WO2020131678A1 - Cleansing composition and method - Google Patents

Abstract

The disclosed technology relates to a composition and method for the treatment of a pruritic skin condition comprising cleansing the scalp and/or skin with a cleansing composition comprising: a) from about 0.25 to about 5 wt.% of an acrylic copolymer prepared from a monomer mixture comprising: i) from about 35 to about 65 wt.% of at least one acrylic acid, methacrylic acid; ii) from about 65 to about 35 wt.% of at least one C₁ to C₅ alkyl ester of acrylic acid or methacrylic acid; and iii) from about 0.03 to about 3 wt.% at least one polyunsaturated crosslinker monomer; b) from about 0.05 to about 2 wt.% of at least one cationic polymer; and c) from about 5 to about 20 wt.% of an anionic surfactant; and d) a water phase component present in an amount of q.s. to 100 wt.%.

Description

4607-01

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CLEANSING COMPOSITION AND METHOD

TECHNOLOGICAL FIELD

[0001] The present technology relates to a method for mitigating pruritus caused by prolonged exposure to low humidity conditions comprising applying to the scalp and skin of a mammalian subject a cleansing composition comprising an acrylic copolymer, a cationic polymer and an anionic surfactant chassis.

BACKGROUND

[0002] Many people suffer from different skin conditions that result in dryness, discoloration, edema, pain and general irritation. Some of these conditions are elicited by topical cleansing products including shampoos, body cleansers and other personal care products that contain harsh detersive surfactants. These detersive surfactants remove some of the skin’s protective lipids and/or secretions which may increase the permeability and sensitivity of the skin to topically applied chemicals which would not otherwise cause irritation. A typical symptom of irritation includes itching (pruritus). Itch can be defined as a sensation which provokes the desire to scratch the area from which the sensation originates. No matter what the ultimate cause of itch, the sensation experienced is the same and provokes the desire to scratch to curtail the sensation.

[0003] Environmental influences may also adversely affect the skin’s barrier function and provoke irritation. Irritation results from, or is aggravated by, extremes in humidity, exposure to sunlight, and abrasive clothing. A very common condition due to low humidity is known as“winter itch” in which the very low humidity conditions of winter month cold climates (particularly when accompanied by indoor heating) or prolonged exposure to refrigerated air from air conditioners in summer month warm climates produces itchy scalp and/or skin. When cold, dry air is artificially heated it becomes even dryer, acts almost like a sponge, and “pulls” water from the skin through enhanced surface evaporation. Since water is the main“softener” of the skin, dry skin may become rough, scaly, and eventually red, inflamed, and itchy. In severe cases these 4607-01

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- 2 changes will have the appearance of dermatitis. A treatment for“winter itch” is to: 1 ) increase the relative humidity of the air; 2) decrease factors that may exacerbate the problem, such as excessive bathing and the use of harsh cleansers; and 3) moisturize the skin with humectant and/or emollient containing creams, lotions, or ointments.

[0004] International Pub. No. WO 2005/023970 describes a method for reducing the irritation associated with surfactant containing personal care cleansing compositions. The disclosure in the paragraph bridging pages 5 and 6 of the publication postulates that the free unbound surfactant molecules and/or free unbound surfactant micelles contained in a personal care composition are irritants to the skin and eyes. The disclosure teaches that the irritation associated with anionic surfactant containing personal care compositions can be reduced by including a hydrophobically modified acrylic polymer that can bind the free unbound anionic surfactant and/or free unbound anionic surfactant micelles. The anionic surfactants suitable for the disclosed method are set forth on pages 8 to 12 of the publication. The preferred anionic surfactants are selected from alkyl ether sulfates.

[0005] Disclosed hydrophobically modified acrylic polymers include hydrophobically modified crosslinked acrylic copolymers that are synthesized from at least one ethylenically unsaturated carboxylic acid monomer and at least one ethylenically unsaturated hydrophobically modified monomer. International Pub. No. WO 2005/023970 teaches that exemplary hydrophobically modified acrylic copolymers are set forth in U.S. Patent No. 6,433,061 (assigned to Lubrizol Advanced Materials, Inc.). The WO publication additionally exemplifies polymers available under the trade names Carbopol^® Aqua SF-1 (INCI name: Acrylates Copolymer) and Carbopol^® ETD 2020 (INCI name: Acrylates/C 10-30 Alkyl Acrylate Crosspolymer) both manufactured and marketed by Lubrizol Advanced Materials, Inc. as suitable polymers for use as a surfactant binder.

[0006] International Pub. No. WO 2015/038601 discloses a method for mitigating pruritus caused by prolonged exposure to low humidity conditions by bathing with a liquid fatty acid soap composition thickened with the crosslinked acrylic copolymer (INCI name: Acrylates Copolymer) disclosed in U.S. 4607-01

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2007/0213243. The Acrylates Copolymer disclosed in U.S. 2007/0213243 and WO 2015/038601 is prepared from (meth)acrylic acid, a Ci to Cs alkyl ester of (meth)acrylic acid and a polyunsaturated crosslinker.

[0007] To achieve the desired rheology profiles and to disperse the multitude of different ingredients within the soap composition, synthetic rheology modifying polymers and synthetic surfactants have been employed to obtain a composition which is stable with respect to viscosity and visual phase homogeneity over a period of time and a wide range of temperatures. These parameters are particularly significant for liquid compositions wherein the large quantity of water in the formulation makes the establishment of a stable composition more difficult, particularly when substantially water insoluble adjuncts are dispersed in the formulation.

[0008] While the foregoing fatty acid soap-based compositions containing polymeric acrylic thickeners are useful in mitigating winter seasonal itch, there is no recognition that winter seasonal itch irritation can be treated or mitigated by a non-fatty acid soap cleansing composition formulated with an acrylic copolymer, an anionic syndet (non-soap) surfactant and a cationic polymer.

SUMMARY OF THE TECHNOLOGY

[0009] In accordance with a general embodiment of the disclosed technology, the cleanser utilized in the treatment method comprises an acrylic copolymer, a cationic polymer, an anionic surfactant chassis and water.

[0010] In accordance with another general embodiment of the present technology, the cleanser comprises a crosslinked alkali-swellable acrylic-based emulsion copolymer, a cationic polymer, a surfactant chassis selected from an alkyl ether sulfate, an amphoteric surfactant, and water.

[0011] In accordance with still another general embodiment of the technology, there is provided a method for the treatment or mitigation of a pruritic skin condition comprising applying to the scalp and/or skin a cleansing composition comprising:

a) an acrylic copolymer prepared from a monomer mixture comprising: 4607-01

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- 4 - i. about 35% to about 65% by weight of acrylic acid, methacrylic acid, or combinations thereof;

ii. about 65% to about 35% by weight of at least one Ci to Cs alkyl ester of acrylic acid or methacrylic acid; and

iii. about 0.03% to about 3% by weight of at least one polyunsaturated crosslinker monomer;

b) at least one cationic polymer;

c) at least one anionic surfactant selected from at least one of an ethoxylated anionic surfactant, a non-ethoxylated anionic surfactant, and mixtures thereof.

d) an optional amphoteric surfactant; and

e) water.

[0012] In accordance with still another general embodiment of the disclosed technology, a method is provided for the treatment or mitigation of a pruritic skin condition caused by prolonged exposure to low relative humidity conditions comprising applying to the scalp and/or skin a composition comprising:

a) an acrylic copolymer prepared from a monomer mixture comprising:

i. about 35% to about 65% by weight of acrylic acid, methacrylic acid, or combinations thereof;

ii. about 65% to about 35% by weight of at least one Ci to Cs alkyl ester of acrylic acid or methacrylic acid; and

iii. about 0.03% to about 3% by weight of at least one polyunsaturated crosslinker monomer;

b) at least one cationic polymer;

c) at least one anionic surfactant selected from at least one of an ethoxylated anionic surfactant, a non-ethoxylated anionic surfactant, and mixtures thereof;

d) at least one amphoteric surfactant; and

e) water. 4607-01

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BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a plot of the mean itchiness rating (paired T-test) from panelists comparing the formulation Examples 1 and 2 of the disclosed technology with a control formulation.

[0014] Figure 2 is a chart of survey results from panelists comparing ability of the formulation of Example 1 of the disclosed technology to mitigate the winter itch sensation compared to a control formulation.

[0015] Figure 3 is a chart of survey results from panelists comparing ability of the formulation of Example 2 of the disclosed technology to mitigate the winter itch sensation compared to a control formulation.

DESCRIPTION OF EXEMPLARY EMBODIMENTS

[0016] Certain embodiments of the technology disclosed herein are based on the surprising discovery that a cleansing composition comprising a crosslinked acrylic copolymer, a cationic polymer, an alkyl ether sulfate, water, and optionally, at least one amphoteric surfactant can mitigate pruritus of the scalp and skin.

[0017] As used here and throughout the present specification, the term “pruritus” or“pruritic” means is a sensation that causes the desire or reflex to scratch.

[0018] As used here and throughout the present specification, the term“low relative humidity” (RH) means a RH value of 50% or less in one aspect, 45% or less in another aspect, 40% or less in still another aspect, 35% or less in a further aspect, 30% or less in a still further aspect, and 25%, 20%, 15%, 10%, 5% and 1 % in an additional aspect.

[0019] By“relative humidity” is meant the ratio of the actual amount of water vapor present in a volume of air (by vapor density or vapor pressure) at a given temperature to the maximum amount of water vapor that could exist in the air at that temperature (by saturation vapor density or saturation vapor pressure), expressed as a percentage, and can be calculated by the equations:

RH = (actual vapor density)/(saturation vapor density) x 100 4607-01

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OG

RH = (actual vapor pressure)/(saturation vapor pressure) x 100

[0020] By“prolonged exposure to low relative humidity” means exposure to low humidity conditions for a sufficient time to develop pruritus.

[0021] As used here and throughout the specification,“winter itch” is a pruritic condition caused by exposure to cold winter air and/or to low humidity conditions.

[0022] By“cold winter air” is meant a temperature of 20°C or less in one aspect, 15°C or less in another aspect, 10°C or less in still another aspect, and 9°C, 8°C, 7°C, 6°C, 5°C, 4°C, 3°C, 2°C, 1 °C, 0°C, -5°C, -10°C and -15°C or less in a further aspect.

[0023] The phrase “at least one” means one or more of a particular component and thus includes individual components as well as mixtures/combinations of individually recited components.

[0024] The methods, polymers, components, and compositions of the present technology may suitably comprise, consist of, or consist essentially of the components, elements, steps, and process delineations described herein. The technology illustratively disclosed herein suitably may be practiced in the absence of any element, component or step which is not specifically disclosed herein.

[0025] Unless otherwise stated, all percentages, parts, and ratios expressed herein are based upon the total composition weight of the liquid cleansing composition.

[0026] Unless otherwise stated, all weight percentages, parts, and rations expressed here are based upon 100 percent active material (total solids).

[0027] When referring to a specified monomer(s) that is incorporated into a polymer of the disclosed technology, it will be recognized that the monomer(s) will be incorporated into the polymer as a unit(s) derived from the specified monomer(s) (e.g., repeating unit).

[0028] The term "personal care" as used herein includes, without being limited thereto, cosmetics, toiletries, cosmeceuticals, beauty aids, insect 4607-01

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- 7 repellents, personal hygiene and cleansing products applied to the body, including the skin, hair, scalp, and nails of humans and animals.

[0029] As used herein, the term "(meth)acrylic" acid and "(meth)acrylate" are meant to include the corresponding methyl derivatives of acrylic acid and the corresponding alkyl acrylate. For example, "(meth)acrylic)" acid refers to acrylic acid and/or methacrylic acid and "(meth)acrylate" refers to alkyl acrylate and/or alkyl methacrylate.

[0030] Here, as well as elsewhere in the specification and claims, individual numerical values (including carbon atom numerical values), or limits, can be combined to form additional non-disclosed and/or non-stated ranges.

[0031] The headings provided herein serve to illustrate, but not to limit the disclosed technology in any way or manner.

[0032] In addition to the foregoing ingredients, the cleansing compositions can include other optional adjuncts conventionally used surfactant-based cleansing compositions. These include, for example, one or more emollients, one or more humectants, one or more preservatives, one or more viscosity adjusting agents, one or more skin conditioning agents, one or more hair conditioning agents, one or more antibacterial agents, one or more antioxidants, one or more fragrances, one or more colorants, one or more chelating (sequestering) agents and one or more preservatives. These optional materials are described in more detail below.

[0033] The selection and the amounts of the forgoing ingredients are dependent upon the desired liquid cleansing product of the disclosed technology. For example, a hand cleanser, body wash, shampoo, and facial cleanser can contain different ingredients as well as varying amounts of the same ingredient. The choice and amount of ingredients in formulated compositions of the technology will vary depending on the product and its function, as is well known to those skilled in the formulation arts.

[0034] While overlapping weight ranges for the various ingredients that make up the cleansing composition will be expressed for various embodiments of the disclosed technology, it should be readily apparent that the specific amount of each component in the composition will be selected from its disclosed range 4607-01

WO 2020/131678 PCT/US2019/066498 8 such that the desired amount of each component will be adjusted so that the sum of all components in the liquid composition totals 100 wt.%.

Acrylic Copolymer

[0035] The acrylic copolymer component of the disclosed technology is prepared from a monomer mixture comprising three polymerizable monomeric components. The first monomeric component is selected from one or more unsaturated carboxylic acid containing monomers and salts thereof having a total of from about 3 to about 10 carbon atoms. Examples of such monomers include but are not limited to acrylic acid, methacrylic acid, itaconic acid, fumaric acid, crotonic acid, maleic acid, or aconitic acid. Moreover, half esters of polyacids, such as maleic acid, fumaric acid, itaconic acid, or aconitic acid and the like with Ci to C₄ alkanols can also be used, particularly if it is used in minor amounts in combination with acrylic acid or methacrylic acid. Salts of the foregoing monomers (e.g., sodium and potassium) can be employed.

[0036] The amounts of such carboxylic acid monomers is generally from about 20% to 80% by wt. in one aspect, from about 25% to about 70% by wt. in another aspect and from about 35% to about 65% by wt. in a further aspect, based upon the total wt. of the monomers.

[0037] The second monomeric component is selected from one or more vinyl monomers represented by the formulae:

1 ) CH₂=CXY,

where X is H and Y is -C(0)OR, -CehUR', -CN, -C(0)NH₂, -Cl,

-NC₄H₆0, -NH(CH₂)₃C(0)0H, -NHC(0)CH₃, -C(0)NHC(CH₃)₃,

-C(0)N(CH₃)₂,

or X is CHs and Y is -C(0)OR, -CehUR, -CN or -CH=CH₂;

or X is Cl and Y is Cl, and

R is C1-C18 alkyl, or hydroxy C₂-Ci8 alkyl,

R' is H or C1-C18 alkyl;

2) CH₂=CH0C(0)R¹,

where R¹ is C1-C18 alkyl; or

3) CH₂=CH₂ or CH₂=CHCH₃. 4607-01

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[0038] Typical of such vinyl monomers or mixture of monomers are the various acrylate or hydroxy acrylate esters wherein the ester portion has from 1 to 10 carbon atoms such as methyl acrylate, ethyl acrylate, n-butyl acrylate, 2-ethylhexyl acrylate, 2-hydroxyethyl acrylate, or various vinyl acetates, or styrene, or vinyl chloride, or vinylidene chloride, or acrylonitrile, acrylamide, N,N,-dimethylacrylamide, t-butyl-acrylamide, and their methacrylate analogs.

[0039] The amount of such non-acid vinyl monomers is generally from about 80% to about 15% by wt. in one aspect, from about 75% to about 25% by wt. in another aspect, and from about 65% to about 35% by wt. in a further aspect based upon the total wt. of the monomers.

[0040] The third monomeric component forming the acrylic emulsion polymer is one or more polyunsaturated crosslinking monomers. Monomeric unsaturated compounds carrying a reactive group that can cause a formed copolymer to be crosslinked before, during, or after polymerization has taken place can also be used.

[0041] The polyunsaturated compound is utilized to generate either a partially or substantially crosslinked three-dimensional polymeric network. By polyunsaturated is meant that the crosslinking monomer contains at least two polymerizable double bonds that are reactive with the foregoing unsaturated carboxylic acid containing monomers and the vinyl monomers. Examples of such polyunsaturated compounds are the polyalkenyl ethers of sucrose, or polyalcohols; diallylphthalates, divinyl benzene, allyl (meth)acrylate, ethylene glycol di(meth)acrylate, methylene bisacrylamide, trimethylolpropane tri(meth)acrylate, diallyl itaconate, diallyl fumarate, diallyl maleate, zinc (meth)acrylate, derivatives of castor oils or polyols made from ethylenically unsaturated carboxylic acid and the like, glycidyl methacrylate, N-methylol acylamide or N-alkoxymethylacrylamide, alkoxy being Ci to Cie alcohol; hydroxy(meth)acrylate or (meth)acrylate end- capped caprolactones.

[0042] The polyunsaturated crosslinker monomer component can be used in an amount from about 0.01 to about 5% by wt. in one aspect, from about 0.03 to about 3% by wt. in another aspect, and from about 0.05 to about 1 % by wt. in a further aspect, based upon the total wt. of all the monomer components. 4607-01

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[0043] In one aspect, the acrylic copolymer of the disclosed technology can be prepared by emulsion polymerization techniques. The emulsion polymerization is generally carried out at a pH of from about 2.5 to about 5.0, with the at least three essentially ethylenically unsaturated components set forth above. None of these monomers are an associative monomer which is a copolymerizable surfactant capable of nonspecific hydrophobic association similar to those of conventional surfactants.

[0044] The acrylic copolymers of the present technology can be prepared by any conventional manner such as set forth in U.S. Patent No. 4,138,380, or U.S. Patent No. 4, 1 10,291 which are hereby fully incorporated by reference. Generally, one or more monomers of the above noted carboxylic acid monomers, vinyl monomers, and polyunsaturated monomers are added to a reaction vessel which contains water therein. Suitable amounts of conventional or typical emulsion polymerization surfactants such as sodium lauryl sulfate are added as well as emulsion type initiators, for example sodium or potassium persulfate, redox initiator, and the like. The reaction vessel can also contain a chain transfer agent. The temperature is then increased from about 60°C to about 100°C and polymerization commences. Optionally, during the reaction, additional monomers are added over a period of time. Upon completion of the addition of the monomers, polymerization can run to completion generally by adding additional initiator.

[0045] In one aspect of the disclosed technology, the acrylic copolymer is prepared from a monomer composition comprising:

i. about 35% to about 65% by weight of acrylic acid, methacrylic acid, or combinations thereof;

ii. about 65% to about 35% by weight of at least one Ci to Cs alkyl ester of acrylic acid or methacrylic acid; and

iii. about 0.03% to about 3% by weight of at least one polyunsaturated crosslinker monomer.

[0046] In one aspect of the disclosed technology, the acrylic copolymer is an emulsion polymer prepared by emulsion polymerizing a monomer composition comprising: 4607-01

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- 1 1 i. about 35% to about 65% by weight of acrylic acid, methacrylic acid, or combinations thereof;

ii. about 65% to about 35% by weight of at least one monomer selected from ethyl (meth)acrylate, butyl (meth)acrylate, and mixtures thereof; and

iii. about 0.03% to about 3% by weight of at least one polyunsaturated crosslinker monomer.

[0047] In one aspect, the acrylic copolymer is prepared from (meth)acrylic acid, a C1 -C4 alkyl (meth)acrylate, and a polyunsaturated crosslinking monomer.

[0048] In one aspect, the acrylic copolymer is prepared from methacrylic acid, a C1 -C4 alkyl (meth)acrylate selected from at least one of methyl acrylate, ethyl acrylate and butyl acrylate, and a polyunsaturated crosslinking monomer.

[0049] In one embodiment, the acrylic copolymer suitable for use in the liquid cleanser of the disclosed technology is commercially available from Lubrizol Advanced Materials, Inc., Cleveland, Ohio and is marketed under the tradename Carbopol^® Aqua SF-1. Carbopol Aqua SF-1 polymer is an alkali-swellable acrylic emulsion polymer composition containing approximately 30% by wt. polymer solids. The polymer is a branched to lightly crosslinked copolymer made from at least one pH sensitive first monomer selected from acrylic acid and/or methacrylic acid and at least one second monomer selected from a Ci to Cs alkyl ester of acrylic acid or methacrylic acid, and a third polyunsaturated crosslinking monomer.

[0050] The amount of the acrylic copolymer employed in the composition in accordance with the present technology generally ranges from about 0.25 to about 5 wt.%, or from about 0.3 to about 4.5 wt.%, or from about 0.5 to about 4 wt.%, or from about 0.6 to about 3.6 wt.%, or from about 1 to about 3 wt.% of active (neat) polymer solids based upon the total weight of the composition.

Cationic Polymer

[0051] In one aspect, a cationic polymer is defined as a polymer containing at least one monomer residue that contains a positive charge or can be made to contain a positive charge (e.g., protonated) under conditions of end-product use.

[0052] In one aspect, the cationic polymer may be selected from the group consisting of cationic or amphoteric polysaccharides, polyethyleneimine and its 4607-01

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- 12 derivatives, a synthetic polymer made by polymerizing one or more cationic monomers selected from the group consisting of N,N- dialkylaminoalkyl acrylate, N,N-dialkylaminoalkyl methacrylate, N,N-dialkylaminoalkyl acrylamide, N,N- dialkylaminoalkylmethacrylamide, quaternized N, N dialkylaminoalkyl acrylate quaternized N,N-dialkylaminoalkyl methacrylate, quaternized N,N-dialkylaminoalkyl acrylamide, quaternized N,N-dialkylaminoalkylmethacrylamide,

Methacryloamidopropyl-pentamethyl-l,3-propylene-2-ol-ammonium dichloride, N,N,N,N',N',N",N"-heptamethyl-N"-3-(l- oxo-2-methyl-2- propenyl)aminopropyl-9- oxo-8-azo-decane-l,4, 10-triammonium trichloride, vinylamine and its derivatives, allylamine and its derivatives, vinyl imidazole, quaternized vinyl imidazole and diallyl dialkyl ammonium chloride, methacryloyloxyethyl trimethyl ammonium methylsulfate, and combinations thereof. The cationic polymer may optionally comprise a second monomer selected from the group consisting of acrylamide, N, N-dialkyl acrylamide, methacrylamide, N,N-dialkylmethacrylamide, C1-C12 alkyl acrylate, C1-C12 hydroxyalkyl acrylate, polyalkylene glyol acrylate, C1-C12 alkyl methacrylate, C1-C12 hydroxyalkyl methacrylate, polyalkylene glycol methacrylate, vinyl acetate, vinyl alcohol, vinyl formamide, vinyl acetamide, vinyl alkyl ether, vinyl pyridine, vinyl pyrrolidone, vinyl imidazole, vinyl caprolactam, and derivatives, acrylic acid, methacrylic acid, maleic acid, vinyl sulfonic acid, styrene sulfonic acid, acrylamidopropylmethane sulfonic acid (AMPS^® monomer) and their salts. The polymer may be a terpolymer prepared from more than two monomers. The polymer may optionally be branched or cross-linked by using branching and/or crosslinking agents including, but not limited to, ethylene glycoldiacrylate divinylbenzene, and butadiene. In one aspect, the cationic polymer may include those produced by polymerization of ethylenically unsaturated monomers using a suitable initiator or catalyst, such as those disclosed in WO 00/56849 and US 6,642,200. In one aspect, the cationic polymer may comprise charge neutralizing anions such that the overall polymer is neutral under ambient conditions. Suitable counter ions include (in addition to anionic species generated during use) chloride, bromide, sulfate, methylsulfate, sulfonate, methylsulfonate, carbonate, bicarbonate, formate, acetate, citrate, nitrate, and mixtures thereof. 4607-01

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[0053] In one aspect, the cationic polymer may be selected from the group consisting of poly(acrylamide-co-diallyldimethylammonium chloride), poly(acrylamide-co-methacryloyloxyethyl trimethylammonium methylsulfate) poly(acrylamide-co-methacrylamidopropyltrimethyl ammonium chloride), poly(acrylamide-co-N,N-dimethyl aminoethyl acrylate) and its quaternized derivatives, poly(acrylamide-co-N,N-dimethyl aminoethyl methacrylate) and its quaternized derivative, poly(hydroxyethylacrylate-co-dimethyl aminoethyl methacrylate), poly(hydroxpropylacrylate-co-dimethyl aminoethyl methacrylate), poly(hydroxpropylacrylate-co-methacrylamidopropyltrimethylammonium chloride), poly(acrylamide-co-diallyldimethylammonium chloride-co-acrylic acid), poly(diallyldimethylammonium chloride-co-acrylic acid), poly(acrylamide-co- methacrylamidopropyltrimethyl ammonium chloride-co-acrylic acid), poly(diallyldimethyl ammonium chloride), poly(methyl acrylate-co- methacrylamidopropyltrimethyl ammonium chloride-co-acrylic acid), poly(vinylpyrrolidone-co-dimethylaminoethyl methacrylate), poly(ethyl methacrylate-co-quaternized dimethylaminoethyl methacrylate), poly(ethyl methacrylate-co- oleyl methacrylate-co-diethylaminoethyl methacrylate), poly(diallyldimethylammonium chloride-co-acrylic acid), poly(vinyl pyrrolidone-co- quaternized vinyl imidazole) and poly(acrylamide-co-methacrylamidopropyl- pentamethyl-l,3-propylene-2-ol-ammonium dichloride).

[0054] The foregoing cationic polymers may be further classified by their INCI (International Nomenclature of Cosmetic Ingredients) names as Polyquaternium-1 , Polyquaternium-5, Polyquaternium-6, Polyquaternium-7, Polyquaternium-8, Polyquaternium-1 1 , Polyquaternium-14, Polyquaternium-22, Polyquaternium-28, Polyquaternium-30, Polyquaternium-32, Polyquaternium-33, Polyquaternium-39, Polyquaternium-47 and Polyquaternium-53.

[0055] The cationic polymer may include natural polysaccharides that have been cationically and/or amphoterically modified. Representative cationically or amphoterically modified polysaccharides include those selected from the group consisting of cationic and amphoteric cellulose ethers; cationic or amphoteric galactomannans, such as cationic guar gum, cationic locust bean gum and cationic cassia gum; chitosan; cationic and amphoteric starch; and combinations thereof. 4607-01

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These polymers may be further classified by their INCI names as Polyquarternium- 10, Polyquaternium-24, Polyquaternium-29, Guar Hydroxypropyltrimonium Chloride, Cassia Hydroxypropyltrimonium Chloride and Starch Hydroxypropyltrimonium Chloride.

[0056] In one aspect, the cationic polymer may have a cationic charge density of from about 0.005 to about 23, or from about 0.01 to about 12, or from about 0.1 to about 7 milliequivalents/g, at the pH of the intended use of the composition. For amine-containing polymers, wherein the charge density depends on the pH of the composition, charge density is measured at the intended use pH of the product. Such pH will generally range from about 2 to about 1 1 , more generally from about 2.5 to about 9.5. Charge density is calculated by dividing the number of net charges per repeating unit by the molecular weight of the repeating unit.

[0057] In one aspect, the cationic polymer may have a weight average molecular weight (Mw) of from about 500 to about 5,000,000, or from about 50,000 to about 2,000,000, or from about 100,000 to about 1 ,600,000, or from about 200,000 to about 1 ,200,000 Daltons as determined by size exclusion chromatography relative to polyethyleneoxide standards with Rl detection. The cationic polymers may also range in both molecular weight and charge density. In one aspect, the cationic polymer may have a charge density of from about 0.05 meq/g to about 12 meq/g, or from about 0.3 to about 6 meq/q, or from about 0.5 to about 4 meq/g at a pH of from about pH 3 to about pH 12. In one aspect, the one or more cationic polymer may have a weight average molecular weight of 75,000 Daltons to about 2,500,000 Daltons and a charge density from about 0.1 meq/g to about 12.

[0058] Non-limiting examples of commercially available cationic polymers useful in the present technology are marketed under the Merquat™ tradename by Lubrizol Advanced Materials, Inc., Cleveland, Ohio, under product designations 100, 106, 280, 280NP, 281 , 295, 550, 550PR, S, 75PR, 740, 2001 , 2001 N, 2003PR, 2220, Plus 3330, 3330 PR, Plus 3331 , 3330DRY, and 3940.

[0059] The amount of cationic polymer utilized in the compositions of the disclosed technology range from about 0.05 to about 2 wt.%, or from about 0.1 to 4607-01

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- 15 - about 0.5 wt.%, or from about 0.2 to about 0.4 wt.%, based on the total weight of the composition).

Surfactant Chassis

[0060] In one aspect, the surfactant chassis utilized in the method of the present technology comprises at least one anionic surfactant in optional combination with at least one amphoteric surfactant. In one aspect, the anionic surfactant is selected from an alkyl ether sulfate (ethoxylated surfactant), an alkyl sulfate, an alpha-olefin sulfonate, an amino acid derived surfactant, and mixtures thereof.

[0061] In one aspect of the disclosed technology, the anionic surfactant is selected from the alkali metal, ammonium or alkanolamine salt of an alkyl ether sulfate having from about 8 to about 22 carbon atoms in the alkyl moiety, or from about 10 to about 18 carbon atoms, or from about 12 to about 16 carbon atoms. The alkyl ether sulfates may contain an average of from about 0.5 to about 10 ethylene oxide units (moles) per molecule, or from about 1 to about 7 ethylene oxide units, or from about 1 to about 5 ethylene oxide units, or from about 1 to about 3 ethylene oxide units.

[0062] In one aspect the alkyl ether sulfates conform to the formula:

wherein R’ is a Cs to C22 alkyl group, M is an alkali metal (e.g., sodium, potassium, lithium), ammonium or alkanolammonium counter cation moiety, and n ranges from about 1 to about 7, or from about 2 to about 5, or from about 3 to about 4.

[0063] Non-limiting examples of suitable alkyl ether sulfate salts include, but are not limited to, laureth sulfate (i.e. , lauryl ether sulfate), capryleth sulfate, capreth sulfate, pareth sulfate (C12-C13 pareth sulfate, C12-C14 pareth sulfate, C12-C15 pareth sulfate), myreth sulfate, trideceth sulfate, and mixtures thereof (ethoxylated with an average of 1 to 7 moles of ethylene oxide). In one aspect, 4607-01

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- 16 - the alkyl ether sulfate surfactant comprises sodium laureth sulfate (SLES) containing and average of 1 , 2, or 3 moles of ethylene oxide, and mixtures thereof.

[0064] In one aspect, the anionic surfactant may be an alkyl sulfate salt, wherein the counter ion is selected from alkali metal (e.g., sodium, potassium, lithium), ammonium or alkanolammonium cations. The alkyl sulfates have alkyl groups that contain from about 8 to about 26 carbon atoms, or from about 10 to about 22 carbon atoms, or from about 12 to about 18 carbon atoms. The alkyl groups can be linear or branched. In one aspect the alkyl sulfates conform to the formula:

R"— 0S0₃ ⁺M wherein R’ is a Cs to C26 alkyl radical, and M is an alkali metal (e.g., sodium, potassium, lithium), ammonium or alkanolammonium counter cation moiety. In one aspect, the alkyl substituent is linear, i.e. , normal alkyl, however, branched chain alkyl sulfonates can be employed. The alkyl, substituent may be terminally sulfonated or the sulfonation can occur on any carbon atom along the alkyl chain, i.e., it may be a secondary sulfate. In one aspect, the alkyl sulfate salt is the alkali metal salt (e.g., sodium, potassium, lithium), ammonium or alkanolammonium alkyl sulfate. In one aspect, the alkyl sulfate surfactant is selected from the alkali metal (e.g., sodium, potassium, lithium), ammonium or alkanolammonium salts of ethylhexyl sulfate, decyl sulfate, lauryl sulfate, tridecyl sulfate, myristyl sulfate, cetyl sulfate, cetearyl sulfate, and stearyl sulfate. In one aspect the alkyl sulfate surfactant is sodium lauryl sulfate (SLS).

[0065] In one aspect of the disclosed technology, the anionic surfactant may be an alpha-olefin sulfonate or its salt. Alpha-olefin sulfonates are reaction products formed by sulfonating an alpha-olefin which has been synthesized by either oligomerization of ethylene or via thermo-cracking of paraffin wax. Alpha- olefin sulfonates generally are comprised of a major proportion of sodium 2,3- alkenylsulfonate and a minor proportion of sodium 3-hydroxy-alkanesulfonate of the formulas: 4607-01

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- 17 -

R'" - CH=CH— CH₂ - S0₃ M⁺ and

wherein R’” is a linear or branched Cs to C20 alkyl radical, or C14 to C18, or C16 to C18; and M is a counter cation moiety selected from an alkali metal (e.g. sodium, potassium, lithium), ammonium and alkanolammonium. In most commercially available alpha-olefin surfactants R’” can be a blend of C14 to C16 and/or C16 to C18 alkyl groups.

[0066] In one aspect of the disclosed technology, the anionic surfactant may be selected from an alkyl isethionate of the formula:

R-i - 0-CH₂— CH₂-S0₃ M⁺ wherein Ri is a saturated or unsaturated, straight or branched acyl or alkyl chain containing 7 to 28 carbon atoms, or 8 to 22 carbon atoms, or 10 to 18 carbon atoms, or 12 to 16 carbon atoms, and M is an alkali metal (e.g., sodium, potassium, lithium), ammonium or alkanolammonium counter cation moiety.

[0067] Non-limiting examples of acyl and alkyl isethionates lauroyl methyl isethionate, ammonium cocoyl isethionate, sodium cocoyl isethionate, sodium hydrogenated cocoyl methyl isethionate, sodium lauroyl isethionate, sodium myristoyl isethionate, sodium oleoyl isethionate, sodium oleoyl methyl isethionate, sodium stearoyl methyl isethionate, sodium isethionate, dibromopropamidine diisethionate, hexamidine diisethionate, sodium methyl isethionate, and combinations thereof.

[0068] In one aspect of the disclosed technology the anionic surfactant is derived from an amino acid. The amino acid derived surfactants are selected from a N-acyl amino acid of the formula: 4607-01

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- 18 -

wherein Ri is a saturated or unsaturated, straight or branched alkyl chain containing 7 to 17 carbon atoms, R2 is H or a methyl group, R3 is H, COO M⁺, CH2COO M⁺ or COOH, n is 0 to 2, X is COO or SO3 and M independently represents H, sodium, potassium, ammonium or triethanolammonium.

[0069] In one aspect, the N-acyl amino acid surfactants represented by the formula immediately above are derived from propionates, taurates, glutamates, alanine, alaninates, sacosinates, aspartates, glycinates, and mixtures thereof.

[0070] Representative propionate surfactants conform to the formula:

wherein Ri is a saturated or unsaturated, straight or branched alkyl chain containing 7 to 17, or 9 to 13 carbon atoms, R2 is H or methyl, and M is H, sodium, potassium, ammonium or triethanolammonium.

[0071] Non-limiting examples of propionate surfactants are sodium lauroyl methylaminopropionate, TEA-lauroyl methylaminopropionate, and sodium cocoyl methylaminopropionate.

[0072] Representative taurate surfactants conform to the formula:

wherein Ri is a saturated or unsaturated, straight or branched alkyl chain containing 7 to 17, or 9 to 13 carbon atoms, R2 is H or methyl, and M is H, sodium, potassium, ammonium or triethanolammonium. 4607-01

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- 19 -

[0073] Non-limiting examples of taurate surfactants are potassium cocoyl taurate, potassium methyl cocoyl taurate, sodium caproyl methyl taurate, sodium cocoyl taurate, sodium lauroyl taurate, sodium methyl cocoyl taurate, sodium methyl lauroyl taurate, sodium methyl myristoyl taurate, sodium methyl oleoyl taurate, sodium methyl palmitoyl taurate, sodium methyl stearoyl taurate, and mixtures thereof.

[0074] Representative glutamate surfactants conform to the formula:

wherein Ri is a saturated or unsaturated, straight or branched alkyl chain containing 7 to 17 carbon atoms, or 9 to 13 carbon atoms, n is 0 to 2, and M independently is H, sodium, potassium, ammonium or triethanolammonium.

[0075] Non-limiting examples of glutamate surfactants are di-potassium capryloyl glutamate, di-potassium undecylenoyl glutamate, di-sodium capryloyl glutamate, di-sodium cocoyl glutamate, di-sodium lauroyl glutamate, di-sodium stearoyl glutamate, di-sodium undecylenoyl glutamate, potassium capryloyl glutamate, potassium cocoyl glutamate, potassium lauroyl glutamate, potassium myristoyl glutamate, TEA-cocoyl glutamate, potassium stearoyl glutamate, potassium undecylenoyl glutamate, sodium capryloyl glutamate, sodium cocoyl glutamate, sodium lauroyl glutamate, sodium myristoyl glutamate, sodium olivoyl glutamate, sodium palmitoyl glutamate, sodium stearoyl glutamate, sodium undecylenoyl glutamate, and mixtures thereof.

[0076] Representative alanine and alaninate surfactants conform to the formula:

wherein Ri is a saturated or unsaturated, straight or branched alkyl chain containing 7 to 17 carbon atoms, or 9 to 13 carbon atoms in another aspect, R2 4607-01

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- 20 is H or methyl, and M is H, sodium, potassium, ammonium or triethanolammonium.

[0077] Non-limiting examples of alanine and alaninate surfactants are cocoyl methyl b-alanine, lauroyl b-alanine, lauroyl methyl b-alanine, myristoyl b-alanine, potassium lauroyl methyl b-alanine, sodium cocoyl alaninate, sodium cocoyl methyl b-alanine, sodium myristoyl methyl b-alanine, and mixtures thereof.

[0078] Representative glycinate surfactants conform to the formula:

wherein Ri is a saturated or unsaturated, straight or branched alkyl chain containing 7 to 17 carbon atoms, or 9 to 13 carbon atoms, and M is H, sodium, potassium, ammonium or triethanolammonium.

[0079] Non-limiting examples of glycinate surfactants are sodium palmitoyl glycinate, sodium lauroyl glycinate, sodium cocoyl glycinate, sodium myristoyl glycinate, potassium lauroyl glycinate, potassium cocoyl glycinate, sodium stearoyl glycinate, and mixtures thereof.

[0080] Representative sarcosinate surfactants conform to the formula:

wherein Ri is a saturated or unsaturated, straight or branched alkyl chain containing 7 to 17 carbon atoms, or 9 to 13 carbon atoms, and M is H, sodium, potassium, ammonium or triethanolamine.

[0081] Non-limiting examples of sarcosinate surfactants are potassium lauroyl sarcosinate, TEA-lauroyl sarcosinate, potassium cocoyl sarcosinate, sodium cocoyl sarcosinate, sodium lauroyl sarcosinate, sodium myristoyl sarcosinate, sodium palmitoyl sarcosinate, and mixtures thereof.

[0082] Representative aspartate surfactants conform to the formula: 4607-01

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wherein Ri is a saturated or unsaturated, straight or branched alkyl chain containing 7 to 17 carbon atoms, or 9 to 13 carbon atoms, and M independently is H, sodium, potassium, ammonium or triethanolammonium.

[0083] Non-limiting examples of aspartate surfactants are sodium lauroyl aspartate, sodium myristoyl aspartate, sodium cocoyl aspartate, sodium caproyl aspartate, di-sodium lauroyl aspartate, di-sodium myristoyl aspartate, di-sodium cocoyl aspartate, di-sodium caproyl aspartate, potassium lauroyl aspartate, potassium myristoyl aspartate, potassium cocoyl aspartate, potassium caproyl aspartate, di-potassium lauroyl aspartate, di-potassium myristoyl aspartate, di potassium cocoyl aspartate, di-potassium caproyl aspartate, and mixtures thereof.

[0084] In one aspect of the disclosed technology, the anionic surfactant may be a PEG fatty acid amide MEA sulfate (ethoxylated surfactant). Representative surfactants of this type conform to the formula:

wherein Ri is a straight or branched alkyl chain containing 7 to 19 carbon atoms, or 9 to 16 carbon atoms, and M independently is sodium, potassium, ammonium or triethanolammonium, and n is 1 to 5.

[0085] Non-limiting examples of PEG fatty acid amide MEA sulfate surfactants are Sodium PEG-4 lauramide Sulfate, TEA PEG-3-cocamide sulfate, sodium PEG-3-cocamide sulfate and sodium PEG-4-cocamide sulfate. 4607-01

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[0086] In one aspect of the disclosed technology, the anionic surfactant may be an alkyl sulfosuccinate or an alkyl ether sulfosuccinate (ethoxylated surfactant) of the formula:

wherein Ri is a saturated or unsaturated, straight or branched alkyl chain containing 7 to 22 carbon atoms, or 9 to 18 carbon atoms, or 10 to 16 carbon atoms, and M independently is sodium, potassium, ammonium or triethanolammonium, and n is 0 or 1 to 12. When n is 0, the formula represents an alkyl sulfosuccinate, and when n is at least 1 , the formula represents an alkyl ether sulfosuccinate.

[0087] Non-limiting examples of alkyl sulfosuccinates are disodium lauryl sulfosuccinate, diammonium lauryl sulfosuccinate, dipotassium lauryl sulfosuccinate, disodium cetearyl sulfosuccinate, disodium cetyl sulfosuccinate, disodium coco-sulfosuccinate, disodium isodecyl sulfosuccinate, disodium tridecyl sulfosuccinate, disodium stearyl sulfosuccinate disodium isostearyl sulfosuccinate, and disodium oleyl sulfosuccinate.

[0088] Non-limiting examples of alkyl ether sulfosuccinates are disodium laureth sulfosuccinate, disodium laureth-6 sulfosuccinate, disodium laureth-9 sulfosuccinate, disodium laureth-12 sulfosuccinate, disodium deceth-5 sulfosuccinate, disodium deceth-6 sulfosuccinate, disodium C12-15 pareth sulfosuccinate, disodium C12-C14 pareth-1 sulfosuccinate, disodium C12-C14 pareth-2 sulfosuccinate, disodium coceth-3 sulfosuccinate, disodium laneth-5 sulfosuccinate, and disodium oleth-3 sulfosuccinate.

[0089] In one aspect of the disclosed technology, the anionic surfactant may be an alkyl ether carboxylate (ethoxylated surfactant) of the formula: 4607-01

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- 23 -

wherein Ri is a saturated or unsaturated, straight or branched alkyl chain containing 7 to 22 carbon atoms, or 9 to 18 carbon atoms, or 10 to 16 carbon atoms, and M independently is H, sodium, potassium, ammonium or triethanolammonium, and n is 1 to 15.

[0090] Non-limiting examples of alkyl ether carboxylate surfactants are sodium laureth-3 carboxylate, sodium laureth-4 carboxylate, sodium laureth-5 carboxylate, sodium laureth-6 carboxylate, laureth-6 carboxylic acid, laureth-11 carboxylic acid, sodium laureth-11 carboxylate, sodium laureth-13 carboxylate, sodium trideceth-4 carboxylate, sodium trideceth-7 carboxylate, sodium peg-7 olive oil carboxylate, sodium C12-13 pareth-8 carboxylate, and sodium C12-15 pareth-8 carboxylate.

[0091] The amount of the anionic surfactant contained in the compositions of the disclosed technology can from about 1 to about 20 wt.%, or from about 5 to about 15 wt.%, or from about 9 to about 12 wt.%, based on the weight of the total composition.

Amphoteric Surfactant

[0092] An optional amphoteric surfactant can be included in the surfactant chassis of the disclosed technology. The term“amphoteric surfactant” as used herein, is also intended to encompass zwitterionic surfactants, which are well known to formulators skilled in the art as a subset of amphoteric surfactants. Nonlimiting examples of amphoteric surfactants are disclosed McCutcheon's Detergents and Emulsifiers, North American Edition, supra, and McCutcheon's, Functional Materials, North American Edition, supra; both of which are incorporated by reference herein in their entirety. Suitable examples of amphoteric surfactants include, but are not limited to, betaine surfactants, sultaine surfactants, and alkyl amphocarboxylate surfactants.

[0093] In one aspect of the present technology, suitable alkyl amphocarboxylate surfactants include (mono- and di-) amphocarboxylates, e.g., 4607-01

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- 24 - sodium cocoamphoacetate, sodium lauroamphoacetate, sodium capryloamphoacetate, disodium cocoamphodiacetate, disodium lauroamphodiacetate, disodium caprylamphodiacetate, disodium capryloamphodiacetate, disodium cocoamphodipropionate, disodium lauroamphodipropionate, disodium caprylamphodipropionate, and disodium capryloamphodipropionate; and mixtures thereof.

[0094] In one aspect of the present technology, suitable amphoteric surfactants include but are not limited to alkyl betaines, e.g., lauryl betaine; alkylamido betaines, e.g., lauramidopropyl betaine, cocam idopropyl betaine (CAPB) and cocohexadecyl dimethylbetaine; as well as alkylhydroxy sultaines, e.g., lauryl hydroxysutlatine and alkylamido hydroxysultaines, e.g., cocam idopropyl hydroxysultaine.

[0095] The foregoing betaines and sultaines are disclosed without a counter ion, as one of ordinary skill in the art will recognize that the under the pH conditions of the compositions containing these surfactants, the surfactants are either electrically neutral by having balanced positive and negative charges, or they contain counter ions such as alkali metal, alkaline earth or ammonium ions as a charge balancing moiety.

[0096] When utilized, the amount of amphoteric surfactant is based on the amount of anionic surfactant employed in the composition. The weight ratio of anionic surfactant to amphoteric surfactant ranges from about 10:1 to about 1 :2, or 9:1 , or about 8:1 , or about 7:1 , or about 6:1 , or about 5:1 , or about 4.5:1 , or about 4:1 , or about 3:1 , or about 2:1 or about 1 :1 , or about 1 :2 (based on the amount of active material).

[0097] In one aspect, the surfactant base comprises a mixture of sodium laureth sulfate (with 1 to 3 moles of ethoxylation) and cocam idopropyl betaine.

Water

[0098] Water is also an ingredient in the compositions according to embodiments of the disclosed technology. In one aspect, the liquid cleansing compositions described herein are in the form of non-emulsion liquids in which water is the principal carrier/diluent/carrier. Considering the desired amounts 4607-01

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- 25 -

(wt.%) of the other active components utilized to formulate the compositions of the disclosed technology, the quantity of water employed in the compositions will always correspond to a weight percentage needed to bring the total weight of the composition to 100 (i.e. , quantity sufficient (q.s.) to 100). In another aspect, the amount of water can range from about 25 to about 89.5 wt.%, in a further aspect from about 35 to about 85 wt.%, in a still further aspect from about 40 to about 80 wt.%, in an additional aspect from about 40 to about 75 wt.%, in a still additional aspect from about 50 to about 70 wt.%, and a further additional aspect from about 55 to about 65 wt.%, based on the total weight of the composition. pH Adjusting Agents

[0099] In one aspect, the pH of the cleansing compositions of the disclosed technology can range from about 4 to about 10.5, or about 5 to about 8, or about 5.5 to about 6.5. A sufficient amount of a pH adjusting agent (base and/or acid) can be added to the compositions of the disclosed technology to attain the desired pH.

[00100] Many types of alkaline (basic) pH adjusting agents can be used, including inorganic and organic bases, and combinations thereof. Examples of inorganic bases include but are not limited to the ammonium and alkali metal hydroxides (especially sodium and potassium), and alkali metal salts of inorganic acids, such as sodium borate (borax), sodium phosphate, sodium pyrophosphate, and the like; and mixtures thereof. Examples of organic bases include, but are not limited to, triethanolamine (TEA), diisopropanolamine, triisopropanolamine, aminomethyl propanol, dodecylamine, cocamine, oleamine, morpholine, triamylamine, triethylamine, tetrakis(hydroxypropyl)ethylenediamine, L-arginine, aminomethyl propanol, tromethamine (2-amino 2-hydroxymethyl-1 ,3- propanediol), and PEG-15 cocamine.

[00101] In one aspect, the acidic pH adjusting agents are selected from an organic acid, such as citric acid, acetic acid, alpha-hydroxy acids, beta-hydroxy acids, salicylic acid, lactic acid, fumaric acid, glutamic acid, glycolic acid, tartaric acid, natural fruit acids, or combinations thereof. In addition, inorganic acids, for example, hydrochloric acid, nitric acid, sulfuric acid, sodium bisulfate, sulfamic 4607-01

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- 26 acid, phosphoric acid, and combinations thereof can be utilized. Mixtures of organic acids and inorganic acids are also contemplated.

[00102] In one aspect, a basic pH adjusting agent is added to the composition in an amount sufficient to attain the desired target pH for the composition. In one aspect, an acidic pH adjusting agent is added to the composition in an amount sufficient to attain the desired target pH for the composition. In one aspect, a basic pH adjusting agent is added to the composition, followed by the addition of an acidic pH adjusting agent to attain the desired target pH for the composition.

Humectants

[00103] The composition of the disclosed technology optionally includes at least one humectant. Humectants are defined as materials that absorb or release water vapor, depending on the relative humidity of the environment, (Harry's Cosmeticology, Chemical Publishing Company Inc., 1982 p. 266). Suitable humectants that can be included in the compositions include, but are not limited to, allantoin; pyrrolidonecarboxylic acid and its salts; hyaluronic acid and salts thereof; sorbic acid and salts thereof; urea, lysine, arginine, cystine, guanidine, and other amino acids; polyhydroxy alcohols such as glycerin, propylene glycol, hexylene glycol, hexanetriol, ethoxydiglyco!, dimethicone copolyol, and sorbitol, and the esters thereof; polyethylene glycol; glycolic acid and g!yco!ate salts (e.g. ammonium and quaternary alkyl ammonium); chitosan; aloe-vera extracts; algae extract; honey and derivatives thereof; inositol; lactic acid and lactate salts (e.g. ammonium and quaternary alkyl ammonium); sugars and starches; sugar and starch derivatives (e.g. alkoxylated glucose); DL- panthenol; magnesium ascorbyl phosphate, arbutin, kojic acid, !actamide monoethanolamine; acetamide monoethanolamine; and the like, and mixtures thereof. Humectants also include the Cs to Cs diois and triols, such as glycerin, propylene glycol, hexylene glycol, hexanetriol, and the like, and mixtures thereof. Ethoxylated methyl glucose ethers containing an average of 5 to 30 moles of ethoxylation, such as, for example, those available under the INC! names Methyl Glucose-10 and Methyl Glucose-20, are suitable. When utilized, humectants typically comprise from about 1 wt.% to about 10 wt.% of the total weight of the 4607-01

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- 27 - compositions of the disclosed technology. In another aspect the amount can range from about 2 wt.% to about 8 wt. %, and in a further aspect from about 3 wt % to about 5 wt. % of the total weight of the composition.

Emollient

[00104] The compositions of the disclosed technology optionally includes at least one emollient. An emollient is defined as a substance which regulates the rate and quantity of water uptake by the skin (Handbook of Cosmetic Science and Technology, Elsevier Science Publishing, 1993, p. 175). Suitable emollients include mineral oil; vegetable oil; hydrogenated vegetable oil, stearic acid; fatty alcohols such as cetyl alcohol, cetearyl alcohol, myristyl alcohol, behenyl alcohol, and lauryl alcohol, cetyl acetate in acetylated lanolin alcohol, benzoate esters such as C12 to C15 alkyl benzoates, isostearyl benzoate, dicaprylyl maleate, petrolatum, lanolin, coco butter, shea butter, beeswax and esters thereof, ethoxylated fatty alcohol esters such as ceteareth-20, oleth-5, and ceteth-5, alkoxylated fatty acid esters such as polyethylene glycol 400 propoxylated monolaurate, avocado oil or glycerides, sesame oil or glycerides, safflower oil or glycerides, sunflower oil or glycerides, and other mono-, di-, and triglycerides of natural vegetable and botanical oils, such as, for example, caprylic triglyceride, capric triglyceride, caprylic/capric triglyceride, and caprylic/capric/lauric triglyceride, Guerbet esters such as G-20, G-36, G-38, and G-66 marketed by Lubrizol Advanced Materials, Inc., botanical seed oils, volatile silicone oils, non-volatile emollients, and the like; and mixtures thereof.

[00105] Suitable non-volatile emollients include fatty acid and fatty alcohol esters, highly branched hydrocarbons, and the like, and mixtures thereof. Such fatty acid and fatty alcohol esters include decyl oleate, butyl stearate, octyl stearate, myristyl myristate, octyldodecyl stearoylstearate, octylhydroxystearate, di-isopropyl adipate, isopropyl myristate, isopropyl palmitate, ethyl hexyl palmitate, isodecyl neopentanoate C12 to C15 alcohol benzoate, diethyl hexyl maleate, PPG-14 butyl ether and PPG-2 myristyl ether propionate, cetearyl octanoate, and the like, and mixtures thereof. Suitable highly branched hydrocarbons include isohexadecane and the like, and mixtures thereof. 4607-01

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[00106] Suitable volatile emollients include the volatile silicones, such as cyclic or linear polydimethylsiloxanes, and the like. The number of silicon atoms in cyclic silicones can range from about 3 to about 7 in one aspect of the technology, and in another aspect from 4 to 5. Exemplary volatile silicones, both cyclic and linear, are available from Dow Corning Corporation as Dow Corning 344, 345, and 200. The linear volatile silicones typically have viscosities of less than about 5 cP at 25°C, while the cyclic volatile silicones typically have viscosities of less than about 10 cP at 25°C. "Volatile" means that the silicone has a measurable vapor pressure. A description of volatile silicones can be found in Todd and Byers, "Volatile Silicone Fluids for Cosmetics", Cosmetics and Toiletries, Vol. 91 , January 1976, pp. 27-32.

[00107] Other emollient silicones include polydimethylsi!oxane gums, aminosilicones, phenylsilicones, polydimethyl si!oxane, po!ydiethylsi!oxane, polymethylphenylsiloxane, polydimethylsiloxane gums, polyphenyl methyl siioxane gums, amodimethicone, trimethylsilylamodimethicone, diphenyl- dimethyl po!ysiloxane gums, and the like.

[00108] The emollients, if present (alone or in combination), range from about 1 wt.% to about 15 wt.% in one aspect, from about 2 wt.% to about 10 wt.% in another aspect, and from about 3 wt.% to about 5 wt.% in a further aspect, based of the total weight of the composition.

Other Optional Components

[00109] The compositions of the disclosed technology can contain a variety of other conventional optional components suitable for rendering the cleansing compositions more desirable. Such optional components are well known to those skilled in the art of formulating personal care cleansing compositions and include, but not limited to, one or more preservatives, one or more thickening agents, one or more viscosity adjusting agents, one or more skin conditioners, one or more antibacterial agents, one or more fragrances, one or more colorants, and one or more insoluble materials.

[00110] Suitable preservatives and antimicrobial agents, if present, include polymethoxy bicyclic oxazolidine, methyl paraben, propyl paraben, ethyl 4607-01

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- 29 - paraben, butyl paraben, benzoic acid and the salts of benzoic acid, e.g., sodium benzoate, benzyltriazole, DMDM hydantoin (also known as 1 ,3-dimethyl-5,5- dimethyl hydantoin), imidazolidinyl urea, phenoxyethanol, phenoxyethylparaben, methylisothiazolinone, methylchloroisothiazolinone, benzoisothiazolinone, triclosan, sorbic acid, salicylic acid salts, and the like, and mixtures thereof. Preservatives typically comprise about 0.01 wt. % to about 1.5 wt. % of the total wt. of the personal care compositions of the present technology.

[00111] Suitable auxiliary thickening agents may be any natural and/or synthetic agent (or combination thereof) to obtain enhanced thickening properties. The person skilled in the art will readily select a proper thickening agent(s) and amounts(s) thereof to obtain the desired rheology. Non-limiting examples of natural thickening agents are tree & shrub exudates (karaya gum, tragacanth gum, gum Arabic, gum ghatti), seed extracts (guar gum, cassia gum, locust been gum, tamarind seed), seaweed extracts (carrageenan, alginates, agar), fruit extracts (pectins, waxes), grains & roots (corn starch, potato starch, etc), microbial polysaccharides (Xanthan gum, dextran), modified natural products (cellulose derivatives such as hydropropyl cellulose, methylcellulose, hydroxypropyl methylcellulose, cellulose gum, etc.); and hydrophobically modified ethoxylated methyl glucosides, such as PEG 120 methyl glucose dioleate, PEG-120 methyl glucose trioleate, and PEG-20 methyl glucose sesquistearate, available from Lubrizol Advanced Materials, Inc., under the trade names, Glucamate^™ DOE-120, Glucamate™ LT and VLT, and Glucamate™ SSE-20, respectively, are also suitable as thickening agents. Non-limiting examples of synthetic thickening agents include the polyethylene glycols (PEG) having 5 to 200 glycol units, such as, for example, those available under the INCI names PEG- 6, PEG-8, PEG-12, PEG-20, PEG-30, PEG-32, PEG-75, PEG-90, PEG-100 and PEG-200; acrylic/m ethacrylic acid homopolymers and copolymers, such as, for example, those sold under the trade names Carbopol^® 934, Carbopol 940, Carbopol 941 , Carbopol 980, Carbopol 981 , Carbopol 2984, Carbopol 5984, Carbopol ETD 2050, Carbopol Ultrez 10, Carbopol Ultrez 30 (INCI name: Carbomer); Carbopol 1342, Carbopol 1382, Carbopol ETD 2020, Carbopol Ultrez 20, Carbopol Ultrez 21 , Pemulen™ TR-1 and Pemulen TR-2 4607-01

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(INC! name: Acrylates/Cio-C3o Alkyl Acrylate Crosspolymer); Carbopol Aqua SF- 1 (INCI name: Acrylates Copolymer); manufactured and sold by Lubrizol Advanced Materials, Inc , Cleveland, OH; acrylamide homopolymers and copolymers; polymers prepared from 2-acrylamido-2-methylpropanesulfonic acid (AMPS^® monomer).

[00112] Another class of synthetic thickeners suitable for use includes the hydrophobically modified alkali-swellable emulsion polymers, commonly referred to as (HASE) polymers. Typical HASE polymers are free radical addition polymers polymerized from pH sensitive or hydrophilic monomers (e.g., acrylic acid and/or methacrylic acid, 2-acrylamido-2-methylpropane sulfonic acid), hydrophobic monomers (e.g., C1 -C30 alkyl esters of acrylic acid and/or methacrylic acid, acrylonitrile, styrene), an "associative monomer", and an optional crosslinking monomer. The associative monomer comprises an ethylenically unsaturated polymerizable end group, a non-ionic hydrophilic midsection that is terminated by a hydrophobic end group. The non-ionic hydrophilic midsection comprises a polyoxyalkylene group, e.g., polyethylene oxide, polypropylene oxide, or mixtures of polyethylene oxide/polypropylene oxide segments. The terminal hydrophobic end group is typically a C8-C40 aliphatic moiety. Exemplary aliphatic moieties are selected from linear and branched alkyl substituents, linear and branched alkenyl substituents, carbocyclic substituents, aryl substituents, aralkyl substituents, arylalkyl substituents, and alkylaryl substituents. In one aspect, associative monomers can be prepared by the condensation (e.g., esterification or etherification) of a polyethoxylated and/or polypropoxylated aliphatic alcohol (typically containing a branched or unbranched C8-C40 aliphatic moiety) with an ethylenically unsaturated monomer containing a carboxylic acid group (e.g., acrylic acid, methacrylic acid), an unsaturated cyclic anhydride monomer (e.g., maleic anhydride, itaconic anhydride, citraconic anhydride), a monoethylenically unsaturated monoisocyanate (e.g., a,a-dimethyl-m-isopropenyl benzyl isocyanate) or an ethylenically unsaturated monomer containing a hydroxyl group (e.g., vinyl alcohol, allyl alcohol). Polyethoxylated and/or polypropoxylated aliphatic alcohols are ethylene oxide and/or propylene oxide adducts of a 4607-01

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- 31 - monoalcohol containing the Ce-C4o aliphatic moiety. Non-limiting examples of alcohols containing a Ce-C4o aliphatic moiety are capryl alcohol, iso-octyl alcohol (2-ethyl hexanol), pelargonic alcohol (1 -nonanol), decyl alcohol, lauryl alcohol, myristyl alcohol, cetyl alcohol, cetyl alcohol, cetearyl alcohol (mixture of C16-C18 monoalcohols), stearyl alcohol, isostearyl alcohol, elaidyl alcohol, oleyl alcohol, arachidyl alcohol, behenyl alcohol, lignoceryl alcohol, ceryl alcohol, montanyl alcohol, melissyl, lacceryl alcohol, geddyl alcohol, and C2-C20 alkyl substituted phenols (e.g., nonyl phenol), and the like.

[00113] Exemplary HASE polymers are disclosed in U.S. Patent Nos. 3,657,175; 4,384,096; 4,464,524; 4,801 ,671 ; and 5,292,843, which are herein incorporated by reference. In addition, an extensive review of HASE polymers is found in Gregory D. Shay, Chapter 25, 'Alkali-Swellable and Alkali-Soluble Thickener Technology A Review", Polymers in Aqueous Media - Performance Through Association, Advances in Chemistry Series 223, J. Edward Glass (ed.), ACS, pp. 457-494, Division Polymeric Materials, Washington, DC (1989), the relevant disclosures of which are incorporated herein by reference. Commercially available HASE polymers are sold under the trade names, Aculyn^® 22 (INCI Name: Acrylates/Steareth-20 Methacrylate Copolymer), Aculyn^® 44 (INCI Name: PEG-150/Decyl Alcohol/SMDI Copolymer), Aculyn 46^® (INCI Name: PEG-150/Stearyl Alcohol/SMDI Copolymer), and Aculyn^® 88 (INCI Name: Acrylates/Steareth-20 Methacrylate Crosspolymer) from Rohm & Haas, and Novethix™ L-10 (INCI Name: Acrylates/Beheneth-25 Methacrylate Copolymer) from Lubrizol Advanced Materials, Inc. Other thickeners are commercially available under the INCI designations Ammonium Acryloyldimethyltaurate/VP Copolymer, Ammonium Acryloyl

Dimethyltaurate/Carboxyethyl Acrylate Crosspolymer, and Ammonium Acryloyldimethyltaurate/Beheneth-25 Methacrylate Crosspolymer.

[00114] If utilized, the thickeners can comprise from about 0.01 wt. % to about 5 wt. % of the total weight of the personal care composition in another aspect the amount ranges from about 0.1 wt. % to about 3 wt. %, and in a further aspect from about 0.1 wt. % to about 2.0 wt. % of the total weight of the personal care composition. 4607-01

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[00115] Viscosity adjusting agents are used in cosmetics to enhance the fluidity of products without a significant lowering of the concentration of the active constituents. Suitable viscosity adjusting agents if present include organic and inorganic compounds, and combinations thereof. Examples of organic compounds include ethanol, isopropyl alcohol, sorbitol, propylene glycol, diethylene glycol, triethylene glycol, dimethyl ether, butylene glycol, and the like, and mixtures thereof. Examples of inorganic compounds include sodium chloride, sodium sulfate, potassium chloride, potassium nitrate, and mixtures thereof. If utilized the viscosity adjusting agents typically comprise from about 0.1 wt. % to about 20 wt.% in one aspect, and from about 1 wt.% to about 5 wt.% of the total weight of the composition of the disclosed technology.

[00116] Examples of suitable antibacterial agents which can be used herein include, but are not limited to, 2-hydroxy-4,2',4'-trichlorodiphenylether (TCS), 2,6- dimethyl-4-hydroxychlorobenzene (PCMX),3,4,4'-trichlorocarbanilide (TCC), 3- trifluoromethyl-4,4'-dichlorocarbanilide (TFC), 2,2'-dihydroxy-3,3',5,5',6,6'- hexachlorodiphenylmethane, 2 , 2 ' -d i hyd roxy-3 , 3' , 5 , 5' - tetrachlorodiphenylmethane, 2,2'-dihydroxy-3,3',dibromo-5,5'- dichlorodiphenylmethane, 2-hydroxy4,4'-dichlorodiphenylether, 2-hydroxy-3,5',4- tribromodiphenylether, 1 -hydroxyl-4-methyl-6-(2,4,4-trimethylpentyl)-2(1 H)- pyridinone (Octopirox), salts of 2-pyridinethiol-1 -oxide, salicylic acid, and other organic acids. Other suitable antibacterial agents are described in U.S. Patent. Nos. 3,835,057; 4,714,653; and 6,488,943. The disclosed composition can include from about 0.001 wt.% to about 2 wt.% in one aspect, from about 0.01 wt.% to about 1.5 wt.% in another aspect, and from about 0.1 wt.% to about 1 wt.% in a further aspect of the antibacterial agent(s), based on the total weight of the composition.

[00117] The fragrance substances that can be used in the compositions of the disclosed technology include natural and synthetic fragrances, perfumes, scents, and essences and any other substances and mixtures which emit a fragrance. As the natural fragrances, there are those of vegetable origin, such as oil extracts from flowers (e.g., lily, lavender, rose, jasmine, neroli, ylang-ylang), stems and leaves (geranium, patchouli, petitgrain, peppermint), fruits (aniseed, 4607-01

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- 33 - coriander, fennel, needle juniper), fruit skin (bergamot, lemon, orange, mace), roots angelica, celery, cardamom, costus, iris, sweet flag), woods (pine tree, sandalwood, guaiacum wood, cedar, rosewood, cinnamon), herbs and grasses (tarragon, lemongrass, sage, thyme), needles and twigs (spruce, pine, European red pine, stone pine), and resins and balsam (galbanum, elemi, benzoin, myrrh, frankincense, opopanax), and those of animal origin, such as musk, civet, castoreum, ambergris, or the like, and mixtures thereof.

[00118] Examples of synthetic fragrances and perfumes are the aromatic esters, ethers, aldehydes, ketones, alcohols, and hydrocarbons including, but are not limited to, benzyl acetate, phenoxyethyl isobutylate, p-tert- butylcyclohexyl acetate, linalyl acetate, dimethylbenzylcarbinyl acetate, phenylethyl acetate, linalyl benzoate, benzyl formate, ethylmethylphenyl glycinate, allylcyclohexyl propionate, styralyl propionate, and benzyl salicylate; benzylethyl ether; straight chain alkanals having 8 to 18 carbon atoms, citral, citronellal, citronellyloxyaldehyde, cyclamen aldehyde, hydroxycitronellal, lilial, and bougeonal; ionone compounds, a-isomethyl ionone, and methyl cedryl ketone; anethole, citronellol, eugenol, isoeugenol, geraniol, lavandulol, nerolidol, linalool, phenylethyl alcohol, and terpineol, alpha-pinene, terpenes (e.g., limonene), and balsams, and mixtures thereof.

[00119] The amount of fragrance material(s) that can be utilized will depend on the preference of the skilled formulator. In one aspect, the amount of fragrance material can range from about 0.05 wt.% to about 3 wt. %, in another aspect from about 0.1 wt.% to about 1.5 wt.%, in still another aspect from about 0.3 wt.% to about 1 wt.%, and in a further aspect from about 0.5 wt.% to 0.75 wt.%, based on the weight of the total composition.

[00120] Colorants include water soluble dyes such as copper sulfate, iron sulfate, water-soluble sulfopolyesters, rhodamines, natural dyes, for instance carotene and beetroot juice, methylene blue, caramel, the disodium salt of tartrazine and the disodium salt of fuschin, and mixtures thereof. The amount of colorant(s) employed in the composition will depend on the aesthetic preference of the skilled formulator. 4607-01

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[00121] Insoluble materials include materials that impart pearlescent and other aesthetic visual, sensory and/or beneficial effects to the composition. Some formulations are opacified by deliberately incorporating pearlescent materials therein to achieve a cosmetically attractive pearl-like appearance, known as pearlescence. A detailed discussion of the effect is found in the article "Opacifiers and pearling agents in shampoos" by Hunting, Cosmetic and Toiletries, Vol. 96, pages 65 to 78 (July 1981 ), incorporated herein by reference.

[00122] The pearlescent material includes titanium dioxide coated mica, iron oxide coated mica, ethylene glycol monostearate, ethylene glycol distearate, polyethylene glycol distearate, bismuth oxychloride coated mica, myristyl myristate, guanine, glitter (polyester or metallic), and mixtures thereof. Other pearlescent materials can be found in U.S. Patent No. 4,654,207 and U.S. Patent No. 5,019,376, herein incorporated by reference.

[00123] The amount of the pearlescent material can generally be used in amounts of from about 0.05% to about 10% and desirably from about 0.15% to about 3% by wt. based upon the total wt. of the composition.

[00124] In addition to the above generally insoluble compounds, numerous other optional substantially insoluble compounds which require stabilization can be utilized in the composition. Examples of such other insoluble compounds include titanium dioxide; pumice; calcium carbonate, talc, potato starch, tapioca starch, jojoba beads, polyethylene beads, walnut shells, loofah, apricot seeds; almond meal, corn meal, paraffin, oat bran/oat hulls, gelatin beads, alginate beads, stainless steel fibers, iron oxide pigments, air bubbles, mica coated iron oxides, kaolin clay, salicylic acid, zinc oxide, zeolite, styrofoam beads, phosphates, silica, and the like. Other generally insoluble compounds include teatree powder, microsponges, Confetti (a trademark of united guardian company), talc, beeswax, and the like. The amount of the various insoluble compounds requiring stabilization will vary depending upon its purpose, desired end result, and efficacy thereof. Hence amounts can vary widely, but frequently will be within a general range of from about 0.1 % to about 20% by wt. based upon the total wt. of the composition. 4607-01

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[00125] The compositions according to the disclosed technology can be dispensed, for example, onto a user's hand, directly onto the area of a body to be treated, or onto a cloth, such as a washcloth, sponge, loofa or a towelette, as a means to transport the composition to specified area(s) of the human body. In other aspects of the disclosed technology, the composition may be impregnated into carrier means such as a towelette or wipe. When the composition is impregnated into carrier means, the carrier means may be sealed in a container that does not react adversely with the composition prior to use and that helps prevent the composition from being exposed to the environment prior to use.

[00126] The compositions formulated according to the presently disclosed technology may be applied to various parts of the body as rinse-off and/or leave- on applications. For example, such compositions may be applied to a part of a body and then be allowed to dry in place (e.g., a leave-on application, such as a lotion or cream), as it may be non-toxic to users. In other embodiments, the area to which the composition is applied may be toweled or blotted, thereby allowing the composition to evaporate or otherwise sink into the applied area. In further embodiments, the composition may be applied to an area and then rinsed off after a predetermined time. The area of application can be hydrated (pre wetted) prior to application of the composition. The composition can be applied with a cloth, bath sponge (e.g., luffa or loofah), hand, or the like. In some examples, the composition may be applied by rubbing the composition onto an area (e.g., using mechanical action with a hand, sponge, or the like) for a period ranging from one second to two minutes such as, e.g., a period ranging from approximately fifteen seconds to approximately one minute. The mechanical rubbing action helps to create foam, helps loosen and remove debris from the hair and skin, and helps the composition penetrate an afflicted area(s). The composition can be applied as disclosed above to selected areas afflicted with a pruritus including winter itch or can be applied as a personal care body cleanser during showering or bathing. The personal care cleansing composition can be formulated as a shampoo, body wash, shower gel, facial wash or scrub, hand cleanser, or make-up remover. 4607-01

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[00127] The cleansing composition can be applied to an afflicted area (with mechanical rubbing) of the body and/or the scalp and allowed to reside on the area (residence time) for greater than approximately 5 seconds before being rinsed off such as, e.g., greater than approximately 20 seconds in one aspect, greater than approximately 25 seconds in another aspect, greater than 30 seconds in still another aspect, greater than 1 minute in a further aspect, greater than approximately 5 minutes in a still further aspect. Recommended residence time ranges can range from approximately 10 seconds to approximately 5 minutes in one aspect, from approximately 20 seconds to approximately 1 minute in another aspect, from approximately 1 minute to approximately 2 minutes in still another aspect, or other lengths of time, as clinically appropriate. The foregoing residence times and residence time ranges can include the amount of time that the composition is actively rubbed on the skin of the user and the amount of time that the composition resides on the skin of the patient without being actively rubbed.

[00128] In some applications, a user can apply the composition to a skin area larger than an area specifically targeted for treatment (e.g., an afflicted area). For example, the user may apply the composition to the skin of an entire limb that includes the area specifically targeted for treatment, to the skin of substantially the entire body (e.g., an entire body wash), or to other suitable portions of a body. Such broader application of the composition may enhance the effectiveness of the composition on the area specifically targeted for treatment (e.g., an area or portion of the body already afflicted with the pruritus condition), by preventively treating adjacent of areas of the skin from developing a pruritus condition.

[00129] Compositions according to the disclosure may be applied to a part of the body with any suitable frequency. In some examples, the compositions may be used comparatively infrequently such as, for example, one per month, once per week, twice per week. Alternatively, the compositions may be applied more frequently such as, for example, at least twice per week, at least once per day, at least twice per day, or the like. In some examples, the skin of the user can be hydrated (e.g., wetted with water) before applying the composition. 4607-01

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[00130] The following examples are presented for illustrating the technology disclosed herein in greater detail. However, the examples are not to be construed as limiting the technology in any manner. It is to be appreciated that the forgoing formulations are set forth in an illustrative manner and that other compositions and the formulation thereof are within the scope of the present technology. Unless otherwise specified, all ingredient amounts are given by weight percent (wt.%) based on the weight of the composition, and each individual component is based on 100 percent active material.

Ingredient Descriptions and Abbreviations

Examples 1 and 2

[00131] Three body wash compositions were prepared utilizing the components set forth in Table 1.

Table 1

4607-01

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[00132] In a mixing vessel, combine Part A components and gently mix until uniform, and then add to mixture of part B until uniform.

[00133] In a separate mixing vessel, combine Part B components and gently mix until uniform. Add Part A to Part B under gentle mixing until a homogeneous mixture is attained.

[00134] Add Part C components in the order listed to the Part AB mixture and mix until homogeneous.

[00135] Add Part D to the Part ABC mixture with gentle stirring.

[00136] Add Part E to the ABCD mixture with gentle stirring to adjust the pH of the composition to approximately 7.

[00137] Add Part F to the ABCDE mixture with gentle stirring to adjust the pH of the composition to approximately 6.

[00138] In a separate vessel, add the Part G components and mix until uniform. Add the Part G mixture to the Part ABCDEF composition and gently stir until uniform.

Example 3

[00139] The Control formulation and the formulations of Examples 1 and 2 were evaluated by a sensory panel in a blind test study to determine the ability of the formulations to mitigate pruritus caused by winter season itch. Test panelists who shower as their only means of bathing, and who exclusively use a body wash cleansing product during their showering activity were interviewed and evaluated to determine whether they are afflicted with pruritus caused by conditions conducive to winter itch.

[00140] A panel of 8 persons who were confirmed to suffer from pruritus on any area of the skin affected by winter itch was selected for the evaluation. The panel test was conducted in 5 phases over a period of 35 consecutive days. In phase 1 (days 1 -7), the panelists were instructed to shower with the Control formulation (formulated without Acrylates Copolymer or the cationic conditioning polymer).

[00141] In phase 2 (days 8-14), the panelists were instructed to use the formulation of Example 1 for their daily showering activity. 4607-01

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[00142] In phase 3 (days 15-21 ), the panelists were instructed to use the Control formulation for their daily showering activity.

[00143] In phase 4 (days 22-28), the panelists were instructed to use the formulation of Example 2 for their daily showering activity.

[00144] In phase 5 (days 29-35), the panelists were instructed to use the Control formulation for their daily showering activity.

[00145] In all phases of the test, panelists were instructed not to deviate from their usual body wash product application and shower routines. Prior to the test, panelists were instructed to refrain from the use of moisturizing creams and anti itch products unless the itch became intolerable.

[00146] On each day during the test period (prior to retiring for the evening), panelists subjectively rated the intensity of any itch sensation originating on the skin and to assign a rating number according to the scale set forth in the table below. Panelists who report an itchy sensation from multiple sites (skin) on the body were instructed to average the ratings and report the average as a single rating no. for that day in accordance with the rating system set forth in the Table 2 below.

Table 2

[00147] The average itchiness rating (paired T-test) for the Control formulation for days 5-7 of phase 1 was about 3.1 , the average itchiness rating (paired T- 4607-01

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- 40 - test) for the formulation of Example 1 for days 5-7 of phase 2 was about 2.6, the average itchiness rating (paired T-test) for the Control formulation for days 5-7 of phase 3 was about 3.2, the average itchiness rating (paired T-test) for the Formulation of Example 2 for days 5-7 of phase 4 was about 2.3, and the average itchiness rating (paired T-test) for the Control formulation for days 5-7 of phase 5 was about 2.9, as shown in Fig. 1.

[00148] After the conclusion of the panel testing of the test formulations, a questionnaire was distributed to each panelist asking for a comparison of the relative improvement of the formulation of Examples 1 and 2 to the respective Control formulations for their ability to mitigate winter itch based on the following categories: No Change; Slightly Worse; Very Improved; Improved; and Slightly Improved. For the comparison of the formulation of Example 1 vs. the Control, 75% of the panelists indicated that the formulation of Example 1 improved or mitigated (sum of: Very Improved and Slightly Improved responses) the winter itch sensation. The results are charted in Fig. 2. For the comparison of the formulation of Example 2 vs. the Control, 75% of the panelists indicated that the formulation of Example 2 improved or mitigated (sum of: Improved, Slightly Improved and Very Improved responses) the winter itch sensation. The results are charted in Fig. 3.

Claims

4607-01 WO 2020/131678 PCT/US2019/066498 - 41 - What is claimed is:

1. A method for the treatment or mitigation of a pruritic skin condition comprising applying to the scalp and/or skin a body wash composition comprising:

a) from about 0.25 to about 5 wt.%, or from about 0.3 to about 4.5 wt.%, or from about 0.5 to about 4 wt.%, or from about 0.6 to about 3.6 wt.%, or from about 1 to about 3 wt.% of an acrylic copolymer prepared from a monomer mixture comprising:

i. from about 35 to about 65 wt.% of at least one acrylic acid, methacrylic acid;

ii. from about 65 to about 35 wt.% of at least one Ci to Cs alkyl ester of acrylic acid or methacrylic acid; and

iii. from about 0.03 to about 3 wt.% at least one polyunsaturated crosslinker monomer;

b) from about 0.05 to about 2 wt.%, or from about 0.1 to about 0.5 wt.%, or from about 0.2 to about 0.4 of at least one cationic polymer; and

c) from about 1 to about 20 wt.%, or from about 5 to about 15 wt.%, or from about 9 to about 12 wt.% of an anionic surfactant; and

d) a water phase component present in an amount of q.s. to 100 wt.%.

2. A method of claim 1 , wherein said composition further comprises an amphoteric surfactant present in a weight ratio of anionic surfactant to amphoteric surfactant ranging from about 10:1 to about 1 :2, or 9:1 , or about 8:1 , or about 7:1 , or about 6:1 , or about 5:1 , or about 4.5:1 , or about 4:1 , or about 3: 1 , or about 2: 1 or about 1 :1 , or about 1 :2.

3. A method of any of the preceding claims, wherein said anionic surfactant is selected from at least one of a surfactant selected from an alkyl ether sulfate, an alkyl sulfate, an alpha-olefin sulfonate, an alkyl isethionate, an acyl isethionate, PEG fatty acid amide MEA sulfates, an alkyl sulfosuccinate, and 4607-01

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- 42 - alkyl ether sulfosuccinate, an alkyl ether carboxylate, an amino acid derived surfactant, and mixtures thereof.

4. A method of any of the preceding claims, wherein said anionic surfactant is an alkyl ether sulfate selected from at least one of the sodium, potassium, lithium, ammonium, and alkanolammonium salts of laureth sulfate, trideceth sulfate, myreth sulfate, C12-C13 pareth sulfate, C12-C14 pareth sulfate, C12-C15 pareth sulfate, and mixtures thereof.

5. A method of any of the preceding claims, wherein said alkyl ether sulfate surfactant is ethoxylated with about 1 , or about 2, or about 3, or about 4, or about 5 moles of ethylene oxide.

6. A method of any of the preceding claims, wherein said anionic surfactant is an alkyl sulfate selected from at least one of the sodium, potassium, lithium, ammonium, and alkanolammonium salts of ethylhexyl sulfate, decyl sulfate, lauryl sulfate, tridecyl sulfate, myristyl sulfate, cetyl sulfate, cetearyl sulfate, and stearyl sulfate.

7. A method of any of the preceding claims, wherein said anionic surfactant is an alpha-olefin sulfonate comprising a compound of the formula:

FT— CH=CH— CH₂ - so₃ M⁺ wherein R’” is a linear or branched alkyl radical containing 8 to 20 carbon atoms, or 14 to 18 carbon atoms, or 16 to 18 carbon atoms; and M is selected from an alkali metal, ammonium and alkanolammonium moiety.

8. A method of any of the preceding claims, wherein said anionic surfactant is an amino acid derived surfactant selected from at least one propionate, taurate, glutamate, alaninate, glycinate, sarcosinate, aspartate, and mixtures thereof. 4607-01

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9. A method of any of the preceding claims, wherein said anionic surfactant is an amino acid derived surfactant selected from cocoyl glutamate, cocoyl glycinate, cocoyl sarcocinate, sodium and mixtures thereof.

10. A method of any of the preceding claims, wherein said composition further comprises an amphoteric surfactant selected from an alkyl amphocarboxylate surfactant, betaine surfactant, a sultaine surfactant, and mixtures thereof.

11. A method of any of the preceding claims, wherein said composition further comprises an amphoteric surfactant selected from lauryl betaine, coco betaine, oleyl betaine, cocohexadecyl dimethylbetaine, lauryl amidopropyl betaine, cocoamidopropyl betaine, and cocam idopropyl hydroxysultaine.

12. A method of any of the preceding claims, wherein said composition comprises sodium laureth sulfate and cocoamidopropyl betaine.

13. A method of any of the preceding claims, wherein said at least one cationic polymer is selected from poly(acrylamide-co-diallyldimethylammonium chloride), poly(acrylamide-co-methacryloyloxyethyl trimethylammonium methylsulfate) poly(acrylamide-co-methacrylamidopropyltrimethyl ammonium chloride), poly(acrylamide-co-N,N-dimethyl aminoethyl acrylate) and its quaternized derivatives, poly(acrylamide-co-N,N-dimethyl aminoethyl methacrylate) and its quaternized derivative, poly(hydroxyethylacrylate-co- dimethyl aminoethyl methacrylate), poly(hydroxpropylacrylate-co-dimethyl aminoethyl methacrylate), poly(hydroxpropylacrylate-co- methacrylamidopropyltrimethylammonium chloride), poly(acrylamide-co- diallyldimethylammonium chloride-co-acrylic acid), poly(diallyldimethylammonium chloride-co-acrylic acid), poly(acrylamide-co- methacrylamidopropyltrimethyl ammonium chloride-co-acrylic acid), poly(diallyldimethyl ammonium chloride), poly(methyl acrylate-co- methacrylamidopropyltrimethyl ammonium chloride-co-acrylic acid), 4607-01

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- 44 - poly(vinylpyrrolidone-co-dimethylaminoethyl methacrylate), poly(ethyl methacrylate-co-quaternized dimethylaminoethyl methacrylate), poly(ethyl methacrylate-co- oleyl methacrylate-co-diethylaminoethyl methacrylate), poly(diallyldimethylammonium chloride-co-acrylic acid), and combinations thereof.

14. A method of any of the preceding claims, wherein said at least one cationic polymer is selected from Polyquaternium-1 , Polyquaternium-5, Polyquaternium-6, Polyquaternium-7, Polyquaternium-8, Polyquarternium-10, Polyquaternium-11 , Polyquaternium-14, Polyquaternium-22, Polyquaternium-24, Polyquaternium-28, Polyquaternium-29, Polyquaternium-30, Polyquaternium-32, Polyquaternium-33, Polyquaternium-39, Polyquaternium-47, Polyquaternium-53, Guar Hydroxypropyltrimonium Chloride, Cassia Hydroxypropyltrimonium Chloride, Starch Hydroxypropyltrimonium Chloride, and mixtures thereof.

15. The method of any of the preceding claims, wherein the pH of said composition ranges from about 4 to about 10.5, or about 5 to about 8, or about 5.5 to about 6.5.

16. A method of any of the preceding claims wherein said composition further comprises a component selected from a humectant, an emollient, a hair conditioner, a skin conditioner, a fragrance agent, an antibacterial agent, a preservative, a colorant, a botanical extract, a chelating agent, a pH adjusting agent, an auxiliary thickening agent, and combinations thereof.

17. A method of any of the preceding claims wherein said at least one composition comprises:

a) from about 0.5 to about 4 wt.% of an acrylic copolymer prepared from a monomer mixture comprising:

i. about 35% to about 65% by weight of acrylic acid, methacrylic acid, or combinations thereof; - 45 - ii. about 65% to about 35% by weight of at least one monomer selected from ethyl acrylate, butyl acrylate, or combinations thereof; and

iii. about 0.03% to about 3% by weight of at least one polyunsaturated crosslinker monomer, wherein all monomer wt.% is based on the wt. of total monomer present;

b) from about 0.1 to about 0.5 wt.% of at least one cationic polymer selected from Polyquaternium-6, Polyquaternium-7, Polyquaternium-22, Polyquaternium-39, Polyquaternium-47, Polyquaternium-53, and mixtures thereof.

c) from about 7 to about 15 wt.% sodium laureth sulfate;

d) cocoamidopropyl betaine, wherein the weight ratio of c) to d) ranges from about 2:1 to about 4:1 ; and

e) a water phase component present in an amount of q.s. to 100 wt.%.

18. A method of any of the preceding claims comprising hydrating the scalp and/or skin prior to the application of said body wash composition.

19. A method of any of the preceding claims comprising rubbing said body wash composition after application against the scalp and/or skin to create lather.

20. A method of any of the preceding claims comprising allowing the at least one composition to reside on the scalp and/or skin for a period greater than about 20 seconds, or greater than about 25 seconds, or greater than about 30 seconds.

21. A method of any of the preceding claims comprising rinsing the scalp and/or skin after creating lather.

22. A method of any of the preceding claims wherein said pruritic skin sensation is caused by prolonged exposure to low relative humidity environments. - 46 -

23. A method of any of the preceding claims wherein said pruritic skin sensation is caused by winter season itch irritation.