Liquid dispersion comprising a mixture of xanthan gum and GUAR gum, method of making and use thereof

Abstract

A liquid dispersion that may be used in liquid cleansing compositions is disclosed. The liquid dispersion and cleansing composition may comprise a mixture of xanthan gum, guar gum, glycerin, a glutamate surfactant, and water. The glutamate surfactant may comprise a combination of a glutamate surfactant and at least one other surfactant. Methods of manufacturing the liquid dispersion; method of manufacturing the liquid cleansing compositions containing the liquid dispersion; and methods of using the cleansing compositions that contain the liquid dispersion are also disclosed.

Description

[0001]526449-000008 TITLE LIQUID DISPERSION COMPRISING A MIXTURE OF XANTHAN GUM AND GUAR GUM, METHOD OF MAKING AND USE THEREOF FIELD The present invention relates to liquid dispersions, in particular liquid dispersions which can be used to prepare liquid cleaning compositions for cleaning skin or hair. The invention further relates to methods of manufacturing and using liquid cleaning compositions. BACKGROUND Cleansing products, such as soaps and shampoos, are used to clean skin and hair. Cleansers are surfactant-based materials that can be applied to the skin or hair to remove dirt and greasy residues from the external layers of the skin or hair, for achieving and maintaining good hygiene. Often cleansers are used in conjunction with water by first wetting the skin or hair, applying the cleanser, then rinsing with water, for example in a shower or bath. This makes liquid formats convenient for many users. Consumers expect cleansing products to satisfy a range of requirements, such as cleansing action, foaming volume, stability, flowability, dermatological compatibility, appearance, sensory impression, stability in storage and ease of use. The cleansing action is provided by surfactants, the primary active component of cleaning products. Surfactants activate surfaces to trap and remove dirt from the surfaces. At the same time, surfactants lower the dynamic surface tension of the liquid-air interface to allow gas bubbles to be formed beneath the surface of the liquid. Further, surfactants stabilize foam once it is formed. However, as is recognized in the art, surfactants can be irritating to the skin and eyes. As concentrations of such surfactants increase in cleansing products to impart increased cleansing and foaming properties, the irritation associated with such cleansing products also tends to increase, ultimately making them undesirable for use on the skin and / or hair. 1 DMS_US.369715079.1 526449-000008 Cleansing products can be designed to be mild for skin and hair by either adding mild surfactants and / or diluting the amount of surfactant in the cleansing products while still maintaining adequate cleansing and conditioning efficacy. Further, cleansing products usually require the use of thickeners to build viscosity in the cleansers for desired sensory feel. However, use of thickeners may turn cleansers hazy or creamy, even unstable and less flowable, and can present a challenge in manufacturing process. Manufacturing processes for cleansers are known, including batch processes and continuous processes. Using a continuous process can increase efficiency over batch processing by minimizing time spent emptying and cleaning vessels between batches, however a continuous process may require special design for example when liquid components must flow at a particular rate and / or be pumped. Thus, the need remains for cleansing products that are mild, stable, have adequate cleansing efficacy and flowability, and that could optionally be manufactured in a continuous process. The present inventors have discovered, surprisingly, that the use of particular a surfactant system, particular thickening agents and a selection of sustainable ingredients, made it possible to obtain mild cleansing products with a quick foam generation, an acceptable rheological profile (thickness, flowability), while still providing suitable cleansing and conditioning benefit to the skin or hair of a user. Further, the cleansing products could be prepared in a continuous process with the addition of liquid ingredients or liquid premixes such as liquid dispersion. SUMMARY OF THE INVENTION One aspect of the invention pertains to a liquid dispersion comprising a mixture of: xanthan gum, guar gum, glycerin, a glutamate surfactant, and water; wherein xanthan gum is present in an amount from 2% to 4.5%, and guar gum is present in an amount from 4% to 9%, expressed in weight % of the total weight of the liquid dispersion. In one or more embodiments, the liquid dispersion comprises glycerin present in an amount from 23% to 44%. In some embodiments, the liquid dispersion comprises glutamate surfactant present in an amount from 26% to 42%. In one or more embodiments the liquid dispersion 2 DMS_US.369715079.1 526449-000008 comprises water present in an amount from 17% to 28%. In one or more embodiments the liquid dispersion comprises a ratio of water to glutamate surfactant from 1:1 to 1:2. In some embodiments the liquid dispersion comprises a ratio of xanthan gum to guar gum from 1:1 to 1:3. In a particular embodiment the liquid dispersion comprises: 3.5% to 3.7% of xanthan gum, 7% to 7.2% of guar gum, 35.6% to 35.8% of glycerin, 32% to 32.2% of a glutamate surfactant, and 21.3% to 21.5% of water, expressed in weight % of the total weight of the liquid dispersion. Another aspect of the invention pertains to a liquid cleansing composition comprising a liquid dispersion as disclosed above and at least one other surfactant, wherein a combination of the glutamate surfactant and the at least one other surfactant represents from 10% to 20%, in weight% of the liquid cleansing composition, and the glutamate surfactant represents from 20% to 50%, in weight% of the surfactant combination, and guar gum and xanthan gum combined represent from 0.2% to 1%, in weight% of the liquid cleansing composition. In one or more embodiments of the liquid cleansing composition the glutamate surfactant is a cocoyl glutamate surfactant. In some embodiments of the liquid cleansing composition the at least one other surfactant is a non-ionic surfactant. In one or more embodiments the liquid cleansing composition further comprises a conditioning agent. In one or more embodiments the liquid cleansing composition further comprises an opacifier. In some embodiments the liquid cleansing composition is substantially free from glyceryl esters. In some embodiment the liquid cleansing composition comprises glycerin in an amount from 0.1% to 6%. In a particular embodiment the liquid cleansing composition comprises a mixture of 0.15% to 0.3% of xanthan gum, 0.3% to 0.6% of guar gum, 2% to 2.5% of glycerin, 15% to 20% of a surfactant combination, and Water, all expressed in weight % of the total weight of the cleansing composition, and wherein the said surfactant combination comprises from 30% to 38%, in weight % of the surfactant combination, of a glutamate surfactant; and from 62% to 70%, in weight % of the surfactant combination, of Coco Glucoside, Decyl Glucoside, or Coco Glucoside and Decyl Glucoside. 3 DMS_US.369715079.1 526449-000008 Another aspect of the invention pertains to a method for the production of a liquid dispersion comprising the steps of mixing guar gum and glycerin to form a first mixture, adding xanthan gum to the first mixture to form a second mixture, and adding glutamate surfactant and water to the second mixture to form a third mixture, and mixing the third mixture until the liquid dispersion is homogenous. Another aspect of the invention pertains to a method for the production of a liquid cleansing composition according to the invention, comprising the steps of adding a liquid dispersion according to the invention to water at a temperature of about 30°C to 60°C to form a viscous liquid, then mixing at least one non-ionic surfactant to the viscous liquid. Another aspect of the invention pertains to the use of the liquid dispersion as disclosed above for the preparation of a liquid cleansing composition. Another aspect of the invention pertains to the use of the liquid cleansing composition as disclosed above for the treatment of skin or hair. The scope of the present invention will be better understood from the following description. BRIEF DESCRIPTION OF THE FIGURES Figure 1 is a graph showing foam volume for samples 1, 2 and 3 which are samples prepared in accordance with the invention, and a comparative sample. Squares (□) represent the values for the comparative sample. Circles (○) represent the values for sample 1. Diamonds (◊) represent the values for sample 2. Triangles (Δ) represent the values for sample 3. Vertical axis represents the foam volume measured in milliliters (ml). Horizontal axis represents the number of cycles performed in the foam generation test. Figure 2 is a graph showing rate of foam volume decay for samples 1, 2 and 3 which are samples prepared in accordance with the invention, and a comparative sample. 4 DMS_US.369715079.1 526449-000008 Squares (□) represent the values for the comparative sample. Circles (○) represent the values for sample 1. Diamonds (◊) represent the values for sample 2. Triangles (Δ) represent the values for sample 3. Vertical axis represents a variation in foam volume (foam decay). Variation in foam volume (in ml) is measured between two time points and then divided by the volume at the initial time point: first time point is a reference at the beginning of the period considered (t0) and second time point is after a determined amount of time (tx). Foam decay value is calculated as follows: Foam decay at tx= (V(t0)-V(tx)) / V(t0); wherein V(tx) represents the volume of foam (in ml) at the time point tx, and V(t0) represents the volume of foam (in ml) at the initial time point t0. Cleanser foam disintegrates over time as it returns to a liquid, so the variation in foam volume observed is a decrease. Horizontal axis represents time points.0 is the starting point. Point 1 corresponds to values measured 15 seconds after the starting point, point 2 corresponds to values measured 20 seconds after the starting point, and so forth with a 5 second difference between every further time point. The value indicated for time point 5 is the foam decay measured 35 seconds after the starting point. DETAILED DESCRIPTION The terms used in this specification generally have their ordinary meanings in the art within the context of this disclosure and in specific context where each term is used. Certain terms are discussed below, or elsewhere in the specification, to provide additional guidance in describing the compositions and methods of the disclosure and how to make and use them. As used herein, the terms “about” or “approximately” mean within an acceptable error range for the particular value as determined by one of ordinary skill in the art, which will depend in part on how the value is measured or determined (i.e., the limitations of the measurement system). For example, “about” can mean within three or more standard deviations per 5 DMS_US.369715079.1 526449-000008 practice in the art. Alternatively, “about” can mean a range of up to 5%, up to 3%, up to 1%, or up to 0.5% of a given value. As used herein, the term “cleansing composition” (or alternatively “cleanser”) refers to a flowable composition that is useful in cleansing dirt and / or oil from the skin or hair of the user. The cleansing composition is intended to be applied to the skin and / or hair of the user for a limited period of time and then removed by way of rinsing, for example with water, or wiping with a disposable or reusable cloth or other tool. Although cleansers according to the invention are optimized for use on human skin and / or hair and described as such, the present invention may be used to clean other animals for example dogs or cats. All percentages of components herein are in weight percentage. In some aspects, the percentage is the weight percent of the liquid dispersion or the liquid cleansing composition, and in some aspects, the weight percentage is of the particular system being described. For example, the liquid cleansing composition desirably includes a surfactant combination, which is a blend of a plurality of surfactants. Amounts of these surfactants may be described as being the weight percentage of the liquid cleansing composition or alternatively the weight percentage of the surfactant combination, as noted in the description. If a component of the liquid dispersion is described herein as being present in a particular weight percent with no further identifier, it is intended that the weight percent is with respect to the liquid dispersion. Alternatively, if a component of the liquid cleansing composition is described herein as being present in a particular weight percent with no further identifier, it is intended that the weight percent is with respect to the liquid cleansing composition. As used herein, “essentially free” or “substantially free” of an ingredient means containing less than 0.1 weight percent, or less than 0.01 weight percent, or none of an ingredient. The present invention offers a mild liquid cleansing composition with a quick foam generation, an acceptable rheological profile (thickness, flowability), and a selection of sustainable ingredients, while still providing suitable cleansing and conditioning benefit to the skin or hair of a user. In addition, the liquid cleansing composition can be manufactured in a continuous 6 DMS_US.369715079.1 526449-000008 process relying solely on liquid ingredients or liquid premixes such as liquid dispersion. This is due to the fact that the liquid dispersion (or premix) containing thickening agents is stable, and with a viscosity low enough to be pumpable in a continuous process, while still providing an acceptable final viscosity for the liquid cleansing composition. As used herein, “stable” liquid dispersion means that after at least 2 weeks at room temperature, no granule formation or solid deposition was visually observed in the liquid dispersion. The liquid cleansing composition desirably is mild to the skin and eyes. Mildness is defined herein as the ability of a product to be applied to the skin or hair of a user with a low or negligible level of irritation. Skin and / or eye mildness of the composition of the invention may be determined using one or more of tests such as EpiDerm™ Skin Model (MatTek Corporation, Ashland, MA), Viability Assay, IL-1α Immunoassay, and EpiOcular™ Human Cell Construct Kit (MatTek Corporation, Ashland, MA) described in WO2018 / 204752. Viscosity of liquid cleaning compositions and liquid dispersions may be measured with a RV3 spindle at 20 rpm, 60 seconds. Determinations of zero-shear apparent viscosity of the liquid compositions and dispersions were conducted on a controlled-stress rheometer (AR-2000™, TA Instruments Ltd., New Castle, Del., USA). Steady-state shear stress sweeps were performed at 25.0±0.1° C using a cone-plate geometry (RV3 spindle). Data acquisition and analysis were performed with the Rheology Advantage software v4.1.10 (TA Instruments Ltd., New Castle, Del., USA). Zero-shear apparent viscosities for Newtonian fluids are reported as the average of viscosity values obtained over a range of shear stresses (0.02-1.0 Pa). For pseudoplastic (shear-thinning) fluids, zero-shear apparent viscosities were calculated via the fitting of shear stress sweep data to an Ellis viscosity model. Except otherwise stated, viscosities are given in centiPoise (cps). In some aspects, the liquid dispersion of the present invention may have a viscosity ranging from 1000 cps to 5000 cps, preferably from 2000 cps to 4000 cps, more preferably from 3000 cps to 4000 cps at 25°C. 7 DMS_US.369715079.1 526449-000008 Liquid dispersion One embodiment of the invention relates to a liquid dispersion comprising a mixture of: - xanthan gum, - guar gum, - glycerin, - a glutamate surfactant, and - water, wherein xanthan gum is present in an amount from 2% to 4.5%, and guar gum is present in an amount from 4% to 9%, expressed in weight % of the total weight of the liquid dispersion. The liquid dispersion according to the present invention does not require heating to remain fluid, it is spontaneously fluid at room temperatures such as from 10°C to 30°C, or from 15°C to 25°C. It is desirable to maintain the pH of the liquid dispersion between 9 – 10, in order to avoid any risk of microbiological contamination. In a preferred embodiment the liquid dispersion is not an emulsion. In one or more embodiments of the liquid dispersion, glycerin may be present in an amount from 23% to 44%, preferably from 30% to 40%, or preferably from 32% to 38%, preferably from 35% to 36%, preferably from 35.6% to 35.8%, expressed in weight % of the total weight of the liquid dispersion. Preferably the ratio of glycerin to guar gum and xanthan gum combined, may be from 10: 1 to 10: 5, preferably from 10: 2 to 10: 4, preferably about 10: 3. A ratio of 10: 3 would mean that the weight % of glycerin is 10 / 3 higher than the weight % of guar gum and xanthan gum combined, expressed in weight % of the total weight of the liquid dispersion. In one or more embodiments of the liquid dispersion, glutamate surfactant may be present in an amount from 26% to 42%, preferably from 30% to 35%, preferably from 31% to 33%, or 8 DMS_US.369715079.1 526449-000008 preferably from 32% to 32.2%; expressed in weight % of the total weight of the liquid dispersion. Preferably the glutamate surfactant may be a cocoyl glutamate, even more preferably disodium or sodium cocoyl glutamate. In one or more embodiments of the liquid dispersion, water may be present in an amount from 17% to 28%, preferably from 20% to 25%, preferably from 21% to 22%, or preferred 21.3% to 21.5%; expressed in weight % of the total weight of the liquid dispersion. The skilled person will appreciate the amount of water in the liquid dispersion is selected to achieve the desired viscosity. The dispersion should not be too viscous to be pumpable during manufacture. While an increase in the amount of water may lead to a decrease in viscosity, the diluted liquid dispersion may create a gel structure which again would not be pumpable. In one or more embodiments of the liquid dispersion, the ratio of water to glutamate surfactant may be from 1:1 to 1:2, preferably from 1:1.3 to 1:1.7, preferably from 1:1.4 to 1:1.6, preferably about 1:1.5. The liquid dispersion may comprise water and glutamate surfactant as a preformulated aqueous glutamate surfactant mixture. Such an aqueous glutamate surfactant mixture may comprise from 33% to 50% of water, or from 37% to 43.5% of water, or from 38.5% to 41.5% of water, preferably about 40% of water, expressed in weight % of the total weight of the aqueous glutamate surfactant mixture. In one or more embodiments of the liquid dispersion, the ratio of xanthan gum to guar gum may be from 1:1 to 1:3, preferably 1:1.5 to 1:2.5, preferably about 1:2. The liquid dispersion may comprise a combination of viscosity agents comprising xanthan gum and guar gum. Such a combination of viscosity agent may comprise from 25% to 50% of xanthan gum, from 29% to 40% of xanthan gum, preferably about 33% of xanthan gum, expressed in weight % of the total weight of the combination of viscosity agent. Alternatively, such a combination of viscosity agents may comprise from 50% to 75% of guar gum, from 60% to 71% of guar gum, preferably about 66% of guar gum, expressed in weight % of the total weight of the combination of viscosity agent. 9 DMS_US.369715079.1 526449-000008 The above variations may be combined any suitable way. For example, in a preferred embodiment of the invention, the liquid dispersion may comprise: from 3.5% to 3.7% of xanthan gum, from 7% to 7.2%of guar gum, from 35.6% to 35.8% of glycerin, from 32% to 32.2% of a glutamate surfactant, and from 21.3% to 21.5% of water. Liquid cleansing composition Another embodiment of the invention relates to a liquid cleansing composition comprising a mixture of: - xanthan gum, - guar gum, - glycerin, - a surfactant combination comprising a glutamate surfactant and at least one other surfactant, and - water, wherein the surfactant combination represents from 10% to 20%, in weight% of the liquid cleansing composition, and the glutamate surfactant represents from 20% to 50%, in weight% of the surfactant combination, and the sum of guar gum and xanthan gum represents from 0.2% to 1%, in weight% of the cleansing composition. Another embodiment of the invention relates to a liquid cleansing composition comprising a liquid dispersion according to the present invention, and at least one other surfactant, wherein 10 DMS_US.369715079.1 526449-000008 a combination of the glutamate surfactant and the at least one other surfactant represents from 10% to 20%, in weight% of the liquid cleansing composition, and the glutamate surfactant represents from 20% to 50%, in weight% of the surfactant combination, and guar gum and xanthan gum combined represent from 0.2% to 1%, in weight% of the liquid cleansing composition. The “surfactant combination” means the sum of the glutamate surfactant and the at least one other surfactant. Surfactant combination may represent from 12% to 19%, preferably from 14% to 18%, preferably about 16%, expressed in weight % of the total weight of the total liquid cleansing composition. Glutamate surfactant may represent from 25% to 45%, preferably from 28% to 43%, or preferably from 31% to 38%, in weight% of the total surfactant combination. Guar gum and xanthan gum combined weight % may represent from 0.4% to 0.9%, preferably from 0.5% to 0.8%, or preferably from 0.6% to 0.75%, in weight% of the total cleansing composition. Preferably the liquid cleansing composition according to the present invention may not be an emulsion. The liquid cleansing composition should have a particular viscosity to allow for flowability and usability when dispensed from a dispenser and applied onto the skin and / or hair of a user. In some aspects, the composition of the present invention may have a viscosity ranging from 1000 cps to 5000 cps, preferably from 2000 cps to 4000 cps, preferably from about 3000 cps to about 4000 cps. The liquid cleansing composition should have a particular foam generation speed, or flash foam value. It is highly desirable for the consumer that a cleanser formulation quickly provides 11 DMS_US.369715079.1 526449-000008 foam when applied to wet skin or hairs. The liquid cleansing composition should have a foam generation of at least 50 ml of foam at the third cycle of a foam generation test as described below. On the other hand is also desirable that the liquid cleansing composition does not foam too much as an excess of foam may be inconvenient for the user. The liquid cleansing composition should have a foam generation not exceeding 550 ml of foam after 10 cycles of a foam test as described below Once the foam is generated it is important that it remains stable long enough while the consumer is using the cleanser. Foam will spontaneously decay or disintegrate to return to a liquid state. This characteristic may be evaluated using a foam decay test as described below. Foam decay measures a variation in foam volume between two time points, a reference at the beginning of the period considered and another time point after a determined amount of time. Foam decay is expressed as a foam volume variation compared to the volume at the initial time point. A low value (close to 0) means that the foam is stable, a high value (close to 1) represents an unstable foam, rapidly turning to a liquid. If the value remains the same or increases slowly over time, it means that the foam is stable or disintegrate slowly. The liquid cleansing composition should have a foam decay not exceeding 0.4, preferably 0.37, or preferably 0.36, over a 35 second period. The foam decay variation from 15 seconds to 35 seconds should remain below 0.1, preferably below 0.08. In other words, at least 60%, preferably 63%, or preferably 64% of the initial foam should still be present 35 seconds of measurement; and less than 10% or preferably less than 8% of foam should decay between 15 seconds to 35 seconds after start of the measurement. In one or more embodiment of the liquid cleansing composition the glutamate surfactant is a cocoyl glutamate surfactant, preferably a disodium or sodium cocoyl glutamate. In one or more embodiment of the liquid cleansing composition the at least one other surfactant may be anionic, amphoteric, non-ionic or cationic surfactants. In a preferred embodiment the at least one other surfactant is a non-ionic surfactant. 12 DMS_US.369715079.1 526449-000008 Said at least one other surfactant may be selected from the list comprising: ethoxylates such as ethoxylated fatty alcohol, ethoxylated fatty acid, ethoxylated alkylphenol, ethoxylated amines, ethoxylated fatty acid amides, poloxamers, or fatty acid esters of polyhydroxy compounds such as fatty acid esters of glycerol, fatty acid esters of sorbitol, fatty acid esters of sucrose, or alkyl polyglucosides, and mixtures thereof. In a preferred embodiment said at least one other surfactant may be coco glucoside, decyl glucoside, or coco glucoside and decyl glucoside. As discussed above, the desired composition may include one or more conditioning agents, such that the system is useful for cleansing and conditioning purposes. Glycerin is a component of the liquid cleansing composition and may be included in an amount of from 0.1% to 6% by weight of the cleansing composition, or from 0.5% to 5.0%, or from about 2% to about 3% by weight of the cleansing composition. In some aspects, a conditioning system providing a creamy feel may be desired, and in these embodiments, it may be desirable to include smooth conditioning agents such as hydroxypropyl guar and / or hydroxypropyltrimonium chloride, where the smooth conditioning agent is present in an amount from 0% (if no smooth conditioning agent is used) or from 0.1% to 1.0% by weight of the cleansing composition, or from about0.15% to about0.5% by weight of the cleansing composition. In one or more embodiment the liquid cleansing composition may further comprise a conditioning agent. The conditioning agent may be present in an amount from 0.05% to 3%, preferably from 0.1% to 3%, preferably from 0.1% to 2%, in weight% of the total liquid cleansing composition. The addition of an opacifying agent may be helpful to provide a milky and / or creamy look to the composition. Opacifying / pearlescent agents may include such additives as oils (for example jojoba oil, sunflower seed oil) glycol distearate, ethylene glycol distearate, glycol monostearate, styrene / acrylates copolymer, stearic acid and its salts and alkanolamides higher fatty acids. In one or more embodiment the liquid cleansing composition may further an opacifier. The opacifier may be present in an amount from 0.05% to 3%, preferably from 0.1% to 3%, preferably from 0.5% to 2%, in weight% of the total liquid cleansing composition. 13 DMS_US.369715079.1 526449-000008 In one or more embodiment the liquid cleansing composition may be substantially free from glyceryl esters. Glyceryl Esters are generally not water soluble and it has been observed by the inventors that they may have an impact on the stability of the liquid cleansing composition. Glyceryl Esters may as well have an impact on the clarity of the cleansing composition which can be undesirable if a clear cleansing composition is sought. In one or more embodiment of the liquid cleansing composition, the xanthan gum to guar gum ratio may be from 1:1 to 1:3, preferably 1:1.5 to 1:2.5, preferably about 1:2. The liquid cleansing composition may comprise a combination of viscosity agents comprising xanthan gum and guar gum. Such a combination of viscosity agent may comprise from 25% to 50% of xanthan gum, from 29% to 40% of xanthan gum, preferably about 33% of xanthan gum, expressed in weight % of the total weight of the combination of viscosity agent. Alternatively, such a combination of viscosity agents may comprise from 50% to 75% of guar gum, from 60% to 71% of guar gum, preferably about 66% of guar gum, expressed in weight % of the total weight of the combination of viscosity agent. The liquid cleansing composition desirably is slightly acidic. To achieve this result, it may be desired to include one or more pH adjusters. Acids may be included in the liquid cleansing composition, including, for example, citric acid. Other useful acidic components include, for example, lactic acid, glycolic acid, and salicylic acid. pH adjusters may be included in any desired amount to achieve the desired pH level, including for example, from 0.1% to 2.0% by weight% of the total cleansing composition, or from about 1% to about 1.5% by weight% of the total cleansing composition. In some aspects, more pH adjuster may be needed, while in others, less of a pH adjuster may be required. It may be possible that no pH adjuster is required, although it is useful to incorporate a pH adjuster to achieve the specifically desired level of acidity. Preservatives may be included to provide shelf life and longevity of the liquid cleansing composition. By way of example, preservative systems may include, for example, sodium benzoate, benzoic acid, sorbic acid and its salts, dehydroacetic acid and its salts, 14 DMS_US.369715079.1 526449-000008 phenoxyethanol, caprylyl glycol, chlorphenesin, and ethylhexylglycerin. The preservative system may be included in any desired amount, such as from about 0.1% to about 1.5% by weight% of the total cleansing composition, or about 1% by weight% of the total cleansing composition. Some liquid cleansing compositions may include optional components such as fragrances, colorants, and other aesthetic components. If used, fragrances and colorants may be present in a combined amount of from about 0.01% to about 6% by weight% of the total cleansing composition. The above variations may be combined any suitable way. For example, in a preferred embodiment of the invention, the liquid cleansing composition may comprise: from 0.15% to 0.3% of xanthan gum, from 0.3% to 0.6% of guar gum, from 2% to 2.5% of glycerin, from 15% to 20% of a surfactant combination, and water, expressed in weight % of the total weight of the cleansing composition, and wherein the surfactant combination comprises from 30% to 38%, in weight % of the surfactant combination, of a glutamate surfactant, and from 62% to 70%, in weight % of the surfactant combination, of coco glucoside, decyl glucoside, or coco glucoside and decyl glucoside. Package The liquid cleansing composition described in this application may be stored in any type of package desired, including, for example, pump-style packages, squeeze bottles or tubes, and the like. It may be desired that the package be transparent or translucent, such that the clarity of the composition may be viewed by a user at the time of purchase. 15 DMS_US.369715079.1 526449-000008 Method of production Another embodiment of the invention relates to a method for the production of a liquid dispersion as described above, comprising the following steps: - mixing guar gum and glycerin to form a first mixture, - adding xanthan gum to the first mixture to form a second mixture, and - adding glutamate surfactant and water to the second mixture to form a third mixture, and - mixing the third mixture until the liquid dispersion is homogenous. Preferably the mixing steps may be performed with the components provided at a temperature from 10°C to 40°C, preferably 15°C to 35°C. In yet another embodiment the invention relates to a method for the production of a liquid cleansing composition as disclosed above, comprising the following steps: - adding a liquid dispersion according to the present invention to water at a temperature of about 30°C to 60°C to form a viscous liquid, - mixing at least one non-ionic surfactant to the viscous liquid. In a particular embodiment the method for the production of a liquid cleansing composition may comprise an additional step of adding fragrances and extracts to the liquid after the viscous liquid with a non-ionic surfactant has cooled to room temperature. In one or more embodiment only a portion of the glutamate surfactant present in the liquid cleansing composition may be introduced through the liquid dispersion, the rest of the glutamate surfactant may be introduced after the liquid dispersion is added to a water solution to form a viscous liquid, but before at least one non-ionic surfactant is added to the viscous liquid. The method for the production of a liquid cleansing composition may then comprise the following steps: - adding a liquid dispersion according to the present invention to a water solution heated between 30°C to 60°C, to form a viscous liquid, 16 DMS_US.369715079.1 526449-000008 - adding an additional portion of glutamate surfactant to the viscous liquid, - adding to the viscous liquid at least one non-ionic surfactant. In one embodiment, all of the glutamate surfactant may be present in the liquid dispersion, and no additional portion of the glutamate surfactant is added to the viscous liquid before the at least one non-ionic surfactant. In another embodiment, half of the glutamate surfactant may be present in the liquid dispersion, and the remaining half is added to the viscous liquid before the at least one non- ionic surfactant. In a preferred embodiment more than half (> 50%) of the glutamate surfactant may be present in the liquid dispersion and the remaining portion ( < 50%) is added to the viscous liquid before the at least one non-ionic surfactant. In a particular embodiment, from 60% to 80% (wt% of the total weight of the glutamate surfactant present in the liquid cleansing composition), may be present in the liquid dispersion, and the remaining 20% to 40% portion is added to the viscous liquid before the at least one non-ionic surfactant. Methods of Use In some embodiments, the liquid dispersion according to the present invention may be used for the preparation of a liquid cleansing composition. In a particular embodiment the liquid dispersion is a premix used for the preparation of a liquid cleansing composition according to the invention. In a particular embodiment the liquid dispersion is used in a continuous process for the preparation of a liquid cleansing composition according to the invention. In another particular embodiment the liquid dispersion is a premix used in a continuous process for the preparation of a liquid cleansing composition according to the invention. 17 DMS_US.369715079.1 526449-000008 In one or more embodiment, the liquid cleansing composition according to the present invention may be used for the treatment of skin or hair. The liquid cleansing composition according to the present invention may be used for cosmetic treatment of skin or hair, for example cleaning or maintaining skin or hair. The liquid cleansing composition may be applied to the skin or hair of a user in any desired fashion. In some aspects, the liquid cleansing composition may be applied directly by hand , or a device such as a washcloth, sponge or other apparatus may be used to apply product. The liquid cleansing composition is desirably applied to wet hair or skin so as to aid in the application. The liquid cleansing composition may be left to sit on the applied area for a desired level of time, such as from about 5 seconds to about 5 minutes, and then rinsed with water to remove from the applied area. While the foregoing description represent exemplary embodiments of the present invention, it will be understood that various additions, modifications and substitutions may be made therein without departing from the spirit and scope of the present invention. In particular, it will be clear to those skilled in the art that the present invention may be embodied in other specific forms, structures, arrangements, proportions, and with other elements, materials, and components, without departing from the spirit or essential characteristics thereof. One skilled in the art will appreciate that the invention may be used with many modifications of structure, arrangement, proportions, materials, and components and otherwise, used in the practice of the invention, which are particularly adapted to specific environments and operative requirements without departing from the principles of the present invention. The presently disclosed embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims, and not limited to the foregoing description. 18 DMS_US.369715079.1 526449-000008 EXAMPLES Materials Aloe Vera Powder (Conditioning): Terra-PureTMSpray dried Aloe vera from TERRY LABORATORIES - MELBOURNE FL. Glycerin (Humectant): CremerGLYC refined glycerin 99.5% from Glencore Magdeburg GmbH. Sodium Cocoyl Glutamate (Surfactant): Plantapon ACG 35 from BASF GmbH (note that Plantapon comprises 40 wt% of water), or Hostapon CCG from Clariant Ltd (monosodium salt approx.30% in aqueous solution). Coco-Glucoside (Surfactant): Plantacare 818 UP from BASF GmbH. Coco-Glucoside (and) Glyceryl Oleate (Conditioning): Lamesoft PO 65 from BASF GmbH. Coco-Glucoside (and) Hydrogenated Castor Oil (Conditioning) : Lamesoft Balance from BASF GmbH. Citric Acid 50% solution (pH Adjuster) from SM-Citribel nv Tienen Belgium. Xanthan Gum (Thickener) : Rheocare XGN from BASF GmbH. Cyamopsis Tetragonoloba (Guar) Gum (Thickener): Jaguar Nat from Solvay Oleyl Erucate (Conditioning) : Cetiol J 600 from BASF GmbH. Sodium Benzoate (Preservative): RonaCare Sodium Benzoate from Emerald Performance Materials LLC. Decyl Glucoside (Surfactant) : Plantacare 2000 NUP from BASF GmbH. Carrageenan (Thickener): GENUVISCO Carrageenan CG 131 from CP Kelco US Inc. Process according to the invention Step 1: In the main vessel add water minus 12 wt% of the water and heat up to 40°C. Begin mixing at 100 – 200rpm. Mix 12 wt% of water with Aloe Vera Powder in another vessel until the mix is homogeneous. Add the aloe powder water mix to the main vessel. Step 2 (liquid dispersion): In a separate vessel, mix glycerin and guar gum. Mix in xanthan gum. Add 4 wt% of an aqueous glutamate surfactant mixture (Sodium Cocoyl Glutamate 60 wt% 19 DMS_US.369715079.1 526449-000008 and water 40 wt%, in wt% of the aqueous glutamate surfactant mixture) and mix until the liquid dispersion is homogenous. The liquid dispersion may be set aside until batch reaches 40°C. Once the contents of the main vessel reach 40°C, add the liquid dispersion to the main vessel. Increase mixing speed to 200-300 rpm; ensure no air is being introduced due to mixing. Mix until it forms a gel with no clumps, minimum 10 minutes. Use a spatula to increase agitation along edges of vessel if necessary. Step 3: Add the following ingredients in order, allowing time for complete dissolution between additions. Mixing speed may be increased as viscosity increases; ensure no air is being introduced due to mixing. Use a spatula to increase agitation along edges of vessel if necessary. Add the remaining 2 wt% of aqueous glutamate surfactant mixture (Sodium Cocoyl Glutamate 60 wt% and water 40 wt%) to the main vessel Add Sunflower Oil; mix for a minimum of 5 minutes; make sure the oil is completely incorporated; pause mixing to check for the formation of a thin layer on the surface which indicates that the oil is not yet completely incorporated. Add the Citric Acid Solution. Add Sodium Benzoate. Add Coco-Glucoside (and) Glyceryl Oleate; mix for a minimum of 10 minutes. Add Decyl Glucoside. Step 4: Once the mixture is homogenous start decreasing the temperature to room temperature. Add the pH adjuster and optional fragrances, opacifier and extracts once the batch has reached a temperature of about 30°C. Comparative sample process Step 1: In the main vessel mix 12 wt% of water with Aloe Vera Powder until mix is homogeneous. 20 DMS_US.369715079.1 526449-000008 Step 2: Heat up to 45-50°C and add 20 wt% of water, Sodium Benzoate and glycerin, then add Carrageenan and 16 wt% water, stir until the mix is homogeneous. Add the xanthan gum and the remaining water, stir until the mix is homogeneous. Step 3: Cool down to 40 - 45°C and add Coco-Glucoside and Sodium Cocoyl Glutamate, stir until the mix is homogeneous. Step 4: Once the mixture is homogenous start decreasing the temperature to room temperature. Add the pH adjuster and optional fragrances, opacifier and extracts once the batch has reached a temperature of about 30°C. EXAMPLE 1 – Liquid cleansing compositions Samples 1 to 6 detailed in Table 1 were prepared following the “process according to the invention” disclosed above. Comparative sample was prepared according to the “Comparative Sample Process” disclosed above. Conditioning agents are selected among: Aloe Vera, Coco-Glucoside (and) Glyceryl Oleate, Coco-Glucoside (and) Hydrogenated Castor Oil, Oleyl Erucate, or combination thereof. Opacifier are selected among : Refined Jojoba Oil, Sunflower Seed Oil or combinations thereof. Compar ative Sample Sample Sample Sample Sample Sample Sample 1 2 3 4 5 6 %w / w %w / w %w / w %w / w %w / w %w / w %w / w QS to QS to QS to QS to QS to QS to QS to Water 100 100 100 100 100 100 100 Glycerin 2,00 2,00 2,00 2,00 2,00 2,20 2,50 21 DMS_US.369715079.1 526449-000008 Sodium Cocoyl 10,00 6,00 5,00 6,00 6,00 6,00 6,00 Glutamate Coco-Glucoside 5,00 0,00 7,00 0,00 0,00 0,00 0,00 Decyl Glucoside 0,00 10,00 4,00 10,00 10,00 10,00 10,00 Xanthan Gum 0,70 0,20 0,20 0,20 0,20 0,22 0,25 Guar Gum - 0,40 0,40 0,40 0,40 0,44 0,50 Carrageenan 0,20 - - - - - - Conditioning agents 0,06 1,56 1,06 1,06 1,56 0,00 2,00 Citric Acid 1,00 1,40 1,40 1,40 1,40 1,40 1,40 Opacifier 2,00 0,50 0,50 2,00 0,00 0,00 2,00 Sodium Benzoate 1,00 1,00 1,00 1,00 1,00 1,00 1,00 Table 1: Formulation of liquid cleansing compositions; comparative and according to the invention (samples 1 to 6). EXAMPLE 2 - Foam generation and Rate of foam decay tests. The samples 1, 2 and 3, and the comparative sample were subjected to a foam generation test (or foam test) to determine their foaming ability. Their rate of foam decay was also measured. The tests were performed on a SITA Foam tester (SITA FoamLab). The instrumental foam test method used to quantitatively compare Example formulations was the “SITA Foam Test” which was performed as follows: foam was generated and measured through the use of a SITA Foam Tester R-2000 (sold by SITA Messtechnik GmbH). The SITA Foam Test protocol consists of two phases, both of which are temperature controlled at 30 ± 2 °C. The first phase involves “Foam Generation” during which 0.25 gram of test product in 250 mL of moderately hard water (100 ppm CaCl2) are subjected to ten cycles of 3 second propeller pulses at 1500 RPM with Foam Volume measurements taken after each pulse (measurements take 10 or less seconds). Foam volume measurements are repeated 3 times and the average is calculated. 22 DMS_US.369715079.1 526449-000008 After the foam from the tenth pulse is measured, the “Foam Decay” phase begins for assessing foam stability. “Foam Decay” involves Foam Volume measurements every 5 seconds for at least 1 minute. The SITA Foam Test measures incremental Foam Volume during the Foam Generation phase, measures the Peak Foam Volume, and measures incremental Foam Volume during Foam Decay phase. The results of the foam test are shown in Table 2 below. Cycle Comparative sample Sample 1 Sample 2 Sample 3 1 0 34 0 11 2 0 69 25 20 3 9 55 73 87 4 110 88 52 86 5 132 191 144 84 6 198 177 232 292 7 323 399 419 386 8 396 480 480 433 9 460 471 504 440 10 460 502 524 395 Table 2 : Average foam volumes (mL) Average foam volumes values are represented in Figure 1. Comparative sample values are represented with a square mark. Sample 1 values are represented with a circle mark. Sample 2 values are represented with a diamond mark. Sample 3 values are represented with a triangle mark. Comparative sample has the slowest speed of foam generation compared to samples 1 to 3, which display preferred foam generation performance. 23 DMS_US.369715079.1 526449-000008 Rate of Foam Decay Foam decay measures the total volume and the residual volume in the measuring vessel. Foam decay is the variation in foam volume (in ml) measured between two time points and then divided by the volume at the initial time point: first time point (t0) is a reference at the beginning of the period considered; second time point is after a determined amount of time (tx). Foam decay value is calculated as follows: Foam decay at tx= (V(t0)-V(tx)) / V(t0); wherein V(tx) represents the volume of foam (in ml) at the time point tx; and V(t0) represents the volume of foam (in ml) at the initial time point t0. Cleanser foam disintegrates over time as it returns to a liquid, so the variation in foam volume observed is a decrease. Time points considered are: first point is at 0 second, which is the beginning of the test and is used as reference (t0); then t1is at 15 seconds after initial time point. Further time points are taken every 5 seconds until 35 seconds after initial time point. Foam decay results are presented in Table 3. For example, the foam decay for sample 1 after 35 seconds is 0.3564272, which means that about 35,6 % of the foam volume that was present at the moment the experience started (t0) as disappeared after 35 seconds. Time Comparative sample Sample 1 Sample 2 Sample 3 0 0 0 0 0 00:00:15 0,29118036 0,3016344 0,2742959 0,2576983 00:00:20 0,312113517 0,3157282 0,3051475 0,2682308 00:00:25 0,334974041 0,3389238 0,321149 0,2902005 00:00:30 0,339557684 0,353448 0,3296231 0,3038256 00:00:35 0,350964117 0,3564272 0,3467515 0,3201207 Table 3 : Rate of Foam Decay Rate of foam decay values are represented in Figure 2. Comparative sample values are represented with a square mark. 24 DMS_US.369715079.1 526449-000008 Sample 1 values are represented with a circle mark. Sample 2 values are represented with a diamond mark. Sample 3 values are represented with a triangle mark. It is preferred that the foam remains stable long enough while the consumer is using the cleanser. All samples 1 to 3 showed an acceptable rate of foam decay at least similar to the comparative sample. Overall samples 1 to 3 showed good foaming properties over the comparative sample, with a quick foam generation and a good foam stability. EXAMPLE 3 - Guar gum and xanthan gum percentages Variation of guar gum and xanthan gum percentages in a formula according to Sample 4 (presented in example 1). Samples composition and results are presented in Table 4. Samples were otherwise prepared using the same process and ingredients. All samples (7 to 11) sizes were the same and used the same equipment to minimize variance. For all samples 7 to 11, xanthan gum and guar gum were dissolved in glycerin prior to addition to the batch. Viscosity was determined by Zero-Shear Viscosity Test: Determinations of zero-shear apparent viscosity of the samples 7 to 11 were conducted on a controlled-stress rheometer (AR-2000™, TA Instruments Ltd., New Castle, Del., USA). Steady-state shear stress sweeps were performed at 25.0±0.1° C using a cone-plate geometry (RV3 spindle). Data acquisition and analysis were performed with the Rheology Advantage software v4.1.10 (TA Instruments Ltd., New Castle, Del., USA). Zero-shear apparent viscosities for Newtonian fluids are reported as the average of viscosity values obtained over a range of shear stresses (0.02-1.0 Pa). For pseudoplastic (shear-thinning) fluids, zero-shear apparent viscosities were calculated via the fitting of shear stress sweep data to an Ellis viscosity model. Except otherwise stated, viscosities are given in centiPoise (cps). 25 DMS_US.369715079.1 526449-000008 Viscosity was tested 24 hours after batching for each sample. Temperature of the sample was adjusted to 25°C with a water bath and the sample was mixed until homogeneous. Spindle was centered in the container (4oz jar). Viscosity was measured with a RV3 spindle fixed to the viscosimeter, at 20 rpm, for 60 second. % of Xanthan Viscosity Clarity Texture gum and Guar gum Sample 7 0.2 % Xanthan 3030 Very slightly Generally (equivalent to 0.4% Guar hazy smooth with sample 4) some clumping Sample 8 0.25 % Xanthan 9660 Very slightly Generally 0.5% Guar hazy smooth with some clumping Sample 9 0.70 % Xanthan 1890 Clear Severe 0% Guar clumping Sample 10 0 % Xanthan 1710 Moderately Very smooth 0.70% Guar hazy Sample 11 0.3 % Xanthan 5260 Very slightly Somewhat 0.3% Guar hazy smooth with moderate clumping Table 4 Preferred target value for viscosity is from about 3000 to about 4000 cps. It is preferable to have a viscosity at 5000cps or below 5000cps, or more preferably at 4000 cps or below 4000 cps, to be pumpable in a continuous manufacturing process. For the purpose of providing a thickener for a liquid dispersion which can be formulated into cleansing liquids in a continuous process, synergy is apparent when adding both gums, with a lower total addition the viscosity is higher than either gum alone. This offers an opportunity to reduce ingredient costs and increase manufacturing efficiency. 26 DMS_US.369715079.1 526449-000008 The synergy is strong, with a 25% increase in the level of both gums the viscosity rose threefold. Guar gum contributes to a smoother texture but increases haziness. Xanthan gum contributes to a clumpier cleansing composition and traps air but does not contribute to haziness. Liquid cleansing compositions according to the invention showed acceptable rheological profile (thickness, flowability). EXAMPLE 4 - Liquid dispersion stability Viscosity and pH variations of liquid dispersions such as disclosed in Step 2 of the process above have been investigated. Viscosity and pH variations were tested over a two month period of time, for liquid dispersions stored at 25°C or 40°C. Two liquid dispersions were tested, Sample 12 and sample 13 (Table 5). Sample 13 corresponds to the liquid dispersion disclosed in step 2 of the process above. The aqueous glutamate surfactant mixture consists of 60% Sodium Cocoyl Glutamate and 40 % water (% in wt% of the aqueous glutamate surfactant mixture). Sample 12 Sample 13 Sodium Cocoyl Glutamate 32.1% 36.4% Water 21.4% 24.2% Glycerin 35.7% 30.3% Xanthan gum 3.6% 3% Guar gum 7.2% 6.1% Table 5 pH variations were as follow (Table 6). t0 means the measure was taken the same day the liquid dispersion was produced. pH Sample 12 Sample 13 25°C 40°C 25°C 40°C 27 DMS_US.369715079.1 526449-000008 t0 10.05 10.05 10.36 10.36 2 weeks 9.62 9.61 9.83 9.84 1 month 9.6 9.62 9.77 9.84 2 months 9.79 9.86 9.82 - Table 6 No significative variation of pH was observed over a two month period. Viscosities variations were as follows (Table 7). Viscosities were measured as disclosed above (Example 3). t0means the measurement was taken the same day the liquid dispersion was produced. Viscosity (cps) Sample 12 Sample 13 25°C 40°C 25°C 40°C t02939 2939 2483 2483 2 weeks 2460 2485 3185 3265 1 month 2300 2600 4135 3975 2 months 2305 4505 4800 - Table 7 The observed viscosities remained within an acceptable range of 2000 cps to 5000 cps. Preferably the viscosities should remain below 4000 cps for at least 2 weeks to allow more flexibility in the industrial production process. The two liquid dispersions tested remained stable for up to 2 months when stored at room temperature (25°C). The two liquid dispersions were also stable for at least 1 month even when placed under unfavorable conditions (40°C). The liquid dispersions according to the invention showed a good storage stability. 28 DMS_US.369715079.1

Claims

526449-000008 CLAIMS Claim 1 Liquid dispersion comprising a mixture of: -xanthan gum,- guar gum,- glycerin,- a glutamate surfactant, and- water,wherein xanthan gum is present in an amount from 2% to 4.5%, and guar gum is present in an amount from 4% to 9%, expressed in weight % of the total weight of the liquid dispersion. Claim 2 Liquid dispersion according to claim 1 wherein glycerin is present in an amount from 23% to 44%, expressed in weight % of the total weight of the liquid dispersion. Claim 3 Liquid dispersion according to claim 1 or claim 2, wherein glutamate surfactant is present in an amount from 26% to 42%, expressed in weight % of the total weight of the liquid dispersion. Claim 4 Liquid dispersion according to any one of claims 1 to 3, wherein water is present in an amount from 17% to 28%, expressed in weight % of the total weight of the liquid dispersion. Claim 5 Liquid dispersion according to any one of claims 1 to 4, wherein a ratio of water to glutamate surfactant is from 1:1 to 1:

2. Claim 6 Liquid dispersion according to any one of claims 1 to 5, wherein a ratio of xanthan gum to guar gum is from 1:1 to 1:

3. 29 DMS_US.369715079.1526449-000008 Claim 7 Liquid dispersion according to any one of claims 1 to 6, comprising: 3.5% to 3.7% of xanthan gum, 7% to 7.2%of guar gum, 35.6% to 35.8% of glycerin, 32% to 32.2% of a glutamate surfactant, and 21.3% to 21.5% of water, expressed in weight % of the total weight of the liquid dispersion. Claim 8 Liquid cleansing composition comprising a liquid dispersion according to any one of claims 1 to 7 and at least one other surfactant, wherein a combination of the glutamate surfactant and the at least one other surfactant represents from 10% to 20%, in weight% of the liquid cleansing composition, and the glutamate surfactant represents from 20% to 50%, in weight% of the surfactant combination, and guar gum and xanthan gum combined represent from 0.2% to 1%, in weight% of the liquid cleansing composition. Claim 9 Liquid cleansing composition according to claim 8, wherein the glutamate surfactant is a cocoyl glutamate surfactant. Claim 10 Liquid cleansing composition according to claim 8 or claim 9, wherein the at least one other surfactant is a non-ionic surfactant. Claim 11 Liquid cleansing composition according to any one of claims 8 to 10, further comprising a conditioning agent. 30 DMS_US.369715079.1526449-000008 Claim 12 Liquid cleansing composition according to any one of claims 8 to 11, further comprising an opacifier. Claim 13 Liquid cleansing composition according to any one of claims 8 to 12, wherein said composition is substantially free from glyceryl esters. Claim 14 Liquid cleansing composition according to any one of claims 8 to 13, wherein glycerin is present in an amount from 0.1% to 6%, expressed in weight % of the total weight of the cleansing composition. Claim 16 Liquid cleansing composition according to any one of claims 8 to 15, comprising a mixture of: - 0.15% to 0.3% of xanthan gum, - 0.3% to 0.6% of guar gum, - 2% to 2.5% of glycerin, - 15% to 20% of a surfactant combination, and - water, expressed in weight % of the total weight of the cleansing composition, and wherein the surfactant combination comprises: - from 30% to 38%, in weight % of the surfactant combination, of a glutamate surfactant; and - from 62% to 70%, in weight % of the surfactant combination, of coco glucoside, decyl glucoside, or coco glucoside and decyl glucoside. Claim 17 Method for the production of a liquid dispersion according to any one of claims 1 to 7, comprising the steps: - mixing guar gum and glycerin to form a first mixture, - adding xanthan gum to the first mixture to form a second mixture, and 31 DMS_US.369715079.1526449-000008 - adding glutamate surfactant and water to the second mixture to form a third mixture, and - mixing the third mixture until the liquid dispersion is homogenous. Claim 18 Method for the production of a liquid cleansing composition according to any one of claims 8 to 16, comprising the steps: - adding a liquid dispersion according to any one of claims 1 to 7 to water at a temperature of about 30°C to 60°C to form a viscous liquid, - mixing at least one non-ionic surfactant to the viscous liquid. Claim 19 Use of the liquid dispersion according to any one of claims 1 to 7, in the preparation of a liquid cleansing composition. Claim 20 Use of the liquid cleansing composition according to any one of claims 8 to 16, for the treatment of skin or hair. 32 DMS_US.369715079.1

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