Cleaning composition

Abstract

A cleansing composition and method of using the cleansing composition are disclosed, the cleansing composition comprising a blend of three different emollients, the emollients including a first stearate, a second stearate, and a branched hydrocarbon, wherein the first stearate and the second stearate are different from one another.

Description

[0001] Background of the Invention Technical Field

[0002] This invention relates to improved cleansing compositions for cleansing the skin surface. Specifically, the invention can be used to cleanse facial areas of the skin, and is particularly useful for cleaning various cosmetic products. Background Technology

[0003] Consumers have long sought personal care products that cleanse the skin or deliver and / or deposit beneficial agents that alleviate these problems, given the wide range of skin, hair, and nail / toenail issues they face. Facial cleansers should, as expected, provide adequate cleansing efficiency to remove foundation, mascara, and eyeliner. However, it is important to avoid sacrificing the product's ability to thoroughly cleanse the skin in order to minimize irritation to the user. Many delivery systems sacrifice aesthetics and cleansing power in pursuit of stability and reduced irritation. This is especially true when such products are used on sensitive areas such as the face, and even more specifically, on the highly sensitive area around the eyes. Providing a product that is pleasant to the user is also beneficial, achieved through features such as a more moisturizing feel, less oiliness, and lower residue levels. Other desirable characteristics include a greater sense of cleanliness and a greater feeling of softness (a supple feel) after use.

[0004] Therefore, it is desirable to produce a composition that can thoroughly cleanse the user's skin, wherein the composition has low irritation to the eyes and skin, and provides a pleasant after-use experience. Summary of the Invention

[0005] This invention includes various cleaning compositions, as well as methods of using and preparing the cleaning compositions. In one aspect, there is a cleaning composition comprising a fluid composition embedded in a substrate, wherein the fluid composition comprises: a cleaning blend comprising a first stearate, a second stearate, and a branched hydrocarbon, wherein the first and second stearates are distinct from each other. The composition optionally comprises a blend of nonionic sucrose or glucose fatty acid esters. The composition optionally also comprises a carbomer interpolymer thickener. In this aspect, the substrate comprises a wiping material or fabric, such as a nonwoven wiping material.

[0006] In another aspect, the present invention includes a cleaning composition comprising a fluid composition embedded in a substrate, wherein the fluid composition comprises: a cleaning blend comprising a first stearate present in an amount of about 1.0% to about 3.0% by weight of the fluid composition, a second stearate present in an amount of about 1.0% to about 3.0% by weight of the fluid composition, and a branched hydrocarbon present in an amount of about 0.5% to about 1.5% by weight of the fluid composition, wherein the first stearate and the second stearate are distinct from each other. The composition optionally comprises a blend of nonionic sucrose or glucose fatty acid esters. The composition optionally also comprises a carbomer interpolymer thickener. In this respect, the substrate comprises a wipe or fabric, such as a nonwoven wipe.

[0007] In other aspects, the present invention includes a method for removing a cosmetic product from a user's skin, the method comprising the steps of: firstly contacting the surface of the skin with a cleansing composition comprising a fluid composition embedded in a substrate, wherein the fluid composition comprises: a cleansing blend comprising a first stearate, a second stearate, and a branched hydrocarbon, wherein the first and second stearates are distinct from each other. The composition optionally comprises a blend of nonionic sucrose or glucose fatty acid esters. The composition optionally also comprises a carbomer interpolymer thickener. The method then comprises the step of rubbing the surface of the skin with the substrate to remove at least a portion of the cosmetic product from the surface of the skin. In this respect, the substrate comprises a wiping material or fabric, such as a nonwoven wiping material. The cosmetic product includes, for example, mascara, foundation, eyeliner, lipstick, etc. Detailed Implementation

[0008] This invention provides compositions and materials that deliver optimal properties. As used herein, the term "optimal" includes cleansing efficacy comparable to or improved upon known cleansers. Optimal does not necessarily mean 100% cleansing efficiency, but rather suitable efficiency for removing various cosmetics from the face. Effective cleansing against various cosmetics is described in more detail below. Other beneficial effects provided by the cleansing compositions of this invention may include one or more of the following: aesthetics, reduced oiliness, low irritation to the skin and eyes, shorter drying time with less effort and lower cost, reduced amount of cleanser in the composition, and silicone-free cleansing compositions. In some aspects, the cleansing compositions of this invention are free of polyisobutylene succinic anhydride-derived emulsifiers or polyisobutylene-derived emulsifiers.

[0009] As used herein, the term "percentage" shall mean by weight percentage, and similarly, unless otherwise specified, all quantities shown herein shall be by weight. Also as used herein, the term "water-dispersible component" shall mean a material that, when combined with at least one weight equivalent of water, produces a homogeneous, clear, or turbid mixture. The term "beneficial agent" as used herein includes any active ingredient intended for delivery to the skin, hair, or fingernails / toenails and / or a desired location thereon, including but not limited to agents such as cosmetic agents or pharmaceutical agents. "Cosmetic agent" means any ingredient suitable for cosmetic treatment, providing nutrients, and / or conditioning hair, fingernails / toenails, and / or skin via topical application. "Pharmaceutical agent" means any medicine suitable for topical application. As used herein, "medicinal agent" includes those agents capable of promoting recovery from injury and disease.

[0010] Generally, the present invention includes a cleaning composition comprising one or more of the following: water, one or more thickeners, one or more humectants, one or more emollients, one or more preservatives, one or more fragrances, one or more excipients, one or more extracts, and one or more buffers. Various combinations of the above components can be used in the present invention. The composition can be used in liquid or gel form, can be applied by hand, or can be combined with a wiping material, sheet, or sponge for application via an applicator device.

[0011] The cleaning compositions used in this invention can be formulated as combinations comprising at least two emollients. As used herein, "emollient" means a material used for cleaning skin, hair, and eyelashes, preventing or relieving dryness, or for protecting the skin. Examples of emollients include, but are not limited to, hydrophobic compounds such as plant oils, mineral oils (e.g., petrolatum), fatty esters (e.g., isopropyl palmitate, C12-C15 alkyl benzoates), and those fatty esters including glycerin.

[0012] The cleaning compositions used herein comprise at least one oil phase and at least one aqueous phase, and may also comprise multiple oil phases in addition to a separate aqueous phase. Each oil phase contains the components described herein. When assembled into a cleaning composition, the first oil phase, optional second oil phase, and aqueous phase provide a safe, effective, and pleasant cleaning agent. It should be understood that the first oil phase, second oil phase, and aqueous phase do not need to be formed separately when forming the cleaning composition, but rather the components in each of these phases can be added to each other in any desired manner. The naming of the first oil phase, second oil phase, and aqueous phase is intended to aid in the interpretation and understanding of the component cleaning composition and is not intended to specify any particular method or required steps for forming the cleaning compositions described herein. In other words, the first oil phase and the second oil phase may be contained within a single oil phase.

[0013] This invention includes a fluid cleaning composition. The cleaning composition comprises a first oil phase and an aqueous phase, and optionally includes a second oil phase. As described above, the first and second oil phases can form a single oil phase and do not need to be formed separately. Furthermore, all three phases do not need to be formed separately and can be formed in a single batch or at any time by the addition of any component. The designation of "phase" is intended only to aid in describing the overall composition and is not necessarily intended to describe the formation of distinct and separately formed phases.

[0014] The first oil phase contains at least three emollients, wherein the first, second, and third emollients are each distinct from one another. The first and second emollients may be present in equal or substantially equal amounts. In some respects, the first emollient may be present in greater amounts than the second emollient.

[0015] The first emollient can be an alkyl ester according to Formula I:

[0016] R1-R2(I)

[0017] In structure (I), R1 is C3 to C 22 R1 can be straight-chain, branched, cyclic, saturated, or unsaturated. R1 can have one, two, three, or four branch points. A branch point can have three bonds bonded to other carbons and one bond bonded to hydrogen, or four bonds bonded to other carbons. The side chain attached to the branch point can be methyl, ethyl, propyl, or butyl. The branch point can be located at the end of R1 (opposite to the ester group) or close to the ester group. Non-limiting examples include ethyl-hexyl, isopropyl, isopentyl, neopentyl, isohexyl, isodecyl, isododecyl, etc. Examples of straight-chain R1 include propyl, hexyl, nonyl, decyl, and hexadecyl. R1 can contain one or two groups with heteroatoms (such as oxygen, nitrogen, or sulfur), such as hydroxyl (-OH) and alkyl ethers (-O-methyl, -O-ethyl, and -O-R1). R1 ​​can contain one, two, or three double or triple bonds, or both. R1 can be synthetic, for example derived from petroleum, or derived from renewable resources such as plant and animal materials (such as triglyceride oil), or derived from fermentation processes, or derived from a mixture of resources.

[0018] R2 is a carboxylic acid having the general formula -O-CO-R3. R3 can have about 12 to about 22 carbons and can be straight-chain, branched, cyclic, saturated, or unsaturated. R3 can have one, two, three, or four branch points. A branch point can have three bonds to other carbons and one bond to hydrogen, or four bonds to other carbons. The side chain attached to the branch point can be methyl, ethyl, propyl, or butyl. The branch point can be located at the end of R3 (opposite to the ester group) or close to the ester group. Examples of R2 with branched R3 include isododecanoate, isopentadecanoate, neopentadecanoate, isohexadecanoate, isobehenate, etc. Examples of straight-chain R2 include, for example, laurate, myristate, stearate, and behenate. R3 can contain one or two groups with heteroatoms (such as oxygen, nitrogen, or sulfur), examples of which include hydroxyl (-OH) and alkyl ethers (-O-methyl, -O-ethyl, and -O-R1). Examples of R2s containing a hydroxyl group in R3 are α-hydroxystearate, α-hydroxypalmitate, and ricinoleate. R2 may contain one, two, or three double or triple bonds, or both. R2 may be synthetic, for example derived from petroleum, or may be derived from renewable resources such as plant and animal materials (e.g., triglyceride oil), or may be derived from fermentation processes, or may be derived from mixtures of resources.

[0019] The first oil phase may also contain a second emulsifier, and the second emulsifier may be an ester according to formula (I) above, wherein the second ester is different from the first ester. If R2 differs from R2 of the first ester by zero, one, or two carbons, then R1 of the second ester differs from R1 of the first ester by at least five carbons. If R1 differs from R1 of the first ester by zero, one, or two carbons, then R2 of the second ester differs from R2 of the first ester by at least five carbons.

[0020] The primary emollient can be a stearate, such as isostearate, and may include, for example, isopropyl isostearate, decyl isostearate, and hexyl isostearate. Isopropyl isostearate may be marketed under the trade name Crodamol IPIS. TM Commercially available. In some aspects, if decyl isostearate is used, it can be a simple ester produced using commercially available isostearic acid or any of its derivatives that can be used to form esters. However, in other aspects, decyl isostearate can be or includes an isostearate formed by esterification of isostearic acid or any of its derivatives that can be used to form esters, having undergone a refining process to increase the proportion of monobranched molecules present in the acid compared to an unrefined (e.g., simple) acid. As used herein, the term "decyl isostearate" should refer to a simple isostearate not formed from a highly monobranched acid, while the term "highly monobranched decyl isostearate" refers to an ester formed from isostearic acid having an increased proportion of monobranched molecules compared to simple isostearic acid.

[0021] Therefore, in some embodiments, decyl isostearate can be a highly monobranched decyl isostearate formed from isostearic acid having an increased proportion of monobranched molecules compared to simple isostearic acid. "Highly monobranched decyl isostearate" includes decyl isostearate wherein at least about 60% by weight of the decyl isostearate molecules constitute a monoalkyl-branched isostearate group, and less than about 25% by weight of the decyl isostearate molecules constitute a polyalkyl-branched isostearate group. Exemplary highly monobranched decyl isostearate and methods for forming highly monobranched decyl isostearate are found in U.S. Patent 9,656,944, the entire contents of which are incorporated herein by reference.

[0022] The first oil phase further comprises a second emulsifier, wherein the second emulsifier is different from the first emulsifier. The second emulsifier may be an alkyl ester as defined above, and further, the second emulsifier may be a second stearate, wherein the second stearate is different from the first stearate. Suitable stearates include those defined above with respect to the first stearate. By way of example, the first emulsifier may comprise isopropyl isostearate, and the second emulsifier may comprise simple decyl isostearate and / or highly monobranched decyl isostearate. In some aspects, the second emulsifier may be a blend of simple decyl isostearate and highly monobranched decyl isostearate. In embodiments where the first and second emulsifiers are a first stearate and a second stearate, the first stearate and the second stearate may be present in equal or substantially equal amounts. In some aspects, the first stearate may be present in greater amounts than the second stearate.

[0023] The first oil phase may also contain a third emulsifier, which is distinct from both the first and second emulsifiers. The third emulsifier may also be an alkyl ester as defined above, or in some aspects, it may be a straight-chain or branched hydrocarbon emulsifier having 8 to 20 carbon atoms. Suitable straight-chain or branched hydrocarbon emulsifiers include, for example, decane, dodecane, tridecane, tetradecane, squalene, hexadecane, or isoalkanes. In some aspects, the third emulsifier is a branched hydrocarbon emulsifier having 10 to 20 carbon atoms, such as isohexadecane, which is available under the trade name Permethyl 101A from Sumitomo Corporation.

[0024] If the third emollient is a branched hydrocarbon, it may optionally have 1 to 5 branch points. Each branch point may have three bonds to other carbons and one bond to a hydrogen atom, or four bonds to other carbons. The side chain attached to the branch point may be methyl, ethyl, propyl, or butyl.

[0025] The third emollient may contain one or two groups having heteroatoms (such as oxygen, nitrogen, or sulfur), examples of which include hydroxyl (-OH) and alkyl ethers (-O-methyl, -O-ethyl, and -O-propyl). R1 ​​may contain one, two, or three double or triple bonds, or both. The third emollient may be synthetic, for example derived from petroleum, or may be derived from renewable resources such as plant and animal materials (e.g., triglyceride oils), or may be derived from fermentation processes, or may be derived from mixtures of resources.

[0026] In some respects, isohexadecane may have a structure according to formula II:

[0027]

[0028] Desiredly, each of the first and second emollients is present independently in an amount greater than that of the third emollient. By way of example, the first emollient may be present in an amount of about 0.5% to about 8% or about 1% to about 6% by weight of the composition, and preferably about 2% to about 4% by weight of the composition; the second emollient may be present in an amount of about 0.5% to about 8% or about 1% to about 6% by weight of the composition, and preferably about 2% to about 4% by weight of the composition; and the third emollient may be present in an amount of about 0.5% to about 8% or about 1% to about 6% by weight of the composition, and preferably about 2% to about 4% by weight of the composition.

[0029] It is expected that the first emollient, the second emollient, and the third emollient are present in a desired ratio relative to each other. By way of example, if the first emollient is a first stearate, the second emollient is a second stearate, and the third emollient is a branched hydrocarbon having 8 to 20 carbon atoms, they may be present in a weight ratio of about 4:4:2 or about 2:2:1 (first stearate: second stearate: branched hydrocarbon).

[0030] In other respects, the first, second, and third emollients may be present in substantially equal amounts by weight (e.g., a weight ratio of about 1:1:1). However, it is preferable to vary the amounts of the three emollients depending on the desired sensation and desired cleansing. This is especially true when other phases of the composition contain certain components or have specific skin-feeling characteristics. That is, the second oil phase and / or aqueous phase may contain components that provide the desired skin-feeling characteristics to the overall composition, and thus the first oil phase may provide a higher level of cleansing without focusing on the desired skin sensation. Conversely, the second oil phase and / or aqueous phase may contain components that do not provide the desired skin-feeling characteristics to the overall composition, and thus the first oil phase may focus more on the desired skin sensation while still providing adequate cleansing characteristics.

[0031] While the emollients in the first oil phase can be used to provide cleansing, the overall cleansing composition of the present invention is expected to meet several criteria, including providing cleansing while being low in greasiness, highly moisturizing, leaving less residue, less stickiness, and providing a softer / more supple feel for different types of cosmetics, including long-lasting / waterproof cosmetics.

[0032] For example, in some aspects, it is desirable for the third emollient (such as a branched hydrocarbon) to be present in an amount less than that of the first emollient and less than that of the second emollient. In other embodiments, it is desirable for the third emollient (such as a branched hydrocarbon) to be present in an amount greater than that of one or both of the first and second emollients. Thus, depending on the composition of the second oil phase and the aqueous phase, the composition in the first oil phase can be varied to suit the cleansing and skin-feeling characteristics of the overall composition.

[0033] Therefore, in some aspects, the ratio of the three emollients may be from about 1.1:1.1:1 (first stearate: second stearate: branched hydrocarbon) to about 2:2:1 (first stearate: second stearate: branched hydrocarbon). In other aspects, particularly when the amount of the third emollient is greater than that of the first and second emollients, the weight ratio of the three emollients may be from about 1:1:1.1 to about 1:1:3 or from about 1:1:1.3 to 1:1:1.5 (first stearate: second stearate: branched hydrocarbon). The first oil phase is present in the composition in an amount of about 2.5% to about 20% by weight of the total cleaning composition, or about 5% to about 12% by weight of the total cleaning composition, or about 7% to 10% by weight of the total cleaning composition. It is expected that the combined weight percentage of the first, second, and third emollients is about 7% by weight of the total cleaning composition.

[0034] One emollient, namely di-PPG-3 myristole adipate, may not provide the desired effects in this invention. Therefore, it is expected that the cleansing compositions described and used herein are free of di-PPG-3 myristole adipate.

[0035] The composition preferably includes a second oil phase. The second oil phase may include, for example, cleaning components such as wetting agents, nonionic surfactants (including non-foaming nonionic surfactants), glycerides, preservatives, fragrances, etc.

[0036] The second oil phase may contain one or more humectants, including aliphatic diols. Other commercially available humectants capable of providing moisturizing and conditioning properties to the cleaning composition are suitable for use in this invention. If present, the humectant is preferably present in an amount of about 0.1% to about 4%, more preferably about 0.5% to about 2%, and most preferably about 0.5% to about 1% based on the total weight of the composition. Examples of suitable humectants, non-exclusively, include: 1) water-soluble liquid polyols selected from the group consisting of glycerol, propylene glycol, hexanediol, butylene glycol, pentanediol, dipropylene glycol, and mixtures thereof; 2) polyalkylene glycols of formula III.

[0037] HO—(R"O) b —H(III)

[0038] Where R" is an alkylene group having about 2 to about 4 carbon atoms, and b is an integer from about 1 to about 10, such as PEG 4; 3) Polyethylene glycol ethers of methyl glucose of formula IV:

[0039] CH3—C6H 10 O5—(OCH2CH2) c —OH(IV)

[0040] Where c is an integer from approximately 5 to approximately 25;

[0041] 4) Urea; 5) Fructose; 6) Glucose; 7) Honey; 8) Lactic acid; 9) Maltose; 10) Sodium glucuronide; and 11) Mixtures thereof.

[0042] The second oil phase may also contain one or more nonionic surfactants, including substantially nonfoaming nonionic surfactants. Exemplary suitable substantially nonfoaming ionic surfactants include, for example, blends of sucrose fatty acid esters. Blends of sucrose fatty acid esters may contain sucrose in combination with fatty acids such as stearic acid, lauric acid, myristic acid, oleic acid, palmitic acid, and combinations thereof. One such desired blend of sucrose fatty acid esters is sucrose cocoate, which may be marketed under [trade name missing]. Acquired by LSE through a commercial purchase from Evonik Industries.

[0043] The term "substantially non-foaming" means that when used with the compositions of the present invention, the surfactant has a column height of less than about 20 mm, as determined by the Ross-Miles Foam Generation Test. See 18 (I.) Oil & Soap 99-102 (1941) ("Ross-Miles Test"), which is incorporated herein by reference. Cleaning compositions and personal care systems may be rinseable or wipeable with water. Any non-foaming nonionic surfactants used in the cleaning compositions described herein are intended to be rinseable with water or require no rinsing at all. In some embodiments, it may be useful to use a blend of dehydrated sorbitan stearate and sucrose cocoate as the non-foaming nonionic surfactant, which is available from Croda under the trade name "Arlacel 2121". The non-foaming nonionic surfactant may be present in any desired amount, and in some respects, in an amount of about 0.1% to about 2% by weight of the total cleaning composition, or in an amount of about 0.50% to about 0.75% by weight of the total cleaning composition.

[0044] In addition to the emollients described above, the cleansing composition may also contain a polymeric emulsifier. Available polymeric emulsifiers include glycerides or triglycerides, including, for example, caprylic / capric triglyceride or PEG-6 caprylic / capric triglyceride. As used herein, the term "polymeric emulsifier" should mean compounds capable of emulsifying a system, wherein the polymeric emulsifier has a molecular weight of at least about 5000 and is preferably a block copolymer having both hydrophilic and hydrophobic portions. When used in amounts that effectively emulsify a personal care system, polymeric emulsifiers unexpectedly do not cause significant eye irritation; that is, when 80 consumers used a composition containing an emulsifier in the eye area, no more than about 5% of such users experienced discomfort around the eye area. Other suitable polymeric emulsifiers, non-exclusively, include polyethylene glycol-30 dihydroxystearate, available from Croda under the trade name "Cithrol DPHS"; and polydimethylsiloxane copolyol, available under the trade name "Abil". 90” purchased from Goldschmidt Chemical Corporation; substituted acrylates, such as those marketed under trade names Those purchased from The Goodrich Corporation; and mixtures thereof. One or more polymeric emulsifiers may be present in any desired amount, and in some respects, in an amount of about 0.1% to about 2% by weight of the total cleaning composition, or in an amount of about 0.75% by weight of the total cleaning composition.

[0045] The second oil phase may also contain preservatives or preservative blends. Suitable preservatives include components such as ethylhexylglycerin, dehydroacetic acid, benzoic acid, phenoxyethanol, polyaminopropyl biguanide, chlorphenesin, PEG-4 laurate, iodopropynyl carbamate, and mixtures thereof. Preservatives may be present in any desired amount, and in some embodiments, in an amount of about 0.01% to about 2% by weight of the total cleaning composition, or in an amount of about 0.1% to about 1% by weight of the total cleaning composition. In one aspect, the preservative blend comprises chlorphenesin and phenoxyethanol.

[0046] The second oil phase may also contain fragrances or blends of fragrances. Fragrances may include essential oils or flavor compounds, fixatives, extracts and vitamins, and solvents. Fragrances may be present in any desired amount, and in some respects, in an amount of about 0.01% to about 1% by weight of the total cleaning composition, or in an amount of about 0.1% to about 0.2% by weight of the total cleaning composition.

[0047] The second oil phase is present in an amount of about 1% to about 10% by weight of the total cleaning composition, or may be about 2.5% to about 5% by weight of the total cleaning composition.

[0048] The first and second oil phases may be formed together to prepare a single oil phase, or they may be formed as separate components in the cleaning composition. The naming of the first and second oil phases is not intended to require that the two oil phases be formed separately. When processing the overall cleaning composition, it is desirable to process the two oil phases separately, or the two oil phases may be processed as a single phase, wherein the order of addition of the components is variable.

[0049] The composition comprises an aqueous phase. Like the first and second oil phases, the aqueous phase need not be processed as a separate and distinct phase from the first and / or second oil phases. The aqueous phase is present in the largest quantity compared to the first and second oil phases, and may be present in an amount of about 75% to about 95% or about 80% to about 85% of the total clean composition by weight. The aqueous phase comprises water or another suitable carrier. Water may be present in an amount of about 75% to about 90% of the final composition by weight, and more preferably about 80% to about 88% of the final composition by weight.

[0050] The first oil phase, second oil phase, or aqueous phase may also contain one or more thickeners, which may be hydrophilic thickeners. Examples of suitable hydrophilic thickeners, non-exclusively, include those marketed under the trade name " ETD 2020 (INCI: Acrylic ester / C10-C30 alkyl ester crosspolymer of acrylate) Ultrez 10NF polymer (INCI: carbomer) was purchased from BF Goodrich as a carbomer, acrylate copolymer, and acrylate crosslinking polymer, marketed under the trade name " Plus is hydroxyethyl cellulose modified with hexadecyl ether groups purchased from Hercules, marketed under the trade name " QM is a polyvinyl methyl ether / maleic anhydride (PVM / MA) decadiene crosslinked polymer, as well as copolymers and mixtures thereof, purchased from International Specialty Products, wherein carbomer is preferred. Examples of suitable acrylate copolymers, non-exclusively, include those under the trade name "QM". 33” acrylate copolymer purchased from Rohm & Haas, acrylate / aminoacrylate copolymer purchased from National Starch & Chemical Company under the trade name “Structure Plus”; acrylate / stearyl alcohol polyether-20 itaconic acid copolymer purchased from National Starch & Chemical Company under the trade name “Structure 2001”; acrylate / cetyl alcohol polyether-20 itaconic acid copolymer purchased from National Starch & Chemical Company under the trade name “Structure 3001”; acrylate / cetyl alcohol polyether-20 itaconic acid copolymer purchased from National Starch & Chemical Company under the trade name “ 22” acrylate / stearyl alcohol polyether-20 methacrylate copolymer, purchased from Rohm & Haas, as well as copolymers and mixtures thereof. Carbopol ETD 2020, referred to as “carbopol interpolymer thickener,” is preferred in this invention. The thickener may be present in an amount of about 0.05% to about 0.50% by weight of the total cleaning composition or about 0.12% to about 0.18% by weight of the total cleaning composition.

[0051] The aqueous phase may also contain a buffer. Suitable buffers may include, for example, citrate buffers, phosphate buffers, lactate buffers, gluconate buffers, and sodium hydroxide. One or more buffers may be present in any amount required to achieve the desired pH. In some aspects, the buffer may be a blend of 20% sodium hydroxide and water or other solvents. The buffer may be present in an amount of about 0.01% to about 0.5% by weight of the final composition, and more preferably about 0.2% by weight of the total clean composition.

[0052] In some aspects, the invention includes a cleaning composition comprising, or substantially consisting of, a first oil phase, a second oil phase, and an aqueous phase. It is desirable that the aqueous phase be present in the cleaning composition by weight at its maximum. It is also desirable that the first oil phase be present by weight greater than that of the second oil phase. The invention may include a concentrated blend in which all three phases are present, but the amount of water is significantly reduced, wherein the concentrate can be prepared and stored separately, with water added at a later date. Using the concentrate in this manner can be particularly useful for manufacturing and transport purposes, especially when the final composition (with water) is prepared in a location separate from the other components.

[0053] The compositions described herein can be used to remove various beauty products from a user's skin, and specifically can be used to effectively remove mascara, foundation, lipstick, and eyeliner without leaving heavy or oily residue. Mascara is a well-known cosmetic material that is difficult to remove from the skin due to its high deposition level of film-forming agents and relatively high levels of hydrophobic materials. Furthermore, mascara contains high levels of carbon black pigments, giving it a dark color. Additionally, since mascara is typically applied to the eyelids or eyelashes, removal requires gentle, low-pressure, and non-planar application. Eyeliner presents its own inherent difficulty in removal because it contains titanium dioxide, iron oxide, mica, silica, and higher concentrations of pigments / colorants, which can make it more difficult to remove. Furthermore, like mascara, eyeliner is often applied to the eyelids or eye area, and removal requires gentle, low-pressure, and non-planar application. Foundation also presents some difficulties because it is often a lotion and may contain silicone, which causes it to remain on the skin. Today's cosmetics are designed for "24-hour" use, meaning that the cosmetic remains on the user's skin for an extended period of time. These "long-lasting" and waterproof cosmetics have high transfer resistance, making them difficult to remove.

[0054] It is particularly desirable to provide a material that effectively and sufficiently removes adequate amounts of these three cosmetic materials. Furthermore, it is desirable to provide a composition that does not leave oily or greasy residues on the skin's surface, as such oily cleansers are difficult to remove and leave the user with an unclean feeling. Additionally, it is important that the cleansing composition provides low or no irritation to the skin, especially the eyes. It is also desirable to leave the user's skin feeling soft and pleasant during and after use. This invention provides a cleansing composition that has the desired characteristics as defined herein, while also providing suitable cleansing power.

[0055] Another embodiment of the invention relates to a personal care system comprising, consisting of, or substantially consisting of, based on the total weight of the personal care system: a) a first oil phase; b) a second oil phase; and c) an aqueous phase. The personal care system can be used as a liquid or gel composition applied to the skin by the user's hands or other tools. Optionally, the personal care system can be soaked or embedded in a substrate such as a wipe or other application tool, wherein the user can easily remove the wipe or other application tool from the packaging and use the wipe or other application tool to achieve cleaning. In a preferred embodiment, a cleaning composition is soaked in a separate wipe, which the user can use to cleanse the user's skin. The separate wipe can be packaged in a dispenser comprising multiple wipes, or can be packaged in a dispenser comprising only one wipe. The desired substrate includes the wipes described in more detail below.

[0056] Personal care systems and cleaning compositions may optionally contain one or more beneficial agents or pharmaceutically acceptable salts thereof. As used herein, the term "beneficial agent" includes any active ingredient, such as a cosmetic agent or pharmaceutical reagent, that will be delivered to the skin, hair, or fingernails / toenails and / or a desired location thereon. "Cosmetic agent" means any ingredient suitable for cosmetic treatment, providing nutrients, and / or conditioning hair, fingernails / toenails, and / or skin via topical application. "Pharmaceutical reagent" means any medicine that is inherently hydrophobic or hydrophilic and suitable for topical application. As used herein, "medicinal agent" includes those agents capable of promoting recovery from injury and disease. One or more beneficial agents (if used) may be contained in any of the first oil phase, second oil phase, or aqueous phase, if compatible with the other components in the selected phase.

[0057] Beneficial agents available herein can be classified according to their therapeutic benefits or their assumed modes of action. However, it should be understood that in some cases, beneficial agents available herein may provide more than one therapeutic benefit or act via more than one mode of action. Therefore, for convenience, specific classifications are provided herein, but it is not intended to limit beneficial agents to one or more specific applications listed. Furthermore, compounds identified below as suitable as beneficial agents may be used in amounts exceeding or greater than those used for other purposes in cleaning compositions or personal care systems.

[0058] Examples of suitable beneficial agents include, but are not limited to: decolorizing agents; reflective agents; film-forming polymers; humectants; amino acids and their derivatives; antimicrobial agents; allergy inhibitors; anti-acne agents; anti-aging agents; anti-wrinkle agents; antiseptics; analgesics; antitussives; antipruritics; local anesthetics; anti-hair loss agents; hair growth promoters; hair growth inhibitors; antihistamines, such as Mandragora Vernalis and Tanacetum Parthenium; anti-infective agents, such as Acacia Catechu, Aloe Barbadensis, Convallaria Majalis, Echinacea, Eucalyptus, Mentha Piperita, Rosa Canina, and Sassafras. Albidum, etc.; anti-inflammatory agents; antiemetics; anticholinergics; vasoconstrictors; vasodilators; wound healing promoters; peptides, polypeptides, and proteins; deodorants and antiperspirants; pharmaceuticals; skin emollients and skin moisturizers; skin firming agents and vitamins; tanning agents; skin brightening agents; antifungal agents, such as cornflower (Centaurea Cyanus) and mountain laurel (Kalmia). Latifolia and antifungal agents for foot preparations; depilatory agents; shaving preparations; topical analgesics; fragrances; antiirritants; hemorrhoid agents; insecticides; poison ivy products; poison oak products; burn products; antidiarrheal agents; prickly heat agents; vitamins; amino acids and their derivatives; herbal extracts; visual pigments; flavonoids; sensory agents; antioxidants; skin conditioning agents; hair shine agents; chelating agents; cell turnover enhancers; colorants; sunscreens, those active ingredients disclosed in U.S. Patent 6,063,397 (which is incorporated herein by reference); antiedema agents; collagen enhancers; and mixtures thereof.

[0059] Examples of suitable anti-edema agents include, non-exclusively, natural bisabolol, synthetic bisabolol, and mixtures thereof.

[0060] Examples of suitable vasoconstrictors, non-exclusively, include horse chestnut extract, Sichuan pepper, and mixtures thereof.

[0061] Examples of suitable anti-inflammatory agents, non-exclusively, include benzoxanol, centella asiatica, bisabolol, chamomile (whole plant), chamomile (without chamomile lactone), green tea extract, green tea concentrate, hydrogen peroxide, lycopene (including “Lyc-o-Pen” purchased from LycoRed Natural Products Industries, Ltd.), oat oil, chamomile, and mixtures thereof.

[0062] Examples of collagen enhancers include, but are not exclusive to, vitamin A, vitamin C, and mixtures thereof.

[0063] Examples of suitable skin tightening agents include, non-exclusively, dimethylaminoethanol (“DMAE”).

[0064] Examples of suitable antipruritic agents and skin protectants include, non-exclusively, oat flour, beta-glucan, chamomile, soybean and its derivatives, sodium bicarbonate, colloidal oat flour, surfactant-based colloidal oat flour cleansers, chickweed (Anagallis arvensis), evening primrose (Oenthera biennis), verbena (Verbena officinalis), etc. These antipruritic agents may be used in amounts from about 0.01% to about 40% of the total weight of the cleansing composition, and preferably from about 1% to about 5%.

[0065] As used herein, colloidal oat flour refers to a powder obtained from the grinding and further processing of whole oat grains, conforming to U.S. Oat No. 1 or No. 2 standards. Colloidal oat flour has the following particle size distribution: no more than 3% of the total particles have a particle size greater than 150 micrometers, and no more than 20% of the total particles have a particle size greater than 75 micrometers. Examples of suitable colloidal oat flour include, but are not limited to, “Tech-O” from Beacon Corporation and colloidal oat flour from Quaker.

[0066] Examples of suitable reflective agents, non-exclusively, include mica, alumina, calcium silicate, ethylene glycol dioleate, ethylene glycol distearate, silica, sodium magnesium fluorosilicate, and mixtures thereof.

[0067] Suitable film-forming acetyltyrosine amides, zinc pyrithione, coal tar, benzoyl peroxide, selenium sulfide, hydrocortisone, sulfur, menthol, promocaine hydrochloride, tricetylmethylammonium chloride, polyquaternium 10, panthenol, panthenol triacetate, vitamin A and its derivatives, vitamin B and its derivatives, vitamin C and its derivatives, vitamin D and its derivatives, vitamin E and its derivatives, vitamin K and its derivatives, keratin, lysine, arginine, hydrolyzed wheat protein, hydrolyzed silk protein, octyl methoxycinnamate, oxybenzone, minoxidil, titanium dioxide, zinc dioxide, retinol, erythromycin, retinoic acid, and mixtures thereof.

[0068] One class of beneficial agents includes those therapeutic components that are effective in treating dandruff, seborrheic dermatitis, and psoriasis, as well as related symptoms. Examples of suitable beneficial agents of this class, non-exclusively, include zinc pyrithione, anthralin, shale oil and its derivatives, such as sulfonated shale oil, selenium sulfide, sulfur; salicylic acid; coal tar; povidone-iodine; imidazoles such as ketoconazole; and dichlorophenyl imidazole dioxolane. imidazolodioxalan (which may be commercially available under the trade name "Elubiol" from Janssen Pharmaceutica, NV), clotrimazole, itraconazole, miconazole, imidazolid, tiaconazole, thioconazole, butoconazole, fluconazole, miconazole nitrate, and any possible stereoisomers and derivatives thereof; pyridone ethanolamine salts (hydroxymethylpyridone); selenium sulfide; ciclopiroxamine; anti-psoriasis agents, such as vitamin D analogs (e.g., calcipotriol, calcitriol, and tacaleitrol); vitamin A analogs, such as vitamin A esters (e.g., vitamin A palmitate, retinoids, retinol, and retinoic acid); corticosteroids, such as hydrocortisone, flubendione, butyrate, clobetasol propionate, and mixtures thereof.

[0069] The amount of beneficial agent to be combined with the cleaning composition or emulsion may vary depending on factors such as the ability of the beneficial agent to penetrate the skin, hair, or nails, the specific beneficial agent selected, the desired specific beneficial effect, the user's sensitivity to the beneficial agent, the user's health status, age, and the condition of their skin, hair, and / or nails. In summary, the beneficial agent is used in a "safe and effective amount" that is high enough to deliver the desired skin, hair, or nail benefit or to alter a condition to be treated, but low enough to avoid serious side effects, and has a reasonable risk-benefit ratio within reasonable medical judgment. If a beneficial agent is included, it may be present in the cleaning composition or personal care system in an amount from about 0.01% to about 5.0%, preferably from about 0.01% to about 2.0%, and more preferably from about 0.01% to about 1.0%, based on the total weight of the composition / system.

[0070] Optionally, commercially available detergent thickeners capable of imparting a suitable viscosity to condition the composition are suitable for this invention. If used, the amount of detergent thickener present in the composition should be sufficient to increase the Brookfield viscosity of the composition to a value of about 500 centipoise to about 10,000 centipoise. Examples of suitable detergent thickeners, non-exclusively, include: monoesters or diesters of polyethylene glycol of formula V, HO—(CH2CH2O). z H(V)

[0071] Where z is an integer from approximately 3 to approximately 200;

[0072] Fatty acids containing about 16 to about 22 carbon atoms; fatty acid esters of ethoxylated polyols; ethoxylated derivatives of monoesters and diesters of fatty acids and glycerols; hydroxyalkyl cellulose; alkyl cellulose; hydroxyalkylalkyl cellulose; and mixtures thereof. More specifically, suitable detergent thickeners include, non-exclusively, behenylbenzyl dimethyl ammonium chloride; cetyl alcohol, quaternary ammonium salt-46, hydroxyethyl cellulose, cocodimonium chloride, polyquaternary ammonium salt-6, polyquaternary ammonium salt-7, quaternary ammonium salt-18, PEG-18 glyceryl oleate / cocoate, acrylate / stearyl ether-50 acrylate copolymer, a mixture of lauryl ether-3 and propylene glycol (which is available from Goldschmidt under the trade name "Antil 208"), a mixture of cocamidopropyl betaine and glyceryl laurate (which is available from Goldschmidt under the trade name "Antil HS60"), propylene glycol, a mixture of PEG 55 and propylene glycol oleate (which is available from Goldschmidt under the trade name "Antil414liquid"), and mixtures thereof. Preferred detergent thickeners include polyethylene glycol esters, and more preferably PEG-150 distearate, which is available under the trade name “PEG 6000DS” from Stepan Company of Northfield, Ill. or Comiel, SpA of Bologna, Italy.

[0073] The cleaning composition described above can be prepared by the following steps: combining the desired components in a suitable container and mixing them under any desired conditions in any conventional mixing apparatus well known in the art, such as a mechanical stirring propeller, paddle, etc. The processing may include the following separate steps: forming a first oil phase, forming a second oil phase, and forming an aqueous phase, and then combining the first oil phase, the second oil phase, and the aqueous phase in any desired order to produce the final cleaning composition. Alternatively, the cleaning composition can be formed by shaping the first oil phase and the second oil phase into a single oil phase, wherein the order of addition of the components is variable, and then combining this single oil phase with the separately formed aqueous phase. Alternatively, the cleaning composition can be formed by combining the components in the first oil phase, the second oil phase, and the aqueous phase together into a single composition, wherein the order of addition of the components is variable.

[0074] The cleaning composition may be provided in a container in liquid, gel or cream form, thereby allowing it to be applied to the skin by a user with their hand or a cloth, wipe, sheet or other device. Alternatively, the composition may be embedded or soaked in a wipe or multiple sheets or wipes, thereby allowing the composition to be applied to the skin by a wipe, wipe or other device.

[0075] Since the composition will be applied to the face and is intended to remove cosmetic materials, it is desirable to soak the composition in a sheet or wipe and provide it to the user in this form. The user then removes the soaked wipe from a suitable airtight package and applies it directly to the skin. Therefore, the system or packaging may include multiple wipes in a resealable package, each wipe having been soaked in or otherwise containing the cleaning composition of the present invention. In other aspects, a single wipe may be contained in its own airtight package or container, which may be discarded after use of the wipe contained therein. The wipes are desirably disposable and contain biodegradable components, thus making them environmentally friendly and harmless. Wiping materials may include, for example, natural, biodegradable, or synthetic fibers or filaments (e.g., wool, silk, jute, hemp, cotton, linen, sisal, or ramie) or synthetic (e.g., rayon, cellulose esters, polyethylene derivatives, polyolefins (such as polyethylene and polypropylene), polyamides (such as nylon 6, nylon 6,6), or polyesters (such as polyethylene terephthalate and polybutylene terephthalate)), or combinations thereof. These nonwoven materials are generally described in INDA's "NONWOVEN FABRICS HANDBOOK" (1999), concerning nonwoven substrates and methods of their manufacture. One particular substrate that may be useful is an embossed hydroentangled nonwoven material made from a mixture of 20% rayon 1.7 dtex, 40% polyester (PET) 1.3 dtex, and 40% polyester (PET) 1.7 dtex. The basis weight of the substrate can vary, but is typically in the range of about 20 g / m² to about 500 g / m², for example, about 50 g / m² to about 150 g / m². The wiping substrate can have any desired size and, in some respects, any desired area, including about 2–10 inches long and about 2–10 inches wide, more preferably about 7–8 inches long and about 7–8 inches wide. Other suitable wiping materials include those described in EP1 283 019B1, U.S. Patent 9,622,944, and U.S. Patent Application 2016 / 0367102, the entire disclosure of each of which is incorporated herein by reference.

[0076] In some aspects, the composition is provided to a user in a liquid dispensing bottle or container, wherein the user applies the composition to a wiping or other applicator device, and the user uses the applicator to cleanse the skin. The composition may be sold individually in a dispensing bottle or in a kit, wherein the package includes a dispensing bottle containing the composition and multiple applicator devices (such as wiping or balls).

[0077] This invention includes not only the cleaning compositions described above, but also methods of using the cleaning compositions described above. The method includes applying an effective amount of the composition to the skin (including facial skin and skin near the eyes) and cleaning the skin with the composition. The composition can be applied to the skin by hand or by using an applicator (such as a sheet, wet wipe, sponge, brush, etc.). The composition can be applied to the skin while the skin is wet or dry, and can be wiped off the skin, rinsed off the skin, or the skin can be dried after application of the composition. It is particularly desirable to apply the composition to the skin via a pre-soaked wipe and allow it to dry without further washing or cleaning by the user. The user can discard the used wipe. The invention described herein can be practiced without any components, ingredients, or steps not specifically disclosed herein, or may include additional components or steps not explicitly disclosed herein.

[0078] As described above, the present invention relates to compositions that can be used to effectively and efficiently remove a variety of cosmetics from the surface of a user's skin. The compositions of the present invention should be able to effectively remove, for example, foundation, lipstick, eyeshadow, lip liner, eyebrow pencil, pen, hair oil, blush, mascara, concealer, highlighter, and / or eyeliner. Furthermore, the compositions of the present invention may be substantially silicone-free, if not completely silicone-free.

[0079] The invention can be better understood through the following examples, which are exemplary in nature and are not intended to limit any particular combination of elements.

[0080] Example

[0081] The cleansing compositions and products described herein not only effectively remove desired cosmetic products from the skin, but also provide the user with a number of beneficial features. Such desired features include, for example, leaving a low-greasy feeling on the skin after application, having reduced or eliminated levels of irritation (such as eye irritation), a soft / elastic feel, leaving a low level of residue, and leaving the skin feeling moisturized.

[0082] The following non-limiting examples demonstrate the effectiveness of the present invention.

[0083] Example 1 – Screening Test of Pure Emollients

[0084] Each emollient was tested individually in vitro according to the instrumental testing protocol for pure emollient screening, and in vivo according to the pure emollient screening phase protocol detailed below. The screening of pure emollients was conducted to determine effectiveness based on efficacy in removing cosmetics (e.g., foundation, eyeliner, and mascara), skin feel, and cost. As used herein, the term "pure" refers to a sample comprising the emollient itself without any other added components. Testing for "pure" emollients may include emollients embedded in or dispersed on / inside a wiping substrate, as described below.

[0085] Example 1A - In vitro screening test for pure emollients

[0086] Each emollient was tested in vitro to determine its ability to remove foundation (Revlon ColorStay). TM The cleansing properties of Foundation 450 Mocha, eyeliner (L'Oréal Paris Infallible Never Fail Eyeliner, Black 511), and mascara (CoverGirl LashBlast Fusion Water Resistant Mascara 885, Very Black) are also mentioned.

[0087] In vitro testing was performed using a Sheen wet abrasion tester (REF 903 / PG) and an X-rite spectrophotometer (Hunter Labscan XE) according to the protocol described below, followed by Tukey-Kramer colorimetric evaluation (measurement of ΔE).

[0088] 1. Prepare four silicone strips for each emollient sample.

[0089] 2. Apply each cosmetic formulation to a 4cm × 2cm rectangular area on its individual silicone strip (one cosmetic formulation / silicone strip) and allow to dry overnight.

[0090] 3. Place a 400g weight on the Sheen wet abrasion tester and wipe the attached material.

[0091] 4. Use a spectrophotometer to read the silicone strip readings after drying overnight to set the baseline color level.

[0092] 5. Apply 500 μL of moisturizer to the cosmetic applied to the silicone strip and spread it over the entire area (back and forth) for 15 seconds using a finger cot.

[0093] 6. Apply 500 μL of emulsifier to the wiping material (an embossed spunlace nonwoven material made of a mixture of 20% rayon 1.7 dtex, 40% polyester (PET) 1.3 dtex, and 40% polyester (PET) 1.7 dtex; this resulting wiping material is referred to as the "sample substrate")

[0094] 7. Each sample is subjected to a rubbing test by rubbing a sample substrate embedded with a moisturizing agent on the sample a predetermined number of times:

[0095] a. Foundation: 5 coats

[0096] b. Eyeliner: 3 times

[0097] c. Mascara: 30 coats

[0098] 8. After the scrubbing test, use a spectrophotometer to read the value of each silicone strip and determine the resulting color level. The net change in color measured between the first and second spectrophotometer readings is called “ΔE”.

[0099] Example 1B - In vivo screening test of pure emollients

[0100] It also targets the removal of foundation (Revlon ColorStay) TM The efficacy of each emollient was tested in vivo for Foundation 450 Mocha, eyeliner (L'Oréal Paris Infallible Never Fail Eyeliner, Black 511), and mascara (CoverGirl LashBlastFusion Water Resistant Mascara 885, Very Black).

[0101] The general in vivo testing procedure can be described as follows:

[0102] • Use two groups of individuals: P1 and P2

[0103] • Draw three 1” circles spaced 1.5” apart on the palmar side of the forearms of both groups.

[0104] Apply the cosmetic preparation to a circle (0.001g foundation, 0.002g eyeliner, and 0.015g mascara) and allow it to dry for 45 minutes.

[0105] • Take photos of the unwiped circles of dirt.

[0106] Apply approximately 0.015g-0.020g of pure emollient and rub back and forth on the imprinted sample substrate for 15 seconds.

[0107] Wipe once with a cotton pad and take a photo of the wiped circle.

[0108] Wipe a clean area with a cotton pad a second time, and take a second photo of the wiped circle.

[0109] • The special panel members were required to rank the cleaning efficacy of the top 5 samples from 1 to 5, with the 1st ranked product being considered the most effective and the 5th ranked product being considered the least effective. Products ranked below the top five were not rated.

[0110] Following the aforementioned in vitro and in vivo procedures, the cleansing efficacy of several pure emollients was tested; Table 1 below shows the results of these in vitro and in vivo tests. It is noteworthy that the combination of PEG-20 glyceryl triisostearate with isohexadecane was not tested in vivo because, when evaluated as a single emollient, PEG-20 glyceryl triisostearate was determined not to contribute to cosmetic removal. Furthermore, the polymer ester (sold by Croda under the name ModiSurf Lift) was not tested in vitro due to its primary application in home care and living spaces. PPG-3 benzyl ether ethylhexanoate was further tested in a separate consumer study; however, this composition was not further investigated.

[0111] Table 1: Results of Efficacy Screening of Pure Emollients

[0112]

[0113] The tests above showed that isopropyl isostearate, isohexadecane, and decyl isostearate (de-blended decyl isostearate (and) isostearyl alcohol isostearate) consistently performed well in terms of cleansing efficacy and exhibited a pleasant skin feel. Based on these promising test results, these three emollients were selected as the primary alkaline pure emollients for further testing described below.

[0114] Example 2 – Test of Pure Emollient Blends

[0115] Various emollients were blended in equal proportions (1:1:1 by weight of active emollients) and their cleansing efficacy and skin feel were tested. Emollients tested in the various blends included isopropyl isostearate (as Crodamol). TM IPIS for sale), diisostearyl adipate (in Liquiwax) TM DISA for sale), PPG-3 isostearyl methyl ether (in Arlamol) TM LST for sale), PPG-3 benzyl ether ethylhexanoate (in Crodamol) TM SFX for sale), decyl isostearate (and) isostearyl alcohol isostearate (in Crodamol) TM SSA sold), PPG-3 benzyl ether myristate (in Crodamol)TM STS sold), 2-PPG-3 myristole adipate (in Cromollient) TM DP3-A for sale), dioctyl dodecyl dodecanoate (available at Liquiwax) TM DIADD for sale).

[0116] Various emollient blends were tested in vitro and in vivo to determine the removal properties of Revlon ColorStay foundation. TM The efficacy of the blends (Foundation 450 Mocha), eyeliner (L'Oréal Paris Infallible Never Fail Eyeliner, Black 511), and mascara (CoverGirl LashBlast Fushion Water Resistant Mascara 885, Very Black) was assessed. In vivo testing was conducted according to the procedures outlined in Example 1 above. The efficacy results of the blends are shown in Table 2 below.

[0117] Table 2: Results of Efficacy Screening of Pure Emollient Blends

[0118]

[0119]

[0120]

[0121] Based on the in vivo and in vitro tests conducted, Liquiwax TM DISA was discontinued due to its lower cleansing efficacy against foundation and powder, and a perceived oily feel. Liquidax, on the other hand, declined due to its performance issues with foundation. TM DIADD is not continuing. Due to the performance of the mascara, Crodamol... TM STS and Liquiwax TM DIADD not continued. Due to the oily skin feel, Cromollient TM DP3-A is not continued. Due to the performance of the mascara, Arlamol... TM LST will not continue.

[0122] Select Crodamol TM IPIS+Crodamol TM SSA+Crodamol TMThe pure emollient blend of SFX (i.e., isopropyl isostearate + isostearyl isostearate + PPG-3 benzyl ether ethylhexanoate) was used as a lead emollient blend for further formulation testing because it showed net change ΔE values ​​of 14.6 and 16.6 in foundation and mascara, respectively, in in vitro tests; and in two separate in vivo foundation and mascara tests, it was rated #1 by three expert panel members and only one expert panel member rated it as bottom 5.

[0123] Example 3: Compositions comprising blends of different emollients

[0124] To determine the cleansing efficacy of compositions containing emollients, various compositions were prepared. Each composition comprised (i) an aqueous phase, (ii) a first oil phase containing an emollient blend, and (iii) a second oil phase. Each composition was prepared and tested on various cosmetics (foundations, Revlon ColorStay, etc.). TM Removal of Foundation 450 Mocha, eyeliner (L'Oréal Paris Infallible Never Fail Eyeliner, black 511), and mascara (CoverGirl LashBlast Fushion Water Resistant Mascara 885, very black).

[0125] The formulation to be tested was prepared and impregnated into a sample substrate wiping material, as described above. The dosage of the formulation was 3.7 g detergent / g substrate wiping material. The formulations to be tested are shown in Table 3A below.

[0126] Table 3A: Composition of blends of different emollients in the first oil phase

[0127]

[0128] Then, following the procedure described below, two groups of participants evaluated the swabs:

[0129] • Draw three 1” circles spaced 1.5” apart on the palmar side of the forearms of both groups.

[0130] Apply the cosmetic preparation to a circle (0.001g foundation, 0.002g eyeliner, and 0.015g mascara) and allow it to dry for 45 minutes.

[0131] • Prepare each swab impregnated with a sample substrate (Example 1–Example 6) and provide it to the subject.

[0132] • A dedicated team member was required to wipe the area three times with the wiping agent and evaluate the samples individually. Each sample was ranked on a scale of 1-7, with a score of 1 being the best or most desirable wiping agent composition, and a score of 7 being the least desirable wiping agent composition.

[0133] Table 3B: In vivo efficacy tests of the compositions

[0134]

[0135] Based on the data from the aforementioned group, Examples 1, 2, and 4-6 were deemed not to meet optimal cleaning efficacy. Although Example 3 demonstrated sufficient cleaning efficacy and was ranked and rated #1, no further investigation was conducted on this formulation due to overall requirements.

[0136] The inventors also tested Crodamol TM The various components of SSA, and the determination of Crodamol TM Decyl isostearate in SSA demonstrates enhanced effectiveness in cleansing cosmetics. Finally, based on the embodiments described herein, isohexadecane was selected for further testing based on its ability to remove mascara as shown in the "pure" emollient test above.

[0137] Example 4: Compositions with different component ratios

[0138] Based on the results of the above pure and composition tests, the efficacy of additional compositions was tested. Specifically, different ratios of emollients were tested to determine whether cosmetic removal and / or other skin feel standards were affected by the component ratios. Compositions were prepared as described in Table 4A below. The ratios provided in the table refer to the weight ratios of the three emollients listed in the table.

[0139] Table 4A: Emollient Systems for the First Oil Phase

[0140]

[0141] Each composition was prepared and each composition comprised (i) an aqueous phase, (ii) a first oil phase containing a blend of emollients, and (iii) a second oil phase. The first oil phase comprised a combination of three emollients as described in Table 4A above.

[0142] Tables 4B and 4C below show exemplary component levels for the second oil phase and aqueous phase, respectively. The amounts of the second oil phase and aqueous phase may vary depending on the desired composition.

[0143] Table 4B: Exemplary Levels of Second Oil Phase Components

[0144]

[0145]

[0146] Table 4C: Exemplary Aqueous Phase

[0147]

[0148] Examples 7-14, as shown in Table 4A, comprise three phases having the components described in Tables 4A, 4B, and 4C. The tested formulations are shown in Table 4D below.

[0149] Table 4D: Compositions with different component ratios

[0150]

[0151] The compositions shown in Table 4D were prepared and their in vitro cleaning ability was tested. Comparative samples were also tested, which included silicone-containing cleaners (Neutrogena) available commercially available. TM Cleaning compositions in small containers of cosmetic remover. Perform four rounds for each composition. Add different cosmetic samples (0.015g Revlon Colorstay 450 Mocha foundation or 0.015g Hydro Boost Waterproof Mascara Black) to white high-density polypropylene (HDPP) sheets. Apply the cosmetic to an area with a 1-inch diameter circle. Allow the cosmetic to dry for 1 hour.

[0152] The oil and aqueous phases are combined separately, with each phase blended at room temperature. The aqueous phase is blended until homogenized. After homogenization, the aqueous phase is added to the oil phase, and the resulting mixture is combined.

[0153] For each composition including the comparative composition, a sample substrate (as defined above) was used. Each 7.2 inch × 7.4 inch sample substrate swab was wetted by adding 3.7 g of the formulation per gram of fabric. The wetted swab was placed on a 50 g weighted slider attached to the Instron instrument (Instr-Met Corporation, IM 1122_4585). The Instron instrument's test settings were: cycles: 4, 50 / min, endpoint 1: 6.0, endpoint 2: 0.0, hold time: 3 seconds.

[0154] Images were captured using a Nikon D800 with an AF-Micro NIKKOR 60mm 1:28GED lens and a fixed distance of 7.3 inches, equipped with an X-Pol filter. Images were captured (i) before application of cosmetics, (ii) after application of cosmetics, and (iii) after removal of cosmetics. The images were analyzed using Matlab to calculate the changes in LAB values ​​at the baseline, after application of cosmetics, and after removal of cosmetics from the center of the circle where cosmetics were applied. The percentage of cosmetic removal for each slice was calculated and is shown in Table 5 below. It should be noted that, as in Example 13, the comparison samples were run several times, and the various results are reported below.

[0155] Table 5: Tests for different emollient ratios

[0156]

[0157]

[0158] As shown in the in vitro measurements of cleaning efficacy testing above, Example 13 scored statistically comparable to or better than commercially available silicone-containing cleaners. Example 13 was determined to be the most effective cleaning system.

[0159] Example 5: Modification of other compositions

[0160] Example 13 above was considered promising, and the formulation was modified in several ways, with efficacy tested and the effects of the modifications determined. The results for these modified formulations are presented herein.

[0161] Preparation Example 13, wherein the modification involves removing hexanediol and glycerox 767 therefrom. The resulting composition was tested in vitro (using the method described in Example 1) to determine cosmetic removal efficacy. The resulting composition was determined to reduce cosmetic removal efficacy.

[0162] Preparation Example 13, wherein the modification involves increasing Glycerox 767 to 3% by weight of the composition. This modification was found to increase the cosmetic removal efficacy against foundation; however, it was also found to increase the oily feel of the cleansing composition and the overall cost.

[0163] Preparation Example 13, wherein the modification involves adding Tween 20 at a level of 0.25%. It was found that adding this component increased the stability of the formulation.

[0164] Preparation Example 13, wherein the modification is that the total amount of emollient is reduced to 3.5% (while still maintaining the emollient ratio shown in Example 13). It was found that at this lower level of total emollient, the resulting modified cleansing composition maintained its efficacy for cosmetic removal for all three cosmetics tested.

[0165] Preparation Example 13, wherein the modification involves adding polydimethylsiloxane / trisiloxane at a level of 2%. It was found that the resulting modified composition improved skin feel and increased the removal efficacy of mascara.

[0166] Preparation Example 13, wherein the modification involves adding polydimethylsiloxane at a level of 0.5%. The resulting composition was found to improve the skin feel of the composition.

[0167] Example 6: Emulsifier

[0168] In the formulation, specifically in Example 13, various emulsifiers were tested. Example 13 was prepared using the various emulsifiers listed in Table 6 below. The stability of the resulting formulation and its in vitro and / or in vivo cosmetic removal were tested using the in vitro methods shown in Example 4 above and the in vivo methods shown in Example 1 above.

[0169] Table 6: Emulsifier Test

[0170]

[0171] Emulsifiers 1A and 1B passed the formulation stability test and demonstrated strong cosmetic removal and passed the skin feel evaluation. Emulsifier 2 passed the formulation stability test but had weaker cosmetic removal than emulsifier 1 and had the least desirable skin feel. Emulsifier 3 did not exhibit stability due to slow formulation separation. Emulsifier 3 did provide a strong skin feel but showed significantly worse cosmetic removal than emulsifier 1. Emulsifier 4 failed the stability test due to rapid separation. Emulsifier 5 failed the stability test due to overnight separation. Emulsifier 6 failed the stability test due to rapid separation. Emulsifier 7 passed the stability test and was considered the most stable resulting formulation. Emulsifier 7 also passed the skin feel test but was significantly worse than emulsifier 1 in cosmetic removal. Emulsifier 8 failed the stability test due to rapid separation. However, emulsifier 8 did pass the skin feel test but was less effective than emulsifier 1 in cosmetic removal. Emulsifier 9 failed the stability test due to overnight separation. The skin feel of emulsifier 9 was tested and passed; however, due to its lack of stability, the cosmetic removal effect of emulsifier 9 was not tested.

Claims

1. A cleaning composition comprising a fluid composition embedded in a substrate, wherein: a. The fluid composition comprises: i. A clean blend comprising a first stearate, a second stearate and a branched hydrocarbon, wherein the first stearate and the second stearate are different from each other, wherein the first stearate comprises isopropyl isostearate, the second stearate comprises decyl isostearate, and the branched hydrocarbon comprises isohexadecane. ii. A blend of sucrose fatty acid esters, wherein the blend of sucrose fatty acid esters is sucrose cocoate; iii. Water; and iv. Carbomer thickener, said thickener comprising an acrylate / C10-C30 alkyl acrylate crosspolymer; and b. The substrate comprises a nonwoven wiping material. The first stearate is present in an amount of 1.0% to 3.0% by weight of the fluid composition, the second stearate is present in an amount of 1.0% to 3.0% by weight of the fluid composition, and the branched hydrocarbon is present in an amount of 0.5% to 1.5% by weight of the fluid composition.

2. The cleaning composition according to claim 1, wherein the first stearate, the second stearate and the branched hydrocarbon are present in a weight ratio of 2:2:

1.

3. The cleaning composition of claim 1, wherein the second stearate comprises highly monobranched decyl isostearate.

4. The cleaning composition of claim 1, wherein the thickener is present in an amount of 0.12% to 0.18% by weight of the fluid composition.

5. The cleaning composition according to claim 1, wherein the blend of sucrose fatty acid esters is present in a combined amount of 0.5% to 0.75% by weight of the fluid composition.

6. The cleaning composition according to claim 1, wherein the blend of sucrose fatty acid esters is present in a combined amount of 0.5% to 1.25% by weight of the fluid composition.

7. The cleaning composition of claim 1, wherein the fluid composition further comprises a diol.

8. The cleaning composition according to claim 7, wherein the diol is hexanediol.

9. The cleaning composition of claim 7, wherein the diol is present in an amount of 1.0% to 2.0% by weight of the fluid composition.

10. The cleaning composition of claim 1, wherein the fluid composition further comprises an emulsifier.

11. The cleaning composition of claim 10, wherein the emulsifier is present in an amount of 0.75% to 2.5% by weight of the fluid composition.

12. The cleaning composition of claim 10, wherein the emulsifier comprises PEG-6 caprylic / capric glyceride.

13. A method for removing a cosmetic product from a user's skin for non-therapeutic purposes, the method comprising the steps of: a. Contact the surface of the skin with a cleansing composition, the cleansing composition comprising a fluid composition embedded in a substrate, wherein: i. The fluid composition comprises: A clean blend comprising a first stearate, a second stearate, and a branched hydrocarbon, wherein the first stearate and the second stearate are different from each other, wherein the first stearate comprises isopropyl isostearate, the second stearate comprises decyl isostearate, and the branched hydrocarbon comprises isohexadecane. A blend of sucrose fatty acid esters, wherein the blend of sucrose fatty acid esters is sucrose cocoate; Water; and Carbomer thickener, the thickener comprising acrylate / C10-C30 alkyl acrylate crosspolymer; The first stearate is present in an amount of 1.0% to 3.0% by weight of the fluid composition, the second stearate is present in an amount of 1.0% to 3.0% by weight of the fluid composition, and the branched hydrocarbon is present in an amount of 0.5% to 1.5% by weight of the fluid composition. ii. The substrate comprises a nonwoven wipe; and b. Rub the surface of the skin with the substrate to remove the cosmetic product from the surface of the skin.

14. The method of claim 13, wherein the beauty product is selected from the group consisting of: mascara, foundation, eyeliner and lipstick.

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