Fluid composition for cleansing

Abstract

To provide a composition capable of appropriately cleansing a user's skin, with low irritation to the eyes and skin, and a pleasant feel after use.SOLUTION: A fluid composition comprises: i. a cleansing blend containing isostearic acid isopropyl in an amount of 1.0 to 3.0 wt.%, isostearic acid decyl in an amount of 1.0 to 3.0 wt.%, and isohexadecane in an amount of 0.5 to 1.5 wt.%; ii. sucrose cocoate in an amount of 0.5 to 1.25 wt.%; iii. water; and iv. a thickening agent, where the thickening agent is an acrylate / C10-30 alkyl acrylate crosspolymer.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to an improved cleansing composition for use in cleansing the skin surface. Specifically, the present invention is useful for cleansing the facial area of the skin and is particularly useful for cleansing various makeup products.

Background Art

[0002] Consumers have long sought personal care products that can cleanse the skin or deliver and / or adhere beneficial agents that alleviate such problems, as they face various problems with their skin, hair, and nails. A facial cleanser should preferably provide suitable cleansing efficiency for removing foundation, mascara, and eyeliner. However, it is important to avoid sacrificing the ability of a product to properly cleanse the skin in order to reduce irritation to the user. Many delivery systems sacrifice aesthetics and cleaning ability in order to achieve stability and low irritation. This is particularly true when such products are used in sensitive areas such as the face, and more specifically, when used in very sensitive areas such as around the eyes. It is also beneficial to provide a product that feels comfortable to the user, such as having a more moisturized feel, less stickiness, and a lower level of residue. Other desirable features include a more highly cleansed feel and further softness (a cushiony feel) after use.

Summary of the Invention

Problems to be Solved by the Invention

[0003] Therefore, it is desirable to prepare a composition that can properly cleanse the user's skin, has a low degree of irritation to the eyes and skin, and has a comfortable feel after use.

Means for Solving the Problems

[0004] The present invention includes various cleansing compositions, as well as methods for using and preparing cleansing compositions. In one embodiment, there exists a cleansing composition comprising a fluid composition embedded in a substrate, wherein the fluid composition comprises a cleansing blend comprising a first stearic acid ester, a second stearic acid ester, and a branched hydrocarbon, wherein the first stearic acid ester and the second stearic acid ester are different from each other. The composition optionally comprises a blend of nonionic sucrose or glucose fatty acid esters. The composition also optionally comprises a carbomer interpolymer thickener. In this embodiment, the substrate includes a wiping product such as a nonwoven fabric wiping product or a cloth.

[0005] In another embodiment, the present invention includes a cleansing composition comprising a fluid composition embedded in a substrate, wherein the fluid composition comprises a cleansing blend comprising a first stearic acid ester present in an amount of about 1.0% to about 3.0% by weight of the fluid composition, a second stearic acid ester 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 stearic acid ester and the second stearic acid ester are different from each other. The composition optionally comprises a blend of nonionic sucrose or glucose fatty acid esters. The composition also optionally comprises a carbomer interpolymer thickener. In this embodiment, the substrate comprises a wiping product such as a nonwoven fabric wiping product or a cloth.

[0006] In other embodiments, the present invention includes a method for removing cosmetics from a user's skin, comprising the step of first bringing the surface of the skin into contact with a cleansing composition comprising a fluid composition embedded in a substrate, wherein the fluid composition comprises a cleansing blend comprising a first stearate ester, a second stearate ester, and a branched hydrocarbon, wherein the first stearate ester and the second stearate ester are different from each other. The composition optionally comprises a blend of nonionic sucrose or glucose fatty acid esters. The composition also optionally 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 cosmetics from the surface of the skin. In this embodiment, the substrate includes a wiping device such as a nonwoven fabric wiping device or a cloth. Examples of cosmetics include mascara, foundation, eyeliner, lipstick, and others. [Modes for carrying out the invention]

[0007] The present invention provides compositions and materials that deliver optimal properties. As used herein, the term “optimal” includes cleansing efficacy that is comparable to or improved compared to known cleansing agents. Optimal does not necessarily mean 100% cleansing efficiency, but rather an efficiency that is suitable for removing various cosmetics from the face. Efficient cleansing of various cosmetics is described in more detail below. Other advantages provided by the cleansing compositions of the present invention include one or more of the following: improved aesthetics, reduced stickiness, less irritation to the skin and eyes, achievement of less force and lower cost and shorter drying time, reduced amount of cleansing agent in the composition, and the ability to make the cleansing composition silicone-free. In some embodiments, the cleansing compositions of the present invention do not contain emulsifiers derived from polyisobutenyl succinic anhydride or polyisobutylene.

[0008] As used herein, unless otherwise specified, the term “percent” means weight percentage, and similarly, all quantities mentioned herein are by weight. Furthermore, as used herein, the term “water-dispersible component” means a material that, when combined with at least a weight equivalent of water, produces a homogeneous, clear or cloudy mixture. As used herein, the term “beneficial agent” includes any active ingredient to be delivered to the inside and / or surface of the skin, hair or nails at the desired location, and this includes, but is not limited to, agents such as cosmetic or pharmaceutical agents. “Cosmetic agent” means any ingredient suitable for cosmetic treatment, nourishing, and / or conditioning of hair, nails, and / or skin via topical application. “Pharmaceutical agent” means any drug suitable for topical use. As used herein, “agent” includes agents that can promote recovery from wounds and diseases.

[0009] In general, the present invention comprises a cleansing composition comprising one or more of the following: water, thickeners, humectants, emollients, preservatives, fragrances, excipients, extracts, and buffers. Various combinations of the above components are useful in the present invention. The composition may be useful in liquid or gel form for application by hand or with a combination of wiping products, sheets, or sponges, and thus can be applied by an applicator device.

[0010] A cleansing composition useful in the present invention may be formulated to include a combination of at least two emollients. As used herein, “emollient” means a material used for cleansing skin, hair, and eyelashes, for preventing or alleviating dryness, or for protecting the skin. Examples of emollients include, but are not limited to, hydrophobic compounds such as vegetable oils, mineral oils (e.g., petrolatum), fatty acid esters (e.g., isopropyl palmitate, C12-C15 alkyl benzoates) (including fatty acid esters of glycerol).

[0011] The cleansing compositions used herein comprise at least one oil phase and at least one aqueous phase, and may comprise multiple oil phases in addition to a separate aqueous phase. Each oil phase comprises the components described herein. When combined in a cleansing composition, the first oil phase, an optional second oil phase, and the aqueous phase provide a safe, effective, and pleasant cleanser. It is understood that when forming a cleansing composition, it is not necessary to form the first oil phase, the second oil phase, and the aqueous phase separately, but rather the components of each of these phases may be added to each other in any desired procedure. The designations of the first oil phase, the second oil phase, and the aqueous phase are intended to aid in the description and understanding of the components of the cleansing composition, but are not intended to designate any specific method or required steps used in forming the cleansing compositions described herein. In other words, the first and second oil phases may be contained in a single oil phase.

[0012] The present invention includes a fluid cleansing composition. The cleansing composition comprises a first oil phase and an aqueous phase, and optionally a second oil phase. As described above, the first and second oil phases may form a single oil phase and do not need to be formed separately. Furthermore, all three phases do not necessarily need to be formed separately; they may be formed in a single batch or by adding any component at any time. The designation of “phases” is intended merely to help describe the composition as a whole and is not intended to describe the formation of different, separately formed phases.

[0013] The first oil phase comprises at least three emollients, the first, second, and third emollients being distinct from each other. The first and second emollients may be present in the same or substantially the same amount. In some embodiments, the first emollient may be present in a greater amount than the second emollient.

[0014] The first skin emollient may be an alkyl ester according to formula I: R1-R2(I)

[0015] In structure (I), R1 is C3~C 22 R1 may be linear, branched, cyclic, saturated, or unsaturated. R1 may have one, two, three, or four branching points. Each branching point may have three bonds to other carbons and one bond to a hydrogen atom, or four bonds to other carbons. The side chains attached to the branching points may be methyl, ethyl, propyl, or butyl. The branching points may be at the end of R1 (opposite the ester group) or close to the ester group. Non-limiting examples include ethylhexyl, isopropyl, isopentyl, neopentyl, isohexyl, isodecyl, and isododecyl. Examples of linear R1 include propyl, hexyl, nonyl, decyl, and hexadecyl. R1 may contain one or two groups having heteroatoms such as oxygen, nitrogen, or sulfur, for example, hydroxy(-OH) and alkyl ethers (-O-methyl, -O-ethyl, and -O-R1). R1 may contain one, two, or three double or triple bonds, or both. R1 may be synthetic, for example, derived from petroleum, or derived from renewable resources such as plant and animal materials, for example, derived from triglyceride oil or from a fermentation process, or from a mixture of resources.

[0016] R2 is a carboxylic acid having the general structure: -O-CO-R3. R3 may have about 12 to about 22 carbon atoms and may be linear, branched, cyclic, saturated, or unsaturated. R3 may have one, two, three, or four branching points. Each branching point may have three bonds to other carbon atoms and one bond to a hydrogen atom, or four bonds to other carbon atoms. The side chains attached to the branching points may be methyl, ethyl, propyl, or butyl. The branching points may be at the end of R3 (opposite the ester group) or close to the ester group. Examples of R2 having branched R3 include isododecanoates, isopentadecanoates, neopentadecanoates, isohexadecanoates, and isobehenates. Examples of linear R2 include laurate, myristate, stearate, and behenate. R3 may contain one or two groups having heteroatoms such as oxygen, nitrogen, or sulfur, examples of which include hydroxy(-OH) and alkyl ethers (-O-methyl, -O-ethyl, and -O-R1). Examples of R2 having a hydroxyl group in R3 are α-hydroxystearate, α-hydroxypalmitate, and ricinolate. R2 may contain one, two, or three double or triple bonds, or both. R2 may be synthetic, for example, derived from petroleum, or derived from renewable resources such as plant and animal materials like triglyceride oil, or from fermentation processes, or from mixtures of resources.

[0017] The first oil phase may also contain a second emollient, the second emollient being an ester according to formula (I) above, in which case the second ester is different from the first ester. If R2 differs from R2 of the first ester by 0, 1, or 2 carbon atoms, then R1 of the second ester differs from R1 of the first ester by at least 5 carbon atoms. If R1 differs from R1 of the first ester by 0, 1, or 2 carbon atoms, then R2 of the second ester differs from R2 of the first ester by at least 5 carbon atoms.

[0018] The first emollient may be a stearic acid ester such as isostearate, for example isopropyl isostearate, decyl isostearate, and hexyl isostearate. Isopropyl isostearate may be commercially available under its trademark name Crodamol IPIS®. In some embodiments, when decyl isostearate is used, it may be a simple ester produced using commercially available isostearic acid or any derivative thereof useful for esterification. However, in some embodiments, decyl isostearate may be or may contain an isostearate formed from the esterification of isostearic acid or any derivative thereof useful for esterification, which has been subjected to a purification process to increase the proportion of unbranched molecules present in the acid compared to an unpurified (e.g., simple) acid. As used herein, the term "decyl isostearate" refers to a simple isostearate that is not formed from a highly unbranched acid, while the term "decyl highly unbranched isostearate" refers to an ester formed from isostearate that has a higher proportion of unbranched molecules compared to simple isostearate.

[0019] Accordingly, in some embodiments, decyl isostearate may be highly monobranched decyl isostearate, formed from isostearate having a higher proportion of monobranched molecules compared to simple isostearate. "Highly monobranched decyl isostearate" includes decyl isostearate in which at least about 60% by weight of the decyl isostearate molecule contains monoalkyl branched isostearate groups and less than about 25% by weight of the decyl isostearate molecule contains polyalkyl branched isostearate groups. Exemplary highly monobranched decyl isostearate and methods for forming highly monobranched decyl isostearate can be found in U.S. Patent No. 9,656,944, the contents of which are incorporated herein by reference in whole.

[0020] The first oil phase also comprises a second emollient, which is different from the first emollient. The second emollient may be an alkyl ester as defined above, and further, the second emollient may be a second stearic acid ester, in which case the second stearic acid ester is different from the first stearic acid ester. Suitable stearic acid esters include those defined above with respect to the first stearic acid ester. For example, the first emollient may contain isopropyl isostearate, and the second emollient may contain simple decyl isostearate and / or highly branched decyl isostearate. In some embodiments, the second emollient may be a blend of simple decyl isostearate and highly branched decyl isostearate. In embodiments where the first and second emollients are a first stearate ester and a second stearate ester, the first and second stearate esters may be present in the same or substantially equal amounts. In some embodiments, the first stearate ester may be present in a greater amount than the second stearate ester.

[0021] The first oil phase may also contain a third emollient, in which case the third emollient is different from both the first and second emollients. The third emollient may also be an alkyl ester as defined above, or in some embodiments, the third emollient may be a linear or branched hydrocarbon emollient having 8 to 20 carbon atoms. Suitable linear or branched hydrocarbon emollients include, for example, decane, dodecane, tridecane, tetradecane, squalene, hexadecane, or isoparaffin. In certain embodiments, the third emollient may be a branched hydrocarbon emollient having 10 to 20 carbon atoms, such as isohexadecane, which may be available under the trademark name Permethyl 101A, sold by Sumitomo Corporation.

[0022] When the third skin softening agent is a branched hydrocarbon, it may optionally have 1 to 5 branch points. The branch points may have three bonds to other carbons and one bond to hydrogen, or four bonds to other carbons. The side chains attached to the branch points may be methyl, ethyl, propyl, or butyl.

[0023] The third skin softening agent may contain one or two groups having heteroatoms such as oxygen, nitrogen, or sulfur, and examples include hydroxy (-OH) and alkyl ethers (-O-methyl, -O-ethyl, and -O-propyl). R1 may contain one, two, or three double bonds or triple bonds, or both. The third skin softening agent may be synthetic, for example, derived from petroleum, or may be derived from renewable resources such as plant and animal materials such as triglyceride oils, or may be derived from a fermentation process, or may be derived from a mixture of resources.

[0024] In certain embodiments, isocetane may have a structure according to formula II:

[0025]

Chemical formula

[0026] Preferably, each of the first and second skin softening agents is present in an amount greater than that of the third skin softening agent. For example, the first skin softening agent may be present in an amount of about 0.5 wt% to about 8 wt% of the composition, or about 1 wt% to about 6 wt% of the composition, preferably about 2 wt% to about 4 wt% of the composition, the second skin softening agent may be present in an amount of about 0.5 wt% to about 8 wt% of the composition, or about 1 wt% to about 6 wt% of the composition, preferably about 2 wt% to about 4 wt% of the composition, and the third skin softening agent may be present in an amount of about 0.5 wt% to about 8 wt% of the composition, or about 1 wt% to about 6 wt% of the composition, preferably about 2 wt% to about 4 wt% of the composition.

[0027] It may be desirable that the first, second, and third emollients be present in a desired ratio relative to each other. For example, if the first emollient is a first stearate ester, the second emollient is a second stearate ester, and the third emollient is a branched hydrocarbon having 8 to 20 carbon atoms, they may be present in a weight ratio of approximately 4:4:2 or approximately 2:2:1 (first stearate ester: second stearate ester: branched hydrocarbon).

[0028] In other embodiments, the first, second, and third emollients may be present in approximately equal weights (e.g., in a weight ratio of about 1:1:1). However, it may be preferable to vary the amounts of the three emollients depending on the desired feel and cleansing. This is particularly true when other phases of the composition contain specific components or have a specific texture profile. That is, the second oil phase and / or aqueous phase may contain components that provide a desired texture profile for the entire composition, and therefore the first oil phase can provide a higher level of cleansing without needing to focus on the desired texture. In contrast, the second oil phase and / or aqueous phase may contain components that do not provide a desired texture profile for the entire composition, and therefore the first oil phase may provide a suitable cleansing profile while also focusing more on the desired texture.

[0029] While the emollient in the first oil phase is useful for cleansing, it is desirable that the entire cleansing composition of the present invention not only provides cleansing for various types of makeup, including durable / waterproof makeup, but also meets several criteria, including providing less stickiness, high moisturizing power, minimal residue, less greasiness, and a softer / cushion-like feel.

[0030] For example, in some embodiments, it may be desirable to have a third emollient, such as a branched hydrocarbon, present in a smaller weight than the first emollient and a smaller weight than the second emollient. In other embodiments, it may be desirable to have a third emollient, such as a branched hydrocarbon, present in a larger amount than one or both of the first and second emollients. Therefore, depending on the components of the second oil phase and the aqueous phase, the components in the first oil phase can be varied to suit the cleansing and skin-feel profile of the overall composition.

[0031] Therefore, in some embodiments, the ratio of the three emollients may be 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 embodiments, particularly when the third emollient is present in greater quantities than the first and second emollients, the weight ratio of the three emollients may be about 1:1:1.1 to about 1:1:3, or 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 cleansing composition, or about 5% to about 12% by weight of the total cleansing composition, or about 7% to 10% by weight of the total cleansing composition. The combined weight percentage of the first, second, and third skin emollients may preferably be about 7% by weight of the total cleansing composition.

[0032] One emollient, di-PPG-3 myristyl adipate, may not provide the desired effect in this invention. Therefore, it may be preferable that the cleansing compositions described and used herein do not contain di-PPG-3 myristyl adipate.

[0033] The composition preferably includes a second oil phase. The second oil phase may contain, for example, cleansing ingredients such as humectants, nonionic surfactants (including non-foaming nonionic surfactants), glycerides, preservatives, and fragrances.

[0034] The second oil phase may contain one or more humectants, including aliphatic diols. Other commercially available humectants that can provide moisturizing and conditioning properties to the cleansing composition are suitable for use in the present invention. If present, the humectant is preferably present in an amount of about 0.1 percent to about 4 percent, more preferably about 0.5 percent to about 2 percent, and most preferably about 0.5 percent to about 1 percent, based on the total weight of the composition. Examples of suitable humectants are, non-exclusively, 1) water-soluble liquid polyols selected from the group including glycerin, propylene glycol, hexylene glycol, butylene glycol, pentylene glycol, dipropylene glycol, and mixtures thereof; 2) Formula III: HO-(R″O) b -H (III) [In the formula, R″ is an alkylene group having approximately 2 to approximately 4 carbon atoms, and b is an integer from approximately 1 to approximately 10], such as PEG-4 polyalkylene glycol; 3) Formula IV: CH3-C6H 10 O5-(OCH2CH2) c -OH (IV) [wherein c is an integer between approximately 5 and approximately 25] methyl glucose polyethylene glycol ether; 4) Urea; 5) Fructose; 6) Glucose; 7) Honey; 8) Lactic acid; 9) Maltose; 10) Sodium glucuronate; and 11) Mixtures thereof.

[0035] The second oil phase may also contain one or more nonionic surfactants, including essentially non-foaming nonionic surfactants. Exemplary preferred essentially non-foaming ionic surfactants include, for example, blends of sucrose fatty acid esters. These blends may include sucrose combined with fatty acids such as stearic acid, lauric acid, myristic acid, oleic acid, palmitic acid, and combinations of one or more of these. One such preferred blend of sucrose fatty acid esters is coconut fatty acid sucrose, available from Evonik Industries under the trademark name Tegosoft® LSE.

[0036] "Essentially non-foaming" means that when the surfactant is used with the composition of the present invention, the column height measured by the Ross-Miles foaming test is less than approximately 20 mm. See 18(I.) Oil & Soap 99-102 (1941) ("Ross-Miles Test"), incorporated herein by reference. The cleansing composition and personal care system may be rinseable with water or wiped off. Any non-foaming nonionic surfactant used in the cleansing composition described herein is preferably rinseable with water or requires no rinsing at all. In some embodiments, it may be useful to use a blend of sorbitan stearate and sucrose coconut fatty acid, available from Croda under the trademark name "Arlacel 2121," as the non-foaming nonionic surfactant. The non-foaming nonionic surfactant may be present in any desired amount, and in some embodiments, it may be present in an amount of about 0.1% to about 2% by weight of the total cleansing composition, or in an amount of about 0.50% to about 0.75% by weight of the total cleansing composition.

[0037] In addition to the above-mentioned skin emollients, the cleansing composition may also contain a polymer emulsifier. Possible useful polymer emulsifiers include, for example, glycers or triglycerides, including caprylic / capric triglyceride or PEG-6 caprylic / capric glyceride. As used herein, the term “polymer emulsifier” means a compound capable of emulsifying a system, wherein the polymer emulsifier has a molecular weight of at least about 5000 and is preferably a block copolymer having a hydrophilic portion and a hydrophobic portion. When an effective amount is used to emulsify the personal care system, this polymer emulsifier surprisingly does not cause significant eye irritation. Specifically, when this emulsifier-containing composition was used on the eye area of ​​80 consumers, less than 5% of the users reported discomfort around the eye area. Other suitable polymer emulsifiers include, non-exclusively, polyethylene glycol-30 dipolyhydroxystearate available from Croda under the trademark name "Cithrol DPHS"; dimethicone copolyol available from Goldschmidt Chemical Corporation under the trademark name "Abil EM® 90"; substituted acrylates such as those available from Goodrich Corporation under the trademark name "Pemulen®"; and mixtures thereof. The polymer emulsifier may be present in any desired amount, and in some embodiments may be present in an amount of about 0.1% to about 2% by weight of the total cleansing composition, or in an amount of about 0.75% by weight of the total cleansing composition.

[0038] The second oil phase may also contain a preservative or a preservative blend. Suitable preservatives include components such as ethylhexylglycerin, dehydroacetic acid, benzoic acid, phenoxyethanol, polyaminopropyl biguanide, chlorphenesin, PEG-4 laurate, iodopropynyl butylcarbamate, and mixtures thereof. The preservative may be present in any desired amount, and in some embodiments, it may be present in an amount of about 0.01% to about 2% by weight of the total cleansing composition, or in an amount of about 0.1% to about 1% by weight of the total cleansing composition. In one embodiment, the preservative blend includes chlorphenesin and phenoxyethanol.

[0039] The second oil phase may also contain a fragrance or fragrance blend. The fragrance may contain essential oils or fragrance compounds, fixatives, extracts, vitamins, and solvents. The fragrance may be present in any desired amount, and in some embodiments, it may be present in an amount of about 0.01% to about 1% by weight of the total cleansing composition, or in an amount of about 0.1% to about 0.2% by weight of the total cleansing composition.

[0040] The second oil phase may be present in an amount of about 1% to about 10% by weight of the total cleansing composition, or about 2.5% to about 5% by weight of the total cleansing composition.

[0041] The first and second oil phases may be formed together to produce a single oil phase, or they may be formed as separate components in the cleansing composition. The designations of the first and second oil phases do not imply the need for the separate formation of these two oil phases. When processing the entire cleansing composition, it may be desirable to process the two oil phases separately, or the two oil phases may be processed as a single phase with a variable order of component addition.

[0042] The composition includes an aqueous phase. Similar to the first and second oil phases, the aqueous phase does not necessarily need to be processed as a separate phase from the first and / or second oil phases. The aqueous phase is present in the largest amount compared to the first and second oil phases, and may be present in an amount of about 75% to about 95% by weight, or about 80% to about 85% by weight, of the total cleansing composition. The aqueous phase includes water or another suitable carrier. Water may be present in an amount of about 75% to about 90% by weight, more preferably about 80% to about 88% by weight, of the final composition.

[0043] The first oil phase, the second oil phase, or the aqueous phase may further contain one or more thickeners that may be hydrophilic thickeners. Examples of suitable hydrophilic thickeners include, non-exclusively, carbomers, acrylate copolymers and acrylate crosspolymers available from BFGoodrich as "Carbopol® ETD2020" (INCI: acrylate / C10-C30 alkyl acrylate crosspolymer) and Carbopol® Ultrez 10 NF Polymer (INCI: carbomer), cetyl ether-modified hydroxyethylcellulose available from Hercules as "Natrosol® Plus", polyvinyl methyl ether / maleic anhydride (PVM / MA) decadien crosspolymer available from International Specialty Products as "Stabileze QM", and copolymers and mixtures thereof, with carbomers being preferred. Examples of suitable acrylate copolymers include, non-exclusively, the acrylate copolymer available from Rohm & Haas under the trademark name "Aculyn® 33", the acrylate / aminoacrylate copolymer available from National Starch & Chemical Company under the trademark name "Structure Plus", the acrylate / steareth-20 itaconic acid copolymer available from National Starch & Chemical Company under the trademark name "Structure 2001", the acrylate / ceteth-20 itaconic acid copolymer available from National Starch & Chemical Company under the trademark name "Structure 3001", the acrylate / steareth-20 methacrylate copolymer available from Rohm & Haas under the trademark name "Aculyn® 22", and mixtures thereof. Carbopol ETD 2020, referred to as the "carbomer interpolymer thickener," is preferred in the present invention. The thickening agent may be present in an amount of approximately 0.05% to approximately 0.50% by weight of the total cleansing composition, or approximately 0.12% to approximately 0.18% by weight of the total cleansing composition.

[0044] The aqueous phase may contain a buffer. Suitable buffers include, for example, citrate buffer, phosphate buffer, lactate buffer, gluconate buffer, and sodium hydroxide. The buffer may be present in any amount desirable to achieve the desired pH. In some embodiments, the buffer may be a blend of 20% sodium hydroxide and water or another solvent. The buffer may be present in an amount of about 0.01% to about 0.5% by weight of the final composition, more preferably about 0.2% by weight of the total cleansing composition.

[0045] In some embodiments, the present invention includes a cleansing composition comprising, or essentially comprising, a first oil phase, a second oil phase, and an aqueous phase. Preferably, the aqueous phase is present in the largest weight in the cleansing composition. Preferably, the first oil phase is present in a larger weight than the second oil phase. The present invention may also include a concentrated blend in which three phases are present but the amount of water is significantly reduced, and the concentrate may be prepared and maintained separately, with water added at a later date. Using such a concentrate may be particularly useful for manufacturing and shipping purposes, especially when the final composition (including water) is prepared separately from the other components.

[0046] The compositions described herein are useful for removing various cosmetics from the user's skin, and are particularly useful for efficiently removing mascara, foundation, lipstick, and eyeliner without leaving heavy or sticky residues. Mascara has a reputation for being a difficult cosmetic material to remove from the skin. This is because mascara adheres to a high concentration of film-forming substances and contains relatively high concentrations of hydrophobic materials. Furthermore, mascara contains a high concentration of carbon-based dark pigments, resulting in a dark color. In addition, because mascara is typically applied to the eyes or eyelashes, cleaning requires a gentle, low-pressure, non-planar application. Eyeliner exhibits its own difficulty in removal, as it contains titanium dioxide, iron oxide, mica, silica, and higher concentrations of pigments / colorants, which can make it even more difficult to remove. In addition, like mascara, eyeliner is often applied to the eyes or eye area, and cleansing requires a gentle, low-pressure, non-planar application. Foundation also presents some degree of difficulty. Foundations are typically emulsions and may contain silicones, which are what cause them to remain on the skin. Today's cosmetics are developed for "24-hour" use, meaning they stay on the user's skin for extended periods. These "long-lasting" waterproof cosmetics have high resistance to movement, making them difficult to remove.

[0047] It is particularly desirable to provide a material that effectively and sufficiently removes these three cosmetic materials as needed. Furthermore, it is desirable to provide a composition that does not leave an oily or sticky residue on the surface of the skin, because such oily cleansers can be difficult to remove and may leave the user with an unclean feeling. In addition, it is important that the cleansing composition is low-irritation or non-irritating to the skin, especially the eyes. A soft and pleasant feel on the user's skin during and after use is also desirable. The present invention provides a cleansing composition that has the desirable properties defined herein while also providing suitable cleansing ability.

[0048] Another embodiment of the present invention aims to provide a personal care system comprising, or essentially comprising, a) a first oil phase, b) a second oil phase, and c) an aqueous phase, based on the total weight of the personal care system. The personal care system may be used as a liquid or gel composition applied to the skin by the user's hand or other tool. Optionally, the personal care system may be impregnated into or embedded in a substrate such as a wipe or other application tool, in which case the user can simply remove the wipe or other application tool from its package and use the wipe or other application tool to achieve cleansing. In a preferred embodiment, the cleansing composition may be impregnated into individual wipes, and the user can use the wipe to cleanse their skin. Individual wipes may be packaged in a dispenser containing multiple wipes, or in a dispenser containing only one wipe. Preferred substrates include wipes, which are described in more detail below.

[0049] Personal care systems and cleansing compositions may optionally further 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 or pharmaceutical agent, which is to be delivered to the inside and / or surface of the skin, hair, or nails at the desired location. “Cosmetic agent” means any ingredient suitable for cosmetically treating, nourishing, and / or conditioning the hair, nails, and / or skin via topical application. “Pharmacist” means any drug that is either hydrophobic or hydrophilic in nature and suitable for topical use. As used herein, “pharmaceutical” includes agents that can promote recovery from wounds and diseases. Beneficial agents may be contained in the first oil phase, the second oil phase, or the aqueous phase, if used, and in compatibility with other ingredients in the selected phase.

[0050] Useful agents as used herein may be classified according to their therapeutic benefits or their assumed mechanism of action. However, it should be understood that useful agents as used herein may, in some cases, provide two or more therapeutic benefits or act through one or more mechanisms of action. Therefore, the specific classifications provided herein are for convenience only and are not intended to limit the application(s) listed. In addition, compounds specified below as suitable for use as useful agents may be used in amounts exceeding or exceeding those that may be used for other purposes in cleansing compositions or personal care systems.

[0051] Examples of suitable beneficial agents include, non-exclusively, depigmentants; reflective agents; film-forming polymers; humectants; amino acids and their derivatives; antibacterial agents; anti-allergic agents; anti-acne agents; anti-aging agents; anti-wrinkle agents, disinfectants; analgesics; antitussives; antipruritics; topical anesthetics; anti-hair loss agents; hair growth stimulants; hair growth inhibitors, antihistamines (e.g., Mandragora vernalis) Vernalis, feverfew, etc.); anti-infectives (e.g., catechu, aloe vera, lily of the valley, echinacea, eucalyptus, peppermint, dog rose, sassafras albidum, etc.); anti-inflammatory agents; anti-nausea agents; anticholinergics; vasoconstrictors; vasodilators; wound healing promoters; peptides, polypeptides, and proteins; deodorants and antiperspirants; pharmaceuticals; emollients and moisturizers; skin tighteners, vitamins; sunscreens; skin whitening agents; antifungal agents (e.g., cornflower, rhododendron, and antifungal agents for foot preparations); detoxification Hair ointments; shaving preparations; topical analgesics; fragrances; anti-irritants; hemorrhoid remedies; insecticides; poison ivy products; lacquer products; burn products; diaper rash remedies; heat rash remedies; vitamins, amino acids and their derivatives; herbal extracts; retinoids; flavenoids; sensory agents; antioxidants; skin conditioners; hair bleaching agents; chelating agents; cell regeneration enhancers; colorants; sunscreens, active ingredients disclosed in U.S. Patent No. 6,063,397 (which are incorporated herein by reference), anti-edema agents, collagen enhancers, and mixtures thereof.

[0052] Suitable anti-edema agents include, non-exclusively, natural bisabolol, synthetic bisabolol, and mixtures thereof.

[0053] Examples of suitable vasoconstrictors include, non-exclusively, horse chestnut extract, Japanese pepper, and mixtures thereof.

[0054] Examples of suitable anti-inflammatory agents include, non-exclusively, benoxaprofen, centella asiatica, bisabolol, feverfew (whole), feverfew (parthenolide-free), green tea extract, green tea concentrate, hydrogen peroxide, lycopene (including "Lyc-o-Pen" available from LycoRed Natural Products Industries, Ltd.), oat oil, chamomile, and mixtures thereof.

[0055] Examples of collagen fortifiers include, non-exclusively, vitamin A, vitamin C, and mixtures thereof.

[0056] A non-exclusive example of a suitable skin tightening agent is dimethylaminoethanol ("DMAE").

[0057] Suitable antipruritic and skin protectants include, non-exclusively, oatmeal, β-glucan, feverfew, soybeans and their derivatives, sodium bicarbonate, colloidal oatmeal, surfactant-based colloidal oatmeal cleansers, Anagallis arvensis, evening primrose, and verbena. This antipruritic agent may be used in an amount of about 0.01 percent to about 40 percent, preferably about 1 percent to about 5 percent, based on the total weight of the cleansing composition.

[0058] As used herein, colloidal oatmeal means a powder obtained from the grinding and further processing of whole grain oats that meet the U.S. standards for first or second oats. Colloidal oatmeal has the following particle size distribution: less than 3 percent of the total particles are larger than 150 micrometers, and less than 20 percent of the total particles are larger than 75 micrometers. Suitable examples of colloidal oatmeal include, but are not limited to, "Tech-O" available from Beacon Corporation and colloidal oatmeal available from Quaker.

[0059] Suitable reflective materials include, non-exclusively, mica, alumina, calcium silicate, glycol dioleate, glycol distearate, silica, sodium magnesium fluorosilicate, and mixtures thereof.

[0060] Suitable film-forming substances include acetyltyrosine amide, zinc pyrithione, coal tar, benzoyl peroxide, selenium sulfide, hydrocortisone, sulfur, menthol, pramoxin hydrochloride, tricetylmonium 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, elthromycin, tretinoin, and mixtures thereof.

[0061] One type of beneficial agent includes therapeutic ingredients effective in treating dandruff, seborrheic dermatitis, and psoriasis, as well as the symptoms associated therewith. Examples of such suitable beneficial agents include, non-exclusively, zinc pyrithione, anthraline, shale oil and its derivatives (e.g., sulfonated shale oil), selenium sulfide, sulfur; salicylic acid; coal tar; povidone-iodine, ketoconazole, and dichlorophenylimidazolodioxane (Janssen). Examples include imidazoles such as clotrimazole, itraconazole, miconazole, crimbazole, thioconazole, sulconazole, butoconazole, fluconazole, miconazole nitrate (marketed under the trademark name "Elubiol" by Pharmaceutica (NV)), and any possible stereoisomers and derivatives thereof; antipsoriatic drugs such as piroctone olamine (octopirox); selenium sulfide; cyclopirox olamine; and vitamin D analogues, such as calcipotriol, calcitriol, and tacaretrol; vitamin A analogues such as vitamin A esters (e.g., vitamin A palmitate, retinol, and retinoic acid); corticosteroids such as hydrocortisone, clobetazone, butyrate, and clobetasol propionate, and mixtures thereof.

[0062] The amount of beneficial agent to be combined with the cleansing composition or emulsion may vary depending on, for example, the ability of the beneficial agent to penetrate through the skin, hair, or nails, the specific beneficial agent selected, the desired specific benefit, the user's sensitivity to the beneficial agent, the user's health condition, age, and the condition of the skin, hair, and / or nails. In short, the beneficial agent is used in a “safe and effective amount” under a reasonable risk-benefit ratio in sound medical judgment, i.e., an amount high enough to produce the desired benefit to the skin, hair, or nails or to correct a specific condition to be treated, but low enough to avoid serious side effects. If included, the beneficial agent may be present in the cleansing composition or personal care system in an amount of about 0.01 percent to about 5.0 percent, preferably about 0.01 percent to about 2.0 percent, and more preferably about 0.01 percent to about 1.0 percent, based on the total weight of the composition / system.

[0063] Optionally, commercially available detergent thickeners capable of imparting appropriate viscosity to the conditioning composition are suitable for use in the present invention. When used, the detergent thickener should be present in the composition in an amount sufficient to raise the Brookfield viscosity of the composition to a value of about 500 to about 10,000 centipoise. Non-exclusive examples of suitable detergent thickeners include formula V: HO-(CH2CH2O) z H (V) Monoester or diester of polyethylene glycol [wherein z is an integer between approximately 3 and approximately 200]; Examples include fatty acids containing approximately 16 to 22 carbon atoms; fatty acid esters of ethoxylated polyols; ethoxylated derivatives of monoesters and diesters of fatty acids and glycerol; hydroxyalkylcellulose; alkylcellulose; hydroxyalkylalkylcellulose; and mixtures thereof. More specifically, suitable detergent thickeners include, non-exclusively, behen alkonium chloride; cetyl alcohol, quaternium-46, hydroxyethylcellulose, cocodimonium chloride, polyquaternium-6, polyquaternium-7, quaternium-18, oleic acid / PEG-18 glycerol coconut fatty acid, mixtures of acrylate / steareth-50 acrylate copolymer, laureth-3 and propylene glycol (marketed by Goldschmidt under the trademark name "Antil 208"), mixtures of cocamidopropyl betaine and glyceryl laurate (marketed by Goldschmidt under the trademark name "Antil HS60"), propylene glycol, PEG-55 and mixtures of propylene glycol oleate (marketed by Goldschmidt under the trademark name "Antil 414 liquid"), and mixtures thereof. Preferred detergent thickeners include polyethylene glycol esters, and more preferably PEG-150 distearate, which is available from Stepan Company (Northfield, Ill.) or from Comiel, SpA (Bologna, Italy) under the trademark name "PEG6000DS".

[0064] The above cleansing composition can be prepared by combining the desired components in a suitable container and mixing them under any desired conditions using any conventional mixing means known in the art, such as a mechanically agitated propeller or paddle. The process may include separate steps of 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 cleansing composition. Alternatively, the cleansing composition may be formed by forming the first and second oil phases as a single oil phase, in which case the order of adding the components is variable, and then combining the single oil phase with the separately formed aqueous phase. Alternatively, the cleansing composition may be formed by combining the components in the first oil phase, the second oil phase, and the aqueous phase together into a single composition, in which case the order of adding the components is variable.

[0065] The cleansing composition may be provided in a container in the form of a liquid, gel, or cream, so that the user can apply the composition to the skin with their hands, or with a cloth, wipe, sheet, or other device. Alternatively, the composition may be embedded in or impregnated into one wipe or multiple sheets or wipes, so that the composition can be applied to the skin by wiping with a sheet, wipe, or other device.

[0066] Since the composition is applied to the face and preferably used to remove cosmetic materials, it may be desirable to impregnate it into a sheet or wipe and provide it to the user in this form. The user removes the impregnated wipe from a suitable airtight package and applies it directly to the skin. Thus, the system or package may contain multiple wipes in a resealable package, each of which is impregnated with or otherwise contains the cleansing composition of the present invention. In other embodiments, a single individual wipe may be housed in its own airtight package or container, which may be discarded after use of the wipe contained therein. The wipe is preferably disposable and contains biodegradable components, thereby providing environmentally friendly integrity. Materials for wiping products include, for example, natural, biodegradable, or synthetic fibers or filaments (e.g., wool, silk, jute, hemp, cotton, flax, sisal, or ramie), or synthetic materials (e.g., rayon, cellulose esters, polyvinyl derivatives, polyolefins such as polyethylene and polypropylene, polyamides such as nylon 6 and 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) for nonwoven base materials and methods for manufacturing them. One particular base material that may be useful is an embossed spunlace 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 may vary, but generally ranges from about 20 grams / m² to about 500 grams / m², for example, from about 50 grams / m² to about 150 grams / m². The substrate of the wiping material may be of any desired size, and in some embodiments may have any desired area including about 2 to 10 inches in length and about 2 to 10 inches in width, more preferably about 7 to 8 inches in length and about 7 to 8 inches in width.Other suitable materials for wiping products are described in European Patent No. 1,283,019(B1), U.S. Patent No. 9,622,944, and U.S. Patent Application No. 2016 / 0367102, the entirety of each of these disclosures is incorporated herein by reference.

[0067] In some embodiments, the composition is provided to the user in a liquid dispensing bottle or container, in which case the user applies the composition to a wiping device or other applicator device, and the user cleanses the skin using the applicator to which the composition has been applied. The composition may be sold in a dispensing bottle alone, or in a kit in which a dispensing bottle containing the composition and several applicator devices such as wiping devices or balls are packaged together.

[0068] The present invention includes not only the cleansing composition described above, but also a method of using the cleansing composition. This method includes the steps of applying an effective amount of the composition to the skin (including the skin of the face and the skin near the eyes), and cleansing the skin with the composition. The composition can be applied to the skin by hand or by using an applicator (e.g., a sheet, a moistened wipe, a sponge, a brush, etc.). The composition can be applied when the skin is wet or dry, and after application, it can be wiped off, washed off, or left to dry. It is particularly desirable to apply the composition to the skin via a pre-soaked wipe and leave the skin to dry without further washing or cleaning by the user. Used wipes can be discarded by the user. The present invention as described herein can be practiced without any elements, components, or steps not specifically disclosed herein, or may include additional elements or steps not expressly disclosed herein.

[0069] As described above, the present invention aims to provide a composition that can be used to effectively and efficiently clean various cosmetics from the surface of a user's skin. The composition of the present invention can, for example, efficiently remove foundation, lipstick, eyeshadow, lip liner, eyebrow pencil, pomade, brush mascara, concealer, highlighter, and / or eyeliner. Furthermore, the composition of the present invention may be substantially silicone-free, or not silicone-free at all.

[0070] The present invention will be better understood through the following embodiments. These embodiments are illustrative and are not intended to limit the invention to any specific combination of elements. [Examples]

[0071] The cleansing compositions and products described herein not only efficiently remove desired makeup products from the skin but also provide users with numerous beneficial features. Such desirable features include, for example, less sticky feeling left on the applied skin, a low or no level of tingling (e.g., tingling around the eyes), a soft / cushion-like feel, less residue left behind, and a moisturizing feel.

[0072] The following non-limiting embodiments demonstrate the effectiveness of the present invention.

[0073] Example 1 - Screening test of undiluted emollient Each emollient was individually tested in vitro according to the undiluted emollient screening instrument test protocol and then in vivo using the undiluted emollient screening phase protocol detailed below. The undiluted emollients were screened for effectiveness based on their efficacy in removing makeup (e.g., foundation, eyeliner, and mascara), skin feel, and cost. As used herein, the term “undiluted” refers to a sample containing only the emollient, with no other ingredients added. “Undiluted” emollient tests may include emollients embedded in or dispersed on / inside the substrate of a wipe product, as described below.

[0074] Example 1A - Undiluted emollient screening in vitro test Each emollient was tested in vitro to determine its cleansing efficacy in removing foundation (Revlon ColorStay® Foundation 450 Mocha), eyeliner (L'Oreal Paris Infallible Never Fail Eyeliner, Black 511), and mascara (CoverGirl LashBlast Fusion Water Resistant Mascara 885 very back).

[0075] In vitro tests were conducted using a Sheen wet abrasive scrub tester (REF 903 / PG) and an X-rite spectrophotometer (Hunter Labscan XE), followed by a Tuke Kramer colorimetric evaluation (measurement of Delta E), according to the protocol described below. 1. Four silicone strips were prepared for each emollient sample. 2. Each makeup formula was applied to a 4cm x 2cm rectangular area on its individual silicone strip (one makeup formula per silicone strip), and left overnight to dry. A 3,400g sample was placed on a Sheen wet abrasive scrub tester, and the attached material was wiped clean. 4. The baseline color level was established by reading the silicone strip after it had been dried overnight using a spectrophotometer. 5,500 microliters of emollient was applied to the makeup on a silicone strip and spread over the area for 15 seconds using a finger cot (before and after). 6,500 microliters of skin emollient were applied to a wipe material, an embossed spunlace nonwoven fabric made from a mixture of 20% rayon (1.7 dtex), 40% polyester (PET) (1.3 dtex), and 40% polyester (PET) (1.7 dtex) (this resulting wipe material is referred to as the "sample substrate"). 7. A scrub test was performed on each sample by rubbing the sample substrate, which was embedded with a skin emollient, for a predetermined number of passes: a. Foundation: 5 passes b. Eyeliner: 3 passes c. Mascara: 30 passes 8. The color level obtained was determined by reading each silicone strip after the scrub test using a spectrophotometer. The net change in color measured between the first and second spectrophotometer readings is referred to as "ΔE".

[0076] Example 1B - Undiluted emollient screening in vivo test Each emollient was tested in vivo for its cleansing efficacy in removing foundation (Revlon ColorStay® Foundation 450 Mocha), eyeliner (L'Oreal Paris Infallible Never Fail Eyeliner, Black 511), and mascara (CoverGirl LashBlast Fusion Water Resistant Mascara 885 very back).

[0077] The general in vivo testing procedure uses a protocol that can be described as follows: • A panel of two human individuals was used: P1 and P2 • Draw three circles 1.5 inches apart on the palm side of the forearms of the two panels. • Apply the makeup formula (0.001g foundation, 0.002g eyeliner, and 0.015g mascara) to a circle and let it dry for 45 minutes. • I took a picture of the dirty circle that had not been wiped clean. Apply approximately 0.015-0.020 g of undiluted emollient and wipe the embossed sample substrate back and forth for 15 seconds. • Wipe once with a cotton pad and take a photo of the wiped circle. • A second wipe was performed using a clean area of ​​the cotton pad, and a second photograph of the wiped circle was taken. Panelists were asked to rank the top 5 samples on a scale of 1 to 5 based on their cleansing effectiveness. Rank 1 was considered the most effective cleansing product, and rank 5 was considered the least effective. Products below the top 5 were not ranked.

[0078] Following the in vitro and in vivo procedures described above, several undiluted emollients were tested for their cleansing efficacy. Table 1 below shows the results of these in vitro and in vivo tests. Note that the combination of PEG-20 glyceryl triisostearate and isohexadecane was not tested in vivo because it was determined not to contribute to makeup removal when PEG-20 glyceryl triisostearate was evaluated as a single emollient. In addition, polymer esters (marketed by Croda as ModiSurf Lift) were not tested in vitro because their primary use is in home care and household spaces. PPG-3 benzyl ether ethylhexanoate was further tested in a separate consumer study, but this composition was not further tested.

[0079] [Table 1]

[0080] The tests described above showed that isopropyl isostearate, isohexadecane, and decyl isostearate (deblended decyl isostearate and isostearyl isostearate) consistently performed well in terms of cleansing efficacy and provided a pleasant feel on the skin. Based on these promising test results, these three emollients were selected as the primary, undiluted basic emollients for the further tests described below.

[0081] Example 2 - Test of undiluted emollient blend Various emollients were blended in equivalent ratios (1:1:1 by weight of active emollients) and tested for cleansing efficacy and skin feel. The emollients tested, in various blends, contained isopropyl isostearate (marketed as Crodamol® IPIS), diisostearyl adipate (marketed as Liquiwax® DISA), PPG-3 isostearyl methyl ether (marketed as Arlamol® LST), PPG-3 benzyl ethylhexanoate (marketed as Crodamol® SFX), decyl isostearate and isostearyl isostearate (marketed as Crodamol® SSA), PPG-3 benzyl myristate (marketed as Crodamol® STS), di-PPG-3 myristyl adipate (marketed as Cromollient® DP3-A), and dioctyldodecyl dodecanediate (marketed as Liquiwax® DIADD).

[0082] Various emollient blends were tested in vitro and in vivo to determine their effectiveness in removing foundation (Revlon ColorStay® Foundation 450 Mocha), eyeliner (L'Oreal Paris Infallible Never Fail Eyeliner, Black 511), and mascara (CoverGirl LashBlast Fushion Water Resistant Mascara 885 very black). The in vivo tests were conducted according to the procedure outlined in Example 1 above. The results of the blend efficacy are shown in Table 2 below.

[0083] [Table 2]

[0084] Based on the in vivo and in vitro tests conducted, Liquiwax® DISA was not continued due to a perceived sticky feeling and poor cleansing efficacy against foundation and powder. Liquiwax® DIADD was not continued due to its performance against foundation. Crodamol® STS and Liquiwax® DIADD were not continued due to their performance against mascara. Cromollient® DP3-A was not continued due to a sticky feeling. Arlamol® LST was not continued due to its performance against mascara.

[0085] The undiluted emollient blend of Crodamol® IPIS + Crodamol® SSA + Crodamol® SFX (i.e., isopropyl isostearate + isostearyl isostearate + PPG-3 benzyl ethylhexanoate) was selected as the primary emollient blend for additional formulation testing because it demonstrated net change ΔE values ​​of 14.6 and 16.6 for foundation and mascara in in vitro tests, and in two separate in vivo foundation and mascara tests, three panelists scored it as #1, with only one panelist scoring it as a bottom 5.

[0086] Example 3: Composition containing various emollient blends Various compositions were prepared to determine the cleansing efficacy of emollient-containing compositions. Each composition contained (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 for the removal of various makeup cosmetics (foundation (Revlon ColorStay® Foundation 450 Mocha), eyeliner (L'Oreal Paris Infallible Never Fail Eyeliner, Black 511), and mascara (CoverGirl LashBlast Fushion Water Resistant Mascara 885 very black)).

[0087] The tested formulations were prepared and impregnated into sample substrate wiping supplies. The sample substrates were as described above. The formulations were applied at a rate of 3.7 g of lotion per 1 g of substrate wiping supply. The tested formulations are listed in Table 3A below.

[0088] [Table 3]

[0089] Next, two human subjects evaluated the wiping products according to the procedure described below. • Draw three 1" circles 1.5" apart on the palmar side of the forearms of the two panels. • Apply the makeup formula (0.001g foundation, 0.002g eyeliner, and 0.015g mascara) to a circle and let it dry for 45 minutes. • Each sample substrate-impregnated wiping product (Examples 1 to 6) was prepared and provided to the subjects. Panelists were asked to wipe the area three times with a wiping product and evaluate each sample individually. Each sample was ranked on a scale of 1 to 7, where a score of 1 was considered the best or most desirable wiping composition, and a score of 7 was considered the least desirable wiping composition.

[0090] [Table 4]

[0091] Examples 1, 2, and 4-6 were deemed not to meet the optimal cleansing efficacy based on the panel data above. Example 3 showed sufficient cleansing efficacy and was ranked and scored as #1, but due to the overall requirements, this formulation was not further tested.

[0092] The inventors also tested the individual components of Crodamol® SSA and determined that decyl isostearate in Crodamol® SSA improved the effectiveness of its makeup-removing efficacy. Finally, based on the examples described herein and the ability to remove mascara as shown in the “undiluted” skin softening test above, isohexadecane was selected for further testing.

[0093] Example 4 - Compositions with various component ratios Based on the results of the undiluted and compositional tests described above, further compositions were tested for efficacy. Specifically, emollients in different ratios were tested to determine whether makeup removal and / or other skin-feel criteria were affected by the ingredient ratios. The compositions were prepared as shown in Table 4A below. The ratios shown in the table refer to the weight ratios of the three emollients listed in the table.

[0094] [Table 5]

[0095] Each composition was prepared and comprised (i) an aqueous phase, (ii) a first oil phase containing a emollient blend, and (iii) a second oil phase. The first oil phase contained a combination of three emollients as described in Table 4A above.

[0096] Tables 4B and 4C below show exemplary component levels of the second oil phase and aqueous phase, respectively. The amounts of the second oil phase and aqueous phase can be changed depending on the desired composition.

[0097] [Table 6]

[0098] [Table 7]

[0099] Examples 7-14, as described in Table 4A, were prepared, each containing the three component phases described in Tables 4A, 4B, and 4C. The tested formulations are listed in Table 4D below.

[0100] [Table 8]

[0101] The compositions listed in Table 4D were prepared and tested for their in vitro cleansing ability. Comparative samples, including cleansing compositions found in commercially available silicone-containing cleansers (Neutrogena® Makeup Removing Cleanser Towelettes), were also tested. Each composition was tested four times. A white, high-density polypropylene (HDPP) tip was applied to either a 0.015 g Revlon Colorstay 450 Mocha foundation or a 0.015 g Hydro Boost Waterproof Mascara Black. The makeup was applied to a 1-inch diameter circular area. The makeup was allowed to dry for 1 hour.

[0102] The oil phase was combined with the aqueous phase separately, and each phase was blended at room temperature. The aqueous phase was mixed until homogenized. Once homogenized, the aqueous phase was added to the oil phase, and the resulting combinations were mixed together.

[0103] For each composition, including the comparative composition, a sample substrate (as defined above) was used. Each sample substrate wiping material, measured at 7.2 × 7.4 inches, was moistened by adding 3.7 g of the formulation per gram of fabric. The moistened wiping material was placed on a 50 g thread attached to an Instron instrument (Instr Met Corporation, IM 1122_4585). The Instron instrument test settings were as follows: Cycle count: 4, 50 inches / min, Endpoint 1: 6.0, Endpoint 2: 0.0, Holding time: 3 seconds.

[0104] Images were captured using a Nikon camera (Nikon D800 with AF-Micro NIKKOR 60mm 1:28 GED lens) at a fixed distance of 7.3 inches with an X-Pol filter. Images were captured (i) before applying makeup, (ii) after applying makeup, and (iii) after removing makeup. Images were analyzed using Matlab to calculate the change in LAB value between the baseline and the points after applying makeup and after removing makeup from the center of the applied makeup circle. The makeup removal rate was calculated for each chip and is listed in Table 5 below. It should be noted that comparative samples were experimented with several times, similar to Example 13, and various results are reported below.

[0105] [Table 9]

[0106] As shown in the in vitro measurements for the cleansing efficacy test described above, Example 13 had a score that was statistically equivalent to or better than commercially available silicone-containing cleansers. Example 13 was determined to be the most effective cleansing system.

[0107] Example 5: Further modification of the composition Given that Example 13 was deemed promising, several modifications were made to this formulation, its efficacy was tested, and the effects of these modifications were determined. The results for these modified formulations are described herein.

[0108] Example 13 was prepared by modifying the formula to remove hexyl glycol and glycerol 767. The resulting composition was tested in vitro (using the method described in Example 1) to determine its makeup removal efficacy. The resulting composition was determined to have reduced makeup removal efficacy.

[0109] Example 13 was prepared by increasing the amount of Glycerox767 to 3% by weight of the composition. This modification was found to increase the makeup removal efficacy against foundation, but it was also found to increase the sticky feel and the overall cost of the cleansing composition.

[0110] Example 13 was prepared by adding Tween 20 at a concentration of 0.25%. It was found that the addition of this component increased the formulation stability.

[0111] Example 13 was prepared by modifying it to reduce the total amount of emollients to a level of 3.5%, while still maintaining the emollient ratio described in Example 13. It was found that with this lower overall level of emollients, the resulting modified cleansing composition maintained its efficacy in removing all three makeups tested.

[0112] Example 13 was prepared by adding a 2% dimethicone / trisiloxane level. The resulting modified composition was found to have improved skin feel and increased mascara removal effectiveness.

[0113] Example 13 was prepared by modifying the formula by adding dimethicone at a level of 0.5%. The resulting composition was found to have an improved texture.

[0114] Example 6: Emulsifier Various emulsifiers were tested in the formulation, specifically in Example 13. Example 13 was prepared using the various emulsifiers listed in Table 6 below. The resulting formulation was tested for stability and for makeup removal in vitro and / or in vivo using the in vitro method described in Example 4 and the in vivo method described in Example 1.

[0115] [Table 10]

[0116] Emulsifiers 1A and 1B passed formulation stability tests, provided strong makeup removal, and passed texture evaluations. Emulsifier 2 passed formulation stability tests, but had weaker makeup removal than emulsifier 1 and had the least desirable texture compared to emulsifier 1. Emulsifier 3 showed no stability as the formulation separated slowly. Emulsifier 3 provided strong texture, but its makeup removal was significantly worse than emulsifier 1. Emulsifier 4 failed stability tests as it separated rapidly. Emulsifier 5 failed stability tests as it separated overnight. Emulsifier 6 failed stability tests as it separated rapidly. Emulsifier 7 passed stability tests, and the resulting formulation was considered the most stable. Emulsifier 7 also passed texture tests, but its makeup removal was significantly worse than emulsifier 1. Emulsifier 8 failed stability testing because it separated rapidly. However, although emulsifier 8 passed the skin feel test, it was not as effective as emulsifier 1 in removing makeup. Emulsifier 9 failed stability testing because it separated overnight. Although emulsifier 9 passed the skin feel test, it was not tested for makeup removal due to its lack of stability.

[0117] [Implementation Method] (1) A cleansing composition comprising a fluid composition embedded in a substrate, a. The fluid composition is i. A cleansing blend comprising a first stearic acid ester, a second stearic acid ester, and a branched hydrocarbon, wherein the first stearic acid ester and the second stearic acid ester are different from each other. ii. A blend of sucrose fatty acid esters, iii. Water and, iv. Carbomer interpolymer thickener, Includes, b. A cleansing composition in which the base material includes a nonwoven fabric wiping product. (2) The cleansing composition according to Embodiment 1, wherein the first stearic acid ester, the second stearic acid ester, and the branched hydrocarbon are present in a weight ratio of about 2:2:1. (3) The cleansing composition according to Embodiment 1, wherein the first stearic acid ester comprises isostearate. (4) The cleansing composition according to Embodiment 1, wherein the first stearic acid ester comprises isopropyl isostearate. (5) The cleansing composition according to Embodiment 1, wherein the second stearic acid ester comprises decyl isostearate.

[0118] (6) The cleansing composition according to Embodiment 1, wherein the second stearic acid ester comprises decyl highly monobranched isostearate. (7) The cleansing composition according to Embodiment 1, wherein the branched hydrocarbon comprises isohexadecane. (8) The cleansing composition according to Embodiment 1, wherein the first stearic acid ester is present in an amount of about 1.0% to about 3.0% by weight of the fluid composition, the second stearic acid ester is present in an amount of about 1.0% to about 3.0% by weight of the fluid composition, and the branched hydrocarbon is present in an amount of about 0.5% to about 1.5% by weight of the fluid composition. (9) The cleansing composition according to Embodiment 1, wherein the carbomer interpolymer thickener comprises an acrylate / C10-C30 alkyl acrylate crosspolymer. (10) The cleansing composition according to Embodiment 1, wherein the thickening agent is present in an amount of about 0.12% to about 0.18% by weight of the fluid composition.

[0119] (11) The cleansing composition according to Embodiment 1, wherein the blend of sucrose fatty acid esters is present in an amount totaling about 0.5% to about 1.25% by weight of the fluid composition. (12) The cleansing composition according to Embodiment 1, wherein the blend of sucrose fatty acid esters is present in a total amount of about 0.5% to about 1.25% by weight of the fluid composition. (13) The cleansing composition according to Embodiment 1, wherein the blend of sucrose fatty acid esters is coconut fatty acid sucrose. (14) The cleansing composition according to Embodiment 1, wherein the fluid composition further comprises glycol. (15) The cleansing composition according to Embodiment 14, wherein the glycol is hexylene glycol.

[0120] (16) The cleansing composition according to Embodiment 14, wherein the glycol is present in an amount of about 1.0% to about 2.0% by weight of the fluid composition. (17) The cleansing composition according to Embodiment 1, wherein the fluid composition further comprises an emulsifier. (18) The cleansing composition according to Embodiment 1, wherein the emulsifier is present in an amount of about 0.75% to about 2.5% by weight of the fluid composition. (19) The cleansing composition according to Embodiment 1, wherein the emulsifier comprises PEG-6 caprylic acid / capric acid glyceride. (20) A cleansing composition comprising a fluid composition embedded in a substrate, a. The fluid composition is i. A cleansing blend comprising a first stearic acid ester present in an amount of about 1.0% to about 3.0% by weight of the fluid composition, a second stearic acid ester 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 stearic acid ester and the second stearic acid ester are different from each other. ii. A blend of sucrose fatty acid esters, iii. Water and, iv. Carbomer interpolymer thickener, Includes, b. A cleansing composition in which the base material includes a nonwoven fabric wiping product.

[0121] (21) A method for removing cosmetics from a user's skin, a. A step of bringing the surface of the skin into contact with a cleansing composition containing a fluid composition embedded in a substrate, i. The fluid composition is 1. A cleansing blend comprising a first stearic acid ester, a second stearic acid ester, and a branched hydrocarbon, wherein the first stearic acid ester and the second stearic acid ester are different from each other. 2. A blend of sucrose fatty acid esters, 3. Water and, 4. Carbomer interpolymer thickener, Includes, ii. The process includes a base material that includes a nonwoven fabric wiping product, b. A method comprising the step of rubbing the surface of the skin with the substrate to remove the cosmetic from the surface of the skin. (22) The method according to Embodiment 21, wherein the cosmetic is selected from the group consisting of mascara, foundation, eyeliner, and lipstick.

Claims

1. A fluid composition for cleansing, i. A cleansing blend comprising isopropyl isostearate present in an amount of 1.0% to 3.0% by weight of the fluid composition, decyl isostearate present in an amount of 1.0% to 3.0% by weight of the fluid composition, and isohexadecane present in an amount of 0.5% to 1.5% by weight of the fluid composition, ii. Coconut fatty acid sucrose present in an amount of 0.5% to 1.25% by weight of the fluid composition, iii. Water and, iv. Thickening agents and, Includes, A fluid composition wherein the thickening agent is an acrylate / C10-C30 alkyl acrylate crosspolymer.

2. The fluid composition according to claim 1, wherein isopropyl isostearate, decyl isostearate, and isohexadecane are present in a weight ratio of 1.1:1.1:1 to 2:2:

1.

3. The fluid composition according to claim 1, wherein isopropyl isostearate, decyl isostearate, and isohexadecane are present in a weight ratio of 2:2:

1.

4. The fluid composition according to claim 1, wherein an acrylate / C10-C30 alkyl acrylate crosspolymer is present in an amount of 0.12% to 0.18% by weight of the fluid composition.

5. The fluid composition according to any one of claims 1 to 3, wherein the fluid composition further comprises glycol.

6. The fluid composition according to claim 5, wherein the glycol is hexylene glycol.

7. The fluid composition according to claim 5, wherein the glycol is present in an amount of 1.0% to 2.0% by weight of the fluid composition.

8. The fluid composition according to any one of claims 1 to 3, wherein the fluid composition further comprises an emulsifier.

9. The fluid composition according to claim 8, wherein the emulsifier is present in an amount of 0.75% to 2.5% by weight of the fluid composition.

10. The fluid composition according to claim 8, wherein the emulsifier comprises PEG-6 caprylic acid / capric acid glyceride.

11. A fluid composition according to any one of claims 1 to 10 for removing cosmetics from a user's skin.

12. The fluid composition according to claim 11 for removing the cosmetic using a substrate containing the fluid composition.

13. A method for removing cosmetics from a user's skin, a. A step of bringing the surface of the skin into contact with a substrate containing the fluid composition according to any one of claims 1 to 12, b. A method comprising the step of rubbing the surface of the skin with the substrate to remove the cosmetic from the surface of the skin.

14. The method according to claim 13, wherein the cosmetic is selected from the group consisting of mascara, foundation, eyeliner, and lipstick.

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