Zwitterionic rich wash composition

Abstract

The present invention is directed to a zwitterionic rich wash composition. The composition is stable, comprises at least 50.5% by weight zwitterionic surfactant, an isethionate and a co-anionic surfactant. The wash composition surprisingly provides excellent sensory benefits when applied to skin and yields a superior open lather with a consumer desirable foam volume, even 5 when formulated with mild wash surfactants.

Description

[0001] P0001053 COM

[0002] -1-

[0003] ZWITTERIONIC RICH WASH COMPOSITION

[0004] Field of the Invention

[0005] 5 The present invention is directed to a zwitterionic rich wash composition. More particularly, the composition is stable, comprises at least 50.5% by weight zwitterionic surfactant, an isethionate and a co-anionic surfactant. The wash composition surprisingly provides excellent sensory benefits when applied to skin and yields a superior open lather with a consumer desirable foam volume, even when formulated with mild wash surfactants. The wash composition can be formulated substantially free of at least one of a sulfate-based surfactant, paraben, hydantoin, isothiazolinone, phthalate, dye, acrylate-based thickener, soap, dioxane and silicone oil.

[0006] Background of the Invention

[0007] Liquid based cleansing compositions, such as detergents, face washes, shampoos and body

[0008] 15 washes, are common and enjoyed by many consumers. Such compositions typically have water as the predominant ingredient, and they are often sold in plastic bottles, sachets or tubes. The compositions are conventionally formulated to have a viscosity that is customary for consumer use and easy for evacuation from the package they are sold in.

[0009] 20 Liquid-based cleansing compositions can be thick and creamy such as those referred to as lamellar wash compositions. Other liquid-based wash compositions can be thin or of low viscosity with a weak and dry foaming profile like those typically referred to as isotropic wash compositions. Notwithstanding, many consumers desire liquid cleansing products that are on the lighter side, are gentle on the skin but that also delivery a very light yet robust foaming profile. Such a profile is difficult to achieve with conventional isotropic and lamellar wash compositions.

[0010] It is of increasing interest to develop a wash composition that is light, easy to discharge from packaging, mild on skin and that yields an excellent foam volume when using. The present invention is directed to a zwitterionic rich wash composition that comprises at least 50.5% by

[0011] 30 weight zwitterionic surfactant, an isethionate and a co-anionic surfactant. The wash composition surprisingly provides excellent sensory benefits when applied to skin and yields a superior open lather with a consumer desirable foam volume, even when formulated with mild wash surfactants. The wash composition can be formulated substantially free of at least one of a sulfate-based P0001053 COM

[0012] -2- surfactant, paraben, hydantoin, isothiazolinone, phthalate, dye, acrylate-based thickener, soap, dioxane and silicone oil.

[0013] Additional information

[0014] 5 Efforts have been disclosed for making wash compositions. In U.S. Patent No.11 , 382, 847 B2, High polyol wash compositions having surfactant and gelling agent are described.

[0015] Other efforts have been disclosed for making wash compositions. In U.S. Patent Application Publication No. 2023 / 0414468 A1 , a wash composition that does not irritate the eyes and that has anionic surfactant and amphoteric or zwitterionic surfactant or both, and nonionic surfactant, zwitterionic surfactant or both is described.

[0016] Further efforts have been disclosed for making wash compositions. In U.S. Patent Application Publication No. 2023 / 045404 A1 , an isotropic concentrate that is hydratable and suitable to

[0017] 15 transform into an end use wash composition is described.

[0018] Even other efforts have been disclosed for making wash compositions. In U.S. Patent Application Publication No. 2018 / 098923 A1 , personal care compositions substantially free of sulfated surfactants are described.

[0019] Still other efforts have been disclosed for making wash compositions. In U.S. Patent No. 9,861 ,565 B2, cleansing compositions with alkali metal or ammonium alkyl ether sulfate, betaine, fatty acid amide and polyethylene glycol are described.

[0020] 25 None of the additional information describes a wash composition that is zwitterionic surfactant rich, comprises isethionate and a co-anionic surfactant, and that provides excellent lather characteristics as claimed herein. P0001053 COM

[0021] -3-

[0022] Summary of the Invention

[0023] In a first aspect the present invention is directed to a wash composition comprising: a. a zwitterionic surfactant having the formula:

[0024] R-C(R1)2-N+(R1)2C(R1)2COO- X+I,

[0025] 5 R-C(R1)2-N+(R1)2C(R2)2C(R1)2-S(O)3- X+II,

[0026] RCOO-N(R1)-(CR12)Z-N+(R2)2C(R1)2COO- X+III, or

[0027] R-C(R1)2-N+(R1)2C(R1)2C(R3)2C(R1)2-S(O)3- X+IV, or a mixture thereof, where each R is independently a C5to C19 saturated or unsaturated alkyl, each R1is independently a hydrogen or Ci.3alkyl, each R2is independently H or Ci-3alkyl and R3is H, a Ci-3alkyl or OH, X+is a counter ion comprising Na+, K+, NH4+, or a mixture of the same, with the proviso that only one R3is OH and z is an integer from 1 to 4, or from 2 to 4 or 2 to 3 or 3, b. an acyl isethionate; c. a co-anionic surfactant that is not an acyl isethionate;

[0028] 15 d. optionally an amphoteric surfactant, nonionic surfactant, cationic surfactant or a mixture thereof, wherein: i) the wash composition comprises from 4.5 to 13%, and preferably, from 5 to 12% or from 5.5 to 11 % by weight total surfactant based on total weight of the wash composition;

[0029] 20 ii) the total surfactant in the wash composition comprises from 50.5 to 82%, or from 52.5 to 80%, or from 55 to 78%, or from 55 to 76% by weight zwitterionic surfactant and from 18 to 49.5%, or from 22.5 to 47%, or from 25 to 45%, or from 27 to 44% by weight anionic surfactant; and iii) total anionic surfactant in the wash composition is greater than 30 to 96%, or from 31 to 95% or from 31 to 65%, or from 31 to 55%, or from 31 to 50% or from 32 to 48% by weight acyl isethionate, the wash composition having a pH from 5.9 to 8, or from 6 to 7.25, or from 6.1 to 7, or from 6.2 to 6.9 or from 6.2 to 6.8 and with the proviso that if the total anionic surfactant is from 50% or less acyl isethionate, the co-anionic surfactant is acyl glycinate.

[0030] 30

[0031] In a second aspect, the invention is directed to a method for washing a surface like skin or hair with the wash composition of the first aspect of the invention. P0001053 COM

[0032] -4- ln a third aspect, the present invention is directed to the wash composition according to the first aspect of the invention wherein the wash composition further comprises a suspending agent like a fermentation derived cellulose.

[0033] 5 In a fourth aspect, the invention is directed to the use of anionic surfactant and zwitterionic surfactant to produce a high foam volume wash composition with no more than 13% by weight total surfactant.

[0034] In a fifth aspect, the invention is directed to the use of anionic surfactant and zwitterionic surfactant to produce a high foam volume wash composition with no more than 13% by weight total surfactant and with suspending agent.

[0035] All other aspects of the present invention will more readily become apparent from the description and Examples which follow.

[0036] 15

[0037] Skin, as used herein, is meant to include skin on the arms (including underarms), face, back, feet, neck, chest, hands, legs, buttocks and scalp (including hair). Stable means the composition of the invention has initial viscosity (i.e. , viscosity taken within 24 hours of the composition being made) that changes by no more than 15% after being stored for 1 month, and preferably, 2 months

[0038] 20 at 45°C. Stable also means that after being stored at 45°C for one month, and preferably, 2 months, wash compositions consistent with the invention display no malodor, color change, syneresis, or precipitate formation. Open lather with desirable foam is defined to mean having a foam volume of over 500 ml as measured with a Sita Foam Tester R-2000 Measurement Device as further described in the Examples. For the avoidance of doubt, foam means a dispersion of gas or air bubbles in a liquid wash prepared with water at 37°C and surfactant consistent with the invention unless a control or comparative example is described.

[0039] Lamellar, as used herein, means having layers of surfactant arrangement where polar head groups align with water to shield fatty acid acyl chains from the water such that over 85% (or 90

[0040] 30 to 100% or 100%) of the total surfactants in the composition are arranged as micelle plates or layers creating a translucent or opaque composition. In contrast, isotropic means a composition with micelles arranged without directional preference. Transparent means clear and able to see through. Translucent means not opaque, and therefore, permitting light to pass through with P0001053 COM

[0041] -5- diffusion such that objects in sight cannot be seen clearly. The wash composition of the present invention may be in lamellar phase or isotropic but is preferably isotropic. Soap, as used herein, means salt of a fatty acid. Zwitterionic means being dipolar, a surfactant having charged groups of opposite signs where the positive charge is typically an ammonium moiety and the negative

[0042] 5 charge is typically a carboxylate moiety. Amphoteric surfactants change from positive or cationic to negative or anionic as the pH goes from acidic to basic.

[0043] The wash composition of the present invention is one which has a viscosity of at least 5 mPa-s where viscosity is taken at 25°C with a Discovery HR-2 Rheometer using sand blasted plates having a 1000-micron gap and a shear rate of 0.1-1 s-1. The wash composition of this invention is one suitable to be wiped or washed off, and preferably, washed off with water. Such a composition can be a home care cleaning composition (e.g., for tabletops, glass, toilets, dishes, upholstery, or laundry) but is preferably a shampoo, make-up wash, facial wash, hand wash, or personal care and liquid body wash. In an embodiment of the invention, the wash composition

[0044] 15 can have a viscosity from 500 to 225,000 mPa-s, and most preferably, from 2,500 to 180,000 mPa-s (or 3,000 to 125,000 mPa-s or 5,000 to 90,000 mPa-s or 6,000 to 15,000 mPa-s). When used for hand applications, the wash composition of the present invention will preferably have a viscosity that is at least 500 mPa-s and not higher than 7,000 mPa-s.

[0045] 20 The wash composition of this invention may, optionally, comprise medicinal or therapeutic agents, but preferably, is a wash which is for cosmetic and non-therapeutic uses to remove dirt, oil, makeup or the like from surfaces, including skin. In a preferred embodiment, the wash composition is a personal wash composition, and therefore, a liquid face or body wash for use while showering or bathing. The wash composition of the present invention may optionally comprise skin benefit ingredients added thereto such as emollients, vitamins and / or derivatives thereof, resorcinols, retinoic acid precursors, colorants, moisturizers, sunscreens, antibacterial agents, mixtures thereof or the like. Such skin benefit ingredients (or agents) can be water and / or oil soluble. If used, oil soluble skin benefit agents typically make up to 2% (or up to 1.5%) by weight of the wash composition whereby water-soluble skin benefit agents, when optionally used, may make up to

[0046] 30 15% (or up to 10%) by weight of the high zwitterionic wash composition. The wash composition will typically have a pH from 5.9 to 8, or from 6 to 7.25, or from 6.1 to 7, or from 6.2 to 6.9 or from 6.2 to 6.8. P0001053 COM

[0047] -6-

[0048] As used herein, “substantially free of’ as it relates to sulfate-based surfactants (e.g., sodium lauryl sulfate or sodium pareth sulfate) means less than 1.5%, and preferably, less than 1 %, and most preferably, less than 0.5%, even more preferably, less than 0.2% (or less than 0.1%) by weight of the wash composition. In an embodiment of the invention, “substantially free of sulfate-based

[0049] 5 surfactant” includes a zwitterionic rich wash composition with 0.0% (i.e. , none) by weight sulfate- based surfactant. Regarding the non-sulfate-based ingredients (i.e., ingredients, like a hydantoin preservative, that are not sulfate containing like anionic sulfate-based surfactants), substantially free of means less than 0.7% by weight, and preferably, less than 0.4%, and most preferably, less than 0.3%, (or less than 0.22% or less than 0.1% or less than 0.05%) by weight of the wash composition of the invention. As to the non-sulfate-based ingredients, substantially free of also includes 0.0% (i.e., none) by weight of the ingredient in the wash composition of the invention. As to soap (e.g., sodium stearate or sodium oleate), the wash composition of this invention will have less than 2%, and preferably, less than 1 %, and most preferably, less than 0.75% by weight soap, or less than 0.55%, or less than 0.25%, or from 0.001 to 0.24% or 0.0% (no soap) by weight

[0050] 15 soap based on total weight of the zwitterionic rich wash composition. With respect to all ingredients that the wash composition of the present invention may be substantially free of, it is within the scope of the invention to include from 0.001 to 0.045% by weight of such ingredient. In yet another preferred embodiment, the wash composition of the present invention comprises less than 35 ppm, and preferably, less than 25 ppm, and most preferably, less than 15 ppm dioxane

[0051] 20 or less than 2 ppm or less than 1 ppm dioxane or 0.0 ppm dioxane based on total dioxane in the wash composition. In another embodiment, the wash composition of this invention may comprise from 0.00001 to 0.00005% by weight dioxane, like 1 ,4-dioxane.

[0052] The term comprising is meant to encompass the terms consisting essentially of and consisting of. For the avoidance of doubt, and for illustration, the wash composition of this invention comprising zwitterionic surfactant, anionic surfactant and active is meant to include a composition consisting essentially of the same and a composition consisting of the same. All ranges defined herein are meant to include all ranges subsumed therein. Except in the operating comparative examples, or where otherwise explicitly indicated, all numbers in this description indicating amounts or ratios

[0053] 30 of materials or conditions and / or physical properties of materials and / or use are to be understood as modified by the word “about”. The disclosure, as found herein, is to be considered to cover all embodiments as found in the claims as being multiply dependent upon each other irrespective of the fact that claims may be found without multiple dependency or redundancy. P0001053 COM

[0054] -7-

[0055] Detailed description of the Invention

[0056] As to the zwitterionic surfactant, the same may be represented by the formulae: R-C(R1)2-N+(R1)2C(R1)2COO- X+I,

[0057] 5 R-C(R1)2-N+(R1)2C(R2)2C(R1)2-S(O)3- X+II,

[0058] RCOO-N(R1)-(CR12)Z-N+(R2)2C(R1)2COO- X+III, or

[0059] R-C(R1)2-N+(R1)2C(R1)2C(R3)2C(R1)2-S(O)3- X+IV, or a mixture thereof, where each R is independently a C5to C19 saturated or unsaturated alkyl, each R1is independently a hydrogen or Ci-3alkyl, each R2is independently H or Ci-3alkyl and R3is H, a Ci-3alkyl or OH, X+is a counter ion comprising Na+, K+, NH4+, or a mixture of the same, with the proviso that only one R3is OH and z is an integer from 1 to 4, or from 2 to 4 or 2 to 3 or 3.

[0060] In an embodiment of the invention, R may have one or two double bonds (i.e. , sp2hybridized

[0061] 15 bonds) where if two double bonds are present, they may be conjugated, but preferably, are not cumulated.

[0062] Illustrative examples of the zwitterionic surfactants suitable for use include betaines like lauryl betaine, lauryldimethyl betaine, coco betaine, cocamidopropyl betaine, laurylamidopropyl betaine,

[0063] 20 a mixture thereof or the like.

[0064] Still other zwitterionic surfactants suitable for use include lauryl hydroxysultaine, cocamidopropyl hydroxysultaine or mixtures thereof. Even other zwitterionic surfactants that may be used in the zwitterionic rich wash composition include alkyl amidopropyl hydroxysultaines including palmityl, stearyl and / or oleyl amidopropyl hydroxysultaine, and most preferably, palmityl amidopropyl hydroxysultaine. Other zwitterionic surfactants suitable for use include behenyl betaine, capryl / capramidopropyl betaine, stearyl betaine, myristyl hydroxysultaine or a mixture thereof. In an embodiment of the invention, the zwitterionic surfactant used comprises cocamidopropyl betaine, lauryl sulfobetaine, cocodimethyl carboxymethyl betaine, laurylhydroxy sulfobetaine,

[0065] 30 cocoamidopropylhydroxyl sulfobetaine, lauryl hydroxysultaine, a mixture thereof or the like. In still another embodiment, the zwitterionic surfactant used comprises lauryl sulfobetaine, lauryl hydroxysultaine or a mixture thereof. In yet another embodiment, the zwitterionic surfactant used is from 92 to 100% or from 93 to 100% or from 93 to 98% or from 95 to 100% by weight P0001053 COM

[0066] -8- cocamidopropyl hydroxysultaine, cocamidopropyl betaine or a mixture thereof based on total weight of zwitterionic surfactant in the wash composition.

[0067] As noted, the total weight % of surfactant in the surfactant rich wash composition comprises from

[0068] 5 50.5 to 82%, or from 52.5 to 80%, or from 55 to 78%, or from 55 to 76% by weight zwitterionic surfactant.

[0069] Total anionic surfactant in the wash composition is greater than 30 to 96%, or from 31 to 95% or from 31 to 65%, or from 31 to 55%, or from 31 to 50% or from 32 to 48% by weight acyl isethionate. The acyl isethionates used can typically be C6-C2o acyl isethionates. These surfactants (esters) are prepared by a reaction between alkali metal isethionate with mixed aliphatic fatty acids having from 6 to 20 carbon atoms and an iodine value of less than 20. Often at least 75% of the mixed fatty acids have from 12 to 18 carbon atoms and up to 25% can have 6 to 10 carbon atoms. The acyl isethionate suitable for use may be an alkoxylated isethionate such as is described in llardi

[0070] 15 et al., U.S. Pat. No. 5,393,466, entitled "Fatty Acid Esters of Polyalkoxylated isethonic acid”. The isethionate surfactants can include the reaction product of fatty acids esterified with isethionic acid and neutralized with a base like sodium or potassium hydroxide. The acyl isethionate surfactant can have the general formula:

[0071] 20 RC-O(O)-C(X)H-C(Y)H-(OCH2-CH2)W-SO3- M+V, where R is as previously defined, w is an integer from 0 to 4 (1 to 4 for the alkoxylated option), X and Y are each independently hydrogen or an alkyl group having 1 to 4 carbons and M is as previously defined.

[0072] It is also within the scope of the invention, when w is 0, for either the carbon alpha or beta to the sulfonate group to have one C-M alkyl substitution in place of hydrogen, preferably a Ci.3alkyl substitution and most preferably, a methyl group. As described, it is also within the scope of the invention for Rto have a degree of unsaturation and typically no more than 2, and more preferably,

[0073] 30 no more than 1 double bond.

[0074] Illustrative examples of the isethionates suitable for use in the zwitterionic rich wash composition include sodium capryl isethionate, sodium caproylyl isethionate, sodium capryl methyl isethionate, P0001053 COM

[0075] -9- sodium caproylyl methyl isethionate, sodium cocoyl isethionate, sodium cocoyl methyl isethionate, sodium lauroyl isethionate, sodium lauroyl methyl isethionate, potassium lauroyl isethionate, potassium lauroyl methyl isethionate, sodium oleoyl isethionate, sodium oleoyl methyl isethionate, sodium stearoyl isethionate, sodium stearoyl methyl isethionate, sodium myristoyl

[0076] 5 isethionate, sodium myristoyl methyl isethionate, sodium palmitoyl isethionate, sodium palmitoyl methyl isethionate, ammonium cocoyl isethionate, ammonium cocoyl methyl isethionate, or a mixture thereof. In an embodiment of the invention, isethionate selected for use comprises sodium lauroyl isethionate, sodium cocoyl isethionate, or a mixture thereof. In another embodiment, the isethionate selected consists essentially of or consists of sodium lauroyl isethionate, sodium cocoyl isethionate, or a mixture thereof. In an often-desired embodiment the isethionate used is sodium lauroyl isethionate.

[0077] Acyl taurates suitable for use include, for example, those commonly known as sodium methyl lauroyl taurate, potassium methyl lauroyl taurate, sodium methyl myristoyl taurate, potassium

[0078] 15 methyl myristoyl taurate, ammonium methyl myristoyl taurate, sodium methyl cocoyl taurate, potassium methyl cocoyl taurate, ammonium methyl cocoyl taurate, sodium methyl oleoyl taurate, potassium methyl oleoyl taurate, ammonium methyl oleoyl taurate, sodium lauroyl taurate, potassium lauroyl taurate, ammonium myristoyl taurate, sodium cocoyl taurate, potassium oleoyl taurate, mixtures thereof or the like. In an embodiment of the invention, when a taurate is used,

[0079] 20 the taurate selected is sodium methyl lauroyl taurate.

[0080] Acyl glycinates and salts thereof are suitable for optional use as anionics in conjunction with acyl isethionates. Such glycinates include C8to C2o, and preferably, C10 to Ci8and most preferably, C12 to Ci6 or C12 to C14 acyl glycinates. Illustrative and nonlimiting examples of the glycinates that may be included are sodium lauroyl glycinate, sodium myristoyl glycinate, sodium cocoyl glycinate, potassium lauroyl glycinate, sodium myristoyl glycinate, potassium cocoyl glycinate, or a mixture thereof. In an embodiment of the invention, sodium cocoyl glycinate, potassium cocoyl glycinate, or a mixture thereof are often preferred when acyl glycinates are used. In another embodiment, sodium or potassium lauroyl glycinate or both may also be used in the zwitterionic

[0081] 30 rich wash composition of the invention. In even another embodiment of the invention, the acyl portion of the glycinates that may be selected for use is preferably saturated but suitable to be unsaturated with no more than 2 double bonds, including conjugated double bonds. P0001053 COM

[0082] -10-

[0083] Acyl glutamates (and salts thereof) may also optionally be included as additional anionic surfactants in the zwitterionic rich wash composition of the present invention. Glutamates such as Ca to C20, and preferably, C10 to Cis and most preferably, C12 to C16 or C12 to C14 acyl glutamates where the acyl portion is preferably saturated are suitable for optional use. As is the case with

[0084] 5 glycinates, the hydrophobic portion of the glutamates may be unsaturated with no more than 2 double bonds, including conjugated double bonds. Illustrative yet nonlimiting examples of the glutamates that may be used include sodium capryloyl glutamate, sodium lauroyl glutamate, sodium myristoyl glutamate, sodium cocoyl glutamate, sodium stearoyl glutamate, dipotassium capryloyl glutamate, dipotassium undecylenoyl glutamate, disodium capryloyl glutamate, disodium cocoyl glutamate, disodium lauroyl glutamate, disodium stearoyl glutamate, disodium undecylenoyl glutamate, potassium capryloyl glutamate, potassium cocoyl glutamate, potassium lauroyl glutamate, potassium myristoyl glutamate, potassium stearoyl glutamate, potassium undecylenoyl glutamate, sodium olivoyl glutamate, sodium palmitoyl glutamate, sodium undecylenoyl glutamate, disodium cocoyl glutamate, or a mixture thereof. In an embodiment of

[0085] 15 the invention, sodium lauroyl glutamate, sodium cocoyl glutamate, sodium stearoyl glutamate, or a mixture thereof is preferred when glutamates are desired for optional use. In another embodiment, if a glutamate is used, sodium myristoyl and / or sodium cocoyl glutamate may often be desired.

[0086] 20 Other anionic surfactants suitable to be selected for use with acyl isethionate include alkyl sulfates, alkyl sulfonates, alpha-olefin sulfonates, alkyl sulfosuccinates, alkyl ether sulfosuccinates, acyl sarcosinates, or a mixture thereof (including any salts thereof).

[0087] As noted herein, the zwitterionic wash composition is, preferably, substantially free of surfactants that are alkyl sulfates (i.e. , sulfate- based surfactants (e.g., sodium lauryl sulfate) and including those that are alkoxylated (e.g., sodium lauryl ether sulfate). In an embodiment of the invention sulfated surfactants may be used, and preferably, at an amount of less than 1.5% by weight of the zwitterionic rich wash composition. If optionally included, the alkyl sulfates can include C8- C20 alkyl sulfates and / or alkoxylated versions such as sodium lauryl ether sulfate, sodium pareth

[0088] 30 ether sulfate, or a mixture thereof where the ethoxylated portion (EO) is typically on average 1 -3 EO groups. When selected, sodium lauryl sulfate, sodium lauryl ether sulfate sodium pareth sulfate, ammonium lauryl sulfate, or a mixture thereof are illustrative examples that may be included for use. P0001053 COM

[0089] -11-

[0090] As to anionic sulfonates and their salts that may be selected for optional use (in addition to or in lieu of any of the optional anionic surfactants described for use with acyl isethionate), the same can include alkyl sulfonates, alkyl glyceryl ether sulfonates, alkyl alpha olefin sulfonates

[0091] 5 (hydrocarbons being an alkene, CxH2x, with a double bond in the alpha position), or a mixture thereof. Typically, the alkyl portion is from C8-C24, and preferably, from Cio-C2o, and more preferably, from Ci2to Ci8or from Ci2to Ci6or from Ci4to Ci6.

[0092] Suitable succinates (including their salts) that may optionally be included are those with a C10 to C20hydrophobic portion. Illustrative examples include disodium oleamido Ml PA sulfosuccinate, disodium oleamido MEA sulfosuccinate, disodium lauryl sulfosuccinate, disodium laureth sulfosuccinate, diammonium lauryl sulfosuccinate, diammonium laureth sulfosuccinate, dioctyl sodium sulfosuccinate, disodium oleamide MEA sulfosuccinate, sodium dialkyl sulfosuccinate, or a mixture thereof. For the avoidance of doubt, MIPA and MEA refer to monoisopropanolamine

[0093] 15 and monoethanolamine, respectively.

[0094] The acyl sarcosinates suitable for optional use include those having a C8-C20or Cio-Ci8or Ci2- Ci8acyl group. Illustrative examples of the sarcosinates that may optional be used include sodium lauroyl sarcosinate, sodium cocoyl sarcosinate, or a mixture thereof.

[0095] 20

[0096] In an embodiment of the invention, at least one anionic surfactant that may be optionally selected is sodium lauryl sulfosuccinate, sodium myristoyl sulfosuccinate, sodium cocoyl sulfosuccinate, sodium stearoyl sulfosuccinate, sodium laureth sulfosuccinate, sodium pareth sulfosuccinate, disodium laureth sulfosuccinate, disodium lauryl sulfosuccinate, diethylhexyl sodium sulfosuccinate, or a mixture thereof. In one embodiment of the invention, acyl sarcosinate makes up from 0.5 to 30% or from 1 to 15% or from 3 to 10% or 4 to 5% by weight of the total weight of anionic surfactant in zwitterionic rich wash composition, with sodium cocoyl sarcosinate, sodium lauroyl sarcosinate, or a mixture thereof often being preferred when a sarcosinate is optionally used.

[0097] 30

[0098] In yet another embodiment, optionally used anionic surfactant may include sodium methyl 2- sulfolaurate or disodium 2-sulfolaurate or both. P0001053 COM

[0099] -12-

[0100] Amphoteric surfactants may optionally be included in the zwitterionic rich wash composition of the invention. Illustrative examples include C10-18 alkylamidopropylamine N-oxides like laurylamidopropylamine N-oxide, C10-18 alkyldimethylamine N-oxides like lauryldimethylamine N- oxide, C10-18 alkylbetaines like laurylbetaine, or mixtures thereof.

[0101] 5

[0102] Other surfactants suitable for use having charge impacted by pH include cocoyl amine oxide, lauramine oxide, myristamine oxide, palmitamine oxide, stearamine oxide, oleamine oxide, cocamidopropyl amine oxide, lauryl amidopropyl amine oxide, myristyl amidopropyl amine oxide, palmityl amidopropyl amine oxide, stearyl amidopropyl amine oxide, oleamidopropyl amine oxide, or a mixture thereof. Additional optional examples of the amphoteric surfactants suitable for use include sodium lauroamphoacetate, sodium cocoamphoacetate, sodium lauroamphoacetate, sodium cocoamphoacetate, cocamphodipropionate, or a mixture thereof.

[0103] In an embodiment of the invention, when used, the amphoteric optionally selected can be at least

[0104] 15 80%, and preferably, at least 85%, and most preferably, at least 90% (or 90 to 100% or 94 to 100% or 94 to 98% or 100%) by weight amine oxide, whereby such amine oxide can have the formula: Rx-N+(Ry)2-O- where Rxis a C8-2o alkyl, and preferably, a C10-18 alkyl, and most preferably, a C12-18 alkyl (or C12-16 alkyl) and Ryis H or a Ci_6alkyl or C1-4 alkyl or 'C1-3 alkyl or C1-2 alkyl or - CH3. In another embodiment of the invention, amine oxide suitable for optional use is cocoyl amine

[0105] 20 oxide, lauramine oxide, myristamine oxide, palmitamine oxide, stearamine oxide, oleamine oxide, or a mixture thereof. In an embodiment of the invention, amphoteric surfactant when used will typically make up from 0.5 to 8% or from 1 to 6% or from 1.5 to 5% by weight of the total amount of zwitterioninc present in the wash composition.

[0106] In an embodiment of the invention other surfactants suitable for optional use may include imidazolines, sodium acyl amphoacetates, sodium acyl amphopropionates, disodium acyl amphodiacetates and disodium acyl amphodipropionates, where the acyl (i.e., alkanoyl group) can comprise a C7-Ci8alkyl portion.

[0107] 30 Nonionic surfactants may optionally be used in the zwitterionic rich wash composition. When used, nonionic surfactants are typically present at levels as low as 0.15, 0.3, 0.85, 1 , 1.5 or 2% by weight of the wash composition. The nonionics which may optionally be used include the reaction products of compounds having a hydrophobic group and a reactive hydrogen atom, for P0001053 COM

[0108] -13- example aliphatic alcohols, acids, amides or alkylphenols with alkylene oxides, especially ethylene oxide either alone or with propylene oxide. Specific nonionic surfactant compounds are alkyl (C6-C22) phenols, ethylene oxide condensates, the condensation products of aliphatic (C8- Ci8) primary or secondary linear or branched alcohols with ethylene oxide, and products made by

[0109] 5 condensation of ethylene oxide with the reaction products of propylene oxide and ethylenediamine.

[0110] In an embodiment of the invention, nonionic surfactants optionally used can include fatty acid / alcohol ethoxylates having the following structures: a) HOCH2(CH2)S(CH2CH2O)VH or b) HOOC(CH2)c(CH2CH2O)d H; where s and v are each independently an integer up to18; and c and d are each independently an integer from 1 or greater. In an embodiment of the invention, s and v are each independently

[0111] 15 6 to 18; c and d are each independently 1 to 30. Other options for nonionic surfactants include those having the formula HOOC(CH2)i-CH=CH--(CH2)k(CH2CH2O)zH, where i and k are each independently 5 to 15; and z is 5 to 50. In another embodiment of the invention, i and k are each independently 6 to 12; and z is 15 to 35.

[0112] 20 The nonionic may also include a sugar amide, such as a polysaccharide amide. Specifically, the surfactant may be one of the lactobionamides described in U.S. Pat. No. 5,389,279 to Au et al., entitled "Compositions Comprising Nonionic Glycolipid Surfactants” issued Feb. 14, 1995 or it may be one of the sugar amides described in U.S. Pat. No. 5,009,814 to Kelkenberg, entitled "Use of N-Poly Hydroxyalkyl Fatty Acid Amides as Thickening Agents for Liquid Aqueous Surfactant Systems" issued Apr. 23, 1991.

[0113] In an embodiment of the invention and if used, the nonionic surfactant may comprise an alkyl polyglucoside represented as:

[0114] R4-O-(S)n,

[0115] 30 where R4is a C6to C20 or C8to Ci8or C10 to Ci6linear or branched alkyl and S is a saccharide group of 5 or 6 carbons such as glucose, xylose, lactose, fructose, and / or mannose, and preferably, is glucose, and n represents the degree of polymerization and may have a value of from 1 to 12 or from 1 to 10 , and most preferably, from 1.2 to about 1.6 or from 1.3 to 1.5. P0001053 COM

[0116] -14- lllustrative cationic surfactants suitable for optional use include cetyltrimethylammonium bromide, cetyltrimethylammonium chloride, cetylpyridium chloride, behentrimonium chloride, stearalkonium chloride, lauryltrimethylammonium chloride, mixtures thereof or the like. If used,

[0117] 5 such surfactants will often make up from 0.01 to 4%, or from 0.1 to 3.5% or from 0,5 to 2% by weight of the wash composition. In an embodiment of the invention, no (0.0%) cationic surfactant is used.

[0118] In yet another embodiment of the invention, the nonionic surfactant when used includes polysorbate (like polysorbate 20), cocamide monoethanolamine (cocamide MEA), or a mixture thereof. In even another embodiment, optional nonionic makes up from 0.25 to 1 % or from 0.3 to 0.85% or from 0.35 to 0.55% by weight of the zwitterionic rich wash composition.

[0119] Inorganic salt is an optional ingredient to aid in composition thickening and water activity

[0120] 15 adjustment. Typical salts may be used like NaCI, KCI, MgCI2, CaCI2, mixtures thereof or the like. If used, the inorganic salt makes up from 0.01 to 5%, and preferably, from 0.1 to 4%, and most preferably, from 0.25 to 2.5% (or from 0.5 to 2%, or from 0.5 to 1 .5% or from 0.5 to 1%) by weight of the wash composition.

[0121] 20 Fatty acid sources for the surfactants described herein may, for example, include vegetable, soy, nut, jojoba, avocado, olive, seed oil (e.g., sunflower, linseed, rapeseed, moringa), fruit (e.g., mango, papaya, red berries, coconut), palm kernel and / or palm oil. In an embodiment of the invention, less than 5%, and preferably, less than 2%, and most preferably, less than 1 % (or 0.0%) palm kernel oil is used to make surfactant included in the present invention. In another embodiment of the invention, from 0.001 to 70%, and preferably, from 0.01 to 60%, and most preferably, from 1 to 50% (or 2 to 39%) by weight of total surfactant used in the present invention is derived from palm oil and / or palm kernel oil. In even another embodiment, surfactant in the present invention is less than 5% by weight (or 0.0% by weight) of the total palm kernel oil derived.

[0122] 30 In even another embodiment of the invention, less than 95%, and preferably, less than 90%, and most preferably, less than 85% (or less than 80% or from 5 to 22% or from 6 to 20% or from 10 to 15%) by weight of the hydrophobic portion of surfactant used in the present invention are recovered from petroleum, palm oil, palm kernel oil and / or coconut oil. In still another P0001053 COM

[0123] -15- embodiment, from 90 to 100% by weight of the hydrophobic portion of at least one surfactant used in the present invention is not recovered from petroleum, palm oil, palm kernel oil and / or coconut oil.

[0124] 5 In a further embodiment of the invention, from 0.0 to 15% or from 0.05 to 12% or from 0.5 to 10% by weight of any of the surfactants used in the present invention may have hydrophobic portion with carbon recovered from purple carbon, and that is, carbon recovered from carbon dioxide or carbon monoxide or methane waste gas (or mixtures thereof) via biotechnology that utilizes microbial gas fermentation. It is also suitable in the invention to utilize carbon sources recovered from algal oils, microbial enhanced oil recovery processes and from plants like the oil recovered from Macauba pulp.

[0125] Polyols (i.e. , humectants) are suitable for optional use in the zwitterionic rich wash compositions of the present invention whereby the same are limited only to the extent that they are suitable for

[0126] 15 use in a consumer product. Illustrative and nonlimiting examples of the optional polyols suitable for use in the present invention include sorbitol, glycerol, mannitol, xylitol, maltitol, or mixtures thereof. In an embodiment of the invention, the polyol used is at least 50% by weight glycerol, based on total weight of the polyol used. In another embodiment of the invention, the polyol used is all glycerol (100% by weight). Polyol, when used, will typically make up from 1 to 20% by weight

[0127] 20 of the wash composition, and preferably, from 1 to 15% by weight of the wash composition, and most preferably, from 1 to 12% (or from 1 to 10% or 1 to 7% or from 1 .2 to 5%) by weight of the wash composition.

[0128] Water typically makes up from 30 to 92%, and preferably, from 40 to 90%, and most preferably, from 50 to 88% (or from 55 to 86% or from 57 to 83%) by weight of the high zwitterionic wash composition.

[0129] Adjusters suitable to modify / buffer the pH may optionally be used. Such pH adjusters include triethylamine, NaOH, KOH, H2SO4, HCI, C6H8O7(i.e., citric acid) or mixtures thereof. The pH

[0130] 30 adjusters are added at amounts to yield the desired final pH (as defined from 5.9 to 8). The pH values may be assessed with commercial instrumentation such as a pH meter made commercially available from Thermo Scientific®. P0001053 COM

[0131] -16-

[0132] Structurant (i.e., lathering aids suitable to align surfactant polar groups) can optional be included in the wash composition. Such aids include C6-Ci4acids, or alcohols and / or amide derivatives thereof. Caproic, caprylic, capric, lauric and myristic acid, and any alcohol or amide derivatives of the same may be used in any combination. When used, the structurant or lathering aid makes

[0133] 5 up less than 5.75% or from 0.01 to 4.2% or from 0.5 to 3.75% or from 0.6 to 2% by weight of the wash composition. In an embodiment of the invention, no structurant (0.0% by weight) is used. In even another embodiment, less than 1.5% by weight structurant is present in the wash composition when soap is included, and the pH of the wash composition exceeds 7.5. In an embodiment of the invention, structurant is used to stabilize the high zwitterionic wash composition should a lamellar phase composition be desired.

[0134] In an embodiment of the invention, the wash composition can comprise suspending agent to additionally contribute to, for example, product homogeneity, user skin appearance and sensory, the same typically making up from 0.02 to 0.7% or from 0.02 to 0.4% or from 0.02 to 0.3% or from

[0135] 15 0.02 to 0.1 % or from 0.015 to 0.175% or from 0.01 to 0.09 or from 0.011 to 0.08 or from 0.015 to 0.07% by weight of the wash composition. Such suspending agent is one which will not result in an increase or decrease in viscosity of the zwitterionic rich wash composition by more than 15% or by more than 10% or by more than 8% when compared to wash composition not having the suspending agent (tested directly after making). In another embodiment of the invention, the

[0136] 20 suspending agent could impact the wash composition viscosity (in either direction) by 0.001 to 9% or by 0.5 to 8.5% or from 1 to 8% or from 2 to 7% when compared to wash composition not having the suspending agent. In still another embodiment, the suspending agent will have almost no impact positive or negative on the viscosity of the zwitterionic rich wash composition where almost no impact means a change or delta in viscosity of 0.0 to 0.75%. Still further, and in another embodiment, the suspending agent is one which may impart no change (0.0%) in viscosity when included in the zwitterionic rich wash composition of the present invention. For the avoidance of doubt, suspending agent means a component that suspends insoluble ingredients in an aqueous liquid composition where the insoluble ingredients can include pearlescent ingredients (i.e., pearling agent).

[0137] 30

[0138] Illustrative examples of the suspending agent suitable for use include those which are a fermentation derived cellulose like Arbalon R-50® and Arbalon R-50® EV made available from Lubrizol. Such products comprise glycerine, cellulose and cellulose gum with 1 .3 to 2.5 or 1 .5 to P0001053 COM

[0139] -17-

[0140] 2.35 or 1 .55 to 2.25 times more cellulose than cellulose gum. Glycerine typically makes up from 2.45 to 3.6 or from 2.55 to 3.5 or from 2.75 to 3.3 times more than the total amount of cellulose and cellulose gum. Often, the desired cellulose is one derived from a microbial fermentation process.

[0141] 5

[0142] In even another embodiment of the invention, suspending agent is used with pearlescent ingredient when it is desirable for the wash composition to impart an iridescent, shimmering or metallic-type appearance. Pearlescent ingredient is limited only to the extent that the ingredient is one suitable for use in a topically applied consumer product. Often desired pearlescent ingredients include ethylene glycol monostearate (glycol stearate), ethylene glycol distearate (glycol distearate), or a mixture thereof. In one embodiment of the invention, glycol distearate is preferred. In another embodiment the pearlescent ingredient is present at 0.1 to 4%, and preferably, 0.1 to 3%, and most preferably, 0.15 to 2.5% or from 0.18 to 2.2% by weight of the wash composition.

[0143] 15

[0144] Thickeners or viscosity builders are suitable for optional use in the wash composition. These components can include nonmodified starch granules, in general, like potato starch, waxy maize starch as well as simple corn starch, i.e., a starch that gelatinizes at around 75°C. Pure-Gel® starches from Grain Processing Corporation are chemically modified corn starch granules having

[0145] 20 a gelatinization temperature at about 53°C and are often preferred for use. Modified and / or nonmodified starch granules with gelatinization temperatures from 30° to 85°C, and preferably, from 30° to 80°C, and most preferably, from 35 to 75°C are suitable for inclusion as the polymeric carbohydrate thickening agent in the end use product of the invention. In general, and notwithstanding the starch selected for use, it is typically preferred that the granules of the polymeric carbohydrate selected, upon use in the end use product, swell at least 200%, and preferably at least 400%, and more preferably, at least 600%, and most preferably, at least 800% by volume in the in the end use product to form swollen starch gel particles with a size in the range of 2 to 300 micrometers, or preferably, from 3 to 275 microns, and most preferably, from 4 to 245 microns. Examples of the often preferred Pure-Gel® starches suitable for use are Pure

[0146] 30 Gel B990, Pure Gel B992, Pure Gel B980 and Pure Dent starches made commercially available from Grain Processing Corporation. Additional polymeric carbohydrates suitable for use (i.e., starch granules) are National™ 1545, Amioca corn starch, Clearjel, National 1333, Colflo 67, Novation 1600, Novation 2700 or Purity 420 made available from Ingredion. Chemically modified P0001053 COM

[0147] -18- starch granules are also suitable for use. Starch granules modified with nonionic hydrophilic groups such as hydroxyethyl or hydroxypropyl and / or ionic groups such as phosphate, carboxylate, sulfate, sulfonate and dialkyl / trialkyl amino or quaternary ammonium ions are often selected for use.

[0148] 5

[0149] Even other polymeric carbohydrates suitable for use are water soluble starches like Ultra- Sperse®, tapioca and waxy maize starch, and National 1215 pregelatinized unmodified corn starch, or mixtures thereof. Still others include Structure® ZEA, a hydroxypropyl modified corn starch, or Structure® XL, a cross-linked pregelatinized hydroxypropyl starch phosphate, or mixtures thereof, whereby the same are also available commercially from Nouryon.

[0150] Other useful thickeners that can be used include carbohydrate gums such as cellulose gum, microcrystalline cellulose, cellulose gel, hydroxyethyl cellulose, hydroxypropyl cellulose, sodium carboxymethylcellulose, hydroxymethyl or carboxymethyl cellulose, methyl cellulose, ethyl

[0151] 15 cellulose, guar gum, gum karaya, gum tragacanth, gum Arabic, gum acacia, gum agar, xanthan gum, and mixtures thereof; modified and nonmodified starch granules often with gelatinization temperatures between 30 to 85°C. Products sold under the brand name Vivapur® COS 6 made available by Rettenmaier & Sohne GmbH are also suitable for optional use.

[0152] 20 Additional thickeners that also may be used include Versathix™ (PEG-150 Pentaerythrityl Tetrastearate (and) PPG-2 Hydroxyethyl cocamide and water), Aristoflex AVC (ammonium acryloyldimethyltaurate / VP copolymer), Carbopol® Ultrez 10 and 20 (crosslinked polyacrylic acid); alkaline soluble emulsion polymers such as Aculyn 28, Acuyln 22 or Carbopol Aqua SF1 ; cationic polymer such as modified polysaccharides including cationic guar available from Aventis under the trade name Jaguar C13S, Jaguar C14S, Jaguar C17, or Jaguar C16; cationic modified cellulose such as UCARE Polymer JR 30 or JR 40 from Amerchol; N-Hance 3000, N-Hance 3196, N-Hance GPX 215 or N-Hance GPX 196 from Ashland, Inc.; synthetic cationic polymer such as MerQuat 100, MerQuat 280, Merquat 281 and Merquat 550 by Nalco; cationic starches, e.g., StaLok® 100, 200, 300 and 400 made by Galactasol 800 series by Henkel, Inc.; Quadrosoft Um-

[0153] 30 200; and Polyquaternium-24.

[0154] In an embodiment of the invention, the surfactant preparation, end use product or both can comprise thickener that comprises at least 75% (or at least 85%, or from 90 to 100% or 100%) by P0001053 COM

[0155] -19- weight polymeric carbohydrate. In another embodiment, the polymeric carbohydrate is at least 50% by weight or 55 to 100% or 65 to 95% or 75 to 90% or 80 to 90% or 90 to 98% or at least 95% or 100% by weight starch where starch is defined to mean polymer, plant derived and comprising D-Glucose and 1 ,4 and / or 1 ,6 alpha-glycosidic bonds or linkages, and preferably,

[0156] 5 both.

[0157] In even another embodiment, the thickener optionally used is Structure® ZEA, a hydroxypropyl modified corn starch, or Structure® XL, a cross-linked pregelatinized hydroxypropyl starch phosphate.

[0158] Typically, total amount of thickener, if used, makes up from 0.3 to 8%, and preferably, from 0.5 to 10%, and most preferably, from 0.9% to 7.5% (or 1 to 7% or 1.1 to 6% or 1.1 to 4.25% or 1.2 to 3%) by weight of the wash composition. In an embodiment of the invention, the wash composition of the present invention can comprise no thickener, 0.0%. In another embodiment, less than 1 %

[0159] 15 by weight of thickener is used when suspending agent is used. In yet another embodiment of the invention, less than 1 %, and preferably, less than 0.5%, and most preferably, less than 0.25% or 0.0% by weight of any thickener is used that is acrylate based. In still another embodiment of the invention, if thickener is used the wash composition can comprise from 0.02 to 0.8% or 0.05 to 0.7% or from 0.08 to 0.5% by weight xanthan gum, carboxymethylcellulose, methylcellulose,

[0160] 20 arcacia gum, tragacanth gum, hydroxyethyl cellulose, tapioca starch, citrus fiber (e.g., Herbacel® AQ from Herbafood), or a mixture thereof.

[0161] As to oils suitable for optional use in the wash compositions of this invention, the same include any oils suitable for topical application via a wash composition, and preferably, an oil suitable to contact skin that is natural and sustainable. Illustrative examples of such oils include silicone oils and / or mineral oil, but preferably those that are naturally sourced and sustainable like, arachis oil, castor oil, coconut oil, corn oil, cotton seed oil, olive oil, rapeseed oil, safflower seed oil, sesame seed oil, soybean oil, avocado oil, macadamia nut oil, argan oil, pomegranate oil, argan Moroccan oil, blueberry oil, raspberry oil, walnut oil, pecan oil, peanut oil, bayberry oil, mango seed oil, jojoba

[0162] 30 oil, hydrolyzed jojoba oil, mixtures thereof or the like. If a silicone oil is optionally used, the same can include, for example, PEG-3 Dimethicone, PEG-8 Dimethicone, PEG-9 Dimethicone, PEG- 10 Dimethicone, PEG-11 Methyl ether dimethicone, PEG-12 Dimethicone, PEG-14 Dimethicone, PEG-17 Dimethicone, PEG-32 Dimethicone, mixtures thereof or the like. P0001053 COM

[0163] -20-

[0164] In an embodiment of the invention, the end use product of the present invention comprises from 0.5 to 10% by weight oil, and preferably, from 1 .0 to 7.5%, and most preferably, from 1 .5 to 6.5% (or from 1 .75 to 5.5% or from 2 to 4% or from 0.8 to 2%) by weight oil based on total weight of oil

[0165] 5 in the end use product. In another embodiment, the oil used is at least 70%, or 80% or 90 to 100% or 100% by weight soybean oil including mixtures of soybean oil and hydrogenated soybean oil at a weight ratio from 1 :10 to 10:1 or from 1 :5 to 5:1 or from 1 :3 to 3:1. In another embodiment, from 5% to 40% and preferably, from 7% to 32%, and most preferably, from 10 to 25% of the oil used is present as nanometer droplets. Such droplets are typically at a droplet size from 50 to 750 nm, and preferably, from 75 to 700 nm and most preferably, from 100 to 600 nm. Oil droplets not within the nanometer range typically are present in a size from 1 micron to 600 microns, and preferably, from 2 to 550 microns, and most preferably, from 5 to 300 microns or from 3 to 200 microns or from 4 to 100 microns or from 5 to 100 microns. In an embodiment of the invention, when oil is used in both the micron and nanometer ranges, from 15 to 95% or from

[0166] 15 20 to 85% or from 35 to 80% or from 40 to 95% or from 60 to 90% of the oil is in the micron droplet size, based on total weight of oil optionally used in the wash composition.

[0167] Optional water-soluble cosmetic agents suitable for use in the zwitterionic rich wash composition of the invention are limited only to the extent that they are capable of being used in a consumer

[0168] 20 product at the desired pH described.

[0169] Illustrative examples of the skin benefit agents suitable to include in the wash composition are acids, like amino acids, such as arginine, valine or histidine. Additional water-soluble benefit agents suitable for use include vitamin B2, niacinamide (vitamin B3), vitamin B5(Panthenol), vitamin B6, folic acid (vitamin B9), vitamin C, mixtures thereof or the like. Water soluble derivatives of such vitamins may also be employed. For instance, vitamin C derivatives such as ascorbyl tetraisopalmitate, magnesium ascorbyl phosphate and ascorbyl glycoside may be used alone or in combination with each other. Other water-soluble benefit agents suitable for use include 4- ethyl resorcinol, water soluble extracts of sage, aloe vera, green tea, grapeseed, thyme,

[0170] 30 chamomile, yarrow, cucumber, liquorice, rosemary extract, or mixtures thereof. Water soluble sunscreens like ensulizole (phenylbenzimidizole sulfonic acid), disodium phenyl dibenzimidazole tetra sulfonate, or mixtures thereof may also be included. Total amount of optional water-soluble benefit agents (including mixtures) when present in the wash composition may range from 0.001 P0001053 COM

[0171] -21- to 15%, preferably from 0.001 to 10%, and most preferably, from 0.01 to 8% (or from 1 to 6% or from 1 to 3%) by weight of the wash composition.

[0172] It is also within the scope of the present invention to optionally include oil soluble cosmetic agents

[0173] 5 (i.e., non-water-soluble agents defined as less than 1.0 g of such agent (solute) can be dissolved in 100 ml of 25°C water (solvent) at atmospheric pressure). The only limitations with respect to such oil soluble cosmetic agents are that the same are suitable for use in a consumer product.

[0174] Illustrative examples of the types of oil soluble cosmetic agents that may optionally be used in the wash composition include components like stearic acid, palmitic acid, sunscreens like ethylhexylmethoxycinnamate, bis-ethyl hexyloxyphenol methoxyphenol triazine, 2-ethylhexyl-2- cyano-3,3-diphenyl-2-propanoic acid, drometrizole trisiloxane, 3,3,5-trimethyl cyclohexyl 2- hydroxybenzoate, 2-ethylhexyl-2hydroxybenzoate, or mixtures thereof.

[0175] 15 Other optional oil soluble cosmetic agents suitable for use include resorcinols like thiamidol (isobutylene thiazolyl resorcinol), 4-hexyl resorcinol, 4-phenylethyl resorcinol, 4-cyclopentyl resorcinol, 4-cyclohexyl resorcinol 4-isopropyl resorcinol or a mixture thereof. Also, 5-substituted resorcinols like 4-cyclohexyl-5-methylbenzene-1 ,3-diol, 4-isopropyl-5-methylbenzene-1 ,3-diol, mixtures thereof or the like may be used. The 5-substituted resorcinols, and their synthesis are

[0176] 20 described in commonly assigned U.S. Published Patent Application No. 2016 / 0000669A1.

[0177] Even other oil soluble cosmetic agents suitable for use include omega-3 fatty acids, omega-6 fatty acids, climbazole, farnesol, ursolic acid, myristic acid, geranyl geraniol, oleyl betaine, cocoyl hydroxyethyl imidazoline, hexanoyl sphingosine, 10-hydroxystearic acid, 12-hydroxystearic acid, petroselinic acid, conjugated linoleic acid, terpineol, thymol, mixtures thereof or the like.

[0178] In an embodiment of the invention, the optional oil soluble cosmetic agent used is a retinoic acid precursor. In one embodiment of the invention, the retinoic acid precursor is retinol, retinal, retinyl propionate, retinyl palmitate, retinyl acetate, or a mixture thereof. Retinyl propionate, retinyl

[0179] 30 palmitate and mixtures thereof are typically preferred when used. P0001053 COM

[0180] -22-

[0181] When optional oil soluble cosmetic agent is used in the wash composition, such cosmetic agent typically makes up from 0.001 to 2% (or to 1.5%), and preferably, from 0.001 to 1%, and most preferably, from 0.05 to 0.85% by weight of the wash composition.

[0182] 5 Conventional preservatives can desirably be incorporated into the wash composition to protect against the growth of potentially harmful microorganisms. Cosmetic chemists are familiar with appropriate preservatives and routinely choose them to satisfy the preservative challenge test and to provide product stability. Suitable traditional preservatives that may be used include those traditionally found in consumer products. Preservatives suitable for preferred use are iodopropynyl butyl carbamate, phenoxyethanol, hydroxyacetophenone, ethylhexylglycerine, imidazolidinyl urea, sodium dehydroacetate, benzyl alcohol, sodium benzoate, and mixtures thereof. Other preservatives suitable for use include sodium dehydroacetate, chlorophenesin and decylene glycol. The preservatives should be selected having regard for the use of the composition and possible incompatibilities between the preservatives and other ingredients

[0183] 15 included. Preservatives are preferably employed in amounts ranging from 0.01 % to 2.0% by weight of the total weight of the surfactant preparation and end use product. Also preferred is a preservative system with hydroxyacetophenone alone or in a mixture with other preservatives.

[0184] While suitable for use, but in an embodiment of the invention, the wash composition is

[0185] 20 substantially free of hydantoins, parabens and isothiazolinones.

[0186] In another embodiment, the preservative used is sodium benzoate. In even another embodiment, 1 ,2-octanediol is used with preservative like phenoxyethanol, iodopropynyl butyl carbamate or both where the vicinal diol typically makes up from 0.5 to 1 .5 or from 0.6 to 1 .3 or from 0.7 to 1.2 times the amount of preservative used. Vicinal diols are also suitable for use with Na Benzoate.

[0187] In even another embodiment, the wash composition made according to the invention may comprise thymol, terpineol, chloroxylenol, zinc pyrithione, piroctone olamine, or a mixture thereof.

[0188] 30 Fragrances, fixatives, chelators (like EDTA) and exfoliants may optionally be included in the wash composition. Each of these substances may range from about 0.03 to about 5%, preferably between 0.1 and 3% (or from 0.3 to 1 .2%) by weight of the total weight of the wash composition. To the extent exfoliants are used, those selected should be of small enough particle size so that P0001053 COM

[0189] -23- they do not impede the performance of any packaging used to dispense the wash composition of the invention.

[0190] In an embodiment of the invention, the wash composition will comprise at least one of thiamidol,

[0191] 5 oleyl adapalenate, stearic acid, hyaluronic acid, 10-hydroxystearic acid, 12-hydroxystearic acid, mandelic acid, caffeine, tretinoin ((all-E)-3,7-dimethyl-9-(2,6,6-trimethyl-1 cyclonexen-1-yl)- 2,4,6,8-nonatetraenoic acid), epigallocatechin gallate, palmitic acid, conjugated linoleic acid, adapalene (6-[3-(1-adamantyl)-4-methoxyphenyl]naphthalene-2-carboxylic acid), 2- mecaptonicotinoyl glycine, salicylic acid, benzoyl peroxide, N-acetyl-DL-methionine, terpineol, thymol, glycerine, retinol, retinyl palmitate, retinyl propionate, 4-ethyl resorcinol, 4-hexyl resorcinol, or a mixture thereof. In another embodiment and when used, such ingredients make up (collectively) from 0.0001 to 7%, or from 0.001 to 6%, or from 0.01 to 5% or from 0.01 to 4% or from 0.01 to 3% (or 0.1 to 2% or 0.1 to 1 .25 or 0.1 to 7%) by weight of the wash composition.

[0192] 15 When making the wash composition, the desired ingredients may be mixed with conventional apparatus under moderate shear and atmospheric conditions, with temperature being from 30 to 85°C whereby shear continues until a homogeneous product is recovered.

[0193] The packaging for the wash composition typically is not limited as long as composition can be

[0194] 20 dispensed. In an embodiment on the invention, wash composition is sold in a pouch, bottle, jar, tube, or canister. The packaging preferably is biodegradable and / or is prepared from recycled materials including post-consumer resins. Paper bottles are also suitable for use as are those that comprise bamboo. Other suitable formats include impregnating the wash composition in nonwovens like those having cotton, polyester or both or by providing the end use products in water soluble sachets such as those essentially consisting of polyvinyl alcohol.

[0195] The Samples provided in the Example are provided to facilitate an understanding of the invention. They are not intended to limit the scope of the claims.

[0196] 30 Example

[0197] The Samples in the Table were prepared by first making an emulsion of the waxes and lipids in water. The emulsion preparation was achieved by mixing with moderate shear, temperature at 75°C and pressure was atmospheric. The emulsion was cooled to about 40°C and pH was P0001053 COM

[0198] -24- adjusted. The remainder of ingredients were subsequently added with water added to balance (heated and stirred until homogeneous, then cooled as above), making the compositions represented in each Sample. The percents shown in the Table and referred to in this Example are percents by weight. All compositions included, in addition to the ingredients listed in the Table,

[0199] 5 1.3% preservative, 1 % fragrance, 0.9% glycerin, 0.3% stearic acid, 0.3% hydroxystearic acid, and 0.1 % to 0.4% thickener. Citric acid or sodium hydroxide were added to final stage batches to reach desired pH values. Sample 2 was the control composition having all isethionate as the anionic surfactant, representing a conventional open foam wash composition with a defined foam volume of about d 460 ml. Suspending agent used was Arbalon® R-150A made available by Lubrizol, the taurate used was sodium methyl lauroyl taurate, the glycinate was sodium cocoyl glycinate and the isethionate (SLI) was sodium lauroyl isethionate. The zwitterionic surfactant used, CAPB, was cocamidopropyl betaine. The pH of the compositions in the Samples was 6.2, and viscosity was measured at circa 6,000 mPa-s.

[0200] 15 Stability or stable compositions consistent with the invention had an initial viscosity (i.e., viscosity taken within 24 hours of the composition being made) that changed by no more than 15% after being stored for at least 1 to 2 months at 45°C. Compositions made according to the invention and after being stored at 45°C for such time also displayed no malodor, color change, syneresis, or precipitate formation. All Samples (compositions) that failed, not made consistent with the

[0201] 20 invention, at least showed syneresis and were not suitable for Sita Foam Analysis.

[0202] Foam volume (in ml) as shown in the data of the Table was measured with a Sita Foam Tester R- 2000 measurement device, three runs and readings were recorded and averaged for each Sample with temperature set at 37°C and the device set at automated read at 15, 30, 45 and 60 seconds. The three readings taken at 60 seconds were averaged and recorded in the Table. Compositions made according to the invention generated substantially more open foam when compared to the control. Compositions not consistent with the invention were, again, unstable, displayed at least syneresis and were not suitable for testing, Sita Foam Analysis.

[0203] 30 The wash compositions made according to the present invention were stable, resulted in an excellent open foam, and surprisingly, with reduced levels of surfactants (not exceeding 13% by weight). The wash compositions were stable, free of syneresis, and color and odour changes as determined by trained panelists. Moreover, after washing with compositions consistent with the P0001053 COM

[0204] -25- invention, the panelists concluded that the wash compositions lathered well, rinsed easily and produced a soft and smooth open foam sensation after use.

[0205] Table

[0206] 5 *Control Composition, anionic surfactant all sodium lauroy isethionate.

[0207] **added as supplied, 2% active.

[0208] ***three readings at 60 sec.

Claims

P0001053 COM-26-Claims:

1. A wash composition comprising: a. a zwitterionic surfactant having the formula:5 R-C(R1)2-N+(R1)2C(R1)2COO- X+I,R-C(R1)2-N+(R1)2C(R2)2C(R1)2-S(O)3- X+II,RCOO-N(R1)-(CR12)Z-N+(R2)2C(R1)2COO- X+III, orR-C(R1)2-N+(R1)2C(R1)2C(R3)2C(R1)2-S(O)3- X+IV, or a mixture thereof, where each R is independently a C5to C19 saturated or unsaturated alkyl, each R1is independently a hydrogen or Ci-3alkyl, each R2is independently H or Ci-3alkyl and R3is H, a Ci-3alkyl or OH, X+is a counter ion comprising Na+, K+, NH4+, or a mixture of the same, with the proviso that only one R3is OH and z is an integer from 1 to 4, or from 2 to 4 or 2 to 3 or 3; b. an acyl isethionate;15 c. a co-anionic surfactant that is not an acyl isethionate; d. optionally an amphoteric surfactant, nonionic surfactant, cationic surfactant or a mixture thereof, wherein: i) the wash composition comprises from 4.5 to 13%, and preferably, from 5 to 12%20 or from 5.5 to 11 % by weight total surfactant based on total weight of the wash composition; ii) the total surfactant in the wash composition comprises from 50.5 to 82%, or from 52.5 to 80%, or from 55 to 78%, or from 55 to 76% by weight zwitterionic surfactant and from 18 to 49.5%, or from 22.5 to 47%, or from 25 to 45%, or from 27 to 44% by weight anionic surfactant; and iii) total anionic surfactant in the wash composition is greater than 30 to 96%, or from 31 to 95% or from 31 to 65%, or from 31 to 55%, or from 31 to 50% or from 32 to 48% by weight acyl isethionate, the wash composition having a pH from 5.9 to 8, or from 6 to 7.25, or from 6.1 to 7, or from30 6.2 to 6.9 or from 6.2 to 6.8 and with the proviso that if the total anionic surfactant is from 50% by weight or less acyl isethionate, the co-anionic surfactant comprises an acyl glycinate.P0001053 COM-27-2. The wash composition according to claim 1 wherein the wash composition further comprises a cellulose comprising suspending agent.

3. The wash composition according to claim 2 wherein the cellulose comprising suspending5 agent is derived from microbial fermentation.

4. The wash composition according to any of the preceding claims wherein the wash composition comprises less than 1.5%, and preferably, less than 1 %, and most preferably, less than 0.5% or less than 0.2% or less than 0.1 % by weight sulfate-based surfactant.

5. The wash composition according to any of the preceding claims wherein the wash composition comprises no sulfate-based surfactant and comprises less than 15 ppm 1 ,4- dioxane or less than 2 ppm 1 ,4-dioxane or less than 1 ppm 1 ,4-dioxane or 0.0 ppm 1 ,4- dioxane based on total weight of the wash composition.

156. The wash composition according to any of the preceding claims wherein the wash composition comprises less than 1 %, and preferably, less than 0.5%, and most preferably, less than 0.25% or 0.0% by weight of an acrylate-based thickener.20 7. The wash composition according to any of the preceding claims wherein the wash composition has a lather volume over 500 ml as measured with a Sita Foam Analyzer when the wash composition is at 40 degrees centigrade and measured after 60 seconds of agitation.

8. The wash composition according to any of the preceding claims wherein the isethionate is sodium lauroyl isethionate and the co-anionic surfactant is an acyl taurate or an acyl glycinate.

9. The wash composition according any of the preceding claims wherein the zwitterionic30 surfactant comprises cocamidopropyl betaine.P0001053 COM-28-10. The wash composition according to any of the preceding claims wherein the wash composition further comprises omega-3 fatty acid, omega-6 fatty acid, climbazole, farnesol, ursolic acid, myristic acid, geranyl geraniol, oleyl betaine, cocoyl hydroxyethyl imidazoline, hexanoyl sphingosine, 10-hydroxystearic acid, 12-hydroxystearic acid, petroselinic acid,5 conjugated linoleic acid, terpineol, thymol, or a mixture mixtures thereof.

11. The wash composition according to any of the preceding claims wherein the wash composition further comprises arginine, valine, histidine, vitamin B2, niacinamide, vitamin B5vitamin B6, folic acid, vitamin C, vitamin C, ascorbyl tetraisopalmitate, magnesium ascorbyl phosphate ascorbyl glycoside, 4-ethyl resorcinol, extracts of sage, aloe vera, green tea, grapeseed, thyme, chamomile, yarrow, cucumber, liquorice, or ensulizole (phenylbenzimidizole sulfonic acid), or disodium phenyl dibenzimidazole tetra sulfonate, or mixtures thereof.15 12. The wash composition according to any of the preceding claims wherein the wash composition further comprises epigallocatechin gallate, palmitic acid, glycerol, adapalene (6-[3-(1-adamantyl)-4-methoxyphenyl]naphthalene-2-carboxylic acid), 2-mecaptonicotinoyl glycine, salicylic acid, benzoyl peroxide, N-acetyl-DL-methionine, or a mixture thereof.

13. The wash composition according to any of the preceding claims wherein the wash composition does not comprise at least one of a paraben, hydantoin, isothiazolinone, phthalate or dye, and preferably does not comprise any paraben, hydantoin, isothiazolinone, phthalate and dye.25 14. A method for washing a surface comprising contacting the surface with a wash composition according to any of the preceding claims and rinsing the surface with water.

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