Patent Application
20230398045
Personal hygiene plays an important role in the satisfaction and well-being of people. There are several reasons for this. On the one hand, there is a widespread social consensus that a well-groomed appearance makes interaction with one another more pleasant and can also be seen as a sign of respect towards fellow human beings. On the other hand, many people also feel more comfortable for intrinsic reasons when they are well-groomed. However, even the care itself is for many a pleasant relaxing and perhaps somewhat meditative experience associated with pleasant feelings. In this respect, personal hygiene also has considerable emotional and playful aspects.
Hair care often plays a central role in the overall body care. Healthy shiny, but not greasy hair with resilience and volume is widely seen as a special sign of beauty but also health. At the same time, however, the widespread modern lifestyle can significantly affect long hair in particular. Frequent washing and blow-drying can leave traces as well as hard water, dry air, styling products or tints and dyes, which then results in a special need for care and/or repair of the hair.
Significant care and repair effects are achieved with hair masks or hair treatments, which can be applied to wet hair after cleaning with water and shampoo but before conditioning. Such products are usually emulsions that contain nourishing ingredients that can penetrate the hair structure to some extent, but this requires some exposure time.
Maintaining the correct exposure time can be challenging or uncomfortable for users and can detract from the positive experience. Too short an exposure time results in only a slight conditioning effect, while too long an exposure time can lead to various undesirable effects, depending on the product, from greasy-looking hair to hair breakage. In addition, if the exposure time is waited for in the shower, for example, this can result in higher water consumption, which, due to the treatment of groundwater or surface water to drinking water, is associated with technical effort and energy consumption and, of course, also with a cost burden for the consumer. In areas where water resources are scarce, increased water use may also be less desirable for other reasons.
Apart from this, emulsion-based products have for some time been increasingly perceived as somewhat old-fashioned, and a steadily growing group of users wants products that are clear, transparent, thin-bodied, and possibly even colorless. These are rated as light, modern, and little or no discomfort, and address the emotional playful aspect of personal hygiene mentioned at the beginning of this article.
The prevailing opinion in the technical field, however, is that such a product appearance and the strong care properties required for a hair mask cannot be reconciled, especially if even a short contact time is to be sufficient to achieve them, or even if it is to be achieved that no separate contact time is to be observed at all and that the contact time alone, which occurs when a product is distributed in the hair, is to be sufficient to achieve the intended care effect.
Nevertheless, embodiments herein address the task of developing a cosmetic product with a transparent hair mask that offers superior care and repair effects even with only a very short or even no separate application time.
In one embodiment, a hair care product is provided and includes: a single-phase hair care composition emulsifiable with water before use, and a measuring vessel for measuring the hair care composition and/or the water for an application, wherein the measuring vessel is provided with a scale or marking or is correspondingly limited in size, which enables measuring the hair care composition and/or the water for the application, or instructions that enable a person to measure the desired quantities.
In another embodiment, a method is provided and includes the steps: measuring out a single-phase hair care composition emulsifiable with water prior to application and a corresponding amount of water for one application, wherein the hair care composition includes: at least one monohydric alcohol, at least one polyhydric alcohol, at least one long-chain fatty alcohol, at least one quaternary ammonium salt, at least one emollient, and at least one medium-chain triglyceride; if the hair care composition and the water have not already been brought together in a vessel during the measuring, bringing them together in a vessel; sealing the vessel; and shaking the vessel so that an emulsion forms, and, optionally, one or more of the following steps: bringing the hair care composition emulsified with water into contact with wet or damp hair of a human being or animal, working in and/or massaging to intensify the contact of the hair care composition emulsified with water with the hair, and waiting for a certain exposure time in the range of 1 second to 20 minutes.
The following detailed description is merely exemplary in nature and is not intended to limit the disclosure or the application and uses of the subject matter as described herein. Furthermore, there is no intention to be bound by any theory presented in the preceding background or the following detailed description.
This task is solved by the cosmetic products described below with corresponding formulations, methods for their use and uses, which were able to provide a clear liquid hair mask with consistency transformation and immediate action during application. The term “consistency transformation” should be understood to mean that the hair mask changes its consistency significantly when brought into contact and mixed with water, as described in more detail below. The term “immediate effect” is to be understood as meaning that no or only an insignificant exposure time must be observed in order to obtain the desirable effect.
More specifically, the present disclosure provides a hair care product comprising: a single-phase hair care composition emulsifiable with water prior to use; and a measuring vessel for measuring the hair care composition and/or water for use, which is a vessel provided with a scale or mark, or correspondingly limited in size, that enables the hair care composition and/or water for use to be measured, or instructions that enable a person to measure the desired amounts.
Such a hair care product can be manufactured, packaged and transported in a very resource-efficient way, since it does not yet contain any water, or at least not much. It offers an enriching experience when used, as something, namely the emulsion, is itself prepared and it is also appealing on a sensual and/or emotional level, as the freshly prepared emulsion has a particularly pleasant fine texture and is also somewhat warm due to the process of emulsification.
Further provided by the present disclosure is a hair care product wherein the hair care composition, comprises: at least one monohydric alcohol, at least one polyhydric alcohol, at least one long chain fatty alcohol, at least one quaternary ammonium salt, at least one emollient, and at least one medium chain triglyceride.
With such a formulation, it is possible to keep the conditioning ingredients in solution, creating a clear transparent product. A drying effect occasionally attributed to alcohols is not observed, as only an extremely short exposure time is required, which is presumably due to the fact that the alcohols are also helpful for rapid penetration of the conditioning substances into the hair structure. Another very positive effect was noted. Due to the fact that emulsification of the mask takes place only on wet hair, a very fine creamy foamy consistency and a slight warming is created, which was consistently rated very positively by test persons.
Thus, because the hair care compositions contain essential ingredients as a solution rather than, for example, as an emulsion or suspension, they can be clear and transparent, unlike conventional emulsion-based products, and it is preferred that they be clear and transparent. This should be understood here to mean that something described as “clear and transparent,” such as hair care compositions, essentially does not scatter light in the range usually visible to humans.
In addition, a comparatively low viscosity of hair care compositions compared to conventional products is a consequence of the formulation just described. In addition to practical advantages, for example the fact that such a hair care composition can be easily removed or emptied from a package with little residue, there is again the perceptual and emotional aspect. Low viscosity products are perceived as light and modern. Preferably, the viscosity of the hair care compositions as contemplated herein is at most 500 mPas, preferably at most 350 mPas and in particular preferably at most 200 mPas when measured with a rotational viscometer, model VT 550, from Haake, as detailed in the enclosed instructions and briefly described below. For viscosity measurement, a sample is measured in the gap between two coaxial cylinders. The inner cylinder (rotor) is rotated against the outer, fixed cylinder (stator), creating laminar flow in the fluid. When a certain rotational speed is applied, a defined shear rate is generated in the gap between the cylinders, the torque is measured at the rotor and converted into shear stress.
Furthermore, the present disclosure provides a cosmetic product comprising a hair care composition as described above, wherein the at least one monohydric alcohol is ethanol, propanol, butanol or a mixture thereof, preferably ethanol, propanol or a mixture thereof, and more preferably ethanol, and/or is present in a concentration of from 13 wt. % to 40 wt. %, preferably from 15 wt. % to 34 wt. %, and more preferably from 20 wt. % to 30 wt. %, each based on the total weight of the hair care composition therein.
These alcohols have good properties for dissolving the skin care ingredients, are not absorbed by the skin in significant quantities during the short exposure time and are easy to produce from renewable raw materials. In the context of the formulations disclosed herein, the concentration ranges described have been shown to be particularly suitable for producing the desired effect described to the extent intended without producing significant undesirable effects or unduly restricting the freedom of formulation as far as the other ingredients are concerned.
Furthermore, the present disclosure provides a cosmetic product comprising a hair care composition as described above, wherein the at least one polyhydric alcohol is a C3 or C4 alcohol or a mixture thereof, preferably glycerol, propanediol or a mixture thereof and more preferably the mixture of glycerol and propanediol and/or is present in a concentration of from 20 wt.-% to 45 wt. %, preferably 23 wt. % to 42 wt. % and more preferably 25 wt. % to 40 wt. %, each based on the total weight of the hair care composition.
These polyhydric alcohols serve as humectants, among other things. Their goal is to provide skin and hair with optimal moisture. They keep the skin healthy and elastic, prevent the premature formation of wrinkles and strengthen the natural skin barrier. After all, this barrier function is the most important task of the skin, it protects the organism from drying out and from harmful external influences. However, the humectants also directly improve the suppleness of skin and hair. In the context of the formulations disclosed herein, the concentration ranges described have been shown to be particularly suitable for producing the desired effect described to the extent intended without producing significant undesirable effects or unduly restricting the freedom of formulation as far as the other ingredients are concerned.
Furthermore, the present disclosure provides a cosmetic product with a hair care composition as described above, wherein the at least one long-chain fatty alcohol is a C8 to C16 fatty alcohol or a mixture thereof, preferably myristyl alcohol, lauryl alcohol, cetyl alcohol or a mixture thereof and thereof in particular is preferably a mixture of myristyl alcohol, lauryl alcohol and cetyl alcohol and/or in a concentration of 10 wt. % to 35 wt. %, preferably 13 wt. % to 32 wt. % and more preferably 15 wt. % to 30 wt. %, each based on the total weight of the hair care composition.
These fatty alcohols are refatting skin care ingredients. Preceding a hair treatment, hair is usually cleaned by shampooing, which inevitably leads to a certain degree of degreasing. This is not beneficial for beautiful hair shine, smoothness and long-term hair health in general, so there are advantages to using a refatting component in the hair care compositions of the present disclosure. The fatty alcohols described have proven to be particularly beneficial. They achieve a good level of refatting and make the hair look healthy, but not greasy. In the context of the formulations disclosed herein, the concentration ranges described have been shown to be particularly suitable for producing the desired effect described to the extent intended without producing significant undesirable effects or unduly restricting the freedom of formulation as far as the other ingredients are concerned.
Furthermore, the present disclosure provides a cosmetic product comprising a hair care composition as described above, wherein the at least one quaternary ammonium salt is an alkyltrimethylammonium salt, preferably a C14 to C18 alkyltrimethylammonium salt and more preferably hexadecyltrimethylammonium chloride, also known as cetrimonium chloride, and/or is present in a concentration of 0.5 wt.-% to 5 wt. %, preferably 0.8 wt. % to 4.4 wt. % and more preferably 1 wt. % to 4 wt. %, each based on the total weight of the hair care composition.
Such a quaternary ammonium salt reseals the opened cuticle after shampooing, making the hair less sensitive again. It then loses no moisture, is protected from drying out and achieves a new shine and suppleness without perceiving a weighed-down feeling. In the context of the formulations disclosed herein, the concentration ranges described have been shown to be particularly suitable for producing the desired effect described to the extent intended without producing significant undesirable effects or unduly restricting the freedom of formulation as far as the other ingredients are concerned.
The quaternary ammonium salts mentioned above have proved particularly suitable, but in principle other cationic surface-active substances suitable for use on the human body are also suitable. These are exemplified by at least one water-solubilizing, cationic group, such as a quaternary ammonium group, or by at least one water-solubilizing, cationizable group, such as an amine group and furthermore at least one lipophilic alkyl group with about 6 to 30 C atoms, or also by at least one imidazole group or at least one imidazylalkyl group.
Suitable are, for example, quaternary ammonium compounds having at least one C8-C24 alkyl radical, esterquats and amidoamines each having at least one C8-C24 acyl radical, and mixtures thereof. Preferred quaternary ammonium compounds having at least one C8-C24 alkyl radical are ammonium halides, in particular chlorides, and ammonium alkyl sulfates, such as methosulfates or ethosulfates, such as C8-C24 alkyltrimethylammonium chlorides, C8-C24 dialkyldimethylammonium chlorides and C8-C24 trialkylmethylammonium chlorides, e.g. cetyltrimethylammonium chloride, stearyltrimethylammonium chloride, distearyldimethylammonium chloride, lauryldimethylammonium chloride, lauryldimethylbenzylammonium chloride and tricetylmethylammonium chloride, as well as the imidazolium compounds known under the INCI designations quaternium-27, quaternium-83, quaternium-87 and quaternium-91. The alkyl chains of the surfactants mentioned above preferably have 8 to 24 carbon atoms. Esterquats are cationic surfactants that contain both at least one ester function and at least one quaternary ammonium group as a structural element and furthermore at least one C8-C24 alkyl radical or C8-C24 acyl radical. Preferred esterquats are quaternized ester salts of fatty acids with triethanolamine, quaternized ester salts of fatty acids with diethanolalkylamines and quaternized ester salts of fatty acids with 1.2-dihydroxypropyl dialkylamines. Such products are sold under the trademarks Stepantex®, Dehyquart® and Armocare®. N,N-bis(2-palmitoyloxyethyl)dimethylammonium chloride, distearoylethyl dimonium methosulfates and distearoylethyl hydroxyethylmonium methosulfates are preferred examples of such esterquats.
Furthermore, the present disclosure provides a cosmetic product comprising a hair care composition as described above, wherein the at least one emollient is a dialkyl carbonate and preferably dicaprylyl carbonate and/or is present in a concentration of 0.5 wt. % to 15 wt. %, preferably 2 wt. % to 13 wt. % and more preferably 3 wt. % to 12 wt. %, each based on the total weight of the hair care composition therein.
Human hair, as mentioned at the beginning, is exposed to many strains. That is why it is especially important to protect it and create a special, gentle and at the same time beautifying layer. Such a layer does not allow unwanted substances from the environment to penetrate under the cuticle of the hair and the hair is protected from excessive moisture loss. In this way, the hair retains adequate moisture. Emollients form such a protective shield of the hair. These are beneficial regardless of the structure, thickness, damage to the hair or color of the strands and also provide protection from the sun, UV radiation, heat of the hair dryer and hair straightener. Too much can make the hair heavy, causing the hair to look unaesthetic. With too little emollients, the hair dries out, electrifies, loses elasticity and becomes stiff. The concentration ranges described above have proven to be particularly suitable in the context of the formulations disclosed herein for producing the desired effect described to the extent intended without producing significant undesirable effects or unduly restricting the freedom of formulation with respect to the other ingredients.
Silicones are also widely used as emollients in generic hair care products. This is often considered to be largely without alternative for achieving the desired care and repair effect. The hair care compositions as contemplated herein achieve outstanding care and repair effects even without silicones. However, they are fully compatible with silicones and may contain silicones if desired in certain cases.
In general, at least the hair care compositions as contemplated herein make it possible to dispense with organosilicon compounds, in particular silicones, in these very hair care compositions. In the context of the present disclosure, “silicone-free” or “free of silicones” is understood to mean that what is described as “silicone-free” or “free of silicones”, for example, the hair care compositions described herein, is free of organosilicon compounds, in particular free of silicones, trisiloxanes and silicone oils.
Furthermore, the present disclosure provides a cosmetic product with a hair care composition as described above, wherein the at least one medium-chain triglyceride is a C6 to C12 fatty acid-based medium-chain triglyceride, preferably a C8 to C10 fatty acid-based medium-chain triglyceride and particularly preferably a medium-chain triglyceride known by the INCI name caprylic/capric triglyceride and/or in a concentration of 0.5 wt. % to 15 wt. %, preferably 2 wt. % to 13 wt. % and particularly preferably 3 wt. % to 12 wt. %, in each case based on the total weight of the hair care composition.
These medium-chain triglycerides have a suitable molecular structure to quickly penetrate the scalp and hair follicles and then efficiently improve nutrient delivery there. Medium-chain triglycerides also act as natural antioxidants, protecting hair follicles from free radical damage, counteracting dandruff and keeping the scalp healthy. In the context of the formulations disclosed herein, the concentration ranges described above have been found to be particularly suitable for producing the desired effect described to the extent intended without producing significant undesirable effects or unduly restricting the freedom of formulation as far as the other ingredients are concerned.
Furthermore, the present disclosure provides a cosmetic product comprising a hair care composition as previously described, in which further water is present therein in a concentration of less than 20 wt. %, preferably less than 15 wt. %, and more preferably less than wt. %, in each case based on the total weight of the hair care composition.
There are advantages, for formulability, to accepting a certain water content, since certain commercially available precursors usually contain certain amounts of water, but also advantages for spread ability and action on the hair, since the volume is increased somewhat and the concentrations of active ingredients do not become too high. If the water content is kept low enough so as not to impair the desired effect that emulsification only occurs on the hair, then a corresponding procedure is practically without disadvantages. In the context of the formulations disclosed herein, the concentration ranges described above have been found to be particularly suitable for producing the desired effect described to the extent intended without producing significant undesirable effects or unduly restricting the freedom of formulation as far as the other ingredients are concerned.
Method comprising the steps: Measuring out a single-phase hair care composition as defined in any one of the preceding claims which is emulsifiable with water prior to use and/or a corresponding amount of water for use, unless the hair care composition and the water have already been brought together in a vessel during the measuring out, bringing them together in a vessel, sealing the vessel, and shaking the vessel so that an emulsion forms, and, optionally, one or more of the following steps:
Through such a process, the previously described advantages are actually realized and can be experienced. In particular, it should be emphasized that this offers a new experience in the form of emulsification on the hair with the pleasant sensations already described, and that the only very short application time required is usually already automatic and hardly needs to be observed separately, which makes the application simple, pleasant and less prone to errors.
Further provided by the present disclosure is a use of a single-phase pre-application water emulsifiable hair care composition as defined in any of the preceding claims for emulsifying with water and then caring for preferably wet or damp hair of a human or animal, in particular long scalp hair of a human, with the resulting emulsion.
Through such use, the previously described advantages are actually realized and experienced. In particular, it should be emphasized that this offers a new experience in the form of emulsification on the hair with the pleasant sensations already described, and that the only very short application time required is usually already automatic and hardly needs to be observed separately, which makes the application simple, pleasant and less prone to errors.
Other ingredients may be present in the hair care compositions of the present disclosure, some of which are described below. If there are overlaps with the ingredients discussed in detail above, the ingredients discussed later are also included, unless this is explicitly described otherwise at the respective point.
In a preferred embodiment, hair care compositions as contemplated herein contain at least one hair-conditioning active ingredient selected from the group of
Suitable cationic polymers of natural origin within the meaning of the present disclosure are understood to mean, for example:
Quaternized cellulose polymers, hydrophobically modified cationic cellulose derivatives and/or cationic guar derivatives are preferred.
Particularly preferred are the cationic polymers known under the INCI designations guar hydroxypropyltrimonium chloride, polyquaternium-10, polyquaternium-67; guar hydroxypropyltrimonium chloride is particularly preferred.
The hair care compositions as contemplated herein may contain cationic polymers—preferably guar hydroxypropyltrimonium chloride—preferably in a proportion by weight of 0.01 to 2 wt. %, more preferably 0.02 to 1.5 wt. % and in particular 0.03 to 1 wt. % of the total weight of the hair care composition.
Suitable humectants within the meaning of the present disclosure are preferably fiber structure-improving active ingredients such as polyols (i.e., physiologically compatible polyalcohols or polyhydroxyl compounds) with 2 to 20 carbon atoms and at least two hydroxyl groups. Typical examples are straight-chain, branched or cyclic alkanols with 2 to 10, preferably with 2 to 6 carbon atoms, such as glycerol, 1,2-propanediol and/or digylcerol, glycols such as polyethylene glycols and/or polypropylene glycols, and sugar alcohols or sugar derivatives such as fructose, glucose, lactose, galactose, sucrose, sorbitol, mannitol, etc. Glycerol is preferred.
The concentrations in which essential representatives of these humectants are present in the hair care compositions as contemplated herein have already been addressed. If additional humectants are present from those mentioned here, for which concentrations have not yet been mentioned, these are present in addition to those previously thematized, preferably in a proportion by weight of 0.05 to 5 wt. %, more preferably 0.1 to 4 wt. % and in particular 0.25 to 3 wt. % of the total weight of the hair care composition.
For the purposes of the present disclosure, “natural” oils are preferably understood to mean a vegetable oil, and more preferably a cold-pressed vegetable oil.
“Cold-pressed oil” means an oil obtained by cold pressing and/or cold extraction of the respective plant (or part of the plant) at a temperature of 40° C. or less, preferably 35° C. or less, and more preferably 30° C. or less.
Preferred oils that can be obtained by cold pressing or cold extraction and are suitable for use in the compositions as contemplated herein are triglycerides and mixtures of triglycerides such as coconut oil, (sweet) almond oil, walnut oil, peach kernel oil, apricot kernel oil, avocado oil, tea tree oil, soybean oil, sesame oil, Sunflower oil, Tsubaki oil, Evening primrose oil, Rice bran oil, Palm kernel oil, Mango kernel oil, Meadow foam oil, Safflower oil, Macadamia nut oil, Grape seed oil, Amaranth seed oil, Argan oil, bamboo oil, olive oil, wheat germ oil, pumpkin seed oil, mallow oil, hazelnut oil, safflower oil, canola oil, sasanqua oil, jojoba oil, rambutan oil, cocoa butter and shea butter are used.
The cold-pressed or cold-extracted oil is preferably present in dispersed form in the hair care compositions of the present disclosure, wherein the droplet size of the dispersed oil is 0.1 to 5 μm, preferably 0.5 to 3 μm.
The hair care compositions as contemplated herein contain natural oils—preferably cold-pressed natural oils—preferably in a proportion by weight of 0.01 to 2 wt. %, more preferably 0.025 to 1.5 wt. % and in particular 0.05 to 1 wt. % of the total weight of the hair care composition.
Trimethylglycine can preferably be used in the hair care compositions as contemplated herein in a proportion by weight of 0.1 to 3 wt. %, more preferably 0.25 to 2.5 wt. % and in particular 0.5 to 2 wt. % of the total weight of the hair care composition.
Suitable “vitamins” are preferably the following vitamins, provitamins and vitamin precursors and their derivatives:
Especially preferred are vitamins, provitamins and vitamin precursors from the groups A, B, E and H. Nicotinamide, biotin, pantolactone and/or panthenol are particularly preferred; nicotinamide and/or panthenol are especially preferred.
The proportion by weight of the vitamin(s), vitamin derivative(s), and/or vitamin precursor(s) in the total weight of the cosmetic hair care compositions as contemplated herein is preferably 0.005 to 2 wt. %, more preferably 0.006 to 1.5 wt. %, particularly preferably 0.008 to 1 wt. % and in particular 0.01 to 0.50 wt. %.
Suitable plant extracts are mainly the extracts of green tea, oak bark, nettle, witch hazel, hops, henna, chamomile, burdock root, horsetail, hawthorn, linden blossom, almond, Aloe vera, spruce needle, horse chestnut, date palm, cinnamon tree, sandalwood, juniper, coconut, mango, apricot, lime, wheat, kiwi, melon, orange, grapefruit, sage, rosemary, birch, mallow, Valerian, Meadowfoam, Quender, Yarrow, Thyme, Melissa, Hauhechel, Coltsfoot, Marshmallow, Meristem, Ginseng, Coffee, Cocoa, Moringa, Ginger Root and Ayurvedic plant extracts such as Aegle marmelos (Bilwa), Cyperus Rotundus (Nagar Motha), Emblica officinalis (Amalki), Morida citrifolia (Ashyuka), Tinospora cordifolia (Guduchi), Santalum album, (Chandana), Crocus sativus (Kumkuma), Cinnamonum zeylanicum and Nelumbo nucifera (Kamala), sweet grasses such as wheat, barley, rye, oats, spelt, corn, the different varieties of millet (panicle millet, Finger millet, foxtail millet as examples), sugarcane, ryegrass, meadow foxtail, smooth oats, bunchgrass, meadow fescue, pipegrass, bamboo, cotton grass, lampbush grasses, Andropogonodeae (Imperata cylindrica also called flame grass or cogon grass), buffalo grass, silt grasses, dogtooth grasses, love grasses, Cymbopogon (lemon grass), Oryzeae (rice), Zizania (wild rice), Beach oats, perennial oats, honey grasses, quaking grasses, meadow grasses, couch grasses, and Echinacea, especially Echinacea angustifolia DC, Echinacea paradoxa (Norton), Echinacea simulata, E. atrorubens, E. tennesseensis, Echinacea strigosa (Mc Gregor), Echinacea laevigata, Echinacea purpurea (L.) Moench and Echinacea pallida (Nutt), all kinds of seaweeds, coral moss and seaweed (such as Macrocystis pyrifera extract), all kinds of vines and pericarp of Litchi chinensis.
Suitable extracts can be obtained from the fruits, seeds, flowers, roots, leaves and/or barks of the above plants or from the whole plants (algae, seaweed).
As contemplated herein, the plant extracts can be used both in pure and diluted form. If they are used in diluted form, they usually contain approx. 2-80% by weight of active substance and as solvent the extracting agent or extracting agent mixture used in their extraction. Suitable extraction agents are usually water and/or alcohols.
The plant extract(s) may be used in the hair care compositions as contemplated herein preferably in total amounts of 0.001 to 1 wt. %, preferably 0.05 to 0.75 wt. % and in particular 0.1 to 0.5 wt. %, the amounts being based on the weight of the hair care composition.
Suitable protein hydrolysates are product mixtures that can be obtained by acidic, basic or enzymatic catalyzed degradation of proteins.
Protein hydrolysates of vegetable, animal and/or marine origin can be used.
Animal protein hydrolysates include elastin, collagen, keratin, silk and milk protein hydrolysates, which may also be in the form of salts. Such products are marketed, for example, under the trademarks Dehylan® (Cognis), Promois® (Interorgana), Collapuron® (Cognis), Nutrilan® (Cognis), Gelita-Sol® (Deutsche Gelatine Fabriken Stoess & Co), Lexein® (Inolex) and Kerasol® (Croda).
Protein hydrolysates of vegetable origin are preferred, e.g. soy, almond, rice, pea, potato and wheat protein hydrolysates. Such products are available, for example, under the trademarks Gluadin® (Cognis), DiaMin® (Diamalt), Lexein® (Inolex) and Crotein® (Croda). Cationized protein hydrolysates can also be used, whereby the underlying protein hydrolysate can originate from animals, for example from collagen, milk or keratin, from plants, for example from wheat, corn, rice, potatoes, soy or almonds, from marine life forms, for example from fish collagen or algae, or from biotechnologically obtained protein hydrolysates. The protein hydrolysates underlying the cationic derivatives can be obtained from the corresponding proteins by chemical, especially alkaline or acid hydrolysis, by enzymatic hydrolysis and/or a combination of both types of hydrolysis. The hydrolysis of proteins usually results in a protein hydrolysate with a molecular weight distribution of about 100 Daltons up to several thousand Daltons. Preferred are those cationic protein hydrolysates whose underlying protein fraction has a molecular weight of 100 to 25000 Dalton, preferably 250 to 5000 Dalton. Furthermore, cationic protein hydrolysates are quaternized amino acids and mixtures thereof. Quaternization of the protein hydrolysates or amino acids is often carried out using quaternary ammonium salts such as N,N-dimethyl-N-(n-alkyl)-N-(2-hydroxy-3-chloro-n-propyl)-ammonium halides. Furthermore, the cationic protein hydrolysates can also be further derivatized. Typical examples of the cationic protein hydrolysates and derivatives are the products known under the INCI designations and commercially available: Cocodimonium Hydroxypropyl Hydrolyzed Collagen, Cocodimonium Hydroxypropyl Hydrolyzed Casein, Cocodimonium Hydroxypropyl Hydrolyzed Collagen, Cocodimonium Hydroxypropyl Hydrolyzed Hair Keratin, Cocodimonium Hydroxypropyl Hydrolyzed Keratin, Cocodimonium Hydroxypropyl Hydrolyzed Rice Protein, Cocodimonium Hydroxypropyl Hydrolyzed Silk, Cocodimonium Hydroxypropyl Hydrolyzed Soy Protein, Cocodimonium Hydroxypropyl Hydrolyzed Wheat Protein, Cocodimonium Hydroxypropyl Silk Amino Acids, Hydroxypropyl Arginine Lauryl/Myristyl Ether HCl, Hydroxypropyltrimonium Gelatin, Hydroxypropyltrimonium Hydrolyzed Casein, Hydroxypropyltrimonium Hydrolyzed Collagen, Hydroxypropyltrimonium Hydrolyzed Conchiolin Protein, Hydroxypropyltrimonium Hydrolyzed keratin, Hydroxypropyltrimonium Hydrolyzed Rice Bran Protein, Hydroxypropyltrimonium Hydrolyzed Silk, Hydroxypropyltrimonium Hydrolyzed Soy Protein, Hydroxypropyl Hydrolyzed Vegetable Protein, Hydroxypropyltrimonium Hydrolyzed Wheat Protein, Hydroxypropyltrimonium Hydrolyzed Wheat Protein/Siloxysilicate, Laurdimonium Hydroxypropyl Hydrolyzed Soy Protein, Laurdimonium Hydroxypropyl Hydrolyzed Wheat Protein, Laurdimonium Hydroxypropyl Hydrolyzed Wheat Protein/Siloxysilicate, Lauryldimonium Hydroxypropyl Hydrolyzed Casein, Lauryldimonium Hydroxypropyl Hydrolyzed Collagen, Lauryldimonium Hydroxypropyl Hydrolyzed Keratin, Lauryldimonium Hydroxypropyl Hydrolyzed Silk, Lauryldimonium Hydroxypropyl Hydrolyzed Soy Protein, Steardimonium Hydroxypropyl Hydrolyzed Casein, Steardimonium Hydroxypropyl Hydrolyzed Collagen, Steardimonium Hydroxypropyl Hydrolyzed Keratin, Steardimonium Hydroxypropyl Hydrolyzed Rice Protein, Steardimonium Hydroxypropyl Hydrolyzed Silk, Steardimonium Hydroxypropyl Hydrolyzed Soy Protein, Steardimonium Hydroxypropyl Hydrolyzed Vegetable Protein, Steardimonium Hydroxypropyl Hydrolyzed Wheat Protein, Steartrimonium Hydroxyethyl Hydrolyzed Collagen, Quaternium-76 Hydrolyzed Collagen, Quaternium-79 Hydrolyzed Collagen, Quaternium-79 Hydrolyzed Keratin, Quaternium-79 Hydrolyzed Milk Protein, Quaternium-79 Hydrolyzed Silk, Quaternium-79 Hydrolyzed Soy Protein, Quaternium-79 Hydrolyzed Wheat Protein.
The proportion by weight of the protein hydrolysate(s) in the total weight of the hair care composition is preferably 0.01 to 5 wt. %, more preferably 0.025 to 3 wt. % and in particular to 2 wt. %.
Detailed description of the present disclosure:
It should have become clear from the foregoing detailed description that the present disclosure may be one of the following:
An exemplary hair care product of the present disclosure has a hair care composition of the following formulation.
Insofar as these are not generally known substances or the INCI designations of such, commercially available precursors were used, which are described below.
The product Lanette 14 is a mixture of the fatty alcohols myristyl alcohol lauryl alcohol and cetyl alcohol, in this order in the weight ratio 96:2.5:1.5. The product Cetiol CC is a product essentially comprising dicaprylyl carbonate, which additionally comprises 0.0375 wt. % tocopherol. Dehyquart A CA is a product comprising water, citric acid and cetrimonium chloride in that order in the weight ratio 74.5:0.5:25. The product Nutrilan Keratin W PP is water, 2-phenoxyethanol, hydrolyzed keratin and potassium sorbate in this order in the weight ratio 79:0.8:20:0.2.
These and other sophisticated formulations were applied to the hair of test subjects and in the test salon in trials on 6 subjects with severely damaged hair, performed in half-side comparison against a very nourishing emulsion-based crucible treatment, significant improvement was achieved in the following parameters (English terms commonly used in the technical field are bracketed for completeness):
| Number | Date | Country | Kind |
|---|---|---|---|
| 102020128638.4 | Oct 2020 | DE | national |
This application is a U.S. National-Stage entry under 35 U.S.C. § 371 based on International Application No. PCT/EP2021/076038, filed Sep. 22, 2021, which was published under PCT Article 21(2) and which claims priority to German Application No. 102020128638.4, filed Oct. 30, 2020, which are all hereby incorporated in their entirety by reference.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/EP2021/076038 | 9/22/2021 | WO |
