Cleansing composition and article

Abstract

A cleansing composition comprises one or more biosurfactants and one or more taurate surfactants. The biosurfactants may be selected from a glycolipid e.g. sophorolipids, a lipopeptide or a phospholi

Description

Field The invention relates to a cleansing composition comprising one or more biosurfactants and one or more taurate surfactants, to a cleansing article comprising the composition and to methods and uses of such compositions and articles, preferably in the fields of household or personal care. Background Cleansing compositions are required to effectively clean soil from surfaces for example skin, hair and household surfaces. Many cleansing compositions comprise non-aqueous solvents and harsh surfactants, which are undesirable due to their impact on human skin. The impact of detergents on the environment is also a growing concern among consumers. It is therefore desirable to provide cleansing compositions that are effective at removing soils (especially hard to remove soils), whilst being mild and environmentally friendly. Aqueous cleansing compositions which are effective at low concentrations of surfactant, such as those referred to as micellar water are of particular interest in personal care applications. These are used primarily for removal of cosmetics, although may also find application as general cleansing compositions. Removal of cosmetics requires mildness in combination with effective detergency, for example to remove waterproof and / or oil-based cosmetics, such as mascara, from skin and hair. It is particularly important for cleansing compositions to be mild if they are to be applied to delicate facial skin e.g. adjacent to the eyes. In use, cleansing compositions may be applied to a substrate material prior to application to a surface to be cleaned. The cleansing composition may be applied to a substrate material at the point of use or may be pre-applied to a substrate material such that the cleansing composition is supplied as a component of a cleansing article. For example, a cleansing composition may be applied to a cloth (for example a face or body cloth) or a cotton wool pad at the point of use, or may be pre-applied, for example in the form of a wet-wipe. This produces an article for the consumer to easily clean and wipe surfaces, such as skin or counter-tops, and can improve cleansing efficacy. Ready-made articles, such as wet-wipes, are more convenient for consumers. There is also growing demand for more environmentally friendly options within the wet-wipe market. It is common for cleansing compositions to produce a foam when agitated, however, this can cause problems in manufacturing of both the compositions and, especially, wet-wipes. For example, manufacturing processes may need to be slowed down to avoid foam formation or to allow the foam to dissipate. Alongside other benefits, improving manufacturing efficiency may reduce the environmental impact of these products. High foam is undesirable in cleansing compositions used on the face especially around the eyes and in cleansing compositions used in auto-dishwash. Summary It is thus an objective of the present invention to provide cleansing compositions and articles which provides improved cleaning performance when compared with existing compositions and articles, preferably wherein the compositions and articles are low foaming. According to a first aspect of the invention, there is provided a cleansing composition comprising one or more biosurfactants and one or more taurate surfactants. The inventors have surprisingly found that the use of one or more biosurfactants in combination with one or more taurate surfactants can provide an unexpectedly low foaming composition which provides effective cleaning. According to a second aspect of the invention, there is provided a cleansing article comprising a fibrous substrate impregnated with a cleansing composition of the first aspect. According to a third aspect of the invention, there is provided a method ofcleaning at least a portion of a surface, wherein the method comprises contacting the portion of the surface with the cleansing composition of the first aspect or the cleansing article of the second aspect. According to a fourth aspect of the invention, there is provided a use of a cleansing composition or cleansing article according to the first or second aspects to provide cleaning to at least a portion of a surface. According to a fifth aspect of the invention, there is provided a method of forming a cleansing article according to the second aspect, the method comprising impregnating the fibrous substrate with the cleansing composition. According to a sixth aspect of the invention, there is provided a kit comprising a cleansing composition according to the first aspect and a fibrous substrate to which the cleansing composition may be applied. According to a seventh aspect of the invention, there is provided a product comprising the cleansing composition or cleansing article according to the first or second aspects and packaging for the cleansing composition orcleansing article. Detailed Description Unless otherwise stated, the following terms used in the specification and claims have the meanings set out below. The term "hydrocarbyl" is used in its ordinary sense, which is well-known to those skilled in the art. Specifically, it refers to a group having a carbon atom directly attached to the remainder of the molecule and having predominantly hydrocarbon character. The terms “alkyl” and “alkenyl” include both straight and branched chain alkyl and alkenyl groups respectively unless otherwise stated. References to individual alkyl groups such as “propyl” are specific for the straight chain version only and references to individual branched chain alkyl groups such as “isopropyl” are specific for the branched chain version only. For example, “C3-C35 alkyl” includes C11-C23 alkyl, C7-C23 alkyl, propyl, isopropyl and t-butyl. References to individual alkenyl groups such as “propenyl” are specific for the straight chain version only and references to individual branched chain alkenyl groups such as “isopropenyl” are specific for the branched chain version only. For example, “C3-C35 alkenyl” includes C11-C23 alkenyl, C7-C23 alkenyl, propenyl and isopropenyl. The term “aryl” as used herein relates to an organic radical derived from an aromatic hydrocarbon by removal of one hydrogen, and includes any monocyclic, bicyclic or polycyclic carbon ring of up to 7 members in each ring, wherein at least one ring is aromatic. References to aryl-alkyl (or aralkyl) groups as used herein relate to alkyl radicals substituted with an aryl group, wherein the aryl group is as defined herein. References to alkyl-aryl (or alkaryl) groups as used herein relate to aryl radicals substituted with an alkyl group, wherein the aryl group is as defined herein. As used in the specification and the appended claims, the singular forms “a”, “an,” and “the” include both singular and plural referents unless the context clearly dictates otherwise. Throughout this specification, the term “comprising” or “comprises” means including the component(s) specified but not to the exclusion of the presence of other components. The term “consisting essentially of’ or “consists essentially of’ means including the components specified but excluding other components except for components added for a purpose other than achieving the technical effect of the invention. The term “consisting of’ or “consists of’ means including the components specified but excluding other components. Whenever appropriate, depending upon the context, the use of the term “comprises” or “comprising” may also be taken to include the meaning “consists essentially of’ or “consisting essentially of’, and also may also be taken to include the meaning “consists of’ or “consisting of’. References herein to the composition being “free of’ or “free from” certain components are intended to mean that the component referenced is excluded from the composition, although a negligible amount, such as 0.01 wt% or less based on the total weight of the composition, of the component may be present for example due to impurities that may be present. As used herein, unless otherwise expressly specified, all numbers such as those expressing values, ranges, amounts of percentages may be read as if prefaced by the word “about”, even if the term does not expressly appear. The recitation of numerical ranges by endpoints includes all integer numbers and, where appropriate, fractions subsumed within that range (e.g. 1 to 5 can include 1,2,3,4 when referring to, for example, a number of elements, and can also include 1.5, 2, 2.70 and 3.80, when referring to, for example, measurements). The recitation of end points also includes the end point values themselves (e.g. from 1.0 to 5.0 includes both 1.0 and 5.0). Any numerical range recited herein is intended to include all sub-ranges subsumed therein. The optional features set out herein may be used either individually or in combination with each other where appropriate and particularly in the combinations as set out in the accompanying claims. The optional features for each exemplary aspect of the invention, as set out herein are also applicable to any other aspects or exemplary aspects of the invention, where appropriate. In other words, the skilled person reading this specification should consider the optional features for each aspect or embodiment of the invention as interchangeable and combinable between different aspects of the invention. As used herein, the term "and / or," when used in a list of two or more items, means that any one of the listed items can be employed by itself or any combination of two or more of the listed items can be employed. For example, if a list is described as comprising group A, B, and / or C, the list can comprise A alone; B alone; C alone; A and B in combination; A and C in combination, B and C in combination; or A, B, and C in combination. References to “one or more” of a list of components means that any one of the listed items can be employed by itself or any combination of two or more of the listed items can be employed. For example, if a list is described as one or more of A, B, and C, the list can comprise A alone; B alone; C alone; A and B in combination; A and C in combination, B and C in combination; or A, B, and C in combination. According to a first aspect of the invention, there is provided a cleansing composition comprising one or more biosurfactants and one or more taurate surfactants. References herein to one or more biosurfactants include mixtures of different biosurfactants when more than one biosurfactant is used. Biosurfactants typically have a very high Renewable Carbon Index (RCI) of up to 100% and may be completely biodegradable, improving the sustainability profile of the invention. By the term biosurfactant we mean a surfactant that is produced by microorganisms, for example which may be a product of a fermentation process. Typically, a biosurfactant is generated as a metabolic product during bacterial, fungal or algal fermentation, and the metabolic product may be further derivatised. Thus, references herein to a biosurfactant refer to biosurfactants that are direct metabolic products of bacterial, fungal or algal fermentation, as well as derivatives of the direct metabolic products. Similarly, references herein to a specific biosurfactant also refer to derivatives of that biosurfactant unless otherwise stated. The use of biosurfactants in the composition, method and use of the invention is advantageous, because biosurfactants are natural products, are generated in a sustainable way, are environmentally benign and typically have low toxicity. Biosurfactants are typically classified in four categories as polymeric biosurfactants, lipopeptides (or also called proteo-lipids), phospholipids and glycolipids. The one or more biosurfactants may be a complex mixture of biosurfactants. Biosurfactants may comprise one or more fatty acid and / or fatty alcohol residues. Suitably biosurfactants useful in the invention comprise one or more fatty acid residues. The one or more fatty acid and / or fatty alcohol residues that may be present in the biosurfactants may be the same or different and may be derived from any suitable fatty acid and / or fatty alcohol, preferably from a naturally occurring fatty acid and / orfatty alcohol. Fatty acid residues are mostly derived from natural plant oils in the form of triglycerides. For example, biocatalysts may hydrolyse lipid esters in natural plant oils forming fatty acids and glycerol. Suitably, the fatty acid and / or fatty alcohol residues may comprise a branched or unbranched, saturated or unsaturated, hydrocarbyl group. The fatty acid and / or fatty alcohol residues that may be present in the biosurfactants may comprise from 4 to 50 carbon atoms, for example from 6 to 30 carbon atoms, preferably from 8 to 24 carbon atoms, more preferably from 12 to 22, or from 14 to 20 or from 16 to 18 carbon atoms. Preferred biosurfactants may therefore comprise residues of fatty acids derived from oleic acid, hydroxy substituted oleic acid (such as ricinoleic acid), palmitic acid and vegetable oils (such as sunflower, corn, soya, safflower oil and rapeseed oil) or mixtures thereof. Any suitable biosurfactant(s) may be used. For example, the one or more biosurfactants may be selected from one or more of a glycolipid, a lipopeptide, a phospholipid and a polymeric biosurfactant (including mixtures thereof). For example, the one or more biosurfactants may be a glycolipid and a lipopeptide, or may be a glycolipid, a lipopeptide and a phospholipid, or may be two different glycolipids and so on. The one or more biosurfactants may each have any suitable molecular weight, such as a molecular weight of from 200 to 3000 g mol-1, for example from 250 to 2000 g mol-1, such as from 500 to 1500 g mol-1. The one or more biosurfactants may be one or more glycolipids. Glycolipids comprise one or more carbohydrate residues in addition to the one or more fatty acid and / or fatty alcohol residues. The carbohydrate and fatty acid / fatty alcohol residues are joined either by means of a linker group or a direct bond, for example via an ester, amide or glycosidic bond. Suitable glycolipids may comprise one or more carbohydrate residues selected from rhamnose, trehalose, sophorose, mannose, galactose, glucose, cellobiose, glucosamine, sulfoquinovose, fructose, xylose, sucrose, lactose, maltose, sorbitol, erythritol and / or mannitol residues. For example, the one or more carbohydrate residues may be selected from rhamnose, trehalose, sophorose, mannose, erythritol, galactose, cellobiose and / or glucose residues. Preferably, the one or more carbohydrate residues may be selected from rhamnose, trehalose, sophorose, mannose and / or erythritol residues. More preferably, the one or more carbohydrate residues may be selected from sophorose and / or rhamnose residues. Most preferably, the one or more carbohydrate residues may be sophorose residues. Suitable glycolipids may be selected from one or more of a rhamnolipid, a trehalolipid, a sophorolipid, a mannosylerythritol lipid, a glycolipid produced by Meyerozama guilliermondii, Saccharomyces cerevisiae, Candida utilis, Candida bombicola and / or Marinobacter hydrocarbonoclasticus. For example, suitable glycolipids may be selected from one or more of a rhamnolipid, a trehalolipid, a sophorolipid and a mannosylerythritol lipid. Suitably, the one or more glycolipids may be one or more sophorolipids. For example, the one or more biosurfactants may be selected from one or more of a rhamnolipid, a trehalolipid, a sophorolipid and a mannosylerythritol lipid. The one or more biosurfactants may be selected from one or more of a rhamnolipid and a sophorolipid. Suitably, the one or more biosurfactants may be one or more sophorolipids. Rhamnolipids comprise a rhamnose residue. Examples of suitable rhamnolipids may include those produced by species of Pseudomonas, Lysinibacillus and / or Serratia, for example those produced by Pseudomonas aeruginosa, Pseudomonas cepacia, Lysinibacillus sphaericus and / or Serratia rubidaea. Trehalolipids comprise a trehalose residue. Examples of suitable trehalolipids may include those produced by species of Nocardia, Rhodococcus, Starmerella, Arthrobacter, Corynebacterium and / or Candida, for example those produced by Rhodococcus erythropolis, Nocardia farcinica and / or Candida bombicola (also known as Starmerella bombicola). Sophorolipids comprise a sophorose residue. Examples of suitable sophorolipids may include those produced by species of Candida, Starmerella and / or Cutaneotrichosporon, for example those produced by Candida sphaerica, Starmerella bombicola and / or Cutaneotrichosporon mucoides. Suitable sophorolipids may exist in the “lactonic” form wherein a fatty acid residue is bonded separately to each ring of the sophorose residue to form a lactonic macrocycle. When the fatty acid residue is not bonded to a sophorose residue this may be known as the “acidic” form. Suitable sophorolipids may have a molar ratio of acidic to lactonic form in the range 99:1 to 1:99, for example in the range 50:50 to 60:40 or in the range 50:50 to 40:60. Suitable sophorolipids may have a molar ratio of acidic to lactonic form of 70:30 or of 30:70. Suitably, greater than 60%, for example greater than 70%, preferably greater than 80%, more preferably greater than 90%, of the sophorolipids may comprise an unsaturated fatty acid and / or fatty alcohol residue. Mannosylerythritol lipids comprise a mannose residue and an erythritol residue, preferably joined by an ether bond. Examples of suitable mannosylerythritol lipids may include those produced by species of Pseudozyma and / or Ustilago, for example Pseudozyma aphidis or Pseudozyma antarctica. The one or more biosurfactants may be lipopeptides. Lipopeptides comprise one or more peptide residues in addition to the one or more fatty acid and / or fatty alcohol residues. The one or more peptide residues may be cyclic peptide residues. Suitable lipopeptides may include surfactins, lichenysins, and / or those produced by Pseudomonas azotoformans, Bacillus velezensis, Bacillus pseudomycoides, Virgibacillus salaries, Bacillus cereus, Bacillus pumilius or Halomonas species. Surfactins may be produced by Bacillus species, such as B. subtillis or B. nealsonii. Lichenysins may be produced by Bacillus species, such as B. licheniformis. For example, the one or more biosurfactants may be selected from one or more of surfactin and lichenysin. The one or more biosurfactants may be phospholipids. Phospholipids comprise one or more phosphate groups in addition to the one or more fatty acid and / or fatty alcohol residues. Phospholipids may further comprise a linker group joining the one or more phosphate groups and the one or more fatty acid and / or fatty alcohol residues. Suitable linker groups may for example comprises an alcohol residue such as glycerol or sphingosine. Suitable phospholipids include those produced by species of Acinetobacter and / or Acidithiobacillus, for example Acidithiobacillus thiooxidans. The one or more biosurfactants may be polymeric biosurfactants. Polymeric biosurfactants are biopolymers (e.g. polysaccharides, polypeptides) and suitably comprise fatty acid and / or fatty alcohol residues. Suitable polymeric biosurfactants include cellulose, guar, diutan, starch, chitin, chitosan, glycogen, xanthan, dextran, dextrin, welan, gellan, pullulan, pectin, scleroglucan, schizophyllan, levan, locust bean gum, peptidoglycan, tara, konjak, tamarind, starch, karaya, tragacanth, carrageenan, glycan, succinoglycan, glucan, scleroglucan, maltodextrin, cyclodextrin, inulin, alginates, amylose, amylopectin, liposan, rufisan, emulsan, lipomanan and / or alasan. Polymeric biosurfactants may include those produced by species of Candida and / or Acinetobacter, for example Candida lipolytica, Acinetobacter Iwoffi and / or Acinetobacter radioresistens. For example, the one or more biosurfactants may be selected from one or more of liposan, rufisan, emulsan and alasan. For example, the one or more biosurfactants may be selected from one or more of a rhamnolipid, a trehalolipid, a sophorolipid, a mannosylerythritol lipid, surfactin, lichenysin, liposan, rufisan, emulsan and alasan. Suitable biosurfactants may be those produced by species of Pseudomonas, Lysinibacillus, Serratia, Nocardia, Rhodococcus, Candida, Starmerella, Cutaneotrichosporon, Pseudozyma, Meyerozyma, Saccharomyces, Marinobacter, Bacillus, Lactobacillus Virgibacillus, Halomonas, Thiobacillus, Acidithiobacillus, Klebsiella, Alcanivorax, Arthrobacter, Rhodotorula, Tsukamurella, Ustilago, Sphingomonas, Mycobacterium, Streptomyces, Gluconobacter, Aspergillus and / or Acinetobacter. The biosurfactants that are produced by a specific micro-organism may vary depending on the feedstock used and other variables in the growth conditions (e.g. temperature, pH, agitation and dissolved oxygen). Preferably, feedstocks comprise carbohydrates and / or lipids. Preferred lipid feedstocks are in the form of triglycerides. The feedstocks may comprise agricultural and / or industrial waste, for example vegetable oils, animal or vegetable fats, cooking oil waste, whey, glycerol, and / or combinations thereof. Biosurfactants suitable for the invention are preferably produced by micro-organisms from feedstock comprising carbohydrate and one or more lipids. More preferably, they are produced from feedstock comprising carbohydrate and one or more of vegetable oils (for example rapeseed, palm, sunflower, corn, soya and / or safflower oils), animal fats and vegetable fats. Suitable biosurfactants may be recovered from the fermentation broth before use by known recovery methods. For example, the biosurfactants may be recovered by precipitation, filtration (including ultrafiltration), adsorption to solid supports, centrifugation, chromatography (e.g. ionexchange chromatography), foam fractionation, liquid-liquid extraction, and / or gravity separation (decanting). Suitable biosurfactants may be used as crude extracts, or they may undergo further purification and / or derivatisation before use. Where biosurfactants are further purified, this may involve one or more purification techniques available to the skilled person, for example chromatographic techniques, ultrafiltration or washing with a suitable solvent (which solvent may be polar or non-polar). Where biosurfactants are further derivatised, this may comprise derivatisation of the fatty acid and / or fatty alcohol residues. Where the fatty acid or fatty alcohol residue has an unsaturated alkyl group, suitable methods for derivatisation of the fatty acid or fatty alcohol residue include mild reductive, strong reductive or oxidative ozonolysis with sodium periodate (resulting in a dialdehyde, diol or diacid respectively); dihydroxylation, for example with OsO4; epoxidation, for example with m-chloroperoxybenzoic acid; reduction, for example with H2 on a Pd / C catalyst; ring opening metathesis; treatment with HBr; or mono-hydroxylation, for example by hydroboration with an oxidative work-up. Where the biosurfactant is a glycolipid, the carbohydrate residue may be derivatised at the alcohol groups by esterification (e.g. with an anhydride), carboxymethylation (e.g. with an a-chloro acid), oxidation (to e.g. aldehyde or carboxylic acid), reaction with a non-ionic epoxide (e.g. ethylene oxide, propylene oxide), reaction with a cationic epoxide (e.g. glycidyltrimethyl ammonium chloride). The carbohydrate residue may be further derivatised by oxidative ring opening (e.g. with a periodate) resulting in a dialdehyde. Derivatives of biosurfactants comprising aldehyde groups may be further derivatised, for example to alcohols, carboxylic acids, esters, amides, imines and / or amines. Derivatives of biosurfactants comprising carboxylic acid groups may be further derivatised, for example to esters and / or amides. Derivatives of biosurfactants comprising 1,2-diol groups may be further derivatised, for example by C-C bond cleavage with periodate or peroxide, or reaction with an aldehyde. References herein to one or more taurate surfactants includes mixtures of different taurate surfactants when more than one taurate surfactant is used. The one or more taurate surfactants may each be of formula (I): 0 R2 R4 R1---C---N---C---C---SO3X R6 R3 R5 (i) wherein X is hydrogen, a metal ion or an optionally substituted ammonium ion; R1 represents an optionally substituted C3-C35 hydrocarbyl group; and each of R2, R3, R4, R5 and R6 independently represents hydrogen or a C1-C4 alkyl group. Suitably R1 represents an optionally substituted C3-C35 alkyl, C3-C35 alkenyl, C6-C12 aryl, C6-C12 aryl-Cs-C22 alkyl or C8-C22 alkyl-Ce-Ci2 aryl group. Suitably R1 represents an optionally substituted C3-C35 alkyl, C3-C35 alkenyl, C6-C12 aryl or Cs-C22 alkyl-Ce-Ci2 aryl group. More suitably, R1 represents an optionally substituted C3-C35 alkyl or C3-C35 alkenyl group, especially an optionally substituted C3-C35 alkenyl group. Most suitably, R1 represents a C3-C35 alkyl or C3-C35 alkenyl group, especially a C3-C35 alkenyl group. Suitably R1 represents a mixture of optionally substituted C3-C35 alkyl, C3-C35 alkenyl, C6-C12 aryl, C6-C12 aryl-Cs-C22 alkyl or C8-C22 alkyl-Ce-Ci2 aryl groups having differing chain lengths. Suitably R1 represents a mixture of optionally substituted C3-C35 alkyl, C3-C35 alkenyl, C6-C12 aryl or C8-C22 alkyl-Ce-Ci2 aryl groups having differing chain lengths. For example R1 may be derived from the mixture of fatty acids having differing chain lengths found in triglyceride oils for example coconut oil, palm oil, palm kernel oil, olive oil, vegetable oil, sunflower oil or rapeseed oil. Suitably R1 may represent an optionally substituted C3-C35 alkyl or C3-C35 alkenyl group, such as an optionally substituted C8-C24 alkyl or C8-C24 alkenyl group, or an optionally substituted C12-C18 alkyl or C12-C18 alkenyl group. Suitably R1 may represent a C3-C35 alkyl or C3-C35 alkenyl group, such as a C8-C24 alkyl or Cs-C24 alkenyl group, or a C12-C18 alkyl or C12-C18 alkenyl group. Suitably R1 may represent an optionally substituted C4-C29 alkyl group, such as an optionally substituted C7-C23 alkyl group, for example an optionally substituted C11-C23 alkyl group, preferably an optionally substituted C13-C21 alkyl group. Suitably R1 may represent an optionally substituted C4-C29 alkenyl group, such as an optionally substituted C7-C23 alkenyl group, for example an optionally substituted C11-C23 alkenyl group, preferably an optionally substituted C13-C21 alkenyl group. Suitably R1 may represent a C4-C29 alkyl group, such as a C7-C23 alkyl group, for example a C11-C23 alkyl group, preferably a C13-C21 alkyl group. Suitably R1 may represent a C4-C29 alkenyl group, such as a C7-C23 alkenyl group, for example a C11-C23 alkenyl group, preferably a C13-C21 alkenyl group. R1 is suitably provided by one or more fatty acids (i.e. one or more acids of formula R1COOH). Fatty acids obtained from natural oils often include mixtures of fatty acids. For example, the fatty acid obtained from coconut oil contains a mixture of fatty acids including C12 lauric acid, C14 myristic acid, C16 palmitic acid, Cs caprylic acid, C10 capric acid and Cis stearic and oleic acid. R1 may be provided by one or more naturally occurring fatty acids and / or of one or more synthetic fatty acids. For example, R1 may consist essentially of or consist of the residue of a single fatty acid. R1 may be provided by one or more naturally occurring and / or renewable fatty acids. Examples of carboxylic acids from which R1 may be derived include coco acid, hexanoic acid, caproic acid, caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, palmitoleic acid, stearic acid, oleic acid, linoleic acid, arachidic acid, gadoleic acid, arachidonic acid, eicosapentanoic acid, behenic acid, erucic acid, docosahexanoic lignoceric acid, naturally occurring fatty acids such as those obtained from coconut oil, tallow, palm kernel oil, butterfat, palm oil, olive oil, corn oil, linseed oil, peanut oil, fish oil and rapeseed oil; synthetic fatty acids made as chains of a single length or a selected distribution of chain lengths; and mixtures thereof. R1 may also be derived from fatty acids obtained via fermentation or general biotechnological processes, or from waste vegetable oils. These may be obtained by chemical or enzymatic routes. Suitably R1 may be provided by oleic acid, mixed fatty acids derived from coconut oil or the mixed fatty acids derived from palm kernel oil. Suitable coconut derived feedstocks include coconut fatty acid, coconut oil, coconut oil methyl esters, virgin coconut oil, refined bleached and deodorised coconut oil, ‘distilled and topped’ hardened coconut fatty acid and methyl esters thereof. Also useful are palm oil, hydrogenated palm kernel oil derived C12-C18 fatty acids (hardened and topped fatty acid) and methyl esters thereof. Preferably, R1 predominantly comprises the residue of an unsaturated fatty acid having 18 carbon atoms. R1 may be derived from the mixture of fatty acids having differing chain lengths found in rapeseed oil. The cleansing composition may comprise only a single taurate surfactant of formula (I). Alternatively, the cleansing composition may comprise a mixture of two or more taurate surfactants of formula (I). Each of R2, R3, R4, R5 and R6 is independently selected from hydrogen or a Ci to C4 alkyl group. When any of R2, R3, R4, R5 and R6 is a Ci to C4 alkyl group, the alkyl group is suitably n-propyl, ethyl or methyl, such as ethyl or methyl, most preferably methyl. Suitably, R6 may be hydrogen. Preferably, R6 may be a Ci to C4 alkyl group, more preferably methyl. Suitably each of R2, R3, R4, R5 and R6 may be hydrogen, i.e. the compound of formula (I) may be an acyl taurate surfactant. Suitably, R6 may be a Ci to C4 alkyl group, each of R2, R3, R4 and R5 may be hydrogen and the compound of formula (I) may be an acyl N-alkyl taurate surfactant. Where the compound of formula (I) is an acyl N-alkyl taurate surfactant, R6 may preferably be n-propyl, ethyl or methyl. Preferably R6 may be ethyl or methyl, most preferably methyl. Thus the compound of formula (I) may preferably be an acyl N-methyl taurate surfactant. Suitably, R6 may be a Ci to C4 alkyl group and each of R2, R3, R4 and R5 may independently represent hydrogen or a C1-C4 alkyl group wherein at least one of R2, R3, R4 and R5 is not hydrogen. When at least one of R2, R3, R4 and R5 represents an optionally substituted C1-C4 alkyl group, the alkyl group is suitably n-propyl, ethyl or methyl, such as ethyl or methyl, most preferably methyl. Preferably one of the groups R2, R3, R4 and R5 represents an optionally substituted C1-C4 alkyl group and the remaining groups represent hydrogen. For example, R2 may represent an optionally substituted C1-C4 alkyl group and R3, R4 and R5 may all represent hydrogen. For example, R4 may represent an optionally substituted C1-C4 alkyl group and R2, R3 and R5 may all represent hydrogen. Preferably R2 represents a C1-C4 alkyl group and R3, R4 and R5 all represent hydrogen and / or R4 represents a C1-C4 alkyl group and R2, R3 and R5 all represent hydrogen. Thus a mixture of compounds may be present in which either R2 or R4 is a Ci to C4 alkyl group and the remainder of R2, R3, R4 and R5 are hydrogen. Most preferably R2 may represent a methyl group and R3, R4 and R5 may all represent hydrogen or R4 may represent a methyl group and R2, R3 and R5 may all represent hydrogen. Suitably R6 may be hydrogen and either R2 or R4 may be a Ci to C4 alkyl group, preferably methyl, and the remainder of R2, R3, R4 and R5 may be hydrogen. Suitably X represents hydrogen, a metal cation or an optionally substituted ammonium cation, preferably a metal cation. By “optionally substituted ammonium cation”, we mean to refer to an ammonium cation wherein the nitrogen atom may be substituted with from 1 to 4 optionally substituted hydrocarbyl groups. Suitable ammonium cations include those derived from alkyl amines and alkanolamines. Preferred ammonium cations include isopropanolamine, isopropylamine, ethanolamine, diethanolamine, triethanolamine and 2-amino-2-methyl-1,3-propanediol (AMPD). Preferred ammonium cations include NHZ and the ammonium cation of triethanolamine. Suitable metal cations include alkali metal cations, for example sodium, lithium and potassium cations, and alkaline earth metal cations, for example calcium and magnesium cations. Suitably, X represents hydrogen, an alkali metal cation or an optionally substituted ammonium cation. Preferably, X represents a potassium or sodium cation. Most preferably, X represents a sodium cation. The skilled person will appreciate that when X is a divalent metal cation two moles of anion will be present for each mole of cation. Suitably the surfactant composition of the present invention may comprise the reaction product of N-methyl methyl taurine and one or more fatty acids, that is a compound of formula R1CONR6CHR2CHR4SO3X in which one of R2 and R4 is methyl and the other is hydrogen. Mixtures of these isomers may be present. The surfactant composition of the present invention may include a mixture of more than one taurate surfactant of formula (I). For example, an isomeric mixture of acyl N-alkyl alkyl taurate surfactants may be present. Such a mixture may include, for example an acyl N-alkyl alkyl taurate surfactant in which R2 represents a C1-C4 alkyl group (suitably methyl) and R3, R4 and R5 are all hydrogen and an acyl N-alkyl alkyl taurate surfactant in which R4 represents a C1-C4 alkyl group (suitably methyl) and R2, R3 and R5 are all hydrogen. In particular, the surfactant composition of the present invention may comprise a mixture of isomers, that is a compound of formula R1CONR6CH2CHR4SO3X in which R4 represents a C1-C4 alkyl group (preferably methyl) and a compound of formula R1CONR6CHR2CH2SO3X in which R2 represents a C1-C4 alkyl group (preferably methyl). Suitably such mixtures comprise at least 90% of compounds in which R2 is methyl and R4 is hydrogen and at most 10% of compounds in which R2 is hydrogen and R4 is methyl. Preferably the surfactant composition provided by the present invention comprises one or more taurate surfactants of formula (I) selected from sodium lauroyl taurate, sodium cocoyl taurate, sodium oleoyl taurate, sodium myristoyl taurate, sodium N-methyl lauroyl taurate, sodium N-methyl cocoyl taurate, sodium N-methyl oleoyl taurate, sodium N-methyl myristoyl taurate, sodium N-methyl methyl lauroyl taurate, sodium N-methyl methyl cocoyl taurate, sodium N-methyl methyl oleoyl taurate and sodium N-methyl methyl myristoyl taurate. Sodium N-methyl oleoyl taurate, sodium N-methyl lauroyl taurate and sodium N-methyl methyl oleoyl taurate are especially preferred. The one or more taurate surfactants may each be of the formula (I) wherein X is a metal ion; R1 represents an optionally substituted C13-C21 hydrocarbyl group; and each of R2, R3, R4, R5 and R6 independently represents hydrogen or methyl. Preferably, the one or more taurate surfactants are each of the formula (I) wherein X is a metal ion; R1 represents an optionally substituted C13-C21 hydrocarbyl group; R2 and R4 each independently represent hydrogen or methyl, provided that one of R2 and R4 represents hydrogen; R3 and R5 each represent hydrogen; and R6 represents hydrogen or methyl. Most preferably, the cleansing composition comprises a taurate surfactant of formula (I) wherein X is a metal ion, such as sodium; R1 represents an unsubstituted C17 alkenyl group; R2, R3, R4 and R5 represent hydrogen and R6 represents methyl. For example, this may be sodium N-methyl oleoyl taurate. The weight ratio of the one or more biosurfactants to the one or more taurate surfactants may be any suitable ratio. For example, the weight ratio of the one or more biosurfactants to the one or more taurate surfactants may be from 12:1 to 1:12, such as from 9:1 to 1:9, for example from 4:1 to 1:4, or from 7:3 to 3:7. The weight ratio of the one or more biosurfactants to the one or more taurate surfactants may be from 9:1 to 1:9, preferably from 1.5:1 to 1:9, most preferably from 1.5:1 to 3:7. Suitably, the one or more taurate surfactants are present in the composition in an equal or greater amount than the one or more biosurfactants, by weight. The cleansing composition of the present invention may comprise one or more fatty acids, especially wherein the one or more fatty acids are unreacted starting materials resulting from production of the one or more biosurfactants and / or the one or more taurate surfactants. Preferably, no additional fatty acids (i.e. which are not unreacted starting materials resulting from production of the one or more biosurfactants and / or the one or more taurate surfactants) are added to the composition. The cleansing compositions may be free of alkoxylated compounds which could lead to the presence of 1,4-dioxane; or sulfate surfactants which can lead to skin and ocular irritation; or linear and / or branched alkylbenzene sulfonates which are derived from petrochemical sources. For example, the cleansing compositions may be free of alkoxylated compounds and free of sulfate surfactants and free of linear and / or branched alkylbenzene sulfonates which are derived from petrochemical sources. The cleansing composition suitably comprises the one biosurfactants and one or more taurate surfactants in an amount that is suitable for providing cleansing, for example to a natural or biological surface. For example, the combined (total) amount of the one or more biosurfactants and the one or more taurate surfactants present in the cleansing composition may be from 0.01 to 20 wt%, such as from 0.01 to 10 wt% or from 0.01 to 5 wt%, preferably from 0.1 to 2 wt% or 0.1 to 1.5 wt%, for example from 0.1 to 1 wt%, based on the total weight of the composition. The cleansing composition of the first aspect may be in the form of a concentrate composition. Thus, there may be provided a concentrate composition comprising one or more biosurfactants and one or more taurate surfactants. The combined (total) amount of the one or more biosurfactants and the one or more taurate surfactants in the concentrate composition is typically greater than 20 wt%, such as from 21 to 85 or from 25 to 75 wt%, or preferably from 30 to 75 wt% based on the total weight of the concentrate composition. The concentrate composition may be diluted with a suitable solvent (such as a solvent disclosed herein such as water) to produce a cleansing composition which is ready to use for cleansing. A concentrate composition may provide benefits in use, such as reduced environmental impact of transport and reduced cost of storage. The combined (total) amount of the one or more biosurfactants and the one or more taurate surfactants present in the cleansing composition may be at least 60 wt%, such as at least 70 wt%, suitably at least 80 wt%, preferably at least 95 wt% of the total amount of surfactant (including biosurfactants and non-biological surfactants) present in the composition. Suitably, the combined (total) amount of the one or more biosurfactants and the one or more taurate surfactants present in the cleansing composition is 100 wt% of the total amount of surfactant (including biosurfactants and non-biological surfactants) present in the composition. In other words, the composition suitably does not comprise additional surfactants to the one or more biosurfactants and one or more taurate surfactants. Suitably, when the composition comprises sophorolipids as the one or more biosurfactants, the combined (total) amount of the one or more sophorolipids and the one or more taurate surfactants present in the cleansing composition may be at least 60 wt%, such as at least 70 wt%, suitably at least 80 wt%, preferably at least 95 wt% of the total amount of surfactant (including biosurfactants and non-biological surfactants) present in the composition. Preferably, the combined (total) amount of the one or more sophorolipids and the one or more taurate surfactants present in the cleansing composition is 100 wt% of the total amount of surfactant (including biosurfactants and non-biological surfactants) present in the composition. The one or more biosurfactants may be present in an amount of from 0.01 to 10 wt%, such as from 0.01 to 5 wt% and / or the one or more taurate surfactants may be present in an amount of from 0.01 to 10 wt%, such as from 0.01 to 5 wt% based on the total weight of the composition. The cleansing composition may further comprise a solvent. Suitable solvents and amounts thereof will be known to persons skilled in the art. For example, suitable solvents include water, alcohols such as ethanol or isopropanol, glycols such as ethylene glycol or propylene glycol, terpenes such as limonene, and mixtures thereof. The cleansing composition may comprise at least 80 wt% of solvent, for example at least 95 wt% solvent, based on the total weight of the composition. The cleansing composition may comprise at least 97 wt% of solvent. When the composition of the first aspect is a concentrate composition, the concentrate composition may comprise less than 80 wt% of a suitable solvent, such as from 15 to 79 or from 25 to 75 wt%, or preferably from 25 to 70 wt% of a suitable solvent based on the total weight of the concentrate composition. Preferably, the cleansing composition of the first aspect is an aqueous composition. Therefore the cleansing composition may further comprise water. The cleansing composition may comprise at least 80 wt% of water, for example at least 95 wt% of water, based on the total weight of the composition. The cleansing composition may comprise at least 97 wt% of water. When the composition of the first aspect is a concentrate composition, the concentrate composition may comprise less than 80 wt% of water, for example from 21 to 85 or from 25 to 75 wt%, or preferably from 30 to 75 wt% of water based on the total weight of the concentrate composition. The cleansing composition of the first aspect is preferably a liquid composition. In some embodiments the cleansing composition may consist essentially of one or more biosurfactants, one or more taurate surfactants and water. In some embodiments the cleansing composition may consist of one or more biosurfactants, one or more taurate surfactants and water. The cleansing composition of the first aspect may further comprise one or more additional components. Suitable additional components and amounts thereof will be known to persons skilled in the art. For example, the one or more additional components may be selected from a further surfactant, a pH modifier, a preservative, a fragrance and an antibacterial agent, preferably selected from a pH modifier, a preservative, a fragrance and an antibacterial agent. Where the cleansing composition comprises such additional components, these may be present in any suitable amount, such as an amount of less than 5 wt%, for example less than 1 wt%, preferably less than 0.1 wt%, based on the total weight of the composition. For example, when present, the additional components, may be present in an amount of from 0.001 to less than 5 wt%, for example from 0.001 to 1.5 wt%, such as from 0.001 to 0.9 wt% or from 0.001 to 0.095 wt%, based on the total weight of the composition. The cleansing composition may comprise a pH modifier. Suitable pH modifiers will be known to persons skilled in the art and include lactic acid, citric acid, potassium hydroxide, sodium hydroxide, sodium carbonate, triethanolamine and sodium gluconate. A preferred pH modifier is citric acid. The cleansing composition of the first aspect may have a pH from 3 to 9, for example from 4 to 7. Preferably, the cleansing composition has a pH from 5 to 6. Such a pH may improve compatibility with preservatives, such as sodium benzoate, while maintaining effective detergent activity. Most preferably, the cleansing composition has a pH from 5 to 5.5. Suitable preservatives will be known to the person skilled in the art and include sodium benzoate, potassium sorbate, sorbic acid, phenoxyethanol, benzyl alcohol, DMDM hydantoin, imidazolidinyl urea, methylchloroisothiazolinone, methylisothiazolinone, salicylic acid, benzyl salicylate, methylparaben, propylparaben and caprylyl glycol. A preferred preservative for use herein is sodium benzoate. Suitable antibacterial agents include cationic compounds such as alkyl dimethyl benzyl ammonium chlorides; carboxylic acids such as acetic acid, citric acid, benzoic acid, lactic acid [L-lactic acid], salicylic acid, maleic acid; phosphoric acid; and essential oils such as those derived from bay, cinnamon and clove. When present, any further surfactant(s) are preferably non-biological surfactants. The term “non-biological surfactant” is used herein to refer to a surfactant which is not a biosurfactant, suitably a surfactant that is not a product of a fermentation process. Suitable non-biological surfactants may be synthetic detergents, also known as “syndets”, and may include anionic, non-ionic, cationic and / or amphoteric surfactants. Preferably the cleansing composition of the first aspect does not comprise any further surfactant(s), i.e.in addition to the one or more biosurfactants and one or more taurate surfactants. The cleansing composition of the first aspect is preferably low foaming. By low foaming, we mean that the composition has a reduced tendency to produce a foam (or foaming tendency), for example, when shaken. A foam herein is used to refer to a series of gas pockets trapped within a system of thin films of a liquid, such as the cleansing composition of the first aspect. A foam layer will typically form on top of a composition due to its lower density. A common method to determine a composition’s foaming tendency is to subject the composition to a reproducible agitation and measure the resulting foam layer height. Herein, a method may be used to determine the foaming tendency of a composition whereby 3 mL of a composition comprising a total of 1 wt% of surfactants is placed into a 15 mL vial. The vial is sealed and manually shaken 20 times and then the height of resultant foam layer is measured immediately (to provide an initial foam layer height). Preferably a composition of the first aspect will produce an initial foam layer height of 3 mm or less when subjected to this method. Alternatively, the foaming tendency of a composition may be determined by use of a specialised foam tester, such as the SITA foam tester R-2000. Standard methods for testing foaming tendency include ASTM D3601-88(2007) (bottle test) and DIN 53901-2 (Ross-Miles method). The cleansing composition of the first aspect may be substantially clear. The term “clear” is used herein as equivalent to “transparent” and would be well understood by a person skilled in the art to mean that light can pass through the material or composition, such that an object behind can be distinctly seen. The composition is preferably clear to the human eye. A clear composition may be more appealing to consumers. Methods for measuring transmittance and turbidity will be known to the skilled person. As a person skilled in the art would appreciate, clarity (transparency) can be measured in different ways, such as by measuring the amount of light that passes through a sample, so as to provide a transmittance value (%T), or by measuring the scattering of light by a sample, so as to provide an indication of turbidity (determined by Nephelometric Turbidity Units or NTU). Thus, transmittance and turbidity values are both properties that can be used to indicate whether or not a sample is clear. A clear composition may have a high level of transmittance and / or a low level of turbidity. The selection of which method to use to determine whether a sample is clear will depend on the nature of the sample, such as the components thereof and whether the sample comprises any suspended solids, as would be understood by a person skilled in the art. A suitable transmittance test can, for example, be conducted using a Photometer 7100 instrument (for example available from Palintest), which records a transmittance value as a percentage of visible light transmitted through a sample, for example as measured according to the transmittance test measurement method described in the examples. An opaque sample will have a transmittance value of 0%. Herein a composition having a transmittance value (%T) of 90% or greater is considered to be clear. A suitable test for turbidity may be conducted using a HunterLab Vista instrument, for example as measured according to the turbidity value test method described in the examples. Herein a composition having a turbidity value of less than 10 NTU is considered to be clear. The cleansing composition of the first aspect suitably has a viscosity similar to that of water. A water-like viscosity can be beneficial in processing the composition and improve application to a substrate for use. Simple comparison to a sample of water may be sufficient to measure the viscosity. Quantitative methods for measuring viscosity will be known to the skilled person, for example the viscosity may be measured using a Brookfield viscometer. The cleansing composition may have a viscosity of from 0.1 to 25 cP, preferably from 0.1 to 5 cP, measured at 20 °C. The cleansing composition of the first aspect may be suitable for personal cleaning. Thus, the cleansing composition of the first aspect may be a personal care cleansing composition. Preferably, the cleansing composition of the first aspect may be a sulfate-free personal care cleansing composition (i.e. free from sulfate surfactants). When the cleansing composition of the first aspect is a personal care cleansing composition, the one or more biosurfactants may be present in an amount of from 0.01 to 5 wt%, for example from 0.1 to 1 wt%, preferably from 0.2 to 0.8 wt% based on the total weight of the composition and / or the one or more taurate surfactants may be present in an amount of from 0.01 to 5 wt%, for example from 0.1 to 1 wt%, preferably from 0.2 to 0.8 wt%, based on the total weight of the composition. Preferably the personal care cleansing composition comprises at least 80 wt% water, for example at least 95 wt% water, based on the total weight of the composition. The cleansing composition may comprise at least 97 wt% water. Suitably, the personal care cleansing composition of the present invention does not comprise alcoholic solvents such as ethanol and isopropanol. The personal care cleansing composition is preferably a liquid composition. The composition of the first aspect may be suitable for household cleaning. Thus, the cleansing composition of the first aspect may be a household cleansing composition. The cleansing composition of the first aspect may be particularly suitable for use in dishwashing, for example manual dishwashing, preferably automatic dishwashing (also referred to as autodishwash). The cleansing composition may therefore be a rinse aid composition or an automatic dishwashing composition. Low foaming compositions are particularly desirable in auto-dishwash applications. Where the cleansing composition of the first aspect is a rinse aid composition, it is preferably a rinse aid composition for use in automatic dishwashing. The rinse aid composition is preferably a liquid composition. Where the cleansing composition of the first aspect is an automatic dishwashing composition, the automatic dishwashing composition is suitably in the form of a tablet, a powder, granules, flakes, a liquid, a gel, a paste, or a combination thereof. The automatic dishwashing composition may further comprise a builder. Suitable builders will be known to those skilled in the art. Suitably, the builder is present in an amount of from 15 to 70 wt% based on the total weight of the automatic dishwashing composition. A suitable builder may comprise a phosphorus-containing builder or a phosphorus-free builder. The builder is suitably present in an amount of from 15 to 60 wt% based on the total weight of the automatic dishwashing detergent composition. In some embodiments, the builder comprises a phosphorus-containing builder. The phosphorus-containing builder is suitably selected from phosphonates (such as HEDP (1-hydroxyethylidene-1,1-disphosphonic acid)), mono-phosphates, di-phosphates, tri-polyphosphates and oligomeric-polyphosphates. The phosphorus-containing builder is suitably present in an amount of from 15 to 60 wt% based on the total weight of the automatic dishwashing composition. Preferably, the builder comprises a phosphorus-free builder. The phosphorus-free builder suitably comprises a polycarboxylate, such as an aminocarboxylate. Suitable phosphorus-free builders include methylglycine diacetic acid (MGDA), N,N-dicarboxymethyl glutamic acid (GLDA), aspartic acid-N-monoacetic acid (ASMA), aspartic acid-N,N-diacetic acid (ASDA), aspartic acid-N-monopropionic acid (ASMP), iminodisuccinic acid (IDA), N-(2-sulfomethyl)aspartic acid (SMAS), N-(2-sulfoethyl)aspartic acid (SEAS), N-(2-sulfomethyl)glutamic acid (SMGL), N-(2-sulfoethyl)glutamic acid (SEGL), N-methyliminodiacetic acid (MIDA), a-alanine-N,N-diacetic acid (a-ALDA), b-alanine-N,N-diacetic acid (b-ALDA), serine-N,N-diacetic acid (SEDA), isoserine-N,N-diacetic acid (ISDA), phenylalanine-N,N-diacetic acid (PHDA), anthranilic acid-N,N-diacetic acid (ANDA), sulfanilic acid-N,N-diacetic acid (SLDA), taurine-N,N-diacetic acid (TUDA) and sulfomethyl-N,N-diacetic acid (SMDA), iminodisuccinic acid (IDS), (hydroxy)iminodisuccinic acid (HIDS), ethylenediamine-N,N’-disuccinic acid (EDDS), malonic acid, (ethylenedioxy)diacetic acid, maleic acid, diglycolic acid, tartaric acid, tartronic acid, fumaric acid, citric acid, homopolymers of acrylic acid, polyepoxysuccinic acids (PESAs), and salts, esters and derivatives thereof. Suitably, the salts are water-soluble. Preferably, the salts are alkali metal salts (such as sodium salts), alkanolamine salts, or ammonium salts. Preferably, the phosphorus-free builder comprises one or more of methylglycine diacetic acid (MGDA), N,N-dicarboxymethyl glutamic acid (GLDA), citric acid, or salts, esters or derivatives thereof. Preferably, the phosphorus-free builder comprises trisodium citrate. The automatic dishwashing composition may further comprise one or more of an anti-tarnishing agent, a pH control agent, a bleaching agent, a bleach activating agent, a silicate, a filler, a pearlescent agent, an anti-bacterial agent, a softening agent, a thickening agent, a stabilising agent, a defoaming agent, a bleach scavenging agent, a solvent or hydrotrope, a flow control agent, an enzyme, an enzyme stabilising agent, a solid suspending agent, an anti-redeposition agent, a dispersing agent, an anti-scaling agent, a colourant, a perfume, a dishwasher salt and a rinse aid. The automatic dishwashing composition may comprise a bleaching agent. Suitable bleaching agents may be selected from one or more of a peroxy bleaching agent and a halogen bleaching agent. The automatic dishwashing composition may comprise a bleach activating agent. Suitable bleach activating agents may be selected from one or more of a manganese compound, a cobalt (III) compound, or tetraacetyleneethylenediamine (TAED). Suitable manganese compounds include mononuclear compounds, such as manganese acetate or manganese oxalate, and dinuclear compounds, such as those disclosed in EP1741774. The automatic dishwashing detergent composition may comprise a filler. The filler may comprise an organic filler or an inorganic filler. Suitably, the filler does not comprise calcium or magnesium ions. Suitable fillers may be selected from one or more of sucrose esters, urea, sodium sulfate, sodium chloride, and potassium chloride. Preferably, the filler comprises sodium sulfate. The filler may be present in an amount of up to 60 wt%, such as from 10 to 30 wt%, based on the total weight of the automatic dishwashing composition. The automatic dishwashing composition may comprise a softening agent. Preferably, the softening agent comprises hydroxyethyl laurdimonium chloride. The automatic dishwashing detergent composition may comprise a thickening agent. The thickening agent may be selected from one or more of a clay, a cross-linked acrylic acid polymer, and a salt of polyacrylic acid. Examples of suitable thickening agents are described in US4,431,559; US4,511,487; US4,740,327; US4,752,409; US4,859,358; US4,836,948; US4,867,896; and GB2164350. When the automatic dishwashing additive comprises a thickening agent, the composition is suitably in the form of a liquid, a gel, ora paste. The thickening agent may comprise a clay. The clay may comprise a smectite clay selected from one or more of montmorillonite (bentonite), hectorite, saponite; silica, silica gel, and aluminosilicate. Commercially available synthetic smectite clays include Laponite (trade mark) supplied by Laporte Industries. Commercially available bentonite clays include Korthix H and VWH available from Combustion Engineering, Inc.; Polargel T available from American Colloid Co.; and Gelwhite clays (particularly Gelwhite GP and H) available from English China Clay. The thickening agent may comprise a cross-linked acrylic acid polymer. Suitable cross-linked acrylic acid polymers include those sold under the tradename "Carbopol", such as Carbopol 940 and 617. Suitably, the cross-linked acrylic acid polymer has a number average molecular weight of about 4,000,000 and the automatic dishwashing composition is in the form of a clear gel. The thickening agent may comprise a salt of polyacrylic acid. The salts of polyacrylic acid may be cross-linked. Suitably, the salt of polyacrylic acid suitably has a number average molecular weight of at least 300,000, such as from 300,000 to 6,000,000. The automatic dishwashing composition may comprise a stabilising agent. Suitable stabilising agents may be selected from one or more of a long-chain soap and a C12 to C18 sulfate, Laponite (trade mark),a metal oxides, a salts of metal oxide, a compound comprising trivalent metal ions, and a water-soluble structuring chelant. When the automatic dishwashing composition comprises a stabilising agent, the composition is suitably in the form of a liquid, a gel, or a paste. Suitable long-chain calcium and sodium soaps and C12 to C18 sulfates are described in US3,956,158 and US4,271,030 and other suitable metal salts of long-chain soaps are described in US4,752,409. Suitable Laponite (trade mark) and metal oxides and their salts are described in US4,933,101. Such stabilising agents may be present in an amount of from 0.01 to 5 wt%, preferably from 0.01 to 2 wt% based on the total weight of the automatic dishwashing composition, preferably wherein the automatic dishwashing composition is in the form of a liquid. Compounds containing trivalent metal ions are suitably present in an amount of from 0.01 to 4 wt% based on the total weight of the automatic dishwashing composition. Laponite and / or watersoluble structuring chelants are suitably present in an amount of from 1 to 60 wt% based on the total weight of the automatic dishwashing composition. When the automatic dishwashing composition comprises a compound containing trivalent metal ions, the composition is suitably in the form of a gel. The automatic dishwashing composition may comprise a defoaming agent. The defoaming agent may comprise a silicone. The automatic dishwashing composition may comprise a bleach scavenging agent. Suitable bleach scavenging agents may be selected from one or more of sodium bisulphite, sodium perborate, a reducing sugar and a short-chain alcohol. The automatic dishwashing composition may comprise a solvent or hydrotrope. Suitable solvents and hydrotropes may be selected from one or more of ethanol, isopropanol, alkylbenzene sulfonates such as sodium xylene sulfonates, potassium cumenesulfonate, sodium cumenesulfonate, and sodium toluenesulfonate. Preferably, the solvent or hydrotrope comprises an alkylbenzene sulfonate. The automatic dishwashing composition may comprise an enzyme. Suitable enzymes may be selected from one or more of a protease (e.g., Alcalase (trade mark), Savinase (trade mark) and Esperase (trade mark) from Novo Industries A / S), amylases (e.g. Termamyl (trade mark) from Novo Industries A / S), a lipase (e.g., Lipolase (trade mark) from Novo Industries A / S)) and an oxidases. Suitably, the automatic dishwashing composition is provided in an automatic dishwashing product. The automatic dishwashing product may suitably be in the form of a tablet. The tablet may comprise a water-soluble coating. The tablet may suitably comprise a compartment comprising the automatic dishwashing composition, preferably in the form of a liquid. The tablet may comprise one or more other compartments which comprise one or more further additives. The one or more further additives may be in any suitable form, such as a powder or a liquid. Suitably, the tablet comprises two or more compartments and the compartments are divided by a water-soluble coating. The cleansing composition of the first aspect may be suitable for automotive cleaning. Thus, the cleansing composition of the first aspect may be an automotive cleansing composition. The cleansing composition of the first aspect may be suitably prepared by dilution of a concentrate as is common practise for one skilled in the art. In this case, dilution may be with any suitable solvent (such as a solvent as discussed herein, for example water) to produce a cleansing composition which is ready to use. The cleansing composition of the first aspect suitably has a high total Renewable Carbon Index (RCI). The renewable carbon index (RCI) for a component is calculated according to ISO 16128-1:2016, wherein the number of carbon atoms derived from renewable carbon sources is divided by the total number of carbon atoms in a component. The total RCI of the cleansing composition is a weighted average of the RCI of each carbon-containing surfactant in the composition. The %RCI is obtained by multiplying the RCI by 100. Preferably, the total percentage RCI of the cleansing composition is at least 30%, preferably at least 40%, more preferably at least 50%, suitably at least 60%, preferably at least 70% or at least 80%. According to a second aspect of the invention, there is provided a cleansing article comprising a fibrous substrate impregnated with a cleansing composition of the first aspect. Features of the cleansing composition in the second aspect are as disclosed herein in relation to the first aspect. The cleansing composition may impregnate the fibrous substrate in the sense that it may enter into interstitial spaces within the substrate and / or surface features / indentations on the surface of the substrate. The fibrous substrate of the cleansing article may be at least partially saturated with the cleansing composition, preferably fully saturated, with the cleansing composition. By fully saturated we mean that the cleansing composition has impregnated the fibrous to the extent that it cannot hold substantially more of the cleansing composition. The fibrous substrate may be any substrate comprising fibres of material. The fibrous substrate may comprise any suitable fibres, such as natural fibres, synthetic fibres or a mixture thereof. Natural fibres typically comprise polysaccharides such as cellulose and / or starch. Suitable fibres include cotton, linen, silk, cellulose, starch, bamboo, coconut husk, sisal, sugarcane, baggase, awkara, plantain, banana, jute, hemp, musamba, wood pulp, rayon, bioplastic, polyester, polypropylene, polyamide and / or polyethylene. Preferably, the fibrous substrate of the cleansing article of the second aspect may comprise cotton, cellulose, bamboo, polyester, polypropylene, wood pulp and / or rayon. Said fibres are suitably formed into the substrate, for example in the form of a fabric or textile. The fibres may be formed by any suitable processes, such as spinning, weaving, carding, felting, compressing, and / or bonding by chemical, mechanical, heat or solvent treatment. The fibres may be non-woven. Preferably, the fibrous substrate is biodegradable, for example it may comprise naturally biodegradable materials such as bamboo, or biodegradable synthetic materials such as bioplastics. The substrate may conform to one or more industrial compostability standards such as EN13432 or ASTM 6400. The substrate may conform to one or more anaerobic biodegradability standards such as ISO 15985 or ASTM D5511. The substrate may conform to one or more aerobic biodegradability standards such as ISO 17556 or ASTM D5988. The cleansing article may be a wet wipe, also known as a moist towelette, such as a disinfectant wipe, a wipe for household surfaces, a toilet wet wipe, a baby wipe or a make-up removal wipe. The composition or article of the first or second aspects may be suitable for personal care, household cleaning and / or automotive detailing / valeting. The cleansing article of the second aspect may be suitable for personal cleaning. Thus, the cleansing article of the second aspect may be a personal care cleansing article. The cleansing article of the second aspect may be suitable for household cleaning. Thus, the cleansing article of the second aspect may be a household cleansing article. The cleansing article of the second aspect may be suitable for automotive cleaning. Thus, the cleansing article of the second aspect may be an automotive cleansing article. Personal care cleansing compositions or articles may include those for cosmetic use, sanitary use and / or use on infants. According to a third aspect of the invention, there is provided a method ofcleaning at least a portion of a surface, wherein the method comprises contacting the portion of the surface with the cleansing composition of the first aspect or the cleansing article of the second aspect. According to a fourth aspect of the invention, there is provided a use of a cleansing composition or cleansing article according to the first or second aspects to provide cleaning to at least a portion of a surface. Features of the cleansing composition or cleansing article in the third and fourth aspects are as disclosed herein in relation to the first and second aspects. The method of the third aspect or use of the fourth aspect of the present invention provide cleaning. Said cleaning may comprise at least the partial removal of a substance from the surface, preferably wherein the substance is an oily substance. The substance may be a form of soil or mixture of thereof. Suitable substances may include, for example, food, animal or human bodily fluids or egesta, oils, waxes, paints, cosmetics, dust, and the like. The substance may include human bodily fluids or egesta, such as urine, blood, faeces, perspiration and / or vomit. Suitably, the substance comprises a cosmetic composition such as foundation, mascara, lipstick, rouge, concealer, eye shadow or eyeliner. More preferably, the substance is a waterproof cosmetic composition. Waterproof cosmetic compositions are particularly challenging to remove, especially with aqueous cleansing compositions. The substance may be a cosmetic composition, preferably wherein the cosmetic composition is waterproof. The surface to which the method or use of the third or fourth aspects are applied may be a household surface or an automotive surface. Where the surface is a household surface it may include surfaces found in a house, such as kitchenware (for example cutlery, crockery, cookware and / or glassware), a work-top, sink, bath, oven, hob, refrigerator, shower, hard floor, window windowsill, toilet and / or toilet-seat. Where the surface is kitchenware, the method or use of the third or fourth aspects may be a method, or use in a method, of automatic dishwashing. Such a method may comprise placing the surface in an automatic dishwasher and contacting at least a portion of the surface with the composition of the first aspect. The composition of the first aspect may be contacted with at least a portion of the surface before a wash cycle (for example as part of a pre-treatment step), during a wash cycle and / or after a wash cycle (for example as part of a rinse step) of the automatic dishwasher. Where the cleansing composition is a rinse aid composition, it is preferably contacted with at least a portion of the surface after a wash cycle (for example as part of a rinse step). Where the cleansing composition is an automatic dishwashing composition, it is preferably contacted with at least a portion of the surface before and / or during a wash cycle. In such methods of automatic dishwashing, the composition may be diluted in the automatic dishwasher prior to contact with at least a portion of the surface. Where the surface is an automotive surface, it may include interior surfaces such as a dashboard, window interior, upholstery and / or a steering wheel, as well as exterior surfaces of the car. The surface to which the method or use of the third or fourth aspects are applied may be a natural or biological surface. Suitably, the surface is skin or hair, preferably where the skin or hair is human skin or hair. The human skin or hair may suitably be facial skin, eye brows, eye lashes and / or hair (for example, head hair or facial hair, preferably head hair). According to a fifth aspect of the invention, there is provided a method of forming a cleansing article according to the second aspect, the method comprising impregnating the fibrous substrate with the cleansing composition. Features of the cleansing article in the fifth aspect are as disclosed herein in relation to the second aspect. The method of the fifth aspect may further comprise removing excess cleansing composition, for example with a roller or scraper. The method of the fifth aspect may comprise applying an amount of the cleansing composition to the fibrous substrate. Any suitable amount may be applied, for example from 50 to 400 g ofcleansing composition per m2 of substrate. Preferably, from 100 to 300 g ofcleansing composition is applied per m2 of substrate. According to a sixth aspect of the invention, there is provided a kit comprising a cleansing composition according to the first aspect and a fibrous substrate to which the cleansing composition may be applied. The fibrous substrate may be as described in relation to any other aspect of the present invention. Features of the cleansing composition in the sixth aspect are as disclosed herein in relation to the first aspect. The kit of the sixth aspect may comprise instructions, for example instructions for the consumer to carry out the method of the fifth aspect. According to a seventh aspect of the invention, there is provided a product comprising the cleansing composition or cleansing article according to the first or second aspects and packaging for the cleansing composition orcleansing article. Features of the cleansing composition or cleansing article in the seventh aspect are as disclosed herein in relation to the first and second aspects. The invention will now be further described with reference to the following non-limiting examples. Examples Example 1 Compositions 1 to 6 were prepared by mixing of the surfactant components and dilution with deionised water as shown in Table 1. The pH of each composition was adjusted by addition of either citric acid (50 wt% solution) or NaOH (25 wt% solution) to a pH of 5.2. The sophorolipid was supplied as a 60 wt% active solution with an acid: lactone ratio of 70:30 and a pH of 7.5. Compositions 1 to 6 were tested for foam height and clarity according to the methods below. The results are shown in Table 1. Foam Testing The equipment used to conduct the foam tests was a 15 mL measuring vial with a numerical scale. Using an autopipette, 3.0 mL of each composition was added to the measuring vial. The vials were sealed and shaken manually 20 times. Images of the vials were taken and the resultant (i.e. initial) foam height was measured immediately in mm. A foam height of 3 mm or less was considered to be “low foaming”. Clarity Testing The clarity of each of the compositions was assessed by eye and rated on a scale from “clear” to “hazy”. A “clear” appearance is desirable. Table 1 Composition Taurate or comparative surfactant Sophorolipid (wt% active) Taurate or comparative surfactant (wt% active) Foam Height (mm) Clarity 1 Sodium N-Methyl Oleoyl Taurate1 0.9 0.1 1.5 clear 2 Sodium N-Methyl Oleoyl Taurate1 0.5 0.5 2.5 clear 3 Sodium N-Methyl Oleoyl Taurate1 0.1 0.9 3.0 clear 4* Cocamidopropyl Betaine2 0.9 0.1 4.0 hazy 5* Cocamidopropyl Betaine2 0.5 0.5 5.0 clear 6* Cocamidopropyl Betaine2 0.1 0.9 6.0 clear *Comparative examples [1] Added as a commercially available solution containing 29-33 wt% active taurate and 4.5-7.5 wt% NaCI. [2] Added as a commercially available solution containing 41-43 wt% total solids, with a maximum NaCI content of 7.5 wt%. Compositions 1 to 6 were visually assessed to have a water-like viscosity. The compositions 1 to 3 comprising a sophorolipid surfactant and a taurate surfactant showed low foam heights while maintaining clarity, in contrast to the comparative examples. Example 2 Compositions 7 to 15 were prepared by mixing of the surfactant components and dilution with deionised water as shown in Table 2. The pH of each composition was adjusted by addition of either citric acid (50% solution) or NaOH (25% solution) to a pH of 5.2. The sophorolipid was supplied as a 60 wt% active solution with an acid: lactone ratio of 70:30 and a pH of 7.5. Compositions 7 to 15 were visually assessed to be clear and water-like. Compositions 7 to 15 were tested for cleaning performance on hair according to the method below. The results are shown in Table 2. Cleaning testing on hair Blond hair switches (4 cm length, 0.5 cm width, 0.35 g weight) were used fortesting. Each switch was treated with black waterproof mascara by swiping each side 5 times with the mascara brush. The mascara was massaged into the hair to make sure it was evenly distributed. The mascara used was Revlon 24 hour waterproof black mascara. After application the switches were allowed to dry for 20 minutes at room temperature. Each composition was pipetted into a separate test tube (15 mL per tube). 1 hair switch was added to each tube and left for 10 minutes at room temperature. The hair switches were then removed, excess liquid squeezed out and the switch placed on a paper towel to dry at room temperature. Mascara removal was measured using a calibrated Micromatch Plus colourimeter. The measurement used was for white colour such that the blonde switch was high in white colour and the black mascara applied hair switch was low in white colour. The higher the colour reading of the switches the more mascara removal and better the cleaning performance. The untreated (clean) hair gave a white value of 62.60. Therefore a value of 62.60 shows complete cleaning. The hair treated with mascara gave a white value of 27.59. Therefore a value of 27.59 shows no cleaning effect. Table 2 Composition Sophorolipid (wt% active) Sodium N-Methyl Oleoyl Taurate (wt% active) White Value of Hair Standard Deviation 7* 0.0 0.0 30.40 1.67 8 0.9 0.1 43.76 3.34 9 0.5 0.5 55.60 1.52 10 0.4 0.6 52.80 1.92 11 0.3 0.7 54.44 2.66 12 0.2 0.8 52.20 1.10 13 0.1 0.9 51.20 3.42 14* 1.0 0.0 42.17 2.07 15* 0.0 1.0 50.40 0.92 Comparative examples Compositions 8 to 13 comprising sophorolipid and sodium N-methyl oleoyl taurate showed equivalent or improved cleaning when compared with the taurate surfactant or sophorolipid alone. In particular, a weight ratio of between 1:1 and 3:7 (sophorolipid to taurate surfactant) showed substantially improved cleaning compared with taurate surfactant alone. Example 3 Wet wipe cleaning on hair A wet wipe substrate measuring 17 cm x 18 cm was loaded with composition 9 (see table 2) at a loading of approximately 5 g per sheet. Blond hair switches were treated with black mascara as in Example 2. The treated hair switches were cleaned using the wet wipe loaded with composition 9 which was consistently pulled through the wet wipe. This composition was compared with Boots branded wet wipes and Simple® branded wet wipes, which do not include a biosurfactant. Boots branded wet wipes are believed to comprise PEG6 Caprylic / capric glycerides, polysorbate 20 and PEG35 castor oil, and Simple® wet wipes are believed to comprise Cetearyl Isononoate, Ceteareth 20, Cetearyl alcohol, Glyceryl Stearate and Ceteareth 12. A qualitative test showed that the composition containing a sophorolipid biosurfactant and a taurate surfactant performed better on detergency of mascara from hair than the commercially available wipes. Example 4 Wet wipe cleaning on skin Test compositions were prepared as in Examples 1 and 2 (and made to 100wt% with deionised water as in those examples). For each test composition, a wet wipe substrate measuring 17 cm x 18 cm was loaded with 5g of the composition to produce a wet wipe. Commercially available Boots and Simple® brand wet wipes were used as supplied. Commercially available test makeup compositions were used as supplied. For each wet wipe tested, a sample of Vitro skin® (skin-like substrate available from Florida Suncare Testing Inc.) was divided into 2 cm2 test squares using an adhesive template. 5 mg of test makeup (described below) was added to each test square and evenly spread. The makeup was allowed to dry for 30 minutes, and the adhesive template removed. When the makeup was dry, an initial colour measurement was taken using a Micromatch Plus hand-held colourimeter. Each test square was manually wiped 10 times with the wet wipe, trying to keep the force and speed consistent. The make-up films were then reanalysed with the Micromatch Plus colourimeter. The makeup data before and after was recorded and the difference in the colour value recorded as the detergency of make-up from the Vitro skin®. The results for each make-up type tested are shown below in Tables 3 to 5. 1) Waterproof Black Mascara (Big Drama) The Micromatch Plus colourimeter was set to measure L-value (white to black scale with 100 being white and 0 being black). An increasing L-value shows decreasing black mascara presence and vice versa. The results are shown in Table 3. Table 3 Test Composition L-value before cleansing L-value after cleansing Difference in L-value Water* 21.3 26.2 4.9 Simple® Wipes* 21.1 32.9 11.8 Boots Wipes* 20.9 33.0 12.1 Sophorolipid (0.5 wt%), Sodium N-Methyl Oleoyl Taurate (0.5 wt%) 21.0 33.3 12.3 Sophorolipid (0.6 wt%), Sodium N-Methyl Oleoyl Taurate (0.4 wt%) 21.3 33.4 12.1 Sophorolipid (1 wt%)‘ 22.7 30.4 7.7 Sodium N-Methyl Oleoyl Taurate (1 wt%)‘ 21.9 27.0 5.2 ‘Comparative examples The greater the difference in L-value the greater the cleansing of mascara from Vitro skin®. The cleansing compositions of the invention provided comparable or improved cleansing compared with the comparative examples. 2) Waterproof Red Lipstick (Rimmel) The Micromatch Plus colourimeter was set to measure a-value (red to green scale with 100 being red and 0 being green). A decreasing a-value shows decreasing red lipstick and vice versa. The results are shown in Table 4. Table 4 Test Composition a-value before cleansing a-value after cleansing Difference in a-value Water* 48.7 48.0 0.7 Simple® Wipes* 48.7 40.5 8.2 Sophorolipid (0.5 wt%), Sodium N-Methyl Oleoyl Taurate (0.5 wt%) 49.5 39.2 10.3 Sophorolipid (1 wt%)* 48.4 48.0 0.4 Sodium N-Methyl Oleoyl Taurate (1 wt%)* 49.6 44.1 5.5 ‘Comparative The greater the difference in a-value the greater the cleansing of lipstick from Vitro skin®. The cleansing compositions of the invention provided comparable or improved cleansing compared with the comparative examples. 3) Foundation (L’Oreal Infallible 24 hour Matte) The Micromatch Plus colourimeter was set to measure L-value (white to black scale with 100 being white and 0 being black). An increasing L-value shows decreasing foundation presence and vice versa. The results are shown in Table 5. Table 5 Test Composition (wt% active) L-value before cleansing L-value after cleansing Difference in L-value Water* 38.4 40.2 1.8 Simple® Wipes* 38.0 39.7 1.7 Boots Wipes* 37.8 40.0 2.2 Sophorolipid (0.5 wt%), Sodium N-Methyl Oleoyl Taurate (0.5 wt%) 38.3 45.4 7.2 Sophorolipid (0.6 wt%), Sodium N-Methyl Oleoyl Taurate (0.4 wt%) 37.4 43.4 6.0 Sophorolipid (0.7 wt%): Sodium N-Methyl Oleoyl Taurate (0.3 wt%) 38.1 41.3 3.3 Sophorolipid (1 wt%)* 39.0 47.3 8.3 Sodium N-Methyl Oleoyl Taurate (1 wt%)* 37.8 40.9 3.1 Comparative The greater the difference in L-value the greater the cleansing of foundation from Vitro skin®. The cleansing compositions of the invention provided comparable or improved cleansing compared with the comparative examples. Example 5 Abrasion scrub test method Test compositions were prepared as in Examples 1 and 2 (and made to 100wt% with deionised water as in those examples). This method uses a Sheen abrasion scrub tester for evaluating washing performance Make-up (Maybelline Lash Sensational Sky-High Waterproof Mascara Black) was evenly applied to Vitro skin® and allowed to dry for 30 minutes. The Vitro skin® was then cut into 4x4cm test squares and each individual test square was applied onto double sided Sellotape. A colour measurement (L value) was then taken for each test square using a using Micromatch Plus hand-held colourimeter. Test articles were prepared by applying a test composition, dosed at 264 wt%, to 100% Viscose wipes. The wipes were then sealed in clingfilm to allow solution to wet the wipes and prevent drying. The wipes were then folded twice and fixed to the scrub tester feet. The Vitro skin® was taped to the scrub tester base. The scrub tester was set to zero counter and the start button pressed set to 30 counts. After this the stop button was pressed and the tape and Vitro skin® was carefully peeled off the scrub tester base, allowed to dry and the colour (L-value) was measured 5 using the Micromatch Plus handheld colourimeter. The results are shown in Table 6 Table 6 Test composition (wt% active) L-value before cleansing L-value after cleansing Difference in L Value Water* 51.31 51.88 0.57 Boots Wipes* 54.11 57.98 3.87 Simple Wipes* 50.68 55.38 6.33 -|4** 50.88 57.21 4.70 15** 48.04 58.02 9.98 Sophorolipid (0.7 wt%), Sodium Methyl Oleoyl Taurate (0.3 wt%) 50.50 62.10 11.60 Sophorolipid (0.5 wt%), Sodium Methyl Oleoyl Taurate (0.5 wt%) 47.18 65.48 18.30 10 *Comparative **Comparative as set out in table 2 The present invention is not restricted to the details of the foregoing embodiment(s). The invention extends to any novel one, or any novel combination, of the features disclosed in this 15 specification (including any accompanying claims, abstract and drawings), or to any novel one, or any novel combination, of the steps of any method or process so disclosed.

Claims

1. A cleansing composition comprising one or more biosurfactants and one or more taurate surfactants.

2. The cleansing composition according to claim 1, wherein the one or more biosurfactants are selected from one or more of a glycolipid, a lipopeptide, a phospholipid and a polymeric biosurfactant.

3. A cleansing composition according to claim 2, wherein the one or more biosurfactants are one or more glycolipids.

4. A cleansing composition according to claim 3, wherein the one or more glycolipids are selected from one or more of a rhamnolipid, a trehalolipid, a sophorolipid and a mannosylerythritol lipid, preferably wherein the one or more glycolipids are one or more sophorolipids.

5. The cleansing composition according to any preceding claim, wherein the one or more taurate surfactants are each of formula (I):0 R2 R4R1---C---N---C---C---SO3XR6 R3 R5 (i)wherein X is hydrogen, a metal ion or an optionally substituted ammonium ion; R1 represents an optionally substituted C3-C35 hydrocarbyl group; and each of R2, R3, R4, R5 and R6 independently represents hydrogen or a C1-C4 alkyl group.

6. The cleansing composition according to claim 5, wherein the one or more taurate surfactants are each of the formula (I) wherein X is a metal ion; R1 represents an optionally substituted C13-C21 hydrocarbyl group; and each of R2, R3, R4, R5 and R6 independently represents hydrogen or methyl.

7. The cleansing composition according to any preceding claim, wherein the weight ratio of the one or more biosurfactants to the one or more taurate surfactants is from 9:1 to 1:9, preferably from 1.5:1 to 1:9, most preferably from 1.5:1 to 3:

78. The cleansing composition according to any preceding claim, wherein the combined amount of the one or more biosurfactants and the one or more taurate surfactants is from 0.01 to 20 wt%, for example from 0.01 to 10 wt% based on the total weight of the composition.

9. The cleansing composition according to any preceding claim, wherein the one or more biosurfactants are present in an amount of from 0.1 to 10 wt% based on the total weight of the composition and / or wherein the one or more taurate surfactants are present in an amount of from 0.1 to 10 wt% based on the total weight of the composition.

10. The cleansing composition according to any preceding claim, further comprising water.

11. The cleansing composition according to any preceding claim, further comprising one or more additional components selected from a pH modifier, a preservative, a fragrance and an antibacterial agent.

12. The cleansing composition according to any preceding claim, wherein the composition is low foaming.

13. The cleansing composition according to any preceding claim, wherein the composition is a personal care cleansing composition, a household care cleansing composition (preferably an auto-dishwash composition) or an automotive cleansing composition.

14. The cleansing composition according to any preceding claim, wherein the composition is clear to the human eye.

15. A cleansing article comprising a fibrous substrate impregnated with a cleansing composition according to any of claims 1 to 14.

16. The cleansing article according to claim 15, wherein the fibrous substrate is at least partially saturated with the cleansing composition, preferably wherein the fibrous substrate is fully saturated with the cleansing composition.

17. The cleansing article according to claim 15 or 16, wherein the fibrous substrate comprises cotton, cellulose, bamboo, polyester, polypropylene, wood pulp and / or rayon.

18. A method of cleaning at least a portion of a surface, wherein the method comprises contacting the portion of the surface with the cleansing composition or cleansing article according to any of claims 1 to 17.

19. Use of a cleansing composition or cleansing article according to any of claims 1 to 17 to provide cleaning at least a portion of a surface.

20. The method or use according to claim 18 or 19, wherein the cleaning comprises at least the partial removal of a substance from the surface, preferably wherein the substance is an oily substance.

21. The method or use according to claim 20, wherein the substance is a cosmetic composition, preferably wherein the cosmetic composition is waterproof.

22. The method or use according to any of claims 18 to 21, wherein the surface is skin or hair, preferably wherein the skin or hair is human skin or hair.

23. A method of forming a cleansing article according to any of claims 15 to 17, the method comprising impregnating the fibrous substrate with the cleansing composition.

24. A kit comprising a cleansing composition according to any of claims 1 to 14 and a fibrous substrate to which the cleansing composition may be applied.

25. A product comprising the cleansing composition or cleansing article according to any of claims 1 to 17 and packaging for the cleansing composition orcleansing article.