and storage stability. The purpose is to provide a good and safe cleansing agent.

[0007]

Means for Solving the Problems That is, the present invention includes (1) the following a, b, c and d are contained, and a + b is 2
0 to 75% by weight, c + d is 20 to 60% by weight, a + b +
c + d is 60 to 98% by weight, and the weight ratio of a and b is a /
b is 1/1 to 10/1, and the weight ratio c / d of c and d is 1/1
A cleansing charge of ~ 4/1. a. Hydrocarbon oil liquid at 25 ° C b. Ester oil liquid at 25 ° C. c. Polyoxyethylene glycerin fatty acid ester type nonionic surfactant d. Sorbitan fatty acid ester type nonionic surfactant (2) e. Add 1 to 15 parts of liquid cyclic silicone oil at 25 ° C.
The cleansing agent as described above, characterized in that the cleansing agent is contained in a weight percentage. (3) f. The weight ratio of the structural unit based on 2- (meth) acryloyloxyethylphosphorylcholine and the structural unit based on (meth) acrylic acid alkyl ester represented by formula (1) is 100/0 to 10/90 and 60 to 100.
Polymer containing by weight%,

[Chemical 2] (Wherein R ¹ is a hydrogen atom or a methyl group, R ² , R ³ and R ⁴ are alkyl groups having 1 to 8 carbon atoms, and n is an integer of 2 to 4). The cleansing agent according to (1) or (2) above, characterized in that it is contained.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The component a used in the present invention is 25 ° C.
It is a liquid hydrocarbon oil. Hydrocarbon oil has 1 carbon
It is a hydrocarbon compound of 0 or more, may have a linear, branched or cyclic structure, or may have a saturated or unsaturated bond, and is naturally present as a terpene which is a constituent component of petroleum and plant essential oils. In addition to those, artificially synthesized ones can also be used. For example, decane, undecane, dodecane,
Examples include normal paraffins such as tridecane, tetradecane, pentadecane, and decene, isoparaffins with branched carbon chains, squalane and squalene, and spread during use, easy compatibility with stains, washability, feel after use and storage stability. From the viewpoint of sex, regular paraffin, isoparaffin,
Among squalanes, it is preferable to use a compound having a viscosity at 25 ° C. of 100 mPa · s or less.

The component b used in the present invention is an ester oil which is liquid at 25 ° C. Ester oil and carboxylic acid and 1-3
A carboxylic acid ester compound having a structure obtained by a dehydration reaction or a transesterification reaction with a dihydric alcohol, specifically, diethyl sebacate, cetyl 2-ethylhexanoate, isocetyl 2-ethylhexanoate, palmitic acid. Isopropyl, 2-ethylhexyl palmitate, isopropyl isostearate, 2-hexyldecyl isostearate, isostearyl isostearate, trimethylpropane triisostearate, octyldodecyl myristate, isopropyl myristate,
Isostearyl myristate, isocetyl myristate, hexyl laurate, ethyl oleate, isostearyl pivalate, isopropyl isostearate, isononyl isononanoate, 2-ethylhexyl isononanoate, isodecyl isononanoate, ethyl oleate, isotridecyl isononanoate, didecanoate Synthetic ester oils such as neopentyl glycol, glyceryl tri-2-ethylhexanoate, glyceryl trihexanoate, jojoba oil,
Ester oils derived from natural oils and fats such as sunflower oil, olive oil, macadamia nut oil, tea seed oil, cottonseed oil, perilla oil, safflower oil, and kyonin oil can be mentioned. From the viewpoint of easy compatibility with stains, detergency and feeling after use, diethyl sebacate, cetyl 2-ethylhexanoate, 2 are preferred.
-Isocetyl ethylhexanoate, isopropyl palmitate, 2-ethylhexyl palmitate, ethyl oleate, isononyl isononanoate, 2-ethylhexyl isononanoate, isodecyl isononanoate, glyceryl tri-2-ethylhexanoate, jojoba oil, sunflower oil, olive oil, Macadamia nut oil, tea seed oil, cotton seed oil, perilla oil,
Safflower oil and Kyonin oil.

In the composition of the present invention, the total content of components a and b, a + b, is 20 to 75% by weight, preferably 30 to
70% by weight, more preferably 40 to 65% by weight. When it is less than 20% by weight, compatibility with oily stains and detergency are deteriorated, and when it exceeds 75% by weight, not only rinseability and feel after use are deteriorated, but also storage stability of the product is deteriorated. Become. Also, the weight ratio a of the component a and the component b
/ B is 1/1 to 10/1, preferably 1/1 to 8
/ 1, more preferably 3/2 to 5/1. 1/1
When it is less than 10, the storage stability is poor, and when it is more than 10/1, the compatibility with oily stains and the cleaning property are poor.

The component c polyoxyethylene glycerin fatty acid ester type nonionic surfactant used in the present invention is a compound obtained by esterifying glycerin and a fatty acid and then adding ethylene oxide to the polyoxyethylene. Glycerin monofatty acid ester, polyoxyethylene glycerin difatty acid ester,
The c component can be used alone or in combination of two or more kinds.

The fatty acid constituting the c component used in the present invention is a saturated or unsaturated fatty acid having 8 to 24 carbon atoms, such as lauric acid, myristic acid, palmitic acid,
A single fatty acid such as stearic acid and oleic acid, a mixed fatty acid derived from animal and vegetable oils such as coconut oil fatty acid and tallow fatty acid can be used. The preferred fatty acid has 10 to 18 carbon atoms. When the number of carbon atoms in the fatty acid is less than 8, lipophilicity becomes low, so that it may not be compatible with oily stains and the washability may be deteriorated, and in addition, an irritating odor may occur. The carbon number of fatty acid is 2
When it exceeds 4, the hydrophilicity is lowered and the compatibility with water is deteriorated, so that it is difficult to make a clean wash.

The average number of moles of ethylene oxide added to 1 mole of glycerin is preferably 5 to 100, more preferably 5 to 80, and most preferably 7 to 50. When the average number of added moles of ethylene oxide is less than 5, the hydrophilicity is lowered and the compatibility with water is deteriorated, so that it is difficult to perform a clean washing. On the other hand, when it exceeds 100, the lipophilicity becomes low, so that it becomes poorly compatible with oily stains and the cleanability may deteriorate. The HLB value of the c component used in the present invention is preferably 10 to 20, more preferably 10 to 18, and most preferably 11.
~ 16. When the HLB value is less than 10, the hydrophilicity is low and the compatibility with water is poor, so that a clean washing is hard to occur. On the other hand, when it exceeds 20, not only the storage stability is deteriorated, but also the lipophilicity is lowered, so that the compatibility with oily stains is deteriorated and the cleaning property may be deteriorated. The HLB value here is Griffin (W.
C. Griffin: J. Soc. Cosmetic
Chemists, 33, 1180 (1960)) H
It is defined by the concept of LB.

As the component c, specifically, polyoxyethylene (7 mol) glycerin coconut oil fatty acid ester (H
LB value = 13.0), polyoxyethylene (12 mol)
Glycerin lauric acid ester (HLB value = 15.
0), polyoxyethylene (20 mol) glycerin oleic acid ester (HLB value = 15.4), polyoxyethylene (30 mol) glycerin coconut oil fatty acid ester (HLB value = 17.4) and the like.

The sorbitan fatty acid ester type nonionic surfactant which is the d component used in the present invention is a compound obtained by subjecting sorbitan and a fatty acid to an ester reaction, and includes sorbitan monofatty acid ester, sorbitan difatty acid ester and sorbitan trifatty acid. Examples thereof include esters and sorbitan tetra fatty acid esters. In the present invention, these compounds can be used alone or in combination of two or more as the d component.

The fatty acid constituting the d component used in the present invention is a saturated or unsaturated fatty acid having 8 to 24 carbon atoms, and examples thereof include the fatty acid constituting the c component. The preferred fatty acid has 10 to 20 carbon atoms. When the number of carbon atoms in the fatty acid is less than 8, lipophilicity becomes low, so that it may not be compatible with oily stains and the washability may be deteriorated, and in addition, an irritating odor may occur. Further, when the carbon number of the fatty acid exceeds 24, the hydrophilicity becomes low, the compatibility with water becomes poor, and it is difficult to make a clean washing.

Specific examples of the component d include sorbitan monostearate, sorbitan monooleate, sorbitan sesquioleate and sorbitan trioleate.

In the composition of the present invention, the total content of the components c and d, c + d, is 20 to 60% by weight, preferably 25 to
It is 50% by weight, more preferably 30-40% by weight. If it is less than 20% by weight, the washing property and storage stability will be poor, and if it exceeds 60% by weight, the spreadability during use will be poor. The weight ratio c / d of the c component and the d component is 1/1.
˜4 / 1, preferably 3/2 to 7/2, and more preferably 2/1 to 3/1. When it is less than 1/1, not only the rinsing property deteriorates, but also the feel and storage stability after use deteriorate, and when it exceeds 4/1, the storage stability deteriorates.

In the composition of the present invention, the total content of the components a, b, c and d, a + b + c + d, is 60 to 98% by weight.
It is preferably 70 to 97% by weight, more preferably 80 to 95% by weight. If the amount is less than 60% by weight, the compatibility with stains and the detergency are deteriorated, and if the amount is more than 98% by weight, the feel after use may be deteriorated.

In the present invention, it is preferable to add the component e for the purpose of further improving spreadability during use, compatibility with oily stains, and cleanability. The e component used in the present invention is 25
It is a cyclic silicone oil that is liquid at ° C. Here, the cyclic silicone oil is a cyclic polysiloxane compound, and examples thereof include dimethylcyclosiloxane in which two methyl groups are bonded to one silicon atom. The component e used in the present invention is not limited to this, and may be a cyclic polysiloxane compound that is liquid at 25 ° C. In the case of dimethylcyclosiloxane, a compound having a degree of polymerization of siloxane of 4 or more is liquid at 25 ° C., and examples of such a compound include octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, and tetradeca. Methylcycloheptasiloxane and the like are mentioned, but octamethylcyclotetrasiloxane, from the viewpoint of easy compatibility with stains, cleanability, and feeling after use,
The use of decamethylcyclopentasiloxane is preferred.
Chain silicone oils have poor compatibility with dirt, cleanability, and feeling after use.

In the composition of the present invention, the amount of the component e added is 1 to 15% by weight, preferably 2 to 12% by weight, more preferably 5 to 10% by weight. When it is less than 1% by weight, compatibility with oily stains, detergency and feel after use are not sufficiently improved, and when it exceeds 15% by weight, storage stability of the product may be deteriorated. When the e component is added, the total content of the oily components a and b of the present invention and the e component is preferably 21 to 80% by weight, more preferably 30 to 75% by weight. If it exceeds 80% by weight, the storage stability may deteriorate.

In the present invention, it is preferable to further add the component f for the purpose of improving safety and storage stability. The polymer of the f component used in the present invention is represented by the formula (1), and is a homopolymer of 2- (meth) acryloyloxyethylphosphorylcholine (hereinafter referred to as PC), or P
It is a polymer obtained by copolymerizing C and an alkyl (meth) acrylate, and its weight ratio is 100/0 to 10/9.
0, preferably 100/0 to 30/70, more preferably 95/5 to 50/50. PC in the polymer
The total amount of the structural units based on (1) and the structural units based on (meth) acrylic acid alkyl ester is 60 to 100% by weight, preferably 70 to 100% by weight, and more preferably 80 to 100% by weight. The molecular weight of the polymer is preferably 10,000 to 10,000,000, more preferably 50,000 to 5,000,000.
Is.

In the polymer of the component f used in the present invention, a copolymer of PC and another monomer having (meth) acrylic acid alkyl ester copolymerizability is also within a range not impairing the effect of the present invention. Can be included. The other monomer copolymerizable with PC and (meth) acrylic acid alkyl ester is a compound having a double bond capable of addition polymerization, such as ethylene, propylene, butene,
Olefinic hydrocarbons such as isobutene and styrene, and their isomerized olefins, polymerized olefins, or olefinic compounds into which various derivatives are introduced; acrylic acid, methacrylic acid, vinylacetic acid, itaconic acid, crotonic acid, maleic acid, Ethylenically unsaturated carboxylic acids such as fumaric acid and their multimers, anhydrides, carbon atoms 1 to
6 an ester with a polyhydric alcohol, or an ethylenically unsaturated carboxylic acid derivative in which a carbonyl group, an amino group, a cyano group, a nitrile group or the like is introduced into these; vinyl alcohol and an ester of this with various carboxylic acids, various alcohols Ethers, or carbonyl groups on these,
Amino group, cyano group, ethylenically unsaturated carboxylic acid derivative having a nitrile group introduced, vinyl alcohol and esters of these with various carboxylic acids, ethers with various alcohols, or carbonyl groups, amino groups, cyano groups, Examples include vinyl alcohol derivatives with nitrile groups introduced.

In the monomer PC, R ¹ is a hydrogen atom or a methyl group, and R ² , R ³ and R ⁴ have 1 to 8 carbon atoms.
And an n is an integer of 2 to 4. Preferred is 2-methacryloyloxyethylphosphorylcholine (hereinafter referred to as MPC) in which R ¹ , R ² , R ³ and R ⁴ are methyl groups and n is 2. The alcohol constituting the monomeric (meth) acrylic acid alkyl ester is an alcohol having 1 to 6 carbon atoms, preferably 2 to 5 carbon atoms.
Of alcohols, more preferably alcohols having 3 to 4 carbon atoms. In addition, (meth) acrylic represents methacrylic or acrylic.

In the composition of the present invention, the amount of the component f added is 0.0001 to 1% by weight, preferably 0.001 to 1% by weight.
It is 0.5% by weight, more preferably 0.01 to 0.1% by weight. When it is less than 0.0001% by weight, the effect of improving safety and storage stability is insufficient, and when it is more than 1% by weight, not only spreadability during use becomes poor, but also it is disadvantageous in cost. Not preferable.

In addition to the above-mentioned components, the cleansing composition of the present invention optionally contains components generally used in cosmetics, such as lower alcohols, oily bases, humectants, water-soluble polymers, silicone derivatives, Ionic surfactants, anionic surfactants, amphoteric surfactants, semipolar surfactants, cationic surfactants, inorganic or organic powders, inorganic or organic pigments, dyes, inorganic or organic salts, pH adjustment It is possible to contain preparations, bactericides, chelating agents, antioxidants, ultraviolet absorbers, anti-inflammatory agents, natural extracts, essential oils, fragrances and the like.

[0027]

The present invention will be described in more detail with reference to Examples. Examples 1 to 7 and Comparative Examples 1 to 10 Cleansing agents shown in Tables 1 to 3 were prepared and evaluated by the following methods. The results are shown in Tables 1 to 3. The content in the table shows the effective weight%.

<Component a> The following three types of hydrocarbon oils were used. All of these are liquid at 25 ° C. <a-1 component> Isoparaffin: "Pearl Dream 4" manufactured by NOF Corporation <a-2 component> Isoparaffin: "PEARLREAM E" manufactured by NOF Corporation
X "<a-3 component>Squalane:" Phytosqualane "manufactured by Sofim

<Component b> The following seven kinds of ester oils were used. All of these are liquid at 25 ° C. <b-1 component> Jojoba oil: "refined jojoba oil" manufactured by Koei Kogyo Co., Ltd. <b-2 component> Ethyl oleate: NOFABLE manufactured by NOF CORPORATION
EO-85S "<b-3 component> 2-ethylhexanoate cetyl:" CEH "manufactured by Higher Alcohol Industry Co., Ltd. <b-4 component> Isodecyl isononanoate: Higher alcohol Co., Ltd." KAK-109 "< Component b-5> Glyceryl tri-2 ethylhexanoate: NOF CORPORATION
Made "Panasate 800B"<b-6component> Sunflower oil: "refined sunflower oil 85" manufactured by NOF Corporation <b-7 component> Olive oil: "refined olive oil" manufactured by NOF Corporation

<Component c> The following three types of polyoxyethylene glycerin fatty acid ester type nonionic surfactants were used. <Component c-1> Polyoxyethylene (7 mol) glycerin coconut oil fatty acid ester: "CETIOL" manufactured by Cognis Japan KK
HE ", HLB value = 13.0 <c-2 component> Polyoxyethylene (20 mol) glycerin oleate: manufactured by NOF CORPORATION
MO-220 ", HLB value = 15.4 <c-3 component> Polyoxyethylene (12 mol) glycerin lauric acid ester:" Unigri ML-21 "manufactured by NOF Corporation.
2 ", HLB value = 15.0

<Component d> Three kinds of sorbitan fatty acid ester type nonionic surfactants shown below were used. <d-1 component> Sorbitan monostearate: NOF Corporation
"Nonion SP-60RP"<d-2component> Sorbitan monooleate: NOFABLE SO-851S manufactured by NOF CORPORATION <d-3 component> Sorbitan sesquioleate: NOF CORPORATION
Made by "NOFABLESO-852S"

<Component e> The following two types of cyclic silicone oils were used. All of these are liquid at 25 ° C. <e-1 component> Decamethylcyclopentasiloxane: Shin-Etsu Chemical Co., Ltd. "Silicone KF-995"<e-2component> Octamethylcyclotetrasiloxane: Shin-Etsu Chemical Co., Ltd. "Silicone KF-994"

<F component> The following two types of polymers were used. <F-1 component> MPC 90% by weight and butyl methacrylate 10% by weight
5% aqueous solution of a copolymer having an average molecular weight of 600,000 consisting of the respective constitutional units of: "Lipidure-P" manufactured by NOF CORPORATION
MB ”<f-2 component> MPC 100% by weight average molecular weight consisting of structural units 8
40% aqueous solution of 10,000 polymers: "Li" manufactured by NOF CORPORATION
picture-HM "

<Other components><Other-1> Polyoxyethylene (20 mol) sorbitan monooleate: "NOFABLE E" manufactured by NOF CORPORATION
SO-8520 "

The properties shown in Tables 1 to 3 were evaluated by the following methods. (1) Twenty women (21 to 35 years old) who applied make-up during use were panelists, and the following items were used to judge the ease of use when using a cleansing fee, and the total value of 20 people was 30 points or more. Was evaluated as a cleansing agent with good spreadability during use. 2 points: When it feels that it spreads well during use and has a light feel. 1 point: When the user feels that the spread at the time of use is rather bad and the feeling is rather heavy. 0 points: When the user feels that the spreadability during use is poor and that heaviness is felt.

(2) Familiarity with stains 20 women (21 to 35 years old) who had makeup applied were used as panelists, and the familiarity with stains when a cleansing agent was used was judged as follows. Total number of people is 30
A point or more was evaluated as a cleansing agent having good compatibility with stains. 2 points: When it was felt that the makeup smeared in immediately after application. 1 point: When it was felt that it was slightly unsuitable for makeup stains. 0 point: When it is apparent that the product does not fit well with makeup stains.

(3) 20 women (21 to 35 years old) who had makeup applied were used as panelists, and the washability (stain removal) when a cleansing agent was used was judged as follows. Total value is 3
A score of 0 or more was evaluated as a cleansing agent with good detergency. 2 points: When it is felt that makeup dirt has been removed sufficiently. 1 point: When you feel that the makeup stains are not removed well. 0 point: When it is obvious that the makeup stains are not removed well.

(4) Rinseability 20 women (21 to 35 years old) who had makeup applied were panelists, and using a cleansing agent, the rinsability when rinsed with lukewarm water was judged as follows. A total value of 30 or more was evaluated as a cleansing agent having good rinsability. 2 points: When it was felt that rinsing could be done quickly without any slimyness during rinsing. 1 point: When it was felt that sliminess remained a little during rinsing and the ease of rinsing was poor. 0 point: When the sliminess is hard to be removed and the rinsing property is obviously poor.

(5) Feeling after use 20 women (21 to 35 years old) who had makeup applied were used as panelists, and the feeling after using the cleansing agent was judged as follows. 30 points or more was evaluated as a cleansing agent having a good feel after use. 2 points: There is no stickiness, and the skin feels smooth. 1 point: When you feel that the skin is slightly sticky or the skin is slightly oversized. 0 point: When the skin is sticky or the skin feels bulky.

(6) Solubility A in Lipstick A About 0.03 g of lipstick was applied to the bottom surface of a 100 ml beaker, 10 g of a cleansing agent was added, and the mixture was mixed with a stirrer to 6
The solubility for lipstick was evaluated as follows by stirring at a speed of 0 revolutions / minute, and when completely dissolved within 1 minute (⊚, ◯), the solubility A for lipstick is a good cleansing agent. It was evaluated. A: When completely dissolved within 30 seconds. ◯: When completely dissolved within 30 minutes over 30 seconds. Δ: When completely dissolved within 1 minute after exceeding 1 minute. X: When not completely dissolved within 2 minutes.

(7) Solubility in lipstick B A drop of a cleansing agent (about 0.05 g) was dropped on the back of a hand coated with about 0.05 g of lipstick, and rubbed with a finger 10 or 20 times and washed with water to remove lipstick. Solubility was evaluated as follows, and when it was completely removed by rubbing 10 times, it was evaluated that the solubility B for lipstick was a good cleansing agent. ◯: When completely removed by rubbing 10 times. Δ: When completely removed by rubbing 20 times. X: When it could not be completely removed even by rubbing 20 times.

(8) Storage stability The cleansing agent is sealed in a transparent glass container and kept at 0 ° C. and 25 ° C.
The sample was stored at 3 ° C and 40 ° C for 3 months, and its appearance was observed and evaluated according to the following 3 grades. ◯: Good stability (no change in appearance at any temperature) Δ: Slightly poor stability (slight coloring occurs at any temperature) ×: Poor stability (separation or coloring at any temperature) Is remarkable.)

(9) Ocular mucous membrane irritation test Japanese white rabbits (3 animals per group) were tested and evaluated as follows. The test was carried out based on the test method (405) of the OECD toxicity test guideline, and the test concentration was the stock solution. Judgment is made based on the criteria of Draize method, and it is judged as follows based on the maximum value of acute eye irritation index (IAOI value), and IAOI value is less than 2.5 (◎, ○)
The case was evaluated as a cleansing agent with low irritation. ◎: IAOI value 0 or more and less than 0.5 ○: IAOI value 0.5 or more and less than 2.5 △: IAOI value 2.5 or more and less than 15 ×: IAOI value 15 or more

[0044]

[Table 1]

[0045]

[Table 2]

[0046]

[Table 3]

From Examples 1 to 7, all of the cleansing agents of the present invention spread to the skin during use and are compatible with stains,
The composition was excellent in detergency, rinsability, and feel after use, and had good storage stability and high safety. On the other hand, in Comparative Examples 1 to 10, sufficient performance is not obtained. In Comparative Example 1, since the total content a + b of the components a and b was small, not only the compatibility with stains and the cleaning property were poor, but also the solubility with respect to lipstick was poor. Since Comparative Example 2 contained a large amount of a + b, not only the rinseability and the feel after use were poor, but also the storage stability was poor. In Comparative Example 3, since the weight ratio a / b of the component a and the component b was less than 1, the storage stability was poor. In Comparative Example 4, since a / b was large, not only the compatibility with stains and the cleaning property were poor, but also the solubility in lipstick was poor. Since Comparative Example 5 contains a polyoxyethylene sorbitan fatty acid ester type nonionic surfactant in place of the component c, it not only has poor detergency, rinseability and feel after use, but also has a high solubility in lipstick and The storage stability was also poor. In Comparative Example 6, since the total content of the components c and d, c + d, was small, the cleanability was poor, and the solubility in lipstick and the storage stability were also poor. Comparative Example 7 is c +
Due to the large amount of d, the spread during use was poor. Comparative Example 8 is c
Since the weight ratio c / d of the component and the d component was small, not only the rinsing property and the feeling after use were bad, but also the storage stability was poor. Comparative Example 9 had a large c / d and therefore had poor storage stability. In Comparative Example 10, since the total content of the components a, b, c and d, a + b + c + d, was small, not only the compatibility with stains and the washability were poor, but also the solubility in lipstick was poor.

[0048]

EFFECT OF THE INVENTION The cleansing composition of the present invention has excellent spreadability to the skin during use, compatibility with stains, cleanability, rinsing properties, and feel after use, and has good storage stability and high safety. It was a thing.

Claims (3)

[Claims] 1. A containing the following a, b, c and d, a +
b is 20 to 75% by weight, c + d is 20 to 60% by weight, a
+ B + c + d is 60 to 98% by weight, the weight ratio a / b of a and b is 1/1 to 10/1, and the weight ratio c / d of c and d is 1/1 to 4/1. And cleansing fee. a. Hydrocarbon oil liquid at 25 ° C b. Ester oil liquid at 25 ° C. c. Polyoxyethylene glycerin fatty acid ester type nonionic surfactant d. Sorbitan fatty acid ester type nonionic surfactant 2. e. 1 liquid cyclic silicone oil at 25 ° C
The cleansing agent according to claim 1, wherein the cleansing agent is contained in an amount of -15% by weight. 3. f. The weight ratio of the structural unit based on 2- (meth) acryloyloxyethylphosphorylcholine and the structural unit based on (meth) acrylic acid alkyl ester represented by the formula (1) is 100/0 to 10/60 and 60 to 1
Polymers containing 00% by weight, (Wherein R ¹ is a hydrogen atom or a methyl group, R ² , R ³ and R ⁴ are alkyl groups having 1 to 8 carbon atoms, and n is an integer of 2 to 4). The cleansing agent according to claim 1 or 2, wherein the cleansing agent is contained.