Uses and compositions

Abstract

A method, the use of, or a composition for treating a keratinous material growing on a body, comprising contacting the keratinous material with a polyol ester, wherein the polyol ester is the reaction

Description

The appearance, condition and cleanliness of their hair is of great significance to many people. For example, frizziness of hair is a concern, especially for people who have wavy or curly hair and / or are in humid conditions. Similarly, many people are concerned with the appearance, condition and cleanliness of the hair and of their animals (including pets). People are also concerned with the appearance of their nails, and with the appearance of the nails, horns, claws or hooves of their animals. There is therefore a vast array of personal care products available, for both humans and animals (including pets), offering a wide range of benefits to hair, nails, horns, claws and hooves. These products contain many different components, including silicone compounds to impart lubrication and / or softening properties. However changing requirements, for example due to changing fashion trends, new interests in animal care and technological developments for example in hair styling appliances means that there is a continuing need for different and improved personal care compositions (such as hair care compositions). Furthermore the environmental impact of chemicals used in personal care compositions is of increasing importance to consumers. For example, there are a number of disadvantages associated with the use of silicone compounds, including their low biodegradability, which has led to environmental concerns. It is thus an object of the invention to provide means for treating (including enhancing) at least one property of a keratinous material, such as hair. It is another object of the invention to provide compositions (such as hair care compositions) that are more environmentally acceptable and / or biodegradable whilst having equal or improved properties compared to known compositions (such as hair care compositions.) Summary of the Invention According to aspects of the present invention, there is provided a method, use, composition and packaged keratinous material treatment product as set forth in the appended claims. Other features of the invention will be apparent from the dependent claims, and from the description which follows. The inventors have identified that certain polyol esters can treat and / or enhance at least one property of a keratinous material, whilst also being environmentally acceptable and / or biodegradable. According to a first aspect of the invention, there is provided a method of treating a keratinous material growing on a body, the method comprising contacting the keratinous material with a polyol ester, wherein the polyol ester is the reaction product of reactants comprising one or more first reactants and one or more second reactants, wherein the or each first reactant is a monocarboxylic acid or ester thereof and the or each second reactant is a polyol. According to a second aspect of the present invention there is provided a use of a polyol ester to treat a keratinous material growing on a body, wherein the polyol ester is the reaction product of reactants comprising one or more first reactants and one or more second reactants, wherein the or each first reactant is a monocarboxylic acid or ester thereof and the or each second reactant is a polyol. According to a third aspect of the invention, there is provided a composition for treating a keratinous material growing on a body, wherein the composition comprises one or more polyol esters, and wherein the or each polyol ester is the reaction product of reactants comprising one or more first reactants and one or more second reactants, wherein the or each first reactant is a monocarboxylic acid or ester thereof and the or each second reactant is a polyol. According to a fourth aspect of the invention, there is provided a packaged keratinous material treatment product comprising packaging, a composition housed in the packaging and instructions for use of the composition in the treatment of a suitable keratinous material growing on a body, wherein the composition comprises one or more polyol esters, and wherein the or each polyol ester is the reaction product of reactants comprising one or more first reactants and one or more second reactants, wherein the or each first reactant is a monocarboxylic acid or ester thereof and the or each second reactant is a polyol. Other features of the invention will be apparent from the dependent claims, and from the description which follows. Features described in relation to the second, third and fourth aspects may have any of the suitable features and advantages described in relation to the first aspect. Detailed Description of the Invention Unless otherwise stated, the following terms used in the specification and claims have the meanings set out below. The terms “alkyl” and “alkylene” include both straight and branched chain alkyl and alkylene 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, “C3-30 alkyl” includes C6-24 alkyl, Ce-s alkyl, propyl, isopropyl and t-butyl. The term “alkenyl” includes both straight and branched chain alkenyl groups. 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, “C3-30 alkenyl” includes C6-24 alkenyl, Ce-s alkenyl, propenyl and isopropenyl. Herein C3-30 means a group having from 3 to 30 carbons atoms therein, for example having 3, 4, 5 etc up to 30 carbon atoms. 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. 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’. 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. The term “reactant” is used herein to refer to a compound comprising at least one reactive functional group. As reported herein, the number average molecular weight was determined by gel permeation chromatography using a polystyrene standard according to ASTM D6579-11 (“Standard Practice for Molecular Weight Averages and Molecular Weight Distribution of Hydrocarbon, Rosin and Terpene Resins by Size Exclusion Chromatography”. UV detector; 254 nm, solvent: unstabilised THF, retention time marker: toluene, sample concentration: 2mg / ml). According to a first aspect of the invention, there is provided a method of treating a keratinous material growing on a body, the method comprising contacting the keratinous material with a polyol ester, wherein the polyol ester is the reaction product of reactants comprising one or more first reactants and one or more second reactants, wherein the or each first reactant is a monocarboxylic acid or ester thereof and the or each second reactant is a polyol. According to a second aspect of the present invention there is provided a use of a polyol ester to treat a keratinous material growing on a body, wherein the polyol ester is the reaction product of reactants comprising one or more first reactants and one or more second reactants, wherein the or each first reactant is a monocarboxylic acid or ester thereof and the or each second reactant is a polyol. Suitable features of the first and second aspects will now be described. The method and use of the first and second aspects are for treating a keratinous material growing on a body, such as a human or animal body. The polyol ester as disclosed herein may be used to treat any suitable keratinous material. Preferably the keratinous material comprises keratinous fibres. The keratinous material may, for example, be hair, nails, horns, claws or hooves. Preferably the keratinous material is hair. The hair may be human or animal hair. The hair may be scalp hair, eyebrows, eyelashes, beard hair, or body hair, for example on a human. The hair may be under-hair, wool or fur, for example on an animal. The hair may have been artificially coloured, such as by being dyed, bleached or pigmented. The hair may be human hair. The hair may be textured hair, such as Afro-Caribbean hair. Thus, the method of the first aspect may be a method of treating human hair growing on the body. The use of the second aspect may be a use to treat human hair growing on the body. The hair may be animal hair. Thus, the method of the first aspect may be a method of treating animal hair growing on the body. The use of the second aspect may be a use to treat animal hair growing on the body. The method or use of the first or second aspect may be applied to wet or dry keratinous material, especially hair. References herein to treating a keratinous material, especially hair, are intended to refer to changing, for example by providing a beneficial effect to, and especially by enhancing, at least one property of a keratinous material (especially hair). References to changing, benefiting or enhancing a property of a keratinous material are intended to mean as compared to otherwise identical keratinous material that has not been treated with the polyol ester or composition as disclosed herein. Thus, the method of the first aspect preferably provides a benefit to the keratinous material treated. Suitably the method enhances at least one property of the keratinous material that is treated according to the method. Preferably, the method of the first aspect is a method of treating hair that provides a beneficial effect to the hair. Suitably it enhances at least one property of the hair. Thus, the use of the second aspect preferably provides a benefit to the keratinous material treated. Suitably the use enhances at least one property of the keratinous material that is treated according to the use. Preferably, the use of the second aspect is a use to treat hair that provides a beneficial effect to the hair. Suitably it enhances at least one property of the hair. The method and use of the first and second aspects may change, provide a beneficial effect to or enhance any suitable property of the keratinous material (especially hair). The change, such as the benefit or enhancement, may be detectable by a visual inspection and / or may be a measurable change according to methods known in the art. The property may be a conditioning effect. For example, the property of the keratinous material (especially hair) that may be changed, beneficially affected or enhanced may be one or more of the following: • reduction in frizziness • shine • gloss • softness • silkiness • moisturise level • thermal durability • protection against damage • strength • combability • smoothness • drying time • colour retention For example, the property of the keratinous material (especially hair) that may be changed, beneficially affected or enhanced may be one or more of the following: • reduction in frizziness • shine • gloss • softness • silkiness • moisturise level • thermal durability • protection against damage • strength • combability • smoothness • drying time Preferably, the property of the keratinous material (especially hair) that may be changed, beneficially affected or enhanced may be one or more of the following: • reduction in frizziness • softness • silkiness • moisturise level • thermal durability • protection against damage • strength • combability • smoothness • drying time • colour retention Preferably, the property of the keratinous material (especially hair) that may be changed, beneficially affected or enhanced may be one or more of the following: • reduction in frizziness • silkiness • moisturise level • thermal durability • protection against damage • strength • smoothness • drying time • colour retention More preferably, the property of the keratinous material (especially hair) that may be changed, beneficially affected or enhanced may be one or more of the following: • reduction in frizziness • combability Even more preferably, the property of the keratinous material (especially hair) that may be changed, beneficially affected or enhanced may be a reduction in frizziness. It has been surprisingly found that the method and use of the first and second aspects can significantly change, benefit or enhance the keratinous material (especially hair). This change, benefit or enhancement may be temporary, permanent or semi-permanent. The change, benefit or enhancement may prevent an undesirable property occurring in the keratinous material and / or may reduce the occurrence of an undesirable property. Suitably, the method and use of the first and second aspects may provide a temporary change, benefit or enhancement to a property of the keratinous material (especially hair). A temporary change in the property of the keratinous material (especially hair) may be due to the polyol ester as defined herein coating the surface of the keratinous material (especially hair) but forming a weak interaction such that the polyol ester can be easily washed or brushed away. In some preferred embodiments the method and use of the first and second aspects may provide a longer lasting change, benefit or enhancement to the keratinous material (especially hair), for example a wash-durable benefit. The method and use of the first and second aspects may change, benefit or enhance the keratinous material (especially hair) by providing a conditioning effect thereto. Any suitable conditioning effect may be provided. Examples of suitable conditioning effects may include shine, gloss, softness, silkiness, moisture level, combability and / or smoothness (especially softness, silkiness, moisture level, combability and / or smoothness). The method and use of the first and second aspects may change, benefit or enhance the keratinous material (especially hair) by providing a reduction in frizziness thereto, i.e. by providing an anti-frizz effect. References to an anti-frizz effect are intended to mean that frizz in the keratinous material (especially hair) is reduced or removed. References to keratinous material (such as hair) that is frizzy means that the material (such as hair) contains short strands that stick up and project away from the main body of the material (such as hair) and / or that the material (such as hair) contains strands, for example of wavy or curly material (such as hair), that do not align with others or form a defined wave or curl. The anti-frizz effect may be detectable by a visual inspection and / or may be measurable using well known methods in the art (for example as disclosed herein, such as in the examples section). The method and use of the first and second aspects may provide a reduction in frizziness of at least 55%, preferably at least 75%, for example at least 95% after 24 hours as measured according to the test method disclosed in the examples section herein. The method and use of the first and second aspects may change, benefit or enhance the keratinous material (especially hair) by providing improved shine or gloss thereto. Rating systems for assessing shine and gloss are known in the art. A suitable system to calculate shine in a reproducible manner is the Reich-Robbins lustre value. The method and use of the first and second aspects may benefit the keratinous material (especially hair) by providing improved softness thereto. The softening may be provided by depositing the polyol ester onto the keratinous material (especially hair). Suitable methods for assessing the softness of the keratinous material are known in the art. The method and use of the first and second aspects may benefit the keratinous material (especially hair) by providing improved silkiness thereto. The method and use of the first and second aspects may benefit the keratinous material (especially hair) by providing improved moisture levels (or moisturisation) thereto. The method and use of the first and second aspects may benefit the keratinous material (especially hair) by providing improved thermal durability thereto. The method and use of the first and second aspects may benefit the keratinous material (especially hair) by providing improved combability thereto. Combability may be measured using a texture analyser, preferably using a texture analyser as described in the Examples. The method and use of the first and second aspects may benefit the keratinous material (especially hair) by providing protection to the keratinous material against damage. For example the method and use of the first and second aspects may protect against damage from heat or sunlight (for example by providing UV stability or protection). The method and use of the first and second aspects may benefit the keratinous material (especially hair) by providing improved strength thereto. The method and use of the first and second aspects may change, benefit or enhance the keratinous material (especially hair) by providing improved smoothness thereto. Rating systems for assessing smoothness are known in the art. The method and use of the first and second aspects may change, benefit or enhance the keratinous material (especially hair) by reducing the drying time of the keratinous material (especially hair). Rating systems for drying time are known in the art. Drying time may be measured as described in US 2014 / 140947 A1. Suitably, drying time may be determined by measuring the time needed to evaporate at least 85 wt% (for example 98 wt%) of added water on a swatch of pre-cleaned keratinous material (especially hair) when subjected to a preselected amount of heat (for example, 50°C). The swatch of keratinous material is suitably weighed when dry, after being submerged in water, and at regular intervals (for example, every 15 minutes) while being heated. The method and use of the first and second aspects may benefit the keratinous material (especially hair) by providing improved colour retention (i.e. combating colour loss). The method of the first aspect involves contacting the keratinous material (especially hair) with a polyol ester, wherein the polyol ester is the reaction product of reactants comprising one or more first reactants and one or more second reactants, wherein the or each first reactant is a monocarboxylic acid or ester thereof and the or each second reactant is a polyol. The keratinous material (especially hair) may be wet or dry when contacted with the polyol ester. Suitably the polyol ester is applied to the keratinous material (especially hair) and spread across the surface of the keratinous material (especially hair). Preferably when the keratinous material is hair, the polyol ester may be rubbed into the hair and / or it may be combed through the hair. The polyol ester may be contacted with the keratinous material (especially hair) permanently or fora limited period of time, after which it may be removed from the keratinous material (especially hair) using any suitable means. Suitably the polyol ester may be rinsed from the keratinous material (especially hair) using warm water. In some embodiments the polyol ester may be contacted with the keratinous material (especially hair), spread throughout and then immediately removed. The method of the first aspect may involve contacting the keratinous material (especially hair) with a polyol ester or composition as defined herein once or more than once. The method of the first aspect may involve contacting the keratinous material (especially hair) with a polyol ester as defined herein wherein the polyol ester is provided as a component of a composition, such as a composition for treating a keratinous material (especially hair). The method or use of the first aspect may involve heating the keratinous material (especially hair). Such a heating step may involve commonly used heating techniques such as blow drying, or using tongs, straighteners, curlers or hoods etc. For the avoidance of doubt, the method and use of the first and second aspects are cosmetic. They are not medical or therapeutic. According to a third aspect of the invention, there is provided a composition for treating a keratinous material growing on a body, wherein the composition comprises one or more polyol esters, and wherein the or each polyol ester is the reaction product of reactants comprising one or more first reactants and one or more second reactants, wherein the or each first reactant is a monocarboxylic acid or ester thereof and the or each second reactant is a polyol. The composition of the third aspect is suitably a cosmetic composition. Suitably, the method of the first aspect involves contacting the keratinous material with the composition of the third aspect. Thus preferred features of the polyol ester apply equally to the first and third aspects. According to a fourth aspect of the invention, there is provided a packaged keratinous material treatment product comprising packaging, a composition housed in the packaging and instructions for use of the composition in the treatment of a suitable keratinous material growing on a body, wherein the composition comprises one or more polyol esters, and wherein the or each polyol ester is the reaction product of reactants comprising one or more first reactants and one or more second reactants, wherein the or each first reactant is a monocarboxylic acid or ester thereof and the or each second reactant is a polyol. Suitably, the composition comprised in the product of the fourth aspect is the composition of the third aspect. The product of the fourth aspect is suitably a cosmetic product. The polyol ester as used herein (i.e. in relation to the method, use, composition and product of the first, second, third and fourth aspects) is the reaction product of reactants comprising one or more first reactants and one or more second reactants as defined herein. In other words, the polyol ester may be obtainable or obtained by reacting reactants comprising one or more first reactants and one or more second reactants as defined herein. By “polyol ester” we mean the ester of a polyol. The polyol may be partially or fully esterified. Preferably, the polyol ester is partially esterified. The partially esterified polyol ester comprises one or more hydroxy groups, such as two or more hydroxy groups. The polyol ester as used herein may be the reaction product of reactants consisting essentially of or consisting of one or more first reactants and one or more second reactants as defined herein. In other words, the polyol ester may be obtainable or obtained by reacting reactants consisting essentially of or consisting of one or more first reactants and one or more second reactants as defined herein. The first and second reactants may be reacted in any suitable molar ratio to make the polyol ester, as would be appreciated by a person skilled in the art. The first and second reactants may be reacted in a molar ratio of from 1:10 to 10:1, preferably from 1:6 to 6:1, for example from 1:3 to 3:1. Ratios refer to the total amounts of first reactants or second reactants if more than one first reactant or second reactant is present. The polyol ester may be prepared by any suitable method, as would be known to persons skilled in the art. References herein to a reaction product of reactants comprising the first and second reactants are intended to refer to a product of the reaction of reactants comprising the first and second reactants conducted in any suitable manner. For example, the reaction may occur between the first and second reactants in the absence of other reactant(s) or may occur in the presence of other reactant(s). References herein to a reactant are intended to refer to the compounds that react to form the polyol ester and are not intended to include a catalyst used in the reaction. The or each of the one or more first reactants used to make the polyol ester is a monocarboxylic acid or ester thereof. Mixtures of two or more different first reactants (i.e. different monocarboxylic acids or esters thereof) may be used to make the polyol ester. Any suitable monocarboxylic acid or ester thereof may be used to make the polyol ester, as would be understood by the person skilled in the art. The first reactant may be a monocarboxylic acid or an ester thereof. The monocarboxylic acid may be aliphatic or aromatic. The aliphatic monocarboxylic acid may be cycloaliphatic. The aliphatic monocarboxylic acid may be saturated or unsaturated. By the term “unsaturated” we mean that the monocarboxylic acid comprises one or more carbon-carbon double bonds. Preferably the monocarboxylic acid is aliphatic. Suitably, the monocarboxylic acid does not contain more than one hydroxy group. Preferably, the monocarboxylic acid does not contain any hydroxy groups. The monocarboxylic acid may contain from 2 to 40 carbon atoms, suitably from 4 to 30 carbon atoms, preferably from 6 to 20 carbon atoms, for example from 8 to 18 carbon atoms. The monocarboxylic acid may be a fatty acid. Examples of suitable monocarboxylic acids include hexanoic acid, octanoic acid, decanoic acid, lauric acid, myristic acid, myristoleic acid, palmitic acid, palmitoleic acid, stearic acid, oleic acid, elaidic acid, linoleic acid, linolelaidic acid, arachidic acid, arachidonic acid, behenic acid, and erucic acid. Preferably, the monocarboxylic acid is selected from hexanoic acid, octanoic acid, lauric acid, stearic acid, oleic acid, linoleic acid, or erucic acid. Erucic acid is a preferred monocarboxylic acid. The first reactant may be an ester of the monocarboxylic acid. The ester of the monocarboxylic acid is suitably a hydrocarbyl ester, such as an alkyl ester, an alkenyl ester, an aryl ester, an aralkyl ester, or an alkaryl ester. Preferably the ester is an alkyl ester. The alkyl ester is suitably formed by reacting the monocarboxylic acid with an alkanol. The alkanol suitably contains from 1 to 10 carbon atoms, such as from 1 to 6 carbon atoms, preferably from 1 to 4 carbon atoms. The alkanol is preferably methanol. The alkyl ester is preferably a methyl ester. The ester of the monocarboxylic acid may be a fatty acid methyl ester (FAME). The ester of the monocarboxylic acid may be selected from methyl hexanoate, methyl octanoate, methyl decanoate, methyl laurate, methyl myristate, methyl myristoleate, methyl palmitate, methyl palmitoleate, methyl stearate, methyl oleate, methyl elaidate, methyl linoleate, methyl linolelaidate, methyl arachidate, methyl arachidonate, methyl behenate, or methyl erucate. Preferably, the ester acid is selected from methyl octanoate, methyl laurate, methyl stearate, methyl oleate, methyl linoleate, or methyl erucate. More preferably, the ester of the monocarboxylic acid is selected from methyl laurate, methyl oleate, or methyl erucate. The monocarboxylic acid or the ester thereof may be selected from hexanoic acid, octanoic acid, decanoic acid, lauric acid, myristic acid, myristoleic acid, palmitic acid, palmitoleic acid, stearic acid, oleic acid, elaidic acid, linoleic acid, linolelaidic acid, arachidic acid, arachidonic acid, behenic acid, erucic acid, or an ester (preferably a methyl ester) thereof. The monocarboxylic acid or the ester thereof may preferably be selected from lauric acid, oleic acid, erucic acid, or an ester (preferably a methyl ester) thereof. The monocarboxylic acid or the ester thereof may preferably be selected from an ester (preferably a methyl ester) of lauric acid, oleic acid, or erucic acid. Preferably, the monocarboxylic acid or the ester thereof may be selected from erucic acid, hexanoic acid, methyl octanoate, lauric acid, methyl laurate, stearic acid, methyl stearate, methyl oleate, methyl linoleate, or methyl erucate (more preferably from erucic acid, methyl laurate, methyl oleate, or methyl erucate). Preferably, the monocarboxylic acid or the ester thereof may be selected from hexanoic acid, methyl octanoate, lauric acid, methyl laurate, stearic acid, methyl stearate, methyl oleate, methyl linoleate, or methyl erucate (more preferably from methyl laurate, methyl oleate, or methyl erucate). The monocarboxylic acid or ester thereof compounds discussed herein may be commercially available or may be prepared using procedures well known in the art. The or each of the one or more second reactants used to make the polyol ester is a polyol. Mixtures of two or more different second reactants (i.e. different polyols) may be used to make the polyol ester. Any suitable polyol may be used to make the polyol ester, as would be understood by the person skilled in the art. The term polyol is used to refer to any compound including two or more hydroxy (OH) functional groups. In some embodiments the or each polyol may comprise carbon, hydrogen and oxygen atoms, and optionally additionally nitrogen atoms. In other embodiments, the or each polyol may consist essentially of or consist of carbon, hydrogen and oxygen atoms. Suitable polyols for preparing the polyol ester may be compounds having from 2 to 10, preferably from 2 to 6, more preferably 2 or 3, hydroxy groups. Most preferred polyols have from 2 to 8 hydroxy groups. Suitable polyols may include one or more of a polyol of formula (I): H-(OR1)P-OH (I) wherein each R1 is independently an optionally substituted hydrocarbylene group and p is an integer of at least 1. When p is an integer of greaterthan 1, the polyol of formula (I) may comprise groups R1 that are all the same or may comprise groups R1 that are different. Suitably, each R1 in the formula (I) may be the same. Preferably p is an integer from 1 to 140, such as from 1 to 110, from 1 to 40 or from 1 to 10. For example, suitable polyols may include one or more of a polyol of formula (IA): H-(OR2)q-OH (IA) wherein each R2 is independently an optionally substituted alkylene group and q is an integer of at least 1. When q is an integer of greater than 1, the polyol of formula (IA) may comprise groups R2 that are all the same or may comprise groups R2 that are different. Suitably, each R2 in the formula (IA) is the same. Preferably q is an integer from 1 to 140, such as from 1 to 110, from 1 to 40 or from 1 to 10. When the polyol of formula (I) or (IA) contains a substituted hydrocarbylene or alkylene group, any suitable substituent may be present, such as for example a carboxy or amido substituent. The polyol of formula (IA) may have more than 2 hydroxy groups and the group R2 may be a hydroxy substituted alkylene group. Each hydroxy substituted alkylene group R2 may have 1,2 or more hydroxy groups. Each hydroxy substituted alkylene group R2 may preferably have 1 hydroxy group. The polyol of formula (IA) may have 2 hydroxy groups and the group R2 may be an optionally substituted alkylene group wherein the optional substituent is not hydroxy. The polyol of formula (I) or of formula (IA) may be a sugar derived compound in which R1 or R2 includes one or more hydroxy residues. The or each R1 or R2 may represent a cyclic alkylene unit. One or more heteroatoms (for example oxygen atoms) may be present in the cyclic alkylene unit. For example the unit may contain an ether linkage. Suitably the or each R1 or R2 may be one or more saccharide units or may be substituted with one or more saccharide units. Suitably the or each R1 or R2 may be an unsubstituted alkylene group. Preferably the or each R1 or R2 is an optionally substituted alkylene group having from 1 to 50, such as from 1 to 40, preferably from 1 to 30, more preferably from 1 to 20, suitably from 1 to 12 or from 1 to 10, for example from 2 to 6, carbon atoms. Preferably the or each R1 or R2 is an unsubstituted alkylene group having from 1 to 50, preferably from 1 to 20, more preferably from 1 to 12 or from 1 to 10, suitably from 2 to 6 carbon atoms. Each R1 or R2 may be straight chained or branched. Suitably the or each R1 or R2 may be an ethylene, propylene, butylene, pentylene, hexylene or dodecylene group. When R1 or R2 has more than 2 carbon atoms any isomer may be present. Preferably R1 or R2 is an ethylene or a propylene group, most preferably an ethylene group. When q is 1, R2 may be a group of formula (CH2)x wherein x is from 2 to 12, preferably from 3 to 12. Suitably when q is 1, R2 may be a straight chain or branched optionally substituted alkylene group and the polyol may be selected from ethylene glycol, propylene glycol, 1,3-propanediol, 1,2-butanediol, 1,3-butanediol, 1,4-butanediol, 2,3-butanediol, 1,6-hexanediol, 1,12-dodecanediol, trimethylolpropane, 2-ethyl-1,3,-hexanediol, 2,2-diethyl-1,3-propanediol, 2,2-bis(hydroxymethyl)propionic acid, pentaerythritol, sorbitol, xylitol, glycerol and neopentyl glycol. Suitably when q is 1, R2 may be a straight chain or branched alkylene group having from 2 to 12, preferably from 3 to 12, carbon atoms. Suitable compounds of this type include ethylene glycol, propylene glycol, 1,3-propanediol, 1,2-butanediol, 1,3-butanediol, 1,4-butanediol, 2,3-butanediol, 1,6-hexanediol, 1,12-dodecanediol, trimethylolpropane, 2-ethyl-1,3,-hexanediol, 2,2-diethyl-1,3-propanediol, pentaerythritol and neopentyl glycol. Suitably when q is 1, R2 may be a branched alkylene group having from 2 to 12, preferably from 3 to 12, carbon atoms. Suitable compounds of this type include propylene glycol, 1,2-butanediol, 1,3-butanediol, trimethylolpropane, 2-ethyl-1,3,-hexanediol, 2,2-diethyl-1,3-propanediol, pentaerythritol and neopentyl glycol. Suitably when q is 2 or more, the or each R2 may be a straight chain or branched alkylene group and the polyol may, for example, be selected from diglycerol, diethylene glycol, triethylene glycol, dipropylene glycol, tripropylene glycol, polyethylene glycol and polypropylene glycol (especially from polyethylene glycol and polypropylene glycol, most especially polypropylene glycol). Suitably when q is 2 or more, the or each R2 may be a straight chain or branched alkylene group having from 2 to 4, preferably 2 or 3, carbon atoms. Suitable compounds of this type include diethylene glycol, triethylene glycol, di propylene glycol, tripropylene glycol, polyethylene glycol (PEG), for example having a number average molecular weight of from 150 to 6000, and polypropylene glycol (PPG), for example having a number average molecular weight of from 400 to 2000. Suitable polyols may include one or more of PEG 6000, PEG 1500, PEG 1000, PEG 600, PEG 400, PEG 200, PPG 2000, PPG 1000 and PPG 425. The or each R1 or R2 may comprise a mixture of isomers. For example when R1 or R2 is propylene, the polyol may include moieties -CH2CH(CH3)- and -CH(CH3)CH2- in any order within the chain. R1 or R2 may comprise a mixture of different groups for example ethylene, propylene or butylene units. The or each R2 may be an ethylene, propylene or butylene group. For example, the or each R2 may be an n-propylene or n-butylene group or an isopropylene or isobutylene group. For example the or each R2 may be -CH2CH2-, -CH2CH(CH3)-, - CH(CH3)CH2-, CH2CH2CH2-, -CH2C(CH3)2-, -CH2CH2CH2CH2-, -CH(CH3)CH(CH3)- or-CH2CH(CH2CH3)-. Preferably R2 is selected from -CH2CH2-, -CH2CH2CH2-, -CH(CH3)CH2- or -CH2CH(OH)CH2, more preferably from -CH2CH2-, and-CH2CH2CH2-. Suitably the polyol of formula (I) or (IA) may be a sugar derived alcohol, for example, glucose, fructose, trehalose, sucrose, lactose, maltose or sorbitol, preferably sorbitol or sucrose (more preferably sucrose). Suitably the polyol of formula (I) may be selected from one or more of 1,12-dodecanediol, 1,6-hexanediol, trimethylolpropane, neopentyl glycol, polyethylene glycol (such as PEG 6000, PEG 1500, PEG 1000, PEG 600, PEG 400, PEG 200), polypropylene glycol (such as PPG 2000, PPG 1000, PPG 425, especially PPG 2000), sorbitol, trimethylolpropane and xylitol. Suitably, the polyol, for example of formula (I), may be an ester of glycerol (also known as a glyceride) and a hydroxycarboxylic acid. The ester of glycerol may be a mono-, di- or triglyceride, suitably a tri-glyceride. Suitably, the hydroxycarboxylic acid comprises one or more hydroxyl groups and one or more carboxylic acid groups. The hydroxycarboxylic acid may be a monocarboxylic acid comprising one or more hydroxyl groups. The hydroxycarboxylic acid may be of the formula R3COOH, wherein R3 is a hydroxyl-substituted hydrocarbyl group. R3 is suitably a hydroxy-substituted alkyl, alkenyl or alkaryl group, preferably a hydroxy-substituted alkyl or alkenyl group. R3 suitably comprises from 1 to 25 carbon atoms, preferably from 1 to 20 carbon atoms, more preferably from 1 to 17 carbon atoms. Suitably, the hydroxycarboxylic acid may be selected from glycolic acid, lactic acid, hydroxy butyric acid, hydroxyvaleric acid, hydroxycaproic acid, hydroxystearic acid (preferably 12-hydroxystearic acid), 2,2-bis(hydroxymethyl)propionic acid, mandelic acid or ricinoleic acid. Preferably, the hydroxycarboxylic acid or the cyclic ester thereof may be selected from glycolic acid, mandelic acid, ricinoleic acid, malic acid, tartaric acid or citric acid. More preferably, the hydroxycarboxylic acid or the cyclic ester thereof is ricinoleic acid. Preferably, when the polyol is an ester of glycerol, the polyol may be a mono-, di- or tri-glyceride of ricinoleic acid. Most preferably, when the polyol is an ester of glycerol, the polyol may be a tri-glyceride of ricinoleic acid, such as castor oil. Suitable polyols may include one or more of an alkoxylated polyol, such as an alkoxylated polyol of formula (I) or (IA). By an alkoxylated polyol of formula (I) or (IA) we mean the reaction product of a polyol of formula (I) or (IA) and one or more alkylene oxides, such as ethylene oxide or propylene oxide. Such alkoxylated polyols may include polyoxyethylene (80) sorbitan monooleate (also known as Tween® 80) and 2,4,7,9-tetramethyl-5-decyne-4,7-diol ethoxylate. Preferably, the or each polyol may be independently selected from castor oil, 1,6-hexanediol, sorbitol, neopentyl glycol and a polyalkylene glycol (such as PEG 200). When the or each polyol comprises carbon, hydrogen, oxygen and nitrogen atoms, the or each polyol may comprise two or more (such as 2 or 3) hydroxy groups and one or more (suitably one) amine groups. The amine groups may suitably be secondary or tertiary amines. Preferably the amine groups are tertiary amines. These polyols may be referred to herein as nitrogen containing polyols. For example, suitable nitrogen containing polyols may include one or more of a polyol of formula (II) or a derivative thereof: NR4R5R6 (II) wherein R4, R5 and R6 are each independently selected from hydrogen, hydroxyalkyl and hydrocarbyl, provided that at least two of R4, R5 and R6 represents a hydroxyalkyl group. Preferably, the at least two of R4, R5 and R6 that represent a hydroxyalkyl group are the same. For example, in the compounds of formula (II), R4 and R5 may each represent hydroxyalkyl and R6 may represent hydrogen, hydroxyalkyl or hydrocarbyl. In the formula (II), the hydroxyalkyl group may contain from 1 to 8, such as from 1 to 4, such as 2 or 3, carbon atoms. For example, each hydroxyalkyl group may be hydroxyethyl or hydroxypropyl, particularly hydroxyethyl. In the formula (II), the hydrocarbyl group (when present) may represent any suitable such group, such as an alkyl group, for example an alkyl group containing from 1 to 10, such as from 1 to 6 or from 1 to 4, carbon atoms. Thus, the hydrocarbyl group may represent a methyl, ethyl, propyl or butyl group (especially butyl or methyl, most especially methyl). For example, in the compounds of formula (II), R4 and R5 may each represent hydroxyalkyl and R6 may represent hydrogen, hydroxyalkyl or hydrocarbyl (especially hydrogen or hydrocarbyl, more especially hydrocarbyl). Preferably in the compounds of formula (II), R4 and R5 both represent hydroxyethyl and R6 represents hydrogen or hydrocarbyl, such as a hydrocarbyl group containing from 1 to 6, or from 1 to 4, carbon atoms. Preferably in the compounds of formula (II), R4 and R5 both represent hydroxyethyl and R6 represents hydrogen or an alkyl group containing from 1 to 6, or from 1 to 4, carbon atoms (especially methyl). Examples of suitable nitrogen containing polyols include N-methyl diethanolamine, N-butyl diethanolamine, triethanolamine and diethanolamine, and derivatives thereof. Preferred nitrogen containing polyols may include N-methyl diethanolamine and N-butyl diethanolamine (especially N-methyl diethanolamine), and derivatives thereof. References herein to nitrogen containing polyols include derivatives thereof, such as a corresponding quaternary compound. Thus, as example of a suitable derivative of a nitrogen containing polyol is tris(2-hydroxyalkyl)methylammonium compound, for example tris(2-hydroxyethyl)methylammonium methylsulfate, which is a quaternary ammonium salt of triethanolamine. Preferably, the or each nitrogen containing polyol may be independently selected from N-butyl diethanolamine, diethanolamine and N-methyl diethanolamine (especially N-methyl diethanolamine and N-butyl diethanolamine), and derivatives (for example quaternary ammonium salts) thereof. More preferably, the or each nitrogen containing polyol may be independently selected from N-butyl diethanolamine, diethanolamine and N-methyl diethanolamine (especially N-methyl diethanolamine and N-butyl diethanolamine). Further examples of suitable nitrogen containing polyols include those formed by reaction of a hydroxy substituted cyclic ester or cyclic carbonate, such as glycerol carbonate or gluconolactone, with a suitable primary or secondary amine compound, such as ethanolamine, dipropylamine, hexylamine, dodecylamine, phenethylamine, dipropylamine, ethylenediamine, or a polyether polyamine. Suitable polyether amines may include polyether monoamines (such as for example Jeffamine M-1000) and polyether polyamines (such as for example Jeffamine ED-600). As the skilled person would appreciate, the reaction of a hydroxy substituted cyclic ester or cyclic carbonate with a suitable primary or secondary amine compound will result in a ring opening reaction to form a compound such as a N-carbamoyl polyol or an amido polyol. The or each second reactant may be a polyol selected from one or more polyol of the formula (I) or (IA) as defined herein (including an ester of glycerol and a hydroxycarboxylic acid (such as castor oil)), one or more of an alkoxylated polyol of formula (I) or (IA) as defined herein, one or more nitrogen containing polyol as defined herein (including compounds of the formula (II)) and one or more polyol formed by reaction of a hydroxy substituted cyclic ester or cyclic carbonate with a suitable primary or secondary amine compound. The or each second reactant may be a polyol selected from one or more polyol of the formula (I) or (IA) as defined herein, one or more of an alkoxylated polyol of formula (I) or (IA) as defined herein, and one or more nitrogen containing polyol as defined herein (including compounds of the formula (II)). The or each second reactant may be a polyol selected from one or more polyol of the formula (I) or (IA) wherein each R1 or R2 are one or more alkylene groups or saccharide units, one or more of an alkoxylated polyol of formula (I) or (IA) as defined herein, and one or more nitrogen containing polyol of the formula (II) where R4 and R5 may each represent hydroxyalkyl and R6 represents hydrogen, hydroxyalkyl or hydrocarbyl. The or each second reactant may be a polyol selected from one or more polyol of the formula (I) or (IA) wherein each R1 or R2 are one or more alkylene groups or saccharide units, and one or more nitrogen containing polyol of the formula (II) where R4 and R5 may each represent hydroxyalkyl and R6 represents hydrogen, hydroxyalkyl or hydrocarbyl. Preferably, the or each second reactant may be a polyol selected from one or more polyol of the formula (I) or (IA) as defined herein (including an ester of glycerol and a hydroxycarboxylic acid (such as castor oil)), one or more of an alkoxylated polyol of formula (I) or (IA) as defined herein, one or more nitrogen containing polyol of the formula (II) as defined herein and one or more polyol formed by reaction of a hydroxy substituted cyclic ester or cyclic carbonate with a suitable primary or secondary amine compound. More preferably, the or each second reactant may be a polyol selected from one or more polyol of the formula (I) or (IA) as defined herein (such as an ester of glycerol and a hydroxycarboxylic acid , for example castor oil), and one or more nitrogen containing polyol of the formula (II) as defined herein. In one embodiment, the or each second reactant may be a polyol selected from one or more polyol of the formula (I) or (IA) as defined herein, such as an ester of glycerol and a hydroxycarboxylic acid (for example castor oil). In one embodiment, the or each second reactant may be a polyol selected from one or more polyol of the formula (I) or (IA) wherein each R1 or R2 are one or more alkylene groups or saccharide units. In another embodiment, the or each second reactant may be a polyol selected from one or more of an alkoxylated polyol of formula (I) or (IA) as defined herein. In one embodiment, the or each second reactant may be a polyol selected from one or more polyol of the formula (I) or (IA) as defined herein, such as an ester of glycerol and a hydroxycarboxylic acid (for example castor oil) and from one or more of an alkoxylated polyol of formula (I) or (IA) as defined herein. In another embodiment, the or each second reactant may be a polyol selected from one or more nitrogen containing polyol as defined herein (including compounds of the formula (11)). In one embodiment, the or each second reactant may be a nitrogen containing polyol of the formula (II) where R4 and R5 may each represent hydroxyalkyl and R6 represents hydrogen, hydroxyalkyl or hydrocarbyl. In another embodiment, the or each second reactant may be a polyol selected from one or more polyol formed by reaction of a hydroxy substituted cyclic ester or cyclic carbonate with a suitable primary or secondary amine compound. In one embodiment, the polyol ester may be the reaction product of reactants comprising one (i.e. a single) monocarboxylic acid or ester thereof and one (i.e. a single) polyol. In other embodiments, the polyol ester may be the reaction product of reactants comprising two different monocarboxylic acids or esters thereof and one (i.e. a single) polyol, or the polyol ester may be the reaction product of reactants comprising one (i.e. a single) monocarboxylic acid or ester thereof and two different polyols. In one embodiment, the polyol ester may be the reaction product of reactants consisting essentially of or consisting of one (i.e. a single) monocarboxylic acid or ester thereof and one (i.e. a single) polyol. In other embodiments, the polyol ester may be the reaction product of reactants consisting essentially of or consisting of two different monocarboxylic acids or esters thereof and one (i.e. a single) polyol, or the polyol ester may be the reaction product of reactants consisting essentially of or consisting of one (i.e. a single) monocarboxylic acid or ester thereof and two different polyols. The combined amount of the one or more first reactants and the one or more second reactants may be at least 50 mol%, suitably at least 75 mol%, preferably at least 90 mol%, for example at least 95 wt% of the reactants that are reacted to obtain the polyol ester. The polyol ester for use herein is suitably the reaction product of no more than four different reactants. Preferably, the polyol ester is the reaction product of no more than three different reactants. For example, the polyol ester may be the reaction product of two different first reactants and one second reactant as disclosed herein. In some preferred embodiments, the polyol ester is the reaction product of only two different reactants, i.e. one first reactant and one second reactant as disclosed herein (and no further reactants). The polyol esters may be prepared from the first and second reactants by any suitable method, as would be known to the person skilled in the art. The esterification reaction will typically be conducted in the presence of a suitable polyol esterification catalyst, such as tin(ll) ethylhexanoate, tin(ll) oxalate, p-toluenesulfonic acid, methanesulfonic acid, or sulfuric acid. The reaction may be carried out for any suitable length of time, such as at least 1 hour, preferably at least 3 hours, for example at least 5 hours. The reaction may be carried out at any suitable temperature, such as from 50 to 300°C, preferably from 100 to 200°C. References herein to a reactant are intended to refer to the compounds that react to form the polyol ester and are not intended to include a catalyst used in the reaction. Suitable molar ratios of the first and second reactants may be used to prepare the polyol esters. Suitably, the polyol ester is not further reacted after the reaction of the reactants. The one or more monocarboxylic acids or esters thereof and the one or more polyols may be reacted in a molar ratio of from 1:1 to 10:1, such as from 1:1 to 8:1, for example from 1:1 to 6:1. Ratios refer to the total amounts of monocarboxylic acids or esters thereof or polyols if more than one monocarboxylic acid or ester thereof or polyol is present. The one or more monocarboxylic acids or esters thereof and the one or more polyols may be reacted in a molar ratio of from 0.5:1 to 1.5:1, such as a molar ratio of 1:1. The one or more monocarboxylic acids or esters thereof and the one or more polyols may be reacted in a molar ratio of from 1.5:1 to 2.5:1, such as a molar ratio of 2:1. The one or more monocarboxylic acids or esters thereof and the one or more polyols may be reacted in a molar ratio of from 2.5:1 to 3.5:1, such as a molar ratio of 3:1. The one or more monocarboxylic acids or esters thereof and the one or more polyols may be reacted in a molar ratio of from 3.5:1 to 4.5:1, such as a molar ratio of 4:1. The one or more monocarboxylic acids or esters thereof and the one or more polyols may be reacted in a molar ratio of from 5.5:1 to 6.5:1, such as a molar ratio of 6:1. Suitably, at least one of the monocarboxylic acids or esters thereof may be a fatty acid having from 6 to 28 carbon atoms, such as from 10 to 22 carbon atoms, or an ester thereof. At least one of the monocarboxylic acids or esters thereof may be a saturated fatty acid having from 6 to 28 carbon atoms, such as from 10 to 22 carbon atoms, or an ester thereof. The polyol ester may be the reaction product of reactants comprising one or more first reactants and one or more second reactants, wherein the or each first reactant is a monocarboxylic acid or ester thereof that is a fatty acid having from 6 to 28 carbon atoms or a methyl ester thereof; and the or each second reactant is a polyol selected from one or more polyol of the formula (I) or (IA) wherein each R1 or R2 are one or more alkylene groups or saccharide units, and one or more nitrogen containing polyol of the formula (II) where R4 and R5 may each represent hydroxyalkyl and R6 represents hydrogen, hydroxyalkyl or hydrocarbyl. The polyol ester may be the reaction product of reactants consisting essentially of or consisting of one or more first reactants and one or more second reactants, wherein the or each first reactant is a monocarboxylic acid or ester thereof that is a fatty acid having from 6 to 28 carbon atoms or a methyl ester thereof; and the or each second reactant is a polyol selected from one or more polyol of the formula (I) or (IA) wherein each R1 or R2 are one or more alkylene groups or saccharide units, and one or more nitrogen containing polyol of the formula (II) where R4 and R5 may each represent hydroxyalkyl and R6 represents hydrogen, hydroxyalkyl or hydrocarbyl. The polyol ester may be the reaction product of reactants comprising one or more first reactants and one or more second reactants, wherein the or each first reactant is a monocarboxylic acid or ester thereof that is a fatty acid having from 6 to 28 carbon atoms or a methyl ester thereof; and the or each second reactant is a polyol selected from an ester of glycerol and a hydroxycarboxylic acid (such as castor oil); an alkoxylated polyol (such as Tween 80); a nitrogen containing polyol; and a polyol of formula (IA) wherein each R2 is independently an optionally substituted alkylene group and q is an integer of at least 1. The polyol ester may be the reaction product of reactants consisting essentially of or consisting of one or more first reactants and one or more second reactants, wherein the or each first reactant is a monocarboxylic acid or ester thereof that is a fatty acid having from 6 to 28 carbon atoms or a methyl ester thereof; and the or each second reactant is a polyol selected from an ester of glycerol and a hydroxycarboxylic acid (such as castor oil), an alkoxylated polyol (such as Tween 80), a nitrogen containing polyol, and a polyol of formula (IA) wherein each R2 is independently an optionally substituted alkylene group and q is an integer of at least 1. The polyol ester may be the reaction product of reactants comprising one or more first reactants and one or more second reactants, wherein the or each first reactant is a monocarboxylic acid or ester thereof that is a saturated fatty acid having from 6 to 28 carbon atoms or a methyl ester thereof; and the or each second reactant is a polyol selected from an ester of glycerol and a hydroxycarboxylic acid (such as castor oil), an alkoxylated polyol (such as Tween 80), a nitrogen containing polyol, and a polyol of formula (IA) wherein each R2 is independently an optionally substituted alkylene group and q is an integer of at least 1. The polyol ester may be the reaction product of reactants consisting essentially of or consisting of one or more first reactants and one or more second reactants, wherein the or each first reactant is a monocarboxylic acid or ester that is a saturated fatty acid having from 6 to 28 carbon atoms or a methyl ester thereof; and the or each second reactant is a polyol selected from an ester of glycerol and a hydroxycarboxylic acid (such as castor oil), an alkoxylated polyol (such as Tween 80), a nitrogen containing polyol, and a polyol of formula (IA) wherein each R2 is independently an optionally substituted alkylene group and q is an integer of at least 1. The polyol ester may be the reaction product of reactants comprising one or more first reactants and one or more second reactants, wherein the or each first reactant is a monocarboxylic acid or ester thereof that is a fatty acid having from 6 to 28 carbon atoms or a methyl ester thereof; and the or each second reactant is a polyol selected from an alkoxylated polyol (such as Tween 80), a nitrogen containing polyol, and a polyol of formula (IA) wherein each R2 is independently an optionally substituted alkylene group and q is an integer of at least 1. The polyol ester may be the reaction product of reactants consisting essentially of or consisting of one or more first reactants and one or more second reactants, wherein the or each first reactant is a monocarboxylic acid or ester thereof that is a fatty acid having from 6 to 28 carbon atoms or a methyl ester thereof; and the or each second reactant is a polyol selected from an alkoxylated polyol (such as Tween 80), a nitrogen containing polyol, and a polyol of formula (IA) wherein each R2 is independently an optionally substituted alkylene group and q is an integer of at least 1. Suitably, the polyol ester may be the reaction product of reactants comprising one or more first reactants and one or more second reactants, wherein the or each first reactant is a monocarboxylic acid or ester thereof selected from erucic acid, methyl laurate, methyl oleate or methyl erucate; and the or each second reactant is a polyol selected from sucrose, N-methyl diethanolamine or polypropylene glycol (such as PPG 2000). Suitably, the polyol ester may be the reaction product of reactants consisting essentially of or consisting of one or more first reactants and one or more second reactants, wherein the or each first reactant is a monocarboxylic acid or ester thereof selected from erucic acid, methyl laurate, methyl oleate or methyl erucate; and the or each second reactant is a polyol selected from sucrose, N-methyl diethanolamine or polypropylene glycol (such as PPG 2000). Suitably, the polyol ester may be the reaction product of reactants comprising one or more first reactants and one or more second reactants, wherein the or each first reactant is a monocarboxylic acid or ester thereof selected from erucic acid, methyl laurate, methyl oleate or methyl erucate (especially, methyl oleate or methyl erucate); and the or each second reactant is sucrose. Suitably, the polyol ester may be the reaction product of reactants consisting essentially of or consisting of one or more first reactants and one or more second reactants, wherein the or each first reactant is a monocarboxylic acid or ester thereof selected from erucic acid, methyl laurate, methyl oleate or methyl erucate (especially, methyl oleate or methyl erucate); and the or each second reactant is sucrose. Suitably, the polyol ester may be the reaction product of reactants comprising one or more first reactants and one or more second reactants, wherein the or each first reactant is a monocarboxylic acid or ester thereof selected from hexanoic acid, decanoic acid, lauric acid, stearic acid, erucic acid, methyl octanoate, methyl decanoate, methyl laurate, methyl stearate, methyl linoleate, or methyl erucate; and the or each second reactant is a polyol selected from castor oil, Tween 80, trimethylolpropane, sucrose, lactose, maltose, sorbitol, xylitol, N-methyldiethanolamine, glycerol, 2,2-bis(hydroxymethyl) propionic acid, PPG 2000, or 1,6-hexanediol. Suitably, the polyol ester may be the reaction product of reactants consisting essentially of or consisting of one or more first reactants and one or more second reactants, wherein the or each first reactant is a monocarboxylic acid or ester thereof selected from hexanoic acid, decanoic acid, lauric acid, stearic acid, erucic acid, methyl octanoate, methyl decanoate, methyl laurate, methyl stearate, methyl linoleate, or methyl erucate; and the or each second reactant is a polyol selected from castor oil, Tween 80, trimethylolpropane, sucrose, lactose, maltose, sorbitol, xylitol, N-methyldiethanolamine, glycerol, 2,2-bis(hydroxymethyl) propionic acid, PPG 2000, or 1,6-hexanediol. Suitably, the polyol ester may be the reaction product of reactants comprising one or more first reactants and one or more second reactants, wherein the or each first reactant is a monocarboxylic acid or ester thereof selected from hexanoic acid, decanoic acid, lauric acid, stearic acid, oleic acid, erucic acid, methyl octanoate, methyl decanoate, methyl laurate, methyl stearate, methyl oleate, methyl linoleate, or methyl erucate; and the or each second reactant is a polyol selected from Tween 80, trimethylolpropane, sucrose, lactose, maltose, sorbitol, xylitol, N-methyldiethanolamine, glycerol, 2,2-bis(hydroxymethyl) propionic acid, PPG 2000, or 1,6-hexanediol. Suitably, the polyol ester may be the reaction product of reactants consisting essentially of or consisting of one or more first reactants and one or more second reactants, wherein the or each first reactant is a monocarboxylic acid or ester thereof selected from hexanoic acid, decanoic acid, lauric acid, stearic acid, oleic acid, erucic acid, methyl octanoate, methyl decanoate, methyl laurate, methyl stearate, methyl oleate, methyl linoleate, or methyl erucate; and the or each second reactant is a polyol selected from Tween 80, trimethylolpropane, sucrose, lactose, maltose, sorbitol, xylitol, N-methyldiethanolamine, glycerol, 2,2-bis(hydroxymethyl) propionic acid, PPG 2000, or 1,6-hexanediol. Suitably, at least one of the monocarboxylic acids or esters thereof may be selected from decanoic acid, lauric acid, stearic acid, oleic acid, erucic acid, methyl decanoate, methyl laurate, methyl stearate, methyl oleate or methyl erucate (especially from erucic acid, methyl laurate, methyl oleate or methyl erucate, more especially methyl oleate or methyl erucate). Suitably, at least one of the monocarboxylic acids or esters thereof may be selected from decanoic acid, lauric acid, stearic acid, erucic acid, methyl decanoate, methyl laurate, methyl stearate, or methyl erucate (especially from erucic acid, methyl laurate, or methyl erucate, more especially methyl oleate or methyl erucate). Suitably, at least one of the polyols has at least 3 hydroxy groups, for example at least 4 hydroxy groups. At least one of the polyols may have from 3 to 8 hydroxy groups, for example from 4 to 8 hydroxy groups. Suitably, at least one of the polyols may be selected from an ester of glycerol and a hydroxycarboxylic acid (such as castor oil), an alkoxylated polyol (such as Tween 80), and a polyol of formula (IA) wherein each R2 is independently an optionally substituted alkylene group and q is an integer of at least 1, and wherein at least one R2 is a hydroxy-substituted alkylene group. Suitably, at least one of the polyols may be selected from an alkoxylated polyol (such as Tween 80), and a polyol of formula (IA) wherein each R2 is independently an optionally substituted alkylene group and q is an integer of at least 1, and wherein at least one R2 is a hydroxysubstituted alkylene group. Suitably, at least one of the polyols may be selected from a polyol of formula (IA) wherein each R2 is independently an optionally substituted alkylene group and q is an integer of at least 1, and wherein at least one R2 is a hydroxy-substituted alkylene group. Suitably, at least one of the polyols may be selected from an ester of glycerol and a hydroxycarboxylic acid (such as castor oil), Tween 80, a sugar derived compound (such as sucrose, maltose or lactose, especially sucrose, including hydrates thereof), or trimethylolpropane. When the polyol is castor oil, the one or more monocarboxylic acid or esters thereof and the polyol may be reacted in a molar ratio of from 0.5:1 to 1.5:1, preferably a molar ratio of 1:1. When the polyol has at least 4 hydroxy groups (such as when the polyol is Tween 80 or a sugar derived compound), the one or more monocarboxylic acid or esters thereof and the polyol may be reacted in a molar ratio of from 2:1 to 10:1, preferably a molar ratio of from 2:1 to 6:1. Suitably, at least one of the polyols may be selected from Tween 80, a sugar derived compound (such as sucrose, maltose or lactose, especially sucrose, including hydrates thereof), or trimethylolpropane. Suitably, at least one of the polyols may be selected from a sugar derived compound (such as sucrose, maltose or lactose, especially sucrose, including hydrates thereof). The polyol ester may be the reaction product of reactants comprising one or more first reactants and one or more second reactants, wherein the or each first reactant is a monocarboxylic acid or ester thereof that is a fatty acid having from 10 to 22 carbon atoms or a methyl ester thereof; and the or each second reactant is a polyol having from 2 to 8, such as from 3 to 8, hydroxy groups. The polyol ester may be the reaction product of reactants consisting essentially of or consisting of one or more first reactants and one or more second reactants, wherein the or each first reactant is a monocarboxylic acid or ester thereof that is a fatty acid having from 10 to 22 carbon atoms or a methyl ester thereof; and the or each second reactant is a polyol having from 2 to 8, such as from 3 to 8, hydroxy groups. The polyol ester may be the reaction product of reactants comprising one or more first reactants and one or more second reactants, wherein the or each first reactant is a monocarboxylic acid or ester thereof that is a saturated fatty acid having from 10 to 22 carbon atoms or a methyl ester thereof; and the or each second reactant is a polyol having from 2 to 8, such as from 3 to 8, hydroxy groups. The polyol ester may be the reaction product of reactants consisting essentially of or consisting of one or more first reactants and one or more second reactants, wherein the or each first reactant is a monocarboxylic acid or ester thereof that is a saturated fatty acid having from 10 to 22 carbon atoms or a methyl ester thereof; and the or each second reactant is a polyol having from 2 to 8, such as from 3 to 8, hydroxy groups. The polyol ester may be the reaction product of reactants comprising one or more first reactants and one or more second reactants, wherein the or each first reactant is a monocarboxylic acid or ester thereof that is a fatty acid having from 10 to 22 carbon atoms or a methyl ester thereof; and the or each second reactant is a polyol having from 4 to 8 hydroxy groups. The polyol ester may be the reaction product of reactants consisting essentially of or consisting of one or more first reactants and one or more second reactants, wherein the or each first reactant is a monocarboxylic acid or ester thereof that is a fatty acid having from 10 to 22 carbon atoms or a methyl ester thereof; and the or each second reactant is a polyol having from 4 to 8 hydroxy groups. Suitably, the polyol ester may be the reaction product of reactants comprising one or more first reactants and one or more second reactants, wherein the or each first reactant is a monocarboxylic acid or ester thereof selected from decanoic acid, lauric acid, stearic acid, oleic acid, erucic acid, methyl decanoate, methyl laurate, methyl stearate, methyl oleate or methyl erucate; and the or each second reactant is a polyol selected from castor oil, Tween 80, trimethylolpropane, sucrose, lactose or maltose. Suitably, the polyol ester may be the reaction product of reactants consisting essentially of or consisting of one or more first reactants and one or more second reactants, wherein the or each first reactant is a monocarboxylic acid or ester thereof selected from decanoic acid, lauric acid, stearic acid, oleic acid, erucic acid, methyl decanoate, methyl laurate, methyl stearate, methyl oleate or methyl erucate; and the or each second reactant is a polyol selected from castor oil, Tween 80, trimethylolpropane, sucrose, lactose or maltose. Suitably, the polyol ester may be the reaction product of reactants comprising one or more first reactants and one or more second reactants, wherein the or each first reactant is a monocarboxylic acid or esterthereof selected from decanoic acid, lauric acid, stearic acid, erucic acid, methyl decanoate, methyl laurate, methyl stearate, or methyl erucate; and the or each second reactant is a polyol selected from castor oil, Tween 80, trimethylolpropane, sucrose, lactose or maltose. Suitably, the polyol ester may be the reaction product of reactants consisting essentially of or consisting of one or more first reactants and one or more second reactants, wherein the or each first reactant is a monocarboxylic acid or esterthereof selected from decanoic acid, lauric acid, stearic acid, erucic acid, methyl decanoate, methyl laurate, methyl stearate, or methyl erucate; and the or each second reactant is a polyol selected from castor oil, Tween 80, trimethylolpropane, sucrose, lactose or maltose. Suitably, the polyol ester may be the reaction product of reactants comprising one or more first reactants and one or more second reactants, wherein the or each first reactant is a monocarboxylic acid or esterthereof selected from decanoic acid, lauric acid, stearic acid, oleic acid, erucic acid, methyl decanoate, methyl laurate, methyl stearate, methyl oleate or methyl erucate; and the or each second reactant is a polyol selected from Tween 80, trimethylolpropane, sucrose, lactose or maltose. Suitably, the polyol ester may be the reaction product of reactants consisting essentially of or consisting of one or more first reactants and one or more second reactants, wherein the or each first reactant is a monocarboxylic acid or esterthereof selected from decanoic acid, lauric acid, stearic acid, oleic acid, erucic acid, methyl decanoate, methyl laurate, methyl stearate, methyl oleate or methyl erucate; and the or each second reactant is a polyol selected from Tween 80, trimethylolpropane, sucrose, lactose or maltose. Preferably, the polyol ester may be the reaction product of reactants comprising one or more first reactants and one or more second reactants, wherein the or each first reactant is an ester of the monocarboxylic acid; and the or each second reactant is a polyol of formula (I) or of formula (IA) which is a sugar derived compound in which R1 or R2 includes one or more hydroxy residues (such as glucose, fructose, trehalose, sucrose, lactose, maltose or sorbitol, preferably sorbitol or sucrose, preferably sucrose). Preferably, the polyol ester may be the reaction product of reactants comprising one or more first reactants and one or more second reactants, wherein the or each first reactant is an alkyl (especially methyl) ester of the monocarboxylic acid; and the or each second reactant is a polyol of formula (I) or of formula (IA) which is a sugar derived compound in which R1 or R2 includes one or more hydroxy residues (such as glucose, fructose, trehalose, sucrose, lactose, maltose or sorbitol, preferably sorbitol or sucrose, preferably sucrose). Preferably, the polyol ester may be the reaction product of reactants comprising one or more first reactants and one or more second reactants, wherein the or each first reactant is a fatty acid methyl ester; and the or each second reactant is a polyol of formula (I) or of formula (IA) which is a sugar derived compound in which R1 or R2 includes one or more hydroxy residues (such as glucose, fructose, trehalose, sucrose, lactose, maltose or sorbitol, preferably sorbitol or sucrose, preferably sucrose). Preferably, the polyol ester may be the reaction product of reactants comprising one or more first reactants and one or more second reactants, wherein the or each first reactant is an ester (preferably a methyl ester) of lauric acid, oleic acid, or erucic acid; and the or each second reactant is a polyol of formula (I) or of formula (IA) which is a sugar derived compound in which R1 or R2 includes one or more hydroxy residues (such as glucose, fructose, trehalose, sucrose, lactose, maltose or sorbitol, preferably sorbitol or sucrose, preferably sucrose). Preferably, the polyol ester is the reaction product of reactants comprising: (i) stearic acid and castor oil, preferably in a molar ratio of 1:1; (ii) methyl stearate and lactose (such as D-lactose monohydrate), preferably in a molar ratio of 4:1; (iii) methyl erucate and sucrose, preferably in a molar ratio of 4:1; (iv) lauric acid and Tween 80, preferably in a molar ratio of 3:1; (v) decanoic acid and trimethylolpropane, preferably in a molar ratio of 1:1; (vi) methyl oleate and sucrose, preferably in a molar ratio of 6:1; (vii) methyl erucate and sucrose, preferably in a molar ratio of 2:1; (viii) methyl laurate and sucrose, preferably in a molar ratio of 6:1; (ix) methyl oleate and maltose (such as D-maltose monohydrate), preferably in a molar ratio of 4:1; (x) methyl erucate and maltose (such as D-maltose monohydrate), preferably in a molar ratio of 4:1; (xi) erucic acid and N-methyldiethanolamine, preferably in a molar ratio of 1:1; or (xii) erucic acid and PPG 2000, preferably in a molar ratio of 2:1. Preferably, the polyol ester is the reaction product of reactants consisting essentially of or consisting of: (i) stearic acid and castor oil, preferably in a molar ratio of 1:1; (ii) methyl stearate and lactose (such as D-lactose monohydrate), preferably in a molar ratio of 4:1; (iii) methyl erucate and sucrose, preferably in a molar ratio of 4:1; (iv) lauric acid and Tween 80, preferably in a molar ratio of 3:1; (v) decanoic acid and trimethylolpropane, preferably in a molar ratio of 1:1; (vi) methyl oleate and sucrose, preferably in a molar ratio of 6:1; (vii) methyl erucate and sucrose, preferably in a molar ratio of 2:1; (viii) methyl laurate and sucrose, preferably in a molar ratio of 6:1; (ix) methyl oleate and maltose (such as D-maltose monohydrate), preferably in a molar ratio of 4:1; (x) methyl erucate and maltose (such as D-maltose monohydrate), preferably in a molar ratio of 4:1; (xi) erucic acid and N-methyldiethanolamine, preferably in a molar ratio of 1:1; or (xii) erucic acid and PPG 2000, preferably in a molar ratio of 2:1. Preferably, the polyol ester is the reaction product of reactants comprising: (i) stearic acid and castor oil, preferably in a molar ratio of 1:1; (ii) lauric acid and Tween 80, preferably in a molar ratio of 3:1; or (iii) decanoic acid and trimethylolpropane, preferably in a molar ratio of 1:1. Preferably, the polyol ester is the reaction product of reactants consisting essentially of or consisting of: (i) stearic acid and castor oil, preferably in a molar ratio of 1:1; (ii) lauric acid and Tween 80, preferably in a molar ratio of 3:1; or (iii) decanoic acid and trimethylolpropane, preferably in a molar ratio of 1:1. Preferably, the polyol ester is the reaction product of reactants comprising: (i) methyl erucate and sucrose, preferably in a molar ratio of 4:1; (ii) methyl oleate and sucrose, preferably in a molar ratio of 6:1; (iii) methyl erucate and sucrose, preferably in a molar ratio of 2:1; (iv) methyl laurate and sucrose, preferably in a molar ratio of 6:1; (v) erucic acid and N-methyldiethanolamine, preferably in a molar ratio of 1:1; or (vi) erucic acid and PPG 2000, preferably in a molar ratio of 2:1. Preferably, the polyol ester is the reaction product of reactants consisting essentially of or consisting of: (i) methyl erucate and sucrose, preferably in a molar ratio of 4:1; (ii) methyl oleate and sucrose, preferably in a molar ratio of 6:1; (iii) methyl erucate and sucrose, preferably in a molar ratio of 2:1; (iv) methyl laurate and sucrose, preferably in a molar ratio of 6:1; (v) erucic acid and N-methyldiethanolamine, preferably in a molar ratio of 1:1; or (vi) erucic acid and PPG 2000, preferably in a molar ratio of 2:1. Preferably, the polyol ester is the reaction product of reactants comprising: (i) methyl erucate and sucrose, preferably in a molar ratio of 4:1; (ii) methyl oleate and sucrose, preferably in a molar ratio of 6:1; (iii) methyl erucate and sucrose, preferably in a molar ratio of 2:1; or (iv) methyl laurate and sucrose, preferably in a molar ratio of 6:1. Preferably, the polyol ester is the reaction product of reactants consisting essentially of or consisting of: (i) methyl erucate and sucrose, preferably in a molar ratio of 4:1; (ii) methyl oleate and sucrose, preferably in a molar ratio of 6:1; (iii) methyl erucate and sucrose, preferably in a molar ratio of 2:1; or (iv) methyl laurate and sucrose, preferably in a molar ratio of 6:1. Preferably, the polyol ester is the reaction product of reactants comprising: (i) methyl oleate and sucrose, preferably in a molar ratio of 6:1; (ii) methyl erucate and sucrose, preferably in a molar ratio of 2:1; (iii) erucic acid and N-methyldiethanolamine, preferably in a molar ratio of 1:1; or (iv) erucic acid and PPG 2000, preferably in a molar ratio of 2:1. Preferably, the polyol ester is the reaction product of reactants consisting essentially of or consisting of: (i) methyl oleate and sucrose, preferably in a molar ratio of 6:1; (ii) methyl erucate and sucrose, preferably in a molar ratio of 2:1; (iii) erucic acid and N-methyldiethanolamine, preferably in a molar ratio of 1:1; or (iv) erucic acid and PPG 2000, preferably in a molar ratio of 2:1. Preferably, the polyol ester is substantially free of silicon atoms. By substantially free of silicon atoms we mean that the polyol ester contains less than 1 wt% of silicon in the polyol ester, preferably less than 0.5 wt% of silicon in the polyol ester. More preferably, the polyol ester is free of silicon atoms, by which we mean that it is not possible to detect silicon in the polyol ester. Suitable methods of measuring the amount of silicon in a polyol ester are well known to those skilled in art and include elemental analysis and inductively coupled plasma (ICP) spectroscopy. Preferably, the polyol ester is substantially free of fluorine atoms. The polyol ester may be substantially free of halogen atoms. By substantially free of fluorine or halogen atoms we mean that the polyol ester contains less than 1 wt% of fluorine or halogen in the polyol ester, preferably less than 0.5 wt% of fluorine or halogen in the polyol ester. More preferably, the polyol ester is free of fluorine atoms. The polyol ester may be free of halogen atoms. By free of fluorine or halogen atoms we mean that it is not possible to detect fluorine or halogen in the polyol ester. Suitable methods of measuring the amount of fluorine or halogen in a polyol ester are well known to those skilled in art and include elemental analysis and inductively coupled plasma (ICP) spectroscopy. Preferably, the polyol ester is substantially free of quaternary ammonium moieties. By substantially free of quaternary ammonium moieties we mean that the polyol ester contains less than 1 wt% of quaternary nitrogen atoms in the polyol ester, preferably less than 0.5 wt% of quaternary nitrogen atoms in the polyol ester. More preferably, the polyol ester is free of quaternary ammonium moieties, by which we mean that it is not possible to detect quaternary ammonium moieties in the polyol ester. Preferably, the method of the first aspect is a method of treating a keratinous material growing on a body (such as hair), the method comprising contacting the keratinous material with a polyol ester, wherein the polyol ester is the reaction product of reactants comprising, consisting essentially of or consisting of one or more first reactants and one or more second reactants, wherein the or each first reactant is an ester of a monocarboxylic acid; and the or each second reactant is a polyol of formula (I) or of formula (IA) which is a sugar derived compound in which R1 or R2 includes one or more hydroxy residues (such as glucose, fructose, trehalose, sucrose, lactose, maltose or sorbitol, preferably sorbitol or sucrose, preferably sucrose); and wherein the method provides a reduction in frizziness to the keratinous material (such as hair). Preferably, the method of the first aspect is a method of treating a keratinous material growing on a body (such as hair), the method comprising contacting the keratinous material with a polyol ester, wherein the polyol ester is the reaction product of reactants comprising, consisting essentially of or consisting of one or more first reactants and one or more second reactants, wherein the or each first reactant is an alkyl (especially methyl) ester of a monocarboxylic acid; and the or each second reactant is a polyol of formula (I) or of formula (IA) which is a sugar derived compound in which R1 or R2 includes one or more hydroxy residues (such as glucose, fructose, trehalose, sucrose, lactose, maltose or sorbitol, preferably sorbitol or sucrose, preferably sucrose); and wherein the method provides a reduction in frizziness to the keratinous material (such as hair). Preferably, the method of the first aspect is a method of treating a keratinous material growing on a body (such as hair), the method comprising contacting the keratinous material with a polyol ester, wherein the polyol ester is the reaction product of reactants comprising, consisting essentially of or consisting of one or more first reactants and one or more second reactants, wherein the or each first reactant is a fatty acid methyl ester; and the or each second reactant is a polyol of formula (I) or of formula (IA) which is a sugar derived compound in which R1 or R2 includes one or more hydroxy residues (such as glucose, fructose, trehalose, sucrose, lactose, maltose or sorbitol, preferably sorbitol or sucrose, preferably sucrose); and wherein the method provides a reduction in frizziness to the keratinous material (such as hair). Preferably, the method of the first aspect is a method of treating a keratinous material growing on a body (such as hair), the method comprising contacting the keratinous material with a polyol ester, wherein the polyol ester is the reaction product of reactants comprising, consisting essentially of or consisting of one or more first reactants and one or more second reactants, wherein the or each first reactant is an ester (preferably a methyl ester) of lauric acid, oleic acid, or erucic acid; and the or each second reactant is a polyol of formula (I) or of formula (IA) which is a sugar derived compound in which R1 or R2 includes one or more hydroxy residues (such as glucose, fructose, trehalose, sucrose, lactose, maltose or sorbitol, preferably sorbitol or sucrose, preferably sucrose); and wherein the method provides a reduction in frizziness to the keratinous material (such as hair). Preferably the use of the second aspect is a use of a polyol ester to treat a keratinous material growing on a body (such as hair), wherein the polyol ester is the reaction product of reactants comprising, consisting essentially of or consisting of one or more first reactants and one or more second reactants, wherein the or each first reactant is an ester of the monocarboxylic acid; and the or each second reactant is a polyol of formula (I) or of formula (IA) which is a sugar derived compound in which R1 or R2 includes one or more hydroxy residues (such as glucose, fructose, trehalose, sucrose, lactose, maltose or sorbitol, preferably sorbitol or sucrose, preferably sucrose); and wherein the use provides a reduction in frizziness to the keratinous material (such as hair). Preferably the use of the second aspect is a use of a polyol ester to treat a keratinous material growing on a body (such as hair), wherein the polyol ester is the reaction product of reactants comprising, consisting essentially of or consisting of one or more first reactants and one or more second reactants, wherein the or each first reactant is an alkyl (especially methyl) ester of the monocarboxylic acid; and the or each second reactant is a polyol of formula (I) or of formula (IA) which is a sugar derived compound in which R1 or R2 includes one or more hydroxy residues (such as glucose, fructose, trehalose, sucrose, lactose, maltose or sorbitol, preferably sorbitol or sucrose, preferably sucrose); and wherein the use provides a reduction in frizziness to the keratinous material (such as hair). Preferably the use of the second aspect is a use of a polyol ester to treat a keratinous material growing on a body (such as hair), wherein the polyol ester is the reaction product of reactants comprising, consisting essentially of or consisting of one or more first reactants and one or more second reactants, wherein the or each first reactant is a fatty acid methyl ester; and the or each second reactant is a polyol of formula (I) or of formula (IA) which is a sugar derived compound in which R1 or R2 includes one or more hydroxy residues (such as glucose, fructose, trehalose, sucrose, lactose, maltose or sorbitol, preferably sorbitol or sucrose, preferably sucrose); and wherein the use provides a reduction in frizziness to the keratinous material (such as hair). Preferably the use of the second aspect is a use of a polyol ester to treat a keratinous material growing on a body (such as hair), wherein the polyol ester is the reaction product of reactants comprising, consisting essentially of or consisting of one or more first reactants and one or more second reactants, wherein the or each first reactant is an ester (preferably a methyl ester) of lauric acid, oleic acid, or erucic acid; and the or each second reactant is a polyol of formula (I) or of formula (IA) which is a sugar derived compound in which R1 or R2 includes one or more hydroxy residues (such as glucose, fructose, trehalose, sucrose, lactose, maltose or sorbitol, preferably sorbitol or sucrose, preferably sucrose); and wherein the use provides a reduction in frizziness to the keratinous material (such as hair). The polyol ester as disclosed herein may be formulated as a component of a composition, such as a composition according to the third aspect. In otherwords, the polyol ester may be comprised in a composition, such as a composition according to the third aspect. Suitably, the polyol ester may be comprised in a composition, wherein the composition additionally comprises one or more suitable additional components. Preferably, the composition of the third aspect may comprise one or more polyol esters, therein the or each polyol ester is the reaction product of reactants comprising, consisting essentially of or consisting of one or more first reactants and one or more second reactants, wherein the or each first reactant is an ester of the monocarboxylic acid; and the or each second reactant is a polyol of formula (I) or of formula (IA) which is a sugar derived compound in which R1 or R2 includes one or more hydroxy residues (such as glucose, fructose, trehalose, sucrose, lactose, maltose or sorbitol, preferably sorbitol or sucrose, preferably sucrose). Preferably, the composition of the third aspect may comprise one or more polyol esters, therein the or each polyol ester is the reaction product of reactants comprising, consisting essentially of or consisting of one or more first reactants and one or more second reactants, wherein the or each first reactant is an alkyl (especially methyl) ester of the monocarboxylic acid; and the or each second reactant is a polyol of formula (I) or of formula (IA) which is a sugar derived compound in which R1 or R2 includes one or more hydroxy residues (such as glucose, fructose, trehalose, sucrose, lactose, maltose or sorbitol, preferably sorbitol or sucrose, preferably sucrose). Preferably, the composition of the third aspect may comprise one or more polyol esters, therein the or each polyol ester is the reaction product of reactants comprising, consisting essentially of or consisting of one or more first reactants and one or more second reactants, wherein the or each first reactant is a fatty acid methyl ester; and the or each second reactant is a polyol of formula (I) or of formula (IA) which is a sugar derived compound in which R1 or R2 includes one or more hydroxy residues (such as glucose, fructose, trehalose, sucrose, lactose, maltose or sorbitol, preferably sorbitol or sucrose, preferably sucrose). Preferably, the composition of the third aspect may comprise one or more polyol esters, therein the or each polyol ester is the reaction product of reactants comprising, consisting essentially of or consisting of one or more first reactants and one or more second reactants, wherein the or each first reactant is an ester (preferably a methyl ester) of lauric acid, oleic acid, or erucic acid; and the or each second reactant is a polyol of formula (I) or of formula (IA) which is a sugar derived compound in which R1 or R2 includes one or more hydroxy residues (such as glucose, fructose, trehalose, sucrose, lactose, maltose or sorbitol, preferably sorbitol or sucrose, preferably sucrose). The composition of the third aspect is suitable for or intended for treating a keratinous material (especially hair). The composition of the third aspect may, in use, provide a change or benefit to a keratinous material (especially hair), for example by enhancing at least one property of the keratinous material (especially hair) as discussed above in relation to the first and second aspects. Thus, the composition of the third aspect may, when contacted with keratinous material (especially hair) change, provide a beneficial effect to or enhance any suitable property of the keratinous material (especially hair). The property of the keratinous material (especially hair) that may be changed, beneficially affected or enhanced may be one or more of the properties discussed herein in relation to the first and second aspects. The change, benefit or enhancement provided by the composition may be temporary, permanent or semi-permanent. In some preferred embodiments the composition of the third aspect may provide a longer lasting benefit to the keratinous material (especially hair), for example a wash-durable benefit. The composition of the third aspect may, upon contact with the keratinous material (especially hair), benefit the keratinous material (especially hair) by providing a conditioning effect thereto. Any suitable conditioning effect may be provided. The composition of the third aspect may, upon contact with keratinous material (especially hair), benefit the keratinous material (especially hair) by providing a reduction in frizziness thereto, i.e. by providing an anti-frizz effect. The composition of the third aspect may, for example, be an anti-frizz composition, such as a leave in or rinse off anti-frizz composition. The composition of the third aspect may, upon contact with keratinous material (especially hair), benefit the keratinous material (especially hair) by providing improved shine or gloss thereto. The composition of the third aspect may, upon contact with keratinous material (especially hair), benefit the keratinous material (especially hair) by providing improved softness thereto. The composition of the third aspect may, upon contact with keratinous material (especially hair), benefit the keratinous material (especially hair) by providing improved silkiness thereto. The composition of the third aspect may, upon contact with keratinous material (especially hair), benefit the keratinous material (especially hair) by providing improved moisture levels (or moisturisation) thereto. The composition of the third aspect may, upon contact with keratinous material (especially hair), benefit the keratinous material (especially hair) by providing improved thermal durability thereto. The composition of the third aspect may, upon contact with keratinous material (especially hair), benefit the keratinous material (especially hair) by providing improved combability thereto. The composition of the third aspect may, upon contact with keratinous material (especially hair), benefit the keratinous material (especially hair) by providing protection to the keratinous material (especially hair) against damage. For example the composition of the third aspect may, upon contact with keratinous material (especially hair), protect against damage from heat or sunlight (for example by providing UV stability or protection). The composition of the third aspect may, upon contact with keratinous material (especially hair), benefit the keratinous material (especially hair) by providing improved smoothness thereto. The composition of the third aspect may, upon contact with keratinous material (especially hair), benefit the keratinous material (especially hair) by reducing the drying time of the keratinous material (especially hair). Those skilled in the art will appreciate that it is possible to confer one or more benefits to a keratinous material (especially hair) from a single product containing the polyol ester as defined herein. Thus, compositions that may provide such combinations of benefits are also covered in the invention. The form and nature of the composition of the third aspect will depend on the intended use thereof. The composition of the third aspect may be provided in any suitable form, for example that is suitable for application to a keratinous material (especially hair). For example, the composition may be in the form of an aerosol, gel, paste, cream, mousse, spray or wax. It may be in the form of a liquid composition. Such compositions may be in the form of a solution, dispersion or emulsion. The composition may be provided as a solid composition, for example as a powder or as a bar. In some embodiments a concentrate composition may be provided, which for example may be for dilution prior to use or for use in manufacturing a consumer product. In some embodiments the composition of the third aspect may be a precursor composition to be mixed with one or more further components prior to contact with the keratinous material (especially hair). The composition may be a concentrate composition. Typically, a concentrate composition may be diluted prior to use. Such a concentrate composition may comprise at least 10 wt%, such as at least 20 wt%, at least 30 wt%, at least 40 wt%, at least 50 wt%, at least 60 wt%, at least 70 wt%, or at least 80 wt% of the polyol ester. Such a concentrate composition may comprise 99 wt% or less, such as 95 wt% or less, for example 90 wt% or less of the polyol ester. For example, the concentrate composition may comprise from 10 to 99 wt%, preferably from 20 to 95 wt%, for example from 50 to 90 wt% of the polyol ester. References herein to the amount of polyol ester in the composition are intended to refer to the total of the or each polyol ester as defined herein that is included in the composition. In another embodiment, the composition may be suitable for directly contacting with a keratinous material (for example without dilution prior to use). In this case, the composition may comprise at least 0.1 wt%, such as at least 0.5 wt%, at least 1 wt%, at least 2 wt%, or at least 4 wt% of the polyol ester. Such a composition may comprise less than 10 wt% of the polyol ester, such as 8 wt% or less or 5 wt% or less of the polyol ester. For example, the composition may comprise from 0.1 to 5 wt%, preferably from 0.5 to 5 wt%, of the polyol ester. Suitably the composition of the third aspect is substantially free of silicon atoms. By substantially free of silicon atoms we mean that the composition contains less than 1 wt%, preferably less than 0.5 wt%, of silicon in the composition. More preferably, the composition is free of silicon atoms, by which we mean that it is not possible to detect silicon in the composition. Suitable methods of measuring the amount of silicon in a composition are well known to those skilled in art and include elemental analysis and inductively coupled plasma (ICP) spectroscopy. The composition of the third aspect may be a shampoo or a bodywash, preferably a shampoo. The shampoo may be a leave in or rinse out shampoo, preferably a leave in shampoo. The composition of the third aspect may be suitable for application to a human or an animal. The composition may be an animal (for example pet) care composition. The composition may comprise one or more further additional components. Suitable additional components are those typically used in personal care compositions (especially hair care compositions) and are known to the person skilled in the art. The compositions of the third aspect may comprise different additional components depending on the intended use thereof. The additional components may be included to provide different properties to the keratinous material (especially hair) as provided by the polyol ester defined herein in use thereof, and / or to provide an enhancement to a property as provided by the polyol ester as defined herein. The one or more suitable further additional components may be included in the composition of the third aspect in any suitable amount, as would be appreciated by a person skilled in the art. The relative ratios of the components and the formulation of such compositions would be within the competence of the skilled person. For example, the one or more further additional components (when present) may be included in the composition in an amount of from 0.01 to 10 wt% of the composition. For example, the composition may further comprise one or more carriers or solvents. Any suitable carrier or solvent may be included in the composition. A suitable carrier or solvent may, for example, be selected from one or more of water, monohydric-alcohols (for example ethanol, propanol, isopropanol, isobutanol tertiary-butanol and fatty alcohols), polyhydric alcohols (for example alkylene glycols and poly(alkylene glycols)), sugar alcohols (for example sorbitol), low viscosity / volatile silicones, hydrocarbon solvents (for example isododecane and mineral oils), propylene carbonate, benzyl alcohol, aliphatic or aromatic esters (for example vegetable oils, isopropyl myristate and C12-15 alkyl benzoate), and perfluorocarbon solvents. Mixtures of the carriers and / or solvents may be used. The composition of the third aspect may comprise any suitable amount of the one or more carriers or solvents, for example from 60 to 99.9 wt%, preferably from 65 to 90 wt%. The composition of the third aspect may be an aqueous composition. In this case water is suitably the major solvent present in the composition. In some embodiments water provides for at least 50 wt% of all solvents present in the composition, preferably at least 60 wt%, more preferably at least 70 wt%, suitably at least 80 wt%, for example at least 90 wt% or at least 95 wt%. In some embodiments one or more further water miscible solvents may be present. Examples of suitable water miscible solvents include monohydric and polyhydric alcohols, for example ethanol, glycerol and isopropanol. When the carrier or solvent comprises water, the composition may be in the form of an emulsion. The composition of the third aspect may not be aqueous. In this case the composition may comprise a solvent or carrier that is an oleophilic material. For example, the composition may comprise a solvent selected from one or more higher fatty alcohols, a mineral oil and a vegetable oil. The composition of the third aspect may, for example, further comprise one or more propellants. Any suitable propellant may be included in the composition. A suitable propellant may be a liquifiable gas especially those selected from a chlorofluorocarbon, a hydrofluorocarbon (such as hydrofluorocarbon 152A), n-propane, isopropane, n-butane, isobutane, dimethyl ether, dimethoxymethane, ethanol / water blends, dimethoxyethane, compressed air, compressed nitrogen, and compressed carbon dioxide. Preferably (when present) the propellant may be selected from one or more of n-propane, isopropane, n-butane, isobutane, dimethyl ether, dimethoxymethane, dimethoxyethane, compressed air and compressed carbon dioxide. Suitable further additional components may include one or more of aesthetic modifying agents, anti-dandruff agents, anti-static agents, anti-oxidants, chelating agents, conditioning agents, costyling agents, electrolytes, film forming agents, foaming agents, fragrances, fragrance solubilisers, hair colouring agents, hydrotropic agents, additional moisturising agents, neutralising agents for styling polymers, rheology modifiers and pH adjusters, other active agents, pearlising agents, penetration enhancing agents, pH adjusting agents, plasticisers, preservatives, product colouring agents, scalp benefit agents, additional shine agents, slip agents, styling agents, texturising agents, thermal protection agents, UV absorbers, viscosifying agents, agents to combat colour loss, sebum reduction agents, anti-itch agents, hair fall reduction agents, hair growth promoters, and wetting agents. Preferably, the further additional components may include one or more of anti-dandruff agents, anti-static agents, anti-oxidants, chelating agents, co-styling agents, electrolytes, film forming agents, foaming agents, fragrances, fragrance solubilisers, hair colouring agents, hydrotropic agents, additional moisturising agents, neutralising agents for styling polymers, rheology modifiers and pH adjusters, other active agents, pearlising agents, penetration enhancing agents, pH adjusting agents, plasticisers, preservatives, product colouring agents, scalp benefit agents, additional shine agents, slip agents, styling agents, texturising agents, UV absorbers, viscosifying agents, sebum reduction agents, anti-itch agents, hairfall reduction agents, hair growth promoters, and wetting agents. When the composition of the third aspect is provided as a solid composition, suitable additional components may additionally include one or more of structuring aids, fillers, binding agents, anti-mushing / sloughing agents, anti-cracking / hardening agents, sensory property agents (such as cooling agents and warming agents), scalp exfoliant particles, beads or encapsulates (which particles may be physically robust in the solid form but rupture on contact with water). Examples of suitable aesthetic modifying agents may include dimethicone crosspolymer, dimethicone I vinyl dimethicone crosspolymer, dimethicone I phenyl vinyl dimethicone crosspolymer, vinyl dimethicone I lauryl dimethicone crosspolymer, lauryl polydimethylsiloxyethyl dimethicone I bis-vinyl dimethicone crosspolymer, alkyl silicones, stearoxytrimethylsilane, ethylene - dimethicone copolymer, polyethylsiloxanes, alkyl silicones including caprylyl methicone, lauryl methicone and stearoxymethicone. Preferably however the composition of the third aspect is substantially free or free of silicon atoms, such that preferably the composition does not include the aforementioned aesthetic modifying agents. Examples of suitable anti-dandruff agents may include piroctone olamine, zinc oxide, zinc pyrithione(for example in combination with zinc sulfate), essential oils (such as clove, cinnamon and oregano), ketoconazole, climbazole, selenium sulfide, octopiroxand sulfur. Examples of suitable sebum reduction agents include glycolipids, starches and tapioca. Examples of suitable anti-itch agents include histamine-based agents. Examples of suitable hair growth promoters include stimulants such as caffeine, minoxidil, and dimethylglycine. Examples of suitable anti-static agents may include behentrimonium chloride, behentrimonium methosulfate, cetrimonium bromide, cetrimonium chloride, laurtrimonium chloride and olealkonium chloride. Examples of suitable anti-oxidants may include BHT (butylated hydroxytoluene), BHA (butylated hydroxyanisole, tocopherol, vitamin E and tocopheryl acetate. Examples of suitable chelating agents may include ethylenediaminetetraacetic acid (EDTA), ethylenediamine- / V, / V-disuccinic acid (EDDS), imido disuccinic acid (IDS), glutamic acid N,N-diacetic acid (GLDA), hydroxyethylidene diphosphonic acid (HEDP), diethylenetriamine penta(methylene phosphonic acid) (DTPMP), methylglycinediacetic acid (MGDA) and salts thereof, for example disodium EDTA and tetrasodium EDTA. Examples of suitable conditioning agents may include polyquaternium crosspolymer-3, stearamidopropyl dimethylamine, bisamino PEG / PPG-41 / 3 aminoethyl PG-propyl dimethicone, cyclopentasiloxane, olealkonium chloride, phenyl trimethicone, polydimethylsiloxane, polysilicone-15 and vinyl dimethicone / methicone silsesquioxane crosspolymers, : Guar hydroxypropyltrimonium Chloride [Activsoft C14 and Activsoft C17], tetralkyl ammonium halides e.g. Behentrimonium chloride, Cocotrimonium chloride, Cetethyldimonium bromide, Dibehenyldimonium chloride, Dihydrogenated tallow benzylmonium chloride, disoyadimonium chloride, Ditallowdimonium chloride, Hydroxycetyl hydroxyethyl dimonium chloride, Hydroxyethyl Behenamidopropyl dimonium chloride, Hydroxyethyl Cetyldimonium chloride, Hydroxyethyl tallowdimonium chloride, myristalkonium chloride, PEG-2 Oleamonium chloride, PEG-5 Stearmonium chloride, PEG- 15 cocoyl quaternium 4, PEG-2 stearalkonium 4, lauryltrimonium chloride, Quatemium-16, Quatemium-18, lauralkonium chloride, olealkonium chloride, cetylpyridinium chloride, Polyquatemium-5, Polyquaternium-6, Polyquaternium-7 Polyquaternium-10, polyquaternium-11, Polyquatemium-22, Polyquatemium-37, Polyquaternium-39, polyquaternium-46, Polyquaternium-47, polyquaternium-55, cetyl trimonium chloride, cetrimonium bromide, dilauryldimonium chloride, cetalkonium chloride, dicetyldimonium chloride, soyatrimonium chloride, stearyl octydimonium methosulfate, behentrimonium methosulfate (18-MEA), and stearalkonium chloride. Preferably however the composition of the third aspect is substantially free or free of silicon atoms, such that preferably the composition does not include any aforementioned conditioning agents that include silicon. Examples of suitable co-styling agents may include acrylates crosspolymer-3, acrylates / octylacrylamide copolymer, acrylates / t-butylacrylamide copolymer, butyl ester of PVM / MA copolymer, crotonic acid / vinyl C8-12 isoalkyl estersA / A / bis-vinyldimethicone copolymer, methacryloyl ethyl betaine / acrylates copolymer, octylacrylamide / acrylates / butylaminoethyl methacrylate copolymer, PEG-150 / decyl alcohol / SMDi copolymer, AMP-acrylates copolymer, polyvinylcaprolactam, PVP, sodium polyacrylate, VA / crotonates / vinyl neodecanoate copolymer, vinyl caprolactamA / P / dimethylaminoethyl methacrylate copolymer, VP / dimethylaminoethylmethacrylate copolymer, VP / DMAPA acrylates copolymer, VP / VA copolymer, polyquaternium-11, polyquaternium-37, polyquaternium-46 and polyquaternium-55. Examples of suitable film forming agents may include polymers sold under the Amphomer trade name such as Amphomer® LV-71, and latex polymers. Foaming agents may be present when the composition is in the form of a mousse. Examples of suitable foaming agents may include behentrimonium chloride, behentrimonium methosulfate, behenyl alcohol, C14-16 olefin sulfonate, ceteareth-2, ceteareth-20, ceteareth-25, cetearyl alcohol, cetrimonium bromide, cetrimonium chloride, cetyl alcohol, cocamidopropyl betaine, alkyl glucosides (such as decyl glucoside, coco glucoside and lauryl glucoside), glycerol stearate, laureth-3, laureth-7, laurtrimonium chloride, lauryl alcohol, myristyl alcohol, olealkonium chloride, oleth-20, oleth-5, palmitic acid, PEG-100 stearate, polyglyceryl-3 stearate, polysorbate-20, PPG-15 stearyl ether, rhamnolipids, sophorolipids, steareth-2, steareth-21, stearic acid and stearyl alcohol. A suitable fragrance may be Parfum. Examples of suitable fragrance solubilisers may include PEG-40 hydrogenated castor oil, polysorbate-20 and polysorbate-80. Examples of suitable hydrotropic agents may include benzene sulfonate. Examples of suitable hair colouring agents may include acid violet 43, basic red 76, basic blue 99, basic brown 16, basic yellow 87, HC yellow no. 4, disperse red 11 and henna. Examples of suitable additional moisturising agents may include glycerin, panthenol and derivatives thereof, propanediol, propylene glycol, petrolatum, silicones, long chain esters, cationic polymers, alkanes, vegetable oils and urea. Suitable additional moisturising agents may moisturise the fibrous substrate (especially air) and / or the skin on which the fibrous substrate may grow. Examples of suitable neutralising agents for styling polymers, rheology modifiers and pH adjusters may include aminomethyl propanol, potassium hydroxide, sodium hydroxide, tetrahydroxypropyl ethylenediamine, triethanolamine, triisopropanolamine and tromethane. Other suitable active agents may include plant extracts, keratin hydrolysate, amino acids (such as arginine, aspartine, aspartic acid, glutamine, glutamic acid, histidine, lysine, serine, wheat amino acids and silk amino acids) and salts thereof, and niacinamide. Such suitable active ingredients may act to protect, strengthen and / or smooth keratinous material (such as hair). Examples of suitable pearlising agents may include fatty alcohols (such as cetearyl alcohol) and fatty acid glycerol esters (especially glycerol monostearate and glycerol distearate). Examples of suitable penetration enhancing agents may include propylene carbonate and benzyl alcohol. Examples of suitable pH adjusting agents may include lactic acid, sodium hydroxide, sodium phosphate, citric acid, sodium bicarbonate, sodium hydrogen carbonate and salts and buffers thereof. The pH of the composition will depend on the intended use thereof. However preferably the composition has a pH of from 3 to 9, preferably from 3.5 to 8, more preferably from 4 to 7, preferably from 4 to 6. Examples of suitable plasticisers may include bis-diglyceryl polyacyladipate-2, cetearyl octanoate, dibutyl phthalate, dicaprylyl maleate, diethyl phthalate, diethylhexyl adipate, diisopropyl adipate, diisopropyl dimer dilinoleate, ethylhexyl palmitate, glycerin, isopropyl myristate, lauryl pyrrolidone, octyl pyrrolidone, panthenol and derivatives, PEG-12 dimethicone, PPG-12 dimethicone, propanediol, propylene glycol, stearyl stearate and triethyl citrate. Examples of suitable preservatives may include ethylhexyl glycerin, caprylyl glycol, DMDM hydantoin (1,3-bis(hydroxymethyl)-5,5-dimethylimidazolidine-2,4-dione), phenoxyethanol, sodium benzoate, potassium sorbate, methyl paraben and caprylhydroxamic acid. Examples of suitable product colouring agents may include charcoal powder, Cl 42090 and Cl 14700. Examples of suitable additional shine agents may include amodimethicone, bisamino PEG / PPG-41 / 3-aminoethyl PG-propyl dimethicone, cyclopentasiloxane, phenyl trimethicone, polydimethylsiloxane, polysilicone-15, diphenylsiloxy phenyl trimethicone, diphenyl dimethicone, caprylic I capric triglycerides, mineral or natural oils, alkyl benzoates and vinyl dimethicone / methicone silsesquioxane crosspolymers. Preferably however the composition of the third aspect is substantially free or free of silicon atoms, such that preferably the composition does not include any aforementioned shine agents that include silicon. Thus, preferably the shine agents may include one or more of caprylic I capric triglycerides, mineral or natural oils, and alkyl benzoates. Examples of suitable slip agents may include PEG-12, PEG-14M and PEG-45M. Examples of suitable styling agents may include beeswax, candellis wax, candellis wax esters, ceresin, copernicia cerifera wax, hydrogenated palm oil, kaolin, microcrystalline wax, ozokerite, petrolatum, paraffin, mineral oil, polyethylene, pumice, rice bran wax, shea butter, silica silylate and synthetic beeswax. Examples of suitable texturising agents may include beeswax, behenyl alcohol, bis-diglyceryl polyacyladipate-2, C13-14 isoalkane, candellia wax, candellia wax esters, caprylic / capric triglyceride, ceresin, cetearyl alcohol, cetearyl octanoate, cetyl alcohol, copernicia cerifera wax, dibutyl phthalate, dicaprylyl maleate, diethyl phthalate, diethylhexyl adipate, diisopropyl adipate, lanolin (and for example lanolin replacements), ethylhexyl palmitate, glycerin, hydrogenated palm oil, isohexadecane, isopropyl myristate, kaolin, lauryl alcohol, microcrystalline wax, myristyl alcohol, ozokerite PEG-12 dimethicone, petrolatum, paraffin, mineral oil, PEG-12, PEG-14M, PEG-45M, polyethylene, polyquaternium crosspolymer-3, polysorbate-20, PPG-12 dimethicone, pumice, rice bran wax, shea butter, silica, silica silylate, stearamidopropyl dimethylamine, stearyl alcohol, stearyl stearate, synthetic beeswax and triethyl citrate. Examples of suitable thermal protection agents may include bisamino PEG / PPG-41 / 3 aminoethyl PG-propyl dimethicone. Preferably however the composition of the third aspect is substantially free or free of silicon atoms, such that preferably the composition does not include the aforementioned thermal protection agent. UV absorbers may act to protect the keratinous material (such as hair) and / or the composition. Examples of suitable UV absorbers may include benzophenone-4, ethylhexyl dimethyl, PABA (4-amino parabenzoic acid), PABA derivates (such as PEG-25 ester derivates of PABA) and ethylhexyl methoxycinnamate. Examples of suitable viscosifying agents may include behenyl alcohol, cetearyl alcohol, cetyl alcohol, lauryl alcohol, myristyl alcohol and stearyl alcohol. Examples of suitable wetting agents may include ceteath-10 phosphate, dicetyl phosphate, lauryl pyrrolidone, octyl pyrrolidone, potassium cetyl phosphate, PPG-5-ceteth-20, sodium laureth sulfate and trilaureth-4 phosphate. Examples of suitable electrolytes may include ionic compounds such as metal salts selected from sodium chloride, sodium sulfate, potassium chloride, potassium sulfate, sodium phosphate, disodium phosphate, potassium phosphate, dipotassium phosphate, sodium isethionate, sodium methyl isethionate, sodium lactate, sodium citrate and non-metallic salts, for example, ammonium chloride, ammonium citrate and ammonium lactate. Examples of suitable scalp benefit agents may include coconut oil and argan oils. Examples of suitable anti-cracking / hardening agents may include sodium lactate, hydrogenated vegetable oil, hydrogenated castor oil and polyethylene glycol. A suitable anti-mushing / sloughing agent may be aluminium triformate. Examples of suitable agents to combat colour loss may include a hydroxy-substituted aldehyde, such as 2-hydroxydecanal, 2-hydroxydodecanal, 2-hydroxytetradecanal, 2-hydroxyhexanal, 2-hydroxyoctanal, 2-hydroxypropanal, glyceraldehyde, 6-hydroxyhexanal, 3-hydroxypropanal, 4-hydroxy-but-2-enal, 2-hydroxybutanal, 3-hydroxybutanal and 4-hydroxybutanal. A preferred agent to combat colour loss is 2-hydroxyoctanal. The composition of the third aspect may further comprise one or more surfactants, especially when the composition is a bodywash or a shampoo. Any suitable surfactant may be included in the composition. A suitable surfactant may, for example, be selected from one or more anionic, non-ionic, cationic and / or amphoteric surfactants. The anionic surfactant (when present) may be selected from one or more of a sulfate surfactant (such as a mono- or di-alkyl sulfate or alkyl ether sulfate), a sulfonate surfactant, a phosphate surfactant, a sulfosuccinate surfactant, a sulfoacetate surfactant, an isethionate surfactant, an amino acid surfactant (such as a glutamate, alaninate, sarcosinate or glycinate surfactant), a taurate surfactant, a fatty acid soap, an alkyl ether carboxylate and a lactylate surfactant. Particularly exemplary salts of the above, where applicable, are the sodium, potassium, ammonium, magnesium and triethanolamine salts. Suitable alkyl ether carboxylate surfactants may include alkoxylated (such as ethoxylated or propoxylated, especially ethoxylated) carboxylic acids. An example of a preferred alkyl ether carboxylate surfactant is laureth-11 carboxylic acid. Alkyl ether carboxylate surfactants are preferred anionic surfactants for including in the concentrate composition. Where the anionic surfactants include one or more sulfate surfactants, these may suitably be selected from one or more of an alkali metal salt of a mono- or di-alkyl sulfate and / or a mono- or di-alkyl ether sulfate, such as sodium lauryl sulfate, sodium coco sulfate and / or sodium lauryl ether sulfate (sodium laureth sulfate). Where the anionic surfactants include one or more sulfonate surfactants, these may suitably be selected from one or more of an alkyl sulfonate, an alkyl aryl sulfonate, a primary alkane disulfonate, an alkene sulfonate, a hydroxyalkane sulfonate, an alkyl glyceryl ether sulfonate, an alpha-olefin sulfonate, a sulfonate of an alkylphenolpolyglycol ether, an alkyl sulfosuccinate, an alkyl ether sulfosuccinate, an sulfoacetate, and salts thereof. The sulfonate surfactants are suitably alkali metal salts of alkyl sulfonates, alkyl aryl sulfonates and / or alpha-olefin sulfonates. Preferred sulfonates include alpha-olefin sulfonates such as sodium C14-C16 olefin sulfonate. Examples of suitable sulfate and sulfonate surfactants include alkyl glyceryl ether sulfonate, ammonium lauryl sulfate, ammonium laureth sulfate, triethylamine lauryl sulfate, triethylamine laureth sulfate, triethanolamine lauryl sulfate, triethanolamine laureth sulfate, monoethanolamine lauryl sulfate, monoethanolamine laureth sulfate, diethanolamine lauryl sulfate, diethanolamine laureth sulfate, lauric monoglyceride sodium sulfate, sodium lauryl sulfate, sodium laureth sulfate, potassium lauryl sulfate, potassium laureth sulfate, ammonium cocoyl sulfate, ammonium lauroyl sulfate, sodium cocoyl sulfate, sodium lauroyl sulfate, potassium cocoyl sulfate, potassium lauryl sulfate, triethanolamine lauryl sulfate, triethanolamine lauryl sulfate, monoethanolamine cocoyl sulfate, monoethanolamine lauryl sulfate, sodium tridecyl benzene sulfonate, sodium dodecyl benzene sulfonate, and combinations thereof. Sodium laureth sulfate is preferred. Where the anionic surfactants include one or more isethionate surfactants, they preferably include alkali salts of acyl isethionate surfactants. Suitable acyl isethionate surfactants are compounds of formula R7COOCHR8CHR9SO3'M+ wherein R7 represents an optionally substituted C3-C34 hydrocarbyl group, R8 and R9 each independently represent hydrogen or a C1-C4 alkyl and M+ represents a cation. Preferred acyl isethionate surfactants include sodium cocoyl isethionate, sodium lauroyl isethionate, sodium cocoyl methyl isethionate and sodium lauroyl methyl isethionate, and combinations thereof. Suitable lactylate surfactants include alkali salts of acyl lactylate surfactants, such as sodium lauroyl lactylate. Such acyl lactylate surfactants may comprise one or more lactylate moieties, for example from one to three lactylate moieties. The acyl groups are preferably derived from fatty acids. Suitable acyl amino acid surfactants include alkali salts of acyl amino acid surfactants. Suitable acyl amino acid surfactants preferably comprise at least one amino acid residue and at least one fatty acid residue. The amino acid residues may be synthetic or biologically derived. Preferred acyl amino acid surfactants include one or more of an acyl sarcosinate, an acyl alaninate, an acyl glycinate and an acyl glutamate. Suitable acyl glycinates include cocoamphocarboxyglycinate, tallowamphocarboxygycinate, capryloamphocarboxyglycinate, oleoamphocarboxyglycinate, bis-2-hydroxyethyl tallow glycinate, lauryl amphoglycinate, tallow polyamphoglycinate, coco amphoglycinate, oleic polyamphoglycinate, / V-C10 / 12 fatty acid amidoethyl- / V-(2-hydroxyethyl)-glycinate, A / -Ci2 / is-fatty acid amidoethyl-N-(2-hydroxyethyl)-glycinate, dihydroxyethyl tallow gycinate, and combinations thereof. Preferred acyl amino acid surfactants include sodium lauroyl sarcosinate, sodium cocoyl glycinate and sodium lauroyl glycinate, sodium oleoyl glycinate, sodium myristoyl glycinate, sodium cocoyl glutamate, sodium lauroyl glutamate, sodium oleoyl glutamate, sodium myristoyl sodium cocoyl alaninate and sodium lauroyl alaninate. Suitable taurate surfactants include compounds of the formula (III): O R11 R13 R10—C---N---C---C---SO3X R15 R12 R14 (in) wherein X is hydrogen, a metal ion or an optionally substituted ammonium ion, R10 represents an optionally substituted C3-C35 hydrocarbyl group, and each of R11, R12, R13, R14 and R15 independently represents hydrogen or a C1-C4 alkyl group. Preferred taurate surfactants include 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. Suitable non-ionic surfactants for use herein include alcohol alkoxylates (such as alcohol ethoxylates, alcohol propoxylates, and ethylene oxide / propylene oxide copolymer derived surfactants), aliphatic esters, aromatic esters, sugar esters (such as sorbitan esters), glycolipids (such as sophorolipids, rhamnolipids and alkyl (poly)glycosides), fatty acid alkoxylates (such as fatty acid ethoxylates and fatty acid propoxylates), or polyethylene glycol esters (including partial esters), glycerol esters (including glycerol partial esters and glycerol triesters), fatty alcohols (such as cetearyl alcohol, lauryl alcohol, stearyl alcohol, behenyl alcohol), castor oil, alkanolamides, fatty amine alkoxylates (such as fatty amine ethoxylates and fatty amine propoxylates), fatty acid alkoxylates (such as fatty acid ethoxylates and fatty acid propoxylates), polyethylene glycol esters (including partial esters) and castor oil. For example, suitable non-ionic surfactants (when present) may include alcohol alkoxylate surfactants (such as alcohol ethoxylates, alcohol propoxylates, and ethylene oxide / propylene oxide copolymer derived surfactants), aliphatic esters, aromatic esters, sugar esters, (especially sorbitan esters), glycerol esters (including glycerol partial esters and glycerol triesters), fatty alcohols (such as cetearyl alcohol, lauryl alcohol, stearyl alcohol, behenyl alcohol), alkanolamides, glycolipids (especially sophorolipids, rhamnolipids and alkyl glucosides). Suitable sugar esters may include alkoxylated (such as ethoxylated) sugar esters. For example, the sugar ester may comprise an alkoxylated (such as ethoxylated) sugar ester of a fatty acid, such as oleic acid. An example of a preferred sugar ester surfactant is Tween® 80. Suitable fatty amine alkoxylates may include fatty amine ethoxylates and fatty amine propoxylates. Fatty amine ethoxylates are preferred. The fatty amine alkoxylates may be based on any suitable fatty alcohol. An example of a preferred fatty amine alkoxylate is a fatty amine ethoxylate such as Empilan® AMT 11, which is a fatty amine ethoxylate containing 11 moles of ethylene oxide. Fatty amine alkoxylates are preferred non-ionic surfactants for including in the concentrate composition. Suitable alkyl glucosides comprise one or more glucose moieties and an alkyl or alkenyl group. Where an alkyl glucoside comprises more than one glucose moieties, these are preferably present as an oligomer connected by glycosidic bonds. Suitable alkyl glucosides may comprise from 1 to 10 glucose moieties, preferably from 1 to 3. Suitable alkyl glucosides comprise an alkyl or alkenyl group having from 4 to 24 carbon atoms, for example decyl glucoside, lauryl glucoside, coco glucoside, capryl glucoside or caprylyl glucoside, and combinations thereof. A combination of capryl glucoside and caprylyl glucoside is preferred. Suitable cationic surfactants (when present) may include quaternary ammonium compounds (particularly trimethyl quaternary compounds), phosphonium quaternary ions and polymeric cationic surfactants (such as polyquaternium-7, polyquaternium-10, polyquaternium-11, guar hydroxypropyltrimonium chloride, and hydroxypropyl guar hydroxypropyltrimonium chloride). Suitable amphoteric surfactants (when present) may include those based on fatty nitrogen derivates and those based on betaines, as well as amine oxides. Suitable amphoteric or zwitterionic surfactants may be selected from betaines (for example alkyl betaines), alkylamidopropyl betaines (for example cocamidopropyl betaine), alkylamidopropyl hydroxy sultaines, amphoacetates (for example alkylamphoacetates), amphodiacetates (for example alkylamphodiacetates), alkyl propionates, alkylamphodipropionates, alkylamphopropionates, alkyliminodipropionates and alkyliminodiacetate. Cocamidopropyl betaine is preferred. Suitable amine oxides may include N-alkyl N,N-dimethyl amine oxides and alkylamido-N,N-dimethyl amine oxides (such as lauryldimethylamine oxide and cocamidopropyl dimethylamine oxide). Amphoteric or zwitterionic surfactants for use in compositions of the first aspect may include those which have an alkyl or alkenyl group of 7 to 22 carbon atoms, for example of the formula (IV): O R17 R16-[-C—NH(CH2)m}^-N—X2-Y~ R18 (IV) where R16 is alkyl or alkenyl of 7 to 22 carbon atoms, R17 and R18 are each independently alkyl, hydroxyalkyl or carboxyalkyl of 1 to 6 carbon atoms, m is 2 to 4, n is 0 or 1, X2 is alkylene of 1 to 6 carbon atoms optionally substituted with hydroxyl, and Y is -CO2 or -SO3. Amphoteric or zwitterionic surfactants may include simple betaines of formula: R17 R16-N—CH2CO2- R18 and amido betaines of formula: O R17 R16-C—NH(CH2)m—N—CH2CO2- R18 where m is 2 or 3. In both formulae R16, R17 and R18 are as defined previously. R16 may, in particular, be a mixture of Ci 1 and C13 alkyl groups derived from coconut so that at least half, preferably at least three quarters, of the groups R16 has 9 to 13 carbon atoms. R17 and R18 are preferably methyl. Amphoteric or zwitterionic surfactants may include sulfobetaines of formula: R17 r16-n—(ch2)3so3- R18 O R17 R16-C-NH(CH2)m—N—(CH2)3SO3- R18 where m is 2 or 3, or variants of these in which -(CH2)3SO3_ is replaced by OH —ch2-ch-ch2so3_ where R16, R17 and R18 in these formulae are as defined previously. Non-biological amphoteric or zwitterionic surfactants may include amphoacetates and diamphoacetates. Amphoacetates generally conform to the following formula: R19CONHCH2CH2N—CH2CH2OH ch2coo_m+ Diamphoacetates may be of the formula: CH2COO“ M+ | R19CONHCH2CH2N-CH2CH2O-CH2COO m+ where R19 is an aliphatic group (such as an alkyl group) of 7 to 21 carbon atoms and M+ is a cation such as sodium, potassium, ammonium, or substituted ammonium. Suitable amphoacetate and amphodiacetate surfactants may include lauroamphoacetate (for example sodium lauroamphoacetate), lauroamphodiacetate (for example sodium lauroamphodiacetate), cocoamphoacetate (for example sodium cocoamphoacetate), cocoamphodiacetate (for example disodium cocoamphodiacetate), capryloamphodiacete (for example disodium capryloamphodiacete), and wheatgermamphodiacetate (for example disodium wheatgermamphodiacetate). Suitable betaine surfactants may include alkylamido betaine, alkyl betaine, C12 / 14 alkyldimethyl betaine, cocoamidopropylbetaine, tallow bis(hydroxyethyl) betaine, hexadecyldimethylbetaine, cocodimethylbetaine, alkyl amido propyl sulfo betaine, alkyl dimethyl amine betaine, coco amido propyl dimethyl betaine, alkyl amido propyl dimethyl amine betaine, cocamidopropyl betaine, lauryl betaine, laurylamidopropl betaine, cocamido betaine, lauryl amido betaine, alkyl amino betaine, alkyl amido betaine, coco betaine, lauryl betaine, diemethicone propyl PG-betaine, oleyl betaine, N-alkyldimethyl betaine, coco biguamide derivative, Cs amido betaine, C12 amido betaine, lauryl dimethyl betaine, alkylamide propyl betaine, amido betaine, alkyl betaine, cetyl betaine, oleamidopropyl betaine, isostearamidopropyl betaine, lauramidopropyl betaine, 2-alkyl- / V-carboxymethyl- / V-hydroxyethyl imidazolinium betaine, 2-alkyl- / V-carboxyethyl- / V-hydroxyethyl imidazolinium betaine, 2-alkyl- / V-sodium carboxymethyl- / V-carboxymethyl oxyethyl imidazolinium betaine, A / -alkyl acid amidopropyl- / V, / V-dimethyl- / \ / -(3-sulfopropyl)-ammonium-betaine, A / -alkyl-A / ,A / -dimethyl-A / -(3-sulfopropyl)-ammonium-betaine, cocodimethyl betaine, apricotamidopropyl betaine, isostearamidopropyl betaine, myristamidopropyl betaine, palmitamidopropyl betaine, alkamidopropyl hydroxyl sultaine, cocamidopropyl hydroxyl sultaine, undecylenamidopropyl betaine, cocoamidosulfobetaine, alkyl amido betaine, C12 / 18 alkyl amido propyl dimethyl amine betaine, lauryldimethyl betaine, ricinol amidobetaine, tallow aminobetaine. The combination of surfactants (when present) used in the compositions of the third aspect may be free of alkoxylated compounds which could lead to the presence of 1,4-dioxane, or sulfates which can lead to skin and ocular irritation, or linear and / or branched alkylbenzene sulfonates which are derived from petrochemical sources. The composition may of the third aspect may comprise a soap, by which we mean a metal or alkanolamine salt of a fatty acid. Suitable soaps may comprise a fatty acid anion with from 4 to 36 carbon atoms and a cation selected from an alkanolamine, potassium and / or sodium. Examples of suitable soaps include potassium palm-kernelate, sodium palm-kernelate, potassium oleate and sodium stearate. Preferably, the composition of the third aspect may be a hair care or hair benefit composition. Suitably the composition enhances at least one property of the hair in use. Suitable hair care or hair benefit compositions include, for example, shampoo compositions, conditioning compositions, hairstyling compositions. The composition of the third aspect may be an anti-frizz composition. The anti-frizz composition may, for example, comprise from 0.1 to 15 wt% (preferably from 2 to 15 wt%) of a polyol ester as defined herein and from 65 to 98 wt% of a carrier or solvent. The composition of the present invention may be a shampoo, for example a transparent shampoo or a pearlescent shampoo. The shampoo may, for example, comprise from 0.5 to 1.5 wt% of a polyol ester as defined herein and from 60 to 98 wt% of a carrier or solvent (such as water). For example, the shampoo may comprise from 0.1 to 5 wt% of a polyol ester as defined herein, from 0.01 to 2 wt% of a conditioning agent, from 3 to 25 wt% of surfactant, from 0.1 to 3 wt% of a pearlising agent, from 0.1 to 5 wt% of one or more further additional components and from 60 to 98 wt% (preferably from 60 to 96.69 wt%) of a carrier or solvent (such as water). Preferably, the shampoo may, for example, comprise from 0.5 to 1.5 wt% of a polyol ester as defined herein, from 0.1 to 1 wt% of a conditioning agent, from 5 to 20 wt% of surfactant, from 0.5 to 2.5 wt% of a pearlising agent, from 0.1 to 5 wt% of one or more further additional components and from 60 to 98 wt% (preferably from 60 to 93.8 wt%) of a carrier or solvent (such as water). In one embodiment, the shampoo comprises from 0.1 to 5 wt% of a polyol ester as defined herein, from 3 to 25 wt% of an anionic surfactant, from 0.1 to 5 wt% of a non-ionic surfactant and / or amphoteric or zwitterionic surfactant (preferably an alkyl glucoside and / or a betaine-based surfactant), and from 60 to 96.8 wt% of a carrier or solvent (such as water). In one embodiment, the shampoo comprises from 0.1 to 5 wt% of a polyol ester as defined herein, from 0.01 to 2 wt% of hydroxypropyl guar hydroxypropyltrimonium chloride, from 3 to 25 wt% of sodium laureth sulfate and cocoamidopropyl betaine, from 0 to 5 wt% (or from 0.1 to 5 wt%) of caprylyl / capryl glucoside, and from 60 to 96.89 wt% of a carrier or solvent (such as water). The composition of the third aspect may be a conditioner, for example a leave in or rinse out conditioner, preferably a leave in conditioner. The conditioner may, for example, comprise from 0.1 to 2 wt% of a polyol ester as defined herein, from 0.5 to 5 wt% of a conditioning agent, from 0.1 to 5 wt% of one or more further additional components and from 60 to 98 wt% of a carrier or solvent. The composition of the third aspect may be a hairstyling composition. Suitable hairstyling compositions may include hairsprays (aerosol and non-aerosol), gels (such as colouring gel and spray gels), lotions (such as colouring lotions), spritz creams, putty, pastes, clays, waxes, pomadee, mousses (such as pump mousses, aerosol mousses and hair colouring aerosol mousses), gel-to-mousses and powders. The composition of the third aspect may be a hair mousse. The hair mousse may, for example, comprise from 0.1 to 2 wt% of a polyol ester as defined herein, from 0.1 to 2 wt% of surfactant, from 0.5 to 5 wt% of a conditioning agent, from 0.1 to 5 wt% of an additional moisturising agent, plasticiser and / or texturising agent (such as glycerin), from 0.1 to 5 wt% of one or more further additional components and from 70 to 98 wt% of a carrier or solvent (such as water). The composition of the third aspect may be a hairspray composition. The composition of the third aspect may be in the form of an aerosol composition. When the composition is in the form of an aerosol composition, the composition may comprise a propellant as described herein. An aerosol composition may, for example, comprise further additional components selected from anti-corrosion agents, conditioning agents, additional shine agents, thermal protection agents, co-styling polymers, fragrances, neutralisers for styling polymers, rheology modifiers, pH adjustment agents, plasticisers, additional moisturising agents, carriers / solvents, slip agents, texturising agents, UV absorbers, wetting agents, emulsifiers, and other active ingredients. The carrier / solvent may comprise water or an ethanol / water mix. The composition of the third aspect may be in the form of a gel composition. A gel composition may, for example, comprise further additional components selected from anti-corrosion agents, anti-dandruff agents, chelating agents, texturising agents, conditioning agents, anti-static agents, additional shine agents, thermal protection agents, texture modifying agents, co-styling polymers, other active ingredients, fragrance, fragrance solubilising agents, hair colouring agents, neutralising agents for styling polymers, rheology modifiers, pH adjusters, plasticisers, additional moisturising agents, wetting agents, preservatives, product colouring agents, slip agents, carriers / solvents, UV absorbing agents, rheology modifiers, and viscosifiers. The composition of the third aspect may be used one or more times as a hair care or hair treatment composition. The composition may be in the form of shampoo, conditioner or hair styling product, for example a serum, wax, mousse, gel or spray or any other hair treatment form that could be used to provide general hair care benefits. Compositions which perform multiple functions, for example combined shampoo and conditioning compositions are also within the scope of the invention. The composition of the third aspect may, in use thereof, be contacted with keratinous material (especially hair) which is wet or dry. Suitably the composition of the third aspect may be applied to the keratinous material (especially hair) and spread across the surface of the keratinous material (especially hair). Preferably when the keratinous material is hair the composition may be rubbed into the hair in the manner of a shampoo and / or it may be combed through the hair. The composition of the third aspect may be left on the keratinous material (especially hair) or it may be removed from the keratinous material (especially hair). Suitably the composition may be rinsed using warm water. In some embodiments the composition of the third aspect may be contacted with the keratinous material (especially hair), spread throughout and then immediately removed. Suitably the composition of the third aspect may be removed from the keratinous material (especially hair) by rinsing, preferably by using water. In some embodiments the composition of the third aspect may be washed from the keratinous material (especially hair) by washing with a detergent composition. In some embodiments the composition of the third aspect may be mechanically removed from the keratinous material (especially hair), for example by brushing. In some embodiments in which the keratinous material is hair, the composition of the third aspect may be applied to the hair, spread throughout and rubbed into the hair, and then rinsed with water, in the manner of a shampoo. In some embodiments in which the keratinous material is hair, the composition of the third aspect may be applied to the hair, spread throughout the hair (optionally with combing), left on the hair for a short period and then rinsed from the hair with water, in the manner of a conditioner. In some embodiments in which the keratinous material is hair, the composition of the third aspect may be contacted with the hair and left on the hair in the manner of a styling product. The composition may be sprayed throughout the hair, rubbed throughout the hair, combed throughout the hair or otherwise spread through the hair in a manner known to those skilled in the art. In embodiments in which the composition is left on the hair, it suitably remains on the hair until the hair is next washed, although some of the composition may be brushed out or rubbed away during normal activity. In the method and use of the first and second aspects, and in use of the composition of the third aspect, the polyol ester or composition is suitably contacted with the keratinous material (especially hair) at ambient temperature. In some embodiments the polyol ester or composition may be contacted with the keratinous material (especially hair) at a temperature greater than the ambient temperature. In some embodiments the polyol ester or composition may be contacted with the keratinous material (especially hair) and the keratinous material (especially hair) carrying the polyol ester or composition may then be heated and / or manipulated and / or dried. Thus the hair may be dried using a hairdryer or straightened after the polyol ester or composition is applied. The composition of the third aspect may be applied to the keratinous material (especially hair) when it is heated. Such a heating step may involve commonly used heating techniques such as blow drying, or using tongs, straighteners or hoods etc. The composition of the third aspect may be used on a regular basis, for example every time the keratinous material (especially hair) is washed. Alternatively the composition may be used periodically on a less frequent basis, for example, every week or every month. The fourth aspect of the present invention provides a packaged keratinous material treatment product. The product comprises packaging, a composition housed in the packaging and instructions for use of the composition in the treatment of a suitable keratinous material, wherein the composition comprises one or more polyol esters. Suitable features of the composition, the polyol ester and the keratinous material are as described herein in relation to the first, second and third aspects. The keratinous material may, for example, be hair, nails, horns, claws or hooves. Preferably, the keratinous material is hair. Preferably, the packaged keratinous material treatment product is a packaged hair treatment product, such as a packaged hair care product. The packaged keratinous material treatment product may comprise any suitable packaging. Examples of suitable packaging include bottles, tubs, sachets, pouches, films, and boxes. The form of the packaging may depend on the form of the composition comprising the polyol ester. When the composition is a liquid composition, the packaging may be selected from a bottle, tub, sachet, or pouch. When the composition is a solid composition, the packaging may be selected from a sachet, pouch, film or box. Examples The invention will now be further described with reference to the following non-limiting examples. Example 1 - general method for esterification of polysaccharides (polyols) The polysaccharide and monocarboxylic ester were dissolved in DMF (15 mL, for 10 mmol of polysaccharide) in the presence of potassium carbonate (4wt%). The reaction mass was heated at 140°C for 8 hours, then DMF was removed in vacuo. The reaction product was redissolved in toluene, which was then removed in vacuo to provide the polysaccharide ester. Example 2 - general method for esterification of polyols The monocarboxylic acid was combined with the polyol. Tin(ll) ethylhexanoate (0.5 wt% relative to the total weight of reactants) was added. The reaction mass was heated at 160°C for 6 hours. The resulting polyol ester was decanted from the reaction flask, and no further purification was carried out. Polyol esters 1 to 6 were prepared, using the reactants, reaction stoichiometries and synthesis methods as set out in Table 1. Table 1 Polyol Ester Monocarboxylic acid (or ester) Polyol Prepared according to General Example Molar ratio of reactants 1 Methyl oleate Sucrose 1 6 : 1 2 Methyl erucate Sucrose 1 2 : 1 3 Erucic acid N- methyldiethanolamine 2 1 : 1 4 Erucic acid PPG 2000 2 2 : 1 5 Methyl erucate Sucrose 1 4 : 1 6 Methyl laurate Sucrose 1 6 : 1 Table 2 - abbreviations and chemical names PPG Poly(propylene glycol) A reduction in frizziness can be measured by the following procedure: Example 3 - method for assessing a reduction in frizziness Brazilian Curly hair tresses are pre-washed with a solution in water of 10% SLES-2 (sodium lauryl ethoxy sulfate having an average of 2 moles of ethylene oxide) and then blow dried with a RUSK ® PRO Engineering Speed Titanium Hair Dryer set at high temperature. The dried hair tresses are hung overnight in a humidity chamber at 80°F (circa 26.7°C) and 80% relative humidity (RH), allowing hair to frizz to 100%. Tresses are then removed from the humidity chamber, coded and photos are taken for each tress. These photos are used to calculate the initial total area of each hair tress using an image analysis software (Image Pro Plus ©version 7.0; Media Cybernetics, Inc). The hair tresses are wet down under running water for approximately 10 seconds and excess water removed by patting down the hair tresses on a towel. Test formulations are prepared. 1mL of the formulation is hand-applied to the hair tress and the tresses are hung again in the humidity chamber operated at the same initial temperature and humidity conditions (80°F 180% RH). Hair tresses are removed from the humidity chamber after 24 hours and photos are taken. The total area of the treated hair tress is calculated using Image Pro Plus® software. The degree of frizz reduction is calculated as the percent difference between the initial tress area and treated tress area. The process is performed in duplicate for each test formulation and the average percent difference recorded. Example 4 - evaluation of anti frizz properties 1% w / w test samples of the polyol ester with 0.2 wt% of a solution of 35 wt% sodium lauroamphoacetate and 5 wt% ethanol were prepared in spray bottles. Brazilian Curly Type 4 Hair Tresses (1.5 cm wide, 3 g) were washed twice with 1 mL of 10 wt% Sodium Laureth sulfate solution. The hair was then allowed to dry for 2 hours at ambient temperature before being placed in a humidity chamber at 80% RH (Relative Humidity) overnight at ambient temperature 20-22°C to fully ‘frizz’ the hair tress. Photos were taken of the frizzed hair tresses, and the hair area was calculated via image analysis to act as control to calculate the % frizz reduction (Tc: “control untreated tress"). 1.0 g of test solution was sprayed onto the hair tress and then massaged from root to tip to fully coat the hair and then combed twice with wide tooth comb. The tress was then placed in the humidity cabinet at 80%RH at ambient temperature 20-22°C for 6 hours, with photos taken initially (Ti: “initial treated tress") and then after 6 hours (Teh: “treated tress after 6h") to calculate the tress increase in area, via image analysis. % initial frizz reduction was calculated compared to the control swatch with the following formula: % initial frizz reduction = 100 — 6-7- x 100^ ' * i ' Retention of frizz reduction after 6 hours was calculated as follows: % anti frizz retention after 6 hours = Tc~T6h x lOOFor a polyol ester to be classed as a pass Tc~Ti the tress has to show an initial reduction in % area of >40% and maintain at least >50% of this reduction after 6 hours at 80% RH ambient temperature (20-22°C). The results are shown in Table 3. Table 3 - Antifrizz performance of polyol esters Polyol ester % Initial frizz reduction % Antifrizz retention after 6 hours Antifrizz performance 1 45 84 Pass 2 53 98 Pass 5 48 88 Pass Example 5 - Evaluation of dry combing performance Aqueous:ethanol (95:5) test emulsions were prepared with 0.2% w / w of a solution of 35 wt% sodium lauroamphoacetate and 1% w / w of the polyol ester. Double bleached Caucasian hair (5 g, 10 inch) was washed 3 times with a 10 wt% sodium laureth sulfate solution to remove any previous treatments. Hair was dried for 2 minutes with a hair dryer at heat setting 2 and speed 2. Hair was combed twice with a wide tooth comb to remove any knots and tangles before testing. Hair was combed on a Texture Analyser with an A500 narrow tooth comb for 20 cycles and combing force was determined for the untreated hair. The swatch was then treated by spraying 1.0 g of the polyol ester solution, across the whole of the hair and then massaging to give even coating of the hair fibres. Hair was dried for 1 minute, with hair dryer at heat setting 2 and speed 2. Hair was combed twice with a wide tooth comb to remove any knots and tangles before testing. Hair was combed on Texture Analyser with an A500 narrow tooth comb for 20 cycles and combing force was determined for the treated hair. The % reduction in combing force between treated and untreated swatch was calculated. The results are shown in Table 4. Table 4 - Dry combing performance of polyol esters Polyol ester % reduction in combing force 1 29.8 2 37 5 38 6 35.8 Unless otherwise stated herein, the reference to “liquid”, “gel” and “solid” refer to a state at 25 °C and standard pressure (101,325 Pa). Attention is directed to all papers and documents which are filed concurrently with or previous to this specification in connection with this application and which are open to public inspection with this specification, and the contents of all such papers and documents are incorporated herein by reference. All of the features disclosed in this specification (including any accompanying claims, and drawings), and / or all of the steps of any method or process so disclosed, may be combined in any combination, except combinations where at least some of such features and / or steps are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise. Thus, unless expressly stated otherwise, each feature disclosed is one example only of a generic series of equivalent or similar features. The 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 specification (including any accompanying claims, and drawings), or to any novel one, or any novel combination, of the steps of any method or process so disclosed.

Claims

1. A method of treating a keratinous material growing on a body, the method comprising contacting the keratinous material with a polyol ester, wherein the polyol ester is the reaction product of reactants comprising one or more first reactants and one or more second reactants, wherein the or each first reactant is a monocarboxylic acid or ester thereof and the or each second reactant is a polyol.

2. A use of a polyol ester to treat a keratinous material growing on a body, wherein the polyol ester is the reaction product of reactants comprising one or more first reactants and one or more second reactants, wherein the or each first reactant is a monocarboxylic acid or ester thereof and the or each second reactant is a polyol.

3. A composition for treating a keratinous material growing on a body, wherein the composition comprises one or more polyol esters, and wherein the or each polyol ester is the reaction product of reactants comprising one or more first reactants and one or more second reactants, wherein the or each first reactant is a monocarboxylic acid or ester thereof and the or each second reactant is a polyol.

4. The method, use or composition according to any preceding claim, wherein the or each first reactant is a monocarboxylic acid that contains from 2 to 40 carbon atoms, suitably from 4 to 30 carbon atoms, preferably from 6 to 20 carbon atoms, for example from 8 to 18 carbon atoms, or an ester thereof.

5. The method, use or composition according to any preceding claim, wherein the or each first reactant is a monocarboxylic acid selected from one more of hexanoic acid, octanoic acid, decanoic acid, lauric acid, myristic acid, myristoleic acid, palmitic acid, palmitoleic acid, stearic acid, oleic acid, elaidic acid, linoleic acid, linolelaidic acid, arachidic acid, arachidonic acid, behenic acid, and erucic acid, or an ester thereof.

6. The method, use or composition according to any preceding claim, wherein the or each first reactant is an ester of the monocarboxylic acid, preferably an alkyl ester, even more preferably a methyl ester.

7. The method, use or composition according to any preceding claim, wherein the or each second reactant is a polyol having from 2 to 10, preferably from 2 to 6, hydroxy groups.

8. The method, use or composition according to any preceding claim, wherein the or each second reactant is a polyol selected from one or more polyol of the formula (I) or (IA), one ormore of an alkoxylated polyol of formula (I) or (IA), one or more nitrogen containing polyol, and one or more polyol formed by reaction of a hydroxy substituted cyclic ester or cyclic carbonate with a suitable primary or secondary amine compound, wherein the polyol of formula (I) is of the formula H-(OR1)P-OH, wherein each R1 is independently an optionally substituted hydrocarbylene group and p is an integer of at least 1, and wherein the polyol of formula (IA) is of the formula H-(OR2)q-OH, wherein each R2 is independently an optionally substituted alkylene group and q is an integer of at least 1.

9. The method, use or composition according to any preceding claim, wherein the or each first reactant is a monocarboxylic acid or ester thereof selected from hexanoic acid, decanoic acid, lauric acid, stearic acid, oleic acid, erucic acid, methyl octanoate, methyl decanoate, methyl laurate, methyl stearate, methyl oleate, methyl linoleate, and methyl erucate; and the or each second reactant is a polyol selected from Tween 80, trimethylolpropane, sucrose, lactose, maltose, sorbitol, xylitol, N-methyldiethanolamine, glycerol, 2,2-bis(hydroxymethyl) propionic acid, PPG 2000, and 1,6-hexanediol.

10. The method, use or composition according to any of claims 1 to 8, wherein the or each first reactant is an ester (preferably a methyl ester) of lauric acid, oleic acid, or erucic acid; and the or each second reactant is a polyol of formula (I) or of formula (IA) which is a sugar derived compound in which R1 or R2 includes one or more hydroxy residues (such as glucose, fructose, trehalose, sucrose, lactose, maltose or sorbitol, preferably sorbitol or sucrose, preferably sucrose).

11. The method, use or composition according to any preceding claim, wherein the polyol ester is substantially free of silicon atoms.

12. The method, use or composition according to any preceding claim, wherein the keratinous material is hair.

13. The method, use or composition according to claim 12, wherein the hair is human hair or animal hair.

14. The method, use or composition according to any preceding claim, which provides a beneficial effect to or enhances a property of the keratinous material.

15. The method, use or composition according to claim 14, wherein the property is a conditioning effect.

16. The method, use or composition according to any preceding claim, wherein the property of the keratinous material that is changed, beneficially affected or enhanced may be one or more of the following:• reduction in frizziness• shine• gloss• softness• silkiness• moisturise level• thermal durability• protection against damage• strength• combability• smoothness• drying time.

17. The composition according to any of claims 3 to 16, which is an anti-frizz composition.

18. The composition according to any of claims 3 to 17, which is a shampoo or a bodywash,preferably a shampoo.

19. The composition according to claim 18, which is a leave in shampoo.

20. The composition according to any of claims 3 to 17, which is a conditioner, preferably aleave in conditioner.

21. The composition according to any of claims 3 to 20, wherein the composition is an animal (for example pet) care composition.

22. A packaged keratinous material treatment product comprising packaging, a composition housed in the packaging and instructions for use of the composition in the treatment of a suitable keratinous material growing on a body, wherein the composition comprises one or more polyol esters, and wherein the or each polyol ester is the reaction product of reactants comprising one or more first reactants and one or more second reactants, wherein the or each first reactant is a monocarboxylic acid or ester thereof and the or each second reactant is a polyol.A