JP2018145112A - Pack cosmetic for washout - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pack cosmetic that can effectively remove pore stains and has a high moisturizing effect, and has no roughness during pack drying, and also has no sliminess during rinsing.SOLUTION: A pack cosmetic contains clay mineral (component A) of 30-60 mass%, amino acid-based anion surfactant (component B) of 0.5-5 mass%, liquid oil solution (component C) of 2-8 mass%, and a copolymer containing a structure represented by the formula (1) and at least one structure of the following formulae (2)-(3) as constitutional units (component D) of 0.05-0.5 mass%.SELECTED DRAWING: None

Description

  The present invention relates to a washout pack cosmetic containing a high amount of clay mineral.

In general, pack cosmetics are used about 1 to 2 times a week as a special care product separately from daily skin care, and are mainly intended to condition the skin such as the face and body. Pack cosmetics have the main functions of “Moisturize and condition the skin (moisturizing and activating the skin)” and “Preparing the skin while removing dirt on the skin (removing the skin surface, removing moisture from the skin, Activation) ”. Since these pack cosmetics remove stains that are difficult to remove by daily skin care and also have a skin conditioning effect, there is an increasing demand for skin care.
Patent Document 1 discloses a pack cosmetic containing a cationic polymer in order to improve the skin feel in addition to polyvinyl alcohol and ethanol. The cosmetic is excellent in usability, but the effect of removing dirt on the skin is insufficient.

In pack cosmetics, it is known that blending of clay minerals is effective to enhance the effect of removing pore dirt. In addition to removing dirt on the skin using the adsorption force of mud, skin conditioning effects due to the addition of minerals can be expected. However, when a high amount of clay mineral is blended in order to sufficiently remove the dirt on the skin, there is a possibility that the washability may be deteriorated or, in some cases, it may be felt as a tight feeling after use. In order to improve the feeling of firmness of the skin after use, an oil agent is blended and relaxed. For example, Patent Document 2 discloses a pack cosmetic containing a clay mineral, an anionic surfactant, an oil component, a water-soluble polymer compound, and a polyhydric alcohol. This pack cosmetic is highly blended with clay minerals to give the skin freshness and good washability. However, when the oil agent is blended in a high amount, stickiness and sliminess may occur during rinsing, and the actual feeling of the dirt removal effect may be diminished, or the pack agent may become wrinkled when dried.
Accordingly, there has been a demand for pack cosmetics that have a high soil removal effect due to the high blending of clay minerals, have a moisturizing effect, do not have a wrinkle when the pack agent is dried, and do not have stickiness or moisture when rinsed.
Therefore, pack cosmetics that have a high dirt removal effect due to the high blending of mud, have a moisturizing effect, do not wrinkle when the pack dries, and do not become dull when rinsed are not sufficiently achieved.

JP 2014-073977 A JP 2006-206448 A

  An object of the present invention is to provide a pack cosmetic that is excellent in removing dirt from the pores and moisturizing effect, has no wrinkle at the time of drying the pack, and has no moisture at the time of rinsing.

When research was repeated in order to solve the above-mentioned problems, the object was achieved by combining a clay mineral, an amino acid anionic surfactant, a liquid oil at room temperature, and a specific copolymer in a specific ratio. The present inventors have found that pack cosmetics can be obtained and have completed the present invention.
That is, the pack cosmetic of the present invention comprises a clay mineral (component A), an amino acid anionic surfactant (component B), a liquid oil agent (component C), and a structure represented by the following formula (1): A pack cosmetic containing a copolymer (component D) containing at least one of the structures represented by formulas (2) to (3) as a structural unit, wherein the clay mineral (A Component) is 30 to 60% by mass, the amino acid anionic surfactant (component B) is 0.5 to 5% by mass, the oily component (C component) is 2 to 8% by mass, a specific copolymer ( D component) is contained in a proportion of 0.05 to 0.5% by mass.

(In formula (1), R ¹ and R ² each independently represents an alkyl group having 1 to 3 carbon atoms.)
(In formulas (2) and (3), R ³ and R ⁴ each independently represent a hydrogen atom or a methyl group.)

  In a preferred embodiment, the clay mineral (component A) is a mixture of a water-swellable clay mineral (A1) and a non-water-swellable clay mineral (A2), and the liquid oil is an ester oil or vegetable oil. It is a mixture of more than one kind.

  The pack cosmetic of the present invention has a feeling of high dirt removal effect, has a moisturizing effect, has no feeling of wrinkle when the pack is dried, and has a feeling of use that does not become dull when rinsed.

  The pack cosmetic of the present invention comprises the following clay mineral (component A) (hereinafter sometimes referred to as compound A and component A), amino acid anionic surfactant (component B) (hereinafter referred to as compound B and component B). Etc.), liquid oil (component C) (hereinafter also referred to as compound C, component C, etc.), and the structure represented by formula (1) and the following formulas (2) to (3) Including a copolymer (component D) (hereinafter sometimes referred to as compound D, component D, etc.) containing at least one of the structures represented as a structural unit, and optionally containing a solvent such as an additive and water. Including. Hereinafter, these will be sequentially described.

(Clay mineral (component A))
The clay mineral (component A) used in the pack cosmetic of the present invention is a silicate mineral, talc, and mica, and at least one of them is used. Examples of silicate minerals include phyllosilicate minerals (kaolin group, montmorillonite group, clay mica group, chlorite group, serpentine group, etc.), tectosilicate minerals (zeolite group, etc.) and the like. Specific examples of clay minerals include pyrophyllite, talc, chlorite, chrysotile, antigolite, lizardite, kaolinite, decaitite, nacrite, halosite, montmorillonite, nontronite, saponite, sauconite, pentonite, Sodalite group (sodalite, mesolite, scolesite, Thomsonite, etc.), pyroxenite group (Pyroxene, zeolitite, exfoliate, etc.), zeolite (calcite, zeolithite, asphaltite, chabazite, gmelin Zeolite) and light.

Clay minerals are classified into water-swellable clay minerals (hereinafter sometimes referred to as compound A1 and A1 components) and non-water-swellable clay minerals (hereinafter sometimes referred to as compound A2 and A2 components) depending on their properties. .
The water-swellable clay mineral is a clay mineral mainly composed of magnesium silicate / aluminum and magnesium silicate / sodium. In general, the water-swellable clay mineral is preferably a smectite group mineral, and examples thereof include montmorillonite, hectorite, and saponite.
The clay mineral may be a natural product or a synthetic product.
In the pack cosmetic of the present invention, it is preferable to use the water-swellable clay mineral (A1) and the non-water-swellable clay mineral (A2) in combination in order to further improve the skin conditioning effect and the washability after use. When used in combination, the mass ratio (A1 / A2) between the water-swellable clay mineral and the non-water-swellable clay mineral is preferably in the range of 1/4 to 1/30, more preferably 1/5 to 1. / 25. When the mass ratio is less than 1/30, the moisturizing effect is weakened and the dryness is liable to occur. When the mass ratio is larger than 1/4, the effect of removing pore dirt is weakened.

(Amino acid anionic surfactant (component B))
The amino acid anionic surfactant (component B) used in the pack cosmetic of the present invention has a lipophilic group and a hydrophilic group in the molecule, and has a skeleton derived from an amino acid or an amino acid analog compound in the hydrophilic group portion. Means an anionic surfactant that is recognized as an amino acid surfactant in the cosmetics field.
Examples of the component B are preferably those having a skeleton such as glutamic acid, aspartic acid, glycine, alanine, sarcosine, and taurine, and those having these skeletons and having an acyl group having 10 to 18 carbon atoms. More preferred. Although not particularly limited, those having a taurine skeleton or a glutamic acid skeleton are more preferable in consideration of the moisturizing effect after use, and those having these skeletons and having a palm oil fatty acid residue as an acyl group are particularly preferable.

(Liquid oil (component C))
The oil agent (component C) used in the pack cosmetic of the present invention is an oily component that is liquid at normal temperature. For example, animal and vegetable fats and oils and hydrocarbon oils obtained from the natural world, synthetic oils that are liquid at room temperature, and the like can be mentioned. Examples of the oil include liquid paraffin, liquid isoparaffin, squalane, olive oil, rice germ oil, soybean oil, sesame oil, rapeseed oil, sunflower oil, cod liver oil, ester oil (octyl palmitate, glyceryl tricaprate, etc.) and the like. Among these, ester oils and vegetable oils are preferable from the viewpoint of the feel during rinsing. Furthermore, in consideration of the moisturizing effect and the coating feel after use, it is preferable to use two or more ester oils in combination.

(Copolymer (component D) containing at least one of the structure represented by formula (1) and the structure represented by formulas (2) to (3)) as a constituent unit
The copolymer (component D) used in the pack cosmetic of the present invention comprises at least one of a structure represented by the following formula (1) and a structure represented by the following formulas (2) to (3) as a structural unit. As a copolymer.

(In formula (1), R ¹ and R ² each independently represents an alkyl group having 1 to 3 carbon atoms.)

(In formulas (2) and (3), R ³ and R ⁴ each independently represent a hydrogen atom or a methyl group.)

  Examples of the component D include a copolymer of dimethyldiallylammonium chloride and (meth) acrylamide and / or (meth) acrylic acid. Specifically, polyquaternium-7, polyquaternium-22, and polyquaternium-39 are preferable.

Although the content ratio of the structure represented by Formula (1) in D component is arbitrary, it is preferable that it is normally 30 mol% of D component from the point which does not feel the moisturizing effect and the sliminess at the time of a rinse. More preferably, it is 20-50 mol%.
The component D includes a structure other than the structure represented by the formula (1), the structure represented by the formula (2), and the structure represented by the formula (3) as long as the object of the present invention is not significantly impaired. However, the sum of the content ratios of the structure represented by the formula (1), the structure represented by the formula (2), and the structure represented by the formula (3) is usually 90 mol% or more, preferably Is 95 mol% or more, more preferably 99 mol% or more.

  The weight average molecular weight of the component D is preferably in the range of 10,000 to 300,000, more preferably in the range of 100,000 to 200,000, from the viewpoints of luster during rinsing and ease of blending. In the present invention, “weight average molecular weight” refers to that measured by gel permeation chromatography (GPC).

(Additive)
Additives that can be included in the pack cosmetic of the present invention can be contained in the pack cosmetic within a range that does not impair the effects of the present invention. Examples of additives include polyhydric alcohols such as glycerin, diglycerin, polyethylene glycol, sorbitol, maltitol, and isomaltitol; sugars such as lactose, fructose, sucrose, maltose, trehalose, and isomaltoligosaccharide; beef tallow, pork Natural oils and fats such as fats; waxes such as beeswax and carnauba wax; silicone derivatives such as highly polymerized dimethylpolysiloxane, polyether-modified dimethylpolysiloxane, and amino-modified dimethylpolysiloxane; ceramide, cholesterol, protein derivatives, lanolin, lanolin derivatives, Oily bases such as lecithin; amphoteric surfactants such as amide amino acid salt and amidopropyldimethylaminoacetic acid betaine; polyoxyethylene alkyl ether, fatty acid ester of polyethylene glycol, polyoxye Non-ionic surfactants such as ren hydrogenated castor oil, polyglycerin fatty acid ester, polyoxyethylene glycerin fatty acid ester, glycerin monofatty acid ester, alkylpolyglucoside, alkanolamide; cationic surfactants such as alkyltrimethylammonium chloride; alkyl Semipolar surfactants such as dimethylamine oxide; organic or inorganic salts such as pyrrolidone carboxylate, citrate, malate, sodium chloride; acids and alkalis as pH adjusting agents; bactericides; chelating agents; antioxidants A blood circulation promoter; an ultraviolet absorber; an ultraviolet scattering agent; a natural extract derived from animals and plants; ascorbic acid and its derivatives; flavonoids and derivatives such as anthocyanins; vitamins; amino acids; Can be mentioned.

(Pack cosmetic)
The pack cosmetic of the present invention has a structure represented by clay mineral (component A), amino acid anionic surfactant (component B), liquid oil (component C), and formula (1) as described above. A copolymer (component D) containing at least one structure of formulas (2) to (3) as a structural unit is contained in a specific ratio, and if necessary, an additive, a solvent (for example, water) and the like.
The component A is contained in the pack cosmetic in an amount of 30 to 60% by mass, preferably 30 to 55% by mass, and more preferably 35 to 50% by mass. When the amount is less than 30% by mass, the effect of removing pore dirt is weakened, and it becomes easy to cause luster when rinsing. When it exceeds 60 mass%, it is easy to feel the wrinkle at the time of pack drying, and also a moisturizing effect becomes weak. A component may be used independently and may use 2 or more types together. Furthermore, as described above, it is more preferable that the water-swellable clay mineral (A1) and the non-water-swellable clay mineral (A2) are contained at a specific ratio.
Component B is contained in the pack cosmetic in an amount of 0.5 to 5% by mass, preferably 1 to 4.5% by mass, and more preferably 1.5 to 4% by mass. If it is less than 0.5% by mass, it becomes slippery at the time of rinsing, resulting in the removal effect of pore dirt and the roughness at the time of drying the pack. When it exceeds 5% by mass, the moisturizing effect is weakened. B component may be used independently and may use 2 or more types together.
Component C is contained in the pack cosmetic in an amount of 2 to 8% by mass, preferably 3 to 7% by mass, and more preferably 4 to 6% by mass. If the amount is less than 2% by mass, the moisturizing effect is weakened, and the pack is dull when dry, resulting in weak pore dirt removal effect. When it exceeds 8% by mass, it becomes easy to cause a stickiness at the time of rinsing by stickiness, and it becomes difficult to feel the effect of removing pore dirt. It is preferable to use two or more C components in combination.
The component D is contained in the pack cosmetic in an amount of 0.05 to 0.5% by mass, preferably 0.1 to 0.3% by mass, and more preferably 0.15 to 0.25% by mass. If it is less than 0.05% by mass, the pack will become stiff during drying and the moisturizing effect will be weakened. When it exceeds 0.5 mass%, it becomes easy to produce a stickiness and the removal effect of pore dirt becomes weak. D component may be used independently and may use 2 or more types together.

  As for the cosmetics of this invention, each content of A-D component exists in said specific range, and mass ratio (A / D) of A component and D component exists in the range of 100-600. It is preferable. The mass ratio (A / D) is more preferably 140 to 500, still more preferably 200 to 400. When the mass ratio (A / D) is less than 100, the effect of removing pore dirt is weakened, and it becomes easy to cause a dullness during rinsing. On the other hand, if it is larger than 600, the moisturizing effect is weakened, and it becomes easy for the pack to become stiff during drying.

Next, the present invention will be described in more detail by way of examples.
[Examples 1-5 and Comparative Examples 1-6]
Components A to D, B ′ component, C ′ component and common additive components (Table 1) were prepared as pack cosmetics with the compositions shown in Table 2, and evaluated by the following methods.

[D component]
Dimethyldiallylammonium chloride / acrylamide copolymer liquid (trade name “MERQUAT 550” (Nippon Lubrizol, 9% aqueous solution))

  Twenty men and women (25 to 45 years old) were panelists, and the resulting pack cosmetic was applied to the face and washed away 10 minutes after application. At that time, evaluations were obtained for each item of (1) Stiffness at the time of drying the pack agent, 4) Slackness at the time of rinsing, (3) Removal of pore dirt, and (4) Moisturizing effect. The results are shown in Table 2. In addition, the ratio of the component in Table 2 is the mass%. The evaluation criteria for each evaluation item are shown below.

(1) Stiffness at the time of drying the pack agent 2 points: No wrinkle was felt at the time of drying the pack agent.
1 point: I felt a little sticky when the pack was dry.
0 points: Feeling stiff when the pack was dry.
The total score of 20 people was calculated | required and it determined as follows.
A: The total score is 35 points or more, and 0 panelists evaluated as 0 points. It is a pack cosmetic with no stickiness.
○: The total score is 30 or more and less than 35, or the total score is 35 or more and 0 points, and the number of panelists is 1 or more and 2 or less. It is a pack cosmetic with almost no wrinkles.
Δ: The total score is 20 points or more and less than 30 points. It is a somewhat cosmetic pack cosmetic.
X: The total score is less than 19 points. It is a sticky cosmetic.

(2) Slack at the time of rinsing 2 points: I did not feel any slickness at the time of rinsing.
1 point: I felt a little slimy when rinsing.
0 points: I felt slippery when rinsing.
The total score of 20 people was calculated | required and it determined as follows.
A: The total score is 35 points or more, and 0 panelists evaluated as 0 points. It is a pack cosmetic that does not get wet during rinsing.
○: The total score is 30 or more and less than 35, or the total score is 35 or more and 0 points, and the number of panelists is 1 or more and 2 or less. It is a pack cosmetic with almost no stickiness when rinsed.
Δ: The total score is 20 points or more and less than 30 points. It is a pack cosmetic with a little stickiness when rinsed.
X: The total score is less than 19 points. It is a pack cosmetic with a sliminess when rinsed.

(3) Removal of pore dirt 2 points: I felt that dirt on the pores was firmly removed.
1 point: I felt that the dirt on the pores was removed.
0 point: I felt that the dirt on the pores was not removed much.
The total score of 20 people was calculated | required and it determined as follows.
A: The total score is 35 points or more, and 0 panelists evaluated as 0 points. It is a pack cosmetic having a very excellent pore dirt removing effect.
○: The total score is 30 or more and less than 35, or the total score is 35 or more and 0 points, and the number of panelists is 1 or more and 2 or less. It is a pack cosmetic having an excellent pore dirt removing effect.
Δ: The total score is 20 points or more and less than 30 points. It is a pack cosmetic having a slight pore dirt removing effect.
X: The total score is less than 19 points. It is a pack cosmetic with insufficient removal of pore dirt.

(4) Moisturizing effect 2 points: I felt that the skin was moistened.
1 point: I felt that my skin was slightly moistened.
0 points: I felt my skin was not moistened.
The total score of 20 people was calculated | required and it determined as follows.
A: The total score is 35 points or more, and 0 panelists evaluated as 0 points. : A pack cosmetic that provides a very excellent moisturizing feeling.
○: The total score is 25 or more and less than 35, or the total score is 35 or more and 0 points, and the number of panelists is 1 or more and 2 or less. : A pack cosmetic that provides an excellent moisturizing feeling.
Δ: The total score is 15 points or more and less than 25 points. : A pack cosmetic with a slight moisturizing feeling.
X: The total score is less than 15 points. : A pack cosmetic that does not provide a sufficient moisturizing feeling.

  As is apparent from the results shown in Table 2, the pack cosmetics of Examples 1 to 5 have a real feeling of high dirt removal effect, have a moisturizing effect, do not wrinkle during drying, and do not become slippery when rinsed. It was a thing.

On the other hand, in the pack cosmetics of Comparative Examples 1 to 6, sufficient performance was not obtained.
In Comparative Example 1, since the blending amount of the component A was small, it felt slippery at the time of rinsing, and the effect of removing pore dirt was not obtained.
In Comparative Example 2, since the B component was not blended, the effect of removing luster and pore dirt during rinsing occurred, and in Comparative Example 3, since an anionic surfactant different from B component was used, rinsing was performed. I felt the wetness of the time and the dryness of the dryness, and no moisturizing effect was obtained.
In Comparative Example 4, since the component C was not blended, it was wrinkled during drying and a moisturizing effect was not obtained.
In Comparative Example 5, the component D was not blended, and a polymer different from the component D was used, so that the dryness became stiff and the pore dirt removing effect and the moisturizing effect could not be obtained.
In Comparative Example 6, since the blending amount of the D component is less than 0.1% by mass and the value of the mass ratio (A / D) between the A component and the D component is more than 600, there is a wrinkle at the time of drying, and the moisture retention The effect was not obtained.
As described above, the pack cosmetic of the present invention has an excellent effect of removing pore dirt and a moisturizing effect, has no wrinkle at the time of drying, and does not have a dullness at the time of rinsing.

Claims (1)

30-60 mass% of clay mineral (A component), 0.5-5 mass% of amino acid anionic surfactant (B component), 2-8 mass% of liquid oil agent (C component), and the following formula Pack makeup containing 0.05 to 0.5% by mass of a copolymer (component D) containing the structure represented by (1) and at least one of the following formulas (2) to (3) as structural units Fee.
(In formula (1), R ¹ and R ² each independently represents an alkyl group having 1 to 3 carbon atoms.)
(In formulas (2) and (3), R ³ and R ⁴ each independently represent a hydrogen atom or a methyl group.)