Two-component hair care product, process for producing a cosmetic product and use of the two-component hair care product

Abstract

Two-component hair care product comprising separately an anhydrous carrier as a first component and an aqueous carrier as a second component, characterized in that the anhydrous carrier a) a branched or unbranched alkane having a chain length of C10 to C30, in an amount of 20 to 90 wt.%, based on the total weight of the first component, b) a branched or unbranched fatty alcohol having a chain length of C8 to C22, in an amount of 5 to 40% by weight, based on the total weight of the first component, (c) an organic acid or an alkalizing agent and d) a pH-sensitive color indicator which shows a color change in the range between pH 3 and 6, in an amount of 0.0001 to 0.05% by weight, based on the total weight of the first component, and the aqueous carrier comprises a cationic surfactant comprising an organic radical with a chain length of C12 to C30, in an amount of 0.5 to 20% by weight, based on the total weight of the second component, wherein the weight ratio of the first component to the second component is 10 to 1 to 1 to 10, further characterized in that the first component and the second component are at a temperature of 20 °C and a pressure of 10 5 Pa are liquid.

Description

[0001] The present invention relates to the field of producing hair care products in cosmetics. In particular, the present invention relates to a two-component hair care product comprising two separately provided components with different ingredients.

[0002] Cosmetic products for cleansing and / or caring for hair, which, with the exception of some coloring agents, usually consist of a single, ready-to-use component, have been around for a long time and are regularly improved or adapted to the changing needs of consumers. For example, consumers expect a modern hair conditioner to, among other things, cleanse, smooth, make hair easy to comb, soft, shiny, and manageable, moisturize, combat dandruff, and add volume. A variety of active ingredients are known that can fulfill one or more of the aforementioned requirements in such a cosmetic product.However, the presence of a large amount of different active ingredients can destabilize a hair cosmetic, which is why it is usually attempted to meet as many of the above-mentioned requirements as possible with a small number of well-tolerated active ingredients.

[0003] A large number of different components can also limit formulation freedom in the development of cosmetic products because components interact with each other or disrupt the structure. For example, substances can disrupt the desired structure of an emulsion, even though the desired structure of the emulsion is associated with a specific beneficial cosmetic effect. Formulation freedom is further limited by the requirement for good biodegradability, regulatory restrictions, etc. Therefore, it is highly desirable to create additional degrees of freedom for cosmetic formulations.

[0004] It's also not insignificant that cosmetics appeal to their users on an emotional level. Cosmetic products whose use is pleasant, interesting, or otherwise associated with positive emotional experiences will, to put it simply, always be preferred to boring products, even if the achievable end result is equivalent to a cosmetic application.

[0005] DE 101 46 350 A1 discloses two-component compositions consisting of two aqueous components that are provided separately and have two different pH values, according to the examples, 3.5 and 9.1, and 3.0 and 10.0, respectively. US 2016 / 206547 A1 discloses hair conditioning compositions that contain at least 3 wt.% of a C8-C30 fatty alcohol, a hydrocarbon-based oil, and a cationic surfactant. According to the example, an aqueous phase is also included. From the Mintel GNPD database, entry number 1522953, a hair conditioning agent is known which contains water, the alkanes isododecane, isohexadecane and hydrogenated polydecene, the fatty alcohols cetearyl alcohol and cetyl alcohol, the cationic surfactants stearamidopropyldimethylamine, behentrimonium chloride, quaternium-91, cetrimonium methosulfate and cetrimonium chloride and the ethers PPG-3 benzyl ether myristate and PPG-1-PEG-9 lauryl glycol ether.From the Mintel GNPD database, entry number 2554085, a hair conditioning agent is known which contains water, the alkane isododecane, the fatty alcohol mixture cetearyl alcohol and the cationic surfactants behentrimonium chloride, stearamidopropyl dimethylamine, cetrimonium chloride and quaternium-95.

[0006] The invention described here was achieved in view of the requirements and desirable properties explained above, and its underlying object is, on the one hand, to provide a cosmetic product, in particular a hair care or hair conditioning product, that is an emulsion that is easy to produce. In particular, the product should make it possible to offer maximum formulation freedom. On the other hand, it is also the underlying object of the invention to provide a cosmetic product, in particular a hair care or hair conditioning product, that offers a reliably achievable sense of success during preparation and application.

[0007] The object is achieved by a first aspect of the invention described here, a two-component hair care product which separately comprises an anhydrous carrier as a first component and an aqueous carrier as a second component, characterized in that the anhydrous carrier comprises a branched or unbranched alkane with a chain length of C10 to C30, preferably from C12 to C24, more preferably from C14 to C20, in an amount of 20 to 90 wt.%, based on the total weight of the first component, furthermore a branched or unbranched fatty alcohol with a chain length of C8 to C22, preferably C10 to C18, more preferably from C12 to C16, in an amount of 5 to 40 wt.%, based on the total weight of the first component, furthermore an organic acid or an alkalizing agent and a pH-sensitive color indicator which shows a color change in the range between pH 3 and 6, in an amount of 0.0001 to 0.05 wt.-%, based on the total weight of the first component, and the aqueous carrier comprises a cationic surfactant comprising an organic radical having a chain length of C12 to C30, preferably C14 to C26, more preferably C16 to C22, in an amount of 0.5 to 20 wt.%, based on the total weight of the second component, wherein the weight ratio of the first component to the second component is 10:1 to 1:10, further characterized in that the first component and the second component are at a temperature of 20 °C and a pressure of 10. 5 Pa are liquid.

[0008] At this point it should be noted that “anhydrous” in the sense of the present invention means that 0 to 5 wt.% water, preferably 0 to 3 wt.%, particularly preferably 0 to 1 wt.%, extraordinarily preferably 0 - 0.5 wt.% water are contained, in each case based on the total weight of the component designated as “anhydrous”.

[0009] The above-described configuration significantly increases the degree of freedom in formulating a cosmetic product. For example, ingredients that cannot normally be used together because this would impair storage stability can still be used in a product in which they are spatially separated as constituents of different components until shortly before use. Or, different conditions can be created in the different components, e.g., with regard to pH or other relevant parameters. This freedom to vary the pH of the components is actually utilized in the present invention.In this way, various ingredients can be stored in the component at a pH value that is more favorable for their stability. Furthermore, by blending the components, a pH value favorable for hair care can be achieved in the resulting mixture. The storage stability of certain ingredients is significantly increased by this procedure. For example, substances sensitive to hydrolysis in acidic conditions can be added to a basic component. This makes the use of many substances in storable cosmetic products possible in the first place.

[0010] Apart from the above, the first aspect offers a tangible sense of achievement when preparing the cosmetic product for application, as the included color indicator is selected to indicate the achievement of a desired mixing ratio through a color change, and the uniformity of the color change indicates the uniformity of the mixing. This gives the user visual confirmation that they have mixed the product optimally and can be seen as a positive "do-it-yourself" sense of achievement.

[0011] In the two-component hair care product, the pH-sensitive color indicator shows a color change in the range between 3 and 6, preferably between pH 3.5 and 5.5, more preferably between pH 4 and 5. Preferably, the pH-sensitive color indicator is selected from the group consisting of methyl orange, methyl red, resorcinol yellow, quinaldine red, Congo red, bromocresol green and bromothymol blue.

[0012] Preferably, in the two-component hair care product according to the invention, the color indicator, depending on its changeover range, is inserted into the first component in such a way that a desired mixing ratio of the first component and the second component, if maintained and the first component and the second component are mixed evenly, results in a pH value in the resulting mixture in a range of 3 to 6.5, preferably 4 to 6, particularly preferably 4.5 to 5.5, is indicated by the color change. Maintaining these pH value ranges leads to achieving the best care effect on the hair. By selecting the indicator in this way and using it in the appropriate phase, it is ensured that the desired pH value is achieved in the ready-to-use mixture and that the same is thoroughly mixed reliably and reproducibly.

[0013] In the two-component hair care product, the second component preferably has a pH value of 2 to 5, preferably 2.5 to 4.5, more preferably 3 to 4. The advantage of this is that stable ingredients that are unstable in other pH ranges can be used at this pH value, while nevertheless, due to the mixing with the other component, the hair is not exposed to a pH value that is unfavorable for hair care.

[0014] In the two-component hair care product, the alkalizing agent is preferably an alkanolamine, which is preferably selected from the group consisting of monoethanolamine, diethanolamine, triethanolamine and aminomethylpropanol.

[0015] In the two-component hair care product, the acid is preferably an alkylsulfonic acid or a carboxylic acid, wherein the acid is preferably selected from the group consisting of octanoic acid, decanoic acid, methylsulfonic acid and ethylsulfonic acid.

[0016] The alkalizing agents and acids described above have proven particularly suitable for the purposes of the present invention. Their use achieves the technically advantageous effects described for the invention to a greater extent.

[0017] According to a preferred embodiment, the two-component hair care product contains as component c) an ether which is an alkoxylated fatty alcohol, which preferably has the formula HO(C3H6O) n C m H 2m+1 in which n is from 1 to 6, preferably from 2 to 4, and m is from 5 to 14, more preferably 6 to 12, most preferably 8 to 10. In particular, the ethers used according to the invention are particularly suitable for solving the problem underlying the invention.

[0018] As a particularly preferred ether, the anhydrous carrier contains PPG-3-Caprylyl Ether (INCI), a caprylyl ether containing a tripropylene glycol group.

[0019] According to a further preferred embodiment, the two-component hair care product contains, as component c), an alkyl ester, which is a fatty acid ester. More preferably, the fatty acid ester is a glycerol triester containing identical or unidentical acyl groups. Even more preferably, the acyl groups each contain 5 to 11, preferably 7 to 9, carbon atoms.

[0020] A particularly preferred glycerol triester is Capric / Caprylic Triglyceride (INCI).

[0021] In the context of the invention described here, these components produce a stable foam and also have other properties that are ideally suited for hair care, so that their use in the two-component hair care product according to the invention is technically advantageous.

[0022] Furthermore, it is according to the invention that the two-component hair care product contains in the first component the branched or unbranched alkane in an amount of 20 to 90 wt.%, preferably 30 to 80 wt.%, more preferably 40 to 70 wt.%, most preferably 45 to 65 wt.%, based on the total weight of the first component, the fatty alcohol in an amount of 5 to 40 wt.%, preferably 10 to 37 wt.%, more preferably 15 to 34 wt.%, most preferably 20 to 30 wt.%, based on the total weight of the first component, and the pH-sensitive color indicator in an amount of 0.0001 to 0.1 wt.%, preferably 0.0005 to 0.05 wt.%, more preferably 0.001 to 0.01 wt.%, based on the total weight of the first component, and optionally the non-ionic surfactant in an amount of 1 to 20 wt.%, preferably from 2 to 15 wt.%, more preferably from 3 to 10 wt.-%, based on the total weight of the first component, and characterized in that the two-component hair care product contains in the second component water and, based on the total weight of the second component, 0.5 to 20 wt.%, preferably 1.5 to 15 wt.%, more preferably 2.5 to 10 wt.% cationic surfactant comprising an organic radical with a chain length of C12 to C30, preferably C14 to C26, more preferably from C16 to C22.

[0023] If the aforementioned concentration ranges are adhered to, the technically advantageous effect described for the invention can be achieved to a greater extent. As exemplified for the color indicator, one advantage is that in these concentration ranges, a clearly visible color, a clearly visible color change, and good visibility of the mixing quality can be achieved without reaching a disturbingly high concentration of the color indicator.

[0024] In the two-component hair care product, according to the invention, the volume ratio of the first component to the second component is 10 to 1 to 1 to 10, preferably 5 to 1 to 1 to 5, more preferably 2 to 1 to 1 to 2. This is advantageous because in this way, excessively small amounts, which would be difficult to measure with good accuracy, do not have to be dosed during preparation for use.

[0025] In the two-component hair care product of the present invention, the first component and the second component are at a temperature of 20 °C and a pressure of 10 5 Pa liquid. This allows the components to be easily mixed under typical living room temperature and pressure conditions.

[0026] Apart from the above, it is preferred that the two-component hair care product according to the invention not contain an oxidizing agent, a direct dye, or an oxidation dye precursor for coloring keratin fibers, especially human hair. One advantage of this is its ease of use, without the need to take the necessary measures for hair dyes to prevent staining of skin, clothing, or bathroom utensils.

[0027] Apart from the first aspect described above, the object underlying the invention is achieved by a second aspect, a process for producing a cosmetic agent in which the first component and the second component are mixed together. Features described for the first aspect can also be found in the second aspect, unless there is a specific impediment. The technically advantageous effects of the respective features are as described above for the first aspect, and such a process yields previously uncommercially viable hair care formulations that can achieve cleaning and / or care performance superior to conventional hair care products.

[0028] An advantageous development of the method can be achieved by ensuring that the pH of the cosmetic product is between 3 and 6.5, preferably between 4 and 6, and more preferably between 4.5 and 5.5. This range is optimal for hair care. Accordingly, care results of previously unattainable quality can be achieved, since non-storage-stable compositions can be produced only shortly before use and then applied in the optimal pH range.

[0029] Apart from the aspects described above, the object underlying the invention is achieved by a third aspect, a use of the two-component hair care product for caring for, preferably conditioning, keratin fibers, in particular human hair. Previously described features can also be found in this aspect as long as there is no specific impediment. The realization of the subject matter of the third aspect leads to superior hair care results. One particular advantage is that the hair cared for with the products according to the invention can benefit from superior care performance and exhibits desirable properties, such as softness, brilliance, and absence of frizz, to a particularly high degree.

[0030] A further subject of the present invention is a hair treatment method in which a two-component hair care product according to the invention or preferred according to the invention is applied to damp or dry hair and is either left on the hair until the next hair wash or is optionally rinsed off the hair after a contact time of 1 second to 30 minutes.

[0031] The two-component hair care product of the present invention can, for example, be designed as follows, wherein all percentages are to be understood as weight percent, based on the total weight of the respective component and "ad 100" means that the weight percent missing to 100 weight percent is supplemented with the corresponding substance. Anhydrous Phase Example 1 Isododecan ad 100 Cetearylalkohol 9,00 Myristylalkohol 15,00 Caprylic / Capric Triglycerid (INCI) 5,00 Dimethicone 5cst (INCI) 30,00 Methylrot 0,005 Monoethanolamin 0,005 Parfum 1,40 Anhydrous Phase Example 2 Isododecan ad 100 Cetearylalkohol 9,00 Myristylalkohol 15,00 Caprylic / Capric Triglycerid (INCI) 5,00 Dimethicone 5cst (INCI) 30,00 Bromthymolblau 0,005 Monoethanolamin 0,005 Parfum 1,40 Aqueous phase Wasser ad 100 Natriumbenzoat 0,50 Milchsäure 0,90 Stearamidopropyl Dimethylamine (INCI) 0,80 Cetrimonium Chloride (INCI) 1,50

[0032] The anhydrous phase according to Example 1 as the first component was mixed with the aqueous phase as the second component in a weight ratio of the first component to the second component of 10:1 to 1:10, preferably 5:1 to 1:5, more preferably 2:1 to 1:2. Vigorous shaking by hand was sufficient for this purpose.

[0033] The anhydrous phase according to Example 2 as the first component was mixed with the aqueous phase as the second component in a weight ratio of the first component to the second component of 10:1 to 1:10, preferably 5:1 to 1:5, more preferably 2:1 to 1:2. Vigorous shaking by hand was sufficient for this purpose.

[0034] The two resulting hair care products were applied to dry or damp hair and rinsed with lukewarm water after a contact time of 5 minutes at 20°C. The treated hair was soft and had a beautiful shine.

[0035] The subsequently dried hair was smooth and not frizzy (absence of frizz).

[0036] In a variation of the hair treatment method according to the invention, the resulting hair care products were sprayed onto dry hair using a pump sprayer. The treated hair was soft, had a beautiful shine, and was free of frizz.

Claims

[1] Two-component hair care product comprising separately an anhydrous carrier as a first component and an aqueous carrier as a second component, characterized by , that the anhydrous carrier a) a branched or unbranched alkane having a chain length of C10 to C30, in an amount of 20 to 90 wt.%, based on the total weight of the first component, b) a branched or unbranched fatty alcohol having a chain length of C8 to C22, in an amount of 5 to 40% by weight, based on the total weight of the first component, (c) an organic acid or an alkalizing agent and d) a pH-sensitive color indicator which shows a color change in the range between pH 3 and 6, in an amount of 0.0001 to 0.05% by weight, based on the total weight of the first component, and the aqueous carrier comprises a cationic surfactant comprising an organic radical with a chain length of C12 to C30, in an amount of 0.5 to 20% by weight, based on the total weight of the second component, wherein the weight ratio of the first component to the second component is 10 to 1 to 1 to 10, furthermore characterized by that the first component and the second component are at a temperature of 20 °C and a pressure of 10 5 Pa are liquid. [2] Two-component hair care product according to claim 1, characterized by that the pH-sensitive color indicator is selected from the group consisting of methyl orange, methyl red, resorcinol yellow, quinaldine red, Congo red, bromocresol green and bromothymol blue. [3] Two-component hair care product according to claim 1 or claim 2, characterized by that the second component has a pH value of 2 to 5. [4] Two-component hair care product according to one of the preceding claims, characterized by that the alkalizing agent is an alkanolamine, which is preferably selected from the group consisting of monoethanolamine, diethanolamine, triethanolamine and aminomethylpropanol, or characterized by that the acid is an alkylsulfonic acid or a carboxylic acid, wherein the acid is preferably selected from the group consisting of octanoic acid, decanoic acid, methylsulfonic acid and ethylsulfonic acid. [5] Two-component hair care product according to one of the preceding claims, characterized by that the cationic surfactant is a trimethylalkylammonium halide, an N-[3-(dimethylamino)propyl]alkanamide or an esterquat. [6] Two-component hair care product according to one of the preceding claims, characterized bythat the two-component hair care product further contains as a component e) in the aqueous carrier an alkyl ester or an ether, wherein the total number of carbon atoms of the alkyl ester or the ether is from 6 to 30. [7] Two-component hair care product according to claim 6, characterized by that component e) is an ether which is an alkoxylated fatty alcohol. [8] Two-component hair care product according to claim 6 or claim 7, characterized by that the alkoxylated fatty alcohol is PPG-3 Caprylyl Ether (INCI). [9] Two-component hair care product according to one of the preceding claims, characterized by that the alkane is a branched C20 to C30 alkane or a linear C8 to C14 alkane. [10] Two-component hair care product according to one of the preceding claims, characterized bythat the two-component hair care product contains in the first component the branched or unbranched alkane in an amount of 30 to 80 wt.%, based on the total weight of the first component, the fatty alcohol in an amount of 10 to 37 wt.%, based on the total weight of the first component, and the pH-sensitive color indicator in an amount of 0.0001 to 0.05 wt.%, based on the total weight of the first component, and characterized by that the two-component hair care product contains water in the second component and, based on the total weight of the second component, 1.5 to 15 wt.% of cationic surfactant. [11] Two-component hair care product according to one of the preceding claims, characterized by that the weight ratio of the first component to the second component is 5 to 1 to 1 to 5. [12] Two-component hair care product according to one of the preceding claims, characterized bythat the resulting mixture of the first component and the second component has a pH value in a range of 3 to 6.

5. [13] Process for the preparation of a cosmetic product, characterized by that the first component and the second component according to one of claims 1 to 12 are mixed together. [14] Method according to claim 13, characterized by that the pH value of the cosmetic product is 3 to 6.

5. [15] Use of the two-component hair care product according to any one of claims 1 to 12 for the care of keratin fibers.