JP2009155211A - Cosmetic for correcting pores of skin - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cosmetic for correcting pores of skin, having an effect of correcting the dinginess of the peripheral edge portions of the pores. <P>SOLUTION: This cosmetic for correcting the pores is characterized by containing water in an amount of 1 to 10 mass%, more preferably 3 to 8 mass%, in a gel structure made from cross-linking type dimethicone and cyclomethicone. The gel structure made from the cross-linking type dimethicone and the cyclomethicone preferably comprises 5 to 20 mass% of the cross-linking type dimethicone and 30 to 60 mass% of the cyclomethicone. The titanium dioxide-coated spherical powder preferably contains titanium dioxide-coated silica, and the sericite whose surface may be coated with other metal oxide is preferably titanium sericite and/or silica coated with silica-red iron oxide, and preferably sericite bound to titanium dioxide with polymethyl methacrylate as a binder. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a cosmetic, and more particularly to a cosmetic suitable for pore correction.

  The shape of pores changes with age, and it is said that pores become more noticeable as they age. This is because the pores themselves expand and darkening occurs at the edges of the pores, making it easier to distinguish them from other skin sites in three dimensions and colors. One of the facts is that the number of people with conspicuous pores is increasing rapidly with the aging of the lifespan in recent years, and the conspicuousness of such pores reduces the effectiveness of makeup cosmetics. It is a fact. For this reason, attempts have been made to correct pores and maintain the effect of makeup cosmetics. Such attempts include, for example, a method in which a spherical powder such as silica is contained in a hydrous oil gel dosage form to fill pores and make pores inconspicuous (see, for example, Patent Document 1 and Patent Document 2) , A method using a partially crosslinked fluoroalkyl group-containing organopolysiloxane and a non-crosslinked fluoroalkyl group-containing organopolysiloxane (see, for example, Patent Document 3), a method of filling polymethyl methacrylate powder (for example, a patent) Reference 4) exists. By these methods, makeup unevenness due to the makeup cosmetics falling into the pores was suppressed and the effect of making the pores inconspicuous was exhibited, but in such a preparation, the color effect due to darkening around the pores was corrected. That remained a challenge. This is because when using concealing powder such as titanium dioxide for filling pores, filling uniformity may be impaired, or the cosmetic effect itself may be reduced due to the appearance of unnaturalness due to the high concealing effect. As a material, there was no correction method except to use a defocus effect by a spherical diffusion powder such as silica or polymethyl methacrylate. In other words, it can be said that the most important issue in pore correction cosmetics is correction of darkening of the pore edge.

  On the other hand, titanium sericite is a plate-like powder that embodies natural covering power. On the skin, titanium dioxide that expresses covering power is thickened by placing it on the surface in a single phase. It is known to realize natural covering power. (For example, see Patent Document 5) However, it is not considered that the plate-like powder can fill the pores, and there is no example in which titanium sericite is contained in the cosmetic for correcting pores. In addition, 1) In the gel structure formed by cross-linked dimethicone and cyclomethicone, 2) 1 to 10% by mass of water, 3) 15 to 40% by mass of silica, and 4) spherical powder 1 to 10 coated with titanium dioxide No cosmetics containing 5% by mass and 5) 0.5 to 5% by mass of sericite, the surface of which may be coated with other metal oxides, are not known. It has not been known at all that it is excellent in the correction effect, in particular, the darkening correction effect at the pore edge.

JP-A-11-349442 JP 2005-213145 A JP 2005-336161 A JP 2005-41795 A JP 2000-229808 A

  The present invention has been made under such circumstances, and an object of the present invention is to provide a cosmetic that also has the effect of correcting the darkening of the pore edge in the pore correction cosmetic.

In view of such a situation, as a result of intensive research efforts, the present inventors have sought for cosmetics that also have the effect of correcting the darkening of the pore edges in the pore correction cosmetics. In the gel structure formed by cross-linked dimethicone and cyclomethicone, 2) 1 to 10% by mass of water, 3) 15 to 40% by mass of silica, 4) 1 to 10% by mass of titanium dioxide-coated spherical powder, 5 ) It has been found that such properties exist in cosmetics containing 0.5 to 5% by mass of sericite, the surface of which may be coated with other metal oxides, and the present invention has been completed. That is, the present invention is as follows.
<1> 1) In a gel structure formed by cross-linked dimethicone and cyclomethicone, 2) 1 to 10% by mass of water, 3) 15 to 40% by mass of silica, and 4) spherical powder 1 to 10 coated with titanium dioxide A cosmetic comprising 5% by mass and 5) 0.5 to 5% by mass of sericite, the surface of which may be coated with another metal oxide.
<2> The gel structure formed by the crosslinked dimethicone and cyclomethicone contains 5 to 20% by mass of crosslinked dimethicone and 30 to 60% by mass of cyclomethicone, according to <1>. Cosmetics.
<3> The cosmetic according to <1> or <2>, wherein the titanium dioxide-coated spherical powder contains titanium dioxide-coated silica.
<4> The sericite whose surface may be coated with the other metal oxide is a sericite in which silica / bengala-coated titanium sericite and / or silica and titanium dioxide are combined with polymethyl methacrylate as a binder. The cosmetic according to any one of <1> to <3>, which is characterized in that it exists.
<5> The cosmetic according to any one of <1> to <4>, wherein the cosmetic is for pore correction.
<6> The cosmetic according to any one of <1> to <5>, which is a base cosmetic.

  ADVANTAGE OF THE INVENTION According to this invention, in the pore correction | amendment cosmetics, the cosmetics which have the correction effect of the darkening of a pore edge part can be provided.

(1) Water which is an essential component of the cosmetic composition of the present invention The cosmetic composition of the present invention contains 1 to 10% by mass of water, more preferably 3 to 8% by mass in the gel structure formed by the crosslinked dimethicone and cyclomethicone. It is characterized by containing. Such water-containing form is preferably in a solubilized state, for example, preferably 1-5% by mass of polyether-modified silicone is used for solubilization. By taking such a solubilized form, the filling efficiency into the pores of the cosmetic composition can be enhanced. If the water content is too low, the familiarity between the cosmetic composition and the pores will be impaired, and the cosmetic composition may not be filled uniformly, and if it is too much, water may be released without being solubilized. Exist.

(2) Silica which is an essential component of the cosmetic composition of the present invention The cosmetic composition of the present invention has a silica structure of 15 to 40% by mass, more preferably 20 to 30% by mass in the gel structure formed by the crosslinked dimethicone and cyclomethicone. It is characterized by containing. Silica is filled in the pores and has a function of making the inside of the pores difficult to show due to a defocus effect and reducing the presence of the presence. If the amount of such components is too small, the pores may not be sufficiently filled, and there may be cases where a three-dimensional correction action and an optically effective correction action (blurring effect) cannot be obtained sufficiently. Moreover, when there are too many such components, the visual correction effect of the darkening by a postscript component may be inhibited. Such silica can be used in a spherical shape or in the form of a fume, but a spherical one is preferable because it has excellent pore filling properties. Silica can be used as it is, and the surface is preferably subjected to surface treatment such as hydrogen methylpolysiloxane baking treatment, dimethylpolysiloxane baking treatment, N-acylglutamate coating treatment or silylation treatment. The amount of the treating agent in such treatment is preferably 1 to 10% by mass with respect to the total amount of the powder.

(3) Titanium dioxide-coated spherical powder which is an essential component of the cosmetic of the present invention The cosmetic of the present invention has 1 to 10 mass of titanium dioxide-coated spherical powder in the gel structure formed by cross-linked dimethicone and cyclomethicone. %, More preferably 2 to 6% by mass. Such components have the effect of increasing the specular reflectivity of the mixture when mixed with silica in an appropriate amount. In addition, the diffuse permeability itself is not impaired. By such an effect, the defocus effect can be enhanced. An appropriate amount that exhibits such an effect is preferably 5 to 20% by mass, more preferably 7 to 10% by mass, based on silica. If there are too many such components, the specular reflectivity will be too high and the presence of pores may be conspicuous. On the other hand, if the amount is too small, the specular reflectivity effect will be diminished and the color correction effect may be impaired. Such titanium dioxide-coated spherical powder can be preferably exemplified by titanium dioxide-coated silica, titanium dioxide-coated alumina, etc., and can be produced by depositing titania sol on spherical silica or spherical alumina and firing it. I can do it. Such titanium dioxide-coated spherical powders already exist on the market, and such commercial products can be purchased and used. Preferable commercial products include, for example, “Multiple Beads”, “Multiple Beads II” (both of which are titanium dioxide-coated silica) sold by Catalytic Chemical Industry Co., Ltd.

(4) Sericite that may be coated with another metal oxide that is an essential component of the cosmetic composition of the present invention. The cosmetic composition of the present invention has a gel structure formed by cross-linked dimethicone and cyclomethicone. It contains 0.5 to 5% by mass of sericite, the surface of which may be coated with a metal oxide. As the sericite whose surface may be coated with such other metal oxides, for example, silica-Bengara-coated titanium sericite and / or silica and titanium dioxide-coated sericite are preferable. It is also possible to use polymethyl methacrylate as a binder. Preferable examples include silica / bengala-coated titanium sericite and / or sericite obtained by binding silica and titanium dioxide with polymethyl methacrylate as a binder. Such a powder can be obtained by coating titanium sericite with silicic anhydride and iron oxide with a ball mill or the like and firing at 200 to 1000 ° C. If methyl or the like is used as a binder, it can be prepared by kneading methyl methacrylate and a constituent powder in the presence of a catalyst, spraying it, heating and polymerizing it. Such powders already exist on the market, and such commercially available products can also be used. Examples of such commercially available products include “Derma Real Leaf N” (Silica / Bengara Coated Titanium Sericite; Catalytic Chemical Industry Co., Ltd.), “TPM Powder 2003” (silica and titanium dioxide with polymethyl methacrylate as binder. Sericite combined; Daito Kasei Kogyo Co., Ltd.). Such a component is localized at the edge of the pore having a high affinity with the plate-like powder, and enhances the specular reflectivity of the part, thereby correcting the darkening at the edge. In order to localize to the pore edge, the amount ratio of the content does not hinder the pore correction effect of the spherical powder. When the content is too large, there are cases where the pore correction effect due to the spherical powder is hindered, and when the content is too small, there is a case where the marginal blackening correction effect is not sufficiently exhibited.

(5) Cosmetics of this invention The cosmetics of this invention are characterized by including the said essential component in the gel structure which bridge | crosslinking type dimethicone and cyclomethicone make. As the gel made of the crosslinked dimethicone and cyclomethicone, for example, a commercially available gel-like composition composed of crosslinked dimethicone and cyclomethicone can be used. Examples of such a gel composition include “silicone KSG-16” (cross-linked dimethicone 25 mass%, cyclomethicone 75 mass%) manufactured by Shin-Etsu Chemical Co., Ltd. Such a gel composition is used by adjusting so as to contain 5 to 20% by mass of a crosslinked dimethicone, more preferably 10 to 15% by mass and 30 to 60% by mass of cyclomethicone, more preferably 35 to 55% by mass. do it. Adjustment can be appropriately performed by adding cyclomethicone or acrylic-modified silicone. Examples of the acrylic-modified silicone include “silicone KP545” (MMA, butyl methacrylate, 2-ethylhexyl acrylate, acrylmethylsiloxane copolymer 30% by mass, cyclomethicone 70% by mass; Shin-Etsu Chemical Co., Ltd.) Etc. can be preferably exemplified. The acrylic-modified silicone is preferably contained in an amount of 0.1 to 10% by mass, more preferably 0.5 to 3% by mass with respect to the cross-linked dimethicone, since the pore orientation of the powder is improved.

  In the cosmetics of this invention, the arbitrary component normally used by cosmetics other than the said component can be contained. Examples of such optional ingredients include macadamia nut oil, avocado oil, corn oil, olive oil, rapeseed oil, sesame oil, castor oil, safflower oil, cottonseed oil, jojoba oil, coconut oil, palm oil, liquid lanolin, and hardened coconut oil. Oil, wax, oil such as beeswax, canola wax, carnauba wax, ibotarou, lanolin, reduced lanolin, hard lanolin, jojoba wax, liquid paraffin, squalane, pristane, ozokerite, paraffin, ceresin, petrolatum , Hydrocarbons such as microcrystalline wax; higher fatty acids such as oleic acid, isostearic acid, lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, undecylenic acid; cetyl alcohol, stearyl alcohol, isostearyl Higher alcohols such as alcohol, behenyl alcohol, octyldodecanol, myristyl alcohol, cetostearyl alcohol; cetyl isooctanoate, isopropyl myristate, hexyldecyl isostearate, diisopropyl adipate, di-2-ethylhexyl sebacate, cetyl lactate, malic acid Diisostearyl, di-2-ethylhexanoic acid ethylene glycol, dicaprate neopentyl glycol, di-2-heptylundecanoic acid glycerin, tri-2-ethylhexanoic acid glycerin, tri-2-ethylhexanoic acid trimethylolpropane, tri Synthetic ester oils such as trimethylolpropane isostearate and pentane erythritol tetra-2-ethylhexanoate; dimethylpolysiloxane, methylphenylpoly Linear polysiloxanes such as oxane and diphenylpolysiloxane; cyclic polysiloxanes such as octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexanesiloxane; amino-modified polysiloxane, polyether-modified polysiloxane, alkyl-modified polysiloxane, Oil agents such as silicone oils such as modified polysiloxanes such as fluorine-modified polysiloxanes; Anionic surfactants such as fatty acid soap (sodium laurate, sodium palmitate, etc.), potassium lauryl sulfate, triethanolamine ether of alkyl sulfates; Cationic surfactants such as stearyltrimethylammonium, benzalkonium chloride, laurylamine oxide; imidazoline-based amphoteric surfactants (2-cocoyl-2-imida Zolinium hydroxide-1-carboxyethyloxy disodium salt, etc.), betaine surfactants (alkyl betaine, amide betaine, sulfobetaine, etc.), and amphoteric surfactants such as acylmethyltaurine; sorbitan fatty acid esters (sorbitan) Monostearate, sorbitan sesquioleate, etc.), glycerin fatty acids (eg, glyceryl monostearate), propylene glycol fatty acid esters (eg, propylene glycol monostearate), hardened castor oil derivatives, glycerin alkyl ethers, POE sorbitan fatty acid esters (POE sorbitan monooleate, polyoxyethylene sorbitan monostearate, etc.), POE sorbite fatty acid esters (POE-sorbitol monolaurate, etc.), POE glycerin fatty acid ester Tells (POE-glycerol monoisostearate, etc.), POE fatty acid esters (polyethylene glycol monooleate, POE distearate, etc.), POE alkyl ethers (POE2-octyldodecyl ether, etc.), POE alkylphenyl ethers (POE nonylphenyl) Ethers, etc.), Pluronic types, POE / POP alkyl ethers (POE / POP2-decyltetradecyl ether, etc.), Tetronics, POE castor oil / hardened castor oil derivatives (POE castor oil, POE hardened castor oil, etc.), Nonionic surfactants such as sucrose fatty acid ester and alkyl glucoside; polyethylene glycol, glycerin, 1,3-butylene glycol, erythritol, sorbitol, xylitol, maltitol, propylene Polyhydric alcohols such as recall, dipropylene glycol, diglycerin, isoprene glycol, 1,2-pentanediol, 2,4-hexanediol, 1,2-hexanediol, 1,2-octanediol; sodium pyrrolidonecarboxylate Moisturizing ingredients such as lactic acid and sodium lactate; powders such as mica, talc, kaolin, synthetic mica, calcium carbonate, magnesium carbonate, anhydrous silicic acid (silica), aluminum oxide, barium sulfate, etc. whose surface may be treated Body, the surface may be treated, inorganic pigments such as bengara, yellow iron oxide, black iron oxide, cobalt oxide, ultramarine, bitumen, titanium oxide, zinc oxide; surface may be treated, mica Pearl agents such as titanium, fish phosphorus foil, bismuth oxychloride; red 202 which may be raked, red Color 228, Red 226, Yellow 4, Blue 404, Yellow 5, Red 505, Red 230, Red 223, Orange 201, Red 213, Yellow 204, Yellow 203, Blue 1 No., green 201, purple 201, red 204, etc .; organic powders such as polyethylene powder, polymethyl methacrylate, nylon powder, organopolysiloxane elastomer; para-aminobenzoic acid UV absorbers; anthranils Acid UV absorbers; salicylic acid UV absorbers; cinnamic acid UV absorbers; benzophenone UV absorbers; sugar UV absorbers; 2- (2′-hydroxy-5′-t-octylphenyl) benzo Ultraviolet absorbers such as triazole and 4-methoxy-4′-t-butyldibenzoylmethane; lower grades such as ethanol and isopropanol Alcohols; vitamin A or derivatives thereof, vitamin B6 hydrochloride, vitamin B6 tripalmitate, vitamin B6 dioctanoate, vitamin B2 or derivatives thereof, vitamin B such as vitamin B12, vitamin B15 or derivatives thereof; α-tocopherol, β- Preferred examples include vitamins such as tocopherol, γ-tocopherol and vitamin E acetate, vitamin D, vitamin D, vitamin H, pantothenic acid, panthetin, pyrroloquinoline quinone and the like; and antibacterial agents such as phenoxyethanol.

  The cosmetic of the present invention can be produced by treating such components according to a conventional method. The cosmetic material of the present invention thus obtained has a function of correcting pore correction, more specifically, correcting darkening of the pore edge. For this reason, it is preferably used as a cosmetic for correcting pores. Such a pore correction cosmetic is preferably used as a base material, and by using in this manner, the uniform application property of the makeup cosmetic that is inhibited by the three-dimensional shape of the pores is improved, The loss of makeup effect due to the color effect of pores can be reduced. Hereinafter, examples will be described in further detail.

  The cosmetic of the present invention was produced according to the formulation shown below. C was added and mixed well and dispersed, and gradually added to solubilize and stirred under reduced pressure to obtain a cosmetic 1 for correcting pores. In the same manner, Comparative Example 1 in which water was replaced with cyclomethicone, Comparative Example 2 in which multiple beads II were replaced with silica, Comparative Example 3 in which 10% by mass of silica was replaced with multiple beads II, Dermal Real Leaf Comparative Example 4 in which N and TPM powder 2003 were replaced with silica was also produced in the same manner.

<Evaluation 1>
The effect of correcting pores was examined using a panel with conspicuous pores. That is, an enlarged photograph of the pores of the cheeks after face washing was taken with a video microscope, and then treated with pore correction cosmetics and the same part was taken again. Each image was binarized, and the pores were set as a set of black dots. The number of black spots after pore correction treatment was divided by the number of black spots before correction, and multiplied by 100 to obtain the corrected residual rate. The results are shown in Table 2. From this, it can be seen that the cosmetic of the present invention is excellent in pore correction effect. In particular, in Comparative Example 4, black spots that seem to be caused by darkening remained on the edge of the pores. However, since such a point disappears in the cosmetic 1, blackening correction at the edge is effective. It is inferred that this led to a significant improvement.

<Evaluation 2>
The makeup finish when the following foundation was applied after pore correction was evaluated by paying attention to the pores. That is, the presence of pores after make-up was evaluated based on the following criteria: score 1: clearly understood, score 2: faintly understood, score 3: clearly understood but not noticed, score 4: completely unknown. The results are shown in Table 4. It can be seen that the cosmetic of the present invention is suitable as a base material.

<Evaluation 3>
In order to investigate the optical properties of the cosmetic of the present invention, specular reflectance and diffuse transmittance were examined. For comparison, Comparative Example 4 close to the conventional pore correction fee was also measured. Cosmetics 1 had a specular reflectance of 85.1% and a diffuse transmittance of 77%, while Comparative Example 4 had a specular reflectance of 72% and a diffuse transmittance of 95%. It can be seen that the cosmetic of the present invention improves the specular reflectance while maintaining diffuse transmission.

  As in Example 1, a cosmetic material 2 for correcting pores was prepared. This product had a pore residual ratio of 9.8% and an evaluation score of 4.

  In the same manner as in Example 1, a cosmetic material 3 for correcting pores was prepared. This product had a pore residual ratio of 10.3% and an evaluation score of 4.

  The present invention can be applied to cosmetics such as pore correction cosmetics.

Claims (6)

1) In a gel structure formed by cross-linked dimethicone and cyclomethicone, 2) 1 to 10% by mass of water, 3) 15 to 40% by mass of silica, and 4) 1 to 10% by mass of titanium dioxide-coated spherical powder 5) A cosmetic comprising 0.5 to 5% by mass of sericite, the surface of which may be coated with another metal oxide. 2. The cosmetic according to claim 1, wherein the gel structure formed by the crosslinked dimethicone and cyclomethicone contains 5 to 20% by mass of the crosslinked dimethicone and 30 to 60% by mass of the cyclomethicone. The cosmetic according to claim 1 or 2, wherein the titanium dioxide-coated spherical powder contains titanium dioxide-coated silica. The sericite whose surface may be coated with the other metal oxide is a sericite obtained by binding silica / bengara-coated titanium sericite and / or silica and titanium dioxide with polymethyl methacrylate as a binder. The cosmetic according to any one of claims 1 to 3, wherein the cosmetic is characterized. The cosmetic according to any one of claims 1 to 4, wherein the cosmetic is for pore correction. The cosmetic according to any one of claims 1 to 5, wherein the cosmetic is a base cosmetic.