WO2017150406A1

WO2017150406A1 - Cleansing cosmetic

Info

Publication number: WO2017150406A1
Application number: PCT/JP2017/007317
Authority: WO
Inventors: 真由島谷; 里香嶋岡; 宏一長井; 松尾　玲
Original assignee: 株式会社資生堂
Priority date: 2016-02-29
Filing date: 2017-02-27
Publication date: 2017-09-08
Also published as: TW201731484A; KR20180115740A; JP6045734B1; CN108697597A; HK1254937A1; SG11201807137UA; CN108697597B; JP2017154982A

Abstract

The purpose of the present invention is to provide a low-viscosity cleansing cosmetic which has excellent stability under a low temperature or high temperature condition even in the form of a nonaqueous cosmetic containing only a trace amount of water or not containing water, and which also has excellent usability such as wash-off properties. The present invention pertains to a cleansing cosmetic characterized by comprising: (A) 70-95 mass% of an oil that is in the form of liquid at normal temperature; (B) at least one selected from polyoxyethylene sorbeth-30 tetraisostearate and polyoxyethylene sorbeth-30 tetraoleate; and (C) a polyoxyethylene glyceryl ether fatty acid ester, wherein a nonpolar hydrocarbon oil accounts for not less than 40 mass% of the component (A), and the blended amount ratio [(C)/(B)] between the component (B) and the component (C) is within a range of 0.20-0.70.

Description

Cleansing cosmetics

The present invention relates to cleansing cosmetics. More specifically, the present invention relates to a cleansing cosmetic having a low viscosity, which has excellent storage stability and good usability such as washing out properties.

Cleansing cosmetics such as makeup cleansing oil are used for the purpose of removing make-up cosmetics, and various improvements are being considered for the cleansing cosmetics from the viewpoints of usability, cleansing effect improvement and storage stability. .

However, cleansing cosmetics that do not contain water or contain a small amount of water may cause problems such as cloudiness or precipitation due to long-term storage or storage under high temperature conditions. In particular, in low-viscosity cleansing cosmetics containing a small amount of water, the stability depends on the amount of water present in the cosmetics, and it has been found that when water evaporates during storage, white turbidity and precipitation occur. . Conventionally, the stability was maintained by devising the container to suppress the volatilization of water.

In Patent Document 1, white turbidity and precipitation are caused even by long-term storage or storage under high temperature conditions by blending room temperature liquid oil, a specific nonionic surfactant and a specific dihydric alcohol in a specific ratio. In addition, it is described that a skin cleanser having good usability was obtained. However, in order to obtain sufficient storage stability, a specific dihydric alcohol is indispensable. When a detergent containing one kind of nonionic surfactant having HLB = 4 to 15 is used, the washability is insufficient. was there.

On the other hand, Patent Document 2 discloses a specific polyhydric alcohol triester (PEG-20 glyceryl triisostearate) and a specific sugar alcohol fatty acid tetraester (Solves-30 tetraisostearate). Stabilized by blending the ester ratio in the range of 1.0 to 3.0 (2.0 to 2.2 in the examples), 30 to 70% by weight of liquid oil, and up to 5% by weight of water. Make-up removal personal care compositions are described, which are said to exhibit excellent makeup removal effects under wet or wet conditions.
The composition described in Patent Document 2 contains 5% by weight or less of water, but no investigation has been made on the phenomenon that water volatilizes and becomes unstable during storage. In addition, the oil component blended in Patent Document 2 is described as natural or synthetic esters, hydrocarbons, and silicone oils (paragraph 0033), and is not particularly limited. In some cases, phase separation occurred during storage.

Patent Document 3 discloses an oil-based cleaning material containing (a) liquid oil, (b) a nonionic surfactant, (c) a water-soluble reducing agent, and (d) water as essential components. In order to prevent odor due to deterioration of liquid oil or surfactant, it is necessary to add a water-soluble reducing agent.

JP 2005-68082 A Japanese Patent No. 5361730 JP 2003-95919 A

The present invention has been made in view of the above circumstances, and by reexamining the components constituting cleansing cosmetics, stability does not depend on the amount of moisture present, or even in non-aqueous systems that do not contain water, the temperature is low. Alternatively, it is an object of the present invention to provide a low-viscosity cleansing cosmetic that is excellent in stability under high-temperature conditions and that is excellent in usability such as washing out properties.

As a result of intensive studies to achieve the above-mentioned problems, the present inventors combined two types of nonionic surfactants at a blending ratio different from that of the prior art, and selected the oil content composition. The present inventors have found that the problem can be solved and have completed the present invention.

That is, the present invention
(A) 70 to 95% by mass of liquid oil at room temperature;
(B) at least one selected from tetraoxystearic acid polyoxyethylene solves-30 and tetraoleic acid polyoxyethylene solves-30; and (C) a polyoxyethylene glyceryl ether fatty acid ester,
Nonpolar hydrocarbon oil accounts for 40% by mass or more of the component (A),
The total blending amount of the component (B) and the component (C) is 5 to 15% by mass, and the blending ratio [(C) / (B)] of both is in the range of 0.20 to 0.70. Within
Provided is a cleansing cosmetic characterized in that the water content is 1% by mass or less.

In the cleansing cosmetic of the present invention, it does not depend on the amount of water present in the cosmetic, or even in an anhydrous system that does not contain water, it does not cause white turbidity or precipitation over a long period of time under low or high temperature conditions. Have sex. Moreover, the cleansing cosmetic composition of the present invention has a low viscosity and has excellent usability that can be washed out well. Furthermore, if it is set as the composition of the cleansing cosmetics of this invention, the water-soluble reducing agent for preventing an odor is also unnecessary.

Hereinafter, the present invention will be described in detail.
The cleansing cosmetic composition of the present invention comprises (A) an oil component that is liquid at room temperature, (B) at least one selected from polyoxyethylene solves-30 tetraisostearate and polyoxyethylene solves 30 tetraoleate, and ( C) Contains polyoxyethylene glyceryl ether fatty acid ester.

(A) The oil component that is liquid at room temperature used in the present invention is not particularly limited as long as it is an oil component that is usually used in cosmetics and is liquid at room temperature (about 25 ° C.).

Specifically, examples of the silicone oil include chain silicone oils such as dimethylpolysiloxane, methylphenylpolysiloxane, and methylhydrogenpolysiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane. Examples thereof include cyclic silicone oil.

Examples of polar oils include glyceryl diisostearate, diisostearyl malate, tripropylene glycol pivalate, glyceryl tri-2-ethylhexanoate, cetyl octanoate, hexyl laurate, isopropyl myristate, octyl palmitate, and isocetyl stearate. And ester oils such as isopropyl isostearate, octyl isopalmitate, isodecyl isostearate, 2-ethylhexyl succinate, diethyl sebacate, cetyl ethylhexanoate, and the like.

Examples of the nonpolar oil include hydrocarbon oils such as mineral oil (liquid paraffin, paraffin), squalane, squalene, isododecane, and isohexadecane.

In the cleansing cosmetic of the present invention, the blending amount of the oil component (A) at room temperature is 70 to 95% by mass, preferably 75 to 85% by mass with respect to the total amount of the cosmetic. If it is less than 70% by mass, it is not preferable because the feeling of use peculiar to oil is lost, for example, the feeling when applied to the skin becomes heavy. If it exceeds 95% by mass, the ease of washing off with water may be impaired. This is not preferable.

In the present invention, one or more kinds of oil components which are liquid at room temperature as exemplified above can be arbitrarily selected and used. However, it is necessary to prepare so that nonpolar hydrocarbon oil may occupy 40 mass% or more of a component (A), Preferably it is 60 mass% or more, More preferably, it is 70 mass% or more. When the ratio of the nonpolar hydrocarbon oil in the component (A) is less than 40% by mass, phase separation may occur and the like may become unstable.

The component (B) in the cleansing cosmetic of the present invention is at least one selected from tetraisostearate polyoxyethylene solves-30 and tetraoleate polyoxyethylene solves-30.

The tetraisostearic acid polyoxyethylene solves-30 and the tetraoleic acid polyoxyethylene solves-30 have a structure represented by the following general formula (I).

The tetraisostearic acid polyoxyethylene solves-30 is a compound in which -OCOR is an isostearic acid residue and ethylene oxide addition number (a + b + c + d + e + f) is 30 in the above general formula (I), and the display name (INCI name) is Solves-30 tetraisostearate.

Tetraoleic acid polyoxyethylene solves-30 is a compound in which -OCOR is an oleic acid residue and ethylene oxide addition number (a + b + c + d + e + f) is 30 in the general formula (I), and the display name (INCI name) is tetra. Solves-30 oleate.

The cleansing cosmetic composition of the present invention may contain either tetraisostearate polyoxyethylene solves-30, tetraoleate polyoxyethylene solves-30, or a combination of both. However, from the viewpoint of odor stability, it is preferable to use polyisoethylene tetraisostearate-30.
In the present specification, tetraisostearic acid polyoxyethylene solves-30 and / or tetraoleic acid polyoxyethylene solves-30 are hereinafter collectively referred to as “tetra fatty acid solves-30”.

The component (C) in the cleansing cosmetic of the present invention is polyoxyethylene glyceryl ether fatty acid ester (hereinafter abbreviated as “fatty acid PEG glyceryl”).

The fatty acid PEG glyceryl in the present invention can be selected from those conventionally used in cosmetics and the like, and those having HLB = 5 to 10 are particularly preferable. The fatty acid constituting the fatty acid PEG glyceryl is preferably a linear or branched fatty acid having 12 to 22 carbon atoms, and examples thereof include stearic acid, isostearic acid and oleic acid. Among these, PEG glyceryl isostearate is particularly preferably used.

Specific examples of preferred fatty acid PEG glyceryl include PEG-3 glyceryl monoisostearate, PEG-5 glyceryl monoisostearate, PEG-6 glyceryl monoisostearate, PEG-8 glyceryl monoisostearate, PEG-10 glyceryl monoisostearate, PEG-10 glyceryl diisostearate, PEG-20 glyceryl diisostearate, PEG-10 glyceryl triisostearate, PEG-15 glyceryl triisostearate, PEG-20 glyceryl triisostearate, PEG-30 glyceryl triisostearate, etc. However, it is not limited to these. These fatty acid PEG glyceryls may be used alone or in combination of two or more.

The total blending amount of the component (B) tetrafatty acid Solves-30 and the component (C) fatty acid PEG glyceryl in the cleansing cosmetic of the present invention is not particularly limited as long as the effect of the present invention is achieved, but usually It is 5 to 15% by mass, preferably 6 to 12% by mass, more preferably 7 to 10% by mass, and still more preferably 8 to 9% by mass.

The blending ratio [(C) / (B)] of the component (B) tetrafatty acid sorbes-30 and the component (C) fatty acid PEG glyceryl is 0.20 to 0.70, preferably 0.22. To 0.68, more preferably 0.25 to 0.67. In the case of cosmetics having a blending ratio of less than 0.20 or more than 0.70, the wash-out property is inferior and the storage stability may be lowered.

The cleansing cosmetic of the present invention may contain 1 mass or less, for example, about 0.0001 to 1 mass% of water, or may be in an anhydrous form not containing water. Since the cleansing cosmetic composition of the present invention contains a combination of surfactants (components (A) and (B)) excellent in compatibility with the oil (component (A)), it results from volatilization of water. And no turbidity or precipitation occurs even under low and high temperature conditions.

The cleansing cosmetic composition of the present invention comprises (A) at least one selected from polyoxyethylene solves-30 tetraisostearate and polyoxyethylene solves 30 tetraolestearate together with an oil that is liquid at room temperature, (C) Since it contains a combination with polyoxyethylene glyceryl ether fatty acid ester, it does not easily cause odor due to deterioration, and does not contain a water-soluble reducing agent such as sulfurous acid, thiosulfuric acid, or salts thereof, or bisulfite. preferable.

The cleansing cosmetic of the present invention is transparent or translucent, has a viscosity at 30 ° C. of 30 mPa · s or less, preferably 25 mPa / s or less, more preferably about 20 mPa · s, and is particularly excellent in usability. Yes.

The cleansing cosmetic composition of the present invention can be added with various components that are widely used in the field of cosmetics and pharmaceuticals as long as the effects of the present invention are not impaired. For example, vitamin B group, vitamin C and derivatives thereof, tranexamic acid, pantothenic acid and derivatives thereof, water-soluble active substances such as vitamins such as biotin, water-soluble polymers such as guar gum, xanthan gum and polyvinyl alcohol, vitamin E, β -Oil-soluble active substances such as carotene, buffers such as arginine, aspartic acid, citric acid, tartaric acid and lactic acid, chelating agents such as EDTA, preservatives, various dyes and the like. However, since the cleansing cosmetic composition of the present invention has a low viscosity, the blending amount of the thickener or gelling agent is limited, and the blending agent is, for example, less than 2% by mass, less than 1% by mass, or 0.1%. It is preferable that the amount be less than about mass%. For example, an embodiment in which a thickening gelling agent such as (behenic acid / eicosanedioic acid) glyceryl is not included is also included.

The cleansing cosmetic composition of the present invention can be produced according to a conventional method. Specifically, after mixing and stirring the oil phase component / surfactant at room temperature, the aqueous phase component is optionally mixed. Add, mix, and stir to prepare a liquid cleansing cosmetic.

The cleansing cosmetic composition of the present invention is suitable for use as a skin cleansing composition or a massage cosmetic composition, in particular, as a makeup cleansing oil having excellent washability.

Hereinafter, the present invention will be described in more detail with reference to specific examples. However, the examples are representative examples of the present invention and do not limit the technical scope of the present invention. In addition, the unit of a compounding quantity is the mass%.

Cleansing cosmetics were prepared according to conventional methods according to the formulations listed in Tables 1 to 4 below. The resulting cleansing cosmetic was evaluated for ease of washing with water and stability over time by the following methods.

(1) Evaluation of ease of washing:
The expert evaluation panel evaluated using each test sample of an Example and a comparative example. First, a W / O emulsified foundation was applied to the entire face and dried for about 30 minutes. Next, a 3 mL hand of the test sample was taken and stretched over the entire face to blend in the foundation, and then rinsed off with warm water. The ease of washing at this time was evaluated according to the following criteria.
A: It was possible to wash away quickly and completely.
B: There was no slimy touch and it was able to wash away completely.
C: Although it feels a little slimy, it could be completely washed away by rinsing a few times.
D: Feels slimy indefinitely, and oiliness remained until the end. Or the viscosity increased significantly at the time of washing and could not be washed out easily.

(2) Evaluation of stability over time:
Each test sample of Example and Comparative Example was placed in a transparent PET container with a 50 ml dispenser and stored at 50 ° C. for 1 month, and then left at −5 ° C., 0 ° C., 25 ° C., and 50 ° C., respectively. This was done by observing the appearance for one month and evaluated according to the following criteria.
A: There was no change in the appearance. B: There was almost no change in the appearance. C: Abnormalities such as precipitation and two-layer separation were observed at the temperature at the time of standing, but returned to 25 ° C and left to stand. Returning to a uniform and normal appearance D: Abnormalities such as precipitation and two-layer separation are observed at the temperature when left standing, and the normal appearance does not return even after standing at 25 ° C.

As shown in Table 1, in Examples 1-1, 1-2 and 1-3 in which fatty acid PEG glyceryl was blended as a second surfactant blended in combination with tetrafatty acid Solves-30, the ease of washing and aging Although both stability was excellent, Comparative Examples 1-1 and 1-2 blended with polyoxyethylene fatty acid ester were inferior in stability over time, and white turbidity and separation were observed. It was found that sorbitan fatty acid ester (Comparative Example 1-3) and polyglycerin fatty acid ester (Comparative Examples 1-4 and 1-5) are excellent in stability over time but inferior in washing.

As is clear from the results shown in Table 2, the blending ratio [(C) / (B)] of (B) tetrafatty acid Solves-30 and (C) fatty acid PEG glyceryl is 0.20 to 0.70. In the examples within the range, both ease of washing and stability over time are excellent, but in the comparative examples in which this ratio is outside the above range, the ease of washing is particularly lowered. These tendencies were observed in the same manner even when the total amount of (B) tetrafatty acid Solves-30 and (C) fatty acid PEG glyceryl was changed to 8 mass%, 10 mass%, and 12 mass%.

As shown in Table 3, in the examples using (B) tetraisostearic acid polyoxyethylene solves-30 or tetraoleic acid polyoxyethylene solves-30 as tetrafatty acid solves-30, easy washing and stability over time Both were excellent, but when replaced with other surfactant (B ′), that is, PEG-40 sorbitol pentaisostearate or PEG-40 sorbitol pentaoleate, the ease of washing was deteriorated. This tendency was the same even when the blending ratio of the two types of surfactants was changed.

As shown in Table 4, the ratio of (B) tetrafatty acid Solves-30 to (C) fatty acid PEG glyceryl (B): when (C) is 4: 1 (upper) and 3: 2 (lower) A similar trend was seen in. That is, in Examples 4-1 to 4-6 in which the ratio of the nonpolar hydrocarbon oil (mineral oil + isododecane) in the oil blended in the cleansing cosmetic is 40% by mass or more, easy washing and stability over time Both were excellent, non-sticky after washing, and excellent detergency. However, in Comparative Examples 4-1, 4-2 and 4-6 in which the proportion of the nonpolar oil was less than 40% by mass and a large amount of silicone oil was blended, the stability over time was lowered and separation and white turbidity occurred. . Further, Comparative Examples 4-3 to 4-5 and 4-7 to 4-9 containing a large amount of polar oil (ethylhexyl palmitate + triethylhexanoin) were poorly washed away and felt sticky after washing.

Claims

(A) 70 to 95% by mass of liquid oil at room temperature;
(B) at least one selected from tetraoxystearic acid polyoxyethylene solves-30 and tetraoleic acid polyoxyethylene solves-30; and (C) a polyoxyethylene glyceryl ether fatty acid ester,
Nonpolar hydrocarbon oil accounts for 40% by mass or more of the component (A),
A cleansing cosmetic, wherein the blending ratio [(C) / (B)] of the component (B) and the component (C) is in the range of 0.20 to 0.70.
The cleansing cosmetic according to claim 1, which does not contain a water-soluble reducing agent.
The (C) polyoxyethylene glyceryl ether fatty acid ester is selected from the group consisting of polyoxyethylene glyceryl monoisostearate, polyoxyethylene glyceryl diisostearate, and polyoxyethylene glyceryl triisostearate having HLB = 5 to 10. The cleansing cosmetic according to claim 1 or 2, which is one or more selected.
The cleansing according to any one of claims 1 to 3, wherein the nonpolar hydrocarbon oil is one or more selected from the group consisting of mineral oil, squalane, squalene, isododecane, and isohexadecane. Cosmetics.
The cleansing cosmetic according to any one of claims 1 to 4, which does not contain water.