Antidandruff systems using litsea essential oil and / or litsea extract

Abstract

The essential oil and / or extracts from Litsea species can be used as an antidandruff agent in cleansing compositions for the hair or scalp.

Description

[0001] 2025P00005WQ

[0002] Henkel AG & Co. KGaA

[0003] Dr. Baltzer 2025-11-17

[0004] Antidandruff systems using Litsea essential oil and / or Litsea extract

[0005] The present invention is concerned with the use of essential oil and / or extracts from Litsea species as a antidandruff agent in cleansing compositions for the hair or scalp, as well as such compositions comprising Litsea essential oil and / or extracts.

[0006] Cleansing compositions for the hair, skin or scalp, including shampoos, laundry detergent compositions and hard surface cleaning compositions containing Litsea essential oil (LEO) are disclosed in DE 102024212 238 A1. The LEO is used in such compositions as a preservative.

[0007] Even a slight flaking of the scalp or other hairy areas of the body is considered signs of poor care and hygiene perceived. It also works with dandruff usually accompanied by a torturous itching, which causes scratching reactions and injuries to the skin affected skin areas. Skin injuries, in turn, often form the basis for Infections and pathogens.

[0008] Dandruff formation can be caused by various factors such as hereditary predisposition, Tendency to increased sebum production (seborrhea), hormone fluctuations, stress, climatic conditions or incorrect hair care can be promoted. The decisive contribution to However, dandruff results from the colonization of the scalp with yeasts of the genus Malassezia.

[0009] When it comes to fighting dandruff, efforts have always been made to prevent germs from colonizing the scalp to reduce and / or eliminate with Malassezia. For this purpose, effective anti-dandruff active ingredients are known from the prior art, such as: for example Piroctone Olamine, Climbazol, zinc pyrithione, sulfur and / or selenium sulfide.

[0010] The effect of these anti-dandruff ingredients is mainly based on their fungicidal properties Characteristics. The previously mentioned anti-dandruff active ingredients have disadvantages because they also have one certain skin irritation potential have a low water solubility and can therefore only be used with Incorporate effort into common cosmetic products. Another disadvantage is their low cost biodegradability, making their use in cosmetic products increasingly strict is regulated or banned.

[0011] Anti-dandruff active ingredients based on natural substances cannot do the aforementioned anti-dandruff active ingredients completely replace them, as they often do not have a sufficient, immediate and / or long-lasting effect Show effectiveness.2025P00005WQ

[0012] 2

[0013] There is therefore still a need for compounds with good effectiveness against dandruff, which are accessible from natural sources and are biodegradable, and which are easy and can be easily incorporated into cosmetic cleaning compositions.

[0014] The fruit of Litsea species, especially Litsea cubeba, are a known source of essential oil. This essential oil has a lemony fragrance due to its high content of citral, limonene and other components. Citral as the main component can be present in an amount of 50%, in some species even 70 to 85%. It has surprisingly been discovered that the essential oil of Litsea species can be used as a natural anti dandruff agent. Fruit extracts from Litsea species also serve the same purpose and can be used as extract per se in the extraction medium, in a spray-dried from or sprayed onto a carrier, wherever solid actives are wanted or in encapsulated form.

[0015] In a first embodiment the subject-matter of this invention therefore is the use of essential oil and / or extracts from Litsea species as an antidandruff agent in cleansing compositions for the hair or scalp.

[0016] In a second embodiment the subject-matter is a cleansing composition for the hair or scalp which contains 0,1 to 5,0 wt.-% of essential oil and / or extracts from Litsea species by weight of the composition.

[0017] The composition according to the invention ensures thorough and gentle cleaning of the scalp and hair and at the same time has good care properties. In particular the composition according to the invention prevents building of dandruff on the scalp. Even if dandruff already exists, the use of the compositions according to the invention lead to a significant reduction until complete and sustainable elimination of dandruff. Surprisingly, it has been shown that the essential oil and / or extract from Litsea species contributes significantly to these effects.

[0018] Presumably the use of the essential oil and / or extract from Litsea species according to the invention or in the inventive compositions hinders the growth of microorganisms, that are involved in the development of flaky scalp, for example microorganisms Species Malassezia. This means the composition can also reduce redness and irritation relieve the scalp. The composition according to the invention helps to reduce dandruff and / or to eliminate, strengthen the natural skin barrier and provide hair and scalp with moisture.

[0019] “At least one”, as used herein, means one or more, i.e. 1 , 2, 3, 4, 5, 6, 7, 8, 9 or more of the referenced species. Similarly, “one or more”, as used herein, relates to at least one and comprises 1, 2, 3, 4, 5, 6, 7, 8, 9 or more. In connection with a given species, the term does not relate to the total number of molecules, but rather to the type of species. “At least one biosurfactant”, for example, thus means that one type of biosurfactant or two or more different types of biosurfactants may be present. In connection with amounts, the term relates to the total amount of the referenced species. With biosurfactants, for example, this means that the given amount is the total amount of all biosurfactants in the composition. Numeric values specified without decimal places here refer to the full value specified with one decimal place, i.e. for example, 99 % means 99.0 %, unless otherwise defined. The terms “about”, “approximately” or “approx.”, in connection with a numerical value, refer to a variance of ±10 %,2025P00005WQ

[0020] 3

[0021] preferably ±5 %, with respect to the given numerical value. The term “essentially free” within the context of this invention is to be interpreted as the respective compound is contained in the composition in an amount of less than 5 wt.-%, 4 wt.-%, 3 wt.-%, 2 wt.-%, 1.5 wt.-%, 1 wt.-%, 0.75 wt.-%, 0.5 wt.-%, 0.25 wt.-%, 0.1 wt.-%, 0.01 wt.-%, or 0.001 wt.-% based on the total weight of the composition, wherein the amounts are respectively more preferred in descending order. For example, 4 wt.-% is more preferred than 5 wt.-% and 3 wt.-% is more preferred than 4 wt.-%. “Free” within the context of this invention means that the respective compound is not added to the composition as a separate ingredient, so that it may only be present in the form of an additive in a raw material or of an impurity; in such cases it is contained in the composition in an amount of less than 5 wt.-%, 4 wt.-%, 3 wt.-%, 2 wt.-%, 1.5 wt.-%, 1 wt.-%, 0.75 wt.-%, 0.5 wt.-%, 0.25 wt.-%, 0.1 wt.-%, 0.01 wt.-%, or 0.001 wt.-% based on the total weight of the composition, wherein the amounts are respectively more preferred in descending order. All percentages given herein in relation to the compositions or formulations relate to weight % (wt.- %) relative to the total weight of the respective composition or formula, if not explicitly stated otherwise. Numeric ranges specified in the format "from x to y" include the specified values. If multiple preferred numeric ranges are specified in this format, it is understood that all ranges created by combining the different endpoints are also included.

[0022] “Cleansing compositions for the hair or scalp” according to the present invention comprise all conceivable compositions used for cleaning and / or conditioning hair, i.e. shampoos, conditioners, lotions and the like, as well as all conceivable compositions used to cleanse the scalp, i.e. soaps, shower gels, lotions, serums and the like.

[0023] The cleansing compositions for the hair or scalp according to the present invention may be in any form known for such products. Thus, they may be liquid, gel-like or paste-like compositions or solid compositions in the form of powders, granules, bars, blocks, tablets and the like. They may also be in the form of a unit-dose composition in a pouch, sachet or the like. The term “liquid”, as used herein, refers to compositions that are flowable and pourable at standard conditions (20 °C and 1013 mbar). NonNewtonian liquids are comprised as well.

[0024] In preferred uses or cleansing composition according to the invention the composition for hair or scalp contains 0,125 to 4,0 wt.-%, preferably 0,15 to 3,0 wt.-%, more preferably 0,175 to 2,0 wt.-%, more preferably 0,2 to 1 ,0 wt.-% and most preferably 0,2 to 0,5 wt.-% of essential oil and / or extracts from Litsea species by weight of the composition.

[0025] In a preferred embodiment of the present invention, the essential oil and / or extract from Litsea species are the sole active antidandruff agent in the composition. Uses or cleansing composition according to the invention, in which the compositions are free of other antidandruff agents besides the essential oil and / or extracts from Litsea species, are particularly preferred.

[0026] It has been found that further preservatives are also not needed in the inventive use and compositions. Particularly the absence of further preservatives adds to mildness and scalp compatibility of thecompositions. In a preferred embodiment, in uses or cleansing compositions the compositions are free of preservatives besides the essential oil from Litsea species.

[0027] The Litsea essential oil is preferably obtained from at least one Litsea species selected from the group consisting of Litsea cubeba, Litsea confertiflora, Litsea coriacea, Litsea auriculata, Litsea angustifolia, Litsea glutinosa, Litsea laeta, Litsea lanuginosa or Litsea subcoriacea, most preferably from Litsea cubeba. Litsea species are evergreen or deciduous trees or shrubs belonging to the laurel family, Lauraceae, and are native to parts of Asia and North America. The flowers, leaves and fruit of Litsea species, especially Litsea cubeba, can be used as a source of essential oil with a citrus / lemon fragrance due to their high content of citral as well as limonene and other components.

[0028] As already outlined above, the essential oil and / or extract of Litsea species can be used “as is” or in a further processed form like spray-dried, sprayed onto a carrier or in encapsulated form. It has been found that the use in encapsulated form enhances the antidandruff activity and improves shelf-stability of the compositions. Accordingly, preferred uses or cleansing composition are characterized in that the essential oil and / or extracts from Litsea species are used in encapsulated form.

[0029] In a preferred embodiment, the cleansing compositions for the hair or scalp according to the present invention comprise at least one biosurfactant.

[0030] Biosurfactants usually are surfactants obtained in a fermentation process from bacteria or yeasts.

[0031] Preferred biosurfactants according to this invention are glycolipids, lipopeptides or lipoproteins. In a preferred embodiment the biosurfactant is a glycolipid, preferably selected from the group consisting of rhamnolipids, sophorolipids and mannosylerythritollipids. Sophorolipids are glycolipids consisting of a hydrophobic fatty acid “tail” and a hydrophilic carbohydrate “head” which is sophorose, a disaccharide in which two glucose molecules are connected with a p-1 ,2 glycosidic bond. The fatty acid is typically a C16-22 saturated or unsaturated hydroxy fatty acid; its terminal or internal OH group is B-glycosidically linked to the sophorose molecule. The carboxylic end of the fatty acid may be free, as in the following examples:

[0032]

[0033] 2025P00005WQ

[0034] 5

[0035]

[0036] Alternatively, they may be internally esterified to form monomeric or dimeric lactones, as in the following examples.

[0037]

[0038] The open (acidic) form and the lactonic form may also be present simultaneously. In general, lactone sophorolipids are more efficient in reducing surface tension whereas acidic sophorolipids display better foaming properties. The hydroxy groups of the sophorose moiety may also be completely or partially esterified with carboxylic acids such as acetic acid.

[0039] Sophorolipids are produced by various yeast species such as Candida albicans, Candida apicola, Candida floricola, Candida kuoi, Candida riodocensis, Candida stellata, Candida tropicalis, Candida parapsilosis, Rhodotorula bajevae, Rhodotorula bogoriensis, Wickerhamiella domercqiae, Wickerhamomyces anomalus and Starmerella bombicola, and can be obtained from these microorganisms through fermentation.

[0040] Rhamnolipids are glycolipids in which a mono- or di-rhamnose unit is glycosidically linked to the hydroxy group of a -hydroxy fatty acid, which may in turn be esterified with the hydroxy group of another hydroxylated fatty acid. They can be obtained by fermentation of Pseudomonas bacteria, especially Pseudomonas aeruginosa, preferably grown on hydrophobic substrates such as n- alkanes or vegetable oils.2025P00005WQ

[0041] 6

[0042] Some examples of rhamnolipids are:

[0043]

[0044] There are two main classes of rhamnolipids, namely mono-rhamnolipids, which contain one rhamnose unit, and di-rhamnolipids with two rhamnose groups. Besides C10- carboxylic or hydroxycarboxylic acids, typical rhamnolipids may also contain carboxylic or hydroxycarboxylic acids with longer alkyl chains, such as C12. It is preferred for at least 50 wt.-% of the rhamnolipids to be di-rhamnolipids, preferably at least 90 wt.-% and up to 100%.

[0045] Mannosylerythritollipids (MELs) are also obtained from various yeasts. They consist of a hydrophilic 4- O-p-D-mannopyranosyl-meso-erythritol moiety and a hydrophobic fatty acid moiety.

[0046] In a preferred embodiment the compositions of the invention contain a surfactant system. In such a preferred embodiment, the uses or cleansing compositions according to the invention are characterized in that the composition contains a surfactant system, wherein the surfactant system contains

[0047] a) at least one anionic surfactant

[0048] b) at least an amphoteric and / or zwitterionic surfactant2025P00005WQ

[0049] 7

[0050] c) optionally, at least one nonionic surfactant.

[0051] Depending on the choice of the surfactant system, cleaning agents can be used in a variety of Embodiments which provide thorough cleaning of hair and scalp. Especially if it is flaky, irritated, itchy or inflamed.

[0052] However, it is essential that the surfactant system does not damage the scalp additionally irritates and / or dries out. When putting together the surfactant system, a careful balance between good foaming properties and gentleness on the skin must be ensured.

[0053] Cosmetic compositions for the treatment of hair and / or scalp in the sense of the present invention can be in solid embodiments, such as cleaning powder or granules, soap bar, cleaning cloth, porous body (solid cleaning foam), or as a liquid embodiment, such as a hair shampoo, 2-in-1 hair care shampoo, antidandruff shampoo, hair coloring shampoo and / or hair cleansing conditioner.

[0054] Solid cleaning compositions such as powders, granules, soap bars, cleaning wipes, porous bodies (solid foams) are preferably wetted with water before use, soaked or dissolved in water, then rubbed between the hands or foamed directly on the application surface and with water after application rinsed off.

[0055] In solid compositions within the meaning of the present invention, the surfactant system preferably is present in a weight proportion of 15-60% by weight of the total weight of the composition used. More preferred are proportions by weight of 20 - 60% by weight, particularly preferably 25-60% by weight and in particular 30-60% by weight.

[0056] Liquid cleansing compositions such as hair shampoos, 2-in-1 hair care shampoos, anti-dandruff shampoos, hair coloring shampoos, hair cleansing conditioners are mixed with water before, if necessary, foamed on the application surface and rinsed with water after use.

[0057] In liquid compositions within the meaning of the present invention, the surfactant system preferably is present in a proportion by weight of 1-30% by weight of the total weight of the composition used. More preferred are proportions by weight of 2 - 27.5% by weight, particularly preferably 2.5 - 25% by weight and in particular 5 - 20% by weight. In this context, “liquid” means that the compositions have a viscosity in the range of 3000 to 15,000 mPas (20 °C I Brookfield viscometer I spindle 5 / 20 rpm).

[0058] For the purposes of the present invention, anionic surfactants are in principle all anionic surfactants suitable for cosmetic use on the human body. These are characterized by a water-soluble, anionic group such as a carboxylate, sulfate, sulfonate or phosphate group and a lipophilic alkyl group with around 8 to 30 carbon atoms. In addition, the molecule may contain glycol or polyglycol ether groups, ester, ether and amide groups as well as hydroxyl groups.

[0059] Examples for suitable anionic surfactant types (i) in compositions according to the invention include: linear and branched fatty acids with 8 to 30 carbon atoms (soaps),2025P00005WQ

[0060] 8

[0061] ether carboxylic acids of the formula R-O-(CH2-CH2O)x-CH2-COOH, in which R is a linear or branched, saturated or unsaturated alkyl group with 8 to 30 C atoms and x = 0 or 1 to 16 (carboxylate surfactants)

[0062] N-acyl sarcosides with 8 to 24 C atoms in the acyl group (sarcosinate surfactants),

[0063] N-acyl taurides with 8 to 24 C atoms in the acyl group (taurate surfactants),

[0064] N-acyl isethionates with 8 to 24 C atoms in the acyl group (isethionate surfactants),

[0065] N-acylglycinates with 8 to 24 C atoms in the acyl group (glycinate surfactants),

[0066] N-acyl glutamates with 8 to 24 C atoms in the acyl group (glutamate surfactants),

[0067] N-acyl alalinates with 8 to 24 C atoms in the acyl group (alalinate surfactants) Sulfosuccinic acid mono- and / or dialkyl esters with 8 to 24 C atoms in the alkyl group and sulfosuccinic acid mono-alkyl polyoxyethyl esters with 8 to 24 C atoms in the alkyl group and alkyl group and 1 to 6 oxyethyl groups (sulfosuccinate surfactants),

[0068] alpha-olefin sulphonates with 8 to 24 C atoms (alpha-olefin sulphonate surfactants),

[0069] alkyl sulphates and / or alkyl ether sulphate salts of the formula R-(OCH2-CH2)n-O-SO3X, in which R is preferably a straight-chain or branched, saturated or unsaturated alkyl group having 8 to 30 C atoms, x is the number 0 or 1 to 12 and X is an alkali metal, alkaline earth metal, ammonium or alkanolamine ion,

[0070] sulphonates of unsaturated fatty acids with 8 to 24 carbon atoms and 1 to 6 double bonds, Sulfoacetates,

[0071] esters of tartaric acid and citric acid with alcohols, the addition products of approx. 2-15 molecules of ethylene oxide and / or propylene oxide to fatty alcohols with 8 to 22 carbon atoms, and / or

[0072] alkyl and / or alkenyl ether phosphates

[0073] the biosurfactants, for example rhamnolipids or sophorolipids mentioned above.

[0074] Preferred are sodium, potassium or ammonium salts of alkyl (ether) sulphates, sulphosuccinates, (alkyl)sulfonic acid esters, N-acyl isethionates, N-methyl N-acyl isethionates, sulfoacetates, NAcyl glycinates, N-acyl sarcosinates, N-acyl glutamates, N-acyl alaninates, carboxylates, NAcylta urates, N-methyl N-acyl taurates, phosphate esters, rhamnolipids, sophorolipids or mixtures thereof.

[0075] In a preferred embodiment, compositions according to the invention contain alkyl (ether) sulfates of the general formula R-(OCH2-CH2)n-OSO3X, in which R is a straight-chain or branched, saturated or unsaturated alkyl group having 8 to 24 carbon atoms, n is the number 0 or 1 to 12, and X is an alkali metal, alkaline earth metal, ammonium or alkanolamine ion. Particularly preferred are those known under the INCI designations sodium coco sulfate and / or sodium laureth sulfate (EO 1-4).

[0076] In a further preferred embodiment, compositions according to the invention are substantially free of sulfate surfactants. In this context, the term “substantially free” is preferably a maximum content of sulfate surfactants in the compositions according to the invention of of 0.5% by weight, more preferably 0.25% by weight, particularly preferably 0.1 % by weight and in particular 0 % by weight (based on the total weight of the composition).2025P00005WQ

[0077] 9

[0078] Instead, compositions according to the invention of this embodiment contain N-acyl taurates, N-methyl-N-acyl taurates, N-acyl isethionates, N-methyl-N-acyl isethionates, (alkyl)sulfonic acid esters or any mixtures thereof. Particularly preferred are the compounds listed under the INCI designations Sodium Methyl Cocoyl Taurate, Sodium Methyl Lauroyl Isethionate, Sodium methyl 2-sulfolau rates or mixtures thereof.

[0079] In a preferred embodiment, the compositions according to the invention are present as a solid composition and contain anionic surfactant(s) in a proportion by weight of 15 - 60% by weight of the total weight of the composition. More preferred are weight percentages of 20 - 60% by weight, particularly preferably 25 - 60% by weight and especially 30 - 60% by weight.

[0080] In a preferred embodiment, the compositions according to the invention are present as a solid composition and contain anionic surfactant(s) in a proportion by weight of 1 - 25% by weight of the total weight of the composition. More preferred are 2 - 20 % by weight, particularly preferably 2.5 - 17.5 % by weight and especially 3 - 20 % by weight.

[0081] Within this embodiment, particularly preferred are compositions according to the invention which are either listed under the INCI designations Sodium Coco Sulfate and / or Sodium Laureth Sulfate (EC 1-4) known alkyl (ether) sulfates or under the INCI designations Sodium Methyl Cocoyl Taurate, Sodium Methyl Lauroyl Isethionate and / or Sodium Methyl 2-Sulfolaurate in the above-mentioned proportions by weight.

[0082] Suitable zwitterionic or amphoteric surfactants (ii) are understood to be surfactants that carry both a cationic and an anionic charge in the molecule. Preferably amphoteric surfactants have at least one quaternary ammonium group and at least one -COO-- or -SOs--group, in addition to a preferably C8-C24 alkyl or acyl group, in the molecule.

[0083] Furthermore, they are capable of forming internal salts. Preferred amphoteric surfactants are betaines such as N-alkyl-N,N-dimethylammonium glycinates, for example cocoalkyldimethylammonium glycinate, N-acylaminopropyl-N,N-dimethylammonium glycinate, for example the cocosacylaminopropyl dimethylammonium glycinate, and 2-alkyl-3-carboxymethyl-3-hydroxyethyl-imidazolines, each with 8 to 18 C atoms in the alkyl or acyl group, and the cocosacylaminoethyl hydroxyethyl carboxymethyl glycinate. Particularly preferred amphoteric or zwitterionic surfactants are betaines and alkylampho(di)acetates such as those known under the INCI designations cocamidopropyl betaines, lauramidopropyl betaines, cocoampho(di)acetates and / or lauroapho(di)acetates.

[0084] The compositions according to the invention contain amphoteric and / or zwitterionic surfactants preferably in a proportion by weight of 0.5 - 20% by weight of the total weight of the composition. More preferred are proportions by weight of 0.5 - 17.5% by weight, particularly preferably 0.5 - 15 wt.% and in particular 0.5 -10 wt.%.

[0085] In a particularly preferred embodiment, the surfactant system comprises

[0086] (i) alkyl (ether) sulfates and

[0087] (ii) betaines.2025P00005WQ

[0088] 10

[0089] In a further preferred embodiment, the surfactant system comprises

[0090] (i) taurate surfactants, isethionate surfactants and / or (alkyl) sulfonic acid esters and

[0091] (ii) betaines.

[0092] For some embodiments, in which the mildness of the selected surfactant system is particularly important, it may be advantageous if the surfactant system further contains a non-ionic surfactant (iii).

[0093] Suitable non-ionic surfactants and / or emulsifiers can be selected from amine oxides, such as from among the INCI names Cocamine Oxide, Lauramine Oxide and cocamidopropylamine oxide, fatty acid alkanolamides such as, for example from compounds known under the INCI designations Cocamide MEA and Coamide DEA, mixtures of alkyl (oligo)-glucosides and fatty alcohols such as the commercially available product Montanov product Montanov®68, sterols such as zoosterols and phytosterols, phospholipids, alkyl(oligo)glycosides, such as those from the INCI designations caprylyl / capryl glucosides, decyl glucosides, lauryl glucosides and coco glucosides compounds, alkoxylated esters such as those from the INCI designations PEG-7 Glyceryl Cocoate and PEG-40 Hydrogenated Castor, polyglycerol esters and / or their salts, mannosyl esters their salts, mannosylerythritol lipids (MEL).

[0094] Particularly preferred due to their foaming power and / or foaming boosting effect are alkyl(oligo)glycosides. Also preferred are alkoxylated esters, in particular PEG-7 glyceryl cocoates, because these also serve as refatting agents and support or enable the solubilization of water-insoluble components, which can be added to the compositions which may be added to the compositions as active care ingredients.

[0095] The compositions according to the invention contain non-ionic surfactants preferably in 0.1 - 20% by weight of the total weight of the composition. More preferred are proportions by weight of 0.1 - 15% by weight, particularly preferably 0.1 - 12.5% by weight and in particular 0.1 - 10 % by weight.

[0096] In a particular preferred embodiment, uses or cleansing compositions according to the invention are characterized in that the composition contains the surfactant system in an amount of 1 to 60 % by weight of the total composition, wherein

[0097] (i) the anionic surfactant is selected from sodium-, potassium- or ammonium salts of alkyl(ether)sulfates, sulfosuccinates, (alkyl)sulfonic acid esters, N-acylisethionates, N- Methyl-N-Acylisethionates, Sulfoacetates, N-Acylglycinates, N-Acylsarcosinates, N- Acylglutamates, N-Acylalaninates, Carboxylates, N-Acyltaurates, N-Methyl-N-Acyltaurates, phosphate esters, rhamnolipids, sophorolipids or mixtures thereof

[0098] (ii) the amphoteric and / or zwitterionic surfactant is selected from betaines, sultaines, Hydroxysultaines, alkylampho(di)acetates or mixtures thereof

[0099] (iii) the nonionic surfactant is selected from alkyl(oligo)glycosides and / or alkoxylated esters.

[0100] Within this embodiment, compositions according to the invention are particularly preferred which contain (i) anionic surfactants selected fromalkyl (ether) sulfates or

[0101] taurate surfactants, isethionate surfactants and / or (alkyl)sulfonic acid esters

[0102] (ii) amphoteric and / or zwitterionic surfactants selected from betaines

[0103] (iii) non-ionic surfactants selected from alkyl (oligo)glycosides and / or alkoxylated esters.

[0104] Besides the surfactants mentioned above, the cleansing composition for the hair or scalp preferably comprise at least one further ingredient selected from the group consisting of nonionic polymers, anionic polymers, amino acids, oligopeptides, vitamins, provitamins, vitamin precursors, bio quinones, purine (derivatives), taurine (derivatives), L-carnitine (salts), panthenol, pantothenic acid, 2-furanone (derivatives), ectoine, allantoin, plant extracts, ester oils, UV protective filters, structurants, thickeners, electrolytes, pH regulators, dyes, perfume oils, anti-dandruff agents, opacifiers, pearlescent agents, pigments, stabilizing agents, swelling agents, complexing agents, propellants, preservatives, antioxidants or mixtures thereof.

[0105] Liquid, gel-like and paste-like compositions may also contain one or more thickeners to regulate and modify their viscosity and their rheological properties. These may be selected from all organic or inorganic thickeners, polymeric or monomeric, known to the skilled person, such as natural organic thickeners and their derivatives, synthetic organic thickeners or inorganic thickeners such as clays or silica. Electrolytes may also be used to regulate viscosity. Organic natural thickeners and their derivatives, such as agar, carrageenan, alginates, pectins, guar gum, gellan gum, starch, dextrin, gelatin casein, carboxymethylcellulose and similar cellulose ethers, hydroxyethyl cellulose, hydroxypropyl cellulose and others, are preferred, as are synthetic organic thickeners such as optionally substituted (meth)acrylic acid polymers, vinyl polymers, polycarboxylic acids, polyethers and the like.

Claims

2025P00005WQ12Claims:

1. Use of essential oil and / or extracts from Litsea species as an antidandruff agent in cleansing compositions for the hair or scalp.

2. Cleansing composition for the hair or scalp, characterized in that it contains 0,1 to 5,0 wt.-% of essential oil and / or extracts from Litsea species by weight of the composition.

3. Use according to claim 1 or cleansing composition according to claim 2, characterized in that the compositions comprise at least one biosurfactant.

4. Use or cleansing composition according to any one of the preceding claims, characterized in that the compositions are free of other antidandruff agents besides the essential oil and / or extracts from Litsea species.

5. Use or cleansing composition according to any one of the preceding claims, characterized in that the compositions are free of preservatives besides the essential oil from Litsea species.

6. Use or cleansing composition according to any one of the preceding claims, characterized in that the Litsea species used to obtain the essential oil are selected from the group consisting of Litsea cubeba, Litsea confertiflora, Litsea coriacea, Litsea auriculata, Litsea angustifolia, Litsea glutinosa, Litsea laeta, Litsea lanuginosa or Litsea subcoriacea.

7. Use or cleansing composition according to any one of the preceding claims, characterized in that the essential oil and / or extracts from Litsea species are used in encapsulated form.

8. Use or cleansing composition according to any one of the preceding claims, characterized in that the composition contains 0,125 to 4,0 wt.-%, preferably 0,15 to 3,0 wt.-%, more preferably 0,175 to 2,0 wt.-%, more preferably 0,2 to 1 ,0 wt.-% and most preferably 0,2 to 0,5 wt.-% of essential oil and / or extracts from Litsea species by weight of the composition.

9. Use or cleansing composition according to any one of the preceding claims, characterized in that the composition contains a surfactant system, wherein the surfactant system containsd) at least one anionic surfactante) at least an amphoteric and / or zwitterionic surfactantf) optionally, at least one nonionic surfactant.

10. Use or cleansing composition according to claim 9, characterized in that the composition contains the surfactant system in an amount of 1 to 60 % by weight of the total composition, wherein(iv) the anionic surfactant is selected from sodium-, potassium- or ammonium salts of alkyl(ether)sulfates, sulfosuccinates, (alkyl)sulfonic acid esters, N-acylisethionates, N- Methyl-N-Acylisethionates, Sulfoacetates, N-Acylglycinates, N-Acylsarcosinates, N- Acylglutamates, N-Acylalaninates, Carboxylates, N-Acyltaurates, N-Methyl-N-Acyltaurates, phosphate esters, rhamnolipids, sophorolipids or mixtures thereof(v) the amphoteric and / or zwitterionic surfactant is selected from betaines, sultaines, Hydroxysultaines, alkylampho(di)acetates or mixtures thereof(vi) the nonionic surfactant is selected from alkyl(oligo)glycosides and / or alkoxylated esters.

Images