JP2002284672A - Cleansing cosmetics - Google Patents

Abstract

(57) [Problem] To provide a cleansing cosmetic excellent in cleansing effect and use feeling (smoothness during use, moisturizing feeling after use, non-stickiness after use). SOLUTION: (A) 20 to 70% by mass of a water-soluble polyhydric alcohol, (B) 0.1 to 10% by mass of a nonionic surfactant having an HLB of 7 to less than 12, and (C) a nonionic surfactant having an HLB of 12 or more. 0.1 to 10% by mass, (D) 0.01 to 3% by mass of acrylic acid / alkyl methacrylate copolymer
A cleansing cosmetic, characterized by containing as an essential component.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a cleansing cosmetic, and more particularly to a cleansing cosmetic having an excellent cleansing effect and a good feel during and after use.

[0002]

2. Description of the Related Art Conventionally, cleansing cosmetics for removing sebum stains and makeup cosmetics on the skin include oil-based cleansing cosmetics mainly containing liquid oil and the like.
In addition, emulsified oily components with surfactants, emulsifying type cleansing cosmetics in the form of creams or emulsions, and aqueous types in which surfactants are dissolved in aqueous components or gels solidified with water-soluble polymers Cleansing cosmetics and the like have been used.

[0003]

However, oil-based cleansing cosmetics and emulsified-type cleansing cosmetics contain a large amount of oily components, so that they are well compatible with oil stains and have excellent cleansing effects, but after wiping or rinsing. Later, the oily component may remain on the skin and give a sticky feeling, making it impossible to obtain a refreshing feeling in use.

[0004] On the other hand, aqueous cleansing cosmetics have a low content of oily components, so that they have a fresh feeling during use and have a refreshing feeling of use, but they are poorly compatible with oil stains and may not have a sufficient cleansing effect. there were.
Therefore, a cleansing component such as an anionic surfactant or an amphoteric surfactant having a detergency has been blended to enhance the cleansing effect. However, in this case, although the cleansing effect is improved, the moist feeling of the skin after rinsing is insufficient, and there is a case where the skin feels tight. Therefore, development of a cleansing cosmetic which has an excellent cleansing effect, has no sticky feeling even after use, and has an excellent moisturizing feeling has been desired.

[0005]

[Means for Solving the Problems] In view of such circumstances,
The present inventor has conducted intensive studies to overcome the above-mentioned drawbacks. By containing a specific amount of the polymer as an essential component, it has been found that the present invention has an excellent cleansing effect, a good feel during use, no stickiness after use, and an excellent moisturizing feeling. .

That is, the present invention relates to (A) 20 to 70% by mass of a water-soluble polyhydric alcohol, (B) 0.1 to 10% by mass of a nonionic surfactant having an HLB of 7 to less than 12, and (C)
A cleansing cosmetic comprising 0.1 to 10% by mass of a nonionic surfactant having an HLB of 12 or more and (D) 0.01 to 3% by mass of an acrylic acid / alkyl methacrylate copolymer as essential components. is there. Also preferably, a cleansing cosmetic in which the water-soluble polyhydric alcohol of the component (A) is glycerin. More preferred is a cleansing cosmetic containing a lower alcohol as the component (E).

Hereinafter, the present invention will be described in detail. The water-soluble polyhydric alcohol of the component (A) used in the present invention is contained for the purpose of imparting a thick and smooth feel when used as a cleansing cosmetic and a moist feeling after use. .

The water-soluble polyhydric alcohol of the component (A) used in the present invention is not particularly limited, but specific examples include a water-soluble polyhydric alcohol having two or more hydroxyl groups in a molecule. Examples thereof include glycols such as propylene glycol, 1,3-butylene glycol, dipropylene glycol, and ethylene glycol; glycerols such as glycerin and polyglycerin; sorbitol; and maltitol. One or more of these can be appropriately selected and used as necessary. Among these, glycerin is preferred in order to obtain a thick and smooth feel during use and a moist feeling after use.

In the present invention, the water-soluble polyhydric alcohol of the component (A) may be 20 to 70% by mass (hereinafter simply referred to as "%") in the whole composition, and more preferably 30 to 60% by mass. It is more preferable to obtain a thick and smooth feel during use and a moist feeling after use. 2
If it is less than 0%, a thick and smooth feeling upon use cannot be obtained at the time of use, and if it is more than 70%, a sticky feeling is produced and a cleansing effect is deteriorated.

HLB7 of component (B) used in the present invention
The nonionic surfactant of less than 12 is contained for the purpose of imparting an excellent cleansing effect. H
A nonionic surfactant having an LB of 7 to less than 12 has a high cleansing effect on oil stains.
The cleansing effect can be synergistically improved by being combined with the nonionic surfactant described above.

HLB7 of component (B) used in the present invention
The nonionic surfactant having a number of less than or equal to 12 is not particularly limited, but if specifically exemplified, glycerin fatty acid ester and its alkylene glycol adduct, polyglycerin fatty acid ester and its alkylene glycol adduct, propylene glycol fatty acid ester And its alkylene glycol adduct, sorbitan fatty acid ester and its alkylene glycol adduct, sorbitol fatty acid ester and its alkylene glycol adduct, polyalkylene glycol fatty acid ester, sucrose fatty acid ester, polyoxyalkylene alkyl ether, glycerin alkyl ether, polyoxy Ethylene alkyl phenyl ether, polyoxyethylene hydrogenated castor oil, alkylene glycol adduct of lanolin, higher fatty acid ethanol De, polyoxyalkylene alkyl co-modified silicone, polyether-modified silicone, and the like. These can be used alone or in combination of two or more as needed. Among these, polyoxyethylene hydrogenated castor oil, polyoxyethylene sorbite fatty acid ester, and polyoxyethylene glyceryl triisostearate are preferable as the nonionic surfactant having an HLB of 7 or more and less than 12 in order to obtain an excellent cleansing effect.

In the present invention, the nonionic surfactant having an HLB of 7 or more and less than 12 of component (B) is contained in an amount of 0.1 to 0.1 in the total composition.
10 to 10%, and 0.5 to 5%,
It is more preferable to obtain an excellent cleansing effect.
If less than 0.1%, a good cleansing effect cannot be obtained,
On the other hand, if the content exceeds 10%, the washing effect is so strong that the feeling of moisturizing after use may not be sufficient, which is not preferable.

HLB1 of component (C) used in the present invention
Two or more nonionic surfactants are included for the purpose of imparting an excellent cleansing effect and reducing the sticky feeling after use. Nonionic surfactants having an HLB of 12 or more have a high cleansing effect on aqueous components other than oil stains. In the present invention, the cleansing effect is synergistically improved by being combined with a nonionic surfactant having an HLB of 7 to less than 12 in combination. be able to.

HLB1 of component (C) used in the present invention
The two or more nonionic surfactants are not particularly limited, but if specifically exemplified, glycerin fatty acid ester and its alkylene glycol adduct, polyglycerin fatty acid ester and its alkylene glycol adduct, propylene glycol fatty acid ester and The alkylene glycol adduct, the sorbitan fatty acid ester and the alkylene glycol adduct, the sorbitol fatty acid ester and the alkylene glycol adduct,
Polyalkylene glycol fatty acid ester, sucrose fatty acid ester, polyoxyalkylene alkyl ether, glycerin alkyl ether, polyoxyethylene alkyl phenyl ether, polyoxyethylene hydrogenated castor oil, alkylene glycol adduct of lanolin, higher fatty acid ethanolamide, polyoxyalkylene alkyl Co-modified silicone, polyether-modified silicone and the like can be mentioned. These can be used alone or in combination of two or more as needed. Among them, as a nonionic surfactant having an HLB of 12 or more, a higher fatty acid ethanolamide is more preferable because of obtaining an excellent cleansing effect and a non-sticky feel after use. Examples of the higher fatty acid include lauric acid, myristic acid, and coconut oil fatty acid, and any of monoethanolamide and diethanolamide can be used. Also, higher fatty acid ethanolamide to which polyoxyethylene is added may be used.

In the present invention, HLB12 of the component (C) is used.
The above nonionic surfactant is contained in an amount of 0.1 to 10 in the total composition.
%, And more preferably 0.5 to 5%, in order to obtain an excellent cleansing effect. 0.1%
If less than 1, a good cleansing effect cannot be obtained.
If the content exceeds 0%, the washing effect is too strong and the moisturizing feeling after use may not be sufficient, which is not preferable.

In the present invention, the nonionic surfactant having a HLB of 7 to less than 12 of the component (B) and the HL of the component (C) are used.
The blending ratio of the nonionic surfactant of B12 or more is HL
B7 or more and less than 12 nonionic surfactant: HLB12
When the above nonionic surfactant is in the range of 20: 1 to 1:20, it is preferable to obtain a more excellent cleansing effect, and more preferably, it is in the range of 5: 1 to 1: 5.

The acrylic acid / alkyl methacrylate copolymer of the component (D) used in the present invention is contained for the purpose of providing a thickening agent for cleansing cosmetics and for imparting a smooth feel when used.

The acrylic acid / alkyl methacrylate copolymer of the component (D) used in the present invention is not particularly limited, but specific examples include acrylic acid and alkyl (C10-C30) acrylate. And more specifically exemplified by Carbopol 1342, Pemulen TR-1, Pemulen TR-
2 (both manufactured by BF Goodrich) can be used. These can be used alone or in combination of two or more as necessary.

The component (D) of the acrylic acid / alkyl methacrylate copolymer used in the present invention contains 0.0% of the total composition.
The content is preferably 1 to 3%, and more preferably 0.05 to 1.5%, in order to obtain a smooth feel during use. If the content is less than 0.01%, a smooth feel during use cannot be obtained, and if the content exceeds 3%, the viscosity is too high, causing poor elongation or sticky feeling when applied to the skin. And a good feeling of use cannot be obtained.

In the present invention, a lower alcohol as the component (E) can be contained for the purpose of further improving the usability. The lower alcohol suppresses the sticky feeling after use, gives a refreshing feeling, and further improves the feeling of use as a cleansing cosmetic.

The lower alcohol of the component (E) used in the present invention includes ethyl alcohol and isopropyl alcohol. These are one kind as needed,
Alternatively, two or more kinds can be used in combination.

In the present invention, the content of the lower alcohol of the component (E) is not particularly limited. However, in order to further improve the refreshing feeling after use, 0.1 to 30% of the total composition is used.
Is more preferable, and more preferably 3 to 15%.

The cleansing cosmetic of the present invention may be in the form of a liquid, an emulsion, a gel, or a cream, and can be applied to massages, makeup removers, and the like. Further, as a method of use, any of a wiping use and a rinsing use is suitable.

In the cleansing cosmetic of the present invention,
In addition to the above essential components, components generally blended in cosmetics can be blended within a range that does not impair the effects of the present invention. For example, HLB ranges other than those described above for nonionic surfactants, anionic surfactants, cationic surfactants, amphoteric surfactants, carboxyvinyl polymers, methylcellulose, polyoxyethylene polyoxypropylene copolymers and the like Water-soluble polymer compounds, waxes, oils, silicones, fatty acids, cosmetic ingredients, inorganic powders, organic powders, alkalis, fragrances, pigments, antioxidants, bactericides, preservatives, etc. do not impair the effects of the present invention. It can be blended in the range.

[0025]

The present invention will be further described with reference to the following examples. These do not limit the present invention at all.

Examples 1 to 8 and Comparative Examples 1 to 8: Cleansing agents Cleansing agents having the compositions shown in Tables 1 and 2 below were prepared. (1) Cleansing effect, (2) feeling of use (smoothness during use), (3) feeling of use (moisturizing after use), (4) feeling of use (no stickiness after use) ) Was evaluated by the following methods, and the results are collectively shown in Tables 1 and 2.

[0027]

[Table 1]

[0028]

[Table 2]

(Production method) A: Components (1) to (3) and (9) are uniformly mixed. B: Components (4) to (8) were uniformly mixed and added to A and mixed to obtain a cleansing agent.

(1) to (4) Sensory evaluation test: Twenty female evaluation panels pick up an appropriate amount of the above-mentioned cleansing material, apply it to the face to which the foundation has been applied, and wipe it off with cotton. (1) Cleansing Effect, (2) feeling of use (smoothness during use), (3)
Each evaluation item of feeling of use (moisturizing feeling after use) and (4) feeling of use (non-stickiness after use) was evaluated on a seven-point scale using the following (a) absolute evaluation criteria. Thereafter, the average value of the scores of each sample was determined using the (b) four-step criterion.

Evaluation items <1> Cleansing effect <2> Feeling of use (smoothness during use) <3> Feeling of use (moisturizing after use) <4> Feeling of use (non-stickiness after use) (a) Absolute Evaluation Criteria (Score) (Evaluation) 6: Very Good 5: Good 4: Slightly Good 3: Normal 2: Slightly Bad 1: Bad 0: Very Bad (B) 4-Level Judgment Criteria (Average Score) ( Judgment) More than 5.0: ◎ More than 3.0 and up to 5.0: ○ More than 1.0 and up to 3.0: △ 1.0 or less: ×

As is clear from the results shown in Tables 1 and 2, the cleansing materials of Examples 1 to 8 of the present invention have a cleansing effect, smoothness during use, and moisturizing after use as compared with Comparative Examples 1 to 8. It was a cleansing agent which was excellent in feeling and non-stickiness after use.

[0033] Note 1: Pemulen TR-1 (manufactured by BF Goodrich)

(Production method) A: Components (1) to (5) are uniformly mixed. B: Components (6) to (13) were uniformly mixed and added to and mixed with A to obtain a cleansing cosmetic.

The cleansing cosmetic of Example 9 was excellent in cleansing effect, smoothness during use, moisturizing feeling after use, and non-stickiness after use.

Example 10: (Cleansing cosmetic containing scrubbing agent) (Ingredient) (%) (1) Dipropylene glycol 10.0 (2) Glycerin 30.0 (3) Alkyl acrylic acid / methacrylic acid 0.6 L Copolymer Note 1 (4) Sodium hydroxide 0.12 (5) Remaining purified water (6) Polyoxyethylene hydrogenated castor oil 1.5 (30EO) (HLB = 11) (7) Polyoxyethylene Triisostearate 0.5 glyceryl phosphate (30EO) (HLB = 10) (8) Myristic acid diethanolamide 2.0 (HLB = 12) (9) Polyethylene powder 1.0 (10) Ethanol 8.0 (11) Appropriate amount of preservative (12) Appropriate amount of fragrance Note 1: Pemulen TR-2 (manufactured by BF Goodrich)

(Production method) A: Components (1) to (5) are uniformly mixed. B: Components (6) to (12) were uniformly mixed and added to and mixed with A to obtain a scrubbing agent-containing cleansing cosmetic.

The cleansing cosmetic containing scrubbing agent of Example 10 was a cleansing cosmetic excellent in cleansing effect, smoothness in use, moisturizing feeling after use, and non-stickiness after use.

[0039]

As described above, the cleansing cosmetic composition of the present invention has excellent cleansing effect and excellent feeling of use (smoothness during use, moisturizing feeling after use, and non-stickiness after use). Obtained and have excellent quality.

Claims (3)

[Claims] (1) The following components (A) to (D): (A) 20 to 70% by mass of a water-soluble polyhydric alcohol; (B) 0.1 to 10% by mass of a nonionic surfactant having an HLB of 7 to less than 12. C) Nonionic surfactant having an HLB of 12 or more 0.1 to 0.1
10% by mass (D) Acrylic acid / alkyl methacrylate copolymer
A cleansing cosmetic comprising 0.1 to 3% by mass as an essential component. 2. The cleansing cosmetic according to claim 1, wherein the component (A) is glycerin. 3. The cleansing cosmetic according to claim 1, further comprising a lower alcohol as the component (E).