JP2007191410A - Vesicle-dispersed system hair cosmetic - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a preparation system exhibiting the effects of components such as a cationic surfactant, etc., for protecting the damage of the hair without a regret. <P>SOLUTION: This hair cosmetic is prepared for containing (1) a cationic surfactant of a 2-long chain type quaternary ammonium salt structure and (2) a ceramide (3) so as to become a vesicle-dispersing system. As the cationic surfactant of the 2-long chain type quaternary ammonium salt-structure, distearyldimonium chloride is preferable and as the ceramide, ceramide 3 is preferable. Further, it is preferable to contain 10-50 mass% polyhydric alcohol, and as the constitution of the polyhydric alcohol, ≥40 mass% of the polyhydric alcohol is preferably glycerol. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

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

  Since so far, so-called cationic surfactants such as quaternary ammonium salts and tertiary amine salts have been known to adsorb to damaged parts of hair and have an effect of protecting the damaged parts. The cosmetic composition is used to treat the hair after washing and care for the damaged area. Such a cosmetic composition is usually referred to as “rinse”, “(in bath) treatment”, “hair pack”, etc., and its use mode is that the cosmetic composition is diluted as it is or with hot water or the like. After applying, dipping or rinsing, the cosmetic is used in such a manner that excess cosmetic is washed with hot water or the like. This is because the cationic surfactant itself has a high skin irritation, and therefore it is necessary to leave no excess cationic surfactant in the living body. For such a use mode, in such a preparation, it is an important point how efficiently the damaged site can be protected while the hair and the cosmetic composition are in contact with each other. In addition, at this time, it can be said that not only the protection of the damaged site but also other care such as moisturizing the hair can be sufficiently performed, and whether or not it will be a good cosmetic for hair. .

  Usually, in such cosmetics for hair, the cationic surfactant often exists at the micelle interface in an emulsified form, and rarely takes a vesicle dispersion. Such vesicle dispersion preparations are not widely used in cosmetics, but are known to exhibit specific properties. (For example, refer to Patent Document 1 and Patent Document 2) However, it can be said that the present situation is that application to cosmetics for hair is not performed so much. One of the major reasons for this is that a formulation combination that forms such a vesicle dispersion and a highly stable system has not been found. Compositions characterized by rheology containing polyhydric alcohols and 2) one or more selected from cationic surfactants, amphoteric surfactants and cationic polymers are known (for example, Patent Document 3) 1) contains a cationic surfactant having 2 long-chain quaternary ammonium salt structure, 2) ceramide, and 3) cosmetics for hair with vesicle dispersion are known. Not.

Japanese Patent Laid-Open No. 03-14509 JP 2004-035557 A JP 2004-211078 A

  The present invention has been made under such circumstances, and an object of the present invention is to provide a pharmaceutical system that can fully exhibit the effects of components that protect hair damage such as a cationic surfactant.

In view of such a situation, as a result of intensive research efforts, the present inventors have sought for a pharmaceutical system that can fully demonstrate the effects of components that protect hair damage such as a cationic surfactant. It was found that a cosmetic comprising 2) a long-chain quaternary ammonium salt structure, 2) ceramide, and 3) a vesicle dispersion has such properties, and It came to complete. That is, the present invention is as follows.
(1) A cosmetic for hair, comprising 1) a cationic surfactant having a long-chain quaternary ammonium salt structure, 2) ceramide, and 3) a vesicle dispersion.
(2) The cosmetic for hair according to (1), wherein the cationic surfactant having a two-long-chain quaternary ammonium salt structure is distedimimonium chloride.
(3) The cosmetic for hair according to (1) or (2), wherein the ceramide is ceramide 3.
(4) The cosmetic for hair according to any one of (1) to (3), further comprising 10 to 50% by mass of a polyhydric alcohol.
(5) The cosmetic for hair according to (4), wherein 40% by mass or more of the polyhydric alcohol is glycerin as the polyhydric alcohol.
(6) The cosmetic according to (4) or (5), wherein the polyhydric alcohol contains glycerin at a content of 8 to 50% by mass relative to the total amount of the cosmetic.
(7) The cosmetic for hair according to any one of (1) to (6), wherein the cosmetic is a treatment or a rinse.

  ADVANTAGE OF THE INVENTION According to this invention, the formulation system which can fully exhibit the effect of the component which protects damage of hair, such as a cationic surfactant, can be provided.

(1) A cationic surfactant having a two-long-chain quaternary ammonium salt structure, which is an essential component of the cosmetic of the present invention. The cosmetic of the present invention is a cationic surfactant having a two-long-chain quaternary ammonium salt structure. Is contained as an essential component. The cationic surfactant having the two long-chain quaternary ammonium salt structure is a long-chain alkyl group or alkenyl group having 10 to 30 carbon atoms on a nitrogen atom, and a short-chain chain having 1 to 3 carbon atoms. A cationic surfactant having a structure of a quaternary ammonium salt in which two alkyl groups are bonded, and examples of the salt include chloride, bromide, nitrate, phosphate, carbonate and the like. Distearyl dimonium chloride, dicocodimonium chloride and the like can be suitably exemplified. Particularly preferred is distearyl dimonium chloride particularly preferably. Such a component can contain only one species or a combination of two or more species. Such an ingredient covers the damaged part of the hair in the cosmetic for hair of the present invention, prevents the function of the hair from being lowered due to the damage, and prevents the damage of the hair from spreading further widely. Have. Furthermore, a vesicle dispersion system can be formed together with ceramide, which is an essential component described later, whereby the effect on the hair can be expressed more reliably. In other words, it is more efficiently adsorbed to the hair damage site in a short time. In order to achieve such effects, such components are preferably contained in a total amount of 1 to 15% by mass, more preferably 1.5 to 10% by mass, based on the total amount of the cosmetic.

(2) Ceramide as an essential component of the cosmetic of the present invention The cosmetic of the present invention can contain ceramide. Ceramides are known to exist in types 1 to 7, but any of them can be used in the cosmetic of the present invention. Ceramide types 2 to 3 are preferable, and ceramide 3 is more preferable. Of course, two or more kinds of ceramides may be combined and contained. This is because the inclusion of this compound makes it easy to form a vesicle dispersion, and thus the effect of the cationic surfactant can be expressed more efficiently and reliably. By adopting such a vesicle dispersion system, the vesicle is easily oriented inside the hair, and the cationic surfactant in the vesicle is more accurately adsorbed to the hair damage site, and has an effect of covering and protecting. become. In order to achieve such an effect, the total amount of ceramide is preferably 0.1 to 10% by mass, more preferably 0.5 to 5% by mass with respect to the total amount of the cosmetic.

(3) Cosmetics of the present invention The cosmetics of the present invention are for hair, contain the essential components, and are vesicle dispersions. The cosmetics for hair are not particularly limited as long as they are already on the market, but examples include treatments, in bath hair packs, out bath hair packs, rinses, hair creams, and hair lotions. Particularly preferred examples include washing-type treatments, in bath hair packs and rinses. This is because the use mode of the cationic surfactant is suitable for washing-out use. Further, in terms of formulation, in cosmetics for hair containing such a cationic surfactant, as described in the background art, it is usually easy to take an emulsifying system, and a lamellar phase multilayering agent in a special form. Take shape and vesicle dispersion. Such a difference in formulation system is identified by observation with an electron microscope. In the combination of the essential components of the cosmetic of the present invention, it exists stably as a vesicle dispersion. In order to stabilize such a vesicle dispersion system, it is preferable to contain 10-50 mass% of polyhydric alcohol, More preferably, it is 15-30 mass%. Especially, it is preferable that 40 mass% or more of such a polyhydric alcohol, More preferably, 45 mass% or more is glycerol. As content of glycerol with respect to cosmetics whole quantity, 8-50 mass% is preferable, and 10-30 mass% is more preferable. Such polyhydric alcohols can be used without particular limitation as long as they are usually used in cosmetics. Other than glycerin, for example, propylene glycol, 1,3-butanediol, dipropylene glycol, dipropylene Preferable examples include glycerin, polyethylene glycol, isoprene glycol, 1,2-pentanediol, 1,2-hexanediol, 1,2-heptanediol, 1,2-octanediol, neopentyl glycol, sorbitol, maltitol and the like. . These can contain only a seed | species, and can also be contained in combination of 2 or more type.

  The cosmetic of the present invention can contain optional components usually used in cosmetics in addition to such components. 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, 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 not classified into two long-chain quaternary ammonium salts such as stearyltrimethylammonium, benzalkonium chloride, laurylamine oxide; imidazoline Amphoteric surfactants (2-cocoyl-2-imidazolinium hydroxide-1-carboxyethyloxy disodium salt, etc.), betaine surfactants (alkyl betaine, amide betaine, sulfobetaine, etc.), acylmethyl taurine, etc. Amphoteric surfactants: sorbitan fatty acid esters (such as sorbitan monostearate, sorbitan sesquioleate), glycerin fatty acids (such as glyceryl monostearate), propylene glycol fatty acid esters (such as propylene glycol monostearate), curing Castor oil derivatives, glycerin alkyl ethers, POE sorbitan fatty acid esters (POE sorbitan monooleate, polyoxyethylene sorbitan monostearate, etc.), POE sorbite fatty acid esters (POE-sorbitmo) Laurate, etc.), POE glycerin fatty acid esters (POE-glycerol monoisostearate, etc.), POE fatty acid esters (polyethylene glycol monooleate, POE distearate, etc.), POE alkyl ethers (POE2-octyldodecyl ether, etc.), POE alkyl Phenyl ethers (such as POE nonyl phenyl ether), Pluronic types, POE / POP alkyl ethers (such as POE / POP2-decyltetradecyl ether), Tetronics, POE castor oil / hardened castor oil derivatives (POE castor oil, POE hydrogenated castor oil, etc.), nonionic surfactants such as sucrose fatty acid ester, alkyl glucoside; moisturizing ingredients such as sodium pyrrolidonecarboxylate, lactic acid, sodium lactate; Powder, such as mica, talc, kaolin, synthetic mica, calcium carbonate, magnesium carbonate, silicic anhydride (silica), aluminum oxide, barium sulfate; surface treated, bengara, yellow iron oxide , Black iron oxide, cobalt oxide, ultramarine, bitumen, titanium oxide, zinc oxide inorganic pigments; surface treated pearlescent agents such as titanium mica, fish phosphorus foil, bismuth oxychloride; raked Red 202, Red 228, Red 226, Yellow 4, Blue 404, Yellow 5, Red 505, Red 230, Red 223, Orange 201, Red 213, Yellow 204 No., Yellow No. 203, Blue No. 1, Green No. 201, Purple No. 201, Red No. 204, etc .; polyethylene powder, polymethyl methacrylate, nylon powder, organo Organic powders such as polysiloxane elastomers; paraaminobenzoic acid UV absorbers; anthranilic acid UV absorbers; salicylic acid UV absorbers; cinnamic acid UV absorbers; benzophenone UV absorbers; sugar UV absorbers Agents; UV absorbers such as 2- (2′-hydroxy-5′-t-octylphenyl) benzotriazole and 4-methoxy-4′-t-butyldibenzoylmethane; lower alcohols such as ethanol and isopropanol; Vitamin B such as vitamin A or its derivative, vitamin B6 hydrochloride, vitamin B6 tripalmitate, vitamin B6 dioctanoate, vitamin B2 or its derivative, vitamin B12, vitamin B15 or its derivative; α-tocopherol, β-tocopherol, γ -Vita, such as tocopherol and vitamin E acetate Emissions E, vitamin D, vitamin H, pantothenic acid, pantethine, vitamins etc. pyrroloquinoline quinone and the like; and antibacterial agents such as phenoxyethanol preferred examples. The cosmetic of the present invention can be produced by treating these essential components and optional components according to a conventional method.

  Hereinafter, the present invention will be described in more detail with reference to examples, but it goes without saying that the present invention is not limited to such examples.

  In Bath Treatment 1, which is a cosmetic of the present invention, was produced according to the formulation shown below. That is, the prescription ingredients were dissolved by heating at 80 ° C., and stirred and cooled to obtain Invas Treatment 1. As a result of observation with an electron microscope, this was found to be a vesicle dispersion. When Comparative Example 1 was prepared by replacing distearyldimonium chloride of Invas Treatment 1 with stearyltrimonium chloride, which is a 1-chain quaternary ammonium salt, this became an emulsifier form, and a vesicle dispersion was formed. There wasn't. Moreover, although the comparative example 2 which substituted ceramide 3 with water was also created, this also became an emulsifier form and the vesicle dispersion system was not formed.

<Test Example 1>
About the said invas treatment 1, the comparative example 1, and the comparative example 2, the hair care effect with respect to the damaged hair was examined using the damaged hair bundle produced by processing with 1% hydrogen peroxide water. Prepare four hair bundles treated with 1% hydrogen peroxide solution, one is coated with Invas Treatment 1 and then washed. One is coated with Comparative Example 1 and then washed. One was coated with Comparative Example 2 and then washed and the remaining one was untreated. When these hair bundles were evaluated by a tensile test using Tensilon, the treatment hair bundle in Invas Treatment 1 was 2.1 times stronger than the non-treatment, whereas Comparative Example 1 The treated hair bundle was 1.6 times, and the treated hair in Comparative Example 2 was 1.3 times. The effect of the cosmetic of the present invention was confirmed.

<Test Example 2>
The damaged hair bundle treated in Invas Treatment 1, Comparative Example 1 and Comparative Example 2 prepared in Test Example 1 was immersed in a 0.1% fluorescein solution for 10 seconds, washed with running water for 30 seconds, and then observed with a fluorescence microscope. Then, 20 fields of view were captured as an image, the hair portion was cut out, binarized, and the portion emitting fluorescence was extracted by adsorption of fluorescein, and the area ratio was determined. The results are shown in Table 2. In the treated product of the cosmetic of the present invention, the fluorescent area is very small. From this, it was proved that the cosmetic of the present invention is excellent in the action of covering and protecting the damaged part.

  In the same manner as in Example 1, Invas Treatment 2, which is a cosmetic of the present invention, was prepared according to the following formulation. This was also a vesicle dispersion. This was 1.9 times in the evaluation of Test Example 1, and was 8.2 ± 5.5% in the evaluation of Test Example 2. It can be seen that ceramide 3 is preferable to ceramide 2 as the ceramide used in the cosmetic of the present invention.

  In the same manner as in Example 1, Invas Treatment 3 which is a cosmetic of the present invention was prepared according to the following prescription. This was also a vesicle dispersion. This was 1.8 times in the evaluation of Test Example 1, and was 10.3 ± 7.2% in the evaluation of Test Example 2. From this, it can be seen that the preferred form contains 10% by mass or more of polyhydric alcohol, 40% or more of polyhydric alcohol and 8% by mass or more of cosmetics.

  In the same manner as in Example 1, Invas Treatment 3 which is a cosmetic of the present invention was prepared according to the following prescription. This was also a vesicle dispersion. This was 2.0 times in the evaluation of Test Example 1 and was 5.9 ± 3.2% in the evaluation of Test Example 2.

  The present invention can be applied to cosmetics for hair.

Claims (7)

1. A cosmetic for hair, comprising 1) a cationic surfactant having a long-chain quaternary ammonium salt structure, 2) ceramide, and 3) a vesicle dispersion. The cosmetic for hair according to claim 1, wherein the cationic surfactant having the two long-chain quaternary ammonium salt structure is distedimimonium chloride. The cosmetic for hair according to claim 1 or 2, wherein the ceramide is ceramide 3. Furthermore, polyhydric alcohol is contained 10-50 mass%, Cosmetics for hair of any one of Claims 1-3 characterized by the above-mentioned. The cosmetic for hair according to claim 4, wherein 40% by mass or more of the polyhydric alcohol is glycerin as a constitution of the polyhydric alcohol. The cosmetic according to claim 4 or 5, wherein glycerin is contained in the polyhydric alcohol in a content of 8 to 50% by mass with respect to the total amount of the cosmetic. The cosmetic for hair according to any one of claims 1 to 6, wherein the cosmetic is a treatment or a rinse.