JP4152310B2 - Cosmetics for cleaning - Google Patents

Description

The present invention relates to a cosmetic for cleaning which can remove dirt and keratin that has been worn and gently massaged on the skin.

Various proposals have been made as cosmetics for removing unnecessary keratin. For example,
(A) a method using a keratolytic agent such as α-hydroxy acid, or a salt, amide or ester thereof,
(B) Polyethylene-higher alkyl ether, mono-higher fatty acid polyethylene glycol,
A method using a surfactant such as mono-higher fatty acid polyoxyethylene sorbitan (JP-A-2)
000-264831, Patent Document 1),
(C) A method using a keratin softener such as lactic acid, its salt, or urea (Japanese Patent Laid-Open No. 11-228340)
Gazette, patent document 2),
(D) Method using epidermal cell keratinization promoter (Japanese Patent Laid-Open No. 10-130134, Patent Document 3)
Etc.

It is also known to use a cationic surfactant as a skin external preparation. For example, JP-A-8-283145 (Patent Document 4) discloses a composition containing a cationic surfactant, a fatty acid, an oil agent, and water and having a pH of 4 or less. Examples of cationic surfactants are cetyltrimethylammonium bromide, behenyltrimethylammonium chloride,
Distearyldimethylammonium chloride, tricetylmethylammonium chloride,
Stearyldimethylbenzylammonium chloride and the like.

As an external preparation for skin, JP-A-8-208423 (Patent Document 5) discloses an external preparation for skin containing a lipid bilayer containing proline, leucine or isoleucine and a water-soluble polymer. . Examples of the water-soluble polymer are polyacrylic acid or a salt thereof, carboxyvinyl polymer or a salt thereof, hydroxyethyl cellulose, carboxymethyl cellulose or a salt thereof, hyaluronic acid or a salt thereof.

JP-A-10-273434 (Patent Document 6) discloses a carboxyvinyl polymer,
A skin cleanser comprising a monoalkyltrimethylammonium salt or a dialkyldimethylammonium salt is shown. Since this skin cleansing agent generates plaque-like aggregates when applied to the skin, the process of removing dirt is visually felt. In the invention of this publication, there is a description that various components may be contained in addition to the above essential components. One of these optional components is a surfactant (lipophilic nonionic surfactant, anionic surfactant, cationic surfactant, amphoteric surfactant), of which as a cationic surfactant, paragraph 0032 Poly (N, N′-dimethyl-3,5-methylenepiperidinium chloride),
Alkyl pyridinium salts such as cetylpyridinium chloride, alkyl quaternary ammonium salts, alkyl dimethyl benzyl ammonium salts, alkyl isoquinolium salts, dialkyl morpholinium salts, POE alkyl amines, alkyl amine salts, polyamine fatty acid derivatives, amino alcohol fatty acid derivatives, Examples thereof include benzalkonium chloride and benzethonium chloride.
JP 2000-264831 A Japanese Patent Laid-Open No. 11-228340 Japanese Patent Laid-Open No. 10-130134 JP-A-8-283145 JP-A-8-208423 JP-A-10-273434

(A) keratolytic agent, (B) surfactant mentioned above as cosmetics to remove keratin, (
C) keratin softening agent and (d) epidermal keratinization promoter, etc. are effective for removing keratin, but they remove not only old unnecessary keratin, but also keratin at the stage before aging. Tend to cause excessive peeling. In order to obtain moderate exfoliating properties, the amount of active ingredient must be finely controlled, but there are individual differences in human skin.
Control that suits the person is not always easy. Moreover, even if the keratin is removed by these methods, there is no scale for determining whether the keratin has been removed. Therefore, the operation is psychologically repeated twice or three times and eventually tends to result in excessive peeling.

Among the documents cited above, JP-A-8-283145 (Patent Document 4) uses a quaternary ammonium salt-based cationic surfactant, JP-A-8-208423 (Patent Document 5). Although the use of water-soluble polymers such as carboxyvinyl polymer has been shown, there is no disclosure about the combined use of a quaternary ammonium salt cationic surfactant and a carboxyvinyl polymer. Further, depending on the inventions of these publications, even if lightly massaged on the skin, the eraser scraps as in the present invention are not formed.

Of the references cited above, the skin cleanser disclosed in JP-A-10-273434 (Patent Document 6) is a carboxyvinyl polymer (in this publication, carboxyvinyl polymer is polymerized with acrylic acid and is highly acidic. Used in the broad sense of molecular compounds)
It includes both quaternary ammonium salts (monoalkyltrimethylammonium salts or dialkyldimethylammonium salts). The skin cleansing agent of this prescription has the advantage that the process of removing dirt is visually felt because of the occurrence of plaque-like aggregates when applied to the skin.

However, this skin cleanser
(1) When applied to the skin, despite the presence of old keratin and dirt, there is a tendency that it is not reliable enough to withstand the market because it does not become a paste at a rate of 1 or 2 in 10 people. That there is,
(2) If stored at low temperatures (eg around 5 ° C), white precipitates may be produced or become pure white, and both the marketer and the purchaser may have doubts about the product value. thing,
(3) Even if trouble does not occur when conditions are good, depending on the season, region, or temperature conditions during use, the percentage that does not become a paste when applied to the skin may increase or the transparency may be impaired. ,
Problems such as these have not been solved sufficiently, and there is still room for improvement as a product used by an unspecified number of people under various conditions.

According to the study of the present inventors, the above problems are considered to be due to limitations when a monoalkyltrimethylammonium salt or a dialkyldimethylammonium salt is used as an essential component of the counterpart of the carboxyvinyl polymer.

Under such a background, the present invention makes it possible to remove dirt and old keratin at the same time when it is applied to the skin and lightly massaged, and at the same time, whether or not the cleaning has been completed. The purpose of the present invention is to provide a cosmetic for washing that is not likely to cause trouble even when it is put on the market or used by an unspecified number of people under various conditions.

The cleaning cosmetic of the present invention is
A cosmetic composition for cleaning, which is made of an aqueous liquid, and when it is lightly massaged on the skin, it becomes an eraser scrap, and at the same time removes dirt and old keratin,
The aqueous liquid is at least one selected from the group consisting of a carboxyl group-containing acidic polymer (A) and a quaternary alkylpyridinium salt, a quaternary alkylimidazolinium salt, and a quaternary alkylmorpholinium salt. Containing a nitrogen-containing heterocyclic compound-based cationic surfactant (B) as an essential component,
Containing substantially no non-heterocyclic compound-based cationic surfactant; and
The content of the carboxyl group-containing acidic polymer (A) and the nitrogen-containing heterocyclic compound-based cationic surfactant (B) in the entire aqueous liquid is 0.2 to 5% by weight and 0.2 to 10% by weight, respectively. It is what.

The cleaning cosmetic of the present invention skillfully utilizes the ionic balance. When the cosmetic for cleaning of the present invention is applied to the skin and lightly massaged, dirt and old keratin become eraser scraps and drop off, resulting in a smooth skin. At this time, unnecessary keratin that causes dull skin and dirt behind the pores can be removed cleanly, but excessive peeling that removes keratin more than necessary is not performed, so it is gentle to the skin.

In this way, it is possible to achieve cleansing of the skin just by applying a light massage on the skin.
It is very preferable in terms of usability. In addition, it can be used as a slimming agent for areas of concern by massage. In addition, since unnecessary keratin is eliminated, if a lotion or essence that is usually used thereafter is applied, they penetrate deeper and the purpose of makeup can be achieved more reliably.

It should be noted that the degree of removal of dirt and old keratin can also be determined by the color of the residue in the form of scraper of eraser. And when there is no dirt or old keratin, rubbing does not become a waste,
You can immediately know if the cleaning is complete. Thus, it is one of the effects of the present invention that the removal of dirt and the like can be visually recognized.

In addition, since the cleaning cosmetic of the present invention uses the nitrogen-containing heterocyclic compound-based cationic surfactant (B) as the other component of the carboxyl group-containing acidic polymer (A), (1) the individual of the user Regardless of the difference, as long as there is old keratin and dirt, it will become a paste when it is applied to the skin and will be cleaned, so it must be reliable enough to be sold on the market. (2) Low temperature (for example 5 (3) No white deposits or whitening occurs even when stored at around (° C).
Depending on the season, the region, or the temperature conditions during use, there are excellent effects such as an increase in the percentage that does not become a paste when applied to the skin, and a loss of transparency. In addition, the cleaning cosmetic of the present invention has an advantage that it is difficult for the user to feel skin irritation.

  The present invention will be described in detail below.

<Carboxyl group-containing acidic polymer (A)>
As carboxyl group-containing acidic polymer (A), carboxyvinyl polymer, (meth)
At least one (meth) acrylic acid polymer selected from the group consisting of an acrylic acid- (meth) acrylate copolymer and poly (meth) acrylic acid is preferably used. These (meth) acrylic acid-based polymers may contain monomer units other than (meth) acrylic monomer units such as vinyl ester monomer units and styrene monomer units. In addition, as the carboxyl group-containing acidic polymer (A), itaconic acid, maleic acid or a half ester or anhydride thereof, fumaric acid or a half ester thereof,
A homopolymer or copolymer of at least one monomer selected from crotonic acid can also be used. Examples of the other monomer unit in the case of the copolymer include the above-mentioned (meth) acrylic acid unit, vinyl ester monomer unit, and styrene monomer unit.

The carboxyl group-containing acidic polymer (A) desirably has a 0.5 wt% aqueous solution having a pH of 6 or less (usually pH 4 to 1, preferably pH 3 to 1.5). When the pH is in such a range, the aqueous liquid becomes stable and maintains stability even when stored at low temperatures.

<Nitrogen-containing heterocyclic compound-based cationic surfactant (B)>
The nitrogen-containing heterocyclic compound-based cationic surfactant (B) is at least one selected from the group consisting of quaternary alkyl pyridinium salts, quaternary alkyl imidazolinium salts and quaternary alkyl morpholinium salts. Is used. As salts, Cl salt, Br salt, I salt, CH ₃ S
O ₄ salts and the like can be mentioned, but usually Cl salts or Br salts are mainly used. Different salts (for example, Br salt and Cl salt) can be used in combination.

At least one of the alkyl groups has 8 to 28 carbon atoms, especially 10 to 24 carbon atoms.
In particular, a higher alkyl group of 12 to 22 is preferable. In particular, a lauryl group (12 carbon atoms), a cetyl group (14 carbon atoms), a palmityl group (16 carbon atoms), a stearyl group (18 carbon atoms), a behenyl group (22 carbon atoms), and a cocoyl group are useful. The higher alkyl group is
In some cases, one double bond may be included.

The aqueous liquid is a non-heterocyclic compound-based cationic surfactant (for example, an alkyl group having 8 carbon atoms).
No. 28 higher alkyltrimethylammonium salt or dihigher alkyldimethylammonium salt) is required to be substantially not contained. Nitrogen-containing heterocyclic compound-based cationic surfactant
This is because the coexistence of the non-heterocyclic compound-based cationic surfactant with respect to (B) acts negatively in the points (1) to (4) described above in the description of Patent Document 6. Here, “substantially” means that the case where the nominal amount coexists is included in the present invention.
Nominal amount is such a small amount that the effect is not obtained when a non-heterocyclic compound type cationic surfactant is used alone as a cationic surfactant (for example, the proportion of the total amount in the aqueous liquid is 0.1% by weight)
Less than 0.05% by weight, in particular 0.03% by weight or less, especially 0.02% by weight or less).

<Content of each component>
The content of the carboxyl group-containing acidic polymer (A) and the nitrogen-containing heterocyclic compound-based cationic surfactant (B) in the aqueous liquid is 0.2 to 5% by weight (preferably 0.5 to 5% by weight), respectively.
, Especially 1 to 4% by weight), 0.2 to 10% by weight (preferably 0.5 to 7% by weight, especially 1 to 5% by weight). When the amount of the carboxyl group-containing acidic polymer (A) is too small, the aqueous liquid does not easily become viscous. Therefore, when it is applied to the skin and massaged, it is difficult to form eraser scraps, resulting in insufficient cleaning effect. On the other hand, an excessive amount of the carboxyl group-containing acidic polymer (A) may result in a part that does not dissolve during preparation of the aqueous liquid, and it tends to become a gel and simply extend when applied to the skin, not an eraser scrap. There is. If the amount of the nitrogen-containing heterocyclic compound-based cationic surfactant (B) is insufficient, the cleaning effect is insufficient, and the excessive amount makes it difficult to prepare an aqueous liquid and causes skin irritation.

<Other ingredients>
The cleaning cosmetic of the present invention comprises the above carboxyl group-containing acidic polymer (A
) And nitrogen-containing heterocyclic compound-based cationic surfactant (B), if necessary, moisturizer (
Polyhydric alcohol, hyaluronic acid, etc.), plant extracts (herbal extracts, etc.), vitamins, water-soluble polymers (including chitosan, sericin), oil components (oils, waxes, squalane, jojoba oil, etc.), high grade It may contain additives such as alcohol, ceramic fine powder, colorants and pigments (natural pigments, etc.), preservatives, fragrances, pH regulators, thixotropic regulators, water-soluble solvents (ethanol, isopropanol, etc.) . In particular, the incorporation of a humectant is useful. Some plant extracts have a moisturizing action. In addition, other keratolytic agents such as α-hydroxy acid may be contained as long as the amount of the present invention is not impaired.

<Preparation of aqueous liquid>
The cleaning cosmetic of the present invention may contain water (an organic solvent miscible with water) from the above carboxyl group-containing acidic polymer (A) and the nitrogen-containing heterocyclic compound-based cationic surfactant (B). )
It is prepared by dissolving it in an aqueous solution (aqueous solution). The order of dissolution of the carboxyl group-containing acidic polymer (A) and the nitrogen-containing heterocyclic compound-based cationic surfactant (B) in water is arbitrary, and both may be dissolved in water at the same time. Then, both aqueous solutions may be mixed, or the other may be added to one aqueous solution and dissolved. Usually, an aqueous solution of the carboxyl group-containing acidic polymer (A) is prepared, and then the aqueous solution of the nitrogen-containing heterocyclic compound cationic surfactant (B) is mixed with the aqueous solution, or the nitrogen-containing heterocyclic compound-based cation is mixed. It is practical to prepare an aqueous solution of the surfactant (B) and then mix an aqueous solution of the carboxyl group-containing acidic polymer (A) with the aqueous solution. When preparing an aqueous liquid containing both components (A) and (B), dissolution may be insufficient. At that time, for example, the solution is heated to about 70 ± 10 ° C. with stirring to complete dissolution. At the same time, sterilization is preferred. If bubbles remain after preparation of the aqueous liquid, it is desirable to take measures to defoam by decompression while hot.

<container>
Since the cleaning cosmetic composition of the present invention comprising the above aqueous liquid is viscous, it is advantageous to commercialize it by filling a squeeze container such as a tube container or a container equipped with a hand pump mechanism. .

<How to use>
When using the cleaning cosmetic of the present invention, an appropriate amount of the contents are discharged from the container onto the palm and rubbed against the skin so that it is lightly massaged. For example, when applying to the face, after washing the face, wipe off the moisture, then take an appropriate amount of aqueous liquid on the palm and spread it to massage the face or other areas of concern. As a result, the horny skin that does not need to be removed is removed.
After that, in order to completely remove the residue from the eraser scraps, rinse with water or lukewarm water and perform regular care with lotion.

<Action>
When the cleansing cosmetic composition of the present invention is applied to the skin, proteins and amino acids released on the skin react with the contained components, and the mixture of (A) and (B) precipitates in the form of eraser scraps. . This means
For example, when a water-soluble collagen (protein) aqueous solution is added to this cleaning cosmetic, a white precipitate is instantly generated, which can be confirmed.

Considering the principle that the cleaning cosmetic of the present invention removes dirt on the skin, among the components of the cleaning cosmetic of the present invention, the polarity of the carboxyl group-containing acidic polymer (A) is negative, Since the polarity of the nitrogen-containing heterocyclic compound-based cationic surfactant (B) is positive, it originally has contradictory properties, but apparently it should be a uniform metastable aqueous solution (aqueous solution or a state close to it). I can. However, when it comes into contact with proteins and amino acids (the free proteins and amino acids on the skin can be interpreted as the skin after turnover or as dirt such as sweat), the components in the aqueous solution react with the dirt. The aqueous liquid becomes unstable,
When a shearing force is applied by the massage, the entire dirt is deposited as an eraser scrap, and the dirt on the epidermis is entangled.

  The following examples further illustrate the invention. Hereinafter, “%” refers to weight%.

Example 1
(Carboxyl group-containing acidic polymer (A))
The following were prepared as the carboxyl group-containing acidic polymer (A).
(A1): Acrylic acid-alkyl methacrylate copolymer ("Carbopol 1382" manufactured by Noveon, 100% pure, pH of 0.5% aqueous solution is about 2)
(A2): Carboxyvinyl polymer ("Carbopol 940" manufactured by Noveon, 100% pure, pH of 0.5% aqueous solution is about 2)
(A3): Polyacrylic acid ("Junron PW-110" manufactured by Nippon Pure Chemicals Co., Ltd., pure content 10
The pH of aqueous solution with 0% and 0.5% concentration is 5-6)

(Nitrogen-containing heterocyclic compound-based cationic surfactant (B))
The following were prepared as the nitrogen-containing heterocyclic compound-based cationic surfactant (B).
(B1): Cetylpyridinium chloride (“Pionin B-651 made by Takemoto Yushi Co., Ltd.)
-P, pure 40% by weight, the rest is solvent)
(B2): Cetylpyridinium bromide (reagent grade 1, pure content 95% by weight)
(B3): Lauryl pyridinium chloride (“Pionin B-25 manufactured by Takemoto Yushi Co., Ltd.)
1, pure content 40% by weight, the rest is solvent)
(B4): N, N'-dialkylmorpholinium chloride
(B5): 2-alkyl-1-alkyl-1-hydroxyethylimidazolinium chloride

(Non-heterocyclic compound-based cationic surfactant (b))
The following were prepared as the non-heterocyclic compound-based cationic surfactant (b).
(b1): Stearyltrimethylammonium chloride ("Cootamine 86P" manufactured by Kao Corporation
Conch, 63% pure)
(b2): Behenyltrimethylammonium chloride (“Kachinal DC manufactured by Toho Chemical Co., Ltd.)
80 ”, 80% pure)
(b3): Cetyltrimethylammonium chloride (“Kachinal CTC manufactured by Toho Chemical Co., Ltd.)
-70ET ", 70% pure)
(b4): Stearyltrimethylammonium bromide (“Kachinal S, manufactured by Toho Chemical Co., Ltd.)
TB-70 ", 70% pure)
(b5): Dicocoyldimethylammonium chloride ("ARCARD 2c" manufactured by Lion Corporation
-75 ", 75% pure)
(b6): Distearyldimethylammonium chloride (“Cootamine D86 manufactured by Kao Corporation”
P ”, 75% pure)

(Preparation of cleaning cosmetics)
1. The carboxyl group-containing acidic polymer (A) is dissolved in purified water with stirring.
2. A solution prepared by stirring the aqueous solution for several minutes (3 minutes) with a homomixer is charged into a blending tank and slowly stirred.
3. Add glycerin (humectant) while continuing to stir.
4). Add purified water.
5. The nitrogen-containing heterocyclic compound-based cationic surfactant (B) is dissolved in heated purified water, and after dissolution is confirmed, it is charged into the compounding tank. (For comparison, when (b) is used instead of (B), (B
) And (b) were also tried. )
6). It was heated with stirring until the internal temperature reached 70 ° C., and stirring was continued for 30 minutes at this temperature.
Allow to cool.
7). The aqueous liquid that is the contents is taken out and filled into a container.

(Evaluation item)
Items 3 and 4 below are 40 women and 10 men from their late teens to early 70s.
A total of 50 people were panelists and were evaluated on the night when 10 to 15 hours had passed with the bare skin in the morning.
1. Solubility, viscosity The state of the system immediately after preparation of the aqueous liquid was evaluated as follows.
○: Slightly cloudy but clear. Moderate consistency.
□: Same as ○.
Δ: Cloudy and slightly gelled.
X: A liquid of shababa that is cloudy and has no viscosity like water.
XX: When stirring is continued, it becomes a white lump and is insoluble even when heated.

2. Low-temperature stability After preparing the aqueous liquid, the stability when stored for 7 days under a low-temperature condition of 5 ° C. was evaluated as follows.
○: Transparency remains large.
□: Precipitate does not occur but becomes pure white.
Δ: A white precipitate is formed.

3. Phenomenon of eraser scraps when applied to the skin The following evaluation was made as to whether or not the eraser scraps were scraped when an aqueous liquid was applied to the skin and lightly massaged (in between score 2 and score 1) If you feel like that, for example, an intermediate score of 1.5).
Score 2: Immediately eraser scraps are formed.
Score 1: It is in the form of eraser scrap, but incomplete.
Score 0: No eraser scrap.

4). Overall evaluation ◎: Excellent (best for commercialization)
○: Good (suitable for commercialization)
△: Yes (it is a temporary product, but it is difficult to say that it is satisfactory)
×: Impossible (no eraser scrap and no cleaning action)

(Prescription and results)
Formulations and results are shown in Tables 1-3. Table 1 is an example. Table 2 is a comparative example. Table 3 is also a comparative example. In Tables 1 to 3, the content of (B) and / or (b) is converted to a pure content. "-" In Tables 2-3 is not evaluated.

[Table 1]

Component and content (%) Solubility cold scrap-like phenomenon Overall rating
No. (A) (B), (b) Viscosity Stability Average score
1-1 A1 1.5 B1 2.00 ○ ○ 2.0 ◎
1-2 A1 1.5 B2 2.00 ○ ○ 1.9 ◎ 〜 ○
1-3 A1 1.5 B3 2.00 ○ ○ 2.0 ◎
1-4 A1 1.5 B4 2.00 ○ ○ 1.7 ○
1-5 A1 1.5 B5 2.00 □ 〜 ○ ○ 1.7 ○
2-1 A2 1.5 B1 2.00 ○ ○ 1.9 ◎ 〜 ○
2-2 A2 1.5 B2 2.00 ○ ○ 1.9 ◎ 〜 ○
2-3 A2 1.5 B3 2.00 ○ ○ 1.9 ◎ 〜 ○
2-4 A2 1.5 B4 2.00 ○ ○ 1.7 ○
2-5 A2 1.5 B5 2.00 □ 〜 ○ ○ 1.7 ○
3-1 A3 1.5 B1 2.00 ○ ○ 1.9 ◎ 〜 ○
3-2 A3 1.5 B2 2.00 ○ ○ 1.9 ◎ 〜 ○
3-3 A3 1.5 B3 2.00 ○ ○ 1.9 ◎ 〜 ○
3-4 A3 1.5 B4 2.00 ○ ○ 1.7 ○
3-5 A3 1.5 B5 2.00 □ 〜 ○ ○ 1.7 ○

[Table 2]

Component and content (%) Solubility cold scrap-like phenomenon Overall rating
No. (A) (B), (b) Stability Average score
4-1 A1 1.5 b1 2.00 △ ○ 1.4 △
4-2 A1 1.5 b2 2.00 △ □ 1.3 △
4-3 A1 1.5 b3 2.00 △ □ 1.3 △
4-4 A1 1.5 b4 2.00 △ □ 1.3 △
4-5 A1 1.5 b5 2.00 × − Almost 0 ×
4-6 A1 1.5 b6 2.00 × − Almost 0 ×
5-1 A2 1.5 b1 2.00 △ ○ 1.4 △
5-2 A2 1.5 b2 2.00 □ □ 1.4 △
5-3 A2 1.5 b3 2.00 △ ○ 1.4 △
5-4 A2 1.5 b4 2.00 △ □ 1.3 △
5-5 A2 1.5 b5 2.00 × − Almost 0 ×
5-6 A2 1.5 b6 2.00 × − Almost 0 ×
6-1 A3 1.5 b1 2.00 □ ○ 1.4 △
6-2 A3 1.5 b2 2.00 □ □ 1.4 △
6-3 A3 1.5 b3 2.00 □ ○ 1.4 △
6-4 A3 1.5 b4 2.00 □ □ 1.3 △
6-5 A3 1.5 b5 2.00 × − Almost 0 ×
6 -6 A3 1.5 b6 2.00 × − Almost 0 ×

[Table 3]

Component and content (%) Solubility cold scrap-like phenomenon Overall rating
No. (A) (B), (b) Stability Average score
7-1 A1 1.5 B1 1.60 △ □ 1.5 △
b1 0.40
7-2 A1 1.5 B2 1.70 △ □ 1.5 △
b3 0.30
7-3 A1 1.5 B3 1.30 △ □ 1.4 △
b4 0.70
8-1 A2 1.5 B1 1.50 △ □ 1.5 △
b1 0.50
8-2 A2 1.5 B2 1.60 △ □ to ○ 1.4 △
b3 0.40
8-3 A2 1.5 B3 1.80 △ □ 1.5 △
b4 0.20
9-1 A3 1.5 B1 1.00 □ □ 1.4 △
b4 1.00
9-2 A3 1.5 B2 1.90 □ □ to ○ 1.5 △
b3 0.10
9-3 A3 1.5 B3 1.80 □ □ to ○ 1.5 △
b1 0.20

(Example of application to skin)
Apply the cleansing cosmetics of No. 1-1 to 1-3, No. 2-1 to 2-3, and No. 3-1 to 3-3 in Table 1 to your face or hand and massage gently As soon as it was rubbed, it turned into a slightly brown residue that looked like a scrap of eraser, and the skin was cleaned. When I tried the same part again, this time, almost no such residue was generated. This means that the skin has already been cleaned in one operation or at most two operations.

(Horny turnover test)
Part of the skin was dyed in two places with dansyl chloride mixed cream, with one as a blank and the other as a verification part. The blank part is left as it is, and only the verification part is No. 1-1 in Table 1
1-3, No. 2-1 to 2-3, No. 3-1 to 3-3 cosmetics were applied and massaged, and then the two stained areas were observed with black light. The verification part that had been subjected to light emission was thinner than the blank part, and it was determined that the old keratin in the verification part was removed.

(analysis)
From the above Tables 1 to 3, the following can be understood.
1. In the cleaning cosmetic composition of the present invention using the nitrogen-containing heterocyclic compound-based cationic surfactant (B) as the other component of the carboxyl group-containing acidic polymer (A), as shown in Table 1, an aqueous liquid preparation is prepared. Excellent results are obtained in any of the solubility at the time, the storage stability at a low temperature after preparation of the aqueous liquid, and the phenomenon that the eraser becomes scrapy when applied to the skin.
2. In conventional cosmetics for washing using non-heterocyclic compound cationic surfactants (b) such as higher alkyltrimethylammonium salts and dihigher alkyldimethylammonium salts as the other component of the carboxyl group-containing acidic polymer (A) Then, as shown in Table 2, compared with the cosmetics for cleaning of the present invention, there is a tendency that the solubility at the time of preparing the aqueous liquid and the storage stability at a low temperature after the preparation of the aqueous liquid are insufficient, It is inferior to the cleaning cosmetic of the present invention in terms of the phenomenon that the eraser becomes scrapy when applied to the skin.
3. For cosmetics for cleaning using a non-heterocyclic compound-based cationic surfactant (b) together with a nitrogen-containing heterocyclic compound-based cationic surfactant (B) as the other component of the carboxyl group-containing acidic polymer (A) As shown in Table 3, the result is inferior to that obtained when the nitrogen-containing heterocyclic compound-based cationic surfactant (B) is used alone.

The cosmetic composition made of the above aqueous liquid is extremely useful as a cosmetic composition for cleaning because it can remove dirt and old keratin by applying light massage to the skin.

Claims (2)

A cosmetic composition for cleaning, which is made of an aqueous liquid, and when it is lightly massaged on the skin, it becomes an eraser scrap, and at the same time removes dirt and old keratin,
The aqueous liquid is at least one selected from the group consisting of a carboxyl group-containing acidic polymer (A) and a quaternary alkylpyridinium salt, a quaternary alkylimidazolinium salt, and a quaternary alkylmorpholinium salt. Containing a nitrogen-containing heterocyclic compound-based cationic surfactant (B) as an essential component,
Containing substantially no non-heterocyclic compound-based cationic surfactant; and
The content of the carboxyl group-containing acidic polymer (A) and the nitrogen-containing heterocyclic compound-based cationic surfactant (B) in the entire aqueous liquid is 0.2 to 5% by weight and 0.2 to 10% by weight, respectively. Cosmetics for cleaning. The carboxyl group-containing acidic polymer (A) is at least one (meth) acrylic acid selected from the group consisting of carboxyvinyl polymer, (meth) acrylic acid- (meth) acrylate copolymer, and poly (meth) acrylic acid. The cleaning cosmetic according to claim 1, which is a polymer.