JP7009811B2 - Gel cleansing fee - Google Patents

Description

The present invention relates to a gel-like cleansing agent that can remove make-up cosmetics such as mascara, lipstick, and foundation applied to the skin and UV-preventing cosmetics, and also has a function as a massage cosmetic.

Makeup cosmetics and UV protection cosmetics (hereinafter, also referred to as "makeup cosmetics, etc.") have the effect of making the skin look beautiful and protecting the skin from external stimuli, and are indispensable in the life of modern society. It has become something that cannot be done. However, since these cosmetics contain a large amount of oily components and inorganic pigments, they block the pores of the skin, hinder metabolism, and the cosmetics themselves are gradually oxidized, so long-term use causes skin problems. May cause. Therefore, it is necessary to remove these cosmetics once a day with a cleansing agent.

In addition to the effect of removing make-up cosmetics and the like, the cleansing agent may be required by consumers to have the function of a massage cosmetic. The functions of the massage cosmetics are good spreadability and an appropriate sense of thickness at the time of use, and when the massage effect is enhanced by these functions, the blood color improving effect by promoting blood circulation is expected. However, the goodness of spread and the feeling of thickness are contradictory effects, and the familiarity with make-up cosmetics and the feeling of thickness are also contradictory effects, so how to achieve both of these is an issue for development.

In addition, a cleansing agent having a warm feeling is also preferred by consumers because it is expected to have an effect of improving blood color by promoting blood circulation. As described above, from the viewpoint of the effect of improving blood color, it is preferable that the cleansing agent has the function and warmth of the massage cosmetic. As a cleansing agent having a warm feeling, various cleansing agents using the heat of hydration of glycerin are commercially available, but many of these products are not well-suited to make-up cosmetics and have an insufficient cleansing effect. Furthermore, many of these products had insufficient moisturizing sensation immediately after use, and none of them maintained the moisturizing sensation until the next morning.

By adjusting the type and amount of surfactant and thickener, there is a feeling of warmth when used, it spreads well when used, and it has good compatibility with makeup cosmetics, etc. Attempts have been made to develop a cleansing agent that can be effectively removed and can be washed away without stickiness.

As such a cleansing agent, for example, Patent Document 1 discloses a cleansing agent containing glycerin, a nonionic surfactant, and two kinds of acrylic acid-based water-soluble polymers. Patent Document 2 discloses a cleansing agent containing glycerin, two types of nonionic surfactants, and an anionic water-soluble polymer. Patent Document 3 discloses a gel-like skin cleansing agent containing a polyhydric alcohol containing glycerin, a nonionic surfactant, and a thickener.
Further, Patent Document 4 discloses a solid polyhydric alcohol base containing an oligoester gelling agent, a polyhydric alcohol, and a nonionic surfactant. Patent Document 5 discloses a paste-like cleansing agent containing (behenic acid / icosanedioic acid) glyceryl, (behenic acid / icosanedioic acid) polyglyceryl-10, an oily component, a surfactant, and glycerin. Patent Document 6 describes a paste-like cleansing cosmetic containing a polyhydric alcohol containing glycerin, polyglyceryl-10 (behenic acid / eicosanic acid), a nonionic surfactant, an oily component, and a specific polymer or organic acid. It has been disclosed.

As described above, among the cleansing agents for removing makeup, the cleansing agent having a warm feeling at the time of use is expected to have an effect of improving the complexion due to the warm feeling, and is therefore preferred by consumers. In addition, a cleansing agent that spreads well during use and has an appropriate thickness can enhance the massage effect, and is expected to have an effect of improving blood color by massage. Therefore, in terms of improving the complexion, consumers are demanding a cleansing agent that has a warm feeling at the time of use, spreads well at the time of use, and is thick.
On the other hand, there is a problem that the cleansing agent having a warm feeling at the time of use and the cleansing agent having a thick feeling at the time of use are not sufficiently compatible with makeup cosmetics and the like. In addition, most of the warm cleansing agents had insufficient moisturizing sensation immediately after use, and none of them maintained the moisturizing sensation until the next morning.
That is, it has excellent storage stability, has a warm feeling when used, spreads well when used, and has a thick feeling of use, and has good compatibility with makeup cosmetics applied to the skin. No cleansing agent has been obtained that can effectively remove make-up cosmetics, etc., can be washed off without stickiness, and maintains a moisturizing feeling not only immediately after use but also until the next morning. The fee was desired.

Japanese Unexamined Patent Publication No. 2013-28842 Japanese Unexamined Patent Publication No. 2014-34548 Japanese Unexamined Patent Publication No. 2014-37404 Japanese Unexamined Patent Publication No. 2004-331573 Japanese Unexamined Patent Publication No. 2016-74638 Japanese Patent No. 6086462

INDUSTRIAL APPLICABILITY The present invention has excellent storage stability, a warm feeling at the time of use, a good spreadability at the time of use, a thick feeling of use, and a good affinity with makeup cosmetics applied to the skin. It is an object of the present invention to provide a gel-like cleansing agent that can effectively remove make-up cosmetics and the like, can be washed away without stickiness, and maintains a moisturizing feeling not only immediately after use but also until the next morning.

As a result of diligent studies to solve the above problems, the present inventor has obtained a gel-like cleansing agent having a desired effect by selecting a specific material and setting the blending ratio within a specific range. It was found that this was possible, and the present invention was completed.

That is, the present invention is as follows.
(A) 7 to 25% by mass of liquid oil at 25 ° C.
(B) Polyoxyethylene glycerin monofatty acid ester in an amount of 1 to 10% by mass,
(C) Polyacrylic acid amide in an amount of 0.1 to 0.6% by mass,
(D) Contains 0.5-5% by mass of a mixed ester of (poly) glycerin with behenic acid and icosanedioic acid, and (E) 65-90% by mass of glycerin.
A gel-like cleansing agent having a total content of the component (C) and the component (D) of 0.7 to 5.2% by mass.
The (poly) glycerin in the component (D) represents glycerin or polyglycerin.

The gel-like cleansing agent of the present invention has excellent storage stability, has a warm feeling when used, spreads well when used, and has a thick feeling of use, and is used as a make-up cosmetic or the like applied to the skin. It has a good familiarity with the skin, can effectively remove make-up cosmetics, etc., and can be washed away without stickiness, and has the effect of maintaining a moisturizing feeling not only immediately after use but also until the next morning.

Hereinafter, embodiments of the present invention will be described.
The gel-like cleansing agent of the present invention comprises (A) a liquid oil at 25 ° C., (B) polyoxyethylene glycerin monofatty acid ester, (C) polyacrylic acid amide, (D) (poly) glycerin, and behenic acid. And a mixed ester with eicosandiic acid, and (E) glycerin. Hereinafter, each component will be described.

[(A) Liquid oil at 25 ° C]
The component (A) used in the present invention is an oil in a liquid state at 25 ° C., which is usually used for cosmetics and pharmaceuticals. Examples of such liquid oils include hydrocarbon oils, ester oils, fats and oils, and silicone oils.

Examples of the hydrocarbon oil include hydrocarbon oils having 12 or more carbon atoms, which are usually used in cosmetics. Specific examples of the compound include liquid paraffin, liquid isoparaffin, squalane and the like, and liquid isoparaffin is particularly preferable.

The ester oil is a dehydration condensate of an acid and an alcohol, and examples of the acid include fatty acids, polybasic acids, and hydroxy acids, and examples of the alcohol include lower alcohols, higher alcohols, and polyhydric alcohols. And so on. Specific examples of the compound include ethylhexyl palmitate, isononyl isononanoate, pentaerythrityl tetraethylhexanoate, glycerin triisostearate, cetyl lactate and the like, and isononyl isononanoate is particularly preferable. The ester oil as the component (A) is an ester oil excluding the component (B) and the component (C) described later.

Examples of the fats and oils include those usually used in cosmetics, and examples thereof include those obtained by subjecting oil collected from animals and plants to a treatment such as deodorization and decolorization to purify the oil. Specific examples thereof include olive oil, macadamia nut oil, sunflower oil and the like.

Silicone oils are roughly classified into linear silicone oils and cyclic silicone oils. Examples of the linear silicone oil include dimethylpolysiloxane and methylphenylpolysiloxane, and examples of the cyclic silicone oil include decamethylcyclopentasiloxane and dodecamethylcyclohexasiloxane, and in particular, decamethylcyclo. Pentasiloxane is preferred.
The oil in liquid form at 25 ° C. can be used alone or in combination of two or more, and it is preferable to use two or more in combination.

[(B) Polyoxyethylene glycerin monofatty acid ester]
The component (B) used in the present invention is a polyoxyethylene glycerin monofatty acid ester obtained by adding ethylene oxide to a glycerin monofatty acid ester.
The fatty acid used as a raw material for the polyoxyethylene glycerin monofatty acid ester is preferably a fatty acid having 8 to 22 carbon atoms, particularly preferably 10 to 18 carbon atoms, and a mixed fatty acid thereof can also be used. Specific examples thereof include coconut oil fatty acid, lauric acid, myristic acid, oleic acid, and isostearic acid, and coconut oil fatty acid is particularly preferable.
The number of moles of ethylene oxide added to the polyoxyethylene glycerin monofatty acid ester is preferably 4 to 80, and particularly preferably 6 to 30. Further, it is preferable to adjust the number of moles of ethylene oxide added so that the HLB of the polyoxyethylene glycerin monofatty acid ester is 11 to 18. The HLB adopted the following calculation method proposed by Griffin.
HLB = 20 (1-S / A)
S: Saponification value of ester, A: Acid value of fatty acid

Specific examples of the polyoxyethylene glycerin monofatty acid ester used in the present invention include polyoxyethylene (7 mol) monococonut oil fatty acid glyceryl (HLB: 13) and polyoxyethylene (8 mol) monoisostearate glyceryl (. HLB: 12), polyoxyethylene (20 mol) monolaurate glyceryl (HLB: 16.5) and the like are exemplified, and polyoxyethylene (7 mol) monococonut oil fatty acid glyceryl is preferable.

[(C) Polyacrylic acid amide]
The component (C) used in the present invention is a polymer of acrylic acid amide, that is, polyacrylic acid amide.
As the polyacrylic acid amide, a product commercially available as a raw material for cosmetics can be used. Specific examples thereof include "SEPIGEL 305" manufactured by SEPPIC, which contains 40% by mass of polyacrylic acid amide.

[Mixed ester of (D) (poly) glycerin with behenic acid and icosane diacid]
The component (D) used in the present invention is a mixed ester synthesized from glycerin or polyglycerin and behenic acid and icosane diacid. As these mixed esters, products commercially available as raw materials for cosmetics can be used. Specific products include, for example, "Nomcoat HK-G" manufactured by Nisshin Oillio Group Co., Ltd., which is a mixed ester of glycerin and behenic acid and eicosandiic acid (glycerin / behenic acid / eicosandiic acid condensate). "Nomcoat HK-P" manufactured by Nisshin Oillio Group Co., Ltd., which is a mixed ester of polyglycerin and behenic acid and eicosandiic acid (polyglycerin / behenic acid / eicosandiic acid condensate).
The number of moles of glycerin added in the polyglycerin / behenic acid / icosane diacid condensate is preferably 2 to 20, particularly preferably 5 to 15.
The glycerin / behenic acid / icosane diic acid condensate and the polyglycerin / behenic acid / icosane diic acid condensate may be used alone, but are preferably used in combination. When used in combination, the mass ratio of glycerin / behenic acid / icosane diic acid condensate / polyglycerin / behenic acid / icosane diic acid condensate is preferably 1/1 to 1/10, and particularly 1/1 to 1 /. It is preferably 5.

[(E) Glycerin]
The component (E) used in the present invention is glycerin. Glycerin can be produced by a method of purifying an aqueous solution obtained by hydrolyzing fats and oils by distillation or the like.

The content of the component (A) in the gel-like cleansing agent of the present invention is 5 to 25% by mass, preferably 7 to 23% by mass, and particularly preferably 10 to 20% by mass in the total amount of the composition. If the content of the component (A) is too small, it may not be compatible with make-up cosmetics and the like, and the stain removal may be insufficient. If the content of the component (A) is too large, the stability may be poor. It may get worse, the feeling of warmth may be insufficient, and it may feel sticky.

The content of the component (B) is 1 to 10% by mass, preferably 2 to 9% by mass, and particularly preferably 3 to 8% by mass in the total amount of the composition. If the content of the component (B) is too low, the stability may deteriorate and stickiness may be felt, and if the content of the component (B) is too high, the warmth will be insufficient and the moisturizing feeling after use will be felt. May be inadequate.

The content of the component (C) is 0.05 to 0.6% by mass, preferably 0.1 to 0.5% by mass, and particularly preferably 0.15 to 0.4% by mass in the total amount of the composition. Is. If the content of the component (C) is too low, it will not be gelled and the stability will be poor, and it may be difficult to maintain the moisturizing feeling until the next morning. If the content of the component (C) is too high, it will spread. It becomes worse, and it does not fit well with make-up cosmetics, etc., and may feel sticky.

The content of the component (D) is 0.5 to 5% by mass, preferably 1 to 4.5% by mass, and particularly preferably 1.5 to 4% by mass in the total amount of the composition. If the content of the component (D) is too small, the spread may be poor and the thickness may be insufficient, and if the content of the component (D) is too large, the feeling of warmth may be insufficient and make-up. It may not be familiar with cosmetics.

The content of the component (E) is 65 to 93% by mass, preferably 70 to 90% by mass, and particularly preferably 75 to 87% by mass in the total amount of the composition. If the content of the component (E) is too low, the feeling of warmth may be insufficient, and if the content of the component (E) is too high, it will not be compatible with makeup cosmetics, etc., and stains will be removed. It may be inadequate.

The total content of the component (C) and the component (D) is 0.7 to 5.2% by mass, preferably 1.0 to 4.5% by mass, and particularly preferably 1.2 to 4.2. be. If the total content is too low, the stability may deteriorate, and if the total content is too high, the spread may be poor and the compatibility with make-up cosmetics and the like may be insufficient.

In addition to the above-mentioned ingredients (A) to (E), the gel-like cleansing agent of the present invention may further contain general ingredients used in cosmetics as additive ingredients. For example, since water and other surfactants are contained in the products of the components (A) to (E), water can be prepared by preparing the gel-like cleansing agent of the present invention using such products. And other surfactants may be contained in the gel-like cleansing agent of the present invention.

The total content of the components (A) to (E) is preferably 80 to 100% by mass, particularly preferably 85 to 100% by mass, still more preferably 90 to 100% by mass, and particularly preferably 90 to 100% by mass in the total amount of the composition. It is 95 to 100% by mass.

As a method for preparing the gel-like cleansing agent of the present invention, a usual method can be adopted. For example, the component (A) is added to a mixed solution obtained by mixing, heating and dissolving the components (B), (C), (D) and (E), and the components (A) are uniformly mixed, and then the mixture is brought to near room temperature. It can be manufactured by stirring and cooling.

Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples.
The gel-like cleansing agents shown in Table 1 (Examples 1 to 7) and Table 2 (Comparative Examples 1 to 7) were prepared and evaluated by the following methods.
In addition, in Table 1 and Table 2, the numerical value of each component shows the content (mass%) in the total amount of a composition. For polymers 1 and 2, the content of the active ingredient in each product is shown in parentheses.

<Evaluation method>
(1) Appearance The appearance (characteristics) immediately after the adjustment was visually confirmed.

(2) Stability The state after standing and storing at 40 ° C. for 1 month was confirmed, and the stability was judged as follows.
◯: No separation was observed.
X: Separation was observed.

(3) Warm feeling during use Twenty women with make-up were used as panelists, and the warm feeling when using the gel-like cleansing agent was judged as follows.
2 points: I felt that there was enough warmth.
1 point: I felt that there was a feeling of warmth.
0 points: I felt that the feeling of warmth was insufficient.
The total score of 20 people was calculated, evaluated according to the following criteria, and displayed in the table.
⊚: There is no panelist who has a total score of 35 points or more and has evaluated 0 points.
◯: There is a panelist who has a total score of 30 points or more and less than 35 points, or a total score of 35 points or more and 0 points.
Δ: The total score is 20 points or more and less than 30 points.
X: The total score is less than 20 points.

(4) Spreading when using 20 women who made up were used as panelists, and the stretching when using the gel-like cleansing agent was judged as follows.
2 points: I felt that the spread was very good.
1 point: I felt that the spread was good.
0 points: I felt that the spread was bad.
The total score of 20 people was calculated, evaluated according to the following criteria, and displayed in the table.
⊚: There is no panelist who has a total score of 35 points or more and has evaluated 0 points.
◯: There is a panelist who has a total score of 30 points or more and less than 35 points, or a total score of 35 points or more and 0 points.
Δ: The total score is 20 points or more and less than 30 points.
X: The total score is less than 20 points.

(5) Feeling of thickness at the time of use Twenty women with make-up were used as panelists, and the thickness at the time of using the gel-like cleansing agent was determined as follows.
2 points: I felt that the feeling of use was sufficiently thick.
1 point: I felt that it was a little thick.
0 points: I felt that it was a thin feeling.
The total score of 20 people was calculated, evaluated according to the following criteria, and displayed in the table.
⊚: There is no panelist who has a total score of 35 points or more and has evaluated 0 points.
◯: There is a panelist who has a total score of 30 points or more and less than 35 points, or a total score of 35 points or more and 0 points.
Δ: The total score is 20 points or more and less than 30 points.
X: The total score is less than 20 points.

(6) Familiarity with make-up cosmetics Twenty women who made up were used as panelists, and the familiarity with make-up cosmetics when using gel-like cleansing agents was judged as follows.
2 points: I felt that it was quick to get used to makeup cosmetics.
1 point: I felt that it would take some time to get used to the makeup cosmetics.
0 points: I felt that it was obviously slow to get used to makeup cosmetics.
The total score of 20 people was calculated, evaluated according to the following criteria, and displayed in the table.
⊚: There is no panelist who has a total score of 35 points or more and has evaluated 0 points.
◯: There is a panelist who has a total score of 30 points or more and less than 35 points, or a total score of 35 points or more and 0 points.
Δ: The total score is 20 points or more and less than 30 points.
X: The total score is less than 20 points.

(7) Cleansing effect Twenty women who made up were used as panelists, and the stain removal of the make-up cosmetics when using the gel-like cleansing agent was judged as follows.
2 points: I felt that the makeup was sufficiently clean.
1 point: I felt that the makeup was a little dirty.
0 points: I clearly felt that the makeup stains were not removed well.
The total score of 20 people was calculated, evaluated according to the following criteria, and displayed in the table.
⊚: There is no panelist who has a total score of 35 points or more and has evaluated 0 points.
◯: There is no panelist who has a total score of 30 points or more and less than 35 points and has evaluated 0 points.
Δ: There is a panelist who has a total score of 20 points or more and less than 30 points, or a total score of 30 points or more and 0 points.
X: The total score is less than 20 points.

(8) Non-stickiness when washed off Twenty women with make-up were used as panelists, and after blending with make-up cosmetics using a gel-like cleansing agent, the stickiness when washed off was judged as follows. ..
2 points: I felt that there was no stickiness when rinsing.
1 point: I felt that it was a little sticky when it was washed away.
0 points: I felt that it was clearly sticky when washed off.
The total score of 20 people was calculated, evaluated according to the following criteria, and displayed in the table.
⊚: There is no panelist who has a total score of 35 points or more and has evaluated 0 points.
◯: There is a panelist who has a total score of 30 points or more and less than 35 points, or a total score of 35 points or more and 0 points.
Δ: The total score is 20 points or more and less than 30 points.
X: The total score is less than 20 points.

(9) Moisturizing sensation immediately after use Twenty women with make-up were used as panelists, and after using a gel-like cleansing agent to blend with the make-up cosmetics, they were washed away. After that, the moisturizing feeling when towel-dried was determined as follows.
2 points: I felt that there was a moisturizing feeling immediately after towel drying.
1 point: Immediately after towel drying, I felt that there was a slight moisturizing feeling.
0 points: Immediately after towel drying, I felt that there was no moisturizing feeling.
The total score of 20 people was calculated, evaluated according to the following criteria, and displayed in the table.
⊚: There is no panelist who has a total score of 35 points or more and has evaluated 0 points.
◯: There is a panelist who has a total score of 30 points or more and less than 35 points, or a total score of 35 points or more and 0 points.
Δ: The total score is 20 points or more and less than 30 points.
X: The total score is less than 20 points.

(10) Moisturizing feeling the next morning Twenty women who made up were used as panelists, and after using a gel-like cleansing agent to blend with the make-up cosmetics, they were washed away. After that, the skin was dried with a towel, and the skin care using a lotion, a milky lotion, a cream, or the like was not performed, and the moisturizing feeling of the skin the next morning was judged as follows.
2 points: I felt that there was a moisturizing feeling.
1 point: I felt that there was a slight moisturizing feeling.
0 points: I felt that there was no moisturizing feeling.
The total score of 20 people was calculated, evaluated according to the following criteria, and displayed in the table.
⊚: There is no panelist who has a total score of 35 points or more and has evaluated 0 points.
◯: There is a panelist who has a total score of 30 points or more and less than 35 points, or a total score of 35 points or more and 0 points.
Δ: The total score is 20 points or more and less than 30 points.
X: The total score is less than 20 points.

(* 1) "SEPIGEL 305" (manufactured by SEPPIC)
The numbers in the table represent the content of "SEPIGEL 305", and the numbers in parentheses represent the content of acrylic acid amide as a polymer.
Composition of "SEPIGEL 305" (polymer of acrylic acid amide: 40%, water: 30%, hydrogenated polyisobutene: 24%, laureth-7: 6%)
(* 2) "SIMULGEL NS" (manufactured by SEPPIC)
The numbers in the table represent the content of "SIMULGEL NS", and the numbers in parentheses represent the content of hydroxyethyl acrylate and sodium acryloyldimethyltaurine as a copolymer.
Composition of "SIMULGEL NS" (copolymer of hydroxyethyl acrylate and sodium acryloyldimethyltaurine: 37.5%, squalane: 25.5%, polysorbate 80: 5.5%, water: 31.5%)
(* 3) "AQUAPEC HV-505E" (manufactured by Sumitomo Seika Chemical Co., Ltd.) (Component name: Carboxyvinyl polymer, INCI: CARBOMER)

All of the gel-like cleansing agents of Examples 1 to 7 have excellent storage stability, a warm feeling at the time of use, a good spreadability at the time of use, and a thick feeling of use, and are used with make-up cosmetics. It fits well, can effectively remove make-up cosmetics, and can be washed off without stickiness, and the moisturizing sensation was maintained not only immediately after use but also until the next morning.

On the other hand, in Comparative Examples 1 to 7, sufficient performance was not obtained.
In Comparative Example 1, since the content of the component (A) was too small, the familiarity with the make-up cosmetics was slow, and the cleansing effect was not sufficient.
In Comparative Example 2, since the content of the component (A) was too large, the feeling of warmth and thickness at the time of use was insufficient, and there was stickiness at the time of rinsing.
In Comparative Example 3, since the ingredient (B) is not blended, it does not spread sufficiently when used, it is slow to blend with makeup cosmetics, its cleansing effect is not sufficient, it is sticky when washed off, and it is moisturized the next morning. The feeling was not enough.

In Comparative Example 4, since the other polymer 2 was blended in place of the component (C), the moisturizing sensation immediately after use was not sufficient, and there was no moisturizing sensation the next morning.
In Comparative Example 5, since the other polymer 3 was blended in place of the component (C), it was in the form of a gel immediately after preparation, but the stability was poor and the polymer was separated. Therefore, the items (3) to (10) were not evaluated.
In Comparative Example 6, since the component (C) is not blended and the content of the component (D) is too large, the feeling of warmth at the time of use is insufficient, the familiarity with the make-up cosmetics is slow, and cleansing. The effect was not sufficient, the moisturizing sensation immediately after use was not sufficient, and there was no moisturizing sensation the next morning.
In Comparative Example 7, since the component (D) was not blended, the spread during use was not sufficient and there was no sense of thickness.

Claims (1)

(A) 7 to 25% by mass of liquid oil at 25 ° C.
(B) Polyoxyethylene glycerin monofatty acid ester in an amount of 1 to 10% by mass,
(C) Polyacrylic acid amide in an amount of 0.1 to 0.6% by mass,
(D) Contains 0.5-5% by mass of a mixed ester of (poly) glycerin with behenic acid and icosanedioic acid, and (E) 65-90% by mass of glycerin.
A gel-like cleansing agent having a total content of the component (C) and the component (D) of 0.7 to 5.2% by mass.