An anhydrous cleansing composition for hair

Abstract

The present invention provides an anhydrous cleansing composition comprising: 5 to 80 wt% of surfactant comprising at least 10 wt% of anionic surfactant with respect to the total weight of surfactant; 0.01 to 10 wt% of conditioning agent comprising cationic polymer; 2 to 80 wt% of filler comprising at least 70 wt% salt selected from the group of sodium, potassium salts of chloride, sulfate, carbonate, nitrate, acetate, gluconate; citrate or copper salts of sulfate, chloride, gluconate; zinc salts of chloride, sulfate, nitrate and acetate; ammonium chloride, ammonium sulfate and mixtures thereof.

Description

[0001] P0000416 CPL

[0002] 1

[0003] AN ANHYDROUS CLEANSING COMPOSITION FOR HAIR

[0004] Field of the Invention

[0005] The present invention relates to cleansing compositions. The invention particularly relates to anhydrous cleansing compositions and methods for forming stable liquid personal cleansing

[0006] 5 formulations therefrom. More particularly the invention relates to powder-based compositions which are capable of being reconstituted with a suitable liquid carrier and particularly for use as hair cleansing compositions.

[0007] Background of the Invention

[0008] The present invention relates to cleansing compositions. The invention particularly relates to dry compositions and methods for forming liquid personal cleansing formulations therefrom. More particularly the invention relates to powder-based compositions which are capable of being reconstituted with a suitable liquid carrier. More particularly, the shampoo powder of the present invention, upon contact with water and shear stresses, forms a liquid that does not compromise lather or scent, creating a mild and conditioning shampoo.

[0009] 15 The invention has been developed primarily for use in personal wash application and will be described hereinafter with reference to this application. However, it will be appreciated that the invention is not limited to this particular field of use.

[0010] Any discussion of the prior art throughout the specification should in no way be considered as an admission that such prior art is widely known or forms part of the common general knowledge in the field.

[0011] Personal cleansing compositions are available in wide ranging product formats e.g. from soap bars, liquid soap, body-wash compositions and self-foaming compositions to shampoos. Sometimes such cleansing compositions are also included in cleansing wipes.

[0012] Liquid cleansing formulations have been known for a long time. There is a growing consumer

[0013] 25 demand for refill packs of such liquid formulations, however the refill packs do not fully solve the problems or expenses associated with the bottled liquid formulations such as cost of packaging and handling and transport difficulties.

[0014] As an alternative dry powdered compositions which can be reconstituted to obtain liquid formulations by consumer are a feasible option which can reduce the costs as well as avoid P0000416 CPL

[0015] 2 handling and transporting issues. Nonetheless, such compositions also have problems such as shelf life, appearance of the reconstituted liquid formulation, time of reconstitution, uneven reconstitution, separation of phases and the settling of gel etc.

[0016] Summary of the Invention

[0017] 5 First aspect of the present invention provides an anhydrous hair cleansing composition comprising: i) 5 to 80 wt% of surfactant comprising at least 10 wt% of anionic surfactant with respect to the total weight of surfactant; ii) 0.01 to 10 wt% of conditioning agent comprising cationic polymer; and iii) 2 to 80 wt% of filler, the filler comprising at least 70 wt% salt with respect to the total weight of filler, wherein the salt is selected from the group of sodium, potassium salts of chloride, sulfate, carbonate, nitrate, acetate, gluconate, citrate; copper salts of sulfate, chloride, gluconate; zinc salts of chloride, sulfate, nitrate and acetate; ammonium chloride, ammonium sulfate and mixtures

[0018] 15 thereof.

[0019] Second aspect of the present invention provides a liquid cleansing composition comprising: i) 0.1 to 30 wt% of surfactant; ii) 0.01 to 10 wt% of conditioning agent comprising cationic polymer; iii) 2 to 60 wt% of a salt selected from the group of sodium, potassium salts of

[0020] 20 chloride, sulfate, carbonate, nitrate, acetate, gluconate, citrate; copper salts of sulfate, chloride, gluconate; zinc salts of chloride, sulfate, nitrate and acetate; ammonium chloride, ammonium sulfate and mixtures thereof; iv) 55 to 97 wt% liquid carrier.

[0021] Third aspect of the present invention provides a method of making a liquid hair cleansing composition from the dry composition according to the first aspect, the method comprising steps of, taking the dry composition and a container and diluting the dry composition with a liquid carrier.

[0022] Fourth aspect of the present invention provides use of a dry composition according to the first aspect to obtain a liquid formulation according to the second aspect.

[0023] 30 These and other aspects, features and advantages will become apparent to those of ordinary skill in the art from a reading of the following detailed description and the appended claims. For P0000416 CPL

[0024] 3 the avoidance of doubt, any feature of one aspect of the present invention may be utilized in any other aspect of the invention.

[0025] The term "comprising" is meant not to be limiting to any subsequently stated elements but rather to encompass non-specified elements of major or minor functional importance. In other

[0026] 5 words the listed steps, elements or options need not be exhaustive. Whenever the words "including" or "having" are used, these terms are meant to be equivalent to "comprising" as defined above. In other words, the listed steps or options need not be exhaustive. It is noted that the examples given in the description below are intended to clarify the invention and are not intended to limit the invention to those examples per se. Similarly, all percentages are

[0027] 10 weight / weight percentages unless otherwise indicated.

[0028] Except in the operating and comparative examples, or where otherwise explicitly indicated, all numbers in this description and claims indicating amounts of material or conditions of reaction, physical properties of materials and / or use are to be understood as modified by the word "about".

[0029] Numerical ranges expressed in the format "from x to y" are understood to include x and y. When for a specific feature multiple preferred ranges are described in the format "from x to y", it is understood that all ranges combining the different endpoints are also contemplated.

[0030] It should be noted that in specifying any range of concentration or amount, any particular upper concentration can be associated with any particular lower concentration or amount.

[0031] 20 For a more complete understanding of the above and other features and advantages of the invention, reference should be made to the following detailed description of preferred embodiments.

[0032] Detailed Description of the Invention

[0033] The present invention relates to dry compositions and methods for forming stable liquid

[0034] 25 personal cleansing formulations. More particularly the invention relates to powder-based compositions which are capable of being reconstituted with a suitable liquid carrier.

[0035] The present inventors have been able to formulate dry compositions with selected components such that the resultant compositions are readily solubilized and stable in liquid carriers. Further the dry compositions upon reconstitution in suitable liquid carriers result in liquid formulations

[0036] 30 having desired rheology, viscosity, transparency and do not show any gel settling or separation. P0000416 CPL

[0037] 4

[0038] Further, the liquid formulations obtained from reconstitution of the dry compositions allow for easier delivery of the dry compositions and increased shelf stability.

[0039] The present invention provides dry compositions that are suitable for reconstituting into stable liquid cleansing formulations which have the properties such that they can be readily and

[0040] 5 quickly reconstituted at the site of application such as hair, scalp or skin or just before application. Such compositions should have properties of quick dissolution and leave no sediment as the result of the reconstitution. Generally powder concentrates, apart from the functional ingredients, have fillers that add volume to such compositions and only help to deliver the ingredients in a powder format for consumer suitability purpose without providing any functional benefits. Many of such fillers are known in the industry, but the inventors did not find the conventional fillers compatible with the requirement of compositions having such properties as mentioned supra. It was a surprising finding of the inventors of the present invention that when some of the selected salts were tested, it was unexpectedly found that they could be used as fillers while also providing functional benefits.

[0041] 15 Normally, powder cleansers contain very little surfactants along with high amounts of fillers e.g. starch, kaolin, clay minerals etc. Due to less surfactants and the nature of fillers, these powder shampoos have been ineffective in cleansing and conditioning which is the primary deliverable. Most of such marketed powder shampoos hence failed to deliver on consumer expectations (lathering, cleansing, conditioning, after-feel, smoothness, etc.) as the product fillers bring in

[0042] 20 unnecessary deposition and unwanted performance issues & sensory to consumers.

[0043] The composition of the present invention provides a particular combination of ingredients in specific concentration ranges that dissolves in water rapidly, lathers well and imparts lubricity to hair fibre without yielding unwanted deposition on the scalp / hair fibre.

[0044] Anhydrous (dry) Composition

[0045] The dry compositions of the present invention are preferably in powder form, the formulation may be granular. The dry compositions may also be formulated in a solid tablet form by conventional industry methods. The dry compositions of the present invention are made with an objective of being reconstituted with a suitable liquid carrier to form stable liquid formulations which are preferably used as cleansing compositions and more preferably personal hair wash

[0046] 30 cleansing compositions. P0000416 CPL

[0047] 5

[0048] The dry compositions of the present invention may be in different formulation formats suitable for use in personal cleansing compositions such as in powder form, as loose powder or encapsulated form or in solid state forms such as tablets, cubes and the likes known conventionally in the industry.

[0049] 5 The dry composition of the present invention suitable for forming stable liquid cleansing compositions comprises: i) 5 to 80 wt% of surfactant comprising at least 10 wt% of anionic surfactant with respect to the total weight of surfactant; ii) 0.01 to 10 wt% of conditioning agent comprising cationic polymer; and iii) 2 to 80 wt% of filler, the filler comprising at least 70 wt% salt with respect to the total weight of filler, wherein the salt is selected from the group of sodium, potassium salts of chloride, sulfate, carbonate, nitrate, acetate, gluconate, citrate; copper salts of sulfate, chloride, gluconate; zinc salts of chloride, sulfate, nitrate and acetate; ammonium chloride, ammonium sulfate and mixtures thereof.

[0050] 15 It is preferred that at least 70 wt% of the total surfactant is an anionic surfactant.

[0051] It is preferred that in the dry composition the salt is selected from the group of sodium chloride, sodium sulfate, sodium carbonate, sodium nitrate, sodium acetate, sodium gluconate, sodium citrate, potassium chloride, potassium sulfate, potassium carbonate, potassium nitrate, potassium acetate, potassium gluconate, potassium citrate, copper sulfate, copper chloride,

[0052] 20 copper gluconate, zinc chloride, zinc sulfate, zinc nitrate, zinc acetate, ammonium chloride, ammonium sulfate and mixtures thereof.

[0053] It is further preferred that in the dry composition the salt is selected from the group of sodium chloride, sodium sulfate, sodium gluconate, sodium citrate, potassium sulfate, potassium citrate, sodium carbonate, sodium nitrate, sodium acetate, potassium carbonate, potassium nitrate, potassium acetate, zinc sulfate, zinc acetate, ammonium sulfate and mixtures thereof.

[0054] It is most preferred that in the dry composition the salt is selected from the group of sodium chloride, sodium sulfate, sodium gluconate, sodium citrate, potassium sulfate, potassium citrate and mixtures thereof.

[0055] It is preferred that in the dry composition the chelating agent is in the range of 0.001 to 5.5 wt%.

[0056] 30 It is preferable that the chelating agent is selected from the group of Ethylene Diamine Tetra P0000416 CPL

[0057] 6

[0058] Acetic acid (EDTA), Disodium EDTA, Diethylene Triamine Penta Acetic acid (DTPA), their derivatives, combinations and mixtures thereof.

[0059] It is preferred that in the dry composition the preservative is in the range of 0.01 to 5.5 wt% of the dry composition. It is preferable that the preservative is benzoic acid or derivative, paraben

[0060] 5 derivative, or a sorbate derivative or mixtures or combinations thereof. It is most preferable that the preservative is selected from sodium benzoate, benzoic acid, potassium sorbate, sodium salicylate, phenoxyethanol, methylparaben, ethylparaben, propylparaben, butylparaben and heptyl paraben, combinations or mixtures thereof.

[0061] It is preferred that in the dry composition the conditioning agent is selected from silicone,

[0062] 10 cationic polymer, emulsions, oils and mixtures thereof. It is preferred that the conditioning agent is a cationic polymer. It is most preferred that in the dry composition the cationic polymer preferably has charge density 0.01 meq / g to 5 meq / g. It is preferable that the cationic polymer is in the range of 0.01 to 10 wt% of the dry composition.

[0063] Surfactant

[0064] The present invention comprises a surfactant. The surfactant may be a soap or a non-soap surfactant. The compositions of the present invention may contain anionic surfactants, nonionic surfactants, cationic surfactants or amphoteric surfactants.

[0065] It is preferred that the surfactant in the dry composition is present in the range of 5 to 80 wt% by weight of the dry composition, more preferably in the range of 10 to 75 wt% by weight of the dry

[0066] 20 composition, further preferably in the range of 20 to 70 wt% by weight of the dry composition and most preferably in the range of 25 to 68 wt% by weight of the dry composition.

[0067] It is preferred that the surfactant in the dry composition is present in at least 5 wt%, more preferably at least 10 wt%, further preferably at least 20 wt% and most preferably at least 25 wt% by weight of the dry composition.

[0068] It is preferred that the surfactant in the dry composition is present in at most 80 wt%, more preferably at most 75 wt%, further preferably at most 70 wt% and most preferably at most 68 wt% by weight of the dry composition.

[0069] Preferably the anionic surfactants for the purposes of the present invention are, for example, acylamino acids and salts thereof, such as acylglutamates, in particular sodium acyl glutamate

[0070] 30 sarcosinates, for example myristyl sarcosinate, TEA-lauryl sarcosinate, sodium lauryl P0000416 CPL

[0071] 7 sarcosinate and sodium cocoyl sarcosinate. Sulfonic acids and their salts, such as acylisethionates, sodium I ammonium cocoyl isethionate, sulfosuccinates, for example dioctyl sodium sulfosuccinate, disodium laureth sulfo- succinate, disodium lauryl sulfosuccinate and disodium undecylenamido MEA- sulfosuccinate; and sulfur acids, such as alkyl ether sulfate, for

[0072] 5 example sodium, ammonium, magnesium, MIPA, TIPA laureth sulfate, sodium myreth sulfate and sodium C12-13 pareth sulphate, alkyl sulfates, for example sodium, ammonium and TEA lauryl sulfate. Furthermore, taurates, for example sodium lauroyl taurate and sodium methylcocoyl taurate, ether carboxylic acids, for example sodium laureth-13 carboxylate and sodium PEG-6 cocamide carboxylate, phosphoric acid esters and salts, such as DEA-oleth-10 phosphate and dilaureth-4 phosphate, alkylsulfonates, for example sodium cocosmonoglyceride sulfate, sodium 012-16 Olefin sulfonate, sodium lauryl sulfoacetate and magnesium PEG-3 cocamide sulphate. Acylglutamates such as di-TEA-palmitoylaspartate and sodium caprylic / capric glutamate, acyl peptides, for example palmitoyl, hydrolyzed milk protein, sodium cocoyl hydrolyzed soy protein and sodium / potassium cocoyl hydrolyzed collagen as well as carboxylic

[0073] 15 acids and derivatives, such as lauric acid, aluminum stearate, magnesium alkanolate and tincient cylenate, ester carboxylic acids, for example calcium stearoyl lactylate, laureth-6 citrate and sodium PEG-4 lauramid carboxylate, alkylarylsulfonate.

[0074] The most preferred anionic surfactants for the compositions of the present invention are selected from the group of sulfonic acids, their salts; alkyl ether sulfates, ammonium lauryl

[0075] 20 sulfate, sodium laureth sulfate, sodium lauryl sarcosinate, sodium laureth sarcosinate, disodium lauryl sulfosuccinate, sodium cocoyl glutamate, sodium myreth sulfate, sodium pareth sulfate, sodium lauryl sulfate, alpha olefin sulfonate, ammonium laureth sulfate, mixtures and combinations thereof.

[0076] It is preferred that the anionic surfactant in the dry composition is present in the range of 5 to 90

[0077] 25 wt% by weight of the dry composition, more preferably in the range 20 to 75 wt% by weight of the dry composition, further preferably in the range of 30 to 70 wt% by weight of the dry composition and most preferably in the range of 35 to 68 wt% by weight of the dry composition.

[0078] It is preferred that the anionic surfactant in the dry composition is present in at least 5 wt%, more preferably at least 20 wt%, further preferably at least 30 wt% and most preferably at least

[0079] 30 35 wt% by weight of the dry composition. P0000416 CPL

[0080] 8

[0081] It is preferred that the anionic surfactant in the dry composition is present in at most 80 wt%, more preferably at most 75 wt%, further preferably at most 70 wt% and most preferably at most 68 wt% by weight of the dry composition.

[0082] It is highly preferred that the surfactant of the present composition is present in at least 70 wt%

[0083] 5 anionic surfactant, more preferably at least 80 wt% and most preferably at least 90 wt% of the total weight of total surfactant. In a preferred aspect the surfactant is an anionic surfactant.

[0084] Preferably the cationic surfactants for the purposes of the present invention are, for example, quarternary surfactants, these include, but are not limited to: benzalkonium chloride, alkyl betaine, alkylamidopropyl betaine, alkyl-amidopropylhydroxysultaine alkylamines, alkylimidazoles and ethoxylated amines.

[0085] Preferably the amphoteric surfactants for the purposes of the present invention are, for example, acyl I dialkylethylene diamines, for example sodium acylamphoacetate, disodium acyl amphodipropionate, disodium alkylamphodiacetate, sodium acrylamphohydroxypropyl sulfonate, disodium acrylamphodiacetate and sodium acrylamphopropionate, N-alkylamino

[0086] 15 acids, for example aminopropyl alkylglutamide, alkylaminopropionic acid, sodium alkylimidodipropionate and lauroamphocarboxyglycinate.

[0087] Preferably the non-ionic surfactants for the purposes of the present invention are, for example, Alkanolamides, such as Cocamide MEA DEA / MIPA, esters produced by the esterification of carboxylic acids with ethylene oxide, glycerol, sorbitan or other alcohols, ethers, for example

[0088] 20 ethoxylated alcohols, ethoxylated lanolin, ethoxylated poly-siloxanes, propoxylated POE ethers and alkyl polyglycosides such as lauryl glucoside, decyl glycoside and cocoglycoside.

[0089] Suitable surfactants that may be used in the formulations disclosed herein may comprise one or more of sodium cocoyl isethionate, disodium lauryl sulfosuccinate, lauryl glucoside, myristyl glucoside, sodium sulfate, sodium silicate, sodium coco sulfate, sodium lauryl sulfate. In one embodiment, the surfactant may comprise sodium cocoyl isethionate (e.g., Jordapon® SCI powder). In another embodiment, the surfactant may comprise disodium lauryl sulfosuccinate (e.g., Plantapon® SUS). In a further embodiment, the surfactant may comprise a mixture of lauryl glucoside, myristyl glucoside, sodium sulfate, sodium silicate, and sodium coco sulfate (e.g., Glucopol® 50 G). In yet another embodiment, the surfactant may comprise sodium lauryl

[0090] 30 sulfate (e.g., Texapon® Z-95 P). Suitable surfactants are not limited to the ones enumerated herein and may include other surfactants that are in powder form prior to their incorporation into the formulation and are water-soluble to maximize the cleansing potential of the formulation. P0000416 CPL

[0091] 9

[0092] Co-surfactants

[0093] The compositions of the present invention may comprise a co-surfactant. It is preferred that the present composition comprises co-surfactants in the range of 0 to 20 wt%, more preferably 2 to 18 wt% and most preferably 5 to 15 wt%.

[0094] 5 Co-surfactants for the purposes of the present invention may be anionic, cationic, amphoteric, non-ionic or zwitterionic, mixtures or combinations thereof.

[0095] A zwitterionic surfactant can be a co-surfactant selected from the group consisting of: lauryl hydroxysultaine, cocamidopropyl hydroxysultaine, coco-betaine, cocamidopropyl-betaine, coco- hydroxysultaine, coco-sultaine, lauryl betaine, lauryl sultaine, and mixtures thereof.

[0096] The non-ionic co-surfactant can be selected from the group consisting of alkyl polyglucoside, alkyl glycoside, acyl glucamide and mixtures thereof. Non-limiting examples of alkyl glucosides can include decyl glucoside, cocoyl glucoside, lauroyl glucoside and combination thereof.

[0097] When the compositions of the present invention comprise a co-surfactant, it is preferred to use an anionic co-surfactant. The anionic co-surfactant can be selected from the group consisting of

[0098] 15 isethionates, sarcosinates, sulfosuccinates, sulfonates, sulfoacetates, glucosides, acyl glycinates, acyl alaninates, glucose carboxylates, amphoacetates, taurates, and mixtures thereof.

[0099] Suitable isethionate surfactants can include the reaction product of fatty acids esterified with isethionic acid and neutralized with sodium hydroxide. Suitable fatty acids for isethionate

[0100] 20 surfactants can be derived from coconut oil or palm kernel oil including amides of methyl tauride. Non-limiting examples of isethionates can be selected from the group consisting of sodium lauroyl methyl isethionate, sodium cocoyl isethionate, ammonium cocoyl isethionate, sodium hydrogenated cocoyl methyl isethionate, sodium lauroyl isethionate, sodium cocoyl methyl isethionate, sodium myristoyl isethionate, sodium oleoyl isethionate, sodium oleyl methyl

[0101] 25 isethionate, sodium palm kerneloyl isethionate, sodium stearoyl methyl isethionate, and mixtures thereof.

[0102] Non-limiting examples of sarcosinates can be selected from the group consisting of sodium lauroyl sarcosinate, sodium cocoyl sarcosinate, sodium myristoyl sarcosinate, TEA-cocoyl sarcosinate, ammonium cocoyl sarcosinate, ammonium lauroyl sarcosinate, dimer dilinoleyl bis-

[0103] 30 lauroylglutamate / lauroylsarcosinate, disodium lauroamphodiacetate lauroyl sarcosinate, isopropyl lauroyl sarcosinate, potassium cocoyl sarcosinate, potassium lauroyl sarcosinate, P0000416 CPL

[0104] 10 sodium cocoyl sarcosinate, sodium lauroyl sarcosinate, sodium myristoyl sarcosinate, sodium oleoyl sarcosinate, sodium palmitoyl sarcosinate, TEA-cocoyl sarcosinate, TEA-lauroyl sarcosinate, TEA-oleoyl sarcosinate, TEA-palm kernel sarcosinate, and combinations thereof.

[0105] Non-limiting examples of sulfosuccinate surfactants can include disodium N-octadecyl

[0106] 5 sulfosuccinate, disodium lauryl sulfosuccinate, diammonium lauryl sulfosuccinate, sodium lauryl sulfosuccinate, disodium laureth sulfosuccinate, tetrasodium N-(1 ,2-dicarboxyethyl)-N-octadecyl sulfosuccinnate, diamyl ester of sodium sulfosuccinic acid, dihexyl ester of sodium sulfosuccinic acid, dioctyl esters of sodium sulfosuccinic acid, and combinations thereof.

[0107] Non-limiting examples of sulfonates can include alpha olefin sulfonates, linear alkylbenzene

[0108] 10 sulfonates, sodium laurylglucosides hydroxypropylsulfonate and combinations thereof.

[0109] Non-limiting examples of sulfoacetates can include sodium lauryl sulfoacetate, ammonium lauryl sulfoacetate and combinations thereof.

[0110] Non-limiting examples of acyl glycinates can include sodium cocoyl glycinate, sodium lauroyl glycinate and combinations thereof.

[0111] Non-limiting examples of acyl alaninates can include sodium cocoyl alaninate, sodium lauroyl alaninate, sodium N-dodecanoyl-1-alaninate and combinations thereof.

[0112] Non-limiting examples of glucose carboxylates can include sodium lauryl glucoside carboxylate, sodium cocoyl glucoside carboxylate and combinations thereof.

[0113] Non-limiting examples of alkyl ether carboxylate can include sodium laureth-4 carboxylate,

[0114] 20 laureth-5 carboxylate, laureth-13 carboxylate, sodium C12-13 pareth-8 carboxylate, sodium C12-15 pareth-8 carboxylate and combinations thereof.

[0115] Non-limiting examples of alkylamphoacetates can include sodium cocoyl amphoacetate, sodium lauroyl amphoacetate and combinations thereof.

[0116] Non-limiting examples of acyl taurates can include sodium methyl cocoyl taurate, sodium

[0117] 25 methyl lauroyl taurate, sodium methyl oleoyl taurate and combinations thereof.

[0118] Chelating Agent

[0119] The present invention may comprise a chelating agent. It is preferred that when the chelating agent is used in the dry composition is present in the range of 0.001 to 5.5 wt% by weight of the P0000416 CPL

[0120] 11 dry composition, more preferably in the range of 0.01 to 5 wt% by weight of the dry composition, further preferably in the range of 0.02 to 4.8 wt% by weight of the dry composition and most preferably in the range of 0.03 to 4.5 wt% by weight of the dry composition.

[0121] It is preferred that the chelating agent in the dry composition is present at least in 0.001wt%,

[0122] 5 more preferably at least 0.01 wt%, further preferably at least 0.02 wt% and most preferably at least 0.03 wt% by weight of the dry composition.

[0123] It is preferred that the chelating agent in the dry composition is present at most in 5.5 wt%, more preferably at most 5 wt%, further preferably at most 4.8 wt% and most preferably at most 4.5 wt% by weight of the dry composition.

[0124] The preferred chelating agents are as follows (names followed by their abbreviation in parenthesis): Ethylene Diamine Tetra Acetic acid (EDTA), Disodium Ethylene Diamine Tetra Acetic acid (Disodium EDTA), Diethylene Triamine Penta Acetic acid (DTPA), Ethane-1 - hydroxy-1 ,1-diphosphonate (EHDP), Ethylene Diamine-N,N'-Disuccinate (EDDS), Nitrilo Triacetic Acid (NTA), Sodium Imino Disuccinate (IDS), Ethylene Glycol-bis-(2-aminoethyl)-

[0125] 15 N,N,N', N'-Tetra Acetic acid (EGTA), Methyl Glycine Diacetic Acid (MGDA), N-(2-hydroxyethyl) Ethylene Diamine N,N',N'-Thacetic acid) (HEDTA), Ethylene Diamine Tetra Methylene Phosphonic acid (EDTMP), Diethylene Thamine-Penta-Methylene Phosphonic acid (DTPMP), Glutamic acid-N,N-Diacetic Acid (GLDA), Cyclohexane-1 ,2-Diamine-N,N,N',N'-Tetra-Acetic Acid (CDTA), 1 ,3-Propylenediamine Tetra-Acetic Acid (PDTA), Ethylene Diamine Triacetic Acid

[0126] 20 (EDTA), L-hydroxy Imino Disuccinic acid (L-IDS), Trisodium N-Carboxyethyl Imino Succinate (GEIS), Citric Acid, Sodium Thpolyphosphate (STP), Thethylene Tetramine Hexaacetic Acid (TTHA). Other preferred chelating agents are Trisodium Ethylene Diamine Disuccinate, Tetra- sodium-lmino disuccinate, Glutamic acid-N,N diacetic acid tetra sodium salt, 2-hydroxyethyl iminodiacetic acid, Sodium salt (disodium ethanol diglycinate), Tetrasodium 3-hydroxy-2,2 imino disuccinate, Trisodium methylglycine diacetic acid, L- Aspartate-N,N-diacetic acid tetrasodium salt. The more preferred chelating agents are salt of Ethylene Diamine Tetra Acetic acid (EDTA) and salt of Diethylene Thamine Penta Acetic acid (DTPA). Preferred salts of EDTA are disodium Ethylene Diamine Tetra Acetic acid and tetrasodium Ethylene Diamine Tetra Acetic acid. Preferred salt of DTPA is the pentasodium Diethylene Thamine Penta Acetic acid.

[0127] 30 The salt form is preferred over the acid form, as addition of the chelating agents in the acid form would bring about a corresponding decrease in pH, which is not desirable. P0000416 CPL

[0128] 12

[0129] It is most preferred that the chelating agent suitable for the compositions of the present invention are selected from the group of Ethylene Diamine Tetra Acetic acid (EDTA), or Diethylene Triamine Penta Acetic acid (DTPA), their derivatives and combinations, mixtures thereof. The EDTA derivative is selected from tetrasodium EDTA, trisodium EDTA, disodium

[0130] 5 EDTA, and combinations thereof. The DTPA derivative is selected from tetrasodium DTPA, trisodium DTPA, disodium DTPA, and combinations thereof.

[0131] Preservative

[0132] The present invention may comprise a preservative. It is preferred that the preservative in the dry composition is present in the range of 0.001 to 5.5 wt% by weight of the dry composition, more preferably in the range of 0.01 to 5 wt% by weight of the dry composition, further preferably in the range of 0.05 to 4.8 wt% by weight of the dry composition and most preferably in the range of 0.1 to 4.5 wt% by weight of the dry composition.

[0133] It is preferred that the preservative in the dry composition is present in at least 0.001wt%, more preferably at least 0.01 wt%, further preferably at least 0.02 wt% and most preferably in at least

[0134] 15 0.03 wt% by weight of the dry composition.

[0135] It is preferred that the preservative in the dry composition is present in at most 5.5 wt%, more preferably at most 5 wt%, further preferably at most 4.8 wt% and most preferably in at most 4.5 wt% by weight of the dry composition.

[0136] Very useful examples of the preservatives suitable for the compositions of the present

[0137] 20 inventions, but are not limited to, chlorite components, sorbic acid components and mixtures thereof.

[0138] Specific examples of chlorite components useful as preservatives in accordance with the present invention include stabilized chlorine dioxide (SCD), metal chlorites, such as alkali metal and alkaline earth metal chlorites, and the like and mixtures thereof. Technical grade (or USP grade) sodium chlorite is a very useful preservative component. The exact chemical composition of many chlorite components, for example, SCD, is not completely understood.

[0139] Specific examples of sorbic acid components useful as preservatives in accordance with the present invention include sorbic acid itself, as well as pharmaceutically and / or ophthalmically acceptable sorbic acid derivatives and mixture thereof. Useful sorbic acid components include,

[0140] 30 but are not limited to, metal sorbates, such as alkali metal and alkaline earth metal sorbates, and the like and mixtures thereof. P0000416 CPL

[0141] 13

[0142] Other preferred preservatives include but not limited to those commonly used in cosmetics, such as dibromdicyanobutane (2-bromo-2-bromomethylglutarodinitrile), phenoxyethanol, 3-lod- 2-propinylbutylcarbamate, 2-bromo-2-nitro-propane-1 , 3-diol, imidazolidinyl hamstoff, 5-chloro- 2-methyl-4-isothiazolin-3-one, 2-chloroacetamide, benzalkonium chloride, benzyl alcohol.'

[0143] 5 It is particularly preferred according to the invention if sodium benzoate, sodium salicylate, methyldibromoglutaronitrile and I or phenoxyethanol are used as preservatives.

[0144] Conditioning Agent

[0145] The compositions of this invention comprises a conditioning agent to enhance conditioning performance.

[0146] The water-insoluble conditioning agent may include non-silicone conditioning agent comprising non-silicone oily or fatty materials such as hydrocarbon oils, fatty esters and mixtures thereof. Preferably, the conditioning agent is emulsified silicone oil.

[0147] Suitable silicones include polydiorganosiloxanes, in particular polydimethylsiloxanes which have the CTFA designation dimethicone. Also suitable for use in compositions of this invention

[0148] 15 (particularly shampoos and conditioners) are polydimethyl siloxanes having hydroxyl end groups, which have the CTFA designation dimethiconol. Also suitable for use in compositions of this invention are silicone gums having a slight degree of cross-linking, as are described for example in WO 96 / 31188. Preferably, the silicone oil comprises dimethicone, dimethiconol or a mixture thereof.

[0149] Suitable emulsified silicones for use in the compositions of this invention are available as preformed silicone emulsions from suppliers of silicones such as Dow Corning and GE silicones. The use of such pre-formed silicone emulsions is preferred for ease of processing and control of silicone particle size. Such pre-formed silicone emulsions will typically additionally comprise a suitable emulsifier, and may be prepared by a chemical emulsification process such as

[0150] 25 emulsion polymerisation, or by mechanical emulsification using a high shear mixer.

[0151] Examples of suitable pre-formed silicone emulsions include DC1785, DC1788, DC7128, all available from Dow Corning. These are emulsions of dimethiconol / dimethicone.

[0152] Another class of silicones which may be used are functionalized silicones such as amino functional silicones, meaning a silicone containing at least one primary, secondary or tertiary P0000416 CPL

[0153] 14 amine group, or a quaternary ammonium group. Examples of suitable amino functional silicones include polysiloxanes having the CTFA designation "amodimethicone".

[0154] Silicone emulsion droplets are blended with certain types of surface active block polymers of a high molecular weight to form silicone emulsions, as described for example in WO03 / 094874.

[0155] 5 One preferred form of the surface active block polymer having polyoxypropylene and polyoxyethylene groups as the hydrophobic and hydrophilic part respectively has formula I and has the CTFA designation poloxamer, known commercially under the trade name "Pluronic" from BASF.

[0156] I) HO(CH2CH2O)x(CH(CH3)CH2O)y(CH2CH2O)x H

[0157] Suitably, the mean value of x in formula I is 4 or more, preferably 8 or more, more preferably 25 or more, yet more preferably 50 or more and most preferably 80 or more. The mean value of x is typically no greater than 200. Suitably, the mean value of y is 25 or more, preferably 35 or more, more preferably 45 or more and most preferably 60 or more. The mean value of y is typically no greater than 100.

[0158] 15 Another preferred form of the surface active block polymer is according to formula II and has the CTFA designation Poloxamine. Those are commercially available under the trade name "Tetronic" from BASF.

[0159] II) (HO(CH2CH2O)a(CH(CH3)CH2O)b)2-N-CH2-CH2-N-((OCH2CH(CH3))b(OCH2CH2)a OH)2

[0160] Suitably, the mean value of a is 2 or more, preferably 4 or more, more preferably 8 or more, even more preferably 25 or more and most preferably 40 or more. The mean value of a is typically no greater than 200. The mean value of b is suitably 6 or more, preferably 9 or more, more preferably 11 or more and most preferably 15 or more. The mean value of b is typically no greater than 50.

[0161] The surface active block polymer is poloxamer and / or poloxamine, more preferably, the surface

[0162] 25 active block polymer is poloxamer.

[0163] Preferably, the surface active block polymer is blended with dimethicone. The weight ratio of dimethicone to surface active block polymer in the blend is preferably in the range from 2:1 to 200:1, more preferably from 5:1 to 50:1, even more preferably from 10:1 to 40:1, most preferably from 15:1 to 30: 1. P0000416 CPL

[0164] 15

[0165] The conditioning agent is generally present in the dry composition of this invention in an amount from 0.01 to 10%, preferably from 0.05 to 10%, more preferably from 0.1 to 8%, most preferably from 0.5 to 5%, based on the total weight of the dry composition and including all ranges subsumed therein.

[0166] 5 In the composition of the present invention, the conditioning agent comprises cationic polymer. In a preferred embodiment the composition according to the invention comprises a cationic deposition polymer.

[0167] It is preferred that the conditioning agent comprises at least 10 wt% of cationic polymer, more preferably in the order of preference 12 wt%, 30 wt%, 40 wt%, 50 wt%, 60 wt%, 70 wt%, 80 wt% and most preferably 90 wt%. In a highly preferred aspect the conditioning agent is cationic polymer.

[0168] The cationic polymer is generally present in the dry composition of this invention in an amount from 0.01 to 10%, preferably from 0.05 to 10%, more preferably from 0.1 to 8%, most preferably from 0.5 to 6.5%, based on the total weight of the dry composition and including all ranges

[0169] 15 subsumed therein.

[0170] Suitable cationic deposition aid polymers may be homopolymers which are cationically substituted or may be formed from two or more types of monomers. The weight average (Mw) molecular weight of the polymers will generally be between 100,000 and 5 million daltons. The polymers will have cationic nitrogen containing groups such as quaternary ammonium or

[0171] 20 protonated amino groups, or a mixture thereof. If the molecular weight of the polymer is too low, then the conditioning effect is poor. If too high, then there may be problems of high extensional viscosity leading to stringiness of the composition when it is poured.

[0172] The cationic nitrogen-containing group will generally be present as a substituent on a fraction of the total monomer units of the cationic polymer. Thus, when the polymer is not a homopolymer

[0173] 25 it can contain spacer non-cationic monomer units. Such polymers are described in the CTFA Cosmetic Ingredient Directory, 3rd edition. The ratio of the cationic to non-cationic monomer units is selected to give polymers having a cationic charge density in the required range, which is generally from 0.01 to 5.0 meq / gm. The cationic charge density of the polymer is suitably determined via the Kjeldahl method as described in the US Pharmacopoeia under chemical

[0174] 30 tests for nitrogen determination. P0000416 CPL

[0175] 16

[0176] Suitable cationic polymers include, for example, copolymers of vinyl monomers having cationic amine or quaternary ammonium functionalities with water soluble spacer monomers such as (meth)acrylamide, alkyl and dialkyl (meth)acrylamides, alkyl (meth)acrylate, vinyl caprolactone and vinyl pyrrolidine. The alkyl and dialkyl substituted monomers preferably have C1-C7 alkyl

[0177] 5 groups, more preferably C1-3 alkyl groups. Other suitable spacers include vinyl esters, vinyl alcohol, maleic anhydride, propylene glycol and ethylene glycol. The cationic amines can be primary, secondary or tertiary amines, depending upon the particular species and the pH of the composition. In general secondary and tertiary amines, especially tertiary, are preferred.

[0178] Amine substituted vinyl monomers and amines can be polymerised in the amine form and then

[0179] 10 converted to ammonium by quaternization. The cationic polymers can comprise mixtures of monomer units derived from amine- and / or quaternary ammonium-substituted monomer and / or compatible spacer monomers.

[0180] Suitable cationic polymers include, for example:- cationic diallyl quaternary ammonium- containing polymers including, for example, dimethyldiallylammonium chloride homopolymer and copolymers of acrylamide and dimethyldiallylammonium chloride, referred to in the industry (CTFA) as Polyquaternium 6 and Polyquaternium 7, respectively;- mineral acid salts of aminoalkyl esters of homo-and co-polymers of unsaturated carboxylic acids having from 3 to 5 carbon atoms, (as described in U.S. Patent 4,009,256); and cationic polyacrylamides(as described in WO95 / 22311).

[0181] 20 Other cationic polymers that can be used include cationic polysaccharide polymers, such as cationic cellulose derivatives, cationic starch derivatives, and cationic guar gum derivatives.

[0182] Cationic polysaccharide polymers suitable for use in compositions of the invention include monomers of the formula: wherein:

[0183] A— O— [R— N+(R1)(R2)(R3)X-],

[0184] A is an anhydroglucose residual group, such as a starch or cellulose anhydroglucose residual. R is an alkylene, oxyalkylene, polyoxyalkylene, or hydroxyalkylene group, or combination thereof. R1, R2 and R3 independently represent alkyl, aryl, alkylaryl, arylalkyl, alkoxyalkyl, or alkoxyaryl groups, each group containing up to about 18 carbon atoms.

[0185] The total number of carbon atoms for each cationic moiety (i.e. , the sum of carbon atoms in R1,

[0186] 30 R2 and R3) is preferably about 20 or less, and X is an anionic counterion. P0000416 CPL

[0187] 17

[0188] Another type of cationic cellulose includes the polymeric quaternary ammonium salts of hydroxyethyl cellulose, for example Polyquaternium-10 series from Dow Chemicals (Polymer JR125, Polymer LK, Polymer LR 400, Polymer JR 400, Polymer LR 30 M, Polymer JR 30M).

[0189] Also, another type of cationic cellulose includes the polymeric quaternary ammonium salts of

[0190] 5 hydroxyethyl cellulose reacted with lauryl dimethyl ammonium-substituted epoxide, referred to in the industry (CTFA) as Polyquaternium 24. These materials are available from the Amerchol Corporation, for instance under the tradename Polymer LM-200.

[0191] Other suitable cationic polysaccharide polymers include quaternary nitrogen- containing cellulose ethers (e.g. as described in U.S. Patent 3,962,418), and copolymers of etherified

[0192] 10 cellulose and starch (e.g. as described in U.S. Patent 3,958,581).

[0193] A particularly suitable type of cationic polysaccharide polymer that can be used is a cationic guar gum derivative, such as guar hydroxypropyltrimethylammonium chloride (commercially available from Solvay in their JAGUAR trademark series or Lambertti or Ashland).

[0194] Examples of such materials are JAGUAR C13S, JAGUAR C14, JAGUAR C15 and JAGUAR C17.

[0195] Most preferred cationic polymers are those having charge density in the range of 0.01-5 Meq / Gm.

[0196] Mixtures of any of the above cationic polymers may be used.

[0197] Fillers

[0198] 20 The dry composition of the present invention comprises filler, the filler comprising at least 70 wt% salt, preferably 75wt%, more preferably 80wt%, further more preferably 85wt%, even more preferably 90wt%, even further more preferably 95wt% and most preferably 98wt% of salt of the total weight of filler, wherein the salt is selected from the group of sodium, potassium salts of chloride, sulfate, carbonate, nitrate, acetate, gluconate, citrate; copper salts of sulfate, chloride,

[0199] 25 gluconate; zinc salts of chloride, sulfate, nitrate and acetate; ammonium chloride, ammonium sulfate and mixtures thereof.

[0200] It is highly preferred that filler is a salt selected from the group of sodium, potassium salts of chloride, sulfate, carbonate, nitrate, acetate, gluconate, citrate; copper salts of sulfate, chloride, P0000416 CPL

[0201] 18 gluconate; zinc salts of chloride, sulfate, nitrate and acetate; ammonium chloride, ammonium sulfate and mixtures thereof.

[0202] The term "fillers" should be understood as meaning solid particles that are insoluble in the medium of the composition, irrespective of the temperature at which the composition is

[0203] 5 manufactured.

[0204] The fillers are present in the composition according to the invention in a content of greater than or equal to 2% by weight, relative to the total weight of the composition, preferably greater than or equal to 5% by weight, better still greater than or equal to 10% by weight. The amount of fillers in the composition in accordance with the invention can range from 20% to 80% by weight, preferably from 25% to 75% by weight, and most preferably from 30% to 70% by weight of the dry composition.

[0205] The fillers may be colorless or white and inorganic or organic, of any physical shape (platelet, spherical or oblong) and of any crystallographic form (for example sheet, cubic, hexagonal, orthorhombic, etc.). The fillers may be porous or non-porous. Mention may be made, as fillers,

[0206] 15 of inorganic fillers, such as silica, clays, ceramic beads, calcium carbonate, titanium oxides, talc or magnesium silicate (particle size: 5 microns), sold under the name Luzenac 15 MOO® by the company Imerys, or talcs sold under the names Lyzenac 00 and Luzenac Pharma M by the company Imerys, kaolin or aluminum silicate, such as, for example, that sold under the name Kaolin Supreme® by Imerys, or sand with a particle size of between 1 and 1000 microns, or

[0207] 20 organic fillers, such as starches, in particular cornstarch, such as, for example, the product sold under the name Amidon de Mais B ® by the company Roquette, rice starch, Arrow root starch, and also derivatives thereof, Natpure Hollow Bead spheres sold by the company Sensient, celluloses such as the Cellulobead D-10 cellulose beads by the company Daitoka Seikogyo, colloidal silicas, sodium carbonate, Nylon microspheres, such as those sold under the name

[0208] 25 Orgasol 2002 UD NAT COS® by the company Atochem, micronized or nonmicronized plant powders, such as the fruit powders from Lessonia or bamboo powders, or rice grain husk powder, and mixtures thereof.

[0209] Salt

[0210] The compositions of the present invention comprise salt selected from the group of sodium,

[0211] 30 potassium salts of chloride, sulfate, carbonate, nitrate, acetate, gluconate, citrate; copper salts of sulfate, chloride, gluconate; zinc salts of chloride, sulfate, nitrate and acetate; ammonium chloride, ammonium sulfate and mixtures thereof. P0000416 CPL

[0212] 19

[0213] It is preferred that in the dry composition the salt is selected from the group of sodium chloride, sodium sulfate, sodium carbonate, sodium nitrate, sodium acetate, sodium gluconate, sodium citrate, potassium chloride, potassium sulfate, potassium carbonate, potassium nitrate, potassium acetate, potassium gluconate, potassium citrate, copper sulfate, copper chloride,

[0214] 5 copper gluconate, zinc chloride, zinc sulfate, zinc nitrate, zinc acetate, ammonium chloride, ammonium sulfate and mixtures thereof.

[0215] It is further preferred that in the dry composition the salt is selected from the group of sodium chloride, sodium sulfate, sodium gluconate, sodium citrate, potassium sulfate, potassium citrate, sodium carbonate, sodium nitrate, sodium acetate, potassium carbonate, potassium nitrate, potassium acetate, zinc sulfate, zinc acetate, ammonium sulfate and mixtures thereof.

[0216] It is most preferred that in the dry composition the salt is selected from the group of sodium chloride, sodium sulfate, sodium gluconate, sodium citrate, potassium sulfate, potassium citrate and mixtures thereof.

[0217] It is preferred that the filler of the present composition comprises at least 70 wt% salt with

[0218] 15 respect to the total weight of filler, more preferably at least 80 wt%, further more preferably at least 85 wt% and most preferably at least 90 wt% salt with respect to the total weight of filler. In a highly preferred aspect the filler in the dry composition is a salt and more preferably a salt selected from the group of sodium, potassium salts of chloride, sulfate, carbonate, nitrate, acetate, gluconate, citrate; copper salts of sulfate, chloride, gluconate; zinc salts of chloride,

[0219] 20 sulfate, nitrate and acetate; ammonium chloride, ammonium sulfate and mixtures thereof.

[0220] It is preferred that the present invention comprises a salt as a filler in a content of greater than or equal to 2% by weight, relative to the total weight of the composition, preferably greater than or equal to 5% by weight, better still greater than or equal to 10% by weight. The amount of salt in the composition in accordance with the invention can range from 20% to 80% by weight,

[0221] 25 preferably from 25% to 75% by weight, and most preferably from 30% to 70% by weight of the dry composition. It is preferable that the salt is selected from the group of sodium, potassium salts of chloride, sulfate, carbonate, nitrate, acetate, gluconate, citrate; copper salts of sulfate, chloride, gluconate; zinc salts of chloride, sulfate, nitrate and acetate; ammonium chloride, ammonium sulfate and mixtures thereof.

[0222] 30 It is preferred that the dry compositions of the present invention have salts selected from the group of sodium, potassium salts of chloride, sulfate, carbonate, nitrate, acetate, gluconate, citrate; copper salts of sulfate, chloride, gluconate; zinc salts of chloride, sulfate, nitrate and P0000416 CPL

[0223] 20 acetate; ammonium chloride, ammonium sulfate and mixtures thereof in the range of about 2 to 80 wt% by weight of the dry composition, more preferably 10 to 75 wt% and most preferably 20 to 65 wt% by weight of the dry composition.

[0224] It is preferred that the liquid compositions of the present invention have salts selected from the

[0225] 5 group of sodium, potassium salts of chloride, sulfate, carbonate, nitrate, acetate, gluconate, citrate; copper salts of sulfate, chloride, gluconate; zinc salts of chloride, sulfate, nitrate and acetate; ammonium chloride, ammonium sulfate and mixtures thereof in the range of about 1 to 60 wt% by weight of the dry composition, more preferably 5 to 50 wt% and most preferably 10 to 40 wt% by weight of the dry composition.

[0226] The preferred salt for the present invention is selected from the group of sodium chloride, sodium sulfate, sodium gluconate, sodium citrate, potassium sulfate, potassium citrate, sodium carbonate, sodium nitrate, sodium acetate, potassium carbonate, potassium nitrate, potassium acetate, zinc sulfate, zinc acetate, ammonium sulfate and mixtures thereof. It is most preferred that the salt is selected from the group of sodium chloride, sodium sulfate, sodium gluconate,

[0227] 15 sodium citrate, potassium sulfate, potassium citrate and mixtures thereof. pH modulator

[0228] The dry composition of the present invention may comprise a pH modulator having a pH in the range of 4 to 9. The pH modulator is present in the range of 0.01 to 30 wt% of the dry composition, more preferably 1 to 20 wt% and most preferably 2 to 15 wt% of the dry

[0229] 20 composition. The pH modulator may be selected from a group of compounds that are commonly used in the industry.

[0230] Antibacterial activity and antimicrobial agent

[0231] The cleansing compositions include an antimicrobial agent which preferably is an antibacterial agent. The agent is primarily responsible for antibacterial action. Suitable antibacterial agents include 2-hydroxy-4,2',4'-trichlorodiphenylether (DP300); 2,6-dimethyl-4-hydroxychlorobenzene (PCMX); 3,4,4'-trichlorocarbanilide (TCC); 3-trifluoromethyl-4,4'-dichlorocarbaniide (TFC); 2,2'- dihydroxy-3,3',5,5',6,6'-hexachlorophenylmethane; 2,2'-dihydroxy-3,3', 5,5'- tetrachlorodiphenylmethane; 2,2'-dihydroxy-3,3',dibromo-5,5'-dichlorodiphenylmethane; 2- hydroxy-4,4'-dichlorodiphenylether; 2-hydroxy-3,5',4-tribromodiphenlylether; and 1-hydroxyl-4-

[0232] 30 methyl-6-(2,4,4-trimethylpentyl)-2(1H)-pyridinone (Octopirox), thymol and terpeniol. Particularly preferred antibacterial agents are thymol and terpeniol, optimally used in combination. In P0000416 CPL

[0233] 21 preferred compositions, the content of thymol ranges from 0.05 to 5 wt%, more preferably 0.1 to 1 wt% and most preferably 0.1 to 0.4 wt%. Above the preferred range, the compositions may have a strong smell, which may not be preferred by some consumers. However, suitable strong masking agents like perfumes can be used to mask the strong odour of thymol or terpeniol. As

[0234] 5 an alternative to thymol; thyme oil or thyme extract may also be added. Thyme oil or thyme extract is obtained from the thyme plant. Thyme plant refers to a plant belonging be genus Thymus and includes but is not limited to Thymus vulgaris, Thymus zygis, Thymus satureoides, Thymus mastichina, Thymus broussonetti, Thymus maroccanus, Thymus pallidus, Thymus algeriensis, Thymus serpyllum, Thymus pulegoide, and Thymus citriodorus.

[0235] It is preferred that the inorganic carrier is at least one of titanium oxide, magnesium oxide, aluminium oxide, silicon oxide, calcium oxide, barium oxide, calcium hydroxyapatite, calcium carbonate, calcium magnesium carbonate, sheet silicate, zeolite, clay or bentonite. More preferably the inorganic carrier is composed of aggregates of nano plate like structures having width of 20 to 100 nm, preferably 40 to 60 nm. Further preferably the inorganic carrier is a

[0236] 15 porous material have a nano or micro-structured assembly. It is preferred that particle size of the inorganic carrier is 1 to 10 pm.

[0237] A particularly preferred inorganic carrier is calcium carbonate. Other preferred carriers are titanium oxide, magnesium hydroxide and zinc oxide.

[0238] Preferably the amount of oligodynamic metal comprised in the antimicrobial particulate material

[0239] 20 is from 0.1 to 10 wt% by weight of the particulate material. In such a case, the balance, more or less, is composed of the inorganic carrier. Suitable process conditions and stoichiometric amount of starting materials need to be employed to ensure that the antimicrobial particulate contains 0.1 to 10 wt% oligodynamic metal by weight of the particulate material. The process steps and conditions disclosed in W016020168 A1 (Unilever) could be, and preferably are used to prepare the composite antimicrobial particulate material.

[0240] The process for preparing a composite antimicrobial particulate material comprises the following steps:

[0241] An aqueous dispersion of a water-insoluble inorganic carrier of particle size in the range of 1 to 10 pm is prepared. The dispersion contains 1 to 5 wt% (by weight of the dispersion) of the

[0242] 30 carrier. P0000416 CPL

[0243] 22

[0244] Separately, an aqueous solution of a reducing agent is prepared. The concentration of the reducing agent in the solution is 10 to 30 wt%.

[0245] The dispersion and the solution are mixed. Thereafter, this mix is heated to 70°C to 90°C. At this stage, a water soluble salt of the oligodynamic metal is added to the heated mix.

[0246] 5 Preferably, the reducing agent is sodium acetate, sodium oxalate, trisodium citrate or disodium ethylene diamine tetra acetate.

[0247] It is particularly preferred that the oligodynamic metal is copper or silver, furthermore particularly it is silver. Gold is also an alternative but is less preferred in view of its price. It is preferred that the compositions in accordance with this invention comprise an amount of the composite antimicrobial particulate equivalent to 0.001 to 2 wt% of the oligodynamic metal. For example, if it is desired that the composition should contain 0.5 wt% silver (= 0.5 g silver in 100 g of the composition), then an amount of the composite particulate material which contains 0.5 g silver is included in the composition. This amount could vary depending on the solvent content in the particulate material.

[0248] 15 Silver is particularly preferred. In the ionic form it may exist as a salt or any compound in any applicable oxidation state. It is preferred that compositions in accordance with this invention comprise an amount of the composite antimicrobial particulate equivalent to 0.001 to 2 wt% of the oligodynamic metal. Where the metal is present in the form of a compound such as silver in the form of silver acetate; then an appropriate amount of the compound is included so that the

[0249] 20 active metal content is within the broad and preferred ranges as already indicated.

[0250] It is preferred that the metal, e.g. silver is present in the form of a compound, e.g. silver (I) compound but may also be in the form of particles, e.g. nanoparticles of silver.

[0251] Silver(l) compounds are one or more water-soluble silver(l) compounds having silver ion solubility at least 1.0 x10'4mol / L (in water at 25°C). Silver ion solubility, as referred to herein, is a value derived from a solubility product (Ksp) in water at 25°C, a well known parameter that is reported in numerous sources. More particularly, silver ion solubility [Ag+], a value given in mol / L may be calculated using the formula:

[0252] [Ag+] = (Ksp •X)<1 / <x+1» , wherein Ksp is the solubility product of the compound of interest in water at 25°C, and x

[0253] 30 represents the number of moles of silver ion per mole of compound. It has been found that P0000416 CPL

[0254] 23

[0255] Silver(l) compounds having a silver ion solubility of at least 1 x 10-4mol / L in are suitable for use herein. Silver ion solubility values for a variety of silver compounds are given in Table 1:

[0256] TABLE 1

[0257] 5 It is preferred that when silver is present in the form of a compound, the compound selected from silver oxide, silver nitrate, silver acetate, silver sulfate, silver benzoate, silver salicylate, silver carbonate, silver citrate or silver phosphate. In particularly preferred compositions the silver(l) compound is silver oxide.

[0258] Thymol / Terpineol

[0259] 10 In addition to the composite antimicrobial particulate material, the compositions in accordance with the invention comprise 0.0001 to 5 wt% of at least one of thymol or terpineol.

[0260] It is preferred that the compositions in accordance with this invention comprise thymol and terpineol, i.e. the two in combination. In such cases, it is preferred that the w / w ratio of the amount of thymol to that of terpineol is 1:0.1 to 1 :10. More preferably the ratio is 1:0.5 to 1 :2.

[0261] 15 Where thymol is present alone or in combination with terpineol, it is preferred that amount of thymol is 0.01 to 2 wt%, more preferably 0.01 to 1 wt% and further more preferably 0.01 to 0.5 wt% and yet further most preferably 0.01 to 0.05 wt%. Thymol is efficacious at lower dosages therefore higher dosages may be used only if necessary. P0000416 CPL

[0262] 24

[0263] A drawback of thymol is its odour which may appear unpleasant to some individuals but such higher dosages may be used in compositions where sensorial aspects are not important or in the case of the compositions which permit the inclusion of suitable odour masking agents. It is preferred that the thymol is used in purified form.

[0264] 5 As an alternative to thymol, use may be made of thyme oil or thyme extract comprising thymol, while ensuring that sufficient / desired amount of thymol is present in it. Thyme oil or thyme extract is obtained from the thyme plant. Thyme plant refers to a plant belonging be genus Thymus and includes but is not limited to the following species: Thymus vulgaris, Thymus zygis, Thymus satureoides, Thymus mastichina, Thymus broussonetti, Thymus maroccanus, Thymus

[0265] 10 pallidus, Thymus algeriensis, Thymus serpyllum, Thymus pulegoide, and Thymus citriodorus. The isomer of thymol (carvacrol) may also be used. Alternatively, but less preferably, any derivative of thymol which has similar properties of thymol may also preferably be used.

[0266] In addition to or instead of thymol, the compositions in accordance with this invention comprise terpineol. Where terpineol is present alone or in combination with thymol, it is preferred that amount of terpineol is 0.01 to 2 wt%, more preferably 0.01 to 1 wt% and further more preferably 0.01 to 0.5 wt% and yet further most preferably 0.01 to 0.05 wt%. Terpineol is efficacious at lower dosages therefore higher dosages may be used only if necessary.

[0267] A drawback of terpineol, like thymol, is its odour which may appear unpleasant to some

[0268] 20 individuals but such higher dosages may be used in compositions where sensorial aspects are not important or in the case of the compositions which permit the inclusion of suitable odour masking agents. It is preferred that the terpineol is used in purified form.

[0269] The structure of a terpineol is given below: P0000416 CPL

[0270] 25

[0271] Alternatively, but less preferably, pine oil comprising desired amount of terpineol may be used instead of purified terpineol.

[0272] Oligodynamic metals, especially silver, are able to act largely due to its ability to affect the

[0273] 5 permeability of bacterial membranes and generate reactive oxygen species. Silver ions are considered as the active species. Therefore, if sufficient number of such ions are generated quickly and efficiently, it is possible to bring about rapid reduction in the viable bacterial count of surfaces which are contaminated therewith.

[0274] The oligodynamic metal, e.g. silver embedded in the inorganic carrier together with thymol (or terpineol or both) provides faster-acting antibacterial effect whilst permitting significant reduction in the oligodynamic metal content that would otherwise have been necessary. The compositions in accordance with this invention are effective against at least one of Gram-positive and Gramnegative bacteria. More preferred compositions provide broad-spectrum antibacterial action which means action against Gram-positive and Gram-negative bacteria.

[0275] 15 Without wishing to be bound by theory, it is believed that the inorganic carrier ensures the release of an efficacious amount of ions of the oligodynamic metal. Such ions, together with at least one of thymol and terpineol, and preferably the two together; interact synergistically to provide 1 to 5 log reduction in bacterial count of an animate or inanimate surface at a contact time of 10 to 30 seconds.

[0276] Hair benefit actives

[0277] The present invention may comprise hair benefit actives such as anti-dandruff actives, hair growth actives, anti-hair fall actives, herbal and natural extracts, essential oils, anti-itch actives, conditioning actives etc.

[0278] The present invention may include an anti-dandruff agent. Anti-dandruff agents when present in

[0279] 25 the hair care composition are compounds that are active against dandruff and are typically antimicrobial agents and preferably antifungal agents. Suitable anti-dandruff agents that may be P0000416 CPL

[0280] 26 used in this invention are selected from piroctone olamine (Octopirox), selenium sulfide and mixtures thereof. In a preferred embodiment, the antidandruff agent is piroctone olamine.

[0281] Suitable anti-dandruff agents that may be used in this invention are selected from piroctone olamine (Octopirox), ziziphus extract, azole based anti-fungal agents, selenium sulfide and

[0282] 5 mixtures thereof. The preferred azole based anti-fungal agent is ketoconazole, climbazole or mixtures thereof. Preferably, the anti-dandruff agent is selected from piroctone olamine, ziziphus extract, climbazole and mixtures thereof. In an especially preferred embodiment, the anti-dandruff agent is piroctone olamine and ziziphus extract.

[0283] Typically, when the hair care composition of the invention comprises an anti-dandruff agent, it is usually comprised in an amount of from 0.01 to 5 wt %, more preferably from 0.01 to 3 percent, more preferably still from 0.05 to 2 wt %, and most preferably from 0.05 to 1.5 wt %, based on total weight of the hair care composition and including all ranges subsumed therein.

[0284] Hair growth stimulant I anti-hair fall actives may be contained in the composition of the invention. The composition of the present invention may contain various active components and

[0285] 15 supplementary components normally used in topical preparations in an amount that does not harm the effect of the present invention. Examples of these components include fillers, vasodilators (carpronium chloride, benzyl nicotinate, swertia herb extract, panax ginseng extract, capsicum tincture, and the like), antihistamines (isothipendyl hydrochloride and the like), anti-inflammatory agents (guaiazulene and the like), keratolytics (urea, salicylic acid, and

[0286] 20 the like), antimicrobial agents (chlorhexidine gluconate, isopropylmethylphenol, quaternary ammonium salts, piroctone olamine, and the like), humectants (sodium hyaluronate, chondroitin sulfuric acid, and the like), zinc salts (zinc sulfate, zinc gluconate), extracts of animals and plants (Taxus cuspidata, Paeonia suffruticosa, Glycyrrhisa uralensis, Hypericum erectum, aconite root, Eriobotrya japonica, Artemisia capillaris, Symphytum officinale, Angelica keiskei, Crocus sativus, Gardeniae fructus, Rosmarinus officinalis, Salvia officinalis, Saussurea lappa, Aristolochia debilis, Lupuli strobilus, placenta, and the like), vitamins (retinol acetate, pyridoxine hydrochloride, ascorbic acid, thiamin nitrate, cyanocobalamin, biotin, and the like), anti-oxidants (dibutylhydroxytoluene, sodium pyrosulfite, tocopherol, sodium edetate, ascorbic acid, isopropyl gallate, and the like), solubilizers (diisopropyl adipate, isopropyl myristate, vegetable oils such

[0287] 30 as grape seed oil, animal oils, alkyl glyceryl ethers, hydrocarbons, and the like), metabolic activators (panthenol and the like), gelling agents (water-soluble high molecular compounds and the like), adhesives, perfumes, refrigerants (mentha oil, camphor, and the like), dyes and the like. P0000416 CPL

[0288] 27

[0289] Other Ingredients

[0290] Preferably, the composition comprises perfume.

[0291] Preferably, the composition comprises a co-solvent for the perfume. Co-solvents prevent the scattering of light particles that occurs in the composition and thus maintain the transparency of

[0292] 5 the composition. Preferred co-solvents include alcohols, especially ethanol.

[0293] Preferably, the composition comprises 0.01 to 5 wt%, more preferably 0.01 to 2wt%, most preferably 0.8 to 1.2% by weight of thickener. This provides the best rheological properties of the composition. Suitable thickeners are selected from the group of cellulose based polymers, acrylate based polymers and more preferably acrylate based polymers,. Most preferably the acrylate based polymers are acrylate cross polymers.

[0294] Preferably, the composition comprises a co-surfactant I co-solvent for the perfume. Cosurfactants also prevent the formulation of light scattering particles and thus maintain the transparency of the composition. Preferred co-surfactants include cremophore as well as Eumulgin HPS, which is composed of coceth-7 and PPG-1 PEG-9 Lauryl glycol ether and PEG-

[0295] 15 40 hydrogenated castor oil.

[0296] Preferably, such co-surfactants are included from 0.1 to 3% by weight. Preferably from 1 to 1.5% by weight.

[0297] Preferably, the composition comprises a cationic surfactant. Cationic surfactants provide a hair conditioning benefit.

[0298] Preferably, the composition comprises a fatty material selected from fatty alcohols, fatty acids, fatty amides and fatty esters. Fatty materials provide a hair conditioning benefit.

[0299] Preferably the composition comprises a preservative in the range of 0.1 to 2 wt% by weight of the composition. The preservative can be chosen such that it doesn’t affect the transparency of the composition. Preferred preservatives for the purpose of this invention may be selected from

[0300] 25 the group of benzoates, phenoxylates, salicylates, chloride based, aromatic ethers etc. and the likes.

[0301] Compositions according to the present invention may also include some of the known ingredients used in the conditioning sera, which do not impair the overall transparency of the P0000416 CPL

[0302] 28 composition. Typical of such ingredients are water miscible silicones, such as certain aminosilicones or silicone polyethers.

[0303] Liquid Formulation

[0304] According to the second aspect, the present invention provides a liquid cleansing composition

[0305] 5 comprising: 0.1 to 30 wt% of surfactant; 0.01 to 10 wt% of conditioning agent comprising cationic polymer; 2 to 60 wt% of a salt selected from the group of alkali metal salts of sulfate, carbonate, chloride, citrate, nitrate, gluconate and acetate; alkali earth metal salts of sulfate, chloride, citrate, nitrate, gluconate, acetate, and transition metal salts of sulfate, chloride, citrate, nitrate, gluconate, and acetate; and 55 to 97 wt% liquid carrier by weight of the liquid formulation.

[0306] In the liquid formulation the surfactant is present in the range of 0.1 to 30 wt%, more preferably in the range of 1 to 25 wt% and most preferably 2 to 20 wt% by weight of the liquid formulation. It is preferred that the surfactant is an anionic surfactant.

[0307] It is preferred that the liquid formulation further comprises a co-surfactant, present in the range

[0308] 15 of 0 to 2 wt%, more preferably in the range of 0.1 to 1.5 wt% and most preferably 0.3 to 1 wt% by weight of the liquid formulation.

[0309] In the liquid formulation the chelating agent may be present, when it is present it is in the range of 0.01 to 0.6 wt%, more preferably in the range of 0.05 to 0.5 wt% and most preferably 0.1 to 0.5 wt% by weight of the liquid formulation. It is preferable that the chelating agent is selected

[0310] 20 from the group of Ethylene Diamine Tetra Acetic acid (EDTA), Disodium EDTA, Diethylene Triamine Penta Acetic acid (DTPA), their derivatives, combinations and mixtures thereof.

[0311] In the liquid formulation the preservative may be present, when it is present it is in the range of 0.01 to 2 wt%, more preferably in the range of 0.1 to 2 wt% and most preferably 0.5 to 1 wt% by weight of the liquid formulation. It is most preferable that the preservative is selected from sodium benzoate, benzoic acid, potassiumsorbate, methylparaben, ethylparaben, propylparaben, butylparaben and heptyl paraben, combinations or mixtures thereof.

[0312] In the liquid formulation the conditioning agent is present in the range of 0.01 to 10 wt%, more preferably in the range of 0.05 to 5 wt% and most preferably 0.1 to 3 wt% by weight of the liquid formulation. It is preferred that in the liquid composition the conditioning agent is a cationic

[0313] 30 polymer. P0000416 CPL

[0314] 29

[0315] In the liquid formulation the cationic polymer is present in the range of 0.01 to 10 wt% , more preferably in the range of 0.05 to 5 wt% and most preferably 0.1 to 3 wt% by weight of the liquid formulation. It is preferred that in the liquid composition the cationic polymer is selected from the cationic polymers with charge density in the range of 0.01 to 5 meq / gm.

[0316] 5 The liquid composition of the present invention may comprise a pH modulator having a pH in the range of 4 to 9. The pH modulator is present in an amount in the range of 0.001 to 30 wt%, more preferably 0.01 to 20 wt% and most preferably 0.1 to 15 wt% of the liquid composition. The pH modulator may be selected from a group of compounds that are commonly used in the industry such as citric acid or sodium hydroxide and the likes.

[0317] The liquid carrier could be any suitable liquid carrier which allows dissolution of the components of the anhydrous composition to form a stable flowable composition. It is most preferred that the liquid carrier is an inert liquid carrier such as water.

[0318] It is preferred that the pH of the resultant liquid formulation made from reconstitution of the dry compositions of the present invention is in the range of 5.5 to 7 pH and more preferably in the

[0319] 15 range of 6 to 7 pH.

[0320] The viscosity of the liquid formulations of the present invention is in the range of 500 to 4000 cps, more preferably 1000 to 3000 cps and most preferably between 1500 to 2500 cps.

[0321] Use

[0322] The present invention provides use of dry compositions according to the first aspect to obtain a liquid formulation according to the second aspect, preferably the liquid formulation is obtained by reconstituting the dry composition with a suitable liquid carrier.

[0323] The present invention also provides use of the liquid formulation made with the dry compositions of the present invention as a cleansing composition. More preferably the cleansing composition is a personal wash cleansing composition. Most preferably the liquid

[0324] 25 cleansing composition is a hair personal wash cleansing composition such as a shampoo composition.

[0325] Mode of use

[0326] The dry composition of the present invention may be used upon reconstitution or dilution with a suitable liquid carrier, preferably the liquid carrier is an inert liquid carrier such as water. The P0000416 CPL

[0327] 30 reconstitution can be done directly at the site of application such as skin, hair, scalp. The reconstitution can also be done before application to the site, in a hand, another surface or in a container.

[0328] Method

[0329] 5 The dry composition of the present invention is prepared using the process comprising: taking 0.1 to 30 wt% of surfactant comprising at least 10 wt% of anionic surfactant with respect to the total weight of surfactant; 0.01 to 10 wt % of a conditioning agent comprising a cationic polymer; and 2 to 60 wt% of a salt selected from the group of sodium, potassium salts of chloride, sulfate, carbonate, nitrate, acetate, gluconate, citrate; copper salts of sulfate, chloride, gluconate; zinc salts of chloride, sulfate, nitrate and acetate; ammonium chloride, ammonium sulfate and mixtures thereof and diluting it with 55 to 97 wt% of liquid carrier. It is preferred that the dilution factor is in the range of 1:0.1 to 1 :50 to obtain the liquid formulation.

[0330] It is preferred that to this mixture a benefit agent is added. It is preferred that the benefit agent is selected from the group of but not limited to an emollient, a hair care agent, scalp care agent, a

[0331] 15 pharmaceutical benefit agent, an antibacterial agent, combinations and mixtures thereof.

[0332] The present invention also provides a method of making a liquid formulation from the dry composition according to the first aspect, the method comprising the steps of: taking the dry composition and a container and diluting the dry composition with a liquid carrier with a dilution factor in the range of 1:0.1 to 1 :50 to obtain the liquid formulation. It is more preferred that the

[0333] 20 dilution factor is in the range of 1 :0.1 to 1:20 and most preferably 1 :0.1 to 1:15.

[0334] It is preferred that the liquid carrier is an inert liquid carrier such as water and more preferably clean potable water.

[0335] It is preferred that when the dry composition is packaged in the form of a sachet, such sachet may opened and poured into a container for reconstituting the dry composition to form a stable liquid cleansing formulation or reconstituted directly at the site of application. It is preferred that the container is a bottle and most preferred is a bottle with a dispenser such as pump bottle. The bottle may first be filled with the liquid carrier such as water and then the dry composition added or vice versa. It is preferred that after the addition of the dry composition and the liquid carrier to a suitable container, the container is closed and shaken. It is preferred that the newly

[0336] 30 reconstituted liquid formulation is allowed to rest for some time. P0000416 CPL

[0337] 31

[0338] Format

[0339] The present invention also provides dry compositions in different formats such as loose powder or encapsulated form or in solid state such as tablets, cubes and the likes by known conventionally in the industry.

[0340] 5 The invention provides a unit dose formulation suitable for personal cleansing, more preferably for hair cleansing composition. The unit dose formulation comprising: a. 10 to 80 wt% of surfactant comprising at least 10 wt% of anionic surfactant with respect to the total weight of surfactant; b. 0.01 to 10 wt% of conditioning agent comprising cationic polymer; c. 2 to 60 wt% of a salt selected from the group of sodium, potassium salts of chloride, sulfate, carbonate, nitrate, acetate, gluconate, citrate; copper salts of sulfate, chloride, gluconate; zinc salts of chloride, sulfate, nitrate and acetate; ammonium chloride, ammonium sulfate and mixtures thereof; and d. 1 to 20% binding agents.

[0341] 15 When the binding agents are used to prepare the dry compositions of the present invention, the binding agents may be any that are conventionally used in the industry to prepare tablets such as dry tablet binders. These are added to the powder blend, either after a wet granulation step or as part of a direct compression (DC) formula. Examples of dry tablet binders include cellulose, Polyvinyl Pyrrolidone (PVP), Hydroxy Propyl Methyl Cellulose (HPMC), Sodium

[0342] 20 Carboxy Methyl Cellulose, Polyethylene Glycol (PEG), and Methyl Cellulose. Solution tablet binders are used in wet granulation processes. These are dissolved in a different solvent such as water or isopropyl alcohol. Examples of tablet binders include cellulose, gelatin, cellulose derivatives, polyvinyl pyrrolidone, starch, sucrose, mannitol, polyethylene glycol, and liquid glucose, etc.

[0343] The composition according to the present invention may be packaged in any suitable packaging, for example a sachet, blister pack, containers such as bottle, tub, pot, spray container, unit dose pack etc.

[0344] The invention will now be illustrated by means of the following non-limiting examples.

[0345] Examples

[0346] 30 While this invention has been described with respect to particular embodiments thereof, it is apparent that numerous other forms and modifications of the invention will be obvious to those P0000416 CPL

[0347] 32 skilled in the art. The appended claims and this invention generally should be construed to cover all such obvious forms and modifications which are within the true spirit and scope of the present invention.

[0348] Example 1

[0349] 5 Preparation of formulations:

[0350] Weigh the raw materials as per required quantity. Add surfactant, cationic polymer as the conditioning agent, chelating agent, preservative, salt and mix until fully homogenised. Add the perfume into the bulk and mix well. Adjust the pH of the formulation.

[0351] The liquid formulation was formed by taking 1 :10 solution of powder concentrate shampoo in 10 water was prepared and stirred for 30 secs under a magnetic stirrer. The liquid formulations were observed visually for 60 secs to measure the extent of dissolution of the prototypes in water.

[0352] Table 1

[0353] Table 2 P0000416 CPL

[0354] 33

[0355] Table 3

[0356] Example 2

[0357] Different dry compositions E1 to E24 were prepared according to the methodology provided in 5 Example 1 with different salts as fillers as mentioned in Table 5 and 6 and subsequently reconstituted. Compositions E1 to E6 and E11 to E24 were prepared according to the present invention. Whereas compositions E7 to E10 were prepared with fillers conventionally used in the industry such as talc, calcium carbonate, corn starch and kaolin.

[0358] Table 4: P0000416 CPL

[0359] 34

[0360] Table 5

[0361] Table 6: Results of Table 4 and 5 P0000416 CPL

[0362] 35

[0363] The observations as presented in Table 5 clearly show that the compositions as prepared according to the present invention show good dissolution properties upon reconstitution. Whereas other fillers such as talc, calcium carbonate, corn starch and kaolin used in compositions E7 to E10 showed sedimentation within a few seconds to a minute.

[0364] 5 Example 3

[0365] Different compositions of anhydrous cleansing compositions prepared with different surfactant, conditioning ingredients and filler salt were prepared according to the methodology given above. A 1 :10 solution of anhydrous cleansing composition in water was prepared and stirred for 60 secs under a magnetic stirrer. The reconstituted compositions E25 to E32 were observed visually for 60 secs to measure the extent of dissolution of the compositions in water.

[0366] Compositions E25, E27 and E32 had same surfactant and conditioning agent but different salts - Zinc Sulfate Heptahydrate, Ammonium Chloride and Potassium Nitrate respectively. E11 and E12 had same salt and conditioning agent but differed in choice of surfactant- SLS+CAPB and SLS+DLSS respectively. E14 and E15 had same salt and surfactant but differed in conditioning

[0367] 15 agent being GHPTC + PQ10 and GHPTC + APTAC Copolymer respectively. Similarly E16 and E17 had same salt and surfactant but differed in conditioning agent being GHPTC + APTAC Copolymer and GHPTC + PQ10 respectively. E17 and E18 had had same salt and conditioning agent but differed in choice of surfactant- SLS+DLSS and SLS+CAPB respectively.

[0368] Table 7

[0369] 20

[0370] SLS- Sodium Lauryl Sulfate

[0371] CAPB- Cocamidopropyl Betaine

[0372] AOS- Alpha Olefin Sulfonate

[0373] DLSS- Disodium Lauryl Sulfosuccinate

[0374] 25 SCI- Sodium Cocoyl Isethionate

[0375] GHPTC- Guar Hydroxypropyl Trimonium Chloride

[0376] PQ10 - Polyquarternium-10

[0377] 30 APTAC Copolymer - Acrylamidopropyl-trimonium Chloride / Acrylamide Copolymer P0000416 CPL

[0378] 36

[0379] The observations as presented in Table 6 clearly show that the compositions as prepared according to the present invention show good dissolution properties upon reconstitution.

[0380] Therefore, it can be concluded that the present choice of salts has surprisingly resulted in quick liquid hair cleansing compositions from powdered dry compositions that are convenient to use

[0381] 5 even at the site of application because of their quick reconstitution properties and almost no sedimentation.

[0382] Example 4

[0383] Role of fillers: 1:10 solution of anhydrous cleansing composition in water was prepared and stirred for 60 secs under a magnetic stirrer. The dissolved prototypes were observed visually for

[0384] 10 60 secs to measure the extent of dissolution of prototypes in water. Compositions E33 to E36 were prepared with different fillers, keeping rest of the ingredients same.

[0385] Table 8

[0386] ***

[0387] E33- Sorbitol (23wt%) + Sodium Chloride (14wt%) + Hydrated Silica (5wt%) by weight of the composition E34- Sorbitol (23 wt%) + Sodium Chloride (14 wt%) + Zea Mays Corn Starch (5wt%) by weight of the composition

[0388] E35- Sodium Chloride (14 wt%) + Hydrated Silica (28 wt%) by weight of the composition

[0389] 20 E36- Sodium Chloride (14 wt%) + Zea Mays Corn Starch (28 wt%) by weight of the composition

[0390] It was observed that different fillers when used, which were out of the scope of the present invention, the resultant composition showed sedimentation.

[0391] It can therefore be concluded from the Examples above that the particular choice of filler salts

[0392] 25 were surprisingly successful in preparing stable liquid cleansing compositions from the anhydrous cleansing composition of the present invention.

Claims

P0000416 CPL37Claims1 An anhydrous cleansing composition comprising: i) 5 to 80 wt% of surfactant comprising at least 10 wt% of anionic surfactant with respect to the total weight of surfactant; ii) 0.01 to 10 wt% of conditioning agent comprising cationic polymer; and15 to 80 wt% of filler, the filler comprising at least 90 wt% salt with respect to the total weight of filler, wherein the salt is selected from the group of sodium, potassium salts of chloride, sulfate, carbonate, nitrate, acetate, gluconate, citrate; copper salts of sulfate, chloride, gluconate; zinc salts of chloride, sulfate, nitrate and acetate; ammonium chloride, ammonium sulfate and mixtures thereof.2 A composition according to claim 1, wherein the salt is selected from the group of sodium chloride, sodium sulfate, sodium gluconate, sodium citrate, potassium sulfate, potassium citrate, sodium carbonate, sodium nitrate, sodium acetate, potassium carbonate, potassium nitrate, potassium acetate, zinc sulfate, zinc acetate, ammonium sulfate and mixtures thereof.3 A composition according to claims 1 or 2, wherein the surfactant is non-soap surfactant.4 A composition according to any one of the preceding claims 1 to 3, wherein the surfactant is at least 70 wt% of anionic surfactant.5 A composition according to any one of the preceding claims 1 to 4, wherein the chelating agent is present in the range of 0.001 to 5.5 wt%.6 A composition according to any one of the preceding claims 1 to 5, wherein the chelating agent is selected from the group of Ethylene Diamine Tetra Acetic acid (EDTA), Disodium EDTA, Diethylene Triamine Penta Acetic acid (DTPA), their derivatives, combinations and mixtures thereof.7 A composition according to any one of the preceding claims 1 to 6, wherein the preservative is present in the range of 0.001 to 5.5 wt% of the dry composition.8 A composition according to any one of the preceding claims 1 to 7, wherein the preservative is benzoic acid or derivative, paraben derivative, or a sorbate derivative or mixtures or combinations thereof.P0000416 CPL389 A composition according to any one of the preceding claims 1 to 8, wherein the preservative is selected from sodium benzoate, benzoic acid, potassium sorbate, methylparaben, ethylparaben, propylparaben, butylparaben and heptyl paraben, combinations or mixtures thereof.10 A composition according to any one of the preceding claims 1 to 9, wherein the conditioning agent is a cationic polymer having charge density in the range of 0.01 to 5 meq / gm.11 A composition according to any one of the preceding claims 1 to 10, wherein the cationic polymer is in the range of 0.01 to 10 wt% of the dry composition.12 A composition according to any one of the preceding claims 1 to 11 , wherein the composition comprises a pH modulator having a pH in the range of 4 to 9.13 An aqueous formulation obtained by reconstituting the anhydrous composition according to any one of the preceding claims 1 to 12 with water, the aqueous composition comprising: a. 0.1 to 30 wt% of surfactant; b. 0.01 to 10 wt% of conditioning agent comprising cationic polymer; c. 2 to 60 wt% of filler, the filler comprising at least 90 wt% salt selected from the group of sodium, potassium salts of chloride, sulfate, carbonate, nitrate, acetate, gluconate, citrate; copper salts of sulfate, chloride, gluconate; zinc salts of chloride, sulfate, nitrate and acetate; ammonium chloride, ammonium sulfate and mixtures thereof; d. 55 to 97 wt% of water.14 A method of making an aqueous formulation from the anhydrous composition according to any one of the preceding claims 1 to 12, the method comprising the steps of, taking the anhydrous composition and diluting the anhydrous composition with water with a dilution factor in the range of 1 :0.1 to 1:50 to obtain the aqueous formulation.15 Use of a anhydrous composition according to any one of the preceding claims 1 to 12 to obtain an aqueous formulation according to claim 13.

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