KR20180115740A - Cleansing Cosmetic - Google Patents

Abstract

It is an object of the present invention to provide a cleansing cosmetic having a low viscosity which is excellent in stability under low or high temperature conditions even in a non-aqueous system containing a trace amount of water or containing no water, and excellent in usability such as washability. (A) 70 to 95% by mass of an oil fraction which is liquid at room temperature; (B) at least one member selected from polyoxyethylene sorbes-30 of tetraisostearic acid and polyoxyethylene sorbes-30 of tetraoleic acid; And (C) a polyoxyethylene glyceryl ether fatty acid ester, wherein the non-polar hydrocarbon oil occupies 40% by mass or more of the component (A) and the ratio of the component (B) ) / (B)] is in the range of 0.20 to 0.70.

Description

Cleansing Cosmetic

The present invention relates to cleansing cosmetics. More particularly, the present invention relates to a cleansing cosmetic material having a low viscosity and excellent storage stability and good usability such as washability.

A cleansing cosmetic such as a makeup cleansing oil is used for the purpose of erasing the makeup cosmetic material and various improvements have been examined from the viewpoints of usability and cleansing effect improvement and storage stability of the above cleansing cosmetic.

However, in a cleansing cosmetic composition which does not contain water or contains a small amount of water, problems such as cloudiness or precipitation may occur due to long-term preservation or preservation under high-temperature conditions. In particular, it has been found that the stability of a cleansing cosmetic having a low viscosity including a trace amount of water depends on the amount of water (amount of water) present in the cosmetic, and whitening or precipitation occurs when water is evaporated during preservation. Conventionally, stability has been maintained by studying a container to suppress the volatilization of water.

Patent Literature 1 discloses that a blend of ordinary temperature liquid oil fractions, a specific nonionic surfactant and a specific divalent alcohol at a specified ratio can prevent skin whitening and sedimentation even when stored for a long period of time or under high temperature conditions, . ≪ / RTI > However, in order to obtain sufficient storage stability, specific divalent alcohols are essential, and in some detergents containing one type of nonionic surfactant having HLB of 4 to 15, washability sometimes becomes insufficient.

On the other hand, Patent Document 2 discloses that a specific polyhydric alcohol triester (PEG-20 glyceryl triisostearate), a specific sugar alcohol fatty acid tetraester (sorbes-30 tetraisostearate) and a tetraester / triester ratio A personal care composition is formulated in which the liquid oil is contained in an amount of from 1.0 to 3.0 (2.0 to 2.2 in the examples), and the liquid oil is blended in an amount of 30 to 70 wt% and water in a maximum amount of 5 wt% Or under a wet condition, it exhibits an excellent makeup removing effect.

The composition described in Patent Document 2 contains water in an amount of not more than 5% by weight, but the phenomenon in which water is volatilized during storage is not studied at all. In addition, the oil blended in Patent Document 2 is described as natural or synthetic esters, hydrocarbons and silicone oil (paragraph 0033), and is not particularly limited. Depending on the type of oil to be selected, . ≪ / RTI >

Patent Document 3 discloses an oily cleanser containing (a) a liquid oil, (b) a nonionic surfactant, (c) a water-soluble reducing agent, and (d) water as essential components. However, deterioration of a liquid oil or a surfactant It is necessary to blend a water-soluble reducing agent in order to prevent odor from being generated by the water.

Japanese Patent Application Laid-Open No. 2005-68082 Japanese Patent No. 5361730 Japanese Patent Application Laid-Open No. 2003-95919

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances and it is an object of the present invention to provide a cleansing cosmetic composition which is excellent in stability under low or high temperature conditions even if it does not depend on the water content in which stability exists, It is an object of the present invention to provide a cleansing cosmetic having a low viscosity and excellent usability such as washability.

The inventors of the present invention have conducted intensive studies in order to achieve the above object, and as a result, they found that the above problems can be solved by combining two kinds of nonionic surfactants at blending ratios different from those in the prior art and selecting oil composition The present invention has been completed.

That is,

(A) 70 to 95% by mass of oil, which is liquid at room temperature;

(B) at least one member selected from polyoxyethylene sorbes-30 of tetraisostearic acid and polyoxyethylene sorbes-30 of tetraoleic acid; And

(C) a polyoxyethylene glyceryl ether fatty acid ester,

The non-polar hydrocarbon oil accounts for not less than 40% by mass of the component (A)

Wherein the total amount of the component (B) and the component (C) is 5 to 15 mass%, the ratio of the total amount of the component (B) and the component (C) is in the range of 0.20 to 0.70,

And a water content of 1 mass% or less.

The cleansing cosmetic composition of the present invention has stability that does not depend on the amount of water present in cosmetics, or that it does not cause opacity or precipitation over a long period of time under low or high temperature conditions even if it is a water-free anhydrous system. Further, the cleansing cosmetic composition of the present invention has a low viscosity and has excellent usability in washing well. Further, when the composition of the cleansing cosmetic composition of the present invention is used, a water-soluble reducing agent for preventing smell is also unnecessary.

Hereinafter, the present invention will be described in detail.

The cleansing cosmetic composition of the present invention comprises (A) at least one oil selected from liquid oils at room temperature, (B) polyoxyethylene sorbes-tetraisostearate-30 and tetraoleic acid polyoxyethylene sorbet-30, and (C) And an oxyethylene glyceryl ether fatty acid ester.

The oil (A) used in the present invention in a liquid state at normal temperature is an oil commonly used in cosmetics, and it is not particularly limited as long as it is oil that shows a liquid phase at room temperature (about 25 ° C).

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

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

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

In the cleansing cosmetic composition of the present invention, (A) the blending amount of the oil which is in a liquid state at room temperature is 70 to 95 mass%, preferably 75 to 85 mass%, with respect to the total amount of the cosmetic. If the amount is less than 70% by mass, the feeling of feeling when applied to the skin becomes too heavy, such as a feeling of oil-specific feeling is lost, and if it exceeds 95% by mass, the washability at the time of washing may be impaired Which is undesirable.

In the present invention, one or more kinds of oil fractions which are liquid at room temperature as exemplified above can be arbitrarily selected and used. However, it is necessary to prepare the non-polar hydrocarbon oil to occupy not less than 40 mass%, preferably not less than 60 mass%, and more preferably not less than 70 mass% of the component (A). If the ratio of the non-polar hydrocarbon oil in the component (A) is less than 40% by mass, phase separation may occur, which may lead to destabilization.

The component (B) in the cleansing cosmetic composition of the present invention is at least one member selected from polyoxyethylene sorbes-30 of tetraisostearic acid and polyoxyethylene sorbet-30 of tetraoleic acid.

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

(I) wherein -OCOR is an isostearic acid residue and the ethylene oxide adduct number (a + b + c + d + e + f) is 30 And the display name (INCI name) is sorbitol tetraisostearate-30.

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

The cleansing cosmetic composition of the present invention may contain either polyoxyethylene sorbes-tetraisostearic acid-30 or polyoxyethylene sorbet-tetraoleic acid-30, or both of them may be combined. However, from the viewpoint of the stability of the perfume, it is preferable to use polyoxyethylene sorbes-30 tetraisostearic acid.

In the present specification, tetraisostearic acid polyoxyethylene sorbes-30 and / or tetraoleic acid polyoxyethylene sorbet-30 are collectively referred to as "tetra fatty acid sorbes-30" hereinafter.

Component (C) in the cleansing cosmetic of the present invention is a 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 for cosmetics and the like, and it is particularly preferable that the HLB is 5 to 10. The fatty acid constituting the fatty acid PEG glyceryl is preferably a straight chain or branched chain fatty acid having 12 to 22 carbon atoms, and examples thereof include stearic acid, isostearic acid, oleic acid and the like. Among them, PEG glyceryl isostearate is particularly preferably used.

Examples of preferred fatty acid PEG glyceryl include monoisostearic acid PEG-3 glyceryl, monoisostearic acid PEG-5 glyceryl, monoisostearic acid PEG-6 glyceryl, monoisostearic acid PEG-8 glyceryl, Glyceryl isostearate, PEG-10 glyceryl isostearate, PEG-10 glyceryl diisostearate, PEG-20 glyceryl diisostearate, PEG-10 glyceryl triisostearate, PEG-15 glyceryl triisostearate, Isostearic acid PEG-20 glyceryl and triisostearic acid PEG-30 glyceryl, and the like. These fatty acid PEG glycerides may be used alone or in combination of two or more.

The total amount of the component (B) terephthalic acid sorbent-30 and the component (C) fatty acid PEG glyceryl in the cleansing cosmetic composition of the present invention is not particularly limited as long as the effect of the present invention is exhibited, To 15 mass%, preferably 6 to 12 mass%, more preferably 7 to 10 mass%, and still more preferably 8 to 9 mass%.

The ratio [(C) / (B)] of the component (B) terephthalic acid sorbent-30 to the component (C) fatty acid PEG glyceryl is in the range of 0.20 to 0.70, preferably 0.22 to 0.68, Is 0.25 to 0.67. When the blend ratio is less than 0.20 or more than 0.70, washability may be poor and storage stability may be deteriorated.

The cleansing cosmetic composition of the present invention may contain water of 1 mass or less, for example, about 0.0001 to 1 mass%, or may be a water-free form. Since the cleansing cosmetic composition of the present invention contains a combination of surfactants (components (A) and (B)) excellent in compatibility with oil (component (A)), there is no case of destabilization due to volatilization of water, Low and high temperature conditions do not cause clouding or sedimentation.

The cleansing cosmetic composition of the present invention comprises (A) at least one kind selected from (B) polyoxyethylene sorbes-tetraisostearic acid-30 and tetraoleic acid polyoxyethylene sorbet-30, C) polyoxyethylene glyceryl ether fatty acid ester, it is preferable that it is difficult to generate odor due to deterioration and does not contain a sulfurous acid, thiosulfuric acid or a salt thereof, or a water-soluble reducing agent called hydrogen sulfite.

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

The cleansing cosmetic composition of the present invention may contain various components commonly used in the field of cosmetics and pharmaceutical preparations insofar as the effect of the present invention is not impaired. For example, water-soluble active substances such as vitamin B group, vitamin C and its derivatives, tranexamic acid, pantothenic acid and its derivatives and vitamins such as biotin, water-soluble polymers such as guar gum, xanthan gum, polyvinyl alcohol, E, and β-carotene; buffers such as arginine, aspartic acid, citric acid, tartaric acid and lactic acid; chelating agents such as EDTA; preservatives; and various coloring matters. However, since the cleansing cosmetic composition of the present invention has a low viscosity, the blending amount of the thickening agent or the gelling agent is limited, and the blending amount thereof is preferably, for example, less than 2 mass%, less than 1 mass%, or less than 0.1 mass% , For example, (behenic acid / eicosanic acid) glyceryl-containing thickening agent.

The cleansing cosmetic composition of the present invention can be prepared by a conventional method. Specifically, the emulsifiable component and the surfactant are mixed and stirred at room temperature to make them uniform, and if necessary, the aqueous component is added, To prepare a liquid cleansing cosmetic.

INDUSTRIAL APPLICABILITY The cleansing cosmetic composition of the present invention is suitable for use as a skin cleansing agent or a massage cosmetic composition, particularly as a make-up cleansing oil having good washability.

Example

Hereinafter, the present invention will be described in more detail with reference to specific examples, but 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 the blending amount is% by mass.

Cleansing cosmetics were prepared according to the usual methods by the prescriptions shown in Tables 1 to 4 below. The cleansing cosmetics obtained were evaluated for ease of washing with water and stability with time by the following methods.

(1) Evaluation of ease of washing:

A professional evaluation panel was evaluated using each of the test samples of Examples and Comparative Examples. First, a foundation of W / O emulsion type was applied to the entire face and dried for about 30 minutes. Next, 3 mL of the test sample was taken into the hand, and the foundation was put on the entire face to fuse the foundation, and then washed with lukewarm water. The ease of washing at this time was evaluated according to the following criteria.

A: It was cleaned quickly and neatly.

B: It was completely washed out without greasy feel.

C: There is a somewhat greasy feel, but when it is rinsed 2 or 3 times, it is completely washed away.

D: It has a continuous smooth texture and the oil remains until the end. In addition, it was remarkably thickened at the time of washing and could not be washed easily.

(2) Evaluation of stability over time:

Each of the test samples of Examples and Comparative Examples was placed in a transparent PET container having a 50 ml dispenser and stored at 50 캜 for one month and then left at each temperature of -5 캜, 0 캜, 25 캜 and 50 캜, Was observed by observing the appearance state and evaluated according to the following criteria.

A: There was no change in appearance

B: There was almost no change in appearance

C: At the temperature at the time of leaving, an abnormality such as sedimentation or separation into two layers can be seen, but when the temperature is returned to 25 ° C, the temperature is returned to a uniform and normal appearance

D: An abnormality such as settling and separation of two layers is observed at the temperature at the time of leaving, and the temperature does not return to the normal appearance even when the temperature is returned to 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 to be combined with tetra fatty acid sorbes-30, ease of washing and stability with time But both of Comparative Examples 1-1 and 1-2 in which polyoxyethylene fatty acid ester was blended showed poor stability with time and cloudiness or separation. Sorbitan fatty acid esters (Comparative Examples 1-3) and polyglycerol fatty acid esters (Comparative Examples 1-4 and 1-5) were superior in the stability with time, but poor in washability.

As apparent from the results shown in Table 2, in the examples in which the blending amount ratio [(C) / (B)] of the (B) tetra fatty acid sorbes-30 and (C) fatty acid PEG glyceryl was within the range of 0.20 to 0.70 The ease of washing and the stability with the elapsed time were all excellent. However, in the comparative examples in which the ratio exceeded the above range, the ease of washing particularly deteriorated. These trends were also observed when the total amount of (B) tetra fatty acid sorbes-30 and (C) fatty acid PEG glyceryl was changed to 8% by mass, 10% by mass and 12% by mass.

As shown in Table 3, in the examples using (B) tetraisostearic acid polyoxyethylene sorbes-30 or tetraoleic acid polyoxyethylene sorbes-30 as the tetra fatty acid sorbes-30, the ease of washing and the stability with time (B '), that is, PEG-40 sorbitate pentaerythostearate or PEG-40 sorbitate pentaerythritate, the detergency was deteriorated. This tendency was the same even when the blending amount ratio of the two kinds of surfactants was changed.

As shown in Table 4, when the ratio (B) :( C) of tetra fatty acid sorbes-30 to (C) fatty acid PEG glyceryl was 4: 1 (upper) and 3: 2 ) Showed the same tendency. That is, in Examples 4-1 to 4-6 in which the ratio of the nonpolar hydrocarbon oil (mineral oil + isododecane) in the oil mixed with the cleansing cosmetic is 40% by mass or more, both the ease of washing and the stability with time are excellent , It was not sticky even after washing, and was excellent in washing power. However, the ratio of the nonpolar oil was less than 40% by mass, and in Comparative Examples 4-1, 4-2 and 4-6 in which silicone oil was incorporated in a large amount, the stability with time was deteriorated to cause separation or cloudiness. Further, in Comparative Examples 4-3 to 4-5 and 4-7 to 4-9 in which a polar oil (ethylhexyl palmitate + triethylhexanoin) was compounded in a large amount, the washability was poor and it was felt sticky even after washing .

Claims (5)

(A) 70 to 95% by mass of oil, which is liquid at room temperature;
(B) at least one member selected from polyoxyethylene sorbes-30 of tetraisostearic acid and polyoxyethylene sorbes-30 of tetraoleic acid; And
(C) a polyoxyethylene glyceryl ether fatty acid ester,
The non-polar hydrocarbon oil accounts for not less than 40% by mass of the component (A)
Wherein the ratio [(C) / (B)] of the amount of the component (B) to the amount of the component (C) is in the range of 0.20 to 0.70. The method according to claim 1,
Cleansing cosmetics containing no water-soluble reducing agent. 3. The method according to claim 1 or 2,
Wherein the polyoxyethylene glyceryl ether fatty acid ester (C) is a polyoxyethylene glyceryl monoisostearic acid ester having an HLB of 5 to 10, a polyoxyethylene glyceryl diisostearic acid ester, and a polyoxyethylene glyceryl triisostearic acid ester And at least one kind of cleansing cosmetics. 4. The method according to any one of claims 1 to 3,
Wherein the non-polar hydrocarbon oil is at least one selected from the group consisting of mineral oil, squalane, squalene, isododecane and isohexadecane. 5. The method according to any one of claims 1 to 4,
Cleansing cosmetics without water.