JP2007230929A - Face wash for removing horny plug - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide cosmetic having low irritancy and removing horny plug of the nostrils. <P>SOLUTION: The face wash contains a 6-20C dibasic acid diester. The 6-20C dibasic acid diester is preferably selected from diethyl adipate, diisopropyl adipate and diisopropyl sebacate, and the face wash preferably has an action to remove horny plug and further preferably contains spherical polyethylene powder. The spherical polyethylene powder preferably contains at least two kinds of powder having different average particle diameters and the cosmetic preferably contains a fatty acid soap as a detergent component. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a face wash, and more particularly, to a face wash having an action of removing a plug.

  The problem of horn plugs, a complex of lipid metabolites and stratum corneum that accumulates in pores, especially in the pores of the nose, in today's dietary habits that have significantly increased lipid intake. Is becoming a serious problem compared to a long time ago. Excessive accumulated horn plugs are said to cause acne and other symptoms due to microorganisms nested in the plugs. The horn plug that accumulates in the nose differs from the horn plug that accumulates in the scalp, etc., and is especially removed because it forms a complex of lipids with components that do not dissolve in the oil, such as exudates from the stratum corneum. It is said that it is difficult to do. Even if such symptoms do not occur, the presence of dark pores impairs the appearance of the person and may adversely affect the impression formation of others. Against this background, various means have been developed for efficiently and safely removing the plugs formed in the pores, particularly the pores of the nose. Such means include, for example, a method in which a square plug is adhered to a sticky sheet and then removed by peeling it off (see, for example, Patent Document 1), and an angle is obtained using an ester of lauroyl sarcosine. A method of dissolving the lipid of the stopper and removing it by a treatment such as suction (for example, see Patent Document 2), and a method of dissolving and removing the corner plug together with the stratum corneum by rubbing with a basic substance (for example, Patent Document 3), a method of removing while rubbing with a sticky foam (for example, see Patent Document 4), and a scrub cosmetic containing a keratolytic component such as urea or α-hydroxy acid to dissolve the keratin. And a method of scraping with a scrubbing agent (for example, see Patent Document 5). Among these, the method described in Patent Document 1 is highly safe and has a high removal effect, but requires suction by a suction device. In addition, the removal effect is the highest in the method described in Patent Document 5, but it is accompanied by the removal of horn plugs, although the expression of irritation due to abrasion is suppressed. There is a high possibility of stimulating. Accordingly, it has been desired to develop a cosmetic for removing horn plugs that has the same effect as that of the method described in Patent Document 5 but has a lower possibility of irritation. In particular, there has been a demand for the development of a cosmetic that can remove the lipid remaining in the pores after removing the horn plug and prevent the occurrence of comedones.

  On the other hand, as an attempt to remove square plugs by utilizing the cleaning ability of the cleaning material, a technique has been developed in which dextrin powder or cork powder is contained in the cleaning material as a scrubbing material and scavenged by this (for example, patents) Reference 6). However, with this technique, the removal of horn plugs depends only on the scrub material, so there was a limit to its effectiveness. Regarding scalp plugs, a technique for removing scalp plugs using a diester of sebacic acid is known (see, for example, Patent Document 7). No attempt has been made to formulate, and it is not known at all that nose horn plugs can be removed by such ingredients. In particular, it is not known at all that a combination of a fatty acid soap and a diester of a dibasic acid is suitable for removing a horn plug present in the nostril.

JP-A-2005-336124 JP 2005-97147 A JP 2004-75575 A JP 2001-139426 A JP 2003-292411 A JP 2003-342162 A Japanese Patent Laid-Open No. 10-120532

  The present invention has been made under such circumstances, and an object of the present invention is to provide a cosmetic that is less irritating and that can remove the corner plugs of the nose.

In view of such a situation, the present inventors have sought for a cosmetic material that is less irritating and capable of removing nasal horn plugs. As a result of intensive research efforts, the present inventors have obtained a dibasic acid diester having 6 to 20 carbon atoms. It has been found that the contained facial cleansing agent has such characteristics, and has completed the invention. That is, the present invention is as follows.
(1) A face wash comprising a dibasic acid diester having 6 to 20 carbon atoms.
(2) The face wash according to (1), wherein the dibasic acid diester having 6 to 20 carbon atoms is selected from diethyl adipate, diisopropyl adipate and diisopropyl sebacate.
(3) The face wash according to (1) or (2), wherein the face wash has an action of removing a square plug.
(4) The facial cleanser according to any one of (1) to (3), further comprising spherical polyethylene powder.
(5) The facial cleanser according to (4), wherein the spherical polyethylene powder contains at least two kinds of average particle diameters.
(6) The face wash according to any one of (1) to (5), wherein the face wash contains a fatty acid soap as a washing component.
(7) The facial cleanser according to any one of (1) to (6), which is a cosmetic used for removing a plug.

  ADVANTAGE OF THE INVENTION According to this invention, cosmetics with little irritation and which can remove the corner plug of a nose can be provided.

(1) Diester of dibasic acid which is an essential component of the face wash of the present invention The cosmetic of the present invention contains a diester of a dibasic acid having 6 to 20 carbon atoms as an essential component. That is, a dibasic acid having 2 to 10 carbon atoms and an alkyl diester having 2 to 6 carbon atoms are contained as essential components. The alkyl groups constituting the diester may be different or the same, but the same is more preferable. Preferred examples of such diesters include, for example, diethyl tartrate, diisopropyl tartrate, diethyl adipate, diisopropyl adipate, diethyl sebacate, diisopropyl sebacate, and diisopropyl sebacate is particularly preferred. These can contain only the seed | species, and can also contain it in combination of 2 or more type. Further, such components are general-purpose raw materials for cosmetics, and are easily available. In the face wash of the present invention, such a component has the effect of facilitating removal from the pores by dissolving the lipid in the solid structure around the square plug and the upper part of the square plug and dispersing it in the fatty acid soap solution, and removing it with warm water. Have In particular, it is considered that loosening the structure of the lipid on the top of the horn plug increases the adsorptivity with the polyethylene powder described later, which becomes a kind of float and the horn plug is adsorbed by the foam and detached. In order to express such an action, the total amount is preferably 0.01 to 10% by mass, more preferably 0.05 to 1% by mass with respect to the total amount of the face wash. This is because if the amount is too small, the above effect may not be achieved, and if the amount is too large, foaming of the fatty acid soap of the preparation may be impaired.

(2) Polyethylene powder which is a preferred component of the face wash of the present invention The face wash of the present invention is characterized by containing polyethylene powder in a preferred form. As a particle size of the said polyethylene powder, 1-1000 micrometers is preferable and 5-600 micrometers is more preferable. The shape is preferably spherical, and the spherical shape allows a maximum strain of plus or minus 10% from the circumscribed true sphere. As such polyethylene powder, it is preferable to combine two types of particle size distributions of large and small, and as the large particle size distribution, those having a particle size distribution of 200 to 600 μm can be preferably exemplified, The thing of 5-15 micrometers can be illustrated preferably. These can be classified to this size, or can be used after sieving, or commercially available products already having such a particle size distribution can be purchased and used. Examples of such commercially available products include “Flow Beads CL5007” (manufactured by Sumitomo Seika Co., Ltd.) having a particle size of 250 to 500 μm, “Flow Beads CL20200” (manufactured by Sumitomo Seika Co., Ltd.) having a particle size of 5 μm, and the like. Can be preferably exemplified. The mass ratio of the large and small polyethylene powders is preferably 250: 1 to 25: 4. Such a component seems to have an action of scraping out the square plug and an action of helping the polyethylene powder bound to the square plug to float and be adsorbed on the foam, and the square plug to escape from the pores. In order to exert such an action, the polyethylene powder is preferably contained in a total amount of 1 to 5% by mass, more preferably 1.5 to 3% by mass, based on the total amount of the face wash. . This is because if the amount is too small, the above-mentioned effect may not be exhibited, and if the amount is too large, the above-mentioned effect may reach a peak, and the effect of the dibasic acid diester may be impaired. Thus, by loosening the fixation structure of the horn plug with the diester of the dibasic acid, scraping it out with polyethylene powder, and floating on the foam, the horn plug can be removed without dissolving the horny layer of the skin. In addition, lipid soils in pores from which the square plugs have been removed can be washed with an aqueous fatty acid soap solution. For this reason, the horn plug can be removed with less influence on the stratum corneum barrier function and less influence on skin physiology.

(3) Facial cleanser of the present invention The facial cleanser of the present invention contains the above essential components and is used exclusively for aqueous facial cleansing. Usually, the facial cleansers are cream-type facial cleansers containing fatty acid potassium soap as a main cleaning component, fatty acid sodium soaps, acyl glutamates, amphoteric surfactants, sulfuric anionic surfactants, etc. Although there are face wash and the like, any of these can be applied as the face wash of the present invention, and particularly preferably applied to a creamy face wash containing fatty acid soap, especially, fatty acid potassium soap as a main washing component. Is preferred. This is because the combined effect of foam generated from fatty acid potassium soap, dibasic acid diester, and polyethylene powder is remarkable. Therefore, when using the facial cleanser of the present invention, foam well with warm water in the palm of the hand, put the foam on the face, and rub the nose well with this foam to remove the horn plugs present in the nose. be able to. Therefore, it is preferable to use in such a use mode. The strength of the foam waist can be adjusted to be strong or weak as appropriate depending on the presence of the square plug.

  The preferable content of the fatty acid potassium soap in a preferred form is a soap equivalent mass% formed by blending 15 to 25 mass% fatty acid and 6.5 to 8.5 mass% potassium hydroxide. Outside this range, there are cases where the washoff effect of the horn plug is impaired.

  In the face wash of the present invention, in addition to the above-mentioned components, optional components that are usually used in face wash can be contained within a range that does not impair the effects of the present invention. The external preparation for skin of the present invention can contain, in addition to such components, optional components that are usually used in external preparations for skin. Such optional ingredients include, for example, 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, hydrogenated 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, cetyl lactate, diisostearyl malate, ethylene di-2-ethylhexanoate Glycol, neopentyl glycol dicaprate, glycerin di-2-heptylundecanoate, glycerin tri-2-ethylhexanoate, trimethylolpropane tri-2-ethylhexanoate, trimethylolpropane triisostearate, tetra-2-ethylhexane Synthetic ester oils such as acid pentane erythritol; chain polysiloxanes such as dimethylpolysiloxane, methylphenylpolysiloxane, and diphenylpolysiloxane; Cyclic polysiloxanes such as kutamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexanesiloxane; silicones such as amino-modified polysiloxane, polyether-modified polysiloxane, alkyl-modified polysiloxane, and fluorine-modified polysiloxane Oils such as oils; Anionic surfactants such as potassium lauryl sulfate and alkylethanol triethanolamine ether; Cationic surfactants such as stearyltrimethylammonium chloride, benzalkonium chloride and laurylamine oxide; Imidazoline-based amphoteric surfactants Agents (2-cocoyl-2-imidazolinium hydroxide-1-carboxyethyloxy disodium salt, etc.), betaine surfactants (alkyl betaines, amide betaines, Amphoteric surfactants such as sulfobetaine, acylmethyltaurine, etc .; sorbitan fatty acid esters (sorbitan monostearate, sorbitan sesquioleate, etc.), glycerin fatty acids (eg glyceryl monostearate), propylene glycol fatty acid esters ( 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-sorbit monolaur) POE glycerin fatty acid esters (POE-glycerin monoisostearate, etc.), POE fatty acid esters (polyethylene glycol monooleate, POE diste) Rate), POE alkyl ethers (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 oil / hardened castor oil derivatives (POE castor oil, POE hardened castor oil, etc.), nonionic surfactants such as sucrose fatty acid ester, alkyl glucoside; polyethylene glycol, glycerin, 1, 3 -Butylene glycol, erythritol, sorbitol, xylitol, maltitol, propylene glycol, dipropylene glycol, diglycerin, isoprene glycol, 1,2-pentanediol, 2,4-hexanediol, 1 Polyhydric alcohols such as 2-hexanediol and 1,2-octanediol; moisturizing ingredients such as sodium pyrrolidonecarboxylate, lactic acid, sodium lactate; mica, talc, kaolin, synthetic mica whose surface may be treated , Powders such as calcium carbonate, magnesium carbonate, anhydrous silicic acid (silica), aluminum oxide, barium sulfate; surface may be treated, bengara, yellow iron oxide, black iron oxide, cobalt oxide, ultramarine, Inorganic pigments of bitumen, titanium oxide, zinc oxide; pearl agents such as titanium mica, fish phosphorus foil, bismuth oxychloride, which may be treated on the surface; red 202, red 228, which may be raked No., Red 226, Yellow No. 4, Blue No. 404, Yellow No. 5, Red No. 505, Red No. 230, Red No. 223, Orange No. 201, Red No. 213 No., Yellow No. 204, Yellow No. 203, Blue No. 1, Green No. 201, Purple No. 201, Red No. 204, etc .; Organic powders such as polymethyl methacrylate, nylon powder, organopolysiloxane elastomer; Paraaminobenzoic acid UV absorbers; Anthranilic acid UV absorbers; Salicylic acid UV absorbers; Cinnamic acid UV absorbers; Benzophenone UV absorbers; Sugar UV absorbers; 2- (2'-hydroxy- UV absorbers such as 5'-t-octylphenyl) benzotriazole and 4-methoxy-4'-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 its derivatives Vitamin Bs such as vitamin 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 Preferred examples include vitamins such as; antibacterial agents such as phenoxyethanol.

  The face wash of the present invention can be produced by treating the essential components, preferred components, and optional components according to a conventional method. The facial cleanser thus obtained can remove horn plugs accumulated in the small nose by washing.

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

  The face wash of the present invention was produced according to the formulation shown below. That is, the components (a) and (b) were each heated to 90 ° C., and (b) was gradually added to (a) while stirring. At the same time, Comparative Example 1 in which diisopropyl sebacate was replaced with water, and Comparative Example 2 in which stearic acid, myristic acid, lauric acid and potassium hydroxide were replaced with sodium POE (3) lauryl sulfate were similarly prepared.

<Test Example 1>
About the said face-wash 1 and the comparative example 1 and the comparative example 2, the paneler 1 group 5 persons and 3 groups 15 persons were used, and the removal effect of the square plug was investigated. That is, the nose of the panel was photographed with a “video microscope” manufactured by Moritex Co., Ltd., and the number of accumulated square plugs per field of view was counted. After that, the sample was used to wash the face, and 10 minutes after the face was washed again with a “video microscope”, and the number of accumulated square plugs per field of view was counted. The number of accumulated plugs after washing was divided by the number of accumulated plugs before washing, and multiplied by 100 to calculate the remaining rate of plugs. The results are shown in Table 2. From this, it can be seen that the face wash of the present invention is excellent in the action of removing the plug. Washing was performed by foaming face wash with a net in advance, applying it onto the face, rubbing it evenly by hand four times, and then pouring warm water over the entire face for 2 minutes with a shower.

<Test Example 2>
Two syringes each embedded with 40 mixtures of a 4: 1 mass ratio of keratin powder and castor oil at a depth of 1.5 mm were prepared using a syringe barrel equipped with a cloak needle on a silicone rubber plate. Using this as a small nose model, a horn plug removal test was conducted. One was applied with foamed facial cleanser 1 and rubbed by hand 4 times, and the warm water was allowed to flow for 2 minutes, and the other was applied with a commercially available square plug removal sheet. After the treatment, the rubber plate was exposed to iodine vapor for 5 minutes, and the coloring degree of the injection hole was compared. As a result, the treatment with the face wash 1 was significantly thinner. It became clear that pores could be washed.

  In the same manner as in face wash 1 of Example 1, face wash 2 which is the face wash of the present invention was produced according to the following formulation. According to the evaluation of Test Example 1, this had a plug retention rate of 15.3 ± 6.8%.

  In the same manner as in face wash 1 of Example 1, face wash 3 as a face wash of the present invention was produced according to the following formulation. According to the evaluation of Test Example 1, this had a plug retention rate of 14.9 ± 5.9%. This shows that the form containing two types of polyethylene powder is preferable.

  In the same manner as in face wash 1 of Example 1, face wash 4 as a face wash of the present invention was produced according to the following formulation. According to the evaluation of Test Example 1, this had a plug retention rate of 12.7 ± 6.1%. It can be seen that diisopropyl adipate has the same effect as diisopropyl sebacate.

  In the same manner as in face wash 1 of Example 1, face wash 5 as a face wash of the present invention was produced according to the following formulation. According to the evaluation of Test Example 1, this had a plug retention rate of 13.3 ± 5.7%. It can be seen that diethyl adipate has the same effect as diisopropyl sebacate.

  The present invention can be applied to a face wash capable of removing a square plug.

Claims (7)

A face wash comprising a dibasic acid diester having 6 to 20 carbon atoms. The face wash according to claim 1, wherein the dibasic acid diester having 6 to 20 carbon atoms is selected from diethyl adipate, diisopropyl adipate and diisopropyl sebacate. The face wash according to claim 1 or 2, wherein the face wash has an action of removing a square plug. The face wash according to any one of claims 1 to 3, further comprising spherical polyethylene powder. The facial cleanser according to claim 4, wherein the spherical polyethylene powder contains at least two kinds of average particle diameters. In the said face wash, fatty acid soap is contained as a washing | cleaning component, The face wash in any one of Claims 1-5 characterized by the above-mentioned. The facial cleanser according to any one of claims 1 to 6, wherein the facial cleanser is a cosmetic used for removing horn plugs.