JP2012171918A - Hair cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a non-aqueous hair cosmetic in which an oily ingredient is stably dissolved and which can improve the touch of hair.SOLUTION: The hair cosmetic is characterized by including a polyalkylene glycol, an ester-type nonionic surfactant which is liquid at normal temperature, and an oily ingredient which is liquid at normal temperature, wherein the content of water is ≤1 mass%. In the hair cosmetic, the average polymerization degree of the polyalkylene glycol is 4 to 12; and the oily ingredient which is liquid at normal temperature is preferably an acylamino acid ester.

Description

  The present invention relates to a non-aqueous hair cosmetic in which an oily component is stably dissolved and the touch of hair can be improved.

  For example, as described in Patent Document 1 and Patent Document 2, conventionally, non-aqueous hair cosmetics containing polyhydric alcohols and inorganic salts are known. In such non-aqueous hair cosmetics, heat is generated by contact with water during use, and therefore, the adsorptivity of active ingredients in the hair cosmetics to the skin and hair is improved.

  However, since the hair cosmetics as described above need to reduce the amount of water as much as possible to the extent that it is substantially anhydrous from the viewpoint of securing heat generation characteristics, the components that can be blended are extremely limited. Many of the various components effective for improving the feel of hair have a problem that they are deposited even if they are blended. For these reasons, there is room for improvement in the effect of improving the condition of the finished hair in the hair cosmetics having the heat generation characteristics as described above.

JP-A-56-77216 JP-A-11-228332

  This invention is made | formed in view of the said situation, The objective is to provide the non-aqueous hair cosmetics which the oil-based component melt | dissolves stably and can improve the touch of hair.

  The hair cosmetic composition of the present invention that has achieved the above object is composed of polyalkylene glycol, an ester-type nonionic surfactant that is liquid at room temperature, and an oily component that is liquid at room temperature, and has a water content. The content is 1% by mass or less.

  ADVANTAGE OF THE INVENTION According to this invention, the oily component can melt | dissolve stably and the hair cosmetics which can improve the touch of hair can be provided.

  Polyalkylene glycol generates heat when it is applied to wet hair, and has an action that makes the hair easily adsorbed by, for example, adsorbing the components constituting the hair cosmetic together with the polyalkylene glycol. Yes.

  The oily component that is liquid at room temperature (25 ° C. The same applies to “normal temperature” in the present specification) has the effect of enhancing the feel of the hair, and adheres to the hair that is heated by the polyalkylene glycol. Thus, it penetrates well and the above-mentioned action is exhibited better.

  However, since the polyalkylene glycol and the oily component that is liquid at room temperature hardly dissolve each other, it is difficult to prepare a hair cosmetic in which the oily component is stably dissolved. As a result of extensive studies, the present inventor has found that an ester-type nonionic surfactant that is liquid at room temperature can stably dissolve an oil component that is liquid at room temperature in polyalkylene glycol. The invention has been completed.

  The polyalkylene glycol according to the hair cosmetic composition of the present invention has an action of generating heat when the hair cosmetic composition is applied to wet hair.

  Specific examples of the polyalkylene glycol include polyethylene glycol and polypropylene glycol, and those having an average degree of polymerization of 4 or more and 12 or less are preferable. As the polyalkylene glycol, those exemplified above may be used alone or in combination of two or more. Among the polyalkylene glycols exemplified above, polyethylene glycol is preferable because of its higher exothermic action. The average degree of polymerization of the polyalkylene glycol is preferably 4 or more and 8 or less because it has a higher exothermic action. Therefore, as the polyalkylene glycol, polyethylene glycol having an average degree of polymerization of 4 or more and 8 or less is particularly preferable.

  The blending amount of the polyalkylene glycol in the hair cosmetic (amount in the total amount of 100% by weight of the hair cosmetic. The same applies hereinafter for the blending amount of each component in the hair cosmetic) so that the exothermic action can be exhibited better. From the viewpoint of making it, it is preferably 44% by mass or more. Moreover, the blending amount of the polyalkylene glycol in the hair cosmetic is preferably 99.4% by mass or less, and more preferably 99% by mass or less.

  In the hair cosmetic composition of the present invention, an ester-type nonionic surfactant that is liquid at room temperature is a composition that is effective for improving the feel of the hair, and is capable of stably dissolving an oily component that is liquid at room temperature in the hair cosmetic composition. It is an ingredient.

  Examples of the ester-type nonionic surfactant that is liquid at normal temperature include glycerin monofatty acid ester (glyceryl isostearate), polyglycerin fatty acid ester (diglyceryl monooleate, diglyceryl dioleate, diglyceryl monoisostearate, penta) Tetraglyceryl oleate, decaglyceryl monolaurate), sorbitan fatty acid ester (sorbitan monolaurate, sorbitan isostearate, sorbitan oleate, coconut oil fatty acid sorbitan, sorbitan monooleate), sucrose fatty acid ester (sucrose hexahexarate, sucrose pentaercaate) , Sucrose polyoleate) polyethylene glycol fatty acid ester [polyethylene glycol monolaurate (10E.O.), monooleate Ethylene glycol (2E.O.), polyethylene glycol monooleate (5E.O.), polyethylene glycol monooleate (6E.O.), polyethylene glycol monooleate (9E.O.), polyethylene glycol monooleate (10E.O.), polyethylene glycol monooleate (14E.O.), polyethylene glycol dilaurate (4E.O.)], polyoxyethylene glycerin fatty acid ester [coconut oil fatty acid POE (7) glyceryl, oleic acid POE (5) Glyceryl], polyoxyethylene sorbitan fatty acid ester [mono coconut oil fatty acid POE (20) sorbitan, monostearic acid POE (20) sorbitan, monolauric acid POE (20) sorbitan], polyoxyethylene sorbit Fatty acid esters such as [tetraoleate POE (30) sorbitol, tetraoleic acid POE (40) sorbitol], and the like, may be used only one of these may be used in combination of two or more. Among these, polyglycerin fatty acid ester and polyoxyethylene glycerin fatty acid ester are more preferable in that the action of stably dissolving a liquid oily component at room temperature is more excellent.

  In each of the nonionic surfactants exemplified above, “EO” in parentheses means ethylene oxide, and the numerical value before “EO” means the average number of moles of added ethylene oxide. is doing. In each of the nonionic surfactants exemplified above, “POE” is an abbreviation for polyoxyethylene, and the numerical value in parentheses after that means the average number of moles of ethylene oxide added (this specification) The same applies to the nonionic surfactant described in 1).

  In the hair cosmetic composition of the present invention, the oily component that is liquid at room temperature is a component that contributes to improved hair feel.

  As the oily component that is liquid at normal temperature, for example, esters, higher alcohols, vegetable oils and the like are preferable.

  Examples of liquid esters at room temperature include isopropyl myristate, butyl myristate, isopropyl palmitate, ethyl stearate, cetyl caprylate, hexyl laurate, isostearyl laurate, decyl myristate, isotridecyl myristate, and myristic acid 2 -Straight chain such as hexyldecyl, isostearyl myristate, 2-octyldodecyl myristate, 2-ethylhexyl palmitate, 2-hexyldecyl palmitate, isostearyl palmitate, 2-ethylhexyl stearate, 2-hexyldecyl stearate Saturated fatty acid ester; ethyl isostearate, isopropyl isostearate, cetyl 2-ethylhexanoate, cetostearyl 2-ethylhexanoate, stear 2-ethylhexanoate Hexyl isostearate, 2-octyldodecyl neopentanoate, 2-hexyl decyl 2-ethylhexanoate, isostearyl 2-ethylhexanoate, 2-ethylhexyl isononanoate, isononyl isononanoate, 2-hexyldecyl dimethyloctanoate, dimethyl Branched saturated fatty acid esters such as 2-octyldodecyl octoate, 2-ethylhexyl isopalmitate, 2-hexyldecyl isostearate, isostearyl isostearate, 2-octyldodecyl isostearate; ethyl oleate, ethyl linoleate, linoleic acid Isopropyl, decyl oleate, isodecyl oleate, 2-octyldodecyl oleate, oleyl oleate, cetyl ricinoleate, 2-octyldodecyl ricinoleate, maleic erucate Unsaturated fatty acid esters such as yl; acyl amino acid esters such as N-lauroyl-L-glutamate di-2-hexyldecyl, N-lauroyl-L-glutamate diisostearyl, lauroylglutamate dioctyldodecyl, stearoylglutamate dioctyldodecyl; 1 type of these may be used and 2 or more types may be used together.

  Examples of higher alcohols that are liquid at room temperature include branched alcohols having 12 to 22 carbon atoms, such as branched saturated alcohols such as isostearyl alcohol and octyldodecanol; unsaturated alcohols such as oleyl alcohol; and the like. Examples include alcohol. In the hair cosmetic composition of the present invention, only one of these higher alcohols may be used, or two or more kinds may be used in combination.

  Examples of vegetable oils that are liquid at room temperature include jojoba oil, meadow foam oil, camellia oil, tea seed oil, olive oil, grape seed oil, avocado oil, safflower oil, macadamia nut oil, rice germ oil, and the like. Only 1 type of them may be used and 2 or more types may be used together.

  Among these oily components, an ester that is liquid at normal temperature is more preferable, and an acylamino acid ester that is liquid at normal temperature is particularly preferable in that the effect of improving the feel of hair is more excellent.

  The hair cosmetic composition of the present invention is a non-aqueous hair cosmetic composition, and the content of water is set to 1% by mass or less from the viewpoint of enabling a good exothermic effect. The water content in the hair cosmetic is particularly preferably 0% by mass.

  Moreover, it is preferable to further mix | blend the polyhydric alcohol other than polyalkylene glycol or a polyoxyethylene polyoxypropylene derivative with the hair cosmetics of this invention from a viewpoint of improving the operativity at the time of apply | coating to hair.

  Specific examples of polyhydric alcohols other than polyalkylene glycols include viscous polyhydric alcohols such as propylene glycol, 1,3-butylene glycol, glycerin, diglycerin, polyglycerin, and the like. Only 1 type may be used and 2 or more types may be used together.

  What is necessary is just to set suitably the compounding quantity of polyhydric alcohol other than polyalkylene glycol in hair cosmetics so that the applicability | paintability and heat_generation | fever desired for hair cosmetics can be ensured, Specifically, 1-40 mass%. It is preferable that

  Specific examples of the polyoxyethylene polyoxypropylene derivative include, for example, polyoxyethylene polyoxypropylene hexylene glycol, polyoxyethylene polyoxypropylene butyl ether, polyoxyethylene polyoxypropylene glyceryl ether, and the like. Only 1 type may be used and 2 or more types may be used together.

  What is necessary is just to set suitably the compounding quantity of the polyoxyethylene polyoxypropylene derivative in hair cosmetics so that the applicability | paintability and heat_generation | fever desired for hair cosmetics can be ensured, Specifically, 0.5-2 mass. % Is preferred.

  In addition to the above-described components, the hair cosmetic composition of the present invention may contain various components used in ordinary non-aqueous cosmetic compositions as needed, as long as the effects of the present invention are not impaired. Can be blended. Examples of such components include protein derivatives, plant extracts, preservatives, fragrances, organic acids, lower alcohols, and the like.

  Examples of protein derivatives include keratin protein derivatives (such as hydrolyzed keratin), collagen protein derivatives (such as hydrolyzed collagen), silk protein derivatives, and soy protein derivatives.

  As plant extracts, for example, Tokisenka extract, bitter orange peel extract (spruce extract), ginger extract, licorice extract and the like can be mentioned. Examples of the preservative include sodium benzoate, methyl paraoxybenzoate, propyl paraoxybenzoate, butyl paraoxybenzoate, phenoxyethanol, methylchloroisothiazolinone / methylisothiazolinone solution, 2-methyl-4-isothiazoline-3- ON etc. are mentioned. Examples of the organic acid include citric acid, glycolic acid, tartaric acid, and lactic acid. Examples of the lower alcohol include alcohols having 1 to 6 carbon atoms such as ethanol, isopropanol, and butanol.

  When the hair cosmetic composition of the present invention is used, an appropriate amount is applied to wet hair (for example, hair washed with shampoo and washed away with water). As a result, the hair to which the hair cosmetic material is attached generates heat, so that various components in the hair cosmetic material are adsorbed and penetrated well into the hair, improving the feel of the hair. In addition, the polyalkylene glycol according to the hair cosmetic composition of the present invention has not only a heat generating action but also an action of increasing the softness of the scalp by adhering to the scalp. Therefore, the hair cosmetic composition of the present invention is applied to wet hair, and the hair cosmetic composition adheres to the scalp, thereby improving the feel of the hair and the softness of the scalp.

  The hair to which the hair cosmetic of the present invention is applied may be finished by, for example, washing with water and drying. For example, after the hair cosmetic of the present invention is applied to the hair (and scalp), the scalp is massaged. It is also preferable, and this makes it possible to further increase the softness of the scalp.

  In addition, a known hair treatment (including a hair rinse and a hair conditioner) may be applied before or after application of the hair cosmetic of the present invention. In this case, due to the exothermic action of the hair cosmetic of the present invention, Adsorption to the hair of the hair treatment increases, and the permeability to the hair treatment hair improves. Therefore, it becomes possible to further enhance the effect of improving the condition of the hair by the hair treatment.

  Hereinafter, the present invention will be described in detail based on examples. However, the following examples do not limit the present invention. In Table 1 below, the blending amount of each component is shown in% so that the total amount of hair cosmetics is 100%. All the percentages are mass%, and in Table 1, the percentages are indicated. Is omitted, and only the numerical value indicating the blending amount is displayed.

Examples 1-3 and Comparative Examples 1-4
The hair cosmetics of Examples 1 to 3 and Comparative Examples 1 to 4 were prepared with the compositions shown in Table 1.

  The polyethylene glycol used in the above examples has an average degree of polymerization of 8. Further, in Table 1, “with a total of 100” in the column of polyethylene glycol in the hair cosmetic is 100% by adding the amount of polyethylene glycol to the total amount of each component other than polyethylene glycol constituting the hair cosmetic. It means that it became to become. Furthermore, the numerical value in the parenthesis of “isoalkyl (C10-40) amidopropylethyldimonium ethosulphate” in Table 1 means that the alkyl part is a mixture having 10 to 40 carbon atoms.

  About the hair cosmetics of Examples 1-3 and Comparative Examples 1-4, the following temporal stability evaluation and evaluation of the touch of the hair after a process were performed. These results are shown in Table 2.

<Stability evaluation over time>
After putting 100 ml of hair cosmetics of Examples 1 to 3 and Comparative Examples 1 to 4 in separate screw tubes, and putting these screw tubes in a thermostat adjusted to 45 ° C. and −2 ° C. for one month It took out and the change of the state of each hair cosmetics before putting in a thermostat was confirmed visually.

<Evaluation of hair feel improvement effect>
After collecting 10 g of hair collected from the same person into a plurality of hair bundles and wetting these hair bundles, 5 ml of each of the hair cosmetics of Examples 1 to 3 and Comparative Examples 1 to 4 are separated into different hair bundles. Then, it was washed with water and dried to finish. Five professional evaluators evaluated the change in the feel of the hair related to each finished hair bundle from before the treatment, and scored according to the following criteria.
After treatment is better ... 2 points.
Same before and after processing ... 1 point.
It is worse after processing ... 0 points.

  And the score of all the evaluators was totaled and the touch of the hair processed with each hair cosmetics was evaluated.

  As shown in Table 2, the hair cosmetics of Examples 1 to 3 having the proper component composition were recognized in both cases of oily component precipitation at 45 ° C. and −2 ° C. in stability evaluation over time. In addition, the oily component is stably dissolved, and the feel of the hair after treatment is also good.

  On the other hand, in the hair cosmetics of Comparative Examples 1 to 4 in which a surfactant other than the nonionic surfactant was blended, the oily component was precipitated at the time of stability evaluation at −2 ° C. The stability of the dissolved state of is inferior. Moreover, as can be seen from the results of treating the hair with the hair cosmetics of Comparative Examples 3 and 4, depending on the selection of the surfactant, not only the stability of the dissolved state of the oily component but also the effect of improving the feel of the hair is reduced. .

Claims (6)

  A hair cosmetic comprising a polyalkylene glycol, an ester-type nonionic surfactant that is liquid at normal temperature, and an oily component that is liquid at normal temperature, and a water content of 1% by mass or less.   The hair cosmetic composition according to claim 1, wherein the average degree of polymerization of the polyalkylene glycol is 4 to 12.   The hair cosmetic composition according to claim 1 or 2, wherein the oily component that is liquid at room temperature is an acylamino acid ester.   The hair cosmetic composition according to any one of claims 1 to 3, wherein the blending amount of the polyalkylene glycol is 44 mass% or more.   The hair cosmetic composition according to any one of claims 1 to 4, wherein the amount of the ester-type nonionic surfactant that is liquid at normal temperature is 0.01 to 0.5 mass%.   The hair cosmetic composition according to any one of claims 1 to 5, wherein a blending amount of the oily component liquid at normal temperature is 0.0001 to 0.1 mass%.