MXPA06009707A - A mild body wash - Google Patents

Abstract

The present invention relates to a mild body wash composition that contains a surfactant component containing a surfactant or a mixture of surfactants;wherein said mild body wash composition has a Structured Domain Volume Ratio of at least about 70%;and where said surfactant component provides a Total Lather Volume of at least about 600 ml.

Description

SOFT LIQUID SOAP FOR THE BODY FIELD OF THE INVENTION The present invention relates to a body-gentle liquid soap composition comprising a surfactant component comprising a surfactant or a mixture of surfactants; wherein said soft body liquid soap composition has a structured domain volume ratio of at least about 70%; and wherein said surfactant component has a total foam volume of at least about 600 mL.

BACKGROUND OF THE INVENTION Composition products for personal care such as liquid body soaps are becoming increasingly popular in the United States and around the world. The compositions desired for body washing must meet a number of criteria. For example, to be acceptable to consumers, a liquid soap composition for the body must exhibit good cleaning properties, exhibit good foaming characteristics, be gentle to the skin (without drying or irritate the skin) and preferably also Provide a conditioning benefit to the skin.

Compositions for washing the body that attempt to provide conditioning benefits are known. Many of these compositions are aqueous systems comprising an emulsifying conditioning oil or other similar materials in combination with a foaming surfactant. Although these products provide both conditioning and cleaning benefits, it is often difficult to formulate a product that deposits a sufficient amount of skin conditioning agents on it during use. To combat the emulsification of the skin conditioning agents by the cleansing surfactant, large amounts of the skin conditioning agent are added to the compositions. However, this introduces another problem associated with these cleaning products and conditioners. Raising the level of the skin conditioning agent to achieve better deposit negatively affects the foaming performance and stability of the product. Accordingly, the need persists for a stable composition of mild body soap that provides longer lasting cleaning of the foam and better foaming characteristics and benefits for the skin such as silky feel of the skin, better smooth feeling of the skin, and better smooth feeling of the skin. Therefore, it is an object of the present invention to provide a liquid soap composition for the body comprising surfactants having a structured domain which can be combined with high levels of skin conditioning materials that are emulsified in the composition, preferably being suspended. in such a way that the skin conditioning materials can be deposited at high levels while maintaining a superior soap-making capacity unlike conventional liquid body soaps.

BRIEF DESCRIPTION OF THE INVENTION The present invention relates to a body-gentle liquid soap composition comprising a surfactant component comprising a surfactant or a mixture of surfactants; wherein said soft body liquid soap composition has a structured domain volume ratio of at least about 70%; and wherein said surfactant component has a total foam volume of at least about 600 mL. The present invention further relates to a body-gentle liquid soap composition comprising a surfactant component comprising a surfactant or a mixture of surfactants; wherein said surfactant component has at least about 70% of a lamellar phase; and wherein said composition has a total foam volume of at least about 600 mL. The present invention is also directed to a method for cleaning, moisturizing and supplying beneficial agents for the skin and particles by applying a composition to the skin as described above.

DETAILED DESCRIPTION OF THE INVENTION The body-gentle liquid soap composition of the present invention comprises a surfactant component comprising a surfactant or a mixture of surfactants; wherein said soft body liquid soap surfactant composition has a structured domain volume ratio of at least about 70%; and wherein said surfactant component has a total foam volume of at least about 600 mL. These and other essential limitations of the compositions and methods of the present invention, as well as many of the optional ingredients suitable for use herein are described in detail below. The term "anhydrous", as used herein and unless otherwise specified, refers to compositions or materials containing less than about 10%, more preferably less than about 5%, even more preferably about 3. %, even more preferably zero percent, by weight of water.

The term "environmental conditions", as used herein, refers to the surrounding conditions at 101 kPa ((1) atmosphere) of pressure, 50% relative humidity, and 25 ° C. As used herein, the term "cosmetically effective concentration" is a concentration that confers a benefit during the use of the composition. As used herein, the term "consistency value" or "k" is a measure of the viscosity and is used in combination with the cutting index to determine the viscosity of the materials in which the viscosity is a function of the friction. The measurements are made at 25 ° C and the units are 0.1 Pa.s (poise (equal to 100 centipoise).) As used herein, "domain" means a volume of material, component, composition or phase comprising a molecular mixture that can be concentrated but can not be further separated by physical forces such as ultracentrifugation. For example, lamellar surfactant, micellar surfactant, crystalline surfactant, oil, wax, water-glycerin mixture, and hydrophilic hydrated polymer, all constitute domains that can be concentrated and observed by ultracentrifugation, but can not be further separated into separate molecular components by the same forces. The term "hydrophobically modified interference pigment" or "HMIP", as used herein, means that a portion of the surface of the interference pigment has been coated, including both the physical and chemical bonding of the molecules, with a material hydrophobe.

As used herein, the term "interference pigment" refers to a pearlescent pigment that is prepared by coating the surface of a particulate substrate material (generally platelet-shaped) with a thin film. The thin film is a transparent or semi-transparent material that has a high refractive index. The material having a high refractive index exhibits a pearl luster resulting from the interference action between the reflecting light and the incident light from the contact surface between the platelet substrate and the coating layer and the reflectance of the incident light from the surface of the coating layer. The term "a body-gentle liquid soap composition" as used herein, refers to compositions intended for topical application to the skin or hair. The term "opaque" structured surfactant phase, as used herein, refers to a surfactant phase with ordered structures (eg, lamellar structure, vesicular structure, cubic structure, etc.) and is visually opaque to the naked eye in a tube of a 10 mm internal diameter plastic centrifuge after the ultracentrifugation method described herein. The term "phases", as used herein, refers to a region of a composition that has an average composition, different from another region that has a different average composition. The term "cutting index" or "n", as used herein, is a measure of viscosity and is used in combination with the consistency value to define the viscosity of materials whose viscosity is a function of friction. The measurements are made at 25 ° C and the units have no dimension. As used herein, the phrase "practically free from" means that the composition comprises up to about 3%, preferably up to about 1%, more preferably up to about 0.5%, even more preferably up to about 0.25% and most preferably to about 0.1% of the indicated ingredient, by weight of the composition. The solubility parameter Vaughan (VSP), as used herein, is a parameter used to define the solubility of hydrophobic compositions comprising hydrophobic materials. The Vaughan solubility parameters are well known in the various chemical and formulation techniques, and typically have a range of about 5 to about 25 (cal / cm 3) 1/2. All percentages, parts and relationships, as used herein, are by weight of the total composition, unless otherwise specified. With respect to the ingredients listed, all of these weights are based on the level of asset and therefore do not include solvents or by-products that may otherwise be included in commercially available products, unless otherwise specified. The soft body liquid soap compositions and methods of the present invention may comprise, consist of, or consist essentially of, the essential elements and limitations of the invention described herein, as well as any additional or optional ingredients or components, or the limitations described herein or otherwise useful in personal care compositions intended for topical application to hair or skin. Product form The soft body soap composition of the present invention is normally in liquid form. In this document, the term "liquid" means that the composition has a certain degree of fluidity. Therefore, the term "liquids" may include liquid, semi-liquid, cream, lotion or gel compositions, which are intended to be applied topically on the skin. The compositions typically exhibit a viscosity of equal to or greater than about 1.5 Pa.s (1500 cps) to about 1000 Pa.s (1,000,000 cps), as measured by the viscosity method as described in the co-pending patent application. from the USA no. No. 60 / 542,710 filed February 6, 2004. When assessing soft body soap compositions comprising a surfactant component and an additional beneficial material, liquid soap for the body can be separated by means of separation , including centrifugation, ultracentrifugation, pipetting, filtering, washing, dilution, or combinations thereof, and then the separate components can be evaluated. Preferably, the separation means is selected such that the resulting separate components being evaluated are not destroyed, but are representative of the component as it exists in the body-gentle liquid soap composition. All forms of the product considered to define the compositions and methods of the present invention are formulations that are removed by rinsing, which means that the product is applied topically to the skin or hair where it is rinsed almost immediately (it is say a few minutes later) with water or in any other way is cleaned with a substrate or other suitable means of disposal by depositing a portion of the composition. SURFACTANT COMPONENT The soft body liquid soap composition of the present invention comprises a surfactant component comprising a surfactant or a mixture of surfactants. The surfactant component comprises surfactants suitable for application to the skin or hair. Surfactants suitable for use herein include any known suitable cleaning surfactant or in any other effective way to be applied to the skin, and that in any other way is compatible with the other essential ingredients in the composition of mild liquid soap for the body including water. These surfactants include nonionic, cationic, zwitterionic or amphoteric anionic surfactants, soap or combinations thereof. Preferably, the surfactant component comprises a mixture of at least one nonionic surfactant, at least one anionic surfactant and at least one amphoteric surfactant. The general categories of alkylamines and alkanolamines are less preferred surfactants, because these surfactants tend to be less mild than other suitable surfactants. In a preferred embodiment of the present invention, the soft body liquid soap composition is practically free of alkylamines and alkanolamines. The surfactant component in the present invention exhibits a non-Newtonian pseudoplastic behavior. Preferably, the soft body liquid soap composition has a viscosity greater than about 1.5 Pa.s (1500 centipoise ("cps")), more preferably greater than about 5 Pa.s (5000 cps), even with more preference greater than about 10 Pa.s (10,000 cps), and even more preferably greater than about 20 Pa.s (20,000 cps), as measured by the viscosity method described in the co-pending US patent application. . no. serial 60/542710 filed on February 6, 2004. The surfactant component comprises a structured domain comprising a structured surfactant system. The structured domain allows the incorporation of high levels of beneficial components that are not emulsified in the composition but are suspended. In a preferred embodiment, the structured domain is an opaque structured domain. The opaque structured domain is preferably a lamellar phase. The lamellar phase produces a network of lamellar gel that is a type of colloidal system. The lamellar phase provides cut resistance, adequate performance to suspend particles and droplets and at the same time provide long-term stability, since it is thermodynamically stable. The lamellar phase obtains a higher viscosity without the need for viscosity modifiers. Preferably, the surfactant component has a yield point greater than about 0.1 Pascal (Pa), more preferably greater than about 0.5 Pascal, still more preferably greater than about 1.0 Pascal, still more preferably greater than about 2.0 Pascal, yet more preferably greater than about 5 Pascal, and still more preferably greater than about 10 Pascal, as measured by the yield point method described below. The body-gentle liquid soap composition comprising a surfactant component has a structured domain-volume ratio of at least about 70%, preferably at least about 75%, more preferably at least about 80%, even with more preferably at least about 85% as measured by the Ultracentrifugation Method described below. The soft body liquid soap composition preferably comprises a surfactant component in concentrations ranging from about 1% to about 95%, preferably 1% to about 80%, more preferably from 5% to about 80% , more preferably from about 4% to about 70%, even more preferably from about 5% to about 50%, even more preferably from about 8% to about 30%, and with even more preference from about 10% to about 25% by weight of the composition of liquid soap for the body. The preferred pH range of the mild liquid soap for the body is from about 5 to about 8, more preferably about 6. The structured domain allows the incorporation of high levels of beneficial components that are not emulsified in the composition but are suspended. Even with the high levels of beneficial components, soft body soap liquid compositions produce superior soaping capacity. The surfactant component has a total foam volume of at least about 600 mL, preferably greater than about 800 mL, more preferably greater than about 1000 mL, still more preferably greater than about 1200 mL, even more preferably higher than about 1500 mL, and with even more preference greater than about 2000 mL, as measured by the foam volume test described below. The surfactant component preferably has an instantaneous foam volume of at least about 300 mL, preferably greater than about 400 mL, still more preferably greater than about 500 mL, as measured by the foam volume test described below. . The structured domain has a total foam volume of at least about 450 mL, preferably greater than about 500 mL, more preferably greater than about 600 mL, even more preferably greater than about 800 mL, even more preferably higher than about 1000 mL, and even more preferably greater than about 1250 mL, as measured by the foam volume test described below. The structured domain preferably has an instantaneous foam volume of at least about 200 L, preferably greater than about 250 mL, still more preferably greater than about 300 mL, as measured by the foam volume test described below. . Nonionic Surfactants The soft liquid body soap composition preferably comprises at least one nonionic surfactant. Preferably the nonionic surfactant has a hydrophilic-lipophilic balance of from about 1.5 to about 15.0, preferably from about 3.4 to about 15.0, more preferably from about 3.4 to about 9.5, even more preferably from about 3.4 to about 5.0. The soft body liquid soap composition preferably comprises nonionic surfactant in concentrations ranging from about 0.1% to about 50%, more preferably from about 0.25% to about 30%, even more preferably about 0.5% to about 25%, even more preferably from about 1.0% to about 20%, and even more preferably from about 1.5% to about 10%, by weight of the surfactant component.

Non-limiting examples of nonionic surfactants for use in the compositions of the present invention are described in McCutcheon's, Detergents and Emulsifiers, North American Edition (1986), published by Allured Publishing Corporation; and McCutcheon's, Functional Materials, American Edition (1992); The nonionic foaming surfactants useful herein include those selected from the group comprising alkyl glycosides, alkyl polyglucosides, polyhydroxy fatty acid amides, alkoxylated fatty acid esters, sucrose foam esters, amine oxides, and mixtures thereof. Non-limiting examples of preferred nonionic surfactants for use herein are those selected from the group comprising C8-C14 glucosamides, C8-C14 alkyl polyglucosides, sucrose cocoate, sucrose laurate, and mixtures thereof. . In a preferred embodiment the nonionic surfactant is selected from the group comprising glyceryl monohydroxystearate, steareth-2, hydroxystearic acid, propylene glycol stearate, PEG-2 stearate, sorbitan monostearate, glyceryl stearate, laureth-2 and mixtures thereof. In a preferred embodiment the non-ionic surfactant is steareth-2. Nonionic foaming surfactants also useful herein include, lauramine oxide, cocoamine oxide.

The balance between the hydrophilic and lipophilic entities in a surfactant molecule is used as a classification method (hydrophilic-lipophilic balance (HLB)). The hydrophilic-lipophilic balance values for the commonly used surfactants are found in the literature (eg Handbook of Pharmaceutical Excipients (The Pharmaceutical Excipients Manual, The Pharmaceutical Press, London, 1994) .The HLB system was originally conceived by Griffin (J. Soc. Cosmetic Chem., 1, 311, 1949). Griffin defines the HLB value of a surfactant as the mole percent of the hydrophilic groups divided by 5, where one totally hydrophilic molecule (no non-polar groups) had an HLB value of 20. Anionic Surfactants: The liquid soap composition mild to the body preferably comprises at least one anionic surfactant. The soft body liquid soap composition preferably comprises an anionic surfactant in concentrations ranging from about 1% to about 50%, more preferably from about 4% to about 30%, even more preferably from about 5% to about 25%, by weight of the surfactant component. Preferably the anionic surfactants are selected from the group comprising alkyl ether sulphates, alkylsulfonates and mixtures thereof. Suitable anionic surfactants for use in the body mild liquid soap composition include alkyl sulfates and alkyl ether sulfates. These materials have the respective formula ROSO3M and RO (C2H4O) xS03M, wherein R is alkyl or alkenyl of about 8 to about 24 carbon atoms, x is 1 to 10, and M is a water soluble cation such as ammonium, sodium, potassium and triethanolamine. Alkylether sulfates are usually made as condensation products of ethylene oxide and monohydric alcohols having from about 8 to about 24 carbon atoms. Preferably, R has from about 10 to about 18 carbon atoms in both the alkyl sulfates and the alkyl ether sulfates. The alcohols can be derived from fats, for example coconut oil or tallow, or they can be synthetic. In the present invention, lauryl alcohol and straight chain alcohols derived from coconut oil are preferred. These alcohols are reacted with from about 1 to about 10, preferably from about 3 to about 5, and more preferably with about 3 molar proportions of ethylene oxide and the resulting mixture of the molecular species having, for example, an average of 3. moles of ethylene oxide per mole of alcohol, sulfated and neutralized. Specific examples of alkyl ether sulfates that can be used in the soft body soap composition are the sodium and ammonium salts of alkyl ether sulphate of coconut triethylene glycol; tallow triethylene glycol alkyl ether sulfate, and tallow hexamethylenyl sulfate. The most preferred alkyl ether sulfates are those comprising a mixture of individual compounds; the mixture has an average alkyl chain length of about 10 to about 16 carbon atoms and an average degree of ethoxylation of about 1 to about 4 moles of ethylene oxide. Other suitable anionic surfactants include the water-soluble salts of the organic products of the sulfuric acid reaction of the general formula [R1-SO3-M], wherein R1 is selected from the group comprising a straight chain saturated aliphatic hydrocarbon radical. or branched having from about 8 to about 24 carbon atoms, preferably from about 10 to about 18 carbon atoms, and M is a cation. Suitable examples are the salts of a reaction product of organic sulfuric acid of a hydrocarbon of the methane series, including lso, neo, ineso, and n-paraffins having from about 8 to about 24 carbon atoms, preferably from about 10 to about 18 carbon atoms and a sulfonating agent, for example SO 3, H 2 SO 4, oleum, obtained according to known methods of sulfonation, including bleaching and hydrolysis. Preferred are sulfonated C10.18 alkali metal and ammonium n-paraffins. Other suitable surfactants are described in the publication McCutcheon's, Emulsifiers and Detergents (Emulsifiers and Detergents) McCutcheon). 1989 Annual, published by M. C. Publishing Co., and in U.S. Pat. no. 3,929,678. Preferred anionic surfactants for use in the body mild liquid soap composition include ammonium lauryl sulfate, ammonium laureth sulfate, triethylamine lauryl sulfate, triethylamine laureth sulfate, triethanolamine lauryl sulfate, triethanolamine laureth sulfate, monoethanolamine lauryl sulfate, monoethanolamine laureth sulfate, diethanolamine lauryl sulfate, diethanolamine laureth sulfate, monoglyceride sodium lauryl sulfate, sodium lauryl sulfate, sodium laureth sulfate, potassium laureth sulfate, sodium lauryl sarcosinate, sodium lauroyl sarcosinate, lauryl sarcosine, cocoyl sarcosine, ammonium cocoyl sulfate, ammonium lauroyl sulfate, sodium cocoyl sulfate , sodium lauroylsulfate, potassium cocoylsulfate, potassium lauryl sulfate, monoethanolamine cocoylsulfate, sodium tridecylbenzenesulfonate, sodium dodecylbenzenesulfonate, and combinations thereof. In some embodiments, anionic surfactants with branched alkyl chains, such as sodium trideceth sulfate, are preferred. In some embodiments, mixtures of anionic surfactants can be used. Amphoteric Surfactants The liquid soft soap composition for the body preferably comprises at least one amphoteric surfactant. The soft body liquid soap composition preferably comprises an amphoteric surfactant in concentrations ranging from about 1% to about 50%, more preferably from about 2% to about 30%, even more preferably from about 3% to about 25%, by weight of the surfactant composition. Amphoteric surfactants suitable for use in the present invention include those which are generally described as derivatives of secondary and tertiary aliphatic amines in which the aliphatic radical can be straight or branched chain and wherein one of the aliphatic substituents contains about 8 to about 18 carbon atoms and one contains an anionic group for solubilization in water, for example carboxyl, sulfonate, sulfate, phosphate, or phosphonate. Examples of compounds falling within this definition are: 3-dodecilminopropionato, sodium 3-dodecylaminopropane, sodium lauryl sarcosinate, N-alkyltaurines such as the one prepared by reacting dodecylamine with sodium isethionate according the teachings of the U.S. patent no. 2,658,072, N-higher alkyl aspartic acids such as those made according to the teachings of U.S. Pat. no. 2,438,091, and the products described in U.S. Pat. no. 2,528,378. The amphoacetates and dianfoacetates can also be used. Anfoacetate CH3 (CH2) nCOHNHCH2N-CH2CH2OH CH, COO M + Dianfoacetate CH2COO 'M + I RCONCH2CH2N - CH2CH2OH I CH2COO "M + Amphoacetates and dianfoacetates conform to the formulas (mentioned above) where R is an aliphatic group of 8 to 18 carbon atoms. M is a cation such as sodium, potassium, ammonium, or substituted ammonium. In some embodiments, sodium lauroamphoacetate, sodium cocoamphoacetate, disodium lauroamphoacetate, and disodium cocodyamphoacetate are preferred.

Additional surfactants of the zwitterionic surfactant classes, and / or cationic surfactants can be incorporated into the soft body soap compositions. Zwitterionic surfactants suitable for use in mild body soap compositions include those that are they are generally described as derivatives of ammonium compounds, phosphonium, and quaternary aliphatic sulfonium, in which the aliphatic radicals they may be straight or branched chain, and wherein one of the aliphatic substituents contains from about 8 to about 18 carbon atoms and one contains an anionic group, e.g. ex. carboxyl, sulfonate, sulfate, phosphate, or phosphonate. These suitable zwitterionic surfactants can be represented by the formula: (R3)? l + R2- Y + -CH2-R4- t wherein R2 contains an alkyl, alkenyl, or hydroxyalkyl radical of from about 8 to about 18 carbon atoms, from 0 to about 10 ethylene oxide entities, and from 0 to about 1 glyceryl entity; Y is selected from the group comprising nitrogen, phosphorus, and sulfur atoms; R3 is an alkyl or monohydroxyalkyl group containing about 1 to about 3 carbon atoms; X is 1 when Y is a sulfur atom, and 2 when Y is a nitrogen or phosphorus atom; R 4 is an alkylene or hydroxyalkylene of about 1 to about 4 carbon atoms and Z is a radical selected from the group comprising carboxylate, sulfonate, sulfate, phosphonate, and phosphate groups Other zwitterionic surfactants suitable for use in mild liquid soap compositions for the body includes betaines, including the high alkyl betaines such as cocodimethyl carboxymethyl betaine, cocoamidopropyl betaine, cocobetaine, laurylamidopropyl betaine, oleylbetaine, lauryldimethyl carboxymethyl betaine, lauryldimethyl-alphacarboxyethyl betaine, cetyldimethyl carboxymethyl betaine, lauryl bis- (2-hydroxyethyl) carboxymethyl betaine, stearyl bis - (2-hydroxypropyl) carboxymethyl betaine, oleyldimethyl-gamma-carboxypropyl betaine, and lauryl bis- (2-hydroxypropyl) alpha-carboxyethyl betaine. The sulfobetaines may be represented by coconut dimethyl sulfopropyl betaine, stearyldimethyl sulfopropyl betaine, lauryldimethylsulfoethyl betaine, lauryl bis- (2-hydroxyethyl) sulfopropylbetaine and the like; amidobetaines and amidosulfobetaines, wherein the radical RCONH (CH2) 3 is attached to the nitrogen atom of betaine are also useful in this invention. The cationic surfactants can also be used in the body-gentle liquid soap compositions, but are generally less preferred, and preferably represent less than about 5% by weight of the compositions. Electrolyte If an electrolyte is used, it can be added per se in the composition or it can be formed in place by means of the counterions included in some raw material. The electrolyte preferably includes an anion comprising phosphate, chloride, sulfate or citrate and a cation comprising sodium, ammonium, potassium, magnesium or mixtures thereof. Some preferred electrolytes are sodium or ammonium chloride or sodium or ammonium sulfate. A preferred electrolyte is sodium chloride. The electrolyte is preferably added to the surfactant component of the composition. When present, the electrolyte must be present in an amount that facilitates the formation of the stable composition (non-Newtonian pseudoplastic behavior). In general, this amount is from about 0.1% by weight to about 15% by weight, preferably from about 1% to about 6% by weight of the composition, but can be varied if required. Beneficial Component The soft body soap compositions of the present invention may comprise a beneficial component. The beneficial component is selected from the group comprising lipids, hydrocarbons, fats, oils, hydrophobic plant extracts, fatty acids, silicone materials and mixtures thereof; active ingredients for skin care, wherein the active ingredients for skin care are selected from the group comprising vitamins and derivatives thereof; sun protection agents; conservatives; anti-acne medications; antioxidants; sedation and skin healing agents; chelating agents and sequestering agents; essential oils, agents of perception, and mixtures of these. Hydrophobic composition In a preferred embodiment the liquid body soap composition comprises a hydrophobic composition comprising a beneficial hydrophobic component. Soft body liquid soap compositions comprise from about 20% to about 100%, preferably at least about 35%, most preferably at least about 50% of a beneficial hydrophobic component. Hydrophobic compositions suitable for use in the present invention have a Vaughan solubility parameter, as described in copending U.S. patent application Ser. no. in series 60 / 542,710 filed on February 6, 2004, from about 5 to about 15. The hydrophobic compositions are preferably selected from those having preferred rheological properties as described in copending U.S. patent application Ser. no. of series 60 / 542,710 filed on February 6, 200, including the selected consistency value (k) and the cut index (n). These preferred rheological properties are especially useful for providing compositions of mild liquid body soap with improved deposition of the hydrophobic components on the skin. Non-limiting examples of beneficial hydrophobic components suitable for use herein may include a variety of hydrocarbons, oils and waxes, silicones, fatty acid derivatives, cholesterol, cholesterol derivatives, diglycerides, triglycerides, vegetable oils, vegetable oil derivatives, esters of acetoglycerides, alkyl esters, alkenyl esters, polyglyceryl esters of fatty acids, lanolin and its derivatives, wax esters, beeswax derivatives, sterols and phospholipids, vitamins and provitamins and combinations thereof. Some non-limiting examples of hydrocarbon oils and waxes suitable for use in the present invention include petrolatum, mineral oil, microcrystalline wax, polyalkene, paraffins, ceresins, ozokeri polyethylenes, perhydrosqualenes, and combinations thereof. Non-limiting examples of silicone oils suitable for use as beneficial hydrophobic components herein include dimethicone copolyol, dimethylpolysiloxane, diethylsiloxane, mixed C 1 -C 30 alkyl polysiloxanes, alkyl polysiloxanes, phenyl dimethicone, and combinations thereof. Non-volatile silicones selected from dimethicone, dimethiconol, combined C1-C30 alkyl polysiloxanes, and combinations thereof are preferred. Non-limiting examples of silicone oils useful herein are described in U.S. Pat. no. 5 011 681 (Ciotti et al.). Non-limiting examples of diglycerides and triglycerides suitable for use as hydrophobic components herein include castor oil, soybean oil, soybean oil derivatives such as soybean oil maleate, safflower oil, cottonseed oil, oil. corn, walnut oil, peanut oil, olive oil, cod liver oil, almond oil, avocado oil, palm oil and sesame oil, vegetable oils, sunflower oil, and vegetable oil derivatives; coconut oil and coconut oil derivatives, cottonseed oil and cottonseed oil derivatives, jojoba oil, cocoa butter, and combinations thereof. Non-limiting examples of acetoglyceride esters suitable for use as beneficial hydrophobic components herein include the acetylated monoglycerides. Non-limiting examples of alkyl esters suitable for use as beneficial hydrophobic components herein include isopropyl esters of fatty acids and long chain esters of long chain fatty acids (ie C 10 -C 24), for example cetyl ricinoleate, non-limiting examples of which include isopropyl palmitate, isopropyl myristate, cetyl riconoleate and stearyl riconeleate. Other examples are: hexyl laurate, isohexyl laurate, myristyl myristate, isohexyl palmitate, decyl oleate, isodecyl oleate, hexadecyl stearate, decyl stearate, isopropyl isostearate, diisopropyl adipate, diisohexyl adipate, adipate dihexyldecyl, diisopropyl sebacate, acyl isononanoate lauryl lactate, myristyl lactate, cetyl lactate, and combinations thereof. Non-limiting examples of alkenyl esters suitable for use as beneficial hydrophobic components herein include oleyl myristate, oleyl stearate, oleyl oleate, and combinations thereof. Non-limiting examples of polyglyceryl esters of fatty acids suitable for use as hydrophobic components herein include decaglyceryl distearate, decaglyceryl diisostearate, decaglyceryl monomiriate, decaglyceryl monolaurate, hexaglyceryl monoleate, and combinations thereof. Non-limiting examples of lanolin and lanolin derivatives suitable for use as hydrophobic materials herein include lanolin, lanolin oil, lanolin wax, lanolin alcohols, lanolin fatty acids, isopropyl lanolate, acetylated lanolin, acetylated lanolin alcohols, linoleate of lanolin alcohol, lanolin alcohol riconeleate, and combinations thereof.

Still other suitable beneficial hydrophobic components include milk triglycerides (for example hydroxylated milk glyceride) and polyol fatty acid polyesters. Still other suitable hydrophobic components include wax esters, the non-limiting examples of which include beeswax and beeswax derivatives, spermaceti, myristyl myristate, stearyl stearate, and combinations thereof. Vegetable waxes such as carnauba and candelilla waxes are also useful; sterols such as cholesterol, cholesterol fatty acid esters; and phospholipids such as lecithin and derivatives, sphingolipids, glycosphingol lipid ceramides, and combinations thereof. Optional beneficial components A variety of suitable optional beneficial components can be employed in the composition of mild liquid soap for the body. These optional ingredients are usually those materials approved for use in cosmetics and are described in reference books such as the CTFA Cosmetic Ingredient Handbook, second edition, The Cosmetic, Toiletries, and Fragrance Association. , Toiletries and Fragrances), Inc. 1988, 1992. These optional beneficial materials can be used in any aspect of the compositions of the present invention. Optional non-limiting beneficial components include humectants and solutes. A variety of humectants and solutes may be employed and are present at a level of from about 0.1% to about 50%, preferably from about 0.5% to about 35%, and more preferably from about 2% to about 20%, by weight of The composition of mild liquid soap for the body. A preferred humectant is glycerin. A preferred water-soluble organic material is chosen from the group comprising a polyol of the structure: R1 - 0 (CH2 - CR2HO) nH wherein R1 = H, C1-C4 alkyl; R2 = H, CH3 and n = 1-200; C2-C10 alkanediols; guanidine; salts of glycolic acid and glycolate (for example ammonium and quaternary alkylammonium salts of lactic acid and lactate (for example ammonium and quaternary alkylammonium, polyhydric alcohols such as sorbitol, glycerol, hexanotriol, propylene glycol, hexylene glycol and the like, polyethylene glycol, sugars and starches) sugar and starch derivatives (eg, alkoxylated glucose), panthenol (including D-, L-, and the D, L forms), pyrrolidonecarboxylic acid, hyaluronic acid, lactamide monoethanolamine, acetamide monoethanolamine, and urea, and mixtures thereof. More preferred polyols are selected from the group consisting of glycerin, polyoxypropylene (1) glycerol and polyoxypropylene (3) glycerol, sorbitol, butylene glycol, propylene glycol, sucrose, urea and triethanolamine. Preferably, non-ionic polyethylene / polypropylene glycol polymers are used as agents skin conditioners The polymers useful herein that are especially preferred are PEG-2M where x is equal to 2 and n has an average value of about 2000 (PEG 2-M is also known as Poiyox WSR® N-10 of Union Carbide and as PEG-2,000); PEG-5M where x equals 2 and n has an average value of approximately 5000 (PEG 5-M is also known as Poiyox WSR® 35 and Poiyox WSR® N-80, both from Union Carbide and as PEG-5,000 and polyethylene glycol 200,000); PEG-7M where x is equal to 2 and n has an average value of approximately 7000 (PEG 7-M is also known as Poiyox WSR® (N-750 of Union Carbide); PEG-9M where x equals 2 and n has an average value of approximately 9000 (PEG 9-M is also known as Poiyox WSR® N-3333 from Union Carbide); PEG-14 M where x equals 2 and n has an average value of approximately 14,000 (PEG 14- M is also known as Poiyox WSR-205 and Poiyox WSR® N-3000 both from Union Carbide) and PEG-90M where x equals 2 and n has an average value of approximately 90,000. (PEG-90M is also known as Poiyox WSR®-301 from Union Carbide. Other non-limiting examples of these optional beneficial components include vitamins and derivatives thereof (eg, ascorbic acid, vitamin E, tocopheryl acetate, and the like); sun protection agents; thickening agents (for example polyol alkoxy ester, available as Crothix from Croda); preservatives to maintain the antimicrobial integrity of the cleaning compositions; anti-acne medications (resorcinol, salicylic acid, and the like); antioxidants; sedation and skin healing agents such as aloe extract, allantoin and the like; chelating agents and sequestering agents; and agents suitable for aesthetic purposes such as fragrances, essential oils, permeating agents, pigments, pearlizing agents (for example mica and titanium dioxide), lacquers, coloring agents, and the like (for example clove oil, menthol, camphor , eucalyptus oil, and eugenol). Still other suitable beneficial hydrophobic components include ethanolamines of the general structure (HOCH2CH2) xNHy wherein x = 1-3; y = 0-2, and x + y = 3. Particle The composition of mild liquid soap for the body can comprise a particle. Solid particles insoluble in water of various shapes and densities can be used. In a preferred embodiment, the shape of the particle tends to be spherical, oval, irregular or any other shape in which the ratio of length to width (defined as the aspect ratio) is up to about 10. More preferably, the dimensional proportion of the particle is up to about 8 and with an even greater preference that proportion is up to about 5. The particle of the present invention has a particle size (average volume based on the measurement of the particle size described in the application U.S. Patent No. 60 / 542,710 filed February 6, 2004) less than about 100 μm, preferably less than about 80 μm, and more preferably the particle size is less than about 60 μm.

The particle of the present invention preferably has a particle size greater than about 0.1 μm, preferably a particle size greater than about 0.5 μm, more preferably a particle size greater than about 1 μm, even more preferably a particle size greater than about 2 μm, still more preferably a particle size greater than about 3 μm, and even more preferably a particle size greater than about 4 μm. The particle has a diameter of about 1 μm to about 70 μm, more preferably about 2 μm to about 65 μm, and even more preferably about 2 μm to about 60 μm in diameter. The body-gentle liquid soap composition of the present invention comprises the particle at a cosmetically effective level. Preferably the composition comprises at least about 0.1% by weight, more preferably at least about 0.2% by weight, more preferably at least about 0.5% by weight, with a greater preference at least about 1%, and with a preference still greater than at least about 2% by weight of the particles. In the soft body soap composition of the present invention, the particles preferably comprise no more than about 50% by weight of the composition, more preferably no more than about 30%, even more preferably no more than about 20% by weight. %, and even more preferably no more than about 10% by weight of the composition. Preferably, the particle will also have physical properties that are altered significantly during the normal processing of the composition. Preferably, a particle whose melting point is greater than about 70 ° C, more preferably greater than about 80 ° C, and even more preferably greater than about 95 ° C is used. As used herein, the melting point refers to the temperature at which the particle passes into a liquid or fluid state or undergoes significant deformation or changes in its physical properties. In addition, many of the particles of the present invention are crosslinked or have a cross-linked surface membrane. These particles do not exhibit a different melting point. Crosslinked particles are also useful as long as they are stable under the processing and storage conditions that are used in making the compositions. The particles useful in the present invention can be natural, synthetic or semi-synthetic. In addition, hybrid particles can also be used. The synthetic particles can be obtained from crosslinked or non-crosslinked polymers. The particles of the present invention may have surface charges or their surface may be modified with organic or inorganic materials such as surfactants, polymers, and inorganic materials. Particulate complexes can be used.

Examples of natural particles include various silica particles precipitated in hydrophilic or hydrophobic form available from Degussa-Huls under the trade name Sipemet. A preferred particle is Precipitated ™, hydrophobic, synthetic and amorphous silica available from Degussa under the trade name Sipernet D11 ™. The colloidal silica particles of Snowtex are available from Nissan Chemical America Corporation. Non-limiting examples of synthetic particles include nylon, silicone resins, poly (meth) acrylates, polyethylene, polyester, polypropylene, polystyrene, polyurethane, polyamide, epoxy resins, urea resins, and acrylic powders. Among the non-limiting examples of useful particles are mentioned Microease 11 OS, 114S, 116 (micronized synthetic waxes), Micropoly 210, 250S (micronized polyethylene), Microslip (micronized polytetrafluoroethylene), and Microsilk (combination of polyethylene and polytetrafluoroethylene)., all available from Micro Powder, Inc. Other examples include Luna particles (soft silica particles) available from Phenomenex, MP-2200 (polymethylmethacrylate), EA-209 (ethylene / acrylate copolymer), SP-501 (nylon-12) ), ES-830 (polymethyl methacrylate), BPD-800, BPD-500 (polyurethane) available from Kobo Products, Inc. and silicone resins marketed as Tospearl particles by GE Silicones. The cross-linked polystyrene Ganzpearl GS-0605 (available from Presperse) is also useful. Examples of hybrid particles include Ganzpearl GSC-30SR (Sericite and Crosslinked Polystyrene Hybrid Powder) and SM-1000, SM-200 (Silica Hybrid Powder available from Presperse).

Exfoliating particle The exfoliating particle is selected from the group comprising polyethylene, microcrystalline wax, jojoba esters, amorphous silica, talc, tricalcium orthophosphate, or mixtures thereof, and the like. The exfoliating particle has a particle size along the major axis of the particle ranging from about 100 microns to about 600 microns, preferably from about 100 microns to about 300 microns. The exfoliating particle has a hardness of up to about 4 mohs, preferably up to about 3 mohs. The hardness measured in this way is a criterion of the resistance of a particulate material to crushing. It is known as a fairly adequate indicator of the abrasiveness of a particulate ingredient. Examples of materials, mentioned in order of increasing hardness in accordance with the Moh scale are: h (hardness) -1: talc; h-2: gypsum, rock salt, in general crystalline salt, barite, chalk, sulfur; h-4: fluorite, soft phosphate, magnesite, lime; h-5: apatite, hard phosphate, hard lime, chromite, bauxite; h-6: feldspar, ilmenite, homblendas; h-7: quartz, granite; h-8: topaz; h-9: corundum, emeril; and h-10: diamond. Preferably, the exfoliating particle has a color different from that of the cleaning base. Preferably, the composition comprises less than about 10% and more preferably less than about 5% exfoliating particle, by weight.

Glossy particles The composition of soft liquid soap for the body can comprise a bright particle. Non-limiting examples of bright particles include the following: interference pigment, multilayer pigment, metal particle, solid and liquid crystals, or combinations of these. An interference pigment is a pearl-luster pigment that is prepared by coating the surface of a particulate substrate material with a thin film. The particulate substrate material usually has a platelet shape. The thin film is a transparent or semi-transparent material that has a high refractive index. The material having a high refractive index exhibits a pearl luster resulting from the interference action between the reflecting light and the incident light from the contact surface between the platelet substrate and the coating layer and the reflectance of the incident light from the surface of the coating layer. The interference pigments of the soft body liquid soap compositions preferably comprise no more than about 20 weight percent of the composition, more preferably no more than about 10 weight percent, even more preferably no more than 10 weight percent. about 7 weight percent, and even more preferably no more than about 5 weight percent of the body-gentle liquid soap composition. The interference pigment of the soft body liquid soap composition preferably comprises at least about 0.1 weight percent of the soft body liquid soap composition, more preferably at least about 0.2 weight percent, yet more preferably at least about 0.5 weight percent, still more preferably at least about 1 weight percent of the composition. When the pigment is applied and rinsed as described in the method of the adhesive strip to determine the deposit of pigments as described in copending U.S. patent application Ser. no. series 60 / 469,075, filed on May 8, 2003, the pigment deposited on the skin is preferably at least 0.5 μg / cm2, more preferably at least 1 μg / cm2, and even more preferably at least 5 μg / cm2. The interference pigments of the present invention are particulates in platelets. The platelet particulates preferably have a thickness not greater than about 5 μm, more preferably not greater than about 2 μm, even more preferably not more than about 1 μm. The platelet particulates preferably have a thickness of at least about 0.02 μm, more preferably at least about 0.05 μm, still more preferably at least about 0.1 μm, still more preferably at least about 0.2 μm. The size of the particle determines the opacity and luster. The size of the particle is determined by measuring the thickness of the diameter of the particulate material. As used herein, the term "diameter" means the greatest distance through the principal axis of the particulate material. The diameter can be determined using any suitable method known in the industry, for example the Mastersizer 2000 particle size analyzer manufactured by Malvern Instruments. The interference pigment preferably has an average diameter of no more than about 200 μm, more preferably not more than 100 μm, still more preferably not more than about 80 μm, still more preferably not more than about 60 μm. The interference pigment preferably has a diameter of at least about 0.1 μm, more preferably at least about 1.0 μm, still more preferably at least about 2.0 μm, still more preferably at least about 5.0 μm. The interference pigment may comprise a multilayer structure. The center of the particulates is a flat substrate with a refractive index (Rl) commonly less than 1.8. A large variety of particle substrates are useful herein. Non-limiting examples are natural mica, synthetic mica, graphite, talc, kaolin, alumina sheet, bismuth oxychioride, silica sheet, glass sheet, ceramic, titanium dioxide, CaSO 4, CaCO 3, BaSO 4, borosilicate and mixtures thereof. , preferably mica, silica and alumina sheets. The surface of a substrate described above is coated with a layer of thin film or with multiple layers of thin films. The thin films are made with high refraction materials. The refractive index of these materials is generally greater than 1.8.

A large variety of thin films can be used herein. The non-limiting examples are TiO2l. Fe2O3, SnO2, Cr2O3, ZnO, ZnS, ZnO, SnO, ZrO2, CaF2, AI2O3, BiOCI and mixtures thereof or in the form of separate layers, preferably TiO2, Fe2O3, Cr2O3 SnO2. In the case of multilayer structures, the thin films may be composed of materials with a high refractive index or may be composed of thin films alternated with high and low Rl materials where the high Rl film constitutes the top layer . The interference color is a function of the thickness of the thin film; The thickness for a specific color can be different between different materials. In the case of TiO2, a layer of 40 nm at 60 nm or a multiple of a whole number of these produces a silvery color, a layer of 60 nm at 80 nm produces a yellow color, a layer of 80 nm at 100 nm produces a red color, a layer of 100 nm at 130 nm produces a blue color and a layer of 130 nm at 160 nm produces a green color. In addition to the interference color, other transparent absorption pigments can be precipitated in the upper part of the Ti02 layer or simultaneously with it. Common materials are red or black iron oxide, ferric ferrocyanide, chromium oxide or carmine. It has been found that in addition to providing brightness, the color of the interference pigment significantly affects the perception of skin tone in humans. In general, the preferred colors are silver, gold, red, green and mixtures of these.

Non-limiting examples of interference pigments useful herein include those supplied by Persperse, Inc. under the tradenames of PRESTIGE®, FLONAC®; those supplied by EMD Chemicals, Inc. under the tradenames TIMIRON®, COLORONA®, DICHRONA® and XIRONA®; and those supplied by Engelhard Co. under the trade names FLAMENCO®, TIMICA®, DUOCHROME®. In one embodiment of the present invention, the surface of the interference pigment is hydrophobic or hydrophobically modified. The contact angle test of the particle, as described in co-pending application serial number 60 / 469,075 filed on May 8, 2003, is used to determine the contact angle of the interference pigments. The greater the contact angle, the greater the hydrophobicity of the interference pigment. The interference pigment of the present invention has a contact angle of at least 60 °, more preferably greater than 80 °, still more preferably greater than 100 °, still more preferably greater than 100 °. The hydrophobically modified interference pigment or HMIP allows to trap the HMIP within the phases and greater deposit of the HMIP. The ratio of the HMIP to a phase varies from 1: 1 to about 1: 70, more preferably from 1: 2 to about 1: 50, more preferably from 1: 3 to about 1: 40, and with the highest preference of 1: 7 to about 1: 35. In one embodiment of the present invention, HMIPs are preferably entrapped within the hydrophobic composition. This requires that the particle size of the hydrophobic composition in general in more is larger than the HMIP. In a preferred embodiment of the invention, the particles of the hydrophobic composition contain only a small number of HMIP per particles of the hydrophobic composition. Preferably this is less than 20, more preferably less than 10, most preferably less than 5. These parameters, the relative size of the HMIP and the approximate number of HMIP particles per particles of the hydrophobic composition can be determined using inspection visual with light microscopy. The HMIP and the hydrophobic composition can be mixed in the composition by means of a premix or separately. For the case of the separate addition, the hydrophobic pigments are divided into the hydrophobic composition during the formulation process. The HMIP of the present invention preferably has a hydrophobic coating that comprises up to about 20 percent, more preferably up to about 15 percent, and even more preferably up to about 10 percent by total weight of the particle. The HMIP of the present invention preferably has a hydrophobic coating comprising at least about 0.1 percent by weight of the total weight of the particle, more preferably at least about 0.5 percent by weight, and even more preferably at least about 1 percent by weight. cent in weight. Non-limiting examples of hydrophobic surface treatments useful herein include silicones, acrylate and silicone copolymers, acrylate polymers, alkylsilane, triisostearate isopropyl titanium, sodium stearate, magnesium myristate, perfluoroalcohol phosphate, perfluoropolymethyl isopropyl ether, lecithin, carnauba wax, polyethylene, chitosan, lauroyl lysine, vegetable lipid extracts and mixtures thereof, preferably silicones, silanes and stearates. Some manufacturers of surface treatments are US Cosmetics, KOBO Products Inc. and Cardre Inc. Method of determining the yield point An AR2000 controlled stress rheometer from TA Instruments can be used to determine the yield point of the component. For the purposes of the present invention, the yield point of the surfactant component or the mild liquid soap composition for the body is the amount of effort required to produce the flow start, where a significant increase in the velocity of the stress occurs. The determination is made at 25 ° C with the measuring system of parallel plate 4 cm in diameter and 1 mm apart. The determination is made by means of the programmed application of a continuous increase of a cutting effort (normally from approximately 0.1 Pa to approximately 500 Pa) during a time interval of 5 minutes, collecting 30 data points per decade of effort in one effort progression evenly spaced. The stress results in a deformation of the sample, and a shear stress versus tension curve can be created. The shear stress (Pa) is plotted on a curve on the x axis versus the stress on the y axis using logarithmic scales for both axes. The composition of mild liquid soap for the body and the surfactant component that are structured exhibit an initial region at low stresses that appears as a straight line when drawn in this way. The yield point is the stress point at which the observed stress deviates by more than 10% from a regression line (ie from predicted stress) extended from the region of the initial straight line in the log-log plot , determined by the linear regression of the transformed log-log stretch-stress data between 0.2-2.0 Pa, and continues to deviate by an amount increasing and accelerating substantially with each subsequent point, so that the flow occurs. The surfactant component is measured before being combined in the composition, or after being combined in the composition by separating the compositions by suitable non-destructive physical separation means. Foam volume test The foam volume of a soft body liquid soap composition, a surfactant component or a structured domain of a body-gentle liquid soap composition is measured using a graduated cylinder and a rotary apparatus. A 1000 ml graduated cylinder marked in 10 ml increments and 36.8 cm (14.5 inches) in height at the 1000 ml mark is used from the inside of its base (eg Pyrex No. 2982). Distilled water (100 grams at 25 ° C) is added to the graduated cylinder. The cylinder is fixed in a rotating device that holds the cylinder with a rotation axis that cuts transversely the center of the graduated cylinder. Inject 0.5 ce of a surfactant component or a mild liquid body soap composition into the graduated cylinder on the cylinder side above the water line, and cover the cylinder. When evaluating the structured surfactant domain, use only 0.25 ce, leaving everything else the same. The cylinder is rotated for 20 full revolutions at a speed of approximately 10 revolutions per 18 seconds, and stops in a vertical position to complete the first rotation sequence. A timer is set to allow 15 seconds for the generated foam to empty. After 15 seconds of this drainage, the first volume of foam is measured at the nearest 10 ml mark by recording the height of the foam in ml to the base (including any water that has been drained to the bottom on which the foam floats). ). If the upper surface of the foam is uneven, the lowest height at which it is possible to see through the half of the graduated cylinder is the first volume of foam (ml). If the foam is so rough that only one or a few foam cells ("bubbles") reach through the entire cylinder, the height at which at least 10 foam cells are required to fill the space is the first volume of foam , also in ml up from the base. Foam cells greater than 2.54 cm (one inch) in any dimension, no matter where they occur, are designated as unfilled air instead of foam. The foam that is received on top of the graduated cylinder but not emptied is also included in the measurement if the foam on top is in its own continuous layer, adding the ml of foam collected there using a ruler to measure the thickness of the layer, to the ml of the foam measured upwards from the base. The maximum height of the foam is 1000 ml (even if the total height of the foam exceeds the 1000 ml mark on the graduated cylinder). 30 seconds after completing the first rotation, a second rotation sequence begins which is identical in speed and duration to the first rotation sequence. The second volume of foam is recorded in the same way as the first, after the same 15 seconds of draining time. A third sequence is completed and the third volume of foam is measured in the same way, with the same pause between each drain and taking the measurement. The result of the foam after each sequence is put together and the total foam volume is determined as the sum of the three measurements, in mL. The instantaneous volume of foam is the result of the first rotation sequence only, in mL, ie the first volume of foam. The compositions according to the present invention perform significantly better in this test than similar compositions in conventional emulsion form. Ultracentrifugation method: The ultracentrifugation method is used to determine the percentage of a structured domain or an opaque structured domain that is present in a body-gentle liquid soap composition comprising a surfactant component. The method comprises separating the composition by means of ultracentrifugation in separate but distinguishable layers. The body-gentle liquid soap composition of the present invention can have multiple distinguishable layers, for example an unstructured surfactant layer, a structured surfactant layer, and a beneficial component layer. First, dispense approximately 4 grams of liquid body soap product into a Beckman centrifuge tube (11x60 mm).

Then, place the centrifuge tubes in an ultracentrifuge (Beckman Model L8-M or equivalent) and adjust the ultracentrifuge to the following conditions: 5235 rad / s (50,000 rpm), 18 hours, and 25 ° C. After centrifuging for 18 hours, determine the relative phase volume by measuring the height of each layer using an electronic digital gauge (within 0.01 mm). First, measure the height as Ha that includes all the materials in the ultracentrifuge tube. Second, measure the height of the beneficial component as Hb Third, the height of the structured surfactant layers are measured as Hc. The beneficial component layer is determined by its low moisture content (less than 10% water as measured by Karl Fischer titration). It usually occurs at the top of the centrifuge tube. The total height of the surfactant layer (Hs) can be measured by means of this equation: H. Ha - Hb The components of the structured surfactant layer may comprise several layers or a single layer. After ultracentrifugation, there is usually an isotropic layer in the bottom or near the bottom of the ultracentrifuge tube. This clear isotropic layer usually represents the unstructured micellar surfactant layer. The layers above the isotropic layer generally comprise a higher concentration of surfactant with larger ordered structures (such as liquid crystals). These structured layers are often opaque to the naked eye, or translucent, or clear. There is usually a distinct phase boundary between the structured layer and the unstructured isotropic layer. The physical nature of the structured surfactant layers can be determined through light microscopy. Structured surfactant layers typically exhibit a distinctive texture under polarized light. Another method to characterize the structured surfactant layer is to use the X-ray diffraction technique. The structured surfactant layer exhibits multiple lines that are often associated mainly with the long spaces of the liquid crystal structure. Finally, the structured domain-volume relationship is calculated based on the following equation: Structured domain relationship - volume = Hc / Hs * 100% If there is no beneficial component phase present, use the total height as the height of the surfactant layer, Hs = Ha. Method of Use The soft body liquid soap compositions of the present invention are preferably applied topically to the desired area of the skin or hair in an amount sufficient to provide effective delivery of the surfactant component, the beneficial hydrophobic material, and the particles to the applied surface. The compositions can be applied directly to the skin or indirectly using a tassel to clean, a washcloth, a sponge or other implement. Preferably, the compositions are diluted with water before, during or after topical application and subsequently rinsed or cleaned from the skin or hair, preferably rinsed with water or cleaned with a water-insoluble substrate combined with water. Therefore, the present invention is also directed to methods that cleanse the skin through the above described application of the compositions of the present invention. The methods of the present invention may also be directed to a method for providing effective delivery of the desired active agent for skin care, and to the benefits resulting from this effective delivery as described herein, to the surface applied to the skin. through the application described above of the compositions of the present invention. Manufacturing Method The soft body liquid soap composition of the present invention can be prepared by any known technique or in any other effective way, suitable for making and formulating the desired product. Non-limiting examples of such methods in that they apply to specific embodiments of the present invention are described in the following examples. It shall be understood that each maximum numerical limitation given in this specification shall include any numerical limitation, as if the numerical limitations below have been explicitly noted herein.

All minimum numerical limits cited in this specification shall include all major numerical limits, as if such numerical major limits had been explicitly quoted herein. All numerical ranges cited in this specification shall include all minor intervals that fall within the larger numerical ranges, as if all minor numerical ranges had been explicitly quoted herein. All parts, ratios and percentages used herein, in the specification, examples and claims are expressed by weight and all numerical limitations are used at the usual level of precision allowed by the industry, unless otherwise indicated.

Examples The following examples further describe and demonstrate the embodiments within the scope of the present invention. The examples are provided for illustrative purposes only and should not be construed as limiting the present invention since many variations thereof are possible without deviating from their spirit and scope.

Examples 1-6 The following described examples are non-limiting examples of soft compositions for the body.

The compositions described above can be prepared by a conventional combination and mixing techniques. Combine the following ingredients: distilled water, guar hydroxypropyltrimonium chloride, citric acid, anhydrous USP, and glycerin. Heat the mixture to 65-70 ° C while stirring the mixture. Keep stirring until a homogeneous solution is formed. Once homogenous, keep the temperature at 65-70 ° C and add the following ingredients: PEG 90M. Hampene NA2 (Dissolvine NA-2X), Trideceth sodium sulfate, sodium lauroamphoacetate, steareth-2. Then add petrolatum and mix until the mixture becomes homogeneous. Once homogenous, add sodium chloride and mix until the mixture becomes homogeneous. Adjust the pH to 5.8-6.2 using citric acid. Finally, cool the mixture to 48 ° C and add the following ingredients: perfume and DMDM hydantoin. The following comparative examples, unlike the mild body soap composition described in the present invention, demonstrate the superior performance provided by the composition of the present invention.

Comparative Example 1 A liquid soap for the body is obtained having the following ingredients: water, sunflower oil, sodium laureth sulfate, sodium lauroamphoacetate, glycerin, petrolatum, lauric acid, cocamide MEA, fragrance, guar hydroxypropyltrimonium chloride, alcohol lanolin, citric acid, DMDM hydantoin, Tetrasodium EDTA, etidronic acid, titanium dioxide, dipolyhydroxystearate PEG-30. Liquid body soap is marketed under the brand name Dove ™ All Day Moisturizing Body Wash by Lever Bros. Co., Greenwich CT, USA. Liquid body soap contains a structured domain volume ratio of at least approximately 42% and has a total foam volume of 1410 mL, and an instantaneous foam volume of 310 mL, and a yield strength of 7 Pa .

Comparative Example 2 A liquid soap for the body is obtained having the following ingredients: water, petrolatum, ammonium laureth sulfate, sodium lauroamphoacetate, ammonium lauryl sulfate, lauric acid, fragrance, trihydroxystearin, citric acid, hydroxypropyl trimon guar chloride, benzoate of sodium, DMDM hydantoin, disodium EDTA, PEG-14M. Liquid body soap is marketed under the brand name Olay® Daily Renewal Moisturizing Body Wash by Procter & Gamble, Inc., Cincinnati, OH, USA. Liquid body soap contains a structured domain volume ratio of at least about 64% and has a total foam volume of 1630 mL, an instantaneous foam volume of 410 mL, and a yield strength of 2.8 Pa. All documents cited in the Detailed Description of the invention, in their pertinent part, are incorporated herein by reference; the citation of any document should not be construed as being prior industry with respect to the present invention.

While particular embodiments of the present invention have been illustrated and described, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention. It has been intended, therefore, to cover in the appended claims all changes and modifications that are within the scope of the invention.

Claims (16)

NOVELTY OF THE INVENTION CLAIMS

1. A body-gentle liquid soap composition comprising a surfactant component; the composition is characterized by a surfactant or a mixture of surfactants; wherein the soft body liquid soap composition has a structured domain volume ratio of at least about 70%; and wherein the surfactant component provides a total volume of foam of at least about 600 mL.

2. The soft body liquid soap composition according to claim 1, further characterized in that the soft body liquid soap composition has a structured domain volume ratio of at least about 75%, preferably of at least about 80%, more preferably at least about 85%.

3. The soft body liquid soap composition according to any of the preceding claims, further characterized in that the surfactant component provides a total foam volume of at least about 800 mL.

4. The soft body liquid soap composition according to any of the preceding claims, further characterized in that the surfactant component provides a yield point greater than about 0.5 Pascal.

5. The body-gentle liquid soap composition according to any of the preceding claims, further characterized in that it comprises from about 1% to about 95%, by weight of the composition, of the surfactant component, wherein the surfactant is selected from the group comprising anionic surfactant, nonionic surfactant, zwitterionic surfactant, cationic surfactant, soap, and mixtures thereof.

6. The soft body liquid soap composition according to any of the preceding claims, further characterized in that the anionic surfactant is selected from the group comprising alkyl ether sulphates, alkylsulfonates and mixtures thereof.

The soft body liquid soap composition according to any of the preceding claims, further characterized in that the amphoteric surfactant is selected from the group consisting of sodium lauroanfoacetate, sodium cocoamphoacetate, disodium lauroamphoacetate, and disodium cocodialfoacetate, and mixtures thereof. these.

8. The body-gentle liquid soap composition according to any of the preceding claims, further characterized in that the non-ionic surfactant is selected from the group comprising glyceryl monohydroxystearate, steareth-2, propylene glycol stearate, sorbitan monostearate, glyceryl stearate, laureth-2, and mixtures thereof.

9. The soft body liquid soap composition according to any of the preceding claims, further characterized in that it comprises from about 0.1% to about 50%, by weight of the surfactant component, of the non-ionic surfactant.

10. The body-gentle liquid soap composition according to any of the preceding claims, further characterized in that the non-ionic surfactant has a hydrophilic-lipophilic balance of from about 1.5 to about 15.0.

11. The soft body liquid soap composition according to claim 1, further characterized in that the composition comprises a structured domain, wherein the structured domain is an opaque structured domain, wherein the opaque structured domain is a lamellar phase.

12. The liquid body soap composition according to any of the preceding claims, further characterized in that it further comprises an electrolyte.

13. The soft body liquid soap composition according to any of the preceding claims, further characterized in that the composition is practically free of alkylamines and alkanolamides.

The soft body liquid soap composition according to any of the preceding claims, further characterized in that the composition further comprises a beneficial component selected from the group comprising lipids, hydrocarbons, fats, oils, hydrophobic plant extracts, fatty acids , silicone materials, vitamins and derivatives thereof; sun protection agents; conservatives; anti-acne medications; antioxidants; chelating agents and sequestering agents; essential oils, agents of perception by the skin, and mixtures of these.

15. The body-gentle liquid soap according to any of the preceding claims, further characterized in that it further comprises a particle; wherein the particle is selected from the group comprising natural, synthetic, semi-synthetic, hybrid and combinations thereof.

16. A method to provide benefits for the skin or hair; the method comprises the steps of: a) dispensing an effective amount of a soft liquid body soap composition according to claim 1 onto an implement selected from the group comprising a tassel for cleaning, a wash cloth, sponge, and the human hand; b) topically apply the composition to the skin or hair using the implement; and c) removing the composition of the skin or hair by rinsing the skin or hair with water.