JP5562589B2 - Cosmetic composition - Google Patents

Description

The present invention relates to a cosmetic composition having two functions of making the skin surface irregularities such as pores and fine wrinkles inconspicuous and having an ultraviolet ray preventing effect. More specifically, it has good stability on the skin, spreads well, has excellent makeup persistence, does not cause deterioration such as odor, discoloration, aggregation, separation, etc. even after long-term storage, and is safe. It relates to a high cosmetic composition.

Conventionally, in cosmetic compositions, attempts to make the unevenness of the skin surface such as pores and fine lines inconspicuous have been made mainly by using a semi-transparent spherical powder or the like from the rolling effect and optical properties (Patent Document 1). , 2). In addition, research related to ultraviolet rays and skin has been actively conducted, and in particular, a wavelength of 320 to 400 nm of a long wavelength part called ultraviolet UVA penetrates to the dermis, promotes skin aging, and forms wrinkles. It is publicly known that it is a factor to increase the length. The development of materials for the purpose of preventing ultraviolet rays UVA has been actively carried out, and many UVA scattering agents for inorganic pigments such as fine particle titanium oxide and fine particle zinc oxide and UVA absorbers obtained by organic synthesis have been developed and put on the market. . And many sunscreen preparations that combine and blend these materials are sold.

However, there have not been many proposals for a preparation having two functions that can make the unevenness of the skin surface such as pores and fine lines inconspicuous and has an ultraviolet ray preventing effect. In particular, there has been almost no proposal for imparting an ultraviolet UVA prevention effect.

JP-A-11-349442 JP 2002-241215 A

Inorganic pigment UVA scattering agents such as fine particle titanium oxide and fine particle zinc oxide generally have high particle hardness and strong cohesiveness, so that they tend to cause roughness and friction when applied to the skin. Since the refractive index of light is high, shadows of places such as pores and fine lines may be emphasized. UVA absorbers obtained by organic synthesis are highly reactive and may react with metal oxides, etc., leading to the formation of insoluble aggregates. In particular, special consideration is required. Concerning the cosmetic composition having two functions of making the skin surface irregularities such as pores and fine wrinkles inconspicuous and having an anti-ultraviolet effect, more specifically, it adheres to the skin and spreads well. There has been a demand for the development of a cosmetic composition that is excellent in makeup durability, has good stability that does not cause alteration such as odor, discoloration, aggregation, and separation even after long-term storage and has high safety.

The present invention relates to (a) a crosslinked organopolysiloxane polymer of 1.0 to 30.0% by mass.
(B) Butylmethoxydibenzoylmethane 0.1-3.0% by mass
(C) Tribehenine (d) One or more liquid oils selected from dimethicone, methyltrimethicone, caprylylmethicone, didecene, polydecene, isododecane, isohexadecane and neopentanoic acid ester 5.0 to 80.0%
And a cosmetic composition characterized by not containing ethylene oxide and / or propylene oxide addition polymer .

The (a) cross-linked organopolysiloxane polymer is partly or wholly selected from (d) dimethicone, methyltrimethicone, caprylylmethicone, didecene, polydecene, isododecane, isohexadecane and neopentanoic acid ester. It is preferable that the oil is uniformly mixed and gelled with one or more oils.

ADVANTAGE OF THE INVENTION According to this invention, while being able to make the unevenness | corrugation of skin surfaces, such as a pore and a fine wrinkle, inconspicuous, it has the ultraviolet protection effect, and can provide the cosmetics composition which has two functions. More specifically, it has good stability on the skin, spreads well, has excellent makeup persistence, does not cause deterioration such as odor, discoloration, aggregation, separation, etc. even after long-term storage, and is safe. A high cosmetic composition can be provided.

Hereinafter, the configuration of the present invention will be described in detail.
The (a) cross-linked organopolysiloxane polymer in the present invention is a fine solid elastic polymer in which a siloxane skeleton is cross-linked three-dimensionally. It has a thickening property. The crosslinked organopolysiloxane polymer has the effect of making the unevenness of the skin inconspicuous.

The (a) crosslinked organopolysiloxane polymer may have a spherical or irregular particle shape. Since the crosslinked organopolysiloxane polymer is commercially available as a powder, it may be used. Further, by using a kneader or the like in advance, (d) one or two or more liquid oils selected from dimethicone, methyltrimethicone, caprylylmethicone, didecene, polydecene, isododecane, isohexadecane and neopentanoic acid ester described later. It is preferable to use one that is uniformly mixed and gelled. Such a composition is preferably used because it easily adheres to the skin, spreads easily, and easily obtains a cosmetic composition having excellent makeup durability. Pre-mixed and gelled cross-linked organopolysiloxane polymers are “KSG-16, KSG-1610, KSG-42 (Shin-Etsu Chemical Co., Ltd.)”, “Trefill E-508, 9041 Silicone Elastomer Blend, EL-8040ID”. Since it is commercially available as “Silicon Organic Blend” (Toray Dow Corning), etc., they are also preferably used.

The amount of the crosslinked organopolysiloxane polymer is 1.0 to 30.0% by mass. If it is less than 1.0%, the effect of making the unevenness of the skin surface such as pores and fine wrinkles inconspicuous is lacking, and if it exceeds 30.0% by mass, it adheres to the skin, spreads well, and has excellent makeup sustainability. It becomes impossible. The lower limit of the amount is more preferably 2.0% by mass, and the upper limit of the amount is more preferably 25.0% by mass.

(B) Butylmethoxydibenzoylmethane is an effective component as an ultraviolet UVA absorber. Compared with other ultraviolet UVA absorbers, for example, oxybenzone-3, oxybenzone-4, etc., it is an ultraviolet UVA absorber that has a high ultraviolet prevention effect and has excellent performance. Examples of commercially available products include “Pulsol 1789 (DSM Nutrition)”, “ESCALOL 517 (ISP)”, “EUSOLEX 9020 (Merck)”. The blending amount of butylmethoxydibenzoylmethane is 0.1 to 3.0% by mass with respect to the total amount of the cosmetic. If it is less than 0.1% by mass, the effect of preventing ultraviolet rays is lacking, and if it exceeds 3.0% by mass, poor quality such as discoloration and aggregation tends to occur. The lower limit of the amount is more preferably 0.2% by mass, and the upper limit of the amount is more preferably 2.5% by mass.

In the present invention, (b) butylmethoxydibenzoylmethane is used as an ultraviolet UVA absorber. By adjusting the blending with other components, no aggregation or discoloration occurs, and a suitable cosmetic. It can be a composition. Further, sufficient ultraviolet UVA absorption ability can be obtained without blending fine particle titanium oxide, fine particle zinc oxide or the like. For this reason, since it is not necessary to mix fine particle titanium oxide, fine particle zinc oxide, etc., the shadows of places such as pores and fine lines are not emphasized. For this reason, ultraviolet UVA absorption ability can be given to cosmetics, without inhibiting the effect of making the unevenness | corrugation of skin surfaces, such as a pore and a fine wrinkle, inconspicuous. Thus, it is possible to provide a cosmetic material having both functions of having the ultraviolet UVA absorption ability and making the unevenness of the skin surface inconspicuous.

(C) Tribehenine in the present invention is a triester of behenic acid and glycerin. Since the above (c) tribehenine forms a soft gel, it has a good adhesion to the skin, spreads easily and has excellent makeup sustainability. Moreover, since the consistency adjustment of a composition can be made easy by adjusting the addition amount, it contributes also to favorable stability maintenance.

Although the compounding quantity of the said (c) tribehenine in the cosmetics of this invention is not specifically limited, It is preferable that it is 0.5-7.0 mass%. If it is less than 0.5% by mass, it may be separated, and if it exceeds 7.0% by mass, a sticky feeling may be produced and the feeling in use may be impaired. The lower limit is more preferably 1.0% by mass, and the upper limit is more preferably 5.0% by mass.

In the present invention, (d) one or more liquid oils selected from dimethicone, methyltrimethicone, caprylylmethicone, didecene, polydecene, isododecane, isohexadecane and neopentanoic acid ester are used as an emollient having a smooth feel. Used. Since all of them have good extensibility, it is easy to obtain a product that has good adhesion to the skin and spreads, and has excellent makeup sustainability. It is also compatible with the components (a) to (c) described above. The dimethicone preferably has a viscosity at 25 ° C. of 20 mPa · s or less. The neopentanoic acid ester is commercially available as dineopentanoic acid ethylpentanediol, dineopentanoic acid methylpentanediol, isostearyl neopentanoate, neopentanoic acid isodecyl, neopentanoic acid ethylhexyl, neopentanoic acid octyldodecyl, neopentanoic acid tridecyl, neopentanoic acid myristyl, You can select it in a timely manner.

Although the compounding quantity of the said component (d) is not specifically limited, It is preferable that it is 5.0-80.0 mass%. If it is less than 5.0% by mass, the feeling of use such as elongation may be deteriorated, and if it exceeds 80.0% by mass, it may be separated. The lower limit is more preferably 7.0% by mass, and the upper limit is more preferably 75.0% by mass.

The cosmetic composition of the present invention preferably contains no ethylene oxide and / or propylene oxide addition polymer. The ethylene oxide and / or propylene oxide addition polymer is a general-purpose material widely used in the cosmetics field as a resin, a surfactant, etc., but in the present invention, the quality is bad such as odor or discoloration. It is preferable not to use these from the point which becomes easy to produce.

The ethylene oxide and / or propylene oxide addition polymer is a polymer produced by an addition reaction of ethylene oxide and / or propylene oxide, and more specifically, alkylphenol ethylene oxide adduct, higher alcohol ethylene oxide adduct, Oxyethylene fatty acid ester, higher alkylamine ethylene oxide adduct, fatty acid amide ethylene oxide adduct, polypropylene glycol ethylene oxide adduct, polyoxyethylene polyoxypropylene alkyl ether, copolymer of dimethicone and polyoxyethylene / propylene, etc. .

The present invention can be applied not only as an oily gel composition but also as an emulsified composition by adding an appropriate amount of an emulsifier such as sorbitan isostearate or diglyceryl isostearate. As the emulsifier, those containing ethylene oxide and / or propylene oxide addition polymer are widely used, but it is not preferable because the quality of odor and discoloration is likely to occur.

When making the cosmetic composition of this invention into an emulsion composition, it is preferable to contain 1.0-60.0 mass% water. If it is less than 1.0% by mass, it may cause a problem that it is difficult to obtain a feeling of refreshing, which is a characteristic of the emulsion composition, and if it exceeds 60.0% by mass, it may be separated. The lower limit is more preferably 5.0% by mass, and the upper limit is more preferably 50.0% by mass.

The cosmetic composition of the present invention includes generally used medicinal ingredients, flavoring agents, refreshing agents, UV absorbers, UV scattering agents, suspending agents, stabilizers, wetting agents, antioxidants, pH adjusting agents, A viscosity modifier, a coloring agent, a preservative, etc. can be mix | blended. However, components that are likely to elute metal ions should be excluded because they react with butylmethoxydibenzoylmethane, resulting in discoloration and formation of aggregates. Examples of components that are likely to elute metal ions include metal oxides such as titanium oxide, zinc oxide, and iron oxide, and metal soaps that are salts of fatty acids and non-alkali metals.

The cosmetic composition of the present invention can be suitably used as a basic cosmetic such as an eye cream; a base makeup cosmetic such as a makeup base, concealer or foundation; a sunscreen cosmetic.

EXAMPLES The present invention will be further described below with reference to examples, but the present invention is not limited to these examples. In addition, all compounding quantities represent the mass%.

Examples 1-8 and Comparative Examples 1-4: Pore, fine wrinkle concealment (partial makeup base)
The pores and fine wrinkles (partial makeup base) having the composition shown in Table 1 were prepared by the following production method. Regarding the pores and fine wrinkle concealing material (partial makeup base) obtained, (1) pores, fine wrinkle concealing effect, (2) feeling of use and makeup persistence, (3) stability test, and (4) UV protection effect The results are shown in Table 1.

[Production method]
(1) Components 1 to 18 were uniformly mixed, dissolved and dispersed at about 85 ° C., and then cooled to room temperature to obtain pores and fine wrinkles (partial makeup base).

[Hole and fine line concealment effect: test method / evaluation method]
Ten panelists specializing in cosmetic evaluation applied each sample to the uneven portions of the skin surface such as pores and fine lines, and visually observed with a hand mirror, and evaluated the pores and fine lines concealment effect in three stages for each sample according to the following criteria. Furthermore, it determined from the average point.

Evaluation criteria 3 points: Pore, fine wrinkle concealing effect was recognized 2 points: Pore, fine wrinkle concealing effect was recognized 1 point: Poor, fine wrinkle concealing effect was hardly recognized ○: 2.5- 3.0
Δ: Less than 2.0 to 2.5 ×: Less than 2.0

[Usage feeling and makeup sustainability: test method / evaluation method]
10 panelists specializing in cosmetics evaluation evaluated the feeling of use (applying to the skin, spreading) and makeup sustainability when applying each sample to the uneven surface of the skin, such as pores and fine lines, according to the following criteria. Furthermore, it judged from the average score.

Evaluation criteria 5 points: Good 4 points: Slightly good 3 points: Normal 2 points: Slightly bad 1 point: Defect criteria C: Average point 4.0 or higher Δ: Average point 3.0 or higher and lower than 4.0 ×: Average point Less than 3.0

[Stability test: test method / evaluation method]
Each sample was filled in a laminated polyethylene transparent tube, allowed to stand at room temperature for 6 months, observed for state change, and evaluated according to the following criteria.
○: Deterioration such as odor change, discoloration, aggregation, separation, etc. was not observed △: Deterioration such as slight odor change, discoloration, aggregation, separation, etc. was observed ×: Significant odor change, discoloration, aggregation, separation, etc. Alteration was observed

[Ultraviolet ray prevention effect: test method / evaluation method]
Each sample was applied to the back of five volunteers, and after 4 hours of sunshine under clear weather, wiped off, and after 4 hours, the state change was observed in comparison with the unapplied part, and the following criteria were used for the three-stage evaluation. Furthermore, it judged from the average score.

Evaluation criteria 3 points: UV protection effect was clearly recognized 2 points: Slight UV protection effect was observed 1 point: UV protection effect was not recognized

Judgment criteria ○: 2.5 to 3.0
Δ: Less than 1.5 to 2.5 ×: Less than 1.5

As is clear from the results in Table 1, Examples 1 to 8 according to the present invention can make the unevenness of the skin surface such as pores and fine wrinkles inconspicuous and have an ultraviolet ray preventing effect as compared with the comparative example. It was a pore and wrinkle concealing agent (partial makeup base) that had two functions. More specifically, it has good stability on the skin, spreads well, has excellent makeup persistence, does not cause deterioration such as odor, discoloration, aggregation, separation, etc. even after long-term storage, and is safe. High pores, wrinkle concealment (partial makeup base). On the other hand, in Comparative Examples 1-4 , there was no ultraviolet-ray prevention effect or it was unsatisfactory about a pore, a fine wrinkle concealment effect, a feeling of use, makeup sustainability, and a stability test.

Example 9 Eye Cream (Production Method)
(1) Components 1 to 12 shown in Table 2 are uniformly mixed and dispersed at about 80 ° C. (2) Components 13 to 20 are uniformly mixed and dispersed at about 80 ° C. (2) was added to (1) with stirring and emulsified, and then cooled to about 32 ° C. to obtain an eye cream.

The eye cream of Example 9 was an eye cream that had two functions of making the skin surface irregularities such as pores and fine wrinkles inconspicuous and having an ultraviolet ray preventing effect.

Example 10 Sunscreen Latex (Production Method)
(1) Components 1 to 12 shown in Table 3 are uniformly mixed and dispersed at about 80 ° C. (2) Components 13 to 15 are uniformly mixed and dispersed at about 80 ° C. (2) was added to (1) with stirring and emulsified, then cooled to about 45 ° C., component 16 was added with stirring, and further cooled to 32 ° C. to obtain a sunscreen emulsion.

The 10-day sunscreen emulsion of the example was an eye cream that had two functions of making the skin surface irregularities such as pores and fine wrinkles inconspicuous and having the effect of preventing ultraviolet rays.

The cosmetic composition of the present invention can be suitably used for basic cosmetics such as eye creams; base makeup cosmetics such as makeup foundations, concealers and foundations; sunscreen cosmetics and the like.

Claims (2)

(A) Crosslinked organopolysiloxane polymer 1.0 to 30.0% by mass
(B) Butylmethoxydibenzoylmethane 0.1-3.0% by mass
(C) Tribehenine (d) One or more liquid oils selected from dimethicone, methyltrimethicone, caprylylmethicone, didecene, polydecene, isododecane, isohexadecane and neopentanoic acid ester 5.0 to 80.0%
A cosmetic composition comprising: ethylene oxide and / or propylene oxide addition polymer . (A) The cross-linked organopolysiloxane polymer is partly or wholly selected from (d) dimethicone, methyltrimethicone, caprylylmethicone, didecene, polydecene, isododecane, isohexadecane, and neopentanoic acid ester. The cosmetic composition according to claim 1, wherein the cosmetic composition is uniformly mixed and gelled with one or more of the above.