WO2019240067A1

WO2019240067A1 - Solubilized skin-cleansing composition

Info

Publication number: WO2019240067A1
Application number: PCT/JP2019/022893
Authority: WO
Inventors: 祐太大槻; 津田　ひろ子; 晃平山田; 準田島
Original assignee: 花王株式会社
Priority date: 2018-06-12
Filing date: 2019-06-10
Publication date: 2019-12-19
Also published as: JP7303032B2; CN112236125B; JP2019214564A; TW202000179A; CN112236125A; TWI808194B

Abstract

A solubilized skin-cleansing composition containing the following components (A), (B), (C), (D), (E), and (F): (A) 7-30% by mass of a non-ionic surfactant having an HLB of 6-18; (B) 0.1-4% by mass of a fatty acid salt in terms of fatty acid; (C) 5-20% by mass of an oil; (D) 10-60% by mass of a water-soluble solvent; (E) 0.1-6% by mass of a base selected from tris(hydroxymethyl)aminomethane, aminomethyl propanol, aminomethyl propanediol, arginine, lysine, histidine, tryptophan, and ornithine; and (F) 5-40% by mass of water, the content ratio (B)/(A) of component (B) to component (A) being 0.06-0.35.

Description

Solubilized skin cleansing composition

The present invention relates to a solubilized skin cleansing composition.

Conventionally, solid fat components contained in makeup stains such as waterproof mascara that are difficult to remove are dissolved and removed with an oil agent. Therefore, cleansing using an oil agent as a cleaning ingredient has been put on the market in various preparations such as creams, gels, and liquids (liquid).
These preparations are usually prepared by appropriately combining nonionic surfactants in order to wash away the oils in which the soil has been dissolved. However, a preparation that simply combines an oil agent and a nonionic surfactant has a problem that it does not refresh due to slickness during rinsing and residual oil after washing. For this reason, many consumers perform cleaning with a cleaning agent such as a facial cleanser after cleansing.

For example, Patent Document 1 describes that a cleansing composition containing a specific nonionic surfactant of HLB, a low-viscosity oil agent, and a water-soluble solvent is excellent in makeup detergency and can be washed cleanly. . However, although this cleansing composition can be washed away without being sticky, it has not been able to provide a refreshing feeling with a clean skin sensation as if it was washed with a facial cleanser.
Further, cleansing compositions (Patent Documents 2 and 3) in which anionic surfactants are combined with nonionic surfactants, oil agents, and polyhydric alcohols have been studied. The role of anionic surfactants here Although it improves the rinsing properties of the composition, it does not provide a crisp skin sensation as if it was washed on the skin after rinsing.
Furthermore, Patent Document 4 describes a cleansing composition that gives a refreshing feeling by combining an anionic surfactant with a silicone-based nonionic surfactant and silicone oil. However, when an anionic surfactant and a nonionic surfactant are allowed to coexist, there are large restrictions on the surfactant that can be selected in terms of long-term stability, and when washing the face while maintaining sufficient stability. It was not possible to obtain a composition that gave such a crisp feeling.

(Patent Document 1) JP 2008-184415 A (Patent Document 2) JP 2013-1698 (Patent Document 3) JP 9-175936 A (Patent Document 4) JP 2000-336014 A

The present invention includes the following components (A), (B), (C), (D), (E) and (F):
(A) HLB 6-18 nonionic surfactant 7-30% by mass,
(B) Fatty acid salt 0.1 to 4% by mass in terms of fatty acid,
(C) Oil agent 5-20% by mass,
(D) Water-soluble solvent 10 to 60% by mass,
(E) 0.1 to 6% by mass of a base selected from tris (hydroxymethyl) aminomethane, aminomethylpropanol, aminomethylpropanediol, arginine, lysine, histidine, tryptophan and ornithine,
(F) Water 5-40% by mass
And a solubilized skin cleanser composition having a content ratio (B) / (A) of component (B) to component (A) of 0.06 to 0.35.

Detailed Description of the Invention

In the present invention, the oil agent is solubilized by combining an appropriate amount of a nonionic surfactant having an HLB and an appropriate amount of a fatty acid salt, so that the detergency of the oil agent is exerted when applied to the skin, and the waterproof mascara and the like are difficult to fall off. Makeup can be dissolved. In addition, after washing off quickly without slickness, it is possible to leave a clean skin feel due to the formation of fatty acid salt scum on the skin. The purpose is to get.
In addition, when a nonionic surfactant is combined with a fatty acid salt, the pH becomes alkaline, so that during the long-term storage, the fatty acid production by hydrolysis of the nonionic surfactant falls into a state where the degree of neutralization as a fatty acid decreases, The problem of precipitation at low temperatures is also solved at the same time.

The present inventors contain a specific nonionic surfactant, a fatty acid salt, an oil agent, a water-soluble solvent, a specific base and water, and combine a specific nonionic surfactant and a fatty acid salt in a specific ratio. By using it, a solubilized skin cleanser composition that has excellent long-term storage stability, high detergency, can be quickly rinsed without slickness when rinsed, and gives a refreshed feel to the skin after rinsing. I found out.

The solubilized skin cleanser composition of the present invention has a high detergency, and can quickly soak without slickness at the time of rinsing, and can give a refreshed sensation as if washed with a facial cleanser after rinsing. It also has excellent long-term storage stability. In addition, the feeling of irritation to the eyes has also been improved.

In the present invention, solubilization means a thermodynamically stable one-liquid phase in which an oil agent and an aqueous phase component are mutually dissolved by a surfactant, and shows a transparent to translucent appearance.
In the solubilized skin cleansing composition of the present invention, the solubilization system is mainly composed of a nonionic surfactant and an anionic surfactant in combination, but the nonionic surfactant HL (hydrophilic- Since the (hydrophobic) balance changes with temperature, a solubilized composition has a cloud point on the high temperature side and a solubilization limit point on the low temperature side. The region between the cloud point and the solubilization limit point is called the solubilization temperature region, and widening this temperature region increases the solubilization amount of the oil agent while expanding the stable temperature region of the generated solubilized composition. It leads to things.
As the solubilized product, it is important that the appearance does not change in the actual use temperature range, and it is preferable to maintain the solubilized state in the temperature range of 0 ° C. to 40 ° C. in order to withstand use in actual life. Furthermore, it is more preferable to keep the solubilized state in the range of −5 ° C. to 50 ° C. in consideration of storage conditions.

The nonionic surfactant of component (A) used in the present invention is a nonionic surfactant having an HLB of 6 to 18. The nonionic surfactant of component (A) has a role of solubilizing the oil agent as component (C) together with the fatty acid salt of component (B).
Here, HLB (hydrophilic / lipophilic balance) is calculated by the Griffin equation (J, Soc, Cosmet, Chem., 1,311 (1949); 5,249 (1953)).

The nonionic surfactant of component (A) must be adjusted to HLB suitable for solubilization in the presence of component (B), and from the viewpoint of expanding the solubilization temperature range, HLB 7 to 12.5 is preferable. HLB8 to 12.3 is more preferable, and HLB9 to 12.0 is more preferable.
In addition, fatty acid esters are preferable in terms of making the cleaner gentler to the skin, and glycerin fatty acid esters, polyglycerin fatty acid esters, polyoxyethylene glycerin fatty acid esters, polyoxyethylene fatty acid esters, polyoxyethylene sorbitan fatty acid esters, and polyoxyethylene sorbitol. It is preferably at least one selected from fatty acid esters.
The nonionic surfactant of component (A) can be used singly or in combination of two or more, but when combining two or more nonionic surfactants, the HLB at the time of mixing them Must be used in such a range.
The HLB at the time of mixing two or more kinds of nonionic surfactants is obtained by averaging the HLB values of the respective nonionic surfactants based on the mixing ratio and is obtained as follows. HLB at the time of mixing 2 or more types of nonionic surfactant is made into the range of the said HLB.

HLB at the time of mixing = Σ (HLBx × Wx) / ΣWx
HLBx represents the HLB value of the nonionic surfactant X.
Wx represents the mass (g) of the nonionic surfactant X having a value of HLBx.

In addition, the nonionic surfactant of component (A) is preferably used by mixing two or more nonionic surfactants having different HLBs from the viewpoint of increasing the solubilization amount of the oil agent and expanding the solubilization temperature range. (A1) a nonionic surfactant having an HLB of 6 to 8, (a2) a nonionic surfactant having a size of 18 or greater than HLB13 and (a3) a nonionic surfactant having a branched alkyl group or 2 or more alkyl groups but having a size of 13 or less. It is preferable to include two or more kinds of nonionic surfactants selected from functional surfactants, (a1) nonionic surfactants of HLB6 to 8 and (a2) nonionic surfactants of greater than HLB13 and 18 or less. 1 type or 2 types or more selected from the above, and (a3) a nonalkyl group having a branched alkyl group or 2 or more alkyl groups that is larger than 13 and less than 13 More preferably containing sex surfactant, at least one member selected from the components (a1), it is further preferred to include one or more selected from one or more and the component (a3) selected from the component (a2).

(A1) Nonionic surfactants of HLB 6 to 8 include, for example, polyglycerol fatty acid esters such as diglyceryl oleate and diglyceryl isostearate; polyglycerols such as diglycerol 2-ethylhexyl ether and isostearyl glyceryl ether Examples include alkyl ethers; polyethylene glycol fatty acid esters such as polyethylene glycol (5) monostearate.
Among these, from the viewpoint of further expanding the solubilization temperature range, it is preferable to include one or more selected from diglyceryl isostearate, diglyceryl oleate and isostearyl glyceryl ether, and diglyceryl isostearate and oleic acid It is more preferable that one or two kinds selected from diglyceryl are included, and it is more preferable that diglyceryl isostearate is included.

(A2) Nonionic surfactants larger than HLB13 and 18 or less include, for example, polyoxyethylene fatty acid esters such as polyoxyethylene (12) monolaurate and polyoxyethylene (20) sorbitan monostearate Polyoxyethylene surfactants such as polyoxyethylene glycerin fatty acid esters such as oxyethylene sorbitan fatty acid ester and polyoxyethylene (20) glyceryl monostearate; Sucrose fatty acid esters such as sucrose stearate; Decylglucoside, etc. And alkyl polyglucosides.
Among these, from the viewpoint of further widening the solubilization temperature range, 1 selected from polyoxyethylene fatty acid esters having 8 to 18 carbon atoms, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene glycerin fatty acid esters and alkyl glucosides. It is preferable to contain one or more species, more preferably one or more selected from polyoxyethylene fatty acid esters and alkyl glucosides, and selected from polyoxyethylene (12) monolaurate and decyl glucoside. It is more preferable that 1 type or 2 types are included.

(A3) In the nonionic surfactant having a branched alkyl group or two or more alkyl groups and having a carbon number of 13 or less, the branched alkyl group preferably has 8 to 18 carbon atoms. For example, octyldodecyl group, hexyl A decyl group, an isostearyl group, etc. are mentioned. The alkyl group is preferably an alkyl group having 8 to 18 carbon atoms.

Specifically, polyoxyethylene fatty acid esters such as polyoxyethylene (12) monoisostearate, polyoxyethylene sorbitan fatty acid esters such as polyoxyethylene (20) sorbitan trioleate, polyoxyethylene tetraoleate (30) Polyoxyethylene sorbitol fatty acid esters such as sorbit, polyoxyethylene alkyl ethers such as polyoxyethylene (20) octyldodecyl ether, polyoxyethylene hydrogenated castor oil derivatives such as polyoxyethylene (60) hydrogenated castor oil monoisolaurate, Examples include polyoxyethylene glycerin fatty acid esters such as polyoxyethylene (8) glyceryl monoisostearate.
Among these, it is preferable to include one or more selected from polyoxyethylene fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene sorbitol fatty acid ester, polyoxyethylene alkyl ether and polyoxyethylene glycerin fatty acid ester. , Polyoxyethylene fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene sorbitol fatty acid ester and polyoxyethylene glycerin fatty acid ester, more preferably one or more selected from polyoxyethylene (12) mono Isostearic acid ester, tetraoleic acid polyoxyethylene (30) sorbit, polyoxyethylene (20) sorbitan trioleate and polyoxye It is further preferred to include one or more selected from alkylene (8) glyceryl monoisostearate.

In the component (A), when one or more selected from the component (a1) and the component (a2) and the component (a3) are included, the component for the component (a3) from the viewpoint of expanding the solubilization temperature range The total content ratio [((a1) + (a2)) / (a3)] of (a1) and the component (a2) is preferably 3.0 or more, more preferably 4.5 or more, and 5.0 or more. More preferably, 10 or less is preferable, 9 or less is more preferable, and 8 or less is more preferable.
In addition, when the component (A) includes the component (a1) and the component (a2), the content ratio of the component (a1) to the component (a2) [(a1) / (a2) from the viewpoint of expanding the solubilization temperature range. ] Is preferably 0.4 or more, more preferably 0.6 or more, still more preferably 0.8 or more, preferably 8 or less, more preferably 2.4 or less, and further preferably 1.6 or less.

The content of the component (A) in the solubilized skin cleanser composition is 7% by mass or more in the total composition and 10% by mass from the viewpoint of expanding the solubilization temperature range while maintaining the solubility of the oily mascara. % Or more, preferably 12% by weight or more, more preferably 14% by weight or more, 30% by weight or less, preferably 25% by weight or less, more preferably 20% by weight or less, and further preferably 18% by weight or less. . Further, the content of the component (A) is 7 to 30% by mass in the total composition, preferably 10 to 25% by mass, more preferably 12 to 20% by mass, and further preferably 14 to 18% by mass.

The fatty acid salt of component (B) has a function of solubilizing component (C) together with component (A). Furthermore, it improves the speed of rinsing and has a role of emphasizing the feeling of bare skin by giving a clean feel to the skin after rinsing.
As a fatty acid salt of a component (B), general formula (1)
R ¹ -COOM ¹ (1)

(Wherein R ¹ represents a linear or branched alkyl group or alkenyl group having 9 to 21 carbon atoms, M ¹ represents an alkali metal, alkaline earth metal, ammonium, ammonium derived from alkanolamine, tris (hydroxymethyl) ) Aminomethane, aminomethylpropanol, aminomethylpropanediol, arginine, lysine, histidine, tryptophan or ornithine)
The thing represented by these is preferable. Further, from the viewpoint of maintaining low temperature stability after long-term storage and improving the speed of rinsing and the feeling of bare skin immediately after rinsing, the carbon number of R ¹ is more preferably 10-20, and more preferably 12-18. Further preferred.

More specifically, there may be mentioned one or more fatty acid salts in which the fatty acid part is selected from lauric acid, myristic acid, palmitic acid, stearic acid, isostearic acid, oleic acid, arachidic acid, and behenic acid. Among these, the fatty acid part is selected from lauric acid, myristic acid, palmitic acid, stearic acid, isostearic acid and oleic acid from the viewpoint of expanding the solubilization temperature range and improving the speed of rinsing and the feeling of bare skin immediately after rinsing. Preferably, the fatty acid part contains at least one or two or more fatty acid salts selected from lauric acid, myristic acid, palmitic acid, stearic acid and isostearic acid. More preferably, the fatty acid part preferably contains three or more fatty acid salts selected from lauric acid, myristic acid, palmitic acid, stearic acid and isostearic acid, and the fatty acid part is lauric acid, myristic acid, palmitic acid, stearic acid And a fatty acid salt of isostearic acid.

Fatty acid salts include: alkali metals such as sodium and potassium; alkaline earth metals such as calcium and magnesium; ammonium; ammonium derived from alkanolamines such as monoethanolamine, diethanolamine and triethanolamine; tris (hydroxymethyl) amino Mention may be made of methane, aminomethylpropanol, aminomethylpropanediol, arginine, lysine, histidine, tryptophan or ornithine.

The fatty acid salt of the component (B) can be present in the composition by, for example, mixing an unneutralized fatty acid and a neutralizing agent in the composition to form a fatty acid salt.
The neutralizing agent is a basic compound, such as sodium hydroxide, potassium hydroxide, triethanolamine, tris (hydroxymethyl) aminomethane, aminomethylpropanol, aminomethylpropanediol, arginine, lysine, histidine, tryptophan, Ornithine and the like.

In general, anionic surfactants are highly irritating when they enter the eyes. On the other hand, in makeup removal, it is easy to get into the eyes due to actions such as gently applying to remove makeup around the eyes, and if there is pain when entering the eyes, makeup cannot be removed sufficiently. Also in the solubilized composition of the present invention, since it contains the anionic surfactant of component (B), it is required not to give strong pain to the eyes. In addition, it is also required to maintain the feeling of bare skin immediately after rinsing speed and rinsing. From these viewpoints, (b1) a fatty acid salt in which the salt is selected from alkali metal, alkaline earth metal, ammonium and ammonium derived from alkanolamine, and (b2) the salt is tris (hydroxymethyl) aminomethane, aminomethylpropanol, amino Preferably it contains a fatty acid salt selected from methylpropanediol, arginine, lysine, histidine, tryptophan and ornithine; (b1) a fatty acid salt wherein the salt is selected from alkali metals, and (b2) a salt which is tris (hydroxymethyl) aminomethane More preferably, a fatty acid salt selected from aminomethyl propanol, aminomethyl propanediol and arginine; (b1) a fatty acid salt selected from potassium and sodium; and (b2) a tris (hydroxymethyl) salt. More preferably comprising a fatty acid salt selected from Minometan and aminomethyl propanediol; (b1) is more preferably more contain a fatty acid potassium salt and (b2) fatty acid tris (hydroxymethyl) aminomethane salt.

The content molar ratio [(b1) / (b2)] of the component (b1) to the component (b2) is 0.3 or more from the viewpoint of reducing pain when entering the eyes while maintaining the rinsing speed. Preferably, it is 0.4 or more, more preferably 0.5 or more, preferably 2.5 or less, more preferably 2.0 or less. More preferably, it is 5 or less.

The content of the component (B) in terms of fatty acid in the solubilized skin cleanser composition is 0 in the total composition from the viewpoint of improving the speed at which no stickiness occurs during rinsing and improving the feeling of bare skin after rinsing. 0.1% by mass or more, preferably 0.6% by mass or more, more preferably 0.9% by mass or more, and 4% by mass or less, preferably 3% by mass or less, from the viewpoint of maintaining low-temperature stability. The mass% or less is more preferable. Further, the content of the component (B) is 0.1 to 4% by mass, preferably 0.6 to 3% by mass, and more preferably 0.9 to 2% by mass in the total composition.
Here, the content in terms of fatty acid means that the content of the fatty acid salt is calculated by converting into the corresponding fatty acid (for example, in the case of the potassium salt of stearic acid, the corresponding fatty acid is stearic acid). .

In the present invention, the content ratio [(B) / (A)] of the component (B) to the component (A) is 0.060 or more, preferably 0.065 or more, from the viewpoint of expanding the solubilization temperature range. 0.070 or more is more preferable, it is 0.35 or less, 0.27 or less is preferable, 0.26 or less is more preferable, and 0.25 or less is more preferable. In addition, let content of a component (B) be a fatty-acid conversion value. Further, the content ratio [(B) / (A)] of the component (B) to the component (A) is 0.06 to 0.35, preferably 0.065 to 0.27, and preferably 0.07 to 0. .26 is more preferable, and 0.07 to 0.25 is more preferable.
In addition, content of said fatty acid conversion is used for content of a component (B).

The oil agent of component (C) acts on makeup stains and has a function of dissolving or dispersing. Any oil agent of component (C) can be used as long as it is used in ordinary detergent compositions.
As such an oil agent, liquid oils usually used in cosmetics can be used. For example, hydrocarbon oils such as isododecane, isohexadecane, liquid paraffin, liquid isoparaffin, hydrogenated polyisobutene, squalane; isostearic acid cholesteryl ester, palmitic acid Isopropyl acid, isopropyl myristate, neopentyl glycol dicaprate, isopropyl isostearate, octadecyl myristate, cetyl 2-ethylhexanoate, isononyl isononanoate, isotridecyl isononanoate, tri (2-ethylhexanoate) glycerin, tri (caprylic acid)・ Ester oil such as capric acid) glycerine; ether oil such as dilauryl ether, dicaprylyl ether, cetyl-1,3-dimethylbutyl ether, nonylphenyl ether Dimethylcyclopolysiloxanes such as octamethylcyclotetrasiloxane and decamethylcyclopentasiloxane; silicone oils such as tris (trimethylsilyl) methylsilane, tetrakis (trimethylsilyl) silane, dimethylpolysiloxane and methylphenylpolysiloxane; isostearyl alcohol, hexyldecanol, octyl Alcohols such as dodecanol, animal and vegetable oils such as olive oil; terpene oil and the like can be used. These can be used alone or in combination of two or more.

As the oil agent of component (C), it is preferable that (c1) an oil agent having a viscosity at 30 ° C. of 15 mPa · s or less is exhibited from the viewpoint of exhibiting high oily mascara solubility and improving the feeling of skin immediately after rinsing. , More preferably 12 mPa · s or less, more preferably 10 mPa · s or less, more preferably 1 mPa · s or more from the viewpoint of suppressing sagging during application and maintaining safety, 3 mPa · s or more is more preferable.
Here, in the measurement of the viscosity, the viscosity at 30 ° C. is measured using a B type viscometer (manufactured by Toki Sangyo Co., Ltd .: TVB-10R type viscometer, measurement conditions: rotor No. 1, 60 rpm, 60 seconds). To do.

Component (c1) is one selected from hydrocarbon oils, ether oils, and silicone oils from the viewpoint of improving long-term storage stability and solubility of oily mascara while maintaining a wide range of solubilization temperatures. It is preferable that 2 or more types are included, it is more preferable that 1 type or 2 types or more chosen from hydrocarbon oil and ether oil are included, and it is further more preferable that at least hydrocarbon oil is included.
From the above viewpoint, the hydrocarbon preferably includes one or more selected from liquid isoparaffin, isododecane and isohexadecane, and more preferably includes one or two selected from isododecane and isohexadecane. .
From the above viewpoint, the ether oil preferably contains one or more selected from dilauryl ether, dicaprylyl ether, and cetyl-1,3-dimethylbutyl ether.
In view of the above, silicone oils include dimethylpolysiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, tris (trimethylsilyl) methylsilane, tetrakis (with a kinematic viscosity (manufacturer's catalog value) of 1.5 to 10 mm ² / s. It preferably contains one or more selected from trimethylsilyl) silane and methylphenylpolysiloxane, and has a viscosity of 1.5-2 mm ² / s dimethylpolysiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, tris It is preferable to include one or more selected from (trimethylsilyl) methylsilane.

The content mass ratio [(c1) / (C)] of the component (c1) in the component (C) is preferably set to be 0.1% from the viewpoint of improving the solubility of the oily mascara and improving the speed at which no slickness occurs during rinsing. 5 or more is preferable, 0.6 or more is more preferable, 0.7 or more is more preferable, 0.99 or less is preferable, 0.97 or less is more preferable, and 0.93 or less is more preferable.

In addition, the oil agent of component (C) preferably contains (c2) a saturated or unsaturated branched alcohol having 15 or more carbon atoms in order to widen the solubilization temperature range. From the viewpoint of extending the solubilization temperature range, the saturated or unsaturated branched alcohol having 15 or more carbon atoms preferably has 16 or more, more preferably 17 or more, still more preferably 18 or more, preferably 22 or less, and 21 or less. Is more preferable, and 20 or less is more preferable. Moreover, it is preferable that saturated branched alcohol is included from a viewpoint of improving long-term storage stability, and it is more preferable that saturated branched monohydric alcohol is included.
Specifically, the saturated or unsaturated branched alcohol having 15 or more carbon atoms is selected from hexyl decanol, isostearyl alcohol and octyldodecanol from the viewpoint of expanding the solubilization temperature range and improving long-term storage stability. It is preferable to include 1 type or 2 types or more, It is more preferable to include 1 type or 2 types selected from isostearyl alcohol and octyldodecanol, It is more preferable to include isostearyl alcohol.

The content ratio [(c2) / (C)] in the component (C2) of the component (c2) is preferably 0.01 or more from the viewpoint of improving the feeling of skin immediately after rinsing and expanding the solubilization temperature range. 0.03 or more is more preferable, 0.07 or more is further preferable, 0.30 or less is preferable, 0.25 or less is more preferable, and 0.22 or less is more preferable.

The content of the component (C) in the skin cleanser composition is 5% by mass or more, preferably 7% by mass or more, preferably 9% by mass or more in the total composition from the viewpoint of improving the solubility of the oily mascara. Is more preferably 10% by mass or more, and 20% by mass or less, preferably 16% by mass or less, more preferably 14% by mass or less, and further preferably 12% by mass or less in order to maintain long-term storage stability. . Further, the content of the component (C) is 5 to 20% by mass in the total composition, preferably 7 to 16% by mass, more preferably 9 to 14% by mass, and further preferably 10 to 12% by mass.

The water-soluble solvent of component (D) forms a water phase together with the water of component (F) and is used while adjusting the HL balance by controlling the solubility of the surfactant in the water phase. It also has the role of suppressing the dryness of the skin afterwards.
The water-soluble solvent of component (D) is not limited as long as it is used for ordinary cosmetics. It preferably contains a water-soluble solvent having an IOB value of 1.5 to 6.0, more preferably contains a water-soluble solvent having a IOB value of 1.6 to 4.0. It is further preferable to contain a reactive solvent. As the water-soluble solvent, one or more selected from monohydric alcohols and polyhydric alcohols are used from the viewpoint of good compatibility with the component (F) and suppressing the dry feeling of the skin after use. Is preferred.
Here, the IOB value is an abbreviation of Inorganic / Organic Balance (inorganic / organic ratio), and is a value representing the ratio of the inorganic value to the organic value, and is an index indicating the degree of polarity of the organic compound. It will be. Specifically, it is expressed as IOB value = inorganic value / organic value. For each of the “inorganic value” and “organic value”, for example, “organic value” is 20 for one carbon atom in the molecule, and “inorganic value” is 100 for one hydroxyl group, "Inorganic value" and "organic value" corresponding to various atoms or functional groups are set, and "inorganic value" and "organic value" of all atoms and functional groups in organic compounds are integrated. Thus, the IOB value of the organic compound can be calculated (see, for example, Yoshio Koda, “Organic Conceptual Diagram-Fundamentals and Applications”, p. 11-17, published by Sankyo Publishing, 1984).

Examples of the component (D) include monohydric alcohols such as ethanol, propanol, isopropanol, butanol, isobutanol; ethylene glycol, propylene glycol, diethylene glycol, dipropylene glycol, 1,3-butylene glycol, 1,4-butylene glycol Glycols such as hexylene glycol and isoprene glycol, glycerols such as glycerin and diglycerin, sugars such as sorbitol, maltitol, maltose, fructose, xylitol, maltotriose, threitol, erythritol, glucose, methyl glucoside, ethyl glucoside And polyhydric alcohols such as sugar derivatives.

Among these, ethanol (IOB: 2.5), propylene glycol (IOB: 3.3), dipropylene glycol (IOB: IOB: from the viewpoint of improving long-term storage stability while maintaining a wide range of solubilization temperature. 1.8), 1,3-butylene glycol (IOB: 2.5), isoprene glycol (IOB: 2.2), glycerin (IOB: 5.0), diglycerin (IOB: 3.5), sorbitol ( 1 type or 2 or more types selected from IOB: 5.0) and maltitol (IOB: 4.4) are preferable, and ethanol, propylene glycol, dipropylene glycol, 1,3-butylene glycol, isoprene glycol and diglycerin are preferred. More preferably, it contains one or more selected, ethanol, propylene glycol, dipro Glycol, and more preferably comprises one or more selected from 1,3-butylene glycol and isoprene glycol.

The content of the component (D) in the solubilized skin cleanser composition is 10% by mass or more and 20% by mass or more in the total composition from the viewpoint of expanding the solubilization temperature range and suppressing stickiness after rinsing. 30 mass% or more is more preferable, 35 mass% or more is more preferable, 60 mass% or less is preferable, 55 mass% or less is preferable, 50 mass% or less is more preferable, and 45 mass% or less is further more preferable. The content of component (D) is 10 to 60% by mass, preferably 20 to 55% by mass, more preferably 30 to 50% by mass, and further preferably 35 to 45% by mass in the total composition.

The content ratio [(D) / (F)] of the component (D) to the component (F) is preferably 0.5 or more from the viewpoint of expanding the solubilization temperature region and suppressing stickiness after rinsing. The above is more preferable, 1.2 or more is further preferable, 4.0 or less is preferable, 2.0 or less is more preferable, and 1.8 or less is more preferable. In addition, the content ratio [(D) / (F)] of the component (D) to the component (F) is preferably 0.5 to 4.0, more preferably 1.0 to 2.0, and 1.2 to 1.8 is more preferable.

Component (E) is a base selected from tris (hydroxymethyl) aminomethane, aminomethylpropanol, aminomethylpropanediol, arginine, lysine, histidine, tryptophan and ornithine.
These bases are formulated not as salt forms (without forming salts such as fatty acid salts with acidic components such as fatty acids) but as present in the composition in free form.
Since the solubilized skin cleansing composition of the present invention contains a fatty acid salt, the pH becomes alkaline. However, under long-term storage in the presence of moisture, the nonionic surfactant is easily hydrolyzed, free fatty acids are produced, and the pH of the system gradually decreases. The change also affects the degree of neutralization of fatty acids, and unneutralized fatty acids are likely to precipitate at low temperatures. In the present invention, the component (E) is further allowed to coexist in the solubilized skin cleansing composition, thereby neutralizing the free fatty acid produced during long-term storage in the presence of moisture and promoting re-dissolution.
In addition, in the fatty acid salt of the component (B), the salt (b2) contains a fatty acid salt selected from tris (hydroxymethyl) aminomethane, aminomethylpropanol, aminomethylpropanediol, arginine, lysine, histidine, tryptophan and ornithine. In the case where the neutralizing agent for forming the fatty acid salt of (b2) blended in the composition is the same substance as the component (E), it is necessary for neutralizing the anionic surfactant. The component exceeding the minute is defined as component (E).
Specifically, in the fatty acid salt of component (B), when the fatty acid is neutralized only with (b2), the amount blended in excess of 1 neutralization equivalent is defined as component (E).
In addition, when using together anionic surfactant (G) other than a component (B), it calculates separately so that it may become 1 neutralization equivalent about the unneutralized component in a component (G), and a component (B) and (G) The quantity which becomes 1 neutralization equivalent in total is calculated | required. Component (E) is defined as the amount blended in excess of one neutralization equivalent of components (B) and (G).
When (b1) and (b2) are used in combination, neutralization of (b1) is given priority. When the neutralization equivalent of (b1) is less than 1, (1 neutralization equivalent-component (b1 The blending amount of the component (b2) is calculated as component (B). The remaining component (b2) in an amount exceeding 1 neutralization equivalent is defined as component (E).

As the base of the component (E), one kind selected from tris (hydroxymethyl) aminomethane, aminomethylpropanol, aminomethylpropanediol and arginine from the viewpoint of widening the solubilization temperature range and improving long-term storage stability. Alternatively, those containing two or more are preferred, those containing one or more selected from tris (hydroxymethyl) aminomethane, aminomethylpropanol and aminomethylpropanediol are more preferred, and tris (hydroxymethyl) aminomethane and It is more preferable to include one or two selected from aminomethylpropanediol, and it is more preferable to include tris (hydroxymethyl) aminomethane.

In the present invention, the content molar ratio of component (B) to component (E) [(B) / (E)] is 7 from the viewpoint of maintaining long-term low-temperature stability and improving the rinsing speed. The following is preferable, 5 or less is more preferable, 3 or less is more preferable, 1.5 or less is more preferable, 0.05 or more is preferable, 0.2 or more is more preferable, and 0.3 or more is more preferable. The molar ratio of component (B) to component (E) [(B) / (E)] is preferably 0.05 to 7, more preferably 0.2 to 5, and further preferably 0.3 to 3. Preferably, 0.3 to 1.5 is even more preferable.
In addition, the molar amount of a component (B) is the molar amount of fatty acid conversion, and represents calculating and converting the molar amount of fatty acid salt into a corresponding fatty acid.

The content of the component (E) in the solubilized skin cleanser composition is 0.1% in the solubilized skin cleanser composition from the viewpoint of maintaining long-term low-temperature stability and improving the speed of rinsing. It is at least 0.5 mass%, preferably at least 0.5 mass%, more preferably at least 0.8 mass%, at most 6 mass%, preferably at most 4 mass%, more preferably at most 3.5 mass%. The content of component (E) is 0.1 to 6% by mass, preferably 0.5 to 4% by mass, and more preferably 0.8 to 3.5% by mass in the total composition.

The content of the water of component (F) is 5% by mass or more in the solubilized skin cleanser composition, preferably 10% by mass or more, from the viewpoint of maintaining a sufficient detergency and washing away cleanly at the time of rinsing. 15 mass% or more is more preferable, it is 40 mass% or less, 35 mass% or less is preferable, and 30 mass% or less is more preferable. The water content of the component (F) is 5 to 40% by mass in the total composition, preferably 10 to 35% by mass, and more preferably 15 to 30% by mass.

The solubilized skin cleansing composition of the present invention further contains an anionic surfactant other than (G) component (B) from the viewpoint of suppressing dryness during rinsing and further improving low-temperature stability. Can do.
The component (G) is not particularly limited as long as it can be used in ordinary skin cleansing agents. For example, alkylbenzene sulfonate, alkane sulfonate, alkenyl sulfonate, alkyl sulfonate, acyl isethionate, alkyl sulfate ester Salt, alkyl ether sulfate, alkyl sulfosuccinate, sulfo fatty acid methyl ester, fatty acid alkanolamide sulfate, monoacylglycerol sulfate, alkyl phosphate ester, polyoxyethylene alkyl ether phosphate, alkylaryl Examples thereof include ether phosphates, fatty acid amide ether phosphates, ether carboxylic acids or salts thereof, and N-acyl amino acid salts.

Of these, alkyl sulfates are used in order to suppress the dry feeling resulting from the crisp skin feel caused by fatty acid scum, improve the feeling of the skin immediately after rinsing, improve the speed of rinsing, and suppress precipitation at low temperatures. 1 or 2 types selected from alkyl ether sulfates, ether carboxylates and N-acyl glutamates, preferably 1 or 2 selected from alkyl ether sulfates and ether carboxylates It is more preferable to include the above, and it is more preferable to include one or more selected from ether carboxylates.

Examples of the alkyl ether sulfate salts include alkyl ether sulfate salts represented by the following general formula (2).
R ² O (CH ₂ CH ₂ O) _n SO ₃ M ² (2)
(In the formula (2), R ² represents an aliphatic hydrocarbon group having 8 to 22 carbon atoms, and M ² is selected from alkali metals, alkaline earth metals, ammonium, alkylammonium, alkanolammonium, and glucammonium. Represents a cation, n represents the average number of moles added, and is 0.5 to 20)

In general formula (2), R ² is preferably an aliphatic hydrocarbon group having 8 to 16 carbon atoms, more preferably an aliphatic hydrocarbon group having 8 to 14 carbon atoms, from the viewpoint of improving low-temperature stability. An aliphatic hydrocarbon group having 10 to 14 carbon atoms is more preferable.
From the same viewpoint as described above, n is preferably 0.5 or more, preferably 12 or less, preferably 5 or less, more preferably 4 or less, and still more preferably 2 or less. A specific range of n is preferably 0.5 to 12, more preferably 0.5 to 5, further preferably 0.5 to 4, and still more preferably 0.5 to 2.
M ² is preferably an alkali metal or ammonium, more preferably an alkali metal, and even more preferably a sodium salt, from the same viewpoint as described above.

Specific examples of the alkyl ether sulfate ester salt include polyoxyethylene (1) sodium lauryl ether sulfate, polyoxyethylene (1) ammonium lauryl ether sulfate, polyoxyethylene (1) sodium myristyl ether sulfate, polyoxyethylene ( 2) 1 type, or 2 or more types chosen from sodium lauryl ether sulfate and polyoxyethylene (2) sodium myristyl ether sulfate are mentioned. Among these, it is preferable to include at least one selected from polyoxyethylene (1) sodium lauryl ether sulfate, polyoxyethylene (1) ammonium lauryl ether sulfate, and polyoxyethylene (2) sodium lauryl ether sulfate. In addition, in this specification, the numerical value in the parenthesis of these compounds means the average added mole number of ethylene oxide.
Moreover, as a commercial item of this alkyl ether sulfate ester salt, for example, Emar 125HP (manufactured by Kao Corporation, polyoxyethylene (1) sodium lauryl ether sulfate), Emar 125A (manufactured by Kao Corporation, polyoxyethylene (1) ammonium lauryl ether sulfate) ), Emar 227 (manufactured by Kao Corporation, polyoxyethylene (2) sodium lauryl ether sulfate) and the like.

Examples of the ether carboxylic acid or a salt thereof include an ether carboxylic acid represented by the following general formula (3) or a salt thereof.
R ³ O (CH ₂ CH ₂ O) _m CH ₂ COOM ³ (3)
(In the formula (3), R ³ represents an alkyl or alkenyl group having 10 to 22 carbon atoms, m represents an average added mole number, and represents a number of 0.5 to 10, M ³ represents a hydrogen atom, an alkali metal Represents alkaline earth metal, ammonium or organic ammonium)

In general formula (3), R ³ is preferably an alkyl group having 12 to 14 carbon atoms from the viewpoint of low-temperature stability.
From the same viewpoint as described above, the average number of moles m of ethylene oxide added is preferably 2 to 5.
M ³ includes hydrogen atom; alkali metal such as sodium and potassium; alkaline earth metal such as calcium and magnesium; ammonium; ammonium derived from alkanolamine such as monoethanolamine, diethanolamine and triethanolamine; arginine, lysine and the like Examples include ammonium derived from basic amino acids. Among these, from the same viewpoint as described above, one or more selected from sodium, potassium, triethanolamine, and arginine are preferable, and one or two selected from sodium and potassium are more preferable. .

Examples of the ether carboxylic acid or a salt thereof include, from the same viewpoint as described above, specifically, polyoxyethylene lauryl ether carboxylic acid or a salt thereof, polyoxyethylene myristyl ether carboxylic acid or a salt thereof, and polyoxyethylene palmityl. It is preferable that 1 type or 2 or more types selected from ether carboxylic acid or its salt is included, Polyoxyethylene lauryl ether carboxylic acid or its salt, and 1 type selected from polyoxyethylene myristyl ether carboxylic acid or its salt Or it is preferable that 2 types are included, and it is still more preferable that polyoxyethylene lauryl ether carboxylic acid or its salt is included.
Moreover, as a commercial item of this ether carboxylic acid or its salt, AKYPO RLM 45CA (made by Kao Corporation), AKYPO LM 26C (made by Kao Corporation) etc. are mentioned, for example.

When component (B) and component (G) are used in combination, the content ratio of component (B) to the total amount of component (B) and component (G) [(B) / ((B) + (G))] is From the viewpoint of improving the feeling of skin immediately after rinsing and improving low-temperature stability while maintaining the speed of rinsing, 0.1 or more is preferable, 0.2 or more is more preferable, and 0.3 or more is more preferable 1 or less is preferable, 0.9 or less is more preferable, and 0.7 or less is more preferable. In addition, let content of a component (B) and a component (G) be an acid conversion value.

In the case where the component (B) and the component (G) are used in combination, the component (B) relative to the component (A) from the viewpoint of improving the low-temperature stability while improving the low-temperature stability while maintaining the speed of rinsing. And the content ratio [((B) + (G)) / (A)] with respect to the total amount of component (G) is preferably 0.11 or more, more preferably 0.12 or more, and further preferably 0.14 or more. 0.70 or less is preferable, 0.60 or less is more preferable, and 0.45 or less is more preferable. In addition, let content of a component (B) and a component (G) be content of acid conversion.

The solubilized skin cleansing composition of the present invention can further contain (H) an organic acid from the viewpoint of adjusting and maintaining the pH of the system within a predetermined range. Moreover, from the viewpoint of improving the antiseptic performance, one or more selected from the group consisting of hydroxycarboxylic acid and dicarboxylic acid is more preferable, and one or more selected from dicarboxylic acid is more preferable. Specific examples of the hydroxycarboxylic acid include glycolic acid, lactic acid, glyceric acid, gluconic acid, pantothenic acid, citric acid and the like. Specific examples of the dicarboxylic acid include malic acid, oxalic acid, malonic acid, maleic acid, succinic acid, glutaric acid, adipic acid and the like.
The content of the component (H) in the solubilized skin cleanser composition can be appropriately contained for the purpose of adjusting the pH to the range described below, but it provides good long-term storage stability and a feeling of skin immediately after rinsing. From the viewpoint of maintenance, it is preferably 0.3% by mass or less, more preferably 0.01 to 0.2% by mass in the solubilized skin cleanser composition.

The solubilized skin cleanser composition of the present invention further includes components used in ordinary cleansing agents, for example, surfactants other than the components (A), (B) and (G), and components other than the component (D). Moisturizer, oil component other than component (C), bactericidal agent, anti-inflammatory agent, preservative, chelating agent, thickener, scrub agent, fragrance, cooling agent, pigment, UV absorber, antioxidant, plant extract Etc. can be contained.

The solubilized skin cleansing composition of the present invention can further contain a cationic surfactant from the viewpoint of improving the smoothness of the skin. The content of the cationic surfactant is preferably 5% by mass or less, more preferably 3% by mass or less, and even more preferably 1% by mass or less in the total composition from the viewpoint of suppressing luster during rinsing. , 0.5% by mass or less is more preferable, and it is more preferable that it is not substantially contained.

The solubilized skin cleansing composition of the present invention comprises the following components (A), (B), (C), (D), (E) and (F):
(A) HLB 6-18 nonionic surfactant 7-30% by mass,
(B) Fatty acid salt 0.1 to 4% by mass in terms of fatty acid,
(C) Oil agent 5-20% by mass,
(D) Water-soluble solvent 10 to 60% by mass,
(E) 0.1 to 6% by mass of a base selected from tris (hydroxymethyl) aminomethane, aminomethylpropanol, aminomethylpropanediol, arginine, lysine, histidine, tryptophan and ornithine,
(F) Water 5-40% by mass
And a content ratio (B) / (A) of component (B) to component (A) is 0.06 to 0.35, and a method for producing a solubilized skin cleanser composition.

The solubilized skin cleansing composition is produced by mixing the blending components by a usual method. As a specific production method, for example, component (A), component (D), component (E), component (F), optionally component (H), component (G), and other water-soluble components are added. Step 1 for mixing while optionally heating, Step 2 for mixing with addition of component (B), component (C) and other oil-soluble components, and optionally heating, and preparation of step 1 Step 3 may be included in which the preparation of Step 2 is added and mixed.

In addition, from the viewpoint of reducing foaming during mixing, it is preferable to include Step 4 in which a part of Component (A) is added in Step 1, and the remainder of Component (A) is added to the preparation in Step 3 and mixed. The step (4) of adding the total amount of the component (A) to the preparation of the step 3 and mixing it without adding the component (A) in the step 1 may be included.
Furthermore, when the component (D) contains a volatile component having a boiling point of 70 ° C. or more, for example, ethanol (component (D)) or a fragrance component, the preparation in step 3 has a boiling point of 70. It is preferable to include the process 4 which mixes the component and volatile component which are more than degree C, and mixes under low temperature.
The term “under low temperature” refers to a temperature at which components having a boiling point of 70 ° C. or higher and volatile components do not evaporate or volatilize, preferably 50 ° C. or lower, more preferably 40 ° C. or lower. From the standpoint of mixing, 10 ° C. or higher is preferable, and 20 ° C. or higher is preferable.

The heating in step 1 is arbitrary, and the heating temperature in the case of heating is preferably 10 ° C. or higher, more preferably 20 ° C. or higher, from the viewpoint of sufficiently dissolving the water phase component without boiling water. In addition, it is preferably 90 ° C. or lower, more preferably 85 ° C. or lower.
The heating in step 2 is arbitrary, and the heating temperature in the case of heating is preferably 50 ° C. or higher, more preferably 55 ° C. or higher, from the viewpoint of sufficiently dissolving the oil-soluble component, and preferably 90 ° C or lower, more preferably 85 ° C or lower.

The solubilized skin cleansing composition of the present invention preferably has a pH of 7 to 11 at 30 ° C., more preferably a pH of 7 to 10, from the viewpoint of reducing skin irritation and improving the feeling of skin immediately after rinsing. A pH of 7 to 9.5 is more preferred, and a pH of 7.5 to 9.5 is even more preferred.
At the time of production, hydrolysis of the nonionic surfactant is likely to occur under long-term storage in the presence of moisture, free fatty acids are generated, and the pH of the system may gradually decrease. 11 is preferable, pH 8 to 10 is more preferable, pH 8 to 9.5 is still more preferable, and pH 8.5 to 9.5 is still more preferable.
Here, pH is measured by the measuring method described in the examples.

In addition, the solubilized skin cleanser composition of the present invention preferably has a viscosity at 30 ° C. of 300 mPa · s or less, from the viewpoint of improving familiarity with makeup stains and improving the solubility of oily mascara, and 150 mPa · S or less is more preferable, 80 mPa · s or less is more preferable, and from the viewpoint of suppressing sagging during application, 5 mPa · s or more is preferable, 10 mPa · s or more is more preferable, and 20 mPa · s or more is more preferable.
Here, in the measurement of the viscosity, the viscosity at 30 ° C. is measured using a B type viscometer (manufactured by Toki Sangyo Co., Ltd .: TVB-10R type viscometer, measurement conditions: rotor No. 1, 60 rpm, 60 seconds). To do.

The solubilized skin cleansing composition of the present invention exhibits a transparent to translucent appearance. Transparency and translucency are evaluated by the evaluation method described in the examples.

The application site of the solubilized skin cleansing composition of the present invention can be used on the skin, preferably the skin excluding the scalp, more preferably any part of the face, body, limbs, etc., more preferably the face. .

The solubilized skin cleanser composition of the present invention is particularly excellent in makeup cosmetics applied to the face because it is excellent in the removal power of makeup cosmetics and provides a feeling of skin after using a facial cleanser after rinsing. It can be suitably used as a makeup / remover / washing agent that can exhibit the effects of a makeup remover and cleanser that cleanses (foundation, mascara, eye shadow, sunscreen, lipstick, etc.).
The solubilized skin cleansing composition of the present invention is suitable for use as a makeup remover.
The solubilized skin cleansing composition of the present invention can be used by, for example, applying it to the skin on which makeup has been applied, and applying it to the skin, followed by washing with water. Moreover, after apply | coating to cotton etc., it can be used by wiping off the skin on which makeup was carried out, and washing off after that.

The present invention further discloses the following composition regarding the embodiment described above.

<1> The following components (A), (B), (C), (D), (E) and (F):
(A) HLB 6-18 nonionic surfactant 7-30% by mass,
(B) Fatty acid salt 0.1 to 4% by mass in terms of fatty acid,
(C) Oil agent 5-20% by mass,
(D) Water-soluble solvent 10 to 60% by mass,
(E) 0.1 to 6% by mass of a base selected from tris (hydroxymethyl) aminomethane, aminomethylpropanol, aminomethylpropanediol, arginine, lysine, histidine, tryptophan and ornithine,
(F) Water 5-40% by mass
A solubilized skin cleanser composition having a content ratio (B) / (A) of component (B) to component (A) of 0.06 to 0.35.

<2> The nonionic surfactant of component (A) is preferably HLB7 to 12.5, more preferably HLB8 to 12.3, and further preferably HL9 to 12.0. Solubilized skin cleanser composition.
<3> The nonionic surfactant of component (A) is preferably (a1) a nonionic surfactant of HLB 6 to 8, (a2) a nonionic surfactant of greater than HLB13 and 18 or less, and (a3) branched It preferably contains two or more nonionic surfactants selected from an alkyl group or a nonionic surfactant of 13 or less than HLB8 having two or more alkyl groups, and (a1) a nonionic interface of HLB6-8 1 type or 2 or more types chosen from activator and (a2) 18 or less nonionic surfactant larger than HLB13, and (a3) larger than 13 HLB8 having a branched alkyl group or 2 or more alkyl groups It is more preferable to contain a surfactant, and one or more selected from the component (a1), one or more selected from the component (a2), and the component (a3 More preferably wherein it contains at least one element selected from the <1> or <2> solubilizing skin cleansing composition.

<4> (a1) The nonionic surfactant of HLB 6-8 preferably contains one or more selected from diglyceryl isostearate, diglyceryl oleate and isostearyl glyceryl ether, and contains diglyceryl isostearate And the solubilized skin cleanser composition according to <3>, more preferably containing one or two selected from diglyceryl oleate, and more preferably containing diglyceryl isostearate.
<5> (a2) A nonionic surfactant having a carbon number greater than 18 and less than 18 is preferably a polyoxyethylene fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene glycerin fatty acid having an alkyl group having 8 to 18 carbon atoms One or more selected from esters and alkyl glucosides, more preferably one or more selected from polyoxyethylene fatty acid esters and alkyl glucosides, polyoxyethylene (12) monolaurate and The solubilized skin cleanser composition according to the above <3> or <4>, further preferably containing one or two selected from decylglucoside.

<6> (a3) A nonionic surfactant having a branched alkyl group or 2 or more alkyl groups greater than or equal to 13 is preferably polyoxyethylene fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene sorbitol 1 type or 2 or more types chosen from fatty acid ester, polyoxyethylene alkyl ether, and polyoxyethylene glycerin fatty acid ester, polyoxyethylene fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene sorbitol fatty acid ester, and polyoxyethylene More preferably, it contains one or more selected from glycerin fatty acid esters, polyoxyethylene (12) monoisostearate, polyoxytetraoleate <3> to <5> more preferably including one or more selected from tylene (30) sorbit, polyoxyethylene (20) sorbitan trioleate, and polyoxyethylene (8) glyceryl monoisostearate. The solubilized skin cleanser composition according to any one of the above.

<7> Component (A) includes one or more selected from component (a1) and component (a2) and component (a3), and component (a1) and component (a2) with respect to component (a3) ) Total content ratio [((a1) + (a2)) / (a3)] is preferably 3.0 or more, more preferably 4.5 or more, and further preferably 5.0 or more, The solubilized skin cleansing composition according to any one of the above <3> to <6>, preferably 10 or less, more preferably 9 or less, and still more preferably 8 or less.
<8> Component (A) includes component (a1) and component (a2), and the content ratio of component (a1) to component (a2) [(a1) / (a2)] is preferably 0.4. It is more preferably 0.6 or more, more preferably 0.8 or more, preferably 8 or less, more preferably 2.4 or less, and still more preferably 1.6 or less, from the above <3> to <7> The solubilized skin cleansing composition according to any one of the above.

The content of <9> component (A) is preferably 10% by mass or more in the total composition, more preferably 12% by mass or more, further preferably 14% by mass or more, and preferably 25% by mass or less, The solubilized skin cleanser composition according to any one of the above items <1> to <8>, more preferably 20% by mass or less, and further preferably 18% by mass or less.

The fatty acid salt of <10> component (B) is preferably the general formula (1)
R ¹ -COOM ¹ (1)
(Wherein R ¹ represents a linear or branched alkyl group or alkenyl group having 9 to 21 carbon atoms, M ¹ represents an alkali metal, alkaline earth metal, ammonium, ammonium derived from alkanolamine, tris (hydroxymethyl) ) Aminomethane, aminomethylpropanol, aminomethylpropanediol, arginine, lysine, histidine, tryptophan or ornithine)
The solubilized skin cleanser composition according to any one of the above items <1> to <9>, wherein

<11> The fatty acid salt of component (B) is preferably a fatty acid salt formed by mixing an unneutralized fatty acid and a neutralizing agent in the composition, and present in the composition. The solubilized skin cleanser composition according to any one of the above <1> to <10>.
<12> Component (B) is preferably (b1) a fatty acid salt wherein the salt is selected from alkali metal, alkaline earth metal, ammonium and ammonium derived from alkanolamine, and (b2) salt is tris (hydroxymethyl) amino A fatty acid salt selected from methane, aminomethylpropanol, aminomethylpropanediol, arginine, lysine, histidine, tryptophan and ornithine; (b1) a fatty acid salt wherein the salt is selected from alkali metals, and (b2) a salt More preferably comprises a fatty acid salt selected from tris (hydroxymethyl) aminomethane, aminomethylpropanol, aminomethylpropanediol and arginine; (b1) a fatty acid salt selected from potassium and sodium, and (b2) a salt Is Tris Roxymethyl) It is more preferable to contain a fatty acid salt selected from aminomethane and aminomethylpropanediol; and (b1) a fatty acid potassium salt and (b2) a fatty acid tris (hydroxymethyl) aminomethane salt, more preferably <1 The solubilized skin cleanser composition according to any one of> to <11>.

<13> The molar ratio [(b1) / (b2)] of the component (b1) to the component (b2) is preferably 0.3 or more, more preferably 0.4 or more, and 0.5 or more. Is more preferable, 2.5 or less is preferable, 2.0 or less is more preferable, and 1.5 or less is more preferable, The solubilized skin cleansing composition of said <12> description.
The content of <14> component (B) is preferably 0.6% by mass or more, more preferably 0.9% by mass or more, and preferably 3% by mass or less in the total composition in terms of fatty acid. The solubilized skin cleanser composition according to any one of <1> to <13>, wherein 2% by mass or less is more preferable.
<15> The content ratio of component (B) to component (A) [(B) / (A)] is preferably 0.065 or more, more preferably 0.070 or more, and 0.27 or less. The solubilized skin cleanser composition according to any one of <1> to <14>, preferably 0.26 or less, and more preferably 0.25 or less.

<16> The oil agent of component (C) is preferably (c1) containing an oil agent having a viscosity at 30 ° C. of 15 mPa · s or less, and one or more selected from hydrocarbon oils, ether oils, and silicone oils Any one of the above <1> to <15>, more preferably one or more selected from hydrocarbon oils and ether oils, more preferably at least hydrocarbon oils. The solubilized skin cleansing composition according to claim 1.
<17> The mass ratio [(c1) / (C)] of the component (c1) in the component (C) is preferably 0.5 or more, more preferably 0.6 or more, and 0.7 The above-described solubilized skin cleansing composition according to <16>, wherein the above is more preferable, preferably 0.99 or less, more preferably 0.97 or less, and further preferably 0.93 or less.

<18> The oil agent of component (C) is preferably one or two selected from (c2) a saturated or unsaturated branched alcohol having 15 or more carbon atoms and selected from hexyl decanol, isostearyl alcohol and octyldodecanol Any one of the above items <1> to <17>, preferably including one or more selected from isostearyl alcohol and octyldodecanol, more preferably including isostearyl alcohol. 2. The solubilized skin cleanser composition according to 1.
<19> The mass ratio [(c2) / (C)] of the component (c2) in the component (C) is preferably 0.01 or more, more preferably 0.03 or more, and 0.07. The above-described solubilized skin cleanser composition according to <18>, wherein the above is more preferable, 0.30 or less is preferable, 0.25 or less is more preferable, and 0.22 or less is more preferable.

The content of <20> component (C) is preferably 7% by mass or more in the total composition, more preferably 9% by mass or more, further preferably 10% by mass or more, and preferably 16% by mass or less, The solubilized skin cleanser composition according to any one of the above items <1> to <19>, more preferably 14% by mass or less, and further preferably 12% by mass or less.
<21> The water-soluble solvent of component (D) is preferably an IOB value of 1.5 to 6, more preferably 1.6 to 4.0, and even more preferably 1.7 to 3.4. The solubilized skin cleansing composition according to any one of <1> to <20>.
<22> The water-soluble solvent of component (D) is preferably one or more selected from monohydric alcohols and polyhydric alcohols, and includes ethanol, propylene glycol, dipropylene glycol, 1,3- It is more preferable to include one or more selected from butylene glycol, isoprene glycol and diglycerin, and one or two selected from ethanol, propylene glycol, dipropylene glycol, 1,3-butylene glycol and isoprene glycol. The solubilized skin cleanser composition according to any one of the above items <1> to <21>, which further preferably contains at least species.

The content of <23> component (D) is preferably 20% by mass or more in the total composition, more preferably 30% by mass or more, further preferably 35% by mass or more, and preferably 55% by mass or less, The solubilized skin cleanser composition according to any one of the above items <1> to <22>, more preferably 50% by mass or less, and further preferably 45% by mass or less.
<24> The content ratio [(D) / (F)] of the component (D) to the component (F) is preferably 0.5 or more, more preferably 1.0 or more, and 1.2 or more. The solubilized skin cleanser composition according to any one of <1> to <23>, more preferably 4 or less, more preferably 2 or less, and further preferably 1.8 or less.

<25> Component (E) is a base selected from tris (hydroxymethyl) aminomethane, aminomethylpropanol, aminomethylpropanediol, arginine, lysine, histidine, tryptophan and ornithine, not in salt form (of fatty acid The solubilized skin cleanser according to any one of the above <1> to <24>, which is formulated as a free form and present in the composition without forming a salt such as an acid component and a fatty acid salt) Composition.
<26> The base of component (E) preferably contains one or more selected from tris (hydroxymethyl) aminomethane, aminomethylpropanol, aminomethylpropanediol and arginine, and contains tris (hydroxymethyl) amino. More preferably, it contains one or more selected from methane, aminomethylpropanol and aminomethylpropanediol, and includes one or two selected from tris (hydroxymethyl) aminomethane and aminomethylpropanediol. The solubilized skin cleanser composition according to any one of the above <1> to <25>, further preferably containing tris (hydroxymethyl) aminomethane.

<27> The molar ratio [(B) / (E)] of component (B) to component (E) is preferably 7 or less, more preferably 5 or less, still more preferably 3 or less. The solubilized skin cleanser composition according to any one of the above <1> to <26>, more preferably 5 or less, more preferably 0.05 or more, more preferably 0.2 or more, and further preferably 0.3 or more. .
The content of <28> component (E) is preferably 0.5% by mass or more in the total composition, more preferably 0.8% by mass or more, and preferably 4% by mass or less, and 3.5% by mass. % Of the solubilized skin cleansing composition according to any one of the above items <1> to <27>.

The water content of <29> component (F) is preferably 10% by mass or more, more preferably 15% by mass or more, preferably 35% by mass or less, and more preferably 30% by mass or less in the total composition. The solubilized skin cleanser composition according to any one of the above items <1> to <28>.
<30> Further, an anionic surfactant other than (G) component (B) is contained, and one or more selected from alkyl sulfate esters, alkyl ether sulfates, ether carboxylates and N-acyl glutamates The solubilization according to any one of the above items <1> to <29>, preferably including two or more, more preferably including one or more selected from alkyl ether sulfates and ether carboxylates. Skin cleansing composition.

<31> Alkyl ether sulfate ester salt is preferably the following general formula (2)
R ² O (CH ₂ CH ₂ O) _n SO ₃ M ² (2)
(In the formula (2), R ² represents an aliphatic hydrocarbon group having 8 to 22 carbon atoms, and M ² is selected from alkali metals, alkaline earth metals, ammonium, alkylammonium, alkanolammonium, and glucammonium. Represents a cation, n represents the average number of moles added, and is 0.5 to 20)
1 or more selected from polyoxyethylene (1) sodium lauryl ether sulfate, polyoxyethylene (1) ammonium lauryl ether sulfate, and polyoxyethylene (2) sodium lauryl ether sulfate More preferably, the solubilized skin cleansing composition according to <30>.

<32> Ether carboxylic acid or a salt thereof is preferably the following general formula (3)
R ³ O (CH ₂ CH ₂ O) _m CH ₂ COOM ³ (3)
(In the formula (3), R ³ represents an alkyl or alkenyl group having 10 to 22 carbon atoms, m represents an average added mole number, and represents a number of 0.5 to 10, M ³ represents a hydrogen atom, an alkali metal Represents alkaline earth metal, ammonium or organic ammonium)
1 or a polyoxyethylene lauryl ether carboxylic acid or a salt thereof, a polyoxyethylene myristyl ether carboxylic acid or a salt thereof, and a polyoxyethylene palmityl ether carboxylic acid or a salt thereof More preferably, it contains two or more, more preferably one or two selected from polyoxyethylene lauryl ether carboxylic acid or a salt thereof, and polyoxyethylene myristyl ether carboxylic acid or a salt thereof, The solubilized skin cleansing composition according to the above <30>, further preferably containing ethylene lauryl ether carboxylic acid or a salt thereof.

<33> Component (B) and component (G) are preferably used in combination, and the content ratio of component (B) to the total amount of component (B) and component (G) [(B) / ((B) + ( G))] is preferably 0.1 or more, more preferably 0.2 or more, further preferably 0.3 or more, preferably 1 or less, more preferably 0.9 or less, and 0.7 or less. The solubilized skin cleanser composition according to any one of the above <30> to <32>, which is more preferable.
<34> The component (B) and the component (G) are preferably used in combination, and the content ratio [((B) + (G)) / of the total amount of the component (B) and the component (G) to the component (A) (A)] is preferably 0.11 or more, more preferably 0.12 or more, further preferably 0.14 or more, preferably 0.70 or less, more preferably 0.60 or less, and 45. The solubilized skin cleanser composition according to any one of <30> to <33>, more preferably 45 or less.

<35> Furthermore, (H) it is preferable to contain an organic acid, one or more selected from the group consisting of hydroxycarboxylic acid and dicarboxylic acid is more preferable, and one or more selected from dicarboxylic acid is more preferable. The solubilized skin cleansing composition according to any one of <1> to <34>.
The solubilized skin according to <35>, wherein the content of <36> component (H) is preferably 0.3% by mass or less and more preferably 0.01 to 0.2% by mass in the total composition. Cleaning composition.
<37> The content of the cationic surfactant is preferably 5% by mass or less, more preferably 3% by mass or less, further preferably 1% by mass or less, and more preferably 0.5% by mass or less in the total composition. The solubilized skin cleanser composition according to any one of the above items <1> to <36>, wherein is more preferable, and it is even more preferable that it is not substantially contained.

<38> At 30 ° C., preferably from pH 7 to 11, more preferably from pH 7 to 10, more preferably from pH 7 to 9.5, and even more preferably from pH 7.5 to 9.5. 37> The solubilized skin cleansing composition according to any one of 37>.
<39> At the time of production, preferably the pH is 8 to 11, more preferably 8 to 10, more preferably 8 to 9.5, and still more preferably 8.5 to 9.5. <1> to <38 > Solubilized skin cleanser composition of any one of>.
<40> The viscosity at 30 ° C. is preferably 300 mPa · s or less, more preferably 150 mPa · s or less, further preferably 80 mPa · s or less, more preferably 5 mPa · s or more, and more preferably 10 mPa · s or more. The solubilized skin cleanser composition according to any one of <1> to <39>, wherein 20 mPa · s or more is more preferable.

<41> The solubilized skin cleanser composition according to any one of <1> to <40>, preferably exhibiting a transparent to translucent appearance.
<42> The application site is preferably skin, more preferably skin excluding the scalp, more preferably any part of the face, body, limbs, etc., and even more preferably applied to the face <1 The solubilized skin cleansing composition according to any one of> to <41>.
<43> The solubilized skin cleansing composition according to any one of the above <1> to <42>, which is used by applying to a skin having a make-up and applying to the skin, followed by washing with water.

<44> The following components (A), (B), (C), (D), (E) and (F):
(A) HLB 6-18 nonionic surfactant 7-30% by mass,
(B) Fatty acid salt 0.1 to 4% by mass in terms of fatty acid,
(C) Oil agent 5-20% by mass,
(D) Water-soluble solvent 10 to 60% by mass,
(E) 0.1 to 6% by mass of a base selected from tris (hydroxymethyl) aminomethane, aminomethylpropanol, aminomethylpropanediol, arginine, lysine, histidine, tryptophan and ornithine,
(F) Water 5-40% by mass
And a solubilized skin cleanser composition obtained by setting the content ratio (B) / (A) of the component (B) to the component (A) as 0.06 to 0.35.

<45> The following components (A), (B), (C), (D), (E) and (F):
(A) HLB 6-18 nonionic surfactant 7-30% by mass,
(B) Fatty acid salt 0.1 to 4% by mass in terms of fatty acid,
(C) Oil agent 5-20% by mass,
(D) Water-soluble solvent 10 to 60% by mass,
(E) 0.1 to 6% by mass of a base selected from tris (hydroxymethyl) aminomethane, aminomethylpropanol, aminomethylpropanediol, arginine, lysine, histidine, tryptophan and ornithine,
(F) Water 5-40% by mass
And a content ratio (B) / (A) of component (B) to component (A) is 0.06 to 0.35.

<46> While adding component (A), component (D), component (E), component (F), optionally component (H), component (G), and other water-soluble components, optionally heating Step 1 to be mixed, Step 2 to which component (B), component (C) and optionally other oil-soluble components are added and mixed while arbitrarily heating, and the preparation of Step 2 to the preparation of Step 1 The method for producing a solubilized skin cleansing composition according to <45>, further comprising Step 3 of mixing.

<47> Next components (A), (B), (C), (D), (E) and (F):
(A) (a1) nonionic surfactant of HLB 6-8, (a2) nonionic surfactant greater than HLB13 and 18 or less, and (a3) greater than 13 HLB8 having a branched alkyl group or two or more alkyl groups. 7 to 30% by mass of a nonionic surfactant having an HLB of 6 to 18 at the time of mixing, which comprises two or more nonionic surfactants selected from nonionic surfactants of
(B) (b1) one or more fatty acid salts wherein the salt is selected from alkali metal, alkaline earth metal, ammonium and ammonium derived from alkanolamine, and (b2) the salt is tris (hydroxymethyl) aminomethane, Fatty acid salt containing one or more fatty acid salts selected from aminomethylpropanol, aminomethylpropanediol, arginine, lysine, histidine, tryptophan and ornithine 0.1 to 4% by mass in terms of fatty acid,
(C) Oil agent 5-20% by mass,
(D) Water-soluble solvent 10 to 60% by mass,
(E) 0.1 to 6% by mass of a base selected from tris (hydroxymethyl) aminomethane, aminomethylpropanol, aminomethylpropanediol, arginine, lysine, histidine, tryptophan and ornithine,
(F) Water 5-40% by mass
Solubilized skin cleanser composition having a pH of 7 to 11 at 30 ° C., wherein the content ratio (B) / (A) of component (B) to component (A) is 0.06 to 0.35 .

<48> The following components (A), (B), (C), (D), (E) and (F):
(A) (a1) one or more selected from nonionic surfactants of HLB 6-8, (a2) one or more selected from nonionic surfactants greater than HLB13 and 18 or less, and ( a3) A nonionic surfactant having a HLB of 6 to 18 at the time of mixing, including 7 to 30% by mass, including a nonionic surfactant having a branched alkyl group or two or more alkyl groups and having a HLB of greater than 13 and 13 or less.
(B) (b1) one or more fatty acid salts wherein the salt is selected from alkali metal, alkaline earth metal, ammonium and ammonium derived from alkanolamine, and (b2) the salt is tris (hydroxymethyl) aminomethane, Fatty acid salt containing one or two fatty acid salts selected from aminomethylpropanol, aminomethylpropanediol, arginine, lysine, histidine, tryptophan and ornithine 0.1 to 4% by mass in terms of fatty acid,
(C) Oil agent 5-20% by mass,
(D) Water-soluble solvent 10 to 60% by mass,
(E) 0.1 to 6% by weight of a base selected from tris (hydroxymethyl) aminomethane, aminomethylpropanol, aminomethylpropanediol and arginine;
(F) Water 5-40% by mass
The content ratio (B) / (A) of component (B) to component (A) is 0.06 to 0.35, and the content of component (b1) to component (b2) of component (B) A solubilized skin cleanser composition having a molar ratio [(b1) / (b2)] of 0.3 to 2.5.

<49> The following components (A), (B), (C), (D), (E) and (F):
(A) (a1) One or more HLB 6-8 nonionic surfactants selected from diglyceryl isostearate, diglyceryl oleate and isostearyl glyceryl ether, (a2) alkyl having 8 to 18 carbon atoms 1 type or 2 or more types chosen from polyoxyethylene fatty acid ester which has group, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene glycerin fatty acid ester, and alkyl glucoside, 1 type chosen from polyoxyethylene fatty acid ester and alkyl glucoside Or one or more selected from two or more HLB13 and 18 or less nonionic surfactants, and (a3) polyoxyethylene fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene sorbite A nonionic surfactant greater than or equal to 13 and less than HLB8 having one or two or more branched alkyl groups or two or more alkyl groups selected from fatty acid esters, polyoxyethylene alkyl ethers and polyoxyethylene glycerin fatty acid esters 7-30% by weight of a nonionic surfactant having an HLB of 6-18 at the time of mixing,
(B) (b1) One or more fatty acid salts selected from alkali metals, ammonium and ammonium derived from alkanolamine, and (b2) salts from tris (hydroxymethyl) aminomethane and aminomethylpropanediol Fatty acid salt containing one or two selected fatty acid salts 0.1 to 4% by mass in terms of fatty acid,
(C) (c1) an oil agent having a viscosity at 30 ° C. of 15 mPa · s or less and (c2) an oil agent containing a saturated or unsaturated branched alcohol having 15 or more carbon atoms, 5 to 20% by mass,
(D) 10 to 60% by mass of a water-soluble solvent having an IOB value of 1.5 to 6;
(E) 0.1 to 6% by mass of one or two bases selected from tris (hydroxymethyl) aminomethane and aminomethylpropanediol;
(F) Water 5-40% by mass
The content ratio (B) / (A) of component (B) to component (A) is 0.06 to 0.35, and component (B) contains component (b1) relative to component (b2) The molar ratio [(b1) / (b2)] is 0.3 to 2.5, and the molar ratio [(B) / (E)] of the component (B) to the component (E) is 0.05. A solubilized skin cleanser composition that is ~ 7.

<50> The following components (A), (B), (C), (D), (E) and (F):
(A) (a1) nonionic surfactant of HLB 6-8, (a2) nonionic surfactant greater than HLB13 and 18 or less, and (a3) greater than 13 HLB8 having a branched alkyl group or two or more alkyl groups. 7 to 30% by mass of a nonionic surfactant having an HLB of 6 to 18 at the time of mixing, which comprises two or more nonionic surfactants selected from nonionic surfactants of
(B) (b1) one or more fatty acid salts wherein the salt is selected from alkali metal, alkaline earth metal, ammonium and ammonium derived from alkanolamine, and (b2) the salt is tris (hydroxymethyl) aminomethane, Fatty acid salt containing one or more fatty acid salts selected from aminomethylpropanol, aminomethylpropanediol, arginine, lysine, histidine, tryptophan and ornithine 0.1 to 4% by mass in terms of fatty acid,
(C) Oil agent 5-20% by mass,
(D) Water-soluble solvent 10 to 60% by mass,
(E) 0.1 to 6% by mass of a base selected from tris (hydroxymethyl) aminomethane, aminomethylpropanol, aminomethylpropanediol, arginine, lysine, histidine, tryptophan and ornithine,
(F) Water 5-40% by mass
A solubilized skin cleanser composition having a pH of 7 to 11 at 30 ° C., wherein the content ratio (B) / (A) of component (B) to component (A) is 0.06 to 0.35 object.

<51> Next components (A), (B), (C), (D), (E) and (F):
(A) (a1) one or more selected from nonionic surfactants of HLB 6-8, (a2) one or more selected from nonionic surfactants greater than HLB13 and 18 or less, and ( a3) A nonionic surfactant having a HLB of 6 to 18 at the time of mixing, including 7 to 30% by mass, including a nonionic surfactant having a branched alkyl group or two or more alkyl groups and having a HLB of greater than 13 and 13 or less.
(B) (b1) one or more fatty acid salts wherein the salt is selected from alkali metal, alkaline earth metal, ammonium and ammonium derived from alkanolamine, and (b2) the salt is tris (hydroxymethyl) aminomethane, Fatty acid salt containing one or two fatty acid salts selected from aminomethylpropanol, aminomethylpropanediol, arginine, lysine, histidine, tryptophan and ornithine 0.1 to 4% by mass in terms of fatty acid,
(C) Oil agent 5-20% by mass,
(D) Water-soluble solvent 10 to 60% by mass,
(E) 0.1 to 6% by weight of a base selected from tris (hydroxymethyl) aminomethane, aminomethylpropanol, aminomethylpropanediol and arginine;
(F) Water 5-40% by mass
And the content ratio (B) / (A) of the component (B) to the component (A) is 0.06 to 0.35, and the content mole of the component (b1) to the component (b2) of the component (B) A solubilized skin cleanser composition having a ratio [(b1) / (b2)] of 0.3 to 2.5.

<52> Next components (A), (B), (C), (D), (E) and (F):
(A) (a1) One or more HLB 6-8 nonionic surfactants selected from diglyceryl isostearate, diglyceryl oleate and isostearyl glyceryl ether, (a2) alkyl having 8 to 18 carbon atoms 1 type or 2 or more types chosen from polyoxyethylene fatty acid ester which has group, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene glycerin fatty acid ester, and alkyl glucoside, 1 type chosen from polyoxyethylene fatty acid ester and alkyl glucoside Or one or more selected from two or more HLB13 and 18 or less nonionic surfactants, and (a3) polyoxyethylene fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene sorbite A nonionic surfactant greater than or equal to 13 and less than HLB8 having one or two or more branched alkyl groups or two or more alkyl groups selected from fatty acid esters, polyoxyethylene alkyl ethers and polyoxyethylene glycerin fatty acid esters 7-30% by weight of a nonionic surfactant having an HLB of 6-18 at the time of mixing,
(B) (b1) One or more fatty acid salts selected from alkali metals, ammonium and ammonium derived from alkanolamine, and (b2) salts from tris (hydroxymethyl) aminomethane and aminomethylpropanediol Fatty acid salt containing one or two selected fatty acid salts 0.1 to 4% by mass in terms of fatty acid,
(C) (c1) an oil agent having a viscosity at 30 ° C. of 15 mPa · s or less and (c2) an oil agent containing a saturated or unsaturated branched alcohol having 15 or more carbon atoms, 5 to 20% by mass,
(D) 10 to 60% by mass of a water-soluble solvent having an IOB value of 1.5 to 6;
(E) 0.1 to 6% by mass of one or two bases selected from tris (hydroxymethyl) aminomethane and aminomethylpropanediol;
(F) Water 5-40% by mass
And the content ratio (B) / (A) of component (B) to component (A) is 0.06 to 0.35, and component (B) contains mol of component (b1) relative to component (b2) The ratio [(b1) / (b2)] is 0.3 to 2.5, and the molar ratio of component (B) to component (E) [(B) / (E)] is 0.05 to 7 A solubilized skin cleanser composition obtained as

<53> The following components (A), (B), (C), (D), (E) and (F):
(A) (a1) nonionic surfactant of HLB 6-8, (a2) nonionic surfactant greater than HLB13 and 18 or less, and (a3) greater than 13 HLB8 having a branched alkyl group or two or more alkyl groups. 7 to 30% by mass of a nonionic surfactant having an HLB of 6 to 18 at the time of mixing, which comprises two or more nonionic surfactants selected from nonionic surfactants of
(B) (b1) one or more fatty acid salts wherein the salt is selected from alkali metal, alkaline earth metal, ammonium and ammonium derived from alkanolamine, and (b2) the salt is tris (hydroxymethyl) aminomethane, Fatty acid salt containing one or more fatty acid salts selected from aminomethylpropanol, aminomethylpropanediol, arginine, lysine, histidine, tryptophan and ornithine 0.1 to 4% by mass in terms of fatty acid,
(C) Oil agent 5-20% by mass,
(D) Water-soluble solvent 10 to 60% by mass,
(E) 0.1 to 6% by mass of a base selected from tris (hydroxymethyl) aminomethane, aminomethylpropanol, aminomethylpropanediol, arginine, lysine, histidine, tryptophan and ornithine,
(F) Water 5-40% by mass
And a content ratio (B) / (A) of component (B) to component (A) is 0.06 to 0.35.

<54> Next components (A), (B), (C), (D), (E) and (F):
(A) (a1) one or more selected from nonionic surfactants of HLB 6-8, (a2) one or more selected from nonionic surfactants greater than HLB13 and 18 or less, and ( a3) A nonionic surfactant having a HLB of 6 to 18 at the time of mixing, including 7 to 30% by mass, including a nonionic surfactant having a branched alkyl group or two or more alkyl groups and having a HLB of greater than 13 and 13 or less.
(B) (b1) one or more fatty acid salts wherein the salt is selected from alkali metal, alkaline earth metal, ammonium and ammonium derived from alkanolamine, and (b2) the salt is tris (hydroxymethyl) aminomethane, Fatty acid salt containing one or two fatty acid salts selected from aminomethylpropanol, aminomethylpropanediol, arginine, lysine, histidine, tryptophan and ornithine 0.1 to 4% by mass in terms of fatty acid,
(C) Oil agent 5-20% by mass,
(D) Water-soluble solvent 10 to 60% by mass,
(E) 0.1 to 6% by weight of a base selected from tris (hydroxymethyl) aminomethane, aminomethylpropanol, aminomethylpropanediol and arginine;
(F) Water 5-40% by mass
The content ratio (B) / (A) of component (B) to component (A) is 0.06 to 0.35, and the content of component (b1) to component (b2) of component (B) A method for producing a solubilized skin cleansing composition, wherein the molar ratio [(b1) / (b2)] is 0.3 to 2.5.

<55> Next components (A), (B), (C), (D), (E) and (F):
(A) (a1) One or more HLB 6-8 nonionic surfactants selected from diglyceryl isostearate, diglyceryl oleate and isostearyl glyceryl ether, (a2) alkyl having 8 to 18 carbon atoms 1 type or 2 or more types chosen from polyoxyethylene fatty acid ester which has group, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene glycerin fatty acid ester, and alkyl glucoside, 1 type chosen from polyoxyethylene fatty acid ester and alkyl glucoside Or one or more selected from two or more HLB13 and 18 or less nonionic surfactants, and (a3) polyoxyethylene fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene sorbite A nonionic surfactant greater than or equal to 13 and less than HLB8 having one or two or more branched alkyl groups or two or more alkyl groups selected from fatty acid esters, polyoxyethylene alkyl ethers and polyoxyethylene glycerin fatty acid esters 7-30% by weight of a nonionic surfactant having an HLB of 6-18 at the time of mixing,
(B) (b1) One or more fatty acid salts selected from alkali metals, ammonium and ammonium derived from alkanolamine, and (b2) salts from tris (hydroxymethyl) aminomethane and aminomethylpropanediol Fatty acid salt containing one or two selected fatty acid salts 0.1 to 4% by mass in terms of fatty acid,
(C) (c1) an oil agent having a viscosity at 30 ° C. of 15 mPa · s or less and (c2) an oil agent containing a saturated or unsaturated branched alcohol having 15 or more carbon atoms, 5 to 20% by mass,
(D) 10 to 60% by mass of a water-soluble solvent having an IOB value of 1.5 to 6;
(E) 0.1 to 6% by mass of one or two bases selected from tris (hydroxymethyl) aminomethane and aminomethylpropanediol;
(F) Water 5-40% by mass
The content ratio (B) / (A) of component (B) to component (A) is 0.06 to 0.35, and component (B) is contained in component (b1) relative to component (b2) The molar ratio [(b1) / (b2)] is 0.3 to 2.5, and the molar ratio [(B) / (E)] of the component (B) to the component (E) is 0.05. A method for producing a solubilized skin cleanser composition, which is ˜7.

Examples 1 to 36, Comparative Examples 1 to 9
Manufactures solubilized skin cleansing compositions having the compositions shown in Tables 1 to 4, immediately after appearance, immediately after pH, immediately after temperature stability (solubilization temperature region), solubility of oily mascara, speed of rinsing, and rinsing Immediate skin feel and temperature stability after long-term storage (solubilization temperature region) were evaluated. In Examples 27 to 36, the level of pain when entering the eyes was evaluated. The results are also shown in Tables 1 to 4. In addition, all content described in a table | surface is an effective amount display.

The following raw materials were used as the annotated components described in the table.
* 1: Pearl Ream 4 (manufactured by NOF Corporation, viscosity 5.9 mPa · s)
* 2: Calcoal 200GD (manufactured by Kao Corporation, viscosity 41.7 mPa · s)
* 3: Amisoft LA-D (Ajinomoto Healthy Supply)
* 4: Amisoft HA-P (Ajinomoto Healthy Supply)
* 5: Amisoft CK-22 (Ajinomoto Healthy Supply)
* 6: Amisoft MK-11 (Ajinomoto Healthy Supply)
* 7: Akipo LM-26SD (Kao Corporation)
* 8: AG-10LK (manufactured by Kao Corporation, HLB17)
* 9: Emanon 1112 (manufactured by Kao Corporation, HLB 13.7)
* 10: Cosmall 41V (Nisshin Oilio Group, HLB8)
* 11: Rheodor 430V (manufactured by Kao Corporation, HLB10.5)

(Production method)
Step 1: Add components 23 to 25 and component 27 to component 29 and mix uniformly at 25 ° C. and 200 rpm.
Step 2: Ingredients 10 to 18 are added to the preparation of Step 1 and mixed uniformly at 25 ° C. and 200 rpm.
Step 3: Components 1 to 9 are mixed and dissolved by heating at 80 ° C. with stirring.
Step 4: Add Step 3 preparation to Step 2 preparation and cool to 30 ° C. with stirring.
Step 5: Components 19 to 22, Component 26, and Component 28 were added to the preparation of Step 4 and mixed uniformly at 200 rpm to obtain a solubilized skin cleanser composition.

(Evaluation method)
(1) Appearance immediately after:
Immediately after production, 40 mL of each skin cleanser composition is placed in a 50 mL sample bottle (Tokyo Glass Instrument Co., Ltd .: Standard Bottle # 6), and is visually observed to be transparent, translucent, cloudy, separated, or precipitated. It was evaluated whether it is.
At this time, for transparent, translucent and cloudy, the bar code on the side of the sample bottle has a bar and space width in the range of 0.4 to 1.0mm, and the 2.0mm square is black. The printed board was placed, and it was determined as follows according to how the bar code and numbers looked when visually observed from the opposite side.
“Transparent” means that the bar code lines and numbers can be clearly recognized.
“Semi-transparent” means that the barcode line can be recognized but the numbers cannot be recognized.
“White turbidity” refers to a state in which barcode lines and numbers cannot be recognized.
Moreover, the thing which phase separation and precipitation of the content were seen in each skin cleaning composition was each recognized as isolation | separation and precipitation.

(2) Immediately after pH:
Immediately after production, the stock solution of each skin cleanser composition was measured at 30 ° C. with a pH meter (manufactured by Horiba, Ltd .: desktop pH / water quality analyzer LAQUA F-72T). At this time, measurement is performed while gently stirring for 15 minutes until the value becomes stable, and a stable numerical value after stirring is measured.

(3) Immediate temperature stability (solubilization temperature region):
(3-1) Measurement of cloud point:
In a 50 mL sample bottle (manufactured by Tokyo Glass Instruments Co., Ltd .: Standard bottle # 6), 30 mL of each skin cleansing composition and a stirrer are placed and heated in a 70 ° C. water bath until it becomes cloudy. Then removed from the water bath. In an environment of 25 ° C., the sample bottle is cooled on a stirrer while stirring the stirring bar at 350 rpm. Here, the temperature at which the film became transparent to translucent was taken as the cloud point.

(3-2) Measurement of solubilization limit point:
40 mL of each skin cleansing composition is placed in a 50 mL sample bottle (Tokyo Glass Instrument Co., Ltd .: standard bottle # 6) and stored in a thermostatic bath at 5 ° C., 0 ° C., and −5 ° C. for 12 hours. Thereafter, the appearance at each temperature was visually observed to evaluate whether it was transparent, translucent, cloudy, two-layer separation, or precipitation. The lowest value among the temperatures at which a transparent to translucent appearance could be maintained was taken as the solubilization limit point.

(4) Solubility of oily mascara:
On a glass plate (MICRO SLIDE GLASS, manufactured by MATSANAMI), 3 mg of waterproof mascara (Maybelin Magnum Volume Mascara Waterproof Type) is uniformly applied in a circular shape with a diameter of 12 mm. After drying for 8 hours, 0.03 g of each skin cleansing composition is added dropwise, and applied at a speed of drawing a circle once per second with a finger pressure of about 100 g. After 50 times of acclimatization, the mascara melted condition and the remaining condition were observed and evaluated according to the following criteria.
(Criteria)
5: The mascara was completely dissolved (no mascara left on the glass plate).
4: Mascara was almost dissolved (less than 10% of mascara remains on the glass plate).
3; Half of the mascara was dissolved (more than 10% to 50% of mascara remains on the glass plate).
2; Mascara slightly dissolved (more than 50% to 90% of mascara remains on the glass plate).
1; mascara hardly dissolves (more than 90% mascara remains on the glass plate)

(5) Rinsing speed:
Five professional panelists actually used each skin cleansing composition on their face and rinsed the agent. Based on the number of people who evaluated facial cleansing (Kao Co., Ltd .: Biore Skin Care Facial Cleansing) as the index of evaluation, and that the speed at which each skin cleansing composition was rinsed off was equivalent to that of facial cleansing. The speed of rinsing was evaluated.
(Evaluation criteria)
5: Five out of five people evaluated that rinsing was fast.
4: Four out of five people rated the rinse as fast.
3: Three out of five people evaluated that rinsing was fast.
2: Two out of five people evaluated that rinsing was fast.
1; 1 out of 5 people evaluated that rinsing was fast.

(6) Skin feeling immediately after rinsing:
Five professional panelists actually used each skin cleansing composition on their face and rinsed the agent. As an index of evaluation, facial cleanser (Kao Co., Ltd .: Biore Skin Care Facial Cleanser) is used, and after rinsing (the skin before being wiped with a towel is still wet), the skin feels tight (feeling of the skin) Based on the number of people evaluated to be equivalent to a face wash, the skin feeling immediately after rinsing was evaluated.
(Evaluation criteria)
5: Five out of five people evaluated that they felt a feeling of bare skin.
4: Evaluated that 4 out of 5 people felt a feeling of bare skin.
3: Three out of five people evaluated that they felt a feeling of bare skin.
2: Evaluated that 2 out of 5 people felt a feeling of bare skin.
1: It was evaluated that 1 or less of 5 people felt a feeling of bare skin.

(7) Temperature stability after long-term storage (solubilization temperature region):
The temperature stability after long-term storage was evaluated. Specifically, in order to accelerate the deterioration, 180 ml of each skin cleansing composition was put in a PET container (manufactured by Yoshino Kogyo Co., Ltd .: AL-CLO6A case 200M NB527C oil) and stored at 50 ° C. for one month. The cloud point was measured by the same method as (3-1). Further, regarding the solubilization limit point, after accelerating the deterioration, the solubilization limit point was measured by the same method as in (3-2) above.

(8) Pain level when it enters the eyes:
Assuming to drop mascara by three specialized panelists, after applying each skin cleanser composition around the eyelashes and around the eyes for 20 seconds, opening eyes and blinking 10 times, The level of pain was evaluated. 4 points that feel almost no pain, 3 points that feel very weak pain, 2 points that feel slightly weak pain, and 1 point that feels weak pain. As evaluated. In addition, when using the facial cleanser (manufactured by Kao Corporation: Biore Skin Care Facial Cleanser), very strong pain was felt.

Claims

The following components (A), (B), (C), (D), (E) and (F):
(A) HLB 6-18 nonionic surfactant 7-30% by mass,
(B) Fatty acid salt 0.1 to 4% by mass in terms of fatty acid,
(C) Oil agent 5-20% by mass,
(D) Water-soluble solvent 10 to 60% by mass,
(E) 0.1 to 6% by mass of a base selected from tris (hydroxymethyl) aminomethane, aminomethylpropanol, aminomethylpropanediol, arginine, lysine, histidine, tryptophan and ornithine,
(F) Water 5-40% by mass
A solubilized skin cleanser composition having a content ratio (B) / (A) of component (B) to component (A) of 0.06 to 0.35.
The solubilized skin cleanser composition according to claim 1, wherein the component (C) comprises (c1) an oil having a viscosity at 30 ° C of 15 mPa · s or less.
The solubilized skin cleanser composition according to claim 1 or 2, wherein component (C) comprises (c2) a saturated or unsaturated branched alcohol having 15 or more carbon atoms.
Component (A) is (a1) a nonionic surfactant of HLB6-8, (a2) a nonionic surfactant greater than HLB13 and 18 or less, and (a3) an HLB8 having a branched alkyl group or two or more alkyl groups. The solubilized skin cleanser composition according to any one of claims 1 to 3, which is at least two nonionic surfactants selected from 13 or less nonionic surfactants.
The solubilized skin cleanser composition according to any one of claims 1 to 4, wherein the content molar ratio of component (B) to component (E) [(B) / (E)] is 7 or less.
Component (B) includes (b1) a fatty acid salt whose salt is selected from potassium and sodium, and (b2) a fatty acid salt whose salt is selected from tris (hydroxymethyl) aminomethane and aminomethylpropanediol, and component (b2) The solubilized skin cleanser composition according to any one of claims 1 to 5, wherein the mass ratio of component (b1) to ([b1) / (b2)] is 0.3 to 2.5.
The solubilized skin cleanser composition according to any one of claims 1 to 6, which has a pH of 7 to 11 at 30 ° C.
The solubilized skin cleanser composition according to any one of claims 1 to 7, wherein the component (A) is a fatty acid ester.
The following components (A), (B), (C), (D), (E) and (F):
(A) HLB 6-18 nonionic surfactant 7-30% by mass,
(B) Fatty acid salt 0.1 to 4% by mass in terms of fatty acid,
(C) Oil agent 5-20% by mass,
(D) Water-soluble solvent 10 to 60% by mass,
(E) 0.1 to 6% by mass of a base selected from tris (hydroxymethyl) aminomethane, aminomethylpropanol, aminomethylpropanediol, arginine, lysine, histidine, tryptophan and ornithine,
(F) Water 5-40% by mass
And a solubilized skin cleanser composition obtained by setting the content ratio (B) / (A) of component (B) to component (A) as 0.06 to 0.35.
The following components (A), (B), (C), (D), (E) and (F):
(A) HLB 6-18 nonionic surfactant 7-30% by mass,
(B) Fatty acid salt 0.1 to 4% by mass in terms of fatty acid,
(C) Oil agent 5-20% by mass,
(D) Water-soluble solvent 10-60% by mass,
(E) 0.1 to 6% by mass of a base selected from tris (hydroxymethyl) aminomethane, aminomethylpropanol, aminomethylpropanediol, arginine, lysine, histidine, tryptophan and ornithine,
(F) Water 5-40% by mass
And a content ratio (B) / (A) of the component (B) to the component (A) is 0.06 to 0.35.
Use of the solubilized skin cleanser composition according to any one of claims 1 to 9 as a makeup remover.