Personal care composition containing bio-surfactants

Abstract

A mild personal care composition comprising an effective amount of a glycolipid biosurfactant, an amphoteric surfactant, and no thickener. The glycolipid biosurfactant may be a rhamnolipid or sophorolipid surfactant that provides good cleansing properties and exhibits consumer desired foam properties. The glycolipid surfactant may be a mixture of sophorolipid surfactants having a hydrophilic / lipophilic balance (HLB) of about 2 to about 7 and an HLB of about 15 to about 20. The composition also comprises a sulfate-free anionic surfactant, an amphoteric surfactant, and a dermatologically acceptable carrier.

Description

[Technical Field]

[0001] This disclosure generally relates to sulfate-free personal care compositions containing glycolipid surfactants. More specifically, this disclosure relates to sulfate-free personal care compositions containing mixtures of high-HLB and low-HLB sophorolipid surfactants and / or rhamnolipid surfactants, and that do not contain thickeners. [Background technology]

[0002] Human hair becomes dirty due to contact with the surrounding environment and sebum secreted by the scalp. Dirty hair can have an undesirable feel and / or appearance. As a result, people may wash their hair with shampoo compositions that restore it to a clean and attractive appearance. Many conventional shampoos use sulfated surfactants, such as sodium lauryl sulfate and / or sodium laureth sulfate, as cleansing surfactants for washing hair. While sulfated surfactants are generally good at removing oil and other contaminants from hair, they are sometimes associated with a poor quality hair feel after washing, dry hair, and / or dry skin. This is commonly referred to as "harshness," and harsh shampoos are not well-received by consumers.

[0003] Removing sulfated surfactants provides a less irritating cleansing composition, but this can have drawbacks, particularly for conditioning shampoos (i.e., shampoos that provide cleansing and conditioning effects to the hair). Conditioning shampoos generally use cationic conditioning polymers to form coacervates with anionic surfactants during use, which adhere to the hair and provide the easier wet combing and detangling effect desired by the user. However, the formation of coacervates confines some of the surfactant within the coacervates, thus reducing the amount of surfactant available to provide foaming and cleansing effects.

[0004] Surfactants that do not contain sulfates, such as isethionate-based surfactants, are sometimes used to avoid some of the perceived harshness of sulfated surfactants. For example, Indian Patent Application No. 3544 / DEL / 2015 discloses that sodium cocoyl isethionate (SCI) is a sulfate-free primary surfactant selected for its low irritation to hair and skin. However, non-sulfated surfactants tend to be less effective than sulfated surfactants in foaming and cleansing, and the addition of cationic polymers can further burden surfactant systems that do not contain sulfates, resulting in further reduction of foaming and cleansing. In addition, SCI is susceptible to hydrolysis, and as a result, its foaming, washing, and stability may decrease, so it may not be suitable for use at acidic pH (e.g., <pH 6).

[0005] In addition to increasing low irritation, it is also desirable to provide a more environmentally friendly personal cleansing composition. Surfactants used in conventional cleansing compositions often originate from petrochemical products that are not perceived as environmentally friendly. However, sustainability in the use of cosmetic ingredients has become increasingly important and is being demanded by more consumers and manufacturers of cosmetic cleansing agents. The use of certain sustainable or natural-derived surfactants is known. However, natural-derived surfactants sometimes involve insufficient foaming and washing performance. In addition, the use of natural-derived surfactants may introduce instability into the composition.

[0006] Personal care compositions having a sulfate-free surfactant system generally contain thickeners (e.g., water-soluble polymers and inorganic salts) to increase the viscosity of the composition. However, these added thickeners can have an adverse effect on other important performance attributes such as the spread of the product, the rapidity of foam generation, and the feel of the product during rinsing. The added thickeners can also make it more difficult to deliver foaming versions of the composition, for example, via an aerosol device or a pump.

Prior Art Documents

Patent Documents

[0007]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0008] Therefore, it is desirable to provide a personal cleansing composition having a surfactant system with low irritation containing a natural-derived surfactant having good foaming properties and cleaning properties. Also, it is desirable that such a composition does not contain a sulfated surfactant. Further, it is desirable that such a composition provides good hair conditioning. For example, it may also be desirable to formulate such a composition without using rheology modifiers and thickeners that adversely affect other important performance attributes such as product spread, rapidity of foam generation, and the feel of the product during rinsing. For example, the absence of a thickener and low product viscosity may also be advantageous for delivering a foaming version of the composition via an aerosol device or a pump.

Means for Solving the Problems

[0009] Disclosed herein is a personal care composition comprising a glycolipid surfactant, a non-sulfate anionic surfactant, and an amphoteric surfactant. The composition does not contain a thickener and has a pH of 5.8 to 7.2. In some embodiments, the composition does not contain and includes a first sophorolipid surfactant having a hydrophilic / lipophilic balance (HLB) of 2 to 7 and a second sophorolipid surfactant having an HLB of 15 to 20.

Modes for Carrying Out the Invention

[0010] Shampoos containing sulfated surfactants are generally recognized as providing desirable cleansing properties, including the removal of sebum and dirt and good lathering. However, sulfated surfactants are generally perceived as harsh. It has now been discovered that replacing sulfated surfactants in personal cleansing compositions with glycolipid surfactants alone or in combination with other non-sulfated surfactants can provide desirable cleansing properties without the harshness associated with sulfated surfactants.

[0011] References to “embodiments” in this specification mean that certain materials, features, structures, and / or properties described in relation to that embodiment are included in at least one embodiment, and optionally many embodiments, but not that all embodiments incorporate the described materials, features, structures, and / or properties. Furthermore, materials, features, structures, and / or properties may be combined in any preferred manner across different embodiments, and materials, features, structures, and / or properties may be excluded from or substituted for those described. Accordingly, the embodiments and aspects described herein may include or be combined with elements or components of other embodiments and / or aspects, even if they are not explicitly illustrated in combination, unless otherwise stated or described as incompatible.

[0012] All percentages of ingredients described herein are based on the weight of the cosmetic composition and, unless otherwise specified, are based on the level of the target ingredient excluding carriers or by-products that may be included in commercially available materials. Unless otherwise indicated, all ratios are by weight. All ranges include their endpoints and are combinable. The number of significant digits is not intended to represent a limitation on the quantity being expressed, nor on the accuracy of the measured value. Unless specifically indicated otherwise, all quantities are understood to be modified by the term "about." Unless otherwise indicated, all measurements are understood to have been made under ambient conditions of approximately 25 °C, and "ambient conditions" means conditions of about 1 atmosphere and about 50% relative humidity. All numerical ranges include narrower ranges, and the upper and lower limits of the explicitly stated ranges are interchangeable to further create ranges not explicitly stated.

[0013] The compositions of the present invention can include, consist essentially of, or consist of the essential components and optional components described herein. As used herein, "consisting essentially of" means that a composition or component can include additional components, but only if the additional components do not substantially alter the basic and novel characteristics of the claimed composition or method. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

[0014] Definitions "About" modifies a particular value by referring to a range of ±20% or less (e.g., ±15% or less, 10% or less, or even 5% or less) of the stated value.

[0015] "Applying" or "application" as used in connection with a composition means applying or spreading the composition onto a human keratin surface such as the skin or hair.

[0016] "Charge density" (CD) means the ratio of positive charge on a polymer to the molecular weight of the polymer.

[0017] "Cleansing composition" refers to a personal care composition or product intended for use in washing body surfaces such as skin or hair. Some non-exclusive examples of cleansing compositions include shampoos, conditioners, conditioning shampoos, shower gels, liquid hand cleansers, and facial cleansers.

[0018] "Cosmetic agents" means any substance, or any component thereof, intended to be rubbed, poured, sprinkled, sprayed, introduced, or otherwise applied to the body or any part thereof of a mammal in order to produce a cosmetic effect. Cosmetic agents may include substances and food additives that are generally recognized as safe (GRAS) by the U.S. Food and Drug Administration.

[0019] The term "gel network phase" or "dispersed gel network phase" refers to a layered or vesicular solid crystalline phase comprising at least one aliphatic alcohol, at least one gel network surfactant, and a liquid support. The layered or vesicular phase may be formed as alternating layers, with one phase comprising the aliphatic alcohol and the gel network surfactant and the other phase being the liquid support.

[0020] "Solid crystalline material" refers to the crystalline structure of a layered or vesicular phase at ambient temperature, caused by a phase whose melting transition temperature is below that of the layered or vesicular phase. For example, the melting transition temperature of a layered or vesicular phase may be about 30°C or higher (i.e., slightly above room temperature). The melting transition temperature can be measured by differential scanning calorimetry, a conventional measurement method known to those skilled in the art.

[0021] "Suitable for application to human hair" means that the personal care composition or its components are acceptable for use in contact with human hair, scalp, and skin without excessive toxicity, incompatibility, instability, allergic reactions, etc.

[0022] "Substantially does not contain" means that the composition or component contains less than 3% by weight (e.g., less than 2% by weight, less than 1% by weight, or even less than 0.5% by weight) of the subject material. "Does not contain" means that the composition of the component contains 0% of the subject material.

[0023] A "sulfate surfactant" refers to a surfactant that contains a sulfate portion. Some non-exclusive examples of sulfate surfactants are sodium lauryl sulfate, sodium laureth sulfate, ammonium lauryl sulfate, and ammonium laureth sulfate.

[0024] Personal care composition The personal care compositions herein include glycolipid surfactants, amphoteric surfactants, non-sulfate anionic surfactants, and optionally other components commonly found in compositions of the type described. Isesionates (e.g., and / or taurate anionic surfactants (e.g., sodium cocoyl isethionate, sodium cocoyl taurate, or sodium methyl cocoyl taurate)) may be particularly preferred as non-sulfate anionic surfactants. The personal care compositions herein are free of thickeners and, in some cases, free of sarcosinate surfactants (e.g., sodium lauroyl sarcosinate, sodium myristoyl sarcosinate, potassium myristoyl sarcosinate, sodium cocoyl sarcosinate, sodium oleyl sarcosinate, ammonium oleyl sarcosinate, and triethanolamine lauroyl sarcosinate).

[0025] The personal care compositions described herein may be provided in various product forms, such as solutions, suspensions, shampoos, conditioners, lotions, creams, gels, toners, sticks, sprays, aerosols, ointments, cleansing liquids, solid bars, pastes, foams, mousses, shaving creams, wipes, strips, patches, hydrogels, film-forming products, and facial and skin masks (with and without insoluble sheets). The form of the composition may depend on a selected dermatologically acceptable specific carrier. In some embodiments, the personal care compositions described herein may include a dispersed gel network phase, combined with a cleansing glycolipid surfactant, to provide a less irritating but effective cleansing effect on soiled hair.

[0026] In some embodiments, the composition may be free of or substantially free of thickeners. For example, the composition may contain less than 1% (e.g., 0% to 0.8%, 0.05% to 0.5%, or even 0.1% to 0.3%) of an inorganic salt thickener, such as sodium chloride, potassium chloride, sodium sulfate, ammonium chloride, sodium bromide, or combinations thereof. In sulfate-free cleansing compositions, inorganic salts may introduce instability into the composition by assisting in the formation of undesirable coacervates between the anionic surfactant and the cationic polymer before the composition is intended for use. Inorganic salts and other thickeners may have undesirable effects on the rheological and performance properties of the composition, as well as on the quality of the product as perceived by consumers.

[0027] Other examples of thickeners that may be excluded or substantially excluded from this composition include homopolymers, acrylic copolymers, or methacrylate copolymers (e.g., acrylate / C10-C30 alkyl acrylate crosspolymers) based on acrylic acid, methacrylic acid, or other related derivatives (e.g., polyacrylate, polymethacrylate, polyethyl acrylate, and polyacrylamide), crosslinked acrylic polymers (e.g., carbomers), hydrophobic modified cellulose derivatives; hydrophobic modified alkali-swelling emulsions (e.g., hydrophobic modified polyacrylate, polyacrylic acid, polyacrylamide, and polyethers), cellulose and its derivatives (e.g., microcrystalline cellulose, carboxymethylcellulose, methylcellulose, ethylcellulose). Examples include rose, guar and its derivatives (e.g., hydroxypropyl guar and hydroxypropyl guar hydroxypropyltrimonium chloride), polyethylene oxide, polypropylene oxide, polyvinylpyrrolidone, polyvinyl alcohol and its derivatives, polyethyleneimine and its derivatives, silica (e.g., fumed silica, precipitated silica and silicone-surface-treated silica), water-swellable natural polymers (e.g., xanthan gum, guar gum, gum arabic, carob gum, and locust bean gum), sorbitol, carrageenan, pectin, agar, starch (derived from rice, corn, potato, wheat, etc.) and starch derivatives (e.g., carboxymethyl starch, methylhydroxypropyl starch). Further examples of thickeners, rheological modifiers, and suspending agents that may be excluded from this composition are disclosed in U.S. Patent No. 10,258,555.

[0028] It should be understood that embodiments of this composition that include materials commonly used as rheological modifiers (such as thickeners) are intended herein. In such embodiments, the materials may be included to provide functions or benefits other than thickening, or may be particularly selected because they do not interact undesirably with other components in the composition (such as forming coacervates before use).

[0029] Glycolipid surfactants The personal care compositions described herein include one or more detergency glycolipid surfactants to help provide a cleaning effect on target body surfaces such as soiled hair and skin. Glycolipid surfactants are biosurfactants that are naturally produced by certain microorganisms and generally consist of a carbohydrate moiety (head) attached to a fatty acid (tail). Without being bound by theory, glycolipid surfactants enable the surfactant to decompose and form micelles around the oils and other contaminants in the hair, which can then be washed away with water, facilitating cleaning due to their amphiphilic nature. Glycolipid surfactants are generally considered to be less irritating than sulfate-based surfactants. Suitable glycolipid surfactants for use herein can be described according to the following general formula, including their salts.

[0030] Formula I:

[0031]

Chemical formula

[0032]

Chemical formula

[0033] Formula II:

[0034] [ka] In the formula, a and b are independently 1 or 2, and n is an integer between 4 and 10, R 1 is H or a cation, and R 2 is H or the following group CH3(CH2) m CH=CH--CO m is an integer between 4 and 10, and m and n may be the same or different.

[0035] Formula III:

[0036] [ka] In the formula, R 3 , R 4 , R 5 , and R 8 As defined above, R 3 and R 4 At least one of them is an acetyl group.

[0037] Formula IV:

[0038] [ka] In the formula, R 5 It is CH3, and R 10 H is R 8It is a saturated straight-chain hydrocarbon chain having 8 to 10 carbon atoms.

[0039] Suitable glycolipid surfactants for use herein may be selected from rhamnolipids, sophorolipids, glucoselipids, celluloslipids, trehaloselipids, salts thereof, and combinations thereof. Some non-limiting examples of rhamnolipids and sophorolipids that may be suitable for use herein are disclosed in U.S. Patent Application Publication 2004 / 0152613, U.S. Patent No. 9,271,908, and International Publication 2020 / 016097. Commercially available glycolipids that may be suitable for use herein include sophorolipid surfactants of the FERMA SH and FERMA SL brands from Locus Performance Ingredients, sophorolipid surfactants of the SPECBIO SL brand from Spec-Chem Industry, Inc., and rhamnolipid surfactants of the RHEANCE ONE brand from Evonik. Glycolipid surfactants may be present in the composition at concentrations of 0.1% to 10% (e.g., 0.5% or even 1% to 5%).

[0040] Co-surfactants The personal care compositions herein may optionally include auxiliary surfactants selected from anionic surfactants, amphoteric surfactants, zwitteric surfactants, nonionic surfactants, and combinations thereof. Some non-limiting examples of anionic surfactants include non-sulfated anionic surfactants, e.g., isethionates, carboxylates, sulfonates (e.g., alpha-olefin sulfonates, linear alkylbenzene sulfonates, alkylglyceryl sulfonates, sodium lauryl glucoside hydroxypropyl sulfonate), sulfosuccinates, sulfoacetates, sulfolaurates, amino acid surfactants (e.g., glycinates, taurates, alaninates, glutamates), lactate surfactants and lactylate surfactants (e.g., sodium lauroyl lactalyte), phosphate ester surfactants, and combinations thereof.

[0041] Some non-limiting examples of amphoteric and / or zwitterionic surfactants include derivatives of aliphatic secondary and tertiary amines in which one of the aliphatic substituents contains 8 to 18 carbon atoms and one of the aliphatic substituents contains an anionic group such as a carboxy, sulfonate, phosphate, or phosphonate group. Examples include amphoacetates, amphodiacetates, betaines, amidebetaines (e.g., cocamidopropyl betaine and lauramidopropyl betaine), amidesulfobetaines, propionates, sultaines, hydroxysultaines, and combinations thereof.

[0042] Some non-limiting examples of nonionic surfactants include glyceryl esters of alkanates, polyglyceryl esters of alkanates, propylene glycol esters of alkanates, sorbitol esters of alkanates, alkanolamides, alkoxylated amides, alkyl glycosides, alkyl polyglucosides, acyl glucamides, amine oxides, and combinations thereof. Some particularly preferred examples of nonionic surfactants include cocamides, cocamide MEA, PPG-2 cocamide, PPG-2 hydroxyethyl cocamide, PPG-2 hydroxyethyl isostearamide, lauroyl / myristoyl methyl glucamide, capryloyl / caproyl methyl glucamide, cocoyl methyl glucamide, decyl glucoside, coco glucoside, lauryl glucoside, lauramine oxide, cocamine oxide, and combinations thereof.

[0043] More specific examples of the optional cosurfactants described above are disclosed in U.S. Patent Application Publication No. 2019 / 0105246, No. 2018 / 0098923, U.S. Patent No. 9,271,908, International Publication No. 2020 / 016097, and McCutcheon's Emulsifiers and Detergents, 2019, MC Publishing Co.

[0044] Optional additional surfactants, if present, may be included in the personal care composition to provide the desired cleaning and foaming performance. Any additional surfactants must be physically and chemically compatible with the other components of the personal care composition described herein and must not excessively impair the stability, aesthetics, or performance of the product. In some embodiments, additional surfactants may be present in the personal care composition at concentrations of 5% to 50% (e.g., 8% to 30%, 9% to 25%, or even 10% to 17%).

[0045] Dispersed gel network phase The personal care compositions described herein may include a dispersed gel network phase in combination with a cleansing surfactant to provide a cleansing and / or conditioning effect to the composition. The gel network phase can impart a cleansing effect to the personal care composition due to its hydrophobicity. Specifically, although not theoretically bound, it is believed that the hydrophobic nature of the dispersed gel network causes the gel network to dissolve hydrophobic dirt such as oil. Once the dirt is dissolved in the gel network, the gel network can be rinsed off from the hair or skin.

[0046] A suitable dispersed gel network can be formed by combining an aliphatic alcohol and a gel network surfactant in a suitable ratio and heating the dispersion to a temperature above the melting point of the aliphatic alcohol. During this mixing process, the aliphatic alcohol melts, distributing the gel network surfactant and allowing water to be incorporated into the aliphatic alcohol. The mixing of the gel network surfactant and the aliphatic alcohol also transforms droplets of isotropic aliphatic alcohol into droplets of a liquid crystalline phase. Subsequently, when the mixture is cooled to a temperature below the melting transition temperature of the aliphatic alcohol, the liquid crystal phase is converted into a solid crystalline gel network. Further details of suitable gel networks are described in GMEccleston, "Functions of Mixed Emulsifiers and Emulsifying Waxes in Dermatological Lotions and Creams," Colloids and Surfaces A: Physiochem. and Eng. Aspects 123-124 (1997) 169-182; and in GM Eccleston, "The Microstructure of Semisolid Creams," Pharmacy International, Vol. 7, 63-70 (1986), which are incorporated herein by reference, respectively.

[0047] In some embodiments, it may be desirable to pre-form a gel network phase, meaning that at least 50 percent of the mixture of aliphatic alcohol, gel network surfactant, and liquid carrier is substantially in a solid crystalline phase before being added to the other components of the personal care composition. When a dispersed gel network is pre-formed, the gel network component can be prepared as a separate premix, which, after cooling, can then be incorporated together with the cleansing surfactant and any other components of the personal care composition. While not bound by theory, it is believed that incorporating a pre-formed gel network component with the cleansing surfactant and other components of the personal care composition will result in the formation of a substantially equilibrium lamellar dispersion (ELD) in the final composition.

[0048] ELD is a dispersed, layered, or vesicular phase obtained from a pre-formed gel network component that is substantially equilibrated with a cleansing surfactant, a carrier, and other optional components of the personal care composition. This equilibration occurs when the pre-formed gel network component is incorporated into the other components of the personal care composition and can be effectively completed within approximately 24 hours after incorporation. If the components containing the gel network component (i.e., aliphatic alcohol, gel network surfactant, and liquid carrier) are added as individual components along with the other components of the personal care composition in a single mixing step, and not as a separate pre-formed gel network component, then ELD will not be formed.

[0049] The presence of gel networks in premixes and personal care compositions can be confirmed by means known to those skilled in the art. For example, gel networks can be identified using X-ray analysis, optical microscopy, electron microscopy, and differential scanning calorimetry. A preferred X-ray analysis method is described in U.S. Patent Application Publication No. 2006 / 0024256.

[0050] In some embodiments, the scale size of the dispersed gel network in the personal care composition may be in the range of about 10 nm to about 500 nm (e.g., 0.5 μm to 10 μm or 10 μm to about 150 μm).

[0051] The scale-size distribution of dispersed gel networks in personal care compositions can be measured by laser scattering techniques using a Horiba Model LA910 laser scattering particle size distribution analyzer (Horiba Instruments, Inc., Irvine, California, USA). The scale-size distribution in personal care compositions can be measured by forming a mixture of 1.75 g of personal care composition with 30 mL of 3% NH4Cl, 20 mL of 2% Na2HPO4·7H2O, and 10 mL of 1% laureth-7. This mixture is then stirred for 5 minutes. Depending on the individual Horiba instrument used, a sample ranging from 1 to 40 mL is taken and then injected into a Horiba instrument containing 75 mL of 3% NH4Cl, 50 mL of 2% Na2HPO4·7H2O, and 25 mL of 1% laureth-7 until the index of the Horiba instrument reaches 88–92%T, which is required for scale-size measurement. Once this is achieved, a scale-size measurement is obtained by measuring through a Horiba instrument two minutes after circulation. Subsequent measurements are performed using a sample of the personal care composition heated to a temperature above the melting transition temperature of all fatty substances present in the shampoo composition to ensure that the dispersed gel network components are melted. These subsequent measurements provide the scale-size distribution for all remaining substances in the personal care composition, which can then be compared to the scale-size distribution of the initial sample to aid in analysis.

[0052] Gel network aliphatic alcohols The dispersed gel network may contain 0.05% by weight or more (e.g., 0.05% to about 25%, 0.5% to 20%, or 1% to 8%) of an aliphatic alcohol (e.g., C10 to C40 aliphatic alcohols) of the composition. The aliphatic alcohol may be linear or branched and may be saturated or unsaturated. As can be understood, suitable aliphatic alcohols may be of natural, plant, or synthetic origin. In some embodiments, it may be desirable to mix several aliphatic alcohols, such as a mixture of cetyl alcohol and stearyl alcohol in a ratio of 20:80 to 80:20, in order to provide a dispersed gel network phase having a melting transition temperature of about 38°C or higher. Some non-limiting examples of suitable aliphatic alcohols for use herein include cetyl alcohol, stearyl alcohol, arachidyl alcohol, behenyl alcohol, C10 to C40 aliphatic alcohol. 21 Fatty alcohol (1-heneycosanol), C 23 Fatty alcohol (1-tricosanol), C 24 Aliphatic alcohols (lignoceryl alcohol, 1-tetracosanol), C 26 Faliphatic alcohol (1-hexacosanol), C 28 Faliphatic alcohol (1-octacosanol), C 30 Aliphatic alcohol (1-triacontanol), C 20~40 Alcohols (e.g., Performacol® 350 and 425 Alcohols available from New Phase Technologies), C 30~50 Alcohol (e.g., Performacol® 550 Alcohol), C 40~60 Examples include alcohols (e.g., Performacol® 700 Alcohol) and mixtures thereof.

[0053] Gel network surfactant The gel network phase may be present in an amount of 0.01% to 15% by weight of the composition (for example, 0.1% to about 10% by weight, or 0.2% to about 5% by weight). The gel network surfactant can be combined with an aliphatic alcohol and a liquid carrier to form a gel network premix, which can then be added to the other components of the personal care composition.

[0054] In some embodiments, the total weight of the gel network surfactant and aliphatic alcohol is 0.5% to about 15% (e.g., 1% to 10%) of the personal care composition. In some embodiments, the gel network surfactant may be included in the gel network in a desired weight ratio relative to the aliphatic alcohol. For example, the ratio of aliphatic alcohol to gel network surfactant may be 1:5 to 100:1 (e.g., 1:1 to 40:1, 2:1 to 20:1, or even 3:1 to 10:1).

[0055] Gel network surfactants can be any suitable anionic, zwitterionic, amphoteric, cationic, and nonionic surfactants that are substantially sulfate-free. Detergent surfactants and gel network surfactants may be the same or different. In some embodiments, gel network surfactants have hydrophobic end groups having a chain length of 10 to 40 carbon atoms. The hydrophobic end groups may be alkyl, alkenyl (containing up to three double bonds), alkyl aromatic, or branched alkyl. Mixtures of more than one gel network surfactant may also be used. Some non-limiting examples of gel network surfactants are disclosed in U.S. Patent Application Publication 2006 / 0024256.

[0056] Liquid carriers for gel network phases In some embodiments, the dispersed gel network phase may contain a suitable liquid carrier in an amount of 0.05% to 95% by weight of the personal care composition. The liquid carrier may be water or another suitable solvent. The carrier and the gel network surfactant may be selected to act together to swell the aliphatic alcohol, which results in the formation and stability of the gel network phase. Suitable solvents are any solvent that can be used in place of or in combination with water in the formation of the gel network phase. In some embodiments, the liquid carrier may be substantially free of solvents other than water. In some embodiments, the liquid carrier for the dispersed gel network phase may be included in a weight ratio of about 1:1 to the aliphatic alcohol of the dispersed gel network phase.

[0057] Cationic polymers The personal care compositions herein may contain 0.05% to 3% (e.g., 0.1% to 2% or even 0.2% to 0.8%) of a cationic polymer to provide a conditioning effect (e.g., appearance, feel, or adhesion) to the hair or skin. The cationic polymer may have a weight-average molecular weight of 100 kDa to 5 MDa (e.g., 500 kDa to 4 MDa, 1 MDa to 3 MDa, or even 1.2 MDa to 2 MDa) and a charge density of 0.4 meq / g to 12 meq / g (e.g., 0.4 to about 2, about 0.7 to about 2, and about 0.6 to about 1.6). The charge density can be measured at the pH of the intended use of the personal care composition, which may be pH 3 to pH 9 (e.g., pH 4 to 8 or pH 4.5 to 6.5).

[0058] Cationic polymers should be selected to form coacervates with anionic surfactants and optionally chosen cosurfactants during the intended use of the personal care composition. Cationic polymers may include a cationic nitrogen-containing moiety, such as a quaternary ammonium, or a cationic protonated amino moiety. Cationic protonated amines may be primary, secondary, or tertiary amines, depending on the specific chemical species and the selected pH of the composition. Anionic counterions can be used in combination with cationic polymers, as long as the polymer remains soluble. Examples of suitable counterions include halide counterions (e.g., chlorides, fluorides, bromides, iodides). Some non-limiting examples of cationic polymers include copolymers of water-soluble spacer monomers such as acrylamide, methacrylamide, alkyl and dialkylacrylamide, alkyl and dialkylmethacrylamide, alkyl acrylate, alkyl methacrylate, vinylcaprolactone, or vinylpyrrolidone with vinyl monomers having cationic protonated amines or quaternary ammonium functional groups. Some non-limiting examples of cationic protonated amino and quaternary ammonium monomers include vinyl compounds substituted with dialkylaminoalkyl acrylates, dialkylaminoalkyl methacrylates, monoalkylaminoalkyl acrylates, monoalkylaminoalkyl methacrylates, trialkylmethacrylatexalkylammonium salts, trialkylacryloxalkylammonium salts, diallyl quaternary ammonium salts, and vinyl quaternary ammonium monomers having cyclic cationic nitrogen-containing rings such as pyridinium, imidazolium, and quaternized pyrrolidone, for example, alkylvinylimidazolium, alkylvinylpyridinium, and alkylvinylpyrrolidone salts.

[0059] An additional non-limiting example of a cationic polymer is the copolymer of 1-vinyl-2-pyrrolidone and 1-vinyl-3-methylimidazolium salt (in the industry, the Personal Care Products Council). Examples of amphoteric copolymers of acrylic acid include polyquaternium-16 (as referred to by the Council, PCPC), a copolymer of 1-vinyl-2-pyrrolidone and dimethylaminoethyl methacrylate (polyquaternium-11), for example, a dimethyldiallylammonium chloride homopolymer, a copolymer of acrylamide and dimethyldiallylammonium chloride (polyquaternium-6 and polyquaternium-7), a cationic diallyl quaternary ammonium-containing polymer, a copolymer of acrylic acid and dimethyldiallylammonium chloride (polyquaternium-22), a terpolymer of acrylic acid with dimethyldiallylammonium chloride and acrylamide (polyquaternium-39), and a terpolymer of acrylic acid with methacrylamidopropyltrimethylammonium chloride and methyl acrylate (polyquaternium-47). In certain embodiments, preferred cationic substituted monomers include cationic substituted dialkylaminoalkylacrylamides, dialkylaminoalkylmethacrylamides, and combinations thereof.

[0060] In certain embodiments, the cationic monomer may be polymethylacrylamidopropyltrimonium chloride, available from Solvay under the trademark Polycare® 133. In certain embodiments, copolymers of cationic monomers are also preferred. In such embodiments, the charge density of the total copolymer may be about 2.0 to about 4.5 meq / gm.

[0061] Other cationic polymers include polysaccharide polymers such as cationic cellulose derivatives and cationic starch derivatives. In certain embodiments, the cationic cellulose polymer can be selected from salts of hydroxyethylcellulose reacted with trimethylammonium substituted epoxides, referred to as polyquaternium-10 and available from Dow Chemical Company as UCARE® JR-30M, KG-30M, and LR-30M. Another example of a cationic cellulose polymer is a polymeric quaternary ammonium salt of hydroxyethylcellulose reacted with lauryldimethylammonium substituted epoxides, referred to in the PCPC as polyquaternium-24.

[0062] Further examples of cationic polymers include the Jaguar® series of guar hydroxypropyltrimonium chloride, available from Solvay (Brussels, Belgium), and cationic guar gum derivatives such as the N-Hance® series from Ashland (Wilmington, Delaware). Additional disclosures of cationic guar gum derivatives can be found in U.S. Patent No. 6,930,078.

[0063] In some cases, the cationic polymer may include synthetic cationic polymers or derivatives thereof present in concentrations of 0.025% to 5%. Preferred synthetic cationic polymers are generally water-soluble or water-dispersible and non-crosslinked. In some cases, the synthetic cationic polymer may be a copolymer comprising one or more cationic monomer units and one or more nonionic or anionic monomer units, as long as the copolymer has a net positive charge. The synthetic cationic polymer may have a cationic charge density of 0.5 meq / g to 12 meg / g and an average molecular weight of 1 kDa to 5 MDa. Some non-limiting examples of synthetic cationic polymers are described in U.S. Patent Application Publication No. 2003 / 0223951.

[0064] Carrier The composition may optionally contain 20-95% aqueous support, such as water and / or a water-miscible solvent. The type and amount of aqueous support should be selected to provide a composition having the desired rheological properties. The liquid support may be water with, for example, 5%, 3%, 1%, 0.5%, or even less than 0% miscible organic solvent. Some non-limiting examples of organic solvents include lower alkyl alcohols (e.g., ethanol and isopropanol) and polyhydric alcohols (e.g., propylene glycol, hexylene glycol, glycerin, and propanediol).

[0065] Optional components The personal care compositions described herein may contain a variety of optional components to adjust the properties and characteristics of the composition to suit the purpose, as needed. The optional components may be well-known materials commonly found in this type of composition. The optional components should be physically and chemically compatible with the essential components of the personal care composition and should not otherwise impair stability, aesthetics, or performance of the composition. The individual concentrations of the optional components may generally range from about 0.001% to about 10% by weight of the personal care composition.

[0066] Some non-limiting examples of optional components that may be included in the personal care compositions herein include co-surfactants, adhesion enhancers, cationic polymers, conditioning agents (including gel networks, triglyceride oils, hydrocarbon oils, aliphatic esters, and silicones), anti-dandruff agents (e.g., zinc pyrithione, zinc carbonate, piroctone olamine, piroctone, cyclopirox, lilopirox, MEA-hydroxyoctyloxypyridinone, azoxystrobin, sulfur, azole, salicylic acid, and selenium sulfide), antimicrobial agents, suspending agents, viscosity modifiers, dyes, pigments, non-volatile solvents or diluents (water-soluble and water-insoluble), pearlescent agents, foaming agents, lice killers, pH adjusters, fragrances, preservatives, chelating agents, proteins, vitamins, amino acids, skin surfactants, sunscreens, UV absorbers, stabilizers, and combinations thereof.

[0067] Method for preparing personal care compositions The personal care compositions described herein can be prepared, for example, using conventional methods for producing a desired type of composition (e.g., shampoo, conditioner, or body wash), as described in the following examples.

[0068] In some embodiments, the composition may be prepared by (a) combining an aliphatic alcohol, a gel network surfactant, and water at a temperature sufficient to allow the secondary surfactant and water to partition into the aliphatic alcohol and form a premix; (b) cooling the premix to below the chain dissolution temperature of the aliphatic alcohol to form a gel network; and (c) adding the gel network to one or more detergent surfactants and a liquid carrier to form a personal care composition comprising a dispersed gel network phase having a melting transition temperature of at least about 38°C.

[0069] In some embodiments, the gel network phase can be prepared by heating and mixing an aliphatic alcohol, a gel network surfactant, and water to a temperature in the range of about 75°C to about 90°C. This mixture can be cooled to 27–35°C (for example, by passing the mixture through a heat exchanger). As a result of this cooling step, at least about 50 percent of the mixture of aliphatic alcohol and gel network surfactant crystallizes to form a crystalline gel network.

[0070] Another method for preparing the gel network phase involves heating an aliphatic alcohol, a gel network surfactant, and water while sonicating and / or grinding these components to reduce the particle size of the dispersed gel network phase. This increases the surface area of ​​the gel network phase, and the gel network surfactant and water swell the gel network phase. Another variation for preparing the gel network involves first heating and mixing an aliphatic alcohol and a gel network surfactant, and then adding this mixture to water.

[0071] In some embodiments, the composition may be formulated to have a low viscosity (e.g., less than 3000 mPa-s, less than 2500 mPa-s, less than 2000 mPa-s, or even less than 1000 mPa-s) and placed in a suitable container together with a foaming agent. The container may include a pump, valve, or other suitable dispensing device that allows the user to dispense the composition as a foam or gel. The foaming agent may be present in the composition at a concentration of 1% to 10% by weight (e.g., 2% to 9% by weight or 3% to 8% by weight). In some embodiments, the foaming agent may be a propellant. Some non-limiting examples of blowing agents that may be suitable for use herein include chlorofluorocarbons (CFCs) such as dichlorodifluoromethane, 1,1-dichloro-1,1,2,2-tetrafluoroethane, 1-chloro-1,1-difluoro-2,2-trifluoroethane, 1-chloro-1,1-difluoroethylene, monochlorodifluoromethane, and mixtures thereof; hydrofluorocarbons (HFCs), such as 1,1-difluoroethane, 1,3,3,3-tetrafluoropropene, 2,3,3,3-tetrafluoropropene, and mixtures thereof; hydrofluoroolefins (HFOs), such as 2,3,3,3-tetrafluoropropene (HFO-1234yf), 1,3,3,3-tetrafluoropropene (HFO-1234ze), and mixtures thereof. In addition, the aforementioned foaming agents / propellants can be mixed with one or more hydrocarbons, chlorofluorocarbons, hydrofluorocarbons, hydrofluoroolefins, alkyl ethers, and compressed gases.

[0072] How to use The personal care compositions described herein can be used in conventional ways to cleanse and condition hair or skin. The effective amount of composition for use is generally in the range of 1 g to 50 g (e.g., 1 g to about 20 g). Generally, the method of treating hair or skin may include applying the personal care composition to the hair or skin. For example, an effective amount of the personal care composition may be applied to water-soaked hair or skin, and then the composition may be rinsed off. Application to hair usually involves moving the composition through the hair so that most or all of the hair is in contact with the composition. The personal care compositions can be used as a liquid, solid, semi-solid, flake, gel, or foam in a pressurized container with added propellants, or in the form of a pump spray. The viscosity of the product can be selected to correspond to the desired form.

[0073] In some embodiments, a method for treating hair or skin may include (a) wetting the hair or skin with water; (b) applying an effective amount of the personal care composition to the hair or skin; and (c) rinsing the applied area of ​​skin or hair with water. These steps may be repeated any number of times as desired to achieve the desired cleansing and conditioning effect.

[0074] method Blender foam height Consumers generally associate lathering with the quality of personal cleansing compositions such as shampoos. This method provides a way to quantify specific lathering properties by simulating the lather produced by surfactants when used on hair under typical shampooing conditions. Oil (e.g., sebum) is one of the most common contaminants found on hair that can undesirably affect the lathering properties of shampoo. Therefore, this method evaluates the effect of oil on lathering properties.

[0075] Add 100 mL of tap water with a water hardness of approximately 6-8 gpg (at 100°F) to a suitable blender (e.g., a KitchenAid KSB560CU1 brand food mixer or equivalent), followed by 2 mL of the test composition and 1 mL of extra virgin olive oil. Blend the mixture for 30 seconds on the "stir" setting, measure the foam height in centimeters, and record it as the foam height.

[0076] In some cases, it may be desirable to calculate the expected foam height from a mixture of glycolipid surfactants based on the weight-average foam height of the individual surfactants. At a certain co-surfactant concentration, the weight-average foam height of a composition containing a mixture of high-HLB glycolipid surfactants and low-HLB glycolipid surfactants can be calculated using the following formula: Weighted average foam height = (w_a x a + w_b x b) / (w_a + w_b) During the ceremony, w_a = weight % of high HLB surfactant in glycolipid surfactant mixture. X_a = foam height of a composition with only high HLB, w_b = weight % of low HLB surfactant in glycolipid surfactant mixture, and X_a = foam height of a composition consisting only of low-HLB surfactants.

[0077] Wet Hair ILS Protocol This method can be used to determine the cleansing and / or conditioning properties of the personal care compositions herein. In this method, a 20 g hairpiece (hair switch) of Caucasian low-lift hair strands (e.g., International Hair Importers and Products, Inc., Glendale, NY) is wet with water, treated with the personal care composition, and subjected to testing in an in-lab screening (ILS) sink. The ILS sink has a salon spray head / hose that is held in place but can be directed to flow water onto hair strands hanging from a rod positioned above the sink. The strands can be added to and removed from the water as needed. The water is maintained at a temperature of 38°C and a flow rate of 5.7 liters / minute. The test is as follows: Calibrate the ILS sink to 38°C. • Place the hair bundle / hairpiece on the rod in the sink. • Wet the hair completely for 30 seconds. Using your index and middle fingers ("scissors fingers"), wipe the hairpiece from top to bottom once to remove excess water. Apply a 0.1g / g (product / hair) test composition to the front surface of the hairpiece from top to bottom. - Squeeze the hairpiece for 15 seconds by stroking the bundle from top to bottom while creating foam with your hands alternately. Flip the hairpiece over so the bottom is facing up and squeeze for another 15 seconds. • Evaluate the creaminess of the foam (appearance and feel, after 30 seconds of whipping). Scale: 0 = not creamy ~ 10 = very creamy • Evaluate how easily the foam can be combed through (foam still present in the hairpiece). Using the lowest possible pressure, comb through the hair from beginning to end (starting from the top), and then comb through the entire hairpiece using the least amount of force (combing from top to bottom). Scale: 0 = difficult to comb through ~ 10 = easy to comb through. Rinse for 30 seconds (while gently squeezing the hairpiece). • Wipe the hairpiece bundle once with the fingers of the scissors. • Evaluate the slipperiness. Wipe once and evaluate the feel. Scale: 0 = not slippery ~ 10 = very slippery. • Evaluate the cleanliness after rinsing. Gently stroke the hair from top to bottom with moderate pressure between your thumb and two fingers. Judge how clean or dirty the hair feels. Scale: 0 = Low (dirty) ~ 10 = High (clean). • Evaluate combability after rinsing. Using the lowest possible pressure, comb from the beginning to the end of the hair (from front to back) with the widest teeth side, and then comb through the entire hairpiece (from top to bottom) with the least amount of force. Scale: 0 = stiff ~ 10 = easy.

[0078] Viscosity method The viscosity of the compositions described herein is measured using a Brookfield® RS brand cone and plate rheometer with a cone C75-1, measuring a 2.5 mL sample at 2s⁻¹, 27°C for 3 minutes. [Examples]

[0079] Example 1: Comparative composition and composition of the present invention. Tables 1A and 1B show examples of the compositions of the present invention along with a comparative composition (C1). The comparative composition is prepared using a conventional method for preparing shampoo compositions. The compositions of the present invention are prepared according to the process described below.

[0080] For Examples 1-6, add DI water to the mixing vessel and heat to 75°C ± 3°C while stirring. Add sodium cocoyl isethionate (SCI) to the mixing vessel and mix until the SCI is completely dissolved (i.e., no visible particles remain and the batch becomes clear). After the SCI is completely dissolved, add the following materials to the mixing vessel: sodium benzoate, tetrasodium EDTA, sodium salicylate, alkylamidopropyl betaine, and glycolipid. Mix the contents of the vessel for at least 10 minutes, then cool to below 35°C. Prepare a polyquaternium-10 slurry with water, then immediately add it to the mixing vessel and mix for 10 minutes. Optionally, a fragrance may be added to the mixture and mixed for at least 2 minutes. Titrate the mixture with citric acid until the pH reaches 5.5-5.8. Add DI water to bring the final volume to 100%. Mix the mixture for at least 10 minutes until homogeneity is achieved.

[0081] For Examples 7-8, add DI water to the mixing vessel. While stirring, add the following ingredients to the mixing vessel: KATHON brand methylchloroisothiazolinone and methylisothiazolinone, and glycolipid surfactant. Mix the contents of the vessel for at least 10 minutes. Titrate the mixture with citric acid until the pH reaches 5.5-5.8. Add DI water to bring the final volume to 100%. Mix the mixture for at least 10 minutes until homogeneity is achieved.

[0082] For Examples 9-12, add DI water to the mixing vessel and heat to 75°C ± 3°C while stirring. Add sodium cocoyl isethionate (SCI) to the mixing vessel and continue mixing until the SCI is completely dissolved (no visible particles remain and the batch becomes clear). After the SCI is completely dissolved, add the following materials to the mixing vessel: sodium benzoate, tetrasodium EDTA, sodium salicylate, alkylamidopropyl betaine, and glycolipid surfactant. Mix the contents of the vessel for at least 10 minutes. Then, cool the batch to below 35°C. Prepare a polyquaternium-10 slurry with water and immediately add it to the mixing vessel and mix for 10 minutes. Optionally, add a fragrance and mix for at least 2 minutes. Titrate the mixture with sodium hydroxide until the pH reaches 7.0-7.3. Add DI water to bring the final volume to 100%. Mix the mixture for at least 10 minutes until homogeneity is achieved.

[0083] For Examples 13-14, add DI water to the mixing vessel while stirring. Then, add the following materials: KATHON brand methylchloroisothiazolinone and methylisothiazolinone, and glycolipid surfactant to the mixing vessel. Mix the contents of the vessel for at least 10 minutes. Titrate the mixture with sodium hydroxide until the pH reaches 7.0-7.3. Add DI water to bring the final volume to 100%. Mix the mixture for at least 10 minutes until homogeneity is achieved.

[0084] [Table 1]

[0085] [Table 2] 1 Solvay MACKAM DAB ULS 2 Stepan AMPHOSOL HCA-HP 3 Clariant HOSTAPON SCI 85 C 4 Sophorolipid surfactant (HLB=15-20) from Locus's FERMA SH brand. 5 Sophorolipid surfactant (HLB=2~7) from Locus's FERMA SL brand. 6 Rhamnolipid surfactant (HLB 4-13) from Evonik's RHEANCE ONE brand. 7 UCARE Polymer JR-30M (CD=1.25meq / g) manufactured by Dow. 8 Methylchloroisothiazolinone and methylisothiazolinone manufactured by Dupont.

[0086] Example 2: Hair Conditioning This example demonstrates the hair conditioning effect provided by the compositions from Table 1A. Combinations of non-sulfate anionic surfactants such as SCI are generally considered to provide poor conditioning effects because SCI does not form a suitable coacervate during use. The addition of nonionic glycolipid surfactants is not expected to alter the conditioning properties of the compositions.

[0087] The conditioning characteristics shown in Table 2 below were measured according to the test method described above.

[0088] [Table 3]

[0089] Surprisingly, as can be seen from Table 2, the test compositions containing sophorolipid surfactants exhibited improved conditioning properties compared to the control. Even more surprisingly, when high-HLB sophorolipid surfactants and low-HLB surfactants were present in a 1:1 weight ratio (INV3), the composition appeared to synergistically improve its conditioning properties compared to the control.

[0090] Example 3: Hair cleansing and conditioning This embodiment demonstrates the hair cleansing and conditioning effects provided by the compositions of the present invention shown in Table 1B. The conditioning properties shown in Table 3 below were measured according to the test method described above.

[0091] [Table 4]

[0092] As can be seen from Table 3, the compositions of the present invention exhibit improved foaming and conditioning properties compared to the control. This is surprising, as the addition of relatively low concentrations of glycolipid surfactants is generally expected not to have a significant effect on these properties. Even more surprising is the much improved cleaning and conditioning properties (foaming and combability) exhibited by compositions containing 50% or more of low-HLB sophorolipid surfactants (i.e., INV11 and INV12).

[0093] The data in Table 3 suggests that pH can play a significant role in the viscosity of a composition, as well as in its cleaning, foaming, and / or conditioning properties. As can be seen from Table 3, all compositions of the present invention have a viscosity of less than 800 mPa-s. Therefore, it may be possible to use pH to control the viscosity of a composition, thereby providing greater formulation and usage flexibility for compositions that do not contain thickeners.

[0094] Examples of combinations 1. Personal care composition, A first sophorolipid surfactant having a hydrophilic / lipophilic balance (HLB) of approximately 2 to approximately 7, A second sophorolipid surfactant having approximately 15 to 20 HLBs, Anionic surfactants, amphoteric surfactants, A personal care composition comprising a carrier, wherein the composition substantially contains no thickeners and sulfate surfactants. 2. The personal care composition described in item 1, further comprising a rhamnolipid surfactant. 3. The personal care composition according to item 2, wherein the rhamnolipid surfactant has an HLB of approximately 4 to approximately 13. 4. The personal care composition according to any one of items 1 to 3, wherein the first and second sophorolipid surfactants are present in a weight ratio of 1:3 to 3:1, preferably 1:1 for the first sophorolipid surfactant to the second sophorolipid surfactant. 5. A personal care composition according to any one of items 1 to 4, wherein the anionic surfactant includes an isethionate surfactant, and preferably does not include a sarcosinate surfactant. 6. A personal care composition according to any one of items 1 to 5, wherein the amphoteric surfactant comprises lauramidopropyl betaine, cocamidopropyl betaine, or a combination thereof. 7. A personal care composition according to any one of items 1 to 6, wherein the composition has a pH of approximately 5.5 to approximately 7.2. 8. The personal care composition according to item 7, wherein the composition has a pH of approximately 5.5 to approximately 5.8. 9. The personal care composition according to item 7, wherein the composition has a pH of approximately 6.8 to approximately 7.2. 10. A personal care composition according to any one of items 1 to 9, further comprising a dispersed gel network, preferably an aliphatic alcohol, a gel network surfactant, and a liquid carrier, wherein the aliphatic alcohol is in the form of liquid crystal droplets. 11. The personal care composition according to item 10, wherein the dispersed gel network comprises about 0.05% by weight or more of an aliphatic alcohol and about 0.01% by weight or more of a gel network surfactant selected from anionic surfactants, cationic surfactants, zwitterionic surfactants, nonionic surfactants, and mixtures thereof. 12. A personal care composition according to any one of items 1 to 11, further comprising a cationic polymer. 13. A personal care composition according to any one of items 1 to 12, wherein the composition exhibits a synergistic conditioning effect by the wet hair ILS method. 14. A personal care composition according to any one of items 1 to 13, wherein the composition has a viscosity of less than about 4 Pa-s by viscosity method. 15. A method for cleaning the surface of a target object, Wetting the surface of the target object with water, Apply approximately 1 to 50g of the personal care composition described in one of items 1 to 14 to a wet body surface, To foam the composition, A method comprising rinsing the composition off the surface of a target object with water.

[0095] The dimensions and values ​​disclosed herein should not be understood as being strictly limited to the exact numerical values ​​listed. Instead, unless otherwise specified, each such dimension is intended to mean both the listed value and the functionally equivalent range encompassing that value. For example, a dimension disclosed as "40 mm" is intended to mean "approximately 40 mm."

Claims

1. Personal care composition, A first sophorolipid surfactant having a hydrophilic / lipophilic balance (HLB) of 2 to 7, A second sophorolipid surfactant having an HLB of 15 to 20, Isesionate surfactant and amphoteric surfactants, A carrier and a composition which is substantially free of a thickener. The first and second sophorolipid surfactants are present in a weight ratio of 1:1 to 3:1 for the first sophorolipid surfactant and 3:1 for the second sophorolipid surfactant. Personal care composition.

2. The personal care composition according to claim 1, further comprising a rhamnolipid surfactant.

3. The personal care composition according to claim 2, wherein the rhamnolipid surfactant has an HLB of 4 to 13.

4. The personal care composition according to claim 1, wherein the first and second sophorolipid surfactants are present in a weight ratio of 1:1 between the first sophorolipid surfactant and the second sophorolipid surfactant.

5. The personal care composition according to claim 1, wherein the amphoteric surfactant comprises lauramidopropyl betaine, cocamidopropyl betaine, or a combination thereof.

6. The personal care composition according to claim 1, wherein the composition has a pH of 5.5 to 7.

2.

7. The personal care composition according to claim 6, wherein the composition has a pH of 5.5 to 5.

8.

8. The personal care composition according to claim 6, wherein the composition has a pH of 6.8 to 7.

2.

9. The personal care composition according to claim 1, further comprising a dispersed gel network.

10. The personal care composition according to claim 9, wherein the dispersed gel network comprises 0.05% by weight or more of an aliphatic alcohol and 0.01% by weight or more of a gel network surfactant selected from anionic surfactants, cationic surfactants, zwitterionic surfactants, nonionic surfactants, and mixtures thereof.

11. The personal care composition according to claim 1, further comprising a cationic polymer.

12. The personal care composition according to claim 1, wherein the composition has a viscosity of less than 4 Pa·s by the viscosity method.

13. A method for cleaning the surface of a target object, The surface of the target object is wetted with water, Applying 1 to 50 g of the personal care composition according to claim 1 to the wet body surface, The composition is to be foamed, A method comprising rinsing the composition off the surface of the target object with water.

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