JP4464781B2 - Sebum removal cosmetics - Google Patents

Description

  The present invention relates to a cosmetic, and more particularly to a cosmetic suitable for removing sebum.

  In order to keep the skin healthy, "horn plugs", which are formed by accumulation of old stratum corneum and lipid metabolites in pores, etc., become a hotbed for skin resident bacteria and cause comedones, so they are removed Is an important issue for skin care. As a method for removing such a square plug, for example, a method of adsorbing to an adhesive component of a pack cosmetic, or applying an adhesive on a support, and performing adhesive peeling with this adhesive is generally performed. As the pressure-sensitive adhesive, vinyl pyrrolidone / vinyl acetate copolymer, vinyl acetate polymer emulsion or the like is usually used. (For example, refer to Patent Documents 1 to 6) The most advanced product of such a preparation is such that the adhesive is spread on a support such as a nonwoven fabric, and moisture is contained in the adhesive at the time of use. However, it is a cosmetic that peels after confirming that it is dry, but in such a usage form, the use part is a place where sebum secretion is significant such as the nose, so sebum and There were drawbacks in that the adhesion of the skin was hindered or the adhesive strength was too strong, and the epidermis was peeled off.

  There is a method for removing horn plugs by dissolving lipids constituting the horn plugs with oil or polyhydric alcohol, and then removing the horn plugs. In the method, how to remove other components after lipid removal is a problem, and usually relied on natural spillage by sweat or oil, and there was a limit in that sense.

  There is already a type of "warm cosmetic" that contains a large amount of polyhydric alcohol and releases heat of hydration due to moisture on the skin when applied on the skin, increasing blood flow, and in aesthetics It is used for purposes such as creating comfort. (For example, refer to Patent Document 7 and Patent Document 8) However, there is no application of such cosmetics to the removal of square plugs.

  Cosmetics containing 1) polyhydric alcohol 70-99% by mass and 2) 0.005-0.5% by mass of charcoal are not known at all, and cosmetics having such a configuration are excellent in removing horn plugs. Was not known at all.

JP 2003-12436 A JP 11-217313 A Japanese Patent Laid-Open No. 10-245319 JP-A-8-245340 JP-A-8-109119 WO00 / 69397 Japanese Patent Laid-Open No. 2003-300839 JP 2003-81765 A

  The present invention has been made under such circumstances, and an object of the present invention is to provide a method for removing a horn plug that has little influence on the skin.

In view of such a situation, the present inventors have sought for a method for removing horn plugs having little influence on the skin, and as a result of intensive research efforts, 1) polyhydric alcohol 70 to 99% by mass and 2) It has been found that cosmetics containing 0.005 to 0.5% by mass of charcoal have such properties and have completed the invention. That is, the present invention is as follows.
(1) A cosmetic comprising 1) polyhydric alcohol 70 to 99% by mass and 2) 0.005 to 0.5% by mass of charcoal.
(2) The cosmetic according to (1), wherein the polyhydric alcohol contains 60 to 80% by mass of glycerol with respect to the total amount of the cosmetic.
(3) The polyhydric alcohol contains 1 to 10% by mass of 1,2-pentanediol with respect to the total amount of the cosmetic, and is described in (1) or (2) Cosmetics. (4) The polyhydric alcohol contains 1 to 10% by mass of dipropylene glycol with respect to the total amount of the cosmetic, according to any one of claims 1 to 3. Cosmetics.
(5) The cosmetic according to any one of (1) to (4), wherein the charcoal is medicinal charcoal.
(6) The cosmetic according to any one of (1) to (5), wherein an average particle diameter of the charcoal is 0.05 to 1 μm.
(7) The charcoal is obtained by adding powdery charcoal having a particle size of 10 to 100 μm to an aqueous carrier, and crushed and dispersed in a sand mill in the presence of at least two kinds of media. Cosmetics of any one of (1)-(6).
(8) The cosmetic according to (7), wherein the two types of media used for the sand mill treatment are 1 mmφ beads and 0.3 mmφ beads.
(9) The cosmetic according to any one of (1) to (8), further comprising a triethanolamine salt of a carboxyvinyl polymer.
(10) The cosmetic according to any one of (1) to (9), wherein the cosmetic is for removing sebum.

  ADVANTAGE OF THE INVENTION According to this invention, the removal method of the square plug with little influence on skin can be provided.

(1) Polyhydric alcohol which is an essential component of the cosmetic of the present invention The cosmetic of the present invention is characterized by containing 70 to 99% by mass of polyhydric alcohol, more preferably 90 to 97% by mass. Such polyhydric alcohols are preferably liquids at 25 ° C. and 1 atm. Specifically, glycerin, diglycerin, 1,3-butanediol, isoprene glycol, 1,2-pentanediol, 1,2-hexane. Preferred examples include those having an average molecular weight of 800 or less among diol, 1,2-octanediol, and polyethylene glycol. These polyhydric alcohols can contain only one species, or can contain two or more species in combination. In containing a polyhydric alcohol, a preferred form is a combination of a plurality of polyhydric alcohols so as to contain 60 to 77% by mass, more preferably 72 to 87% by mass of glycerin, based on the total amount of the cosmetic. It is a form to contain. It is because moderate heat generation is obtained by taking such a form.

(2) Charcoal which is an essential component of the cosmetic of the present invention The cosmetic of the present invention contains 0.005 to 0.5 mass%, more preferably 0.05 to 0.3 mass% of charcoal as an essential component. It is characterized by doing. As such charcoal, any carbon aggregate can be used without any particular limitation. For example, Bincho charcoal, medicinal charcoal, bamboo charcoal and the like can be suitably exemplified. Particularly preferred is medicinal charcoal widely used in cosmetics. Such charcoal is preferably contained in a finely pulverized form, and has an average particle size of at least 100.
It is preferable to adjust to μm or less, more preferably 1 μm or less. The charcoal having such a particle size is prepared by, for example, using a planetary ball mill or the like to prepare dry charcoal powder having a particle size of 10 to 100 μm in advance and mixing the charcoal powder with an aqueous carrier. It is preferable to charge in a high-speed bead mill such as a sand mill, add a medium, and perform crushed and dispersed. Zirconium beads are preferably used as the medium. In such a medium, it is preferable to use at least two kinds of media. The two kinds of media are not particularly limited as long as they are used in such a mill, but zirconium beads are preferable, and at least two kinds are relatively large beads of 0.8 to 3 mm and It is preferable to use at least two kinds of comparatively small size of 0.1 to 0.5 mm, and these at least two kinds of media can be crushed in two stages respectively. It is more preferable to use a mixture of seed media. These mixing ratios are preferably 1: 2 to 2: 1. Of course, it is possible to add and use a medium having a particle size other than two kinds. The medium is preferably used in a total amount of 10 to 10,000% by mass with respect to the mass of charcoal. In addition, such crushed is preferably performed using an aqueous carrier, and an aqueous solution of a polyhydric alcohol can be preferably exemplified as such an aqueous carrier. The content of the aqueous carrier is preferably 10 to 20 times the mass of the charcoal. Such aqueous carriers include sorbitan fatty acid esters (such as sorbitan monostearate and sorbitan sesquioleate), glycerin fatty acids (such as glyceryl monostearate), and propylene glycol fatty acid esters (such as propylene glycol monostearate). ), Hardened castor oil derivative, glycerin alkyl ether, POE sorbitan fatty acid esters (POE sorbitan monooleate, polyoxyethylene sorbitan monostearate, etc.), POE sorbite fatty acid esters (POE-sorbite monolaurate, etc.), POE glycerin Fatty acid esters (POE-glycerin monoisostearate, etc.), POE fatty acid esters (polyethylene glycol monooleate, POE distearate, etc.), POE alkyl ether (POE2-octyldodecyl ether, etc.), POE alkylphenyl ethers (POE nonylphenyl ether, etc.), Pluronic types, POE / POP alkyl ethers (POE / POP2-decyltetradecyl ether, etc.), Tetronics, POE castor It is good to add 1-5 mass% of nonionic surfactants, such as oil and hydrogenated castor oil derivative (POE castor oil, POE hydrogenated castor oil etc.), sucrose fatty acid ester, alkyl glucoside. By adding such components to a sand mill and treating for 30 to 120 minutes, a dispersion in which charcoal having an average particle size of 1 μm or less is dispersed is obtained. Such charcoal is excellent in the action of adsorbing sebum when administered on the skin. Thereby, constituent sebum can be removed from a square plug.

<Production Example 1>
A water carrier dispersion composition 1 was produced using medicinal charcoal powder crushed in advance by a planetary ball mill. That is, the prescription ingredients are charged into a sand mill, and 100% by mass of 1 mmφ zirconium beads and 100% by mass of 0.3 mmφ zirconium beads are added and subjected to crushed treatment for 1 hour, and the liquid part is recovered through a screen. A water carrier dispersion composition 1 was obtained. When the dispersion state was observed under a microscope, the average particle size of the charcoal was 0.5 μm.
Medicinal charcoal powder (average particle size 18μm) 10% by mass
90% by weight of water

(3) Cosmetics of this invention The cosmetics of this invention contain the said essential component, It is characterized by the above-mentioned. In the cosmetic of the present invention, in addition to the essential components, optional components usually used in cosmetics 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. Oils such as hardened oil, mole, hardened castor oil, beeswax, candelilla wax, carnauba wax, ibotarou, lanolin, reduced lanolin, hard lanolin, jojoba wax, waxes, liquid paraffin, squalane, pristane,
Hydrocarbons such as ozokerite, paraffin, ceresin, petrolatum, 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 alcohol, behenyl alcohol, octyldodecanol, myristyl alcohol, higher alcohols such as cetostearyl alcohol, cetyl isooctanoate, isopropyl myristate, hexyldecyl isostearate, diisopropyl adipate, di-2-ethylhexyl sebacate, lactic acid Cetyl, diisostearyl malate, ethylene glycol di-2-ethylhexanoate, neopentyl glycol dicaprate, di-2-heptyl Synthetic ester oils such as glycerin ndecanoate, glycerin tri-2-ethylhexanoate, trimethylolpropane tri-2-ethylhexanoate, trimethylolpropane triisostearate, pentane erythritol tetra-2-ethylhexanoate, dimethylpoly Chain polysiloxane such as siloxane, methylphenyl polysiloxane, diphenyl polysiloxane, cyclic polysiloxane such as octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexanesiloxane, amino-modified polysiloxane, polyether-modified polysiloxane, Oil agents such as silicone oils such as alkyl-modified polysiloxane and fluorine-modified polysiloxane, such as modified polysiloxane, fatty acid soap (sodium laurate, palmitic acid) Sodium), anionic surfactants such as potassium lauryl sulfate, alkylethanol triethanolamine ether, cationic surfactants such as stearyltrimethylammonium chloride, benzalkonium chloride, laurylamine oxide, imidazoline-based amphoteric surfactants ( Amphoteric surfactants such as 2-cocoyl-2-imidazolinium hydroxide-1-carboxyethyloxy disodium salt), betaine surfactants (alkyl betaine, amide betaine, sulfobetaine, etc.), acylmethyl taurine, etc. Sorbitan fatty acid esters (sorbitan monostearate, sorbitan sesquioleate, etc.), glycerin fatty acids (glyceryl monostearate, etc.), propylene glycol fatty acid esters (propylene glycol monostearate) ), Hydrogenated castor oil derivatives, glycerin alkyl ether, POE sorbitan fatty acid esters (POE sorbitan monooleate, polyoxyethylene sorbitan monostearate, etc.), POE sorbite fatty acid esters (POE-sorbite monolaurate, etc.) , POE glycerin fatty acid esters (POE-glycerin monoisostearate, etc.), POE fatty acid esters (polyethylene glycol monooleate, POE distearate, etc.), POE alkyl ethers (POE2-octyldodecyl ether, etc.), POE alkyl phenyl ethers (POE nonylphenyl ether, etc.), Pluronic types, POE / POP alkyl ethers (POE / POP2-decyltetradecyl ether, etc.), Tetronics, POE Non-detergent surfactants such as castor oil / hardened castor oil derivatives (POE castor oil, POE hardened castor oil, etc.), sucrose fatty acid esters, alkyl glucosides, polyvalents such as erythritol, sorbitol, xylitol, maltitol, propylene glycol Moisturizing ingredients such as alcohols, sodium pyrrolidone carboxylate, lactic acid, sodium lactate, guar gum, quince seed, carrageenan, galactan, gum arabic, pectin, mannan, starch, xanthan gum, curdlan, methylcellulose, hydroxyethylcellulose, carboxymethylcellulose, methyl Hydroxypropyl cellulose, chondroitin sulfate, dermatan sulfate, glycogen, heparan sulfate, hyaluronic acid, sodium hyaluronate, gum tragacanth, keratan sulfate Chondroitin, mucoitin sulfate, hydroxyethyl guar gum, carboxymethyl guar gum, dextran, keratosulfate, locust bean gum, succinoglucan, caronic acid, chitin, chitosan, carboxymethyl chitin, agar, polyvinyl alcohol, polyvinyl pyrrolidone, carboxyvinyl polymer, Thickener such as sodium polyacrylate, polyethylene glycol, bentonite, surface may be treated, mica, talc, kaolin, synthetic mica, calcium carbonate, magnesium carbonate, silicic anhydride (silica), aluminum oxide, sulfuric acid Powders such as barium, surface may be treated, bengara, yellow iron oxide, black iron oxide, cobalt oxide, ultramarine, bitumen, titanium oxide, zinc oxide inorganic pigments, surface may be treated Good, clouds Pearl agents such as mother titanium, fish phosphorus foil, bismuth oxychloride, red 202, red 228, red 226, yellow 4, blue 404, yellow 5 and red 505 which may be raked , Red 230, red 223, orange 201, red 213, yellow 204, yellow 203, blue 1, green 201, purple 201, red 204, organic dyes, polyethylene powder, poly Organic powders such as methyl methacrylate, nylon powder, organopolysiloxane elastomer, paraaminobenzoic acid UV absorber, anthranilic acid UV absorber, salicylic acid UV absorber, cinnamic acid UV absorber, benzophenone UV absorber Agent, sugar-based UV absorber, 2- (2′-hydroxy-5′-t-octylphenyl) benzotriazole, 4-methoxy-4′- UV absorbers such as t-butyldibenzoylmethane, lower alcohols such as ethanol and isopropanol, vitamin A or a derivative thereof, vitamin B6 hydrochloride, vitamin B6 tripalmitate, vitamin B6 dioctanoate, vitamin B2 or a derivative thereof, vitamin Vitamin B such as B12, Vitamin B15 or derivatives thereof, α-tocopherol, β-tocopherol, γ-tocopherol, vitamin E such as vitamin E acetate, vitamin D, vitamin H, pantothenic acid, panthetin, pyrroloquinoline quinone, etc. Of these, vitamins can be preferably exemplified. Among these, a thickener is particularly preferable, and a carboxyvinyl polymer is preferable, and it is particularly preferable to use triethanolamine as the counter base. This is because most of the components of the cosmetic of the present invention are polyhydric alcohols, and such a thickener is particularly suitable for thickening the system in such a system. The preferable content of the carboxyvinyl polymer is 0.1 to 1% by mass, more preferably 0.2 to 0.5% by mass. By containing such a thickener, a gel is formed and the cosmetic applied on the skin stays at the applied position, and by heating with an appropriate heat of hydration, corneal plug components other than sebum Extruded and gentle to the skin, the horn plug can be removed. The cosmetic of the present invention can be produced by treating the above components according to a conventional method. The cosmetic of the present invention is preferably applied as a cosmetic for removing horn plugs utilizing the warming characteristics.

  The present invention will be described in more detail with reference to the following examples, but it is needless to say that the present invention is not limited to such examples.

<Example 1>
The cosmetics of the present invention were prepared according to the formulations shown in Table 1 below. That is, the ingredient (a) was uniformly dissolved, and then the ingredient (b) was added to neutralize and gel, thereby obtaining the cosmetic 1 of the present invention.

<Test Example 1>
With regard to cosmetic 1, the effect of removing plugs was examined. The horn plug removal action is a syringe with a 27G needle attached to a pig skin soaked in physiological saline for one day and night, and the black artificial horn plug shown below is injected at a rate of 1 per 1 mm x 1 mm. The 2 cm × 5 cm nose model prepared in this manner was rubbed with 0.3 g of cosmetic for 5 minutes, then washed with warm water, wiped with a towel, and then the color difference from the non-treated portion was measured. At the same time, Comparative Example 1 in which the charcoal dispersion composition of Production Example 1 was replaced with water and Comparative Example 2 in which 10% by mass of 75% by mass of glycerin was replaced with water were also prepared and evaluated in the same manner. The results are shown in Table 2. From this, it is clear that the cosmetic of the present invention has an excellent action for removing keratin plugs.
(Artificial square plug)
Cholesterol 20% by mass
Squalane 30% by mass
10% olive oil
20% by weight of hydrogenated beef tallow
Keratin powder 20% by mass

<Example 2>
In the same manner as in Example 1, cosmetic 2 was prepared according to the formulation shown in Table 3 below. This was evaluated in Test Example 1 and ΔE was 0.45.

<Example 3>
In the same manner as in Example 1, cosmetic 3 was prepared according to the formulation shown in Table 4 below. This was evaluated by Test Example 1 and ΔE was 0.42.

  INDUSTRIAL APPLICABILITY The present invention can be applied to highly safe corner plug removal warming cosmetics.

Claims (9)

Cosmetics characterized by satisfying the following 1) to 3).
1) Containing 70 to 99% by mass of polyhydric alcohol 2) As the polyhydric alcohol, 1 to 10% by mass of 1,2-pentanediol and / or 1 to the total amount of the cosmetic Containing 10% by mass of dipropylene glycol
3) a child 0.005 to 0.5 wt% carbon   The cosmetic according to claim 1, wherein the polyhydric alcohol contains 60 to 80% by mass of glycerine with respect to the total amount of the cosmetic. The cosmetic according to claim 1 or 2, wherein the charcoal is medicinal charcoal . The average particle diameter in the said charcoal is 0.05-1 micrometer, Cosmetics in any one of Claims 1-3 characterized by the above-mentioned. The charcoal is obtained by adding powdered charcoal having a particle size of 10 to 100 μm to an aqueous carrier, and crushed and dispersed in a sand mill in the presence of at least two kinds of media. Cosmetics of any one of 1-4. The cosmetic according to claim 5 , wherein the two types of media used for the sand mill treatment are 1 mmφ beads and 0.3 mmφ beads . The cosmetic according to any one of claims 1 to 6, further comprising a triethanolamine salt of a carboxyvinyl polymer . The cosmetic according to any one of claims 1 to 7, wherein the cosmetic is for removing sebum . The cosmetic material according to any one of claims 1 to 8, wherein the cosmetic material is for removing horn plugs .