JP6658264B2 - Aqueous cleansing cosmetics - Google Patents

Description

  The present invention relates to an aqueous cleansing cosmetic containing almost no oily component.

  Conventionally, oil-based cleansing cosmetics containing an oily component have been used as cleansing cosmetics because of their high effect of removing oily stains such as makeup. However, if the oil-based cleansing agent is used after being wiped off with cotton or tissue paper after being blended with the makeup agent, or when used after washing with water or lukewarm water, the oil-based components cannot be completely removed from the skin. However, there is a problem that a sticky feeling is generated. For this reason, after using an oil-based cleansing cosmetic, it was necessary to further wash with a face wash.

  In recent years, aqueous cleansing cosmetics containing almost no oily component have become mainstream due to the spread of eyelash extensions and the need for so-called time-saving cosmetics. Aqueous cleansing cosmetics are excellent in that they can be easily wiped or washed off and that they are less likely to be sticky. Specifically, a cleansing cosmetic that uses a nonionic surfactant as a component for removing oily stains such as a makeup material and does not contain an oily component has been proposed. For example, Patent Literature 1 discloses an aqueous solution containing a hydrophilic nonionic surfactant selected from a polyoxyethylene sorbitan ester, a dimethicone copolymer, a polyoxyethylene higher alcohol and a polyoxyethylene triglyceride and water, and substantially containing no oily substance. Cleansing compositions have been proposed.

  However, aqueous cleansing cosmetics have a problem that it is more difficult to sufficiently exert the effect of removing makeup than oil-based cleansing cosmetics. For example, it is difficult to remove mascara and eyeliner that have waterproof performance.If a large amount of nonionic surfactant is used for sufficient removal, the eye will easily permeate during use or the skin will dry after use. This may cause a sense of tightness.

  As a solution to these problems, for example, Patent Literature 2 proposes an aqueous cleansing cosmetic containing polyoxyethylene (capryl / capric acid) glyceryl, polyoxyethylene coconut oil fatty acid glyceryl, polyhydric alcohol and water. However, there is a problem in that when the lipstick is used for lipstick wiping, etc., if it enters the mouth a little, it becomes easy to feel bitterness and causes discomfort.

JP-A-8-301725 JP 2010-70521 A

  An object of the present invention is to provide a water-based cleansing cosmetic which is excellent in the effect of removing oily stains such as a makeup material, hardly permeates eyes during use, hardly feels bitterness, and hardly feels tight after use.

  The present inventors have conducted intensive studies in order to solve the above-described problems, and found that an aqueous cleansing cosmetic containing a specific nonionic surfactant and water in predetermined amounts respectively solves the above-described problems, The present invention has been completed.

  That is, the present invention contains (A) 0.5 to 10% by mass of a tetrafatty acid polyoxyethylene sorbitol, (B) 1 to 10% by mass of a polyoxyethylene fatty acid glyceryl, and (C) 75 to 90% by mass of water. And an aqueous cleansing cosmetic characterized in that the total of the contents of (A), (B) and (C) is 85% by mass or more.

Further, the aqueous cleansing cosmetic composition of the present invention may further contain (D) an alkylene oxide derivative represented by the formula (1) in an amount of 1 to 10% by mass.
G- {O} (EO) a (PO) b {-(BO) c-H} ₄ (1)
[In the formula (1), G is a residue obtained by removing a hydroxyl group from an alkyl glucoside having an alkyl group having 1 to 4 carbon atoms. EO is an oxyethylene group, PO is an oxypropylene group, a and b are the average addition mole numbers of EO and PO, respectively, a is 5 to 20, b is 1 to 10, and EO and PO are The ratio of the content of EO to the total content of is 55 to 90% by mass, and EO and PO are randomly added. BO is an oxybutylene group, c is the average number of moles of BO added, and c is 1-2. ]

  ADVANTAGE OF THE INVENTION According to the aqueous cleansing cosmetics of this invention, the effect which is excellent in the removal effect of fats and oils stains, such as a makeup material, hardly permeates eyes during use, hardly perceives bitterness, and hardly feels tight after use is obtained.

Hereinafter, embodiments of the present invention will be described.
The aqueous cleansing cosmetic composition of the present invention contains at least the following components (A), (B) and (C).

[(A) component]
The component (A) used in the present invention is a tetrafatty acid polyoxyethylene sorbitol, in other words, a polyoxyethylene sorbitol tetrafatty acid ester type nonionic surfactant. This nonionic surfactant can be obtained by, for example, an esterification reaction of polyoxyethylene sorbitol obtained by adding ethylene oxide to sorbitol and a fatty acid.

  The constituent fatty acid residues are, for example, fatty acid residues having 6 to 18 carbon atoms. Examples of such fatty acids include saturated fatty acids such as caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, and isostearic acid, and unsaturated fatty acids such as oleic acid, linoleic acid, and linolenic acid. In addition, fatty acid residues derived from mixed fatty acids can also be used, and examples thereof include fatty acid residues such as caprylic acid / capric acid, coconut oil fatty acids, and palm oil fatty acids. Of these fatty acids, oleic acid and isostearic acid are preferred, and isostearic acid is preferred because of less bitterness.

  The average number of moles of oxyethylene groups added to one molecule of sorbitol is preferably 3 to 80, particularly preferably 6 to 60, and further preferably 20 to 60. If the average number of added moles is too small, it may easily penetrate the eyes, and if the average number of added moles is too large, the effect of removing oily stains such as makeup may be reduced.

  As the component (A), for example, a commercially available product can be used as it is. For example, polyoxyethylene (30) sorbitol tetraisostearate [“UNIOX ST-30IS” manufactured by NOF CORPORATION], polyoxyethylene (30) sorbitol tetraoleate [UNIOX ST- manufactured by NOF CORPORATION] 30E]], polyoxyethylene (60) sorbitol tetraoleate [“UNIOX ST-60E” manufactured by NOF Corporation) and the like. As the component (A), one type or two or more types can be used.

  The content of the component (A) in the aqueous cleansing cosmetic composition of the present invention is 0.5 to 10% by mass. It is preferably from 1.5 to 8% by mass, particularly preferably from 2 to 7% by mass. If the content of the component (A) is too small, it may be difficult to sufficiently provide an effect of removing oily stains such as a makeup agent, and if the content is too large, it may be easy to permeate the eyes or have a bitter taste. Or may cause a feeling of firmness in the skin after use.

[(B) component]
The component (B) used in the present invention is a polyoxyethylene fatty acid glyceryl, in other words, a polyoxyethylene fatty acid glyceryl type nonionic surfactant, in which the hydroxyl group of glycerin is esterified with a fatty acid, and the polyoxyethylene It is a nonionic surfactant to which a group has been added.

  The constituent fatty acid residues are, for example, fatty acid residues having 6 to 18 carbon atoms. Examples of such fatty acids include saturated fatty acids such as caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, and isostearic acid, and unsaturated fatty acids such as oleic acid, linoleic acid, and linolenic acid. In addition, fatty acid residues derived from mixed fatty acids can also be used, and examples thereof include fatty acid residues such as caprylic acid / capric acid, coconut oil fatty acids, and palm oil fatty acids. If the number of carbon atoms in the fatty acid residue is too small, the effect of removing grease and dirt such as makeup may be reduced, and if the number of carbon atoms is too large, the solubility in water may be reduced.

  The average number of moles of the oxyethylene group added to one molecule of glycerin is preferably 3 to 50, particularly preferably 6 to 30, and more preferably 6 to 10. If the average number of added moles is too small, the solubility in water may decrease, and if the average number of added moles is too large, the effect of removing oily stains such as makeup may be reduced.

  As the component (B), for example, a commercially available product can be used as it is. For example, polyoxyethylene (8) (caprylic / capric acid) glyceryl [“UNIGLI MC-208” manufactured by NOF Corporation], polyoxyethylene (7) coconut oil fatty acid glyceryl [“UNIGLI manufactured by NOF CORPORATION” MK-207G], polyoxyethylene (30) coconut oil fatty acid glyceryl [“Unigri MK-230” manufactured by NOF Corporation] and the like. As the component (B), one type or two or more types can be used.

  The content of the component (B) in the aqueous cleansing cosmetic composition of the present invention is 1 to 10% by mass. It is preferably from 2 to 8% by mass, particularly preferably from 3 to 6% by mass. If the content of the component (B) is too small, it may be difficult to sufficiently provide an effect of removing grease and dirt such as a makeup material, and if the content is too large, it may easily permeate the eyes or cause bitterness. Or may cause a feeling of firmness in the skin after use.

[(C) component]
The component (C) used in the present invention is water, and is not particularly limited as long as it can be used as a raw material of cosmetics, but purified water is usually used.
The content of the component (C) in the aqueous cleansing cosmetic composition of the present invention is 75 to 90% by mass. It is preferably from 78 to 88% by mass, particularly preferably from 80 to 85% by mass. If the content of the component (C) is too small, it may easily penetrate the eyes, cause bitterness, or cause a feeling of tightness of the skin after use. If the content is too large, fats and oils such as makeup ingredients may be used. In some cases, it may be difficult to sufficiently provide the effect of removing dirt.

  In the aqueous cleansing cosmetic composition of the present invention, the total of the contents of (A), (B) and (C) is 85% by mass or more, preferably 90% by mass or more, and more preferably 90 to 99% by mass. %.

  In the aqueous cleansing cosmetic composition of the present invention, in order to make bitter taste less likely to be felt and to sufficiently exhibit the effect of removing oily stains such as makeup, the above-mentioned component (A) and component (B) are added in a mass content ratio. (A / B) is preferably adjusted in the range of 0.20 to 3, and particularly preferably adjusted in the range of 0.33 to 1.5.

The aqueous cleansing cosmetic of the present invention contains additives used in cosmetics, quasi-drugs, pharmaceuticals, etc., as necessary, in addition to the above-mentioned components, as long as the effects of the present invention are not impaired. You may. Examples of additives include lower alcohols such as ethanol and isopropanol; polyhydric alcohols such as glycerin, polyethylene glycol, propylene glycol, and 1,3-butylene glycol; sugars such as lactose and sucrose; acylmethyltaurine salts and alkyls. Anionic surfactants such as ether sulfate and amide ether sulfate; water-soluble polymers such as carboxyvinyl polymer, carboxymethylcellulose, hydroxyethylcellulose and hydroxypropylmethylcellulose; cationic such as ceramide, cholesterol and cationized cellulose. Polymers; thickening polysaccharides such as xanthan gum; organic or inorganic salts such as citrate, malate, salt; acids and alkalis as pH adjusters; parabens; preservatives; chelating agents; Of extract; vitamins; amino acids; dyes; pigments; perfume, and the like.
Further, the aqueous cleansing cosmetic of the present invention can be produced by a conventional method.

[(D) component]
The aqueous cleansing cosmetic composition of the present invention may further contain the component (D) from the viewpoint of enhancing the effect of removing oily stains such as makeup and the effect of eliminating the tightness of the skin after use.
The component (D) used in the present invention is an alkylene oxide derivative represented by the formula (1).
G- {O} (EO) a (PO) b {-(BO) c-H} ₄ (1)

  In the formula (1), G is a residue obtained by removing a hydroxyl group from an alkyl glucoside having an alkyl group having 1 to 4 carbon atoms, and includes, for example, methyl glucoside, ethyl glucoside, and n-butyl glucoside. preferable.

EO is an oxyethylene group, and PO is an oxypropylene group. a and b are the average addition mole numbers of EO (ethylene oxide) and PO (propylene oxide), respectively. a is 5 to 20, b is 1 to 10, preferably a is 5 to 15, b is 1 to 5, and particularly preferably a is 5 to 10, and b is 1 to 3.
The ratio of the content of EO (ethylene oxide) to the total content of EO (ethylene oxide) and PO (propylene oxide) is 55 to 90% by mass, preferably 60 to 85% by mass, and particularly preferably 60 to 80% by mass. % By mass. EO (ethylene oxide) and PO (propylene oxide) are randomly added.
BO is an oxybutylene group derived from 1,2-butylene oxide, c is the average addition mole number of BO (butylene oxide), and c is 1-2.

  When the aqueous cleansing cosmetic composition of the present invention contains the component (D), the content of the component (D) is preferably 0.5 to 5% by mass. Within this range, the effect of reducing the tightness and bitterness of the skin after use can be enhanced.

The aqueous cleansing cosmetic composition of the present invention can be applied in liquid form, gel form, mist form, or sheet form in which they are impregnated with cotton or non-woven fabric, and can also be applied to dosage forms such as aerosol spray and aerosol foam. can do.
The water-based cleansing cosmetic of the present invention has an excellent effect of removing makeup oil and oily stains such as sebum on the face, and also has an excellent effect of eliminating the firmness of the skin, so that it removes makeup such as lipstick, eyeliner and foundation. Can be suitably used as a makeup remover and a face massage agent.

Hereinafter, the present invention will be described more specifically with reference to Examples and Comparative Examples.
[Examples 1 to 8 and Comparative Examples 1 to 7]
Using the components (A) to (D), the component (A '), the component (B') and common additives, aqueous cleansing cosmetics were prepared with the compositions shown in Tables 1 and 2 and evaluated by the following methods. Was done. The components shown in Tables 1 and 2 are shown below.

[(A) component]
Polyoxyethylene tetraisostearate (30) sorbitol [“UNIOX ST-30IS” manufactured by NOF Corporation]
Polyoxyethylene (60) sorbitol tetraoleate [“UNIOX ST-60E” manufactured by NOF Corporation]

[(A ') component]
Polyoxyethylene monooleate (20) sorbitan ["Nonion OT-80" manufactured by NOF Corporation]

[(B) component]
Polyoxyethylene (8) (caprylic / capric acid) glyceryl [“UNIGLI MC-208” manufactured by NOF Corporation]
Polyoxyethylene (7) coconut oil fatty acid glyceryl [“UNIGLI MK-207G” manufactured by NOF Corporation]

[(B ') component]
Polyoxyethylene (60) hardened castor oil [“UNIOX HC-60” manufactured by NOF Corporation]
Polyoxypropylene (9) diglyceryl ether [“UNILUBE DGP-700” manufactured by NOF Corporation]

[(D) component]
Polyoxybutylene (1) polyoxyethylene polyoxypropylene (9.5 / random) methyl glucoside [G is a residue obtained by removing a hydroxyl group from methyl glucoside in the formula (1), a = 7.25, b = 2. 25, c is 1, and the mass ratio of EO to the total mass of EO and PO is 71 mass%]

(Common components)
The common components described in Tables 1 and 2 consist of 11 components shown in Table 3 below.

(1) Evaluation of makeup removal (lipstick)
Twenty women (aged 25 to 45) who had applied makeup (lipstick) were used as panelists, an appropriate amount of aqueous cleansing cosmetic was added to cotton, and the condition of the lips after removing the makeup was evaluated according to the following criteria. .
A total score of 20 persons was determined, and a total score of 30 or more was judged to be an aqueous cleansing cosmetic having an excellent effect of removing makeup (lipstick). In detail, the case where the total score of 20 persons is 36 or more is “と し” (excellent), the case of 30 to 35 points is “○” (good), and the case of 20 to 29 points is “△” (acceptable). ), And 19 points or less were evaluated as “×” (impossible).
2 points: When it is felt that almost all the makeup fee (lipstick) has been removed.
1 point: A case where the makeup (lipstick) was removed to some extent, or there was a makeup (lipstick) that was not removed a little.
0 point: When the user feels that the makeup (lipstick) has not been removed.

(2) Evaluation of makeup removal (eyeliner)
Twenty women (aged 25 to 45) who have applied a makeup (eyeliner) were used as panelists. A suitable amount of aqueous cleansing cosmetic was added to cotton, and the condition of the eye area after removing the makeup was evaluated according to the following criteria. did.
A total score of 20 persons was obtained, and a total score of 30 or more was judged to be an aqueous cleansing cosmetic having an excellent effect of removing makeup (eyeliner). In detail, the case where the total score of 20 persons is 36 or more is “と し” (excellent), the case of 30 to 35 points is “○” (good), and the case of 20 to 29 points is “△” (acceptable). ), And 19 points or less were evaluated as “×” (impossible).
2 points: When it is felt that almost all the makeup (eyeliner) has been removed.
1 point: When feeling that a makeup material (eye liner) could be removed to some extent or that a makeup material (eye liner) could not be removed a little.
0 point: When feeling that the makeup fee (eye liner) cannot be removed.

(3) Difficulty of seeping into eyes When 20 women (25-45 years old) who applied makeup (eyeliner) were used as panelists, a suitable amount of aqueous cleansing cosmetic was added to cotton to remove makeup. The permeation resistance to eyes was evaluated according to the following criteria.
A total score of 20 persons was determined, and a total score of 30 or more was determined to be an aqueous cleansing cosmetic that did not penetrate the eyes. In detail, the case where the total score of 20 persons is 36 or more is “と し” (excellent), the case of 30 to 35 points is “○” (good), and the case of 20 to 29 points is “△” (acceptable). ), And 19 points or less were evaluated as “×” (impossible).
2 points: When feeling that there is no permeation to eyes.
1 point: When feeling that there is a little scent on the eyes.
0 point: When it is felt that there is odor in the eyes.

(4) Bitterness Twenty women (aged 25 to 45) who have applied a makeup (lipstick) as a paneler, apply an appropriate amount of an aqueous cleansing cosmetic to cotton, and perceive the degree of bitterness when removing the makeup as described below. The evaluation was based on the following criteria.
A total score of 20 persons was determined, and a total score of 30 or more was judged to be a water-based cleansing cosmetic composition with less bitterness. In detail, the case where the total score of 20 persons is 36 or more is “と し” (excellent), the case of 30 to 35 points is “○” (good), and the case of 20 to 29 points is “△” (acceptable). ), And 19 points or less were evaluated as “×” (impossible).
2 points: When there is no bitterness.
1 point: When a bitter taste is felt.
0 point: When the person feels bitter.

(5) Tightness of the skin 20 women (25-45 years old) who have applied a makeup (foundation) as a paneler, put an appropriate amount of aqueous cleansing cosmetic on cotton, and remove the makeup from the skin condition Was evaluated according to the following criteria.
A total score of 20 persons was obtained, and a total score of 30 or more was judged to be an aqueous cleansing cosmetic having no tightness on the skin after use. In detail, the case where the total score of 20 persons is 36 or more is “と し” (excellent), the case of 30 to 35 points is “○” (good), and the case of 20 to 29 points is “△” (acceptable). ), And 19 points or less were evaluated as “×” (impossible).
2 points: When the skin does not feel tight.
1 point: When the skin feels a little tight.
0 point: When the skin feels tight.

  As is evident from the results shown in Table 1, the aqueous cleansing cosmetics of Examples 1 to 8 are excellent in the effect of removing oily stains such as makeup, hardly permeate the eyes during use, and hardly feel bitterness. It was a water-based cleansing cosmetic that was less likely to give a sense of firmness later.

On the other hand, with the aqueous cleansing cosmetics of Comparative Examples 1 to 7, sufficient performance was not obtained.
In Comparative Example 1, because the component (A) was not added, bitterness was felt, and the evaluation of the difficulty in permeating the eyes and the feeling of tightness of the skin after use was reduced.
In Comparative Example 2, since a nonionic surfactant different from the component (A) was used, the effect of removing the makeup material could not be sufficiently provided, and the evaluation of difficulty in permeating eyes and bitterness was reduced.
In Comparative Example 3, since a nonionic surfactant different from the component (B) was used, the effect of removing the makeup material could not be sufficiently provided.
In Comparative Example 4, since a nonionic surfactant different from the component (B) was used, the effect of removing the makeup material could not be sufficiently provided, and the evaluation of bitterness was reduced.
In Comparative Example 5, since the component (A) was added in an amount exceeding 10% by mass, the evaluation of the difficulty in permeating the eyes, the bitterness, and the feeling of tightness of the skin after use was reduced.
In Comparative Example 6, since the component (B) was added in an amount exceeding 10% by mass, permeation and bitterness to the eyes, and a firm feeling of the skin after use were felt.
In Comparative Example 7, since the component (C) was added in an amount exceeding 90% by mass, the effect of removing the makeup material could not be sufficiently provided.

Claims (2)

(A) 0.5 to 10% by mass of a tetrafatty acid polyoxyethylene sorbitol,
(B) 1 to 10% by mass of polyoxyethylene fatty acid glyceryl and (C) 75 to 90% by mass of water
Aqueous cleansing cosmetics, wherein the total content of (A), (B) and (C) is 85% by mass or more. The aqueous cleansing cosmetic according to claim 1, further comprising (D) an alkylene oxide derivative represented by the formula (1) in an amount of 1 to 10% by mass.
G- {O} (EO) a (PO) b {-(BO) c-H} ₄ (1)
[In the formula (1), G is a residue obtained by removing a hydroxyl group from an alkyl glucoside having an alkyl group having 1 to 4 carbon atoms. EO is an oxyethylene group, PO is an oxypropylene group, a and b are the average addition mole numbers of EO and PO, respectively, a is 5 to 20, b is 1 to 10, and EO and PO are The ratio of the content of EO to the total content of is 55 to 90% by mass, and EO and PO are randomly added. BO is an oxybutylene group, c is the average number of moles of BO added, and c is 1-2. ]