Compositions and use of the compositions in personal care

Abstract

The present invention provides a composition comprising the reaction product of: a) a wax ester selected from jojoba oil, candelilla wax, rice bran wax, orange peel wax and mixtures thereof, wherein the wax ester is formed from a carboxylic acid component and an alcohol component; and b) a polyamine selected from diamines, triamines and tetramines, wherein the composition comprises: i) an amide formed from the reaction of the carboxylic acid component of the wax ester and the polyamine; and ii) free alcohol formed from the alcohol component of the wax ester. The invention further provides a composition comprising the reaction product of: a) a wax ester selected from jojoba oil, candelilla wax, rice bran wax, orange peel wax and mixtures thereof; and b) a polyamine selected from diamines, triamines and tetramines; wherein the wax ester is formed from a carboxylic acid component and an alcohol component and wherein the alcohol component of the wax ester is further reacted with: c) an acid selected from trimethylglycine, citric acid, amino acids, dicarboxylic acids and monocarboxylic acids; wherein the composition comprises: i) an amide formed from the carboxylic acid component of the wax ester and the polyamine; and ii) an ester formed from the alcohol component of the wax ester and the acid selected from trimethylglycine, citric acid, amino acids, dicarboxylic acids and monocarboxylic acids. Also provided are personal care formulations, methods and uses.

Description

[0001]2103173-000264 COMPOSITIONS AND USE OF THE COMPOSITIONS IN PERSONAL CARE Field of the Invention The present invention relates to compositions comprising the reaction product of a wax ester and a polyamine and the use of such compositions in personal care formulations, in particular for application to human skin or hair, preferably in hair care formulations. Background Personal care is necessary for human well-being. The need for personal care formulations such as hair care formulations is well-known. Such formulations may be used for cleaning, conditioning or styling human hair or addressing various problems encountered with human hair, for example, by treatments such as bleaching or colouring or by environmental factors, such as sun, heat and pollution. Some hair care formulations are also directed at improving qualities of the hair such as strength, shine or ease of brushing / combing. There is a continual need for the development of improved personal care formulations, in particular hair care formulations, and compositions for use as ingredients in such formulations. Summary of the Invention It is an object of the present invention to address one or more disadvantages associated with the prior art. Surprisingly, it has been found by the inventors that the reaction product of a wax ester and a polyamine selected from diamines, triamines or tetramines has a beneficial effect on the condition of human hair, as measured and described herein. According to a first aspect, the present invention provides a composition comprising the reaction product of: a) a wax ester selected from jojoba oil, candelilla wax, rice bran wax, orange peel wax and mixtures thereof, wherein the wax ester is formed from a carboxylic acid component and an alcohol component; and 2103173-000264 b) a polyamine selected from diamines, triamines and tetramines, wherein the composition comprises: i) an amide formed from the reaction of the carboxylic acid component of the wax ester and the polyamine; and ii) free alcohol formed from the alcohol component of the wax ester. According to a second aspect, the present invention provides a composition comprising the reaction product of: a) a wax ester selected from jojoba oil, candelilla wax, rice bran wax, orange peel wax and mixtures thereof; and b) a polyamine selected from diamines, triamines and tetramines; wherein the wax ester is formed from a carboxylic acid component and an alcohol component and wherein the alcohol component of the wax ester is further reacted with: c) an acid selected from trimethylglycine, citric acid, amino acids, dicarboxylic acids and monocarboxylic acids; wherein the composition comprises: i) an amide formed from the carboxylic acid component of the wax ester and the polyamine; and ii) an ester formed from the alcohol component of the wax ester and the acid selected from trimethylglycine, citric acid, amino acids, dicarboxylic acids and monocarboxylic acids. According to a third aspect, the present invention provides a personal care formulation comprising a composition according to the first or second aspect and a personal care ingredient. According to a fourth aspect, the present invention provides a hair care formulation comprising a composition according to the first or second aspect and a hair care ingredient, wherein the hair care formulation is for topical application to hair. According to a fifth aspect, the present invention provides a method of treating hair comprising the steps of: i) applying to the hair a composition according to the first or second aspect; and ii) optionally, rinsing the composition off the hair. 2103173-000264 According to a sixth aspect, the present invention provides the use of a composition according to the first or second aspect for the conditioning of hair. All of the features described herein may be combined with any of the above aspects of the invention, in any combination. All such combinations are hereby envisioned and encompassed. Detailed Description of the Invention It will be understood that any upper or lower quantity or range limit used herein may be independently combined. It will be understood that, when describing the number of carbon atoms in a substituent group (e.g., ‘C1 to C6’), the number refers to the total number of carbon atoms present in the substituent group, including any present in any branched groups. Additionally, when describing the number of carbon atoms in, for example fatty acids, this refers to the total number of carbon atoms including the one at the carboxylic acid, and any present in any branch groups. The term ‘personal care’ means human personal care. The term ‘hair care’ means human hair care. A personal care ingredient is suitable for use on the human body. A hair care ingredient is suitable for use on human hair. Many of the chemicals which may be used to produce the composition of the present invention are obtained from natural sources. Such chemicals typically include a mixture of chemical species due to their natural origin. Due to the presence of such mixtures, various parameters defined herein can be an average value and may be non-integral. Composition of the Invention A composition according to the invention comprises the reaction product of: a) a wax ester selected from jojoba oil, candelilla wax, rice bran wax, orange peel wax and mixtures thereof; and b) a polyamine selected from diamines, triamines and tetramines, wherein the wax ester is formed from a carboxylic acid component and an alcohol component, and the reaction product comprises: 2103173-000264 i) an amide formed from the carboxylic acid component of the wax ester and the polyamine; and ii) free alcohol formed from the alcohol component of the wax ester. Another composition according to the invention comprises the reaction product of: a) a wax ester selected from jojoba oil, candelilla wax, rice bran wax, orange peel wax and mixtures thereof; and b) a polyamine selected from diamines, triamines and tetramines; wherein the wax ester is formed from a carboxylic acid component and an alcohol component and wherein the alcohol component of the wax ester is further reacted with: c) an acid selected from trimethylglycine, citric acid, amino acids, dicarboxylic acids and monocarboxylic acids; wherein the composition comprises: i) an amide formed from the carboxylic acid component of the wax ester and the polyamine; and ii) an ester formed from the alcohol component of the wax ester and the acid selected from trimethylglycine, citric acid, amino acids, dicarboxylic acids and monocarboxylic acids. Preferably the polyamine does not comprise a quaternary amine group. This may be advantageous because it is generally understood that quaternary ammonium groups do not have a particularly good environmental effect. Recent studies, including “Quaternary ammonium compounds (QACs): a review on occurrence, fate and toxicity in the environment”, Zhang C et al., Sci Total Environ, 2015 Jun 15; 518-519; 352-62, have shown that some quaternary ammonium compounds are toxic to aquatic organisms including fish, daphnids, algae, rotifer and microorganisms employed in wastewater treatment systems. Preferably the polyamine comprises at least one primary amine group. The primary amine group may advantageously provide a group which will react rapidly with the carboxylic acid component of the wax ester. The polyamine may comprise one primary amine group. The polyamine may comprise two primary amine groups. The polyamine may comprise at most 4 primary amine groups, preferably at most 3, more preferably at most 2. 2103173-000264 Preferably the polyamine comprises at least one group selected from: secondary amine groups and tertiary amine groups. The polyamine may comprise at least one secondary amine group. The polyamine may comprise at most 4 secondary amine groups, preferably at most 3, more preferably at most 2. The polyamine may comprise at least one tertiary amine group. The polyamine may comprise at most 4 tertiary amine groups, preferably at most 3, more preferably at most 2. Preferably the polyamine comprises one tertiary amine group. The tertiary amine group may advantageously provide a beneficial effect when present in a hair conditioning agent (HCA). Preferably the polyamine is selected from diamines and triamines, more preferably selected from diamines. Preferably the polyamine is a diamine which comprises one primary amine group and one tertiary amine group. The polyamine may be selected from diethylenetriamine (DETA), triethylenetetramine (TETA), tetraethylenepentamine (TEPA) and dimethylaminopropylamine (DMAPA). Preferably the polyamine is dimethylaminopropylamine (DMAPA). The structure of DMAPA may be represented by formula (I) below: The wax ester is formed from a carboxylic acid component and an alcohol component. Preferably the carboxylic acid component comprises at least 9 carbon atoms, preferably at least 11 carbon atoms, more preferably at least 13. The carboxylic acid component may comprise at most 60 carbon atoms, preferably at most 50 carbon atoms, more preferably at most 40 carbon atoms. Preferably the alcohol component comprises at least 11 carbon atoms, preferably at least 13 carbon atoms, more preferably at least 15. The alcohol 2103173-000264 component may comprise at most 60 carbon atoms, preferably at most 50 carbon atoms, more preferably at most 40 carbon atoms. Preferably the wax ester has an acid value of less than 40, more preferably less than 30, more preferably less than 20, particularly less than 10 mg KOH / g. Preferably the wax ester has an iodine value of more than 10, more preferably more than 30, more preferably more than 50 mg KOH / g. Preferably the wax ester has a saponification value of more than 20, more preferably more than 50 mg KOH / g. The wax ester is selected from jojoba oil, candelilla wax, rice bran wax, orange peel wax and mixtures thereof. Preferably the wax ester comprises at least 50 wt% jojoba oil on the basis of the total amount of wax ester, more preferably at least 60 wt%, more preferably at least 70 wt%, particularly preferably at least 80 wt%. Particularly preferably the wax ester is jojoba oil. Preferably the reactants are used at a molar ratio of one mole of wax ester to 0.5 to 3 moles of polyamine, more preferably one mole of wax ester to 0.8 to 2 moles of polyamine, more preferably one mole of wax ester to 0.9 to 1.8 moles of polyamine, particularly one mole of wax ester to 1 to 1.5 moles of polyamine. The composition of the invention may have a saponification value of at most 100 mg KOH / g, preferably at most 90 mg KOH / g, preferably at most 80 mg KOH / g, preferably at most 70 mg KOH / g, preferably at most 60 mg KOH / g, preferably at most 50 mg KOH / g. The composition of the invention may have a saponification value of at least 0.1 mg KOH / g, preferably at least 0.5 mg KOH / g, preferably at least 1 mg KOH / g. The composition of the invention may have a hydroxyl value of at most 110 mg KOH / g, preferably at most 100 mg KOH / g, preferably at most 90 mg KOH / g, preferably at most 80 mg KOH / g. The composition of the invention may have a hydroxyl value of at least 0.1 mg KOH / g, preferably at least 0.5 mg KOH / g, preferably at least 1 mg KOH / g. The composition of the invention may have an acid value of at most 100 mg KOH / g, preferably at most 90 mg KOH / g, preferably at most 80 mg KOH / g, preferably at most 70 mg KOH / g, preferably at most 60 mg KOH / g, preferably at most 50 mg KOH / g. The 2103173-000264 composition of the invention may have an acid value of at least 0.1 mg KOH / g, preferably at least 0.5 mg KOH / g, preferably at least 1 mg KOH / g. Preferably the composition of the invention has at least one of: I) a saponification value from 0.1 to 50 mg KOH / g; and / or II) a hydroxyl value from 0.1 to 100 mg KOH / g. Preferably the composition of the invention has at least one of: I) a saponification value from 0.1 to 100 mg KOH / g; and / or II) a hydroxyl value from 0.1 to 100 mg KOH / g; and / or III) an acid value from 0.1 to 50 mg KOH / g. Preferably, the composition of the invention is substantially free from quaternary ammonium compounds. By the use of the term “substantially free from”, it is meant that the composition comprises preferably less than 10% by weight, more preferably less than 5% by weight, yet more preferably less than 2% by weight and most preferably, less than 1% by weight based on the total weight of the composition. Preferably, the composition comprises no quaternary ammonium compounds. Preferably, the composition of the invention is substantially free from silicone compounds. By the use of the term “substantially free from”, it is meant that the composition comprises preferably less than 10% by weight, more preferably less than 5% by weight, yet more preferably less than 2% by weight and most preferably, less than 1% by weight based on the total weight of the composition. Preferably, the composition comprises no silicone compounds. The composition of the invention may be a topical composition, preferably a topical composition for application to skin or hair (i.e. human skin or hair), more preferably a topical composition for application to hair. The hair may be natural, bleached, straightened or otherwise chemically treated. The hair may be African, Asian, European, Caucasian, Hispanic or another hair type. The hair may be naturally straight, wavy, curly or coily. The composition of the invention may be a cosmetic composition. The composition of the invention may be self-emulsifying. By self-emulsifying is meant that the composition may form an emulsion in an aqueous formulation without needing to use a 2103173-000264 further emulsifier. A pH adjuster may be required to adjust the pH of the formulation to enable the composition of the invention to form an emulsion without the use of a further emulsifier. Personal Care and / or Hair Care Formulations The invention may provide a personal care formulation comprising the composition of the invention and a personal care ingredient. Preferably the personal care formulation is for topical application to skin or hair. The personal care ingredient may be selected from a hair cleaning agent, hair conditioning agent, hair styling agent, anti-dandruff agent, hair growth promoter, perfume, sunscreen, sunblock, pigment, moisturizer, film former, hair color, make-up agent, thickening agent, emulsifier, humectant, emollient, antiseptic agent, deodorant active, dermatologically acceptable carrier, surfactant, abrasive, absorbent, fragrance, colorant, essential oil, astringent, anti-acne agent, anti-caking agent, anti-foaming agent, anti-oxidant, binder, enzyme, enzyme inhibitor, enzyme activator, coenzyme, botanical extract, ceramide, buffering agent, bulking agent, chelating agent, cosmetic biocide, external analgesic, substantivity increasing agent, opacifying agent, pH adjuster, reducing agent, sequestrant, skin bleaching and / or lightening agent, skin conditioning agent, skin soothing and / or healing agent, skin treating agent, vitamin or preservative. Preferably the personal care ingredient is selected from a cleaning agent, hair conditioning agent, skin conditioning agent, hair styling agent, antidandruff agent, hair growth promoter, perfume, sunscreen compound, pigment, moisturizer, film former, humectant, alpha- hydroxy acid, hair colour, make-up agent, thickening agent, antiseptic agent, deodorant, surfactant, pH adjuster. The personal care formulation may be a skin care and / or hair care formulation, preferably a hair care formulation. The personal care formulations of the invention may be emulsions (such as oil in water emulsions or water in oil emulsions); anhydrous formulations (such as hair oils, hair sprays / serums); detergent formulations; preferably oil in water emulsions and / or detergent formulations. Personal care emulsion formulations may be pastes, creams, liquids or 2103173-000264 milks. In the field of hair care, formulations of the invention may aim to provide a pleasant aesthetic feel to the hair as well as improving manageability and visual appearance. The personal care formulation may have a range of different consistencies and / or viscosities depending on the desired end use of the formulation. The personal care formulation is preferably a fluid at room temperature. The personal care formulation may be a powder or solid formulation at room temperature. The applications of such formulations include, in the field of personal care products, moisturizers, body butters, gel creams, high perfume containing products, perfume creams, hair conditioners, hair relaxer formulations, hair shampoos, hair styling products, leave-on hair products, water-free products, anti-perspirant and deodorant products, cleansers, 2-in- 1 foaming emulsions, emulsifier free products, mild formulations, scrub formulations e.g. containing solid beads, silicone in water formulations, pigment containing products, sprayable emulsions such as hair detanglers, colour cosmetics, shower products, make-up remover, eye make-up remover, and wipes. More preferably, the applications of such formulations include hair conditioners, hair relaxer formulations, hair shampoos, hair styling products, leave-on hair products and sprayable emulsions such as hair detanglers. Preferably the personal care formulation is selected from a shampoo, a leave-on conditioner, a rinse-off conditioner, and a hair styling product. Preferably, the composition of the invention is the only hair conditioning agent (HCA) present in the personal care formulation. Preferably, the formulation is free from additional hair conditioning agents, for example quaternised ammonium compounds or silicones. Preferably, the composition of the invention is present at a low or medium concentration in the personal care (or hair care) formulation. Preferably, the composition of the invention is present in the formulation at a concentration of at least 0.01% w / w, preferably at least 0.1% w / w, more preferably at least 0.5% w / w and most preferably at least 0.8% w / w based on the total weight of the formulation. Preferably, the composition of the invention is present in the formulation at a concentration of up to 40% w / w, up to 30% w / w, up to 20% w / w, preferably up to 15% w / w, more preferably up to 10% w / w and most preferably up to 8% w / w based on the total weight of the formulation. 2103173-000264 Preferably, the personal care (or hair care) formulation comprises a chassis to carry the composition of the invention. Preferably, the chassis comprises a relatively high concentration of water. Preferably, water is present in the personal care formulation at a concentration of at least 20% w / w, preferably at least 25% w / w, more preferably at least 28% w / w and most preferably at least 30% w / w of the total formulation. Preferably, water is present in the personal care formulation at a concentration of up to 99% w / w, preferably up to 96% w / w, preferably, up to 94% w / w and most preferably up to 90% w / w of the total formulation. Alternatively, the formulation may be substantially water free. The formulation may not comprise water. Preferably, the personal care (or hair care) formulation is acidic or mildly basic. Preferably the formulation has a pH of between 1 and 8, preferably between 2 and 7.5, more preferably of between 3 and 7.5, and most preferably of between 4 and 7.5. The personal care (or hair care) formulation may comprise additional components, for example, one or more emulsifiers, emollients, carriers, and / or surfactants. The personal care (or hair care) formulation may further comprise an emulsifier. Preferably, the emulsifier is a non-ionic surfactant which is capable of forming an oil-in- water emulsion. The emulsifier may be naturally derived. Examples of suitable emulsifiers include ethoxylated sorbitan esters, ethoxylated glyceryl esters, ethoxylated fatty alcohols (including lanolin alcohols), ethoxylated fatty acids (including lanolin fatty acids), glycerol fatty acid mono-esters, glycol fatty acid mono and di-esters, sugar esters (fatty acid mono and di esters of sucrose), fatty acid polyol (polyethylene glycol) esters, fatty alcohols (which may also act as co-emulsifiers), fatty acids and / or phosphate esters thereof, cationic surfactants or monoalkyl tertiary amines such as stearamidopropyl dimethylamine or behenamidopropyl dimethylamine. When present in the formulation, the emulsifier is preferably present at a concentration of at least 0.2% w / w, preferably at least 0.5% w / w, more preferably at least 0.9% w / w and most preferably at least 1.1% w / w based on the total weight of the formulation. Preferably, the emulsifier is present in the formulation at a concentration of up to 20% w / w, preferably up to 12% w / w, more preferably up to 7% w / w and most preferably up to 5% w / w based on the total weight of the formulation. Alternatively, the formulation may be free of additional emulsifier. 2103173-000264 The personal care (or hair care) formulation may further comprise at least one viscosity modifier, able to modify the viscosity of the formulation, more preferably a viscosity builder, able to increase the viscosity of the formulation. Preferably, the viscosity modifier is a fatty alcohol, preferably a C12to C20alcohol, more preferably a C16to C18alcohol, or a mixture thereof. Suitable alcohols for use as viscosity modifiers in the personal care formulation include cetyl alcohol, stearyl alcohol and cetearyl alcohol. The formulations according to the present invention may also contain other additional emollient materials, preferably emollient oils. Preferably, the emollient oil is a non-polar oil. Examples of emollient oils which are suitable for use in the present formulation include plant-based oils, mineral or paraffin oil; esters of fatty acids and fatty alcohols, preferably C10-C20acids or alcohols, although isopropyl esters may be used; fatty acid glycol esters; fatty acid triglycerides; esters and diesters of alkoxylated fatty alcohols; botanical (plant) extracts; and hydrocarbons, preferably C12-C18.Preferably, the emollient oil is a plant- based oil. When present in the formulation the, or each, additional emollient is preferably present at a concentration of at least 1% and up to 30% by weight based on the total weight of the formulation. The personal care (or hair care) formulation according to the present invention may also contain one or more surfactants, for example sodium lauryl ether (or laureth) sulphate and / or cocamidopropyl betaine. When present in the formulation, the or each surfactant is preferably present at a concentration of between 1% and 20%, preferably between 2% and 15% and more preferably between 4% and 10% by weight based on the total weight of the formulation. The personal care (or hair care) formulation according to the present invention may also contain one or more cationic ingredients. When present in the formulation, the or each cationic ingredient is preferably present at a concentration of between 0.01% and 10%, preferably between 0.05% and 8% and more preferably between 0.1% and 5% by weight based on the total weight of the formulation. The personal care (or hair care) formulation according to the present invention may also contain one or more silicones. When present in the formulation, the or each silicone is preferably present at a concentration of between 0.05% and 10%, preferably between 2103173-000264 0.1% and 8% and more preferably between 0.5% and 5% by weight based on the total weight of the formulation. The personal care (or hair care) formulation according to the present invention may also contain one or more film forming components. When present in the formulation, the or each film forming component is preferably present at a concentration of between 0.01% and 5%, preferably between 0.05% and 3% and more preferably between 0.1% and 2% by weight based on the total weight of the formulation. Many other components that may be used in the formulations according to the present invention. These components may be oil soluble, water soluble or non-soluble. Examples of such materials include: (i) preservatives, preferably those approved for cosmetic use, particularly as listed in Annex 5 of the European Union cosmetics regulations. The preservative preferably comprises sodium benzoate, potassium sorbate or phenoxyethanol. The preservative may comprise Dehydroacetic Acid and its salts, Benzyl Alcohol & Salicylic Acid & Glycerine & Sorbic Acid and their salts, Gluconolactone & Sodium Benzoate, Sorbic acid (and) benzoic acid and their salts, Blends of glycols and acids or salts, Propanediol (and) Caprylyl glycol (and) Caprylhydroxamic acid, Caprylhydroxamic acid, Octenidine HCL, Sodium Hydroxymethylglycinate. The preservative may be used at a concentration in the range from 0.5 wt.% to 2 wt.% based on the total weight of the composition; (ii) perfumes, when used typically at a concentration in the range from 0.1 wt.% to 10 wt.% more usually up to about 5 wt.% and particularly up to about 2 wt.%, based on the total weight of the composition; (iii) humectants or solvents such as alcohols, polyols such as glycerol and polyethylene glycols, when used typically at a concentration in the range from 1 wt.% to 10 wt.% based on the total weight of the composition; (iv) alpha hydroxy acids such as glycolic, citric, lactic, malic, tartaric acids and their esters; self-tanning agents such as dihydroxyacetone; (v) vitamins and their precursors including: (a) Vitamin A, e.g. as retinyl palmitate and other tretinoin precursor molecules, (b) Vitamin B, e.g. as panthenol and its derivatives, (c) Vitamin C, e.g. as ascorbic acid and its derivatives, (d) Vitamin E, e.g. as tocopheryl acetate, (e) Vitamin F, e.g. as polyunsaturated fatty acid esters such as gamma- linolenic acid esters; 2103173-000264 (vi) skin care agents such as ceramides either as natural materials or functional mimics of natural ceramides; (vii) natural phospholipids, e.g. lecithin; (viii) vesicle-containing formulations; (ix) botanical extracts with beneficial skin care properties; (x) skin whiteners such as kojic acid, arbutin and similar materials; (xi) skin repair compounds actives such as Allantoin and similar series; (xii) caffeine and similar compounds; (xiii) cooling additives such as menthol or camphor; (xiv) insect repellents such as N,N-diethyl-3-methylbenzamide (DEET) and citrus or eucalyptus oils; (xv) essential oils; and (xvi) pigments, including microfine pigments, particularly oxides and silicates, e.g. iron oxide, particularly coated iron oxides, and / or titanium dioxide, and ceramic materials such as boron nitride, or other solid components, such as are used in make-up and cosmetics, to give suspoemulsions, typically used in an amount in the range from 1 wt.% to 15 wt.%, but usually at least 5 wt.%, and particularly about 10 wt.% based on the total weight of the formulation. The formulations may comprise a fragrance-imparting material to provide a pleasant scent. In one aspect, a scent is provided from a natural source, such as but not limited to alfalfa, almond, amber, angelica root, anise, apple, apricot, banana, basil, bay, bay laurel, benzoin, bergamot, bitter orange, black pepper, bois de rose (rosewood), cajeput, cardamom, carrot seed, cedarwood, cinnamon, citronella, citrus, clary sage, clove, cocoa, coconut, coffee, coriander, cranberry, cypress, elemi, eucalyptus globulous, eucalyptus, fennel, frankincense, galbanum, geranium, German chamomile, ginger, grapefruit, helichrysum, hyssop, jasmine, juniper berry, lavender, lemon, lemongrass, lily, linden blossom, mango, marjoram, melissa, mint, myrrh, myrtle, neroli, niaouli, nutmeg, orange, oregano, palm, parsley, patchouli, peach, peppermint, petitgrain, pine, pineapple, raspberry, Roman chamomile, rose, rosemary, sandalwood, spearmint, spruce, strawberry, tea, thyme, vanilla, vetiver, violet, yarrow, ylang ylang, and the like. Preferably, the fragrance is selected from mint or vanilla. 2103173-000264 The invention may provide a hair care formulation comprising the composition of the invention and a hair care ingredient. Preferably the hair care formulation is for topical application to human hair. The hair care ingredient may be selected from shine enhancers, moisturisers, herbal additives, hair strengtheners, vitamin additives, colorants, hair thickening agents; setting and styling agents; ultraviolet absorbers; silicone oils; essential oils and fragrances; thickening or viscosity-enhancing agents; detergents; stabilising agents; emollients; chelating agents; sequestering agents; preservatives; disinfectants; anti-oxidants / radical scavengers; antistatic agents; conditioning agents; detangling ingredients; emulsifying or dispersing agents. Preferably the hair care formulation is a hair cleansing, conditioning, de-tangling, colour- protecting or styling formulation, particularly preferably a hair cleansing or conditioning formulation. Preferably the hair care formulation is selected from a shampoo, a leave-on conditioner, a rinse-off conditioner, and a hair styling product. Preferably, the composition of the invention is present at a low concentration in the hair care formulation. Preferably, the composition of the invention is present in the formulation at a concentration of at least 0.01% w / w, preferably at least 0.1% w / w, more preferably at least 0.5% w / w and most preferably at least 0.8% w / w based on the total weight of the formulation. Preferably, the composition of the invention is present in the formulation at a concentration of up to 20% w / w, preferably up to 15% w / w, more preferably up to 10% w / w and most preferably up to 8% w / w based on the total weight of the formulation. The hair care formulation may comprise a silicone fluid or oil such as dimethylpolysiloxane, dimethyl silicone, highly polymerised methyl polysiloxane, and methyl polysiloxane, known generically as dimethicone, cyclic oligomeric dialkylsiloxanes, such as the cyclic oligomers of dimethylsiloxane, known generically as cyclomethicone. The concentration of silicone oil in the formulation may preferably be in the range from 0.1 wt.% to 40 wt.%, more preferably 0.3 wt.% to 20 wt.%, particularly 0.5 wt.% to 5 wt.%, and especially 1 wt.% to 1.5 wt.% based on the total weight of the formulation. Alternatively, the hair care formulation may not comprise a silicone compound. 2103173-000264 The formulation may be in the form of an aqueous “leave on” or an aqueous “rinse off” end- use product. For such formulations, a dilute solution may be used. Preferably, a buffered solution is used, in which the pH of the solution is adjusted to mildly acidic, with a pH in the range of from 4 to 6. In the case of rinse-off formulations, instructions are provided to wash off the diluted formulation after application. Depending on the level of treatment required, such instructions may also require the product to remain on the hair for some time, such as from 1 to 30 minutes. For leave-on formulations, the washing off step is omitted. Where the formulation is a hair shampoo or conditioner which functions to make the hair straighter, the shampoo or conditioner may be in the form of a dispersion, emulsion or solution. One preferred system is one that forms liquid crystals. The liquid crystals are preferably lyotropic liquid crystals (i.e. both concentration and temperature dependent), more preferably lamellar phase liquid crystals, and particularly L alpha phase (neat) liquid crystals. The formulation may contain many different types of functional ingredients such as; (i) cationic hair conditioning agents, e.g. ethoxylated phosphate fatty quats, such as those sold by Croda as ArlasilkTM; fatty amido amines, such as those sold by Croda as IncromineTM; fatty quats, such as those sold by Croda as IncroquatTM, CrodazosoftTM, RejuvasoftTMor VibraRicheTMtypically used at a concentration in the range from 1 wt.% to 5 wt.% based on the total weight of the formulation. These are typically combined with polymeric hair conditioning cationic materials such as quaternised cellulose sold by Croda as CrodacelTMand MiruStyleTM, quaternised proteins, such as those sold by Croda, as CroquatTM, CrosilkquatTM, KerestoreTMand HydrotriticumTM. (ii) fatty alcohols, e.g. stearyl, cetearyl, cetyl, oleyl alcohols, used typically at a concentration range of 2 wt.% to 5 wt.% based on the total weight of the formulation. (iii) humectants or solvents, e.g. alcohols and polyols such as glycerol and polyethylene glycols, when used typically at a concentration in the range from 1 wt.% to 10 wt.% based on the total weight of the formulation; (iv) reconstructors, e.g. hydrolysed proteins such as wheat protein, which function to penetrate the hair and strengthen the hair structure through polymer crosslinking; (v) glossing or detangling materials which bind to the hair and reflect light, e.g. silicones such as dimethicone, phenyltrimethicone, dimethiconol and / or trimethylsilylamodimethicone, usually at a concentration in the range from 0.2 wt.% to 10 wt.% based on the total weight of the formulation; 2103173-000264 (vi) acidity regulators, e.g. citric acid, lactic acid, which generally maintain the pH of the conditioner at about 4 to 6; (vii) thermal protectors, usually heat-absorbing polymers, which shield the hair against excessive heat, e.g. caused by blow-drying or curling irons or hot rollers such as for instance those sold by Croda as MirustyleTMMFP (quaternised starch); and (viii) UV protection agents, to protect hair or formulation components from degradation by UV light, such as those sold by Croda as CrodasorbTMUV-HPP. Method of the Invention According to a second aspect, the invention provides a method of treating hair comprising the steps of: i) applying to hair a composition of the invention; and ii) optionally, rinsing the composition off the hair. The method of treating hair may comprise one or more steps selected from bleaching, colouring, straightening, perming, curling, relaxing, fixing, holding, shaping, styling, thermal treatment, cleaning or conditioning of hair. Preferably the method of treating hair comprises bleaching, colouring, shaping, styling, cleaning or conditioning of hair, more preferably shaping, styling, cleaning or conditioning of hair, particularly preferably cleaning or conditioning of hair. The hair may be natural, bleached, straightened or otherwise chemically treated. The hair may be African, Asian, European, Caucasian, Hispanic or another hair type. The hair may be naturally straight, wavy, curly or coily. Preferably, the method of treating hair or the application of the composition of the invention to hair has an effect selected from one or more of: a reduction in wet combing force, a reduction in wet combing work done, a reduction in dry combing force, a reduction in dry combing work done, an improvement in smoothness, an improvement in wet detangling, an improvement in dry detangling, a reduction in hair breakage, preferably measured as described herein. The composition of the invention may comprise any of the features described herein. The composition of the invention may be part of (or present in) a formulation which comprises any of the features described herein. 2103173-000264 Use of the Invention According to a third aspect, the invention provides the use of a composition of the invention for the treatment of hair. The composition may comprise any of the features described herein. The composition of the invention may be part of (or present in) a formulation which comprises any of the features described herein. Preferably the treatment of hair is the conditioning of hair. Preferably the use has an effect selected from one or more of: a reduction in wet combing force, a reduction in wet combing work done, a reduction in dry combing force, a reduction in dry combing work done, an improvement in smoothness, an improvement in wet detangling, an improvement in dry detangling, a reduction in hair breakage, preferably measured as described herein. Any of the features described herein may be taken in any combination and with any aspect of the invention. Examples The invention is illustrated by the following non-limiting examples. All parts and percentages are given by weight unless otherwise stated. It will be understood that all tests and physical properties listed have been determined at atmospheric pressure and ambient / room temperature (i.e. about 20-25°C), unless otherwise stated herein, or unless otherwise stated in the referenced test methods and procedures. Test Methods In this specification the following test methods are used: i) Hydroxyl value is defined as the number of mg of potassium hydroxide equivalent to the hydroxyl content of 1 g of sample, and was measured by acetylation followed by hydrolysation of excess acetic anhydride. The acetic acid formed was subsequently titrated with water based potassium hydroxide solution. ii) Acid value was determined by using ASTM D1980-87 (Standard test method for acid value of fatty acids and polymerised fatty acids). iii) Saponification value was measured by using ASTM D5558 (Standard test method for vegetable and animal fats). 2103173-000264 iv) Iodine value was measured by using ASTM D5554 (Standard Test Method for the Determination of Iodine Value of Fats and Oils) v) NMR analysis was conducted using Bruker Ultrashield 400 Plus NMR equipment and TopSpin 3.2 processing software. 1H and 13C NMR spectra (400 MHz) were obtained from the samples in deuterated chloroform at 27 °C. vi) FTIR analysis was conducted using a Nicolet 6700 FT-IR. vii) pH was measured at room temperature (25°C) with Fisher Scientific Accumet AE150 pH Meter. viii) Combing force was measured using a DiaStron MTT175 Miniature Tensile Tester for wet and dry combing and friction. The Diastron MTT175 is an industry standard Miniature Tensile Tester (MTT) which is well known to a person skilled in the art for measuring different properties of hair tresses, including Combing, Volume, Friction, Curl Compression, 3-point bending and Tensile. The combing attachment of the MTT175 allows the work required for combing a hair tress to be measured, in accordance with the wet combing test method described herein. The dry friction test method described herein uses the parallelogram friction test apparatus of the MTT175. ix) Hair preparation Three Medium density European dark brown bleached hair tresses sourced from International Hair Importers and Products (Queen, NY), were cut to 1.0 cm wide to 20 cm long weighing 3g was designated for each hair conditioner Formulation A to J as shown in Table 1. The tresses were washed with standard global shampoo formulation (SLES / CAPB) for 1 minute while allowing the tap water to run down on each tress from top to bottom to avoid tangling. x) Procedure for Wet Combing Force Measurement Each clean hair tress was submerged in a beaker containing 800 mL of deionized water 3 times. Excess water removed from the tress by lightly squeezing the top of the tress between the thumb and forefinger and moving them down the length of the tress. Each squeezed hair tress was then clamped in the Diastron MTT175 instrument with combing accessory with the root end towards the jig. Two finders were used to flatten the hair tress and push / guide it into the comb. The wet combing force of each clean tress was measured 5 times using the DiaStron and the data collected is averaged as the baseline value of three tresses (n=3) 2103173-000264 After acquiring baseline, each same set of 3 hair tresses was treated with one of the hair conditioner formulations described in Table 1 from A to J. The treatment involved applying 0.5 g of the hair conditioner formulation on each tress and allowing 3 minutes of treatment time – working the hair conditioner formulation on each hair tress for 1 minute, and then leaving it on for 2 minutes. Once treated, the hair tresses were rinsed with running tap water for 1 minute and excess water was squeezed out of the hair tresses. The instrumental reading for the three treated tresses were taken and averaged as the treated value of three tresses (n=3). Conditioning / Lubrication is evaluated through a decrease in grooming forces or work for a product-treated hair compared to an unconditioned baseline control. The higher the % force or % work reduction mean the better conditioner. Below two formulas 1 and 2 are used to compare test results. The standard deviation of these results was calculated, and ANOVA general linear model statistical analysis was performed using a Tukey-method to compare HCA Formulation vs Benchmark. The resulting p-values ≤ 0.05 means that the difference between the samples is significant. Formula 1: % Comb Work reduction = 100 * (Av. Baseline Work – Av. Treated Work) / Av. xi) Procedure for Dry Combing Force Measurement In a similar way to the wet combing, three medium density European dark brown bleached hair tresses were cut to 1 cm wide to 20 cm long weighing about 3 g for each hair conditioner formulation B, C, F and J. The tresses were washed with global shampoo (SLES / CAPB shampoo) for 1 minute while allowing the tap water to run down on each tress from top to bottom to avoid tangling. The extra water from the hair tresses were squeezed out and tresses were dried overnight. Next day, the hair tresses were placed into an environmental chamber set at 50+ / - 5% relative humidity for two hours to equilibrate. After two hours, each equilibrated hair tress was combed manually 3-4 times using a wide-and narrow-toother comb until no further tangling was noticed. First using the wide-tooth section and then using the narrow- tooth section. 2103173-000264 Each hair tress was then clamped in the DiaStron MTT combing accessory with the root end towards the jig. Using two fingers the hair tresses were flattened and push / guided into the comb attached to the DiaStron. The baseline dry combing force of each tress was then measured 5 times and the data collected. After completing the baseline dry measurements, each set of 3 hair tresses was wetted with running water and treated with one of the hair conditioner formulations B, C, F and J. The treatment involved applying 0.5 g of the hair conditioner formulation on each tress and allowing 3 minutes of treatment time – working the hair conditioner formulation on each hair tress for 1 minute, and then leaving it on for 2 minutes. Once treated, the hair tresses were rinsed with running tap water for 1 minute and again, the excess water is squeezed out of the hair tresses and dried overnight. Next day, the hair tresses were placed into an environmental chamber set at 50 + / - 5% relative humidity for two hours to equilibrate. Then each equilibrated hair tress was combed manually 1-2 times using a wide-and narrow-toother comb until no further tangling was noticed. The average of each 3-tress dry combing data for each hair conditioner formulation B, C, F and J was taken standard deviation was calculated, and ANOVA general linear model statistical analysis was performed using a Tukey-method to compare HCA Formulation vs Benchmark. The resulting p-values ≤ 0.05 means that the difference between the samples is significant. xii) Procedure for measuring smoothness Three medium density European dark brown bleached hair tresses were cut to 1.5 cm wide to 20 cm long weighing about 4 g for each hair conditioner formulation B, F and J. The tresses were washed with global shampoo (SLES / CAPB shampoo) for 1 minute while allowing the tap water to run down on each tress from top to bottom to avoid tangling. The extra water from the hair tresses were squeezed out and tresses were dried overnight. Next day, the hair tresses were placed into an environmental chamber set at 50 + / - 5% relative humidity for two hours to equilibrate. After two hours, each equilibrated hair tress was combed manually 3-4 times using a wide-and narrow-toother comb until no further tangling was noticed. First using the wide-tooth section and then using the narrow- tooth section. Measurement of friction / smoothness was conducted using the same Diastron MTT175 instrument with a parallelogram attachment with rubber substrate and 400g brass weight being applied to the test probe. 2103173-000264 Each hair tress was then clamped in the MTT friction accessory attaching end of the tresses using two fingers to make sure the hair tresses were flattened. The baseline dry friction force of each tress was measured 5 times and the data collected. After completing the baseline friction measurements, each set of 3 hair tresses was wetted with running water and treated with one of the hair conditioner formulations B F and J. The treatment involved applying 0.7 g of the hair conditioner formulation on each tress and allowing 3 minutes of treatment time – working the hair conditioner formulation on each hair tress for 1 minute, and then leaving it on for 2 minutes. Once treated, the hair tresses were rinsed with running tap water for 1 minute and again, the excess water is squeezed out of the hair and tresses let dry overnight. Next day, the hair tresses were placed into an environmental chamber set at 50 + / - 5% relative humidity for two hours to equilibrate. Then each equilibrated hair tress was combed manually 1-2 times using a wide-and narrow-toother comb until no further tangling was noticed. Each hair tress was then clamped in the MTT friction accessory attaching both ends of the tresses using two fingers to make sure the hair tresses were flattened. The Treatment dry friction force of each tress was then measured 5 times and the data collected. The average of each 3-tress dry friction data for each hair conditioner formulation B, F and J was taken and the results are shown in Table 5. xiii) Hair breakage was measured using a BOSSA NOVA Vision Sirtaki repeated combing instrument from BOSSA NOVA (Los Angeles, CA). The detection and counting of broken hair fibres (in pixels) is done automatically through an imaging system that periodically inspects a collection tray which collects broken fibres. Example 1 One mole of Jojoba Oil is reacted with 1-1.5 moles of Dimethylaminopropylamine (DMAPA) in the presence of hypophosphorous acid and potassium hydroxide. An excess of DMAPA is likely to be used. The reaction takes place at a temperature of approximately 200 ⁰C at a pressure of approximately 280 kPa. The reaction product comprises an amide referred to as Jojoba amidopropyl dimethylamine and free alcohol formed from the Jojoba Alcohols. Some amount of unreacted Jojoba Oil is also likely to be present in the final material. The reaction is concluded when a majority of the Jojoba Oil has been converted to Jojoba amidopropyl dimethylamine and Jojoba Alcohol as determined by measuring saponification value. The reaction is concluded when the saponification value is within the range 0 to 30 2103173-000264 mg KOH / g. Any remaining unreacted DMAPA is removed by heating the mixture to a temperature of about 160°C and applying vacuum. The produced composition shall be referred to as Sample 1, which was used to prepare Formulation B. Sample 1 was analysed by FTIR as described in the Test Methods to confirm the presence of an amide formed from the carboxylic acid component of the jojoba oil (wax ester) and the DMAPA (polyamine). Sample 1 was analysed by NMR as described in the Test Methods to confirm a relative abundance of species in the composition of approximately 45% Jojoba DMAPA, 44% Jojoba alcohols, 10% Jojoba oil. Example 2 One mole of Jojoba Oil is reacted with 1-1.5 mol Dimethylaminopropylamine (DMAPA) in the presence of hypophosphorous acid and potassium hydroxide. An excess of DMAPA is likely to be used. The reaction takes place at a temperature of approximately 200⁰C at a pressure of approximately 280 kPa. The resulting material is a mixture of Jojoba amidopropyl dimethylamine and jojoba alcohols. Any remaining unreacted DMAPA is removed by heating the mixture to a temperature of about 160°C and applying vacuum. The reaction mixture is treated with betaine HCl and hypophosphorous acid at elevated temperatures to produce a mixture of Jojoba amidopropyl dimethylamine and Jojoba Betaine. The reaction is concluded when the hydroxyl value is in the desired range which is between 25 and 50 mg KOH / g. The produced composition shall be referred to as Sample 2, which was used to prepare Formulation C. Example 3 One mole of Jojoba Oil is reacted with 1-1.5 mol of Dimethylaminopropylamine (DMAPA) in the presence of hypophosphorous acid and potassium hydroxide. An excess of DMAPA is likely to be used. The reaction takes place at a temperature of approximately 200⁰C at a pressure of approximately 280 kPa. The resulting material is a mixture of Jojoba amidopropyl dimethylamine and jojoba alcohols. Any remaining unreacted DMAPA is 2103173-000264 removed by achieving a temperature of about 160°C and applying vacuum. The reaction mixture is treated with Proline and hypophosphorous acid at elevated temperatures to produce a mixture of Jojoba amidopropyl dimethylamine and Jojoba Prolinate. The reaction is concluded when the hydroxyl value is in the desired range which is between 25 and 50 mg KOH / g. The produced composition shall be referred to as Sample 3, which was used to prepare Formulation E. Example 4 One mole of Orange Peel Wax is reacted with 1-1.5 moles of Dimethylaminopropylamine (DMAPA) in the presence of hypophosphorous acid and potassium hydroxide. An excess of DMAPA is likely to be used. The reaction takes place at a temperature of approximately 200⁰C at a pressure of approximately 280 kPa. The resulting material comprises an amide referred to as Orange amidopropyl dimethylamine and free alcohols formed from the Orange Peel Wax during the reaction. Some amount of unreacted Orange Peel Wax is also likely to be present in the final material. The reaction is concluded when the Orange Wax has been converted to Orange amidopropyl dimethylamine and Orange Alcohol as determined by saponification value. The desired saponification value is approximately 0 to 30 mg KOH / g. Any remaining unreacted DMAPA is removed at the end of the batch by achieving a temperature of about 160°C and applying vacuum. The produced composition shall be referred to as Sample 4, which was used to prepare Formulation G. Example 5 One mole of Candelilla Wax is reacted with 1-1.5 moles of Dimethylaminopropylamine (DMAPA) in the presence of hypophosphorous acid and potassium hydroxide. An excess of DMAPA is likely to be used. The reaction takes place at a temperature of approximately 200⁰C at a pressure of approximately 280 kPa. The resulting material is a mixture of an amide referred to as Candelilla amidopropylamine and Candelilla alcohols. Some amount of unreacted Candelilla wax is likely still present in the final material. The reaction is concluded when the Candelilla Wax has been converted to Candelilla amidopropyl dimethylamine and Candelilla Alcohol as determined by saponification value. The desired saponification value is between 0 to 30 mg KOH / g. Any remaining unreacted DMAPA is 2103173-000264 removed at the end of the batch by achieving a temperature of about 160°C and applying vacuum. The produced composition shall be referred to as Sample 5, which was used to prepare Formulation H. Example 6 One mole of Rice Bran Wax is reacted with 1-1.5 moles of Dimethylaminopropylamine (DMAPA) in the presence of hypophosphorous acid and potassium hydroxide. An excess of DMAPA is likely to be used. The reaction takes place at a temperature of approximately 200⁰C at a pressure of approximately 280 kPa. The resulting material is a mixture of Rice bran amidopropyl dimethylamine and Rice Bran alcohols. Some amount of unreacted Rice Bran wax is likely still present in the final material. The reaction is concluded when the Rice Bran Wax has been converted to Rice Bran amidopropyl dimethylamine and Rice Bran alcohol as determined by saponification value. The desired value is approximately 0 to 30 mg KOH / g. Any remaining unreacted DMAPA is removed at the end of the batch by achieving a temperature of about 160°C and applying vacuum. The produced composition shall be referred to as Sample 6, which was used to prepare Formulation I. Example 7 One mole of Jojoba Oil is reacted with 1-1.5 mol of Dimethylaminopropylamine (DMAPA) in the presence of hypophosphorous acid and potassium hydroxide. An excess of DMAPA is likely to be used. The reaction takes place at a temperature of approximately 200⁰C at a pressure of approximately 280 kPa. The resulting material is a mixture of Jojoba amidopropyl dimethylamine and jojoba alcohols. Any remaining unreacted DMAPA is removed achieving a temperature of about 160°C and applying vacuum. The reaction mixture is treated with citric acid and hypophosphorous acid at elevated temperatures to yield a jojoba citrate mixture. The reaction is concluded when the acid value is in the desired range which is between 0 and 50 mg KOH / g. The produced composition shall be referred to as Sample 7, which was used to prepare Formulation J. 2103173-000264 Example 8 - Comparative One mole of Methyldiethanolamine (MDEA) is reacted with 1.2 moles of Jojoba Oil in the presence of hypophosphorous acid and potassium hydroxide. The reaction takes place at a temperature of approximately 180⁰C and atmospheric pressure. The vessel is stirred and a nitrogen sparge is applied. The resulting material is a mixture of an ester of MDEA and free jojoba alcohols. MDEA is a mono-amine and this reaction product is therefore outside the scope of the invention. The reaction is complete when the amount of MDEA present has been sufficiently reduced. Reaction progress is monitored via Thin-Layer Chromatography. The produced composition shall be referred to as Comparative Sample 8 (not according to the invention), which was used to prepare formulation D. Example 9 One mole of Jojoba Oil is reacted with 1-1.5 mol of Dimethylaminopropylamine (DMAPA) in the presence of hypophosphorous acid and potassium hydroxide. An excess of DMAPA is likely to be used. The reaction takes place at a temperature of approximately 200⁰C at a pressure of approximately 280 kPa. The resulting material is a mixture of Jojoba amidopropyl dimethylamine and jojoba alcohols. Any remaining unreacted DMAPA is removed achieving a temperature of about 160°C and applying vacuum. The reaction mixture is treated with itaconic acid and hypophosphorous acid at elevated temperatures to yield a jojoba itaconic mixture. The reaction is concluded when the acid value is in the desired range which is between 0 and 20 mg KOH / g. Example 10 One mole of Jojoba Oil is reacted with 1-1.5 mol of Dimethylaminopropylamine (DMAPA) in the presence of hypophosphorous acid and potassium hydroxide. An excess of DMAPA is likely to be used. The reaction takes place at a temperature of approximately 200⁰C at a pressure of approximately 280 kPa. The resulting material is a mixture of Jojoba amidopropyl dimethylamine and jojoba alcohols. Any remaining unreacted DMAPA is removed achieving a temperature of about 160°C and applying vacuum. The reaction mixture is treated with levulinic acid and hypophosphorous acid at elevated temperatures to yield a jojoba levulinate mixture. The reaction is concluded when the acid value is in the desired range which is between 0 and 20 mg KOH / g. 2103173-000264 Example 11 One mole of Jojoba Oil is reacted with 1-1.5 mol of Dimethylaminopropylamine (DMAPA) in the presence of hypophosphorous acid and potassium hydroxide. An excess of DMAPA is likely to be used. The reaction takes place at a temperature of approximately 200⁰C at a pressure of approximately 280 kPa. The resulting material is a mixture of Jojoba amidopropyl dimethylamine and jojoba alcohols. Any remaining unreacted DMAPA is removed achieving a temperature of about 160°C and applying vacuum. The reaction mixture is treated with succinic acid and hypophosphorous acid at elevated temperatures to yield a dijojoba succinate mixture. The reaction is concluded when the acid value is in the desired range which is between 0 and 20 mg KOH / g. Example 12 One mole of Jojoba Oil is reacted with 1-1.5 mol of Dimethylaminopropylamine (DMAPA) in the presence of hypophosphorous acid and potassium hydroxide. An excess of DMAPA is likely to be used. The reaction takes place at a temperature of approximately 200⁰C at a pressure of approximately 280 kPa. The resulting material is a mixture of Jojoba amidopropyl dimethylamine and jojoba alcohols. Any remaining unreacted DMAPA is removed achieving a temperature of about 160°C and applying vacuum. The reaction mixture is treated with octanoic acid and hypophosphorous acid at elevated temperatures to yield a jojoba octanoate mixture. The reaction is concluded when the acid value is in the desired range which is between 0 and 20 mg KOH / g. Example 13 Samples 1 to 7 and Comparative Sample 8 (Formulation D - Comparative) from Examples 1-8 were tested as hair conditioning agents (HCA) in a hair conditioner formulation against a control formulation (Formulation A - Control) comprising water instead of an HCA and a benchmark formulation (Formulation F - Benchmark) comprising the known HCA Behentrimonium Chloride & Isopropyl Alcohol (BTMC). Formulations A to J were prepared with different hair conditioning agents (HCA) as set out in Table 1. Table 1: Hair conditioning formulations A to J Formulation Hair Conditioning Agent (HCA) A (Control) none 2103173-000264 B Sample 1 C Sample 2 D (Comparative) Comparative Sample 8 E Sample 3 Behentrimonium Chloride & F (Benchmark) Isopropyl Alcohol (BTMC) G Sample 4 H Sample 5 I Sample 6 J Sample 7 As shown in Table 2, each hair conditioner formulation (A to J) was prepared by combining the Part A ingredients while mixing and heating to 75-80°C, and separately combining the Part B ingredients and heating to the same temperature. The Part A and Part B ingredients were then combined at temperature and allowed to cool to 40°C. Once at 40°C, the part C ingredients were added and the pH adjusted to about 4.5 using citric acid if needed. Table 2: Composition of hair conditioning formulations A to J Ingredients / INCI Functionality Formulation A Formulations Control B-J wt% wt% Part A Water Deionized (Aqua) Solvent 87 83-86 Glycerine Humectant 3 3.0 Part B Samples 1-8 or BTMCHair Conditioning0 1-4 Agent (HCA) Cetearyl Alcohol Thickener 6.9 6.0 Glyceryl Stearate Emulsifier 1.0 1.0 Polysorbate 60 Emulsifier 2.0 2.0 Part C 2103173-000264 Phenoxyethanol (and) Preservative 0.9 0.9 Ethylhexylglycerin Part D 25% Citric Acid solution pH adjuster Qs Qs A wet combing test was carried out according to the procedure described herein in the Test Methods and the results are shown in Table 3. Table 3: Wet combing test results Wet Combing Results % Change of Combing % Change of Total Work Formulations Force Done A -14 + / - 10 -21 + / - 21 Control B (Sample 1) -93 + / - 1 -93 + / - 2 C (Sample 2) -88 + / - 4 -93 + / - 2 D -35 + / - 6 -78 + / - 7 (Comparative Sample 8) E (Sample 3) -94 + / - 1 -93 + / - 2 F -95 + / - 1 -94 + / - 2 Benchmark G (Sample 4) -75 + / - 2 -84 + / - 10 H (Sample 5) -93 + / - 1 -92 + / - 4 I (Sample 6) -91 + / - 2 -90 + / - 5 J (Sample 7) -89 + / - 9 -93 + / - 3 Table 3 shows that all formulations B to J which include an HCA show a conditioning effect by improving wet combing performance with regard to Control formulation A. It can also be seen that formulations according to the invention (B, C, E, G, H, I and J) have a wet combing performance which is higher than that of Comparative formulation D and which is comparable to the performance of Benchmark formulation F. A dry combing test was carried out according to the procedure described herein in the Test Methods and the results are shown in Table 4. 2103173-000264 Table 4: Dry Combing test results Dry Combing Results % Change of Combing % Change of Total Work Formulations Force or Peak Load Done B -78 + / -7 -65 + / - 9 C -67 + / -5 -50 + / - 7 F -76 + / -11 -62+ / - 4 Benchmark J -83 + / -14 -71 + / - 14 Table 4 shows that formulations B, C, and J which include an HCA show a conditioning effect by dry combing performance which is comparable to the performance of Benchmark formulation F. A smoothness test was carried out according to the procedure described herein in the Test Methods and the results are shown in Table 5. Table 5: Smoothness results Formulations % Change in Horizontal Force B -23 + / - 8 F -15 + / - 1 Benchmark J -27 + / - 6 Table 5 shows that Formulations B and J outperform the benchmark (Formulation F). Sensorial evaluation of conditioners Hair preparation - Bleached Caucasian hair was purchased from International Hair Importers & Products Inc. (NY) and a total of 40 tresses (4 for each panellist) were cut to 1.5cm wide by 20 cm long. The tresses were washed with a simple cleansing shampoo (SLES / CAPB) using a 1:10 w / w shampoo to hair ratio for 1 minute. The tresses were then rinsed with warm water for 1 minute. The respective formulation was then applied to the 2103173-000264 hair at a 2.5:10 w / w formulation to hair ratio and massaged into the hair tresses for 1 minute. Each tress was worked from top to bottom with thumb and fingers to avoid tangling. The treated tresses were left to sit for 2 minutes and then the formulations rinsed out of the hair for 30 seconds under running warm water and gently squeeze excess water. Panel evaluation- A total of 10 panellists were involved in wet and dry evaluation of hair tresses. Initially each panellist evaluated the “wet detangling” attribute of four wet tresses treated with conditioner “B, C, F and J” formulations. The wet detangling was done with the wide tooth comb. Then the same panellist evaluated the “wet combing” attribute of the same tresses with a tighter comb, tresses were ranked on a scale of 1 (difficult) to 5 (easy). After wet evaluation, all evaluated hair tresses were air dried overnight, and the dry evaluations were completed the following day. Panellists evaluated the “dry detangling” attribute of four dry tresses treated with conditioner “B, C, F and J” formulations. The dry detangling was done with the wide tooth comb. Then the same panellist evaluated the “dry combing” attribute of the same tresses with a tighter comb, tresses were ranked on a scale of 1 (difficult) to 5 (easy). The results are shown in Tables 6-9 below. Table 6: Wet Detangling Benchmark Panellist Formulation B Formulation C Formulation J Formulation F 1 5 5 5 5 2 5 3 5 4 3 5 3 5 5 4 4 1 5 3 5 5 2 4 4 6 5 4 5 5 7 5 4 4 5 8 5 4 4 5 9 5 5 5 5 10 5 5 5 5 2103173-000264 TOTAL 49 36 47 46 Results: Conditioner formulation B and J were found to match the performance of benchmark formulation F. Conditioner formulation C showed a reduction in performance when compared to Benchmark. Table 7: Wet Combing Benchmark Panellist Formulation B Formulation C Formulation J Formulation F 1 5 4 5 5 2 5 2 4 3 3 5 3 5 4 4 4 2 5 3 5 5 2 4 4 6 5 3 4 5 7 5 3 4 4 8 5 4 3 5 9 5 4 4 4 10 4 3 3 3 TOTAL 48 30 41 40 Results: Formulation B was found to outperform the benchmark formulation F. Formulation J was found to perform similar to the benchmark formulation F. Conditioner formulation C showed reduced performance compared to Benchmark. Table 8: Dry Detangling Benchmark Panellist Formulation B Formulation C Formulation J Formulation F 1 5 5 5 5 2 5 5 5 4 3 4 5 5 4 4 4 4 5 3 2103173-000264 5 5 5 5 5 6 4 4 4 3 7 5 5 5 5 8 5 4 5 4 9 5 4 4 5 10 5 5 4 4 TOTAL 47 46 47 42 Results: Panellist identified conditioner formulations B, J and C were better than the benchmark formulation F. Table 9: Dry Combing Benchmark Panellist Formulation B Formulation C Formulation J Formulation F 1 5 5 5 4 2 5 4 5 4 3 5 4 5 3 4 4 3 5 4 5 5 4 5 4 6 3 3 3 3 7 4 5 5 4 8 5 4 5 4 9 4 4 5 5 10 4 4 4 3 TOTAL 44 40 47 38 Results: Panelists determined that Formulations B and J were better than the benchmark formulation F and formulation C. In addition, panellists were also asked if they have any additional comments or observations and overwhelmingly replied that hair treated with formulations B, J and C had no static fly-a-ways whereas hair treated with the benchmark formulation F had fly-a-ways. Hair Breakage by Repeated Combing 2103173-000264 Bleached Caucasian hair was purchased from International Hair Importers & Products Inc. (NY) and a total of 16 tresses (4 for each formulation) were cut to 1.5cm wide by 20 cm long. The tresses were washed with a simple cleansing shampoo (SLES / CAPB) using a 1:10 w / w shampoo to hair ratio for 1 minute. The tresses were then rinsed with warm water for 1 minute. The respective formulation was then applied to the hair at a 2.5:10 w / w formulation to hair ratio and massaged into the hair tresses for 1 minute. Each tress was worked from top to bottom with thumb and fingers to avoid tangling. The treated tresses were left to sit for 2 minutes and then the formulations rinsed out of the hair for 30 seconds under running warm water and allowed to air-dry overnight. The following repeated combing test procedure was carried out for hair conditioner formulations B, J, F and C. A negative control using unconditioned hair which cleansed with simple cleansing shampoo SLES / CAPB was used. Treated hair tresses were mounted onto the instrument which is housed in an environmental chamber and allowed to reach equilibrium for 2 hours at a relativity humidity of 60% and at room temperature. The hair breakage was detected with automated imaging after 10,000 combing cycles. The images were analyzed by the Sirtaki software to determine cumulative hair breakage for each treated tress. The results are given in Tables 10 to 12. Table 10: Hair Breakage Average Broken Average Broken Average Broken Treatment Fibers (pixels) (1,000 Fibers (pixels) (5,000 Fibers (pixels) (10,000 cycles) cycles) cycles) Formulation C 1194 2126 3283 Formulation J 1008 4712 11265 Formulation B 417 1450 3875 Formulation F Benchmark526 2113 2930Unconditioned Hair11748 33155 44202Hair breakage analyzed for each treatment was compared against unconditioned hair anddifference was calculated as follows:%  ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^  ൌ   ^^௩^. ^^^௨^ ்^^^௧^^^௧^ ି ^^௩^. ^^^௨^ ^^^^^ௗ^௧^^^^ௗ ு^^^^^^௩^. ^^^௨^ ^^^^^ௗ^௧^^^^ௗ ு^^^^ x 100%Table 11: Comparison with unconditioned hair 2103173-000264 % Difference in % Difference in % Difference in Broken Fibers vs. Broken Fibers vs. Broken Fibers vs. Treatment Unconditioned Unconditioned Unconditioned Hair Hair Hair (1,000 cycles) (5,000 cycles) (10,000 cycles) Formulation C 89.8% 93.6% 92.6% Formulation J 91.4% 85.8% 74.5% Formulation B 96.5% 95.6% 91.2% Formulation F Benchmark95.5% 93.6% 93.4%Table 12: Statistical comparison of hair breakage vs. unconditioned hair was performed with ANOVA analysis at 95% confidence level. P-value vs. P-value vs. P-value vs. Treatment Unconditioned Unconditioned Unconditioned Hair Hair Hair (1,000 cycles) (5,000 cycles) (10,000 cycles) Formulation C 0.008 <0.001 <0.001 Formulation J 0.007 0.001 0.001 Formulation B 0.005 <0.001 <0.001 Formulation F <0.001 <0.001 <0.001 The results of the repeated combing test shown in Tables 10 to 12 demonstrate that bleached Caucasian hair treated with formulations B, C, and J show lower cumulative hair breakage when compared to unconditioned hair. Respective differences were statistically significant (p<0.05) at 95% confidence level. Example 14 The following formulations are provided to show different ways in which the Hair Conditioning Agents (HCAs) of Examples 1 to 12 may be used in various personal care formulations. 1) Rebalancing Hair Mask Ingredients wt% Phase A Hair Conditioning Agent (HCA) 2.0 Cropure Shea Butter (Butyrospermum ParkII (Shea Butter)) 1.0 Alcohol No.20-B (Hydrogenated Rapeseed Alcohol) 6.0 2103173-000264 Brij S100 (Steareth-100) 1.8 Brij CS12 (Cetosteareth-12) 2.2 SR Crodamol DNEO (Diisononyl Isoeicosanedioate) 3.0 KF-8005 (Aminoethyl Aminopropyl Dimethicone) 2.0 Phase B Deionised Water Q.S. to 100.0 IPGS (Isopentyldiol) 5.0 Sorbitol Kao (Sorbitol, Water) 7.0 Phase C Viscaress™HPD (Polyquaternium-37, Hydrogenated Polydecene,Trideceth-6, Aqua) 1.0 Phase D Crodarom Cider Vinegar EC (Water, Glycerin, Vinegar) 2.0 Phase E Euxyl PE9010 (Phenoxyethanol, Ethylhexylglycerin) 0.3 Fragrance 0.3 Procedure: Heat Phase A and Phase B to 80-85˚C and mix until uniform. Slowly add Phase B to Phase A with mixing for 5 minutes.5 minutes later, cool down to 40˚C. Add Phase C to Phase A with mixing until homogeneous. Add Phase D to Phase A with mixing until uniform. Add Phase E to Phase A with mixing until uniform. Adjust pH to 4.2 ± 0.2 with 50% Lactic Acid solution. 2) Smooth and Hydrated Combing Cream Ingredients wt% Part A Water Deionised Q.S. to 100 Disodium EDTA 0.10 Glycerin 1.00 2103173-000264 Lactic acid (44%) 0.35 Part B SP Crodacol™ CS50 (Cetearyl Alcohol) 5.00 Hair Conditioning Agent (HCA) 1.00 Sensaluxe™ DF (Dioctyldodecyl Dodecanedioate) 1.00 VisCaress HPD (Polyquaternium-37 (and) Hydrogenated Polydecene (and) Trideceth-6 (and) Aqua) 1.00 Shea Butter 0.50 Part C Hydrosativum P SB (Hydrolyzed Pea Protein) 1.00 Euxyl PE9010 (Phenoxyethanol (and) Ethylhexylglycerin) 0.80 Crodarom® Porcelain Flower (Caprylic / Capric Triglyceride, Hoya Lacunosa Flower Extract) 0.50 Procedure: Combine Part A ingredients in a beaker and heat until 75 - 80°C with stirring. Combine and heat the ingredients of Part B separately to 75-80°C. Add Part B into Part A under stirring. Cool to 40°C with mixing and add Part C. 3) Leave-On Hair Serum Ingredients wt% Phase A Hair Conditioning Agent (HCA) 0.50 Crodamol™ DES (Diethoxyethyl Succinate) 1.00 IPG-S (Isopentyldiol) 5.00 Phase B Deionised Water Q.S. to 100.00 Phase C L-Lactic Acid 50 (L-Lactic Acid 50% solution) 0.05 2103173-000264 Phase D Dispersion liquid of Amigum (Sclerotium gum 2.0%, Hydroxypropyl Guar 0.5% in Water) 25.00 Phase E Fragrance 0.30 Ethanol (Alcohol) 5.00 Procedure: Mix Phase A and stir slowly. Heat up to 70-80 ˚C with mixing until homogeneous. Heat Phase B to 70-80˚C and mix until homogeneous. Add Phase B to Phase A with stirring by three blade mixer. Add Phase C to Phase A with stirring by three blade mixer. Five minutes later, add Phase D to Phase A with stirring by three blade mixer. Five minutes later cool with mixing to 40˚C. Add Phase E to Phase A with mix until homogeneous. 4) So Simple Conditioner Ingredients wt% Part A Water Deionised 93.20 Lactic acid (85%) 0.15 Part B Hair Conditioning Agent (HCA) 1.00 SP Crodacol CS50 (Cetearyl Alcohol) 5.00 Part C Euxyl PE 9010 (Phenoxyethanol / Ethylhexylglycerin) 0.50 Fragrance 0.15 2103173-000264 Procedure: Heat Part A to 75-80°C. Heat Part B separately to 75-80° C. Combine Part B to Part A and hold at temperature until uniform. Cool to 40°C and add Part C. If necessary, adjust pH between 4.0-4.5 using lactic acid. 5) Sulfate-free Color Retention Combing Cream Ingredients wt% Part A Water Deionised Q.S. to 100 Glycerin 2.00 Lactic Acid 0.15 Part B Hair Conditioning Agent (HCA) 1.50 Crodamol SS (Cetyl Esters) 1.50 Cetearyl Alcohol 5.00 Astrocaryum Murumuru seed butter 2.00 Part C Iodopropynyl Butylcarbamate 0.10 Tocopherol 0.10 Phenoxyethanol 0.70 Procedure: Heat Part A and Part B separately to 80-85°C. Add Part B to Part A while stirring. When temperature is below 35°C add Part C. Adjust pH to 4.0-5.0. 6) Nourishing and Smoothing Hair Mask Ingredients wt% Part A Water Deionised Q.S. to 100 2103173-000264 Arlasilk PLN (Linoleamidopropyl PG-Dimonium Chloride Phosphate Dimethicone (and) Aqua) 2.50 Lactic Acid (85%) 0.48 Part B Hair Conditioning Agent (HCA) 3.00 Crodabond™ CSA (Hydrogenated Castor Oil / Sebacic Acid Copolymer) 1.00 Arlasense V5 (PPG-3 Isostearyl Methyl Ether) 2.00 Crodacol™ CS50 (Cetearyl Alcohol) 6.50 Crodafos™ CES (Cetearyl Alcohol (and) Dicetyl Phosphate (and) Ceteth-10 Phosphate) 2.00 Brij™ S10 (Steareth-10) 1.50 Crodamol SS (Cetyl Esters) 1.00 Cropure Avocado (Persea Gratissima (Avocado) Oil) 0.25 Part C Keravis NSP ET (Aqua (and) Hydrolyzed Vegetable Protein PG-Propyl Silantriol) 1.00 Crodarom Black Quinoa (Aqua (and) Glycerin (and) Chenopodium Quinoa Seed Extract) 0.50 Euxyl PE-9010 (Phenoxyethanol (and) Ethylhexylglycerin) 0.50 Fragrance 0.30 Procedure: Heat and mix Part A to 75-80ºC and Part B to 75-80ºC separately. Add Part B to Part A and mix until emulsified. Cool to 40ºC. Adjust mixing speed to minimize aeration. Add Part C below 40ºC with mixing. If necessary, adjust pH between 4.0-4.5 using lactic acid. 7) Hydrating Leave-In Hair Conditioner Ingredients wt% Part A 2103173-000264 Water Deionised Q.S. to 100 Lactic Acid (85%) 0.05 Glycerin 1.50 Part B Hair Conditioning Agent (HCA) 0.50 Brij™S10 (Steareth-10) 1.00 SP Crodacol™ CS50 (Cetearyl Alcohol) 3.50 Crodamol STS (PPG-3 Benzyl Ether Myristate) 1.15 Part C Hydrosativum P SB (Hydrolyzed Pea Protein) 0.50 Crodarom Délice Extreme (Water, Glycerin, Carya Illinoensis (Pecan) Seed Extract, Acer Saccharum (Sugar Maple) Extract) 0.10 Euxyl PE 9010 (Phenoxyethanol / Ethylhexylglycerin) 0.75 Fragrance 0.35 Procedure: Heat Part A to 75-80°C. Heat Part B separately to 75-80° C. Combine Part B to Part A with medium speed mixing and hold at temperature until uniform. Cool to 40°C and add Part C. If necessary, adjust pH between 4.0-4.5 using lactic acid. 8) Conditioning Hair Oil Ingredients wt % Coconut Oil 98.00 Hair Conditioning Agent (HCA) 2.00 Neutralizing agent (Optional) Procedure: Heat Coconut oil to 50 to 60 °C until molten. Combine conditioning active and stir until homogeneous. Pour into desired container and allow to cool. Neutralize if desired. 2103173-000264 9) Anti-Frizz Hair Styling Curl Cream Ingredients wt% Part A Water Deionised Q.S. to 100 Lactic Acid (50%) Q.S. to pH 4.5-5 Glycerin 1.50 Part B Shea Butter (Butyrospermum parkii butter) 2.50 Hair Conditioning Agent (HCA) 2.00 Glyceryl Stearate 1.50 SP Crodacol™ CS50 (Cetearyl Alcohol) 4.50 PEG-40 Hydrogenated Castor Oil 0.75 Part C Mirustyle MFP (Hydroxypropyltrimonium Hydrolyzed Corn Starch) 2.00 Tocopherol 0.10 Euxyl PE 9010 (Phenoxyethanol / Ethylhexylglycerin) 1.00 Fragrance 0.30 Procedure: Combine Part A ingredients and heat Part A to 75-80°C. Combine and heat Part B ingredients separately to 75-80° C. Combine Part B to Part A with medium speed mixing and hold at temperature until uniform. Cool to 40°C then add Part C ingredients individually. If necessary, further adjust to the desired pH between using lactic acid solution. 10) Sulfate Free Conditioning Shampoo Ingredients wt% DI water Qs to 100 Crodasinic LS30 30.0 Crodateric CAB 30 20.0 2103173-000264 Versathix 4.0 Hair Conditioning Agent (HCA) 1.5 Euxyl PE9010 1.0 Sodium Chloride 2.7 Procedure: Add water, Crodasinic LS30 and Crodateric CAB 30 to main beaker. Heat to 50C. Add Versathix and mix for 15 min. Cool down the mixture to 30-40C while adding Hair Conditioning Agent (HCA) and Euxyl PE9010 one at a time allowing each to fully disperse. Adjust pH to 6-6.5 with citric acid solution. Adjust viscosity with sodium chloride. It is to be understood that the invention is not to be limited to the details of the above embodiments, which are described by way of example only. Many variations are possible.

Claims

2103173-000264 Claims:

1. A composition comprising the reaction product of: a) a wax ester selected from jojoba oil, candelilla wax, rice bran wax, orange peel wax and mixtures thereof, wherein the wax ester is formed from a carboxylic acid component and an alcohol component; and b) a polyamine selected from diamines, triamines and tetramines, wherein the composition comprises: i) an amide formed from the reaction of the carboxylic acid component of the wax ester and the polyamine; and ii) free alcohol formed from the alcohol component of the wax ester.

2. A composition according to claim 1 which has at least one of: I) a saponification value from 0.1 to 50 mg KOH / g; and / or II) a hydroxyl value from 0.1 to 100 mg KOH / g.

3. A composition comprising the reaction product of: a) a wax ester selected from jojoba oil, candelilla wax, rice bran wax, orange peel wax and mixtures thereof; and b) a polyamine selected from diamines, triamines and tetramines; wherein the wax ester is formed from a carboxylic acid component and an alcohol component and wherein the alcohol component of the wax ester is further reacted with: c) an acid selected from trimethylglycine, citric acid, amino acids, dicarboxylic acids and monocarboxylic acids; wherein the composition comprises: i) an amide formed from the carboxylic acid component of the wax ester and the polyamine; and ii) an ester formed from the alcohol component of the wax ester and the acid selected from trimethylglycine, citric acid, amino acids, dicarboxylic acids and monocarboxylic acids.

4. A composition according to claim 3 which has at least one of: I) a saponification value from 0.1 to 100 mg KOH / g; and / or II) a hydroxyl value from 0.1 to 100 mg KOH / g; and / or III) an acid value from 0.1 to 50 mg KOH / g.2103173-000264 5. A composition according to claim 3 or 4, wherein the composition further comprises free alcohol formed from the alcohol component of the wax ester.

6. A composition according to any preceding claim, wherein the composition further comprises an amount of the wax ester which is unreacted.

7. A composition according to any preceding claim wherein the polyamine comprises at least one primary amine group.

8. A composition according to any preceding claim wherein the polyamine does not comprise a quaternary amine group.

9. A composition according to any preceding claim wherein the polyamine comprises at least one group selected from: secondary amine groups and tertiary amine groups.

10. A composition according to any preceding claim wherein the polyamine is dimethylaminopropylamine (DMAPA).

11. A composition according to any preceding claim wherein the wax ester is jojoba oil.

12. A composition according to any preceding claim wherein the reactants a) & b) are used at a molar ratio of one mole of wax ester to 0.5 to 3 moles of polyamine.

13. A personal care formulation comprising a composition according to any preceding claim and a personal care ingredient.

14. A personal care formulation according to claim 13 wherein the personal care ingredient is selected from a hair cleaning agent, hair conditioning agent, hair styling agent, anti-dandruff agent, hair growth promoter, perfume, sunscreen, sunblock, pigment, moisturizer, film former, hair color, make-up agent, thickening agent, emulsifier, humectant, emollient, antiseptic agent, deodorant active, dermatologically acceptable carrier, surfactant, abrasive, absorbent, fragrance, colorant, essential oil, astringent, anti-acne agent, anti-caking agent, anti-foaming agent, anti-oxidant, binder, enzyme, enzyme inhibitor, enzyme activator, coenzyme, botanical extract, ceramide, buffering agent, bulking2103173-000264 agent, chelating agent, cosmetic biocide, external analgesic, substantivity increasing agent, opacifying agent, pH adjuster, reducing agent, sequestrant, skin bleaching and / or lightening agent, skin conditioning agent, skin soothing and / or healing agent, skin treating agent, vitamin or preservative.

15. A hair care formulation comprising a composition according to any of claims 1 to 12 and a hair care ingredient, wherein the hair care formulation is for topical application to hair.

16. A hair care formulation according to claim 15 wherein the hair care ingredient is selected from hair cleaning agents, hair conditioning agents, hair styling agents, anti- dandruff agents, hair growth promoters, shine enhancers, moisturisers, herbal additives, hair strengtheners, vitamin additives, colorants, hair thickening agents; setting and styling agents; ultraviolet absorbers; silicone oils; essential oils and fragrances; thickening or viscosity-enhancing agents; stabilising agents; emollients; chelating agents; sequestering agents; preservatives; disinfectants; anti-oxidants / radical scavengers; antistatic agents; detangling agents; emulsifying or dispersing agents.

17. A method of treating hair comprising the steps of: i) applying to the hair a composition according to any of claims 1 to 12; and ii) optionally, rinsing the composition off the hair.

18. A method according to claim 17 wherein the method comprises one or more steps selected from bleaching, colouring, straightening, perming, curling, relaxing, fixing, holding, shaping, styling, thermal treatment, cleaning or conditioning of the hair.

19. Use of a composition according to any of claims 1 to 12 for the conditioning of hair.

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