Composition for preparing a micellar emulsion and a transparent gel

Abstract

This invention discloses compositions for preparing micellar emulsions or transparent gels, comprising: a surfactant, said surfactant being a polyethylene glycol ether of dehydrated sorbitol fatty acid esters, glycerol fatty acid esters, and glycerol fatty acid esters in a mass ratio of 1:0.8-1.2:5.0-7.6; or a polyethylene glycol ether of dehydrated sorbitol sesquifatty acid esters and glycerol fatty acid esters in a mass ratio of 1:0.8-1.2; a co-surfactant selected from aliphatic alcohols having short carbon chains; and an oil selected from ester oils. This invention also provides micellar emulsions or transparent gels comprising said composition and water.

Description

Technical Field

[0001] This invention relates to compositions for preparing micelle emulsions and transparent gels, and micelle emulsions and transparent gels based on the compositions. Background Technology

[0002] Currently available makeup removers can be categorized into two types: water-soluble preparations, such as regular cleansing gels and micellar water, and oil-soluble preparations, such as regular cleansing oils and cleansing balms. Water-soluble preparations are insufficient for removing oil-based cosmetics (such as long-lasting mascara, foundation, matte lipstick, etc.). Oil-soluble preparations have excellent cleansing power, but this is only effective when applied to dry skin, as water will emulsify in the oil-based makeup remover, causing the continuous phase to become water, thus compromising cleansing ability. This requirement for dry application is inconvenient for consumers. Furthermore, oil-soluble makeup removers are generally more expensive due to the large amount of oil and the small amount of water used. Additionally, regular cleansing oils often drip after application, causing inconvenience and an unpleasant user experience. In conclusion, the next generation of makeup removers should first effectively cleanse oil-based cosmetics on both dry and moist skin, secondly, reduce costs, and thirdly, avoid dripping during use.

[0003] Micellar emulsions (also known as microemulsions) are typically composed of oil, water, surfactants, and co-surfactants. They are transparent, thermodynamically stable, and miscible with a certain amount of water or oil. The addition of co-surfactants contributes to the ultra-low surface tension and flexibility of the interfacial film, thus ensuring more effective dissolution of cosmetics. Due to these properties, micellar emulsions are well-suited for use as next-generation makeup removers. First, their miscibility with water or oil allows them to dissolve oil-based cosmetics on moist skin. Second, their water resistance allows for the addition of water to the final formulation, reducing formulation costs. Third, their thermodynamic stability eliminates concerns about product stability during the shelf life.

[0004] JP2005194249 discloses a cleansing composition containing a nonionic surfactant (HLB 6-14) and an oily component, which exhibits excellent detergency and clarity even when mixed with a certain amount of water. However, the final formulation contains less than 5% by weight of water, meaning it is costly to formulate and leaves an unpleasant user experience for consumers with oily skin. Furthermore, the cleansing oil drips during use. The same problem occurs with the formulation disclosed in WO2006003941, which relates to an oily cosmetic cleanser composed of a polyol fatty acid ester, another nonionic surfactant, and an oil.

[0005] EP1433476 discloses a skin cleansing composition comprising an oil, a hydrophilic nonionic surfactant, a lipophilic amphiphilic compound, a water-soluble solvent, and water, exhibiting a bicontinuous microemulsion structure and ensuring strong detergency for cosmetics. However, the disclosed formulations are all dilute liquids, which can lead to dripping and thus compromise the user experience. Furthermore, based on the disclosed embodiments, it is generally necessary to add more than 25% by weight of solvent (ethanol in most of the listed cases) to ensure transparency, water resistance, and strong detergency. Excessive use of ethanol, etc., may irritate the skin.

[0006] JP2007112746 discloses a cosmetic cleansing aerosol foam composed of polyoxyethylene glycerol isostearate, dodecylcyclohexasiloxane, octyl palmitate, propylene glycol, ethanol, and water. It exhibits a bicontinuous microemulsion phase and can remove cosmetics to a certain extent. However, due to the increasing penetration of propylene, it is gradually becoming less popular with consumers. Ethanol has long been questioned in the cosmetic market due to its potential skin irritation. Furthermore, only 20-50% by weight of water can be added to the final formulation, making it difficult to further reduce formulation costs.

[0007] JP2009196909 discloses a cleaning emulsion formulated with water, 1,3-butanediol, 1,2-octanediol, polyoxyethylene oil-based ether, and liquid paraffin. It is a micellar emulsion with strong detergency. However, for the selection of nonionic surfactants, polyoxyethylene oil-based ether is not as mild and safe as polyol fatty acid esters such as polyethylene glycol fatty acid esters, sorbitol fatty acid esters, and alkyl polyglucosides.

[0008] JP2010280643 discloses a bicontinuous microemulsion cleansing composition comprising pentaglyceryl trioleate, decaglyceryl diisostearate, 1,3-butanediol, dipropylene glycol, ethylhexyl palmitate, hydrogenated polyisobutylene, and water. However, this formulation requires 44.2% organic solvent. Such a high solvent content poses a serious risk when used on the skin. Summary of the Invention

[0009] This invention relates to formulations, particularly makeup remover formulations, to achieve good results on both dry and moist skin, preferably with reduced formulation costs and to prevent liquid dripping during use.

[0010] Based on makeup removal tests on long-lasting foundation, the micellar emulsions or gels obtainable from the compositions of this invention exhibit excellent cleansing ability on both dry and moist skin. In some embodiments of this invention, up to 80% by weight of water can be added to the final formulation, which significantly reduces formulation costs. Furthermore, some formulations exhibit a unique liquid-to-gel transition user experience upon application to the skin, preventing the discomfort of oil droplets during use.

[0011] This invention provides a composition for preparing micellar emulsions or transparent gels, comprising:

[0012] The surfactant is preferably a sorbitol fatty acid ester, such as sorbitol caprylate, a glycerol fatty acid ester, such as glycerol oleate, and a polyethylene glycol ether of a glycerol fatty acid ester, such as PEG-7 glycerol cocoate, in a mass ratio of 1:0.8-1.2:5.0-7.6, more preferably 1:0.9-1.1:5.7-6.9, and most preferably 1:1:6.3; or a sorbitol sesquifatty acid ester, such as sorbitol sesquicaprate, and a polyethylene glycol ether of a glycerol fatty acid ester, such as PEG-7 glycerol cocoate, in a mass ratio of 1:0.8-1.2, preferably 1:1;

[0013] Co-surfactant, preferably selected from aliphatic alcohols having short carbon chains, and preferably dipropylene glycol; and

[0014] The oil is preferably selected from ester oils, more preferably from cetyl ethylhexanoate or isoamyl laurate;

[0015] The mass ratio of oil to co-surfactant is 1:4 to 2:1, preferably 1:1; preferably, the weight ratio of the oil phase containing oil and co-surfactant to the surfactant phase is about >0 to 7:4, more preferably about >0 to 6:4, and even more preferably 1:9 to 4:6.

[0016] The composition may be water-free and is therefore anhydrous. This anhydrous composition can be used as a base formulation to prepare aqueous micelle emulsions or transparent gels.

[0017] In this invention, the sorbitol fatty acid esters include, for example, sorbitol C6-C12 fatty acid esters, such as sorbitol caprylate;

[0018] Glycerol fatty acid esters include, for example, glycerol C16-C22 fatty acid esters, such as glyceryl oleate, wherein the fatty acid may be selected from saturated fatty acids, unsaturated fatty acids, or mixtures of saturated and unsaturated fatty acids, particularly fatty acids derived from plants;

[0019] PEG ethers of glycerol fatty acid esters include, for example, PEG ethers of glycerol C8-C14 fatty acid esters, PEG ethers of glycerol C8-C12 fatty acid esters, having 5-10, for example, 6-8 ethylene oxide units, such as PEG-7 glycerol cocoate; and

[0020] Sorbitol sesquifatty acid esters, including, for example, sorbitol sesqui-C6-C12 fatty acid esters, such as sorbitol sesquioctanoate.

[0021] In this invention, the term "oil phase" includes oil and co-surfactant in the composition. In addition to oil and co-surfactant, the oil phase may also include other oil-soluble components.

[0022] In this invention, the term "surfactant phase" refers to the surfactant in the composition. The surfactant phase can be a single surfactant or more than one surfactant (or a blend of surfactants) in the composition. Therefore, the surfactant phase does not contain other components that are not surfactants. It should be understood that the "surfactant phase" is not necessarily the actual physical phase in the final composition or formulation.

[0023] In some embodiments, the composition for preparing micelle emulsions or transparent gels comprises:

[0024] The surfactant is preferably sorbitol caprylate, glyceryl oleate and PEG-7 glyceryl cocoate in a mass ratio of 1:1:6.3; or sorbitol sesquioclate and PEG-7 glyceryl cocoate in a mass ratio of 1:1.

[0025] Co-surfactant, preferably selected from aliphatic alcohols having short carbon chains, and preferably dipropylene glycol; and

[0026] The oil is preferably selected from ester oils, more preferably from cetyl ethylhexanoate or isoamyl laurate;

[0027] The mass ratio of oil to co-surfactant is 1:4 to 2:1, preferably 1:1; preferably, the weight ratio of the oil phase containing oil and co-surfactant to the surfactant phase is about >0 to 6:4, more preferably 1:9 to 4:6.

[0028] Based on the total weight of the composition, the composition may further contain up to 10% by weight, preferably up to 20%, 30%, 40%, 50%, 60%, 70%, 80%, or more, of water.

[0029] When the composition is further added or diluted with an appropriate amount of water, it can become a micellar emulsion or a transparent gel, which is excellent for applications such as makeup removal. Therefore, by diluting with water, those skilled in the art can readily use the composition to prepare a micellar emulsion or a transparent gel, or consumers can readily use the composition to obtain a micellar emulsion or a transparent gel. In some embodiments, when diluted with water, the composition can initially become a micellar emulsion, and with increasing amounts of water added, the micellar emulsion can transform into a transparent gel.

[0030] The composition of the present invention can contain a wide range of water contents. This means that the composition is highly water-resistant and performs well in wet applications, such as removing moisturizing cosmetics from the skin. Furthermore, since the water content in the composition can be very high, for example, up to 10% by weight of the total weight of the composition, preferably up to 20%, 30%, 40%, 50%, 60%, 70%, 80%, or higher, the formulation cost can be significantly reduced when the composition of the present invention is used as a formulation in the form of a micellar emulsion or a transparent gel.

[0031] Those skilled in the art can readily prepare micellar emulsions or transparent gels based on the compositions of the present invention, for example, by simply diluting with water or drawing a pseudo-ternary phase diagram. Based on the pseudo-ternary phase diagram of the selected components, formulations of the micellar emulsions and gels of the present invention can be readily prepared, wherein the gel will become a micellar emulsion.

[0032] The present invention also provides micellar emulsions or transparent gels comprising: the composition of the present invention and water.

[0033] The present invention also provides a micellar emulsion comprising:

[0034] The surfactant is preferably a sorbitol fatty acid ester, such as sorbitol caprylate, a glycerol fatty acid ester, such as glycerol oleate, and a polyethylene glycol ether of a glycerol fatty acid ester, such as PEG-7 glycerol cocoate, in a mass ratio of 1:0.8-1.2:5.0-7.6, more preferably 1:0.9-1.1:5.7-6.9, and most preferably 1:1:6.3; or a sorbitol sesquifatty acid ester, such as sorbitol sesquicaprate, and a polyethylene glycol ether of a glycerol fatty acid ester, such as PEG-7 glycerol cocoate, in a mass ratio of 1:0.8-1.2, preferably 1:1;

[0035] Co-surfactant, preferably selected from aliphatic alcohols having short carbon chains, and preferably dipropylene glycol; and

[0036] The oil, preferably selected from ester oils, more preferably cetyl ethylhexanoate or isoamyl laurate; and

[0037] water;

[0038] The mass ratio of oil to co-surfactant is 1:4 to 2:1, preferably 1:1; preferably, the weight ratio of the oil phase containing oil and co-surfactant to the surfactant phase is about >0 to 7:4, more preferably about >0 to 6:4, and even more preferably 1:9 to 4:6.

[0039] The present invention also provides a micellar emulsion comprising:

[0040] The surfactant is preferably sorbitol caprylate, glyceryl oleate and PEG-7 glyceryl cocoate in a mass ratio of 1:1:6.3, or sorbitol sesquioclate and PEG-7 glyceryl cocoate in a mass ratio of 1:1.

[0041] The co-surfactant is preferably selected from aliphatic alcohols having short carbon chains, and more preferably dipropylene glycol.

[0042] The oil, preferably selected from ester oils, is preferably cetyl ethylhexanoate or isoamyl laurate; and

[0043] water;

[0044] The mass ratio of oil to co-surfactant is 1:4 to 2:1, preferably 1:1.

[0045] In some implementations, the mass ratio of the oil phase to the surfactant phase, which includes oil and co-surfactant, is >0 to 6:4.

[0046] The amount of water is typically >0% to 80% by weight, depending on the total weight of the micelle emulsion.

[0047] The micelle emulsion is typically transparent.

[0048] In some embodiments, when the mass ratio of oil to co-surfactant is 1:1, and when the weight ratio of the oil phase to the surfactant phase is from >0 to ≤6:4, the surfactant phase consists of dehydrated sorbitan octanoate, glyceryl oleate, and PEG-7 glyceryl cocoate in a mass ratio of 1:1:6.3, and when the composition further contains a suitable amount of water, a micellar emulsion can be obtained. Depending on the specific composition, the amount of water can range from >0% by weight to up to 80% by weight based on the total weight of the final composition.

[0049] In some embodiments, in the micelle emulsion, the mass ratio of oil to co-surfactant is 1:1, and the mass ratio of oil phase to surfactant phase is >0 to <3:7, said surfactant phase consisting of dehydrated sorbitan caprylate, glyceryl oleate and PEG-7 glyceryl cocoate in a mass ratio of 1:1:6.3, and said micelle emulsion contains a suitable amount of water, based on the total weight of said micelle emulsion, for example, containing about >0% to 30% by weight of water.

[0050] In some embodiments, in the micelle emulsion, the mass ratio of oil to co-surfactant is 1:1, and the mass ratio of oil phase to surfactant phase is ≥3:7 to <4:6, said surfactant phase consisting of dehydrated sorbitan caprylate, glyceryl oleate and PEG-7 glyceryl cocoate in a mass ratio of 1:1:6.3, and said micelle emulsion contains a suitable amount of water, based on the total weight of said micelle emulsion, for example containing about >0% to 40% by weight of water.

[0051] In some embodiments, in the micelle emulsion, the mass ratio of oil to co-surfactant is 1:1, and the mass ratio of oil phase to surfactant phase is ≥4:6 to <5:5, said surfactant phase consisting of dehydrated sorbitan caprylate, glyceryl oleate and PEG-7 glyceryl cocoate in a mass ratio of 1:1:6.3, and said micelle emulsion contains a suitable amount of water, based on the total weight of said micelle emulsion, for example, about 30% to 40% by weight of water.

[0052] In some embodiments, in the micelle emulsion, the mass ratio of oil to co-surfactant is 1:1, and the mass ratio of oil phase to surfactant phase is ≥5:5 to <6:4, said surfactant phase consisting of dehydrated sorbitan octanoate, glyceryl oleate and PEG-7 glyceryl cocoate in a mass ratio of 1:1:6.3, and said micelle emulsion contains a suitable amount of water, based on the total weight of said micelle emulsion, for example, containing 60% by weight of water.

[0053] In some embodiments, in the micelle emulsion, the oil to co-surfactant mass ratio is 1:1, and the oil phase to surfactant phase mass ratio is 6:4, said surfactant phase consisting of dehydrated sorbitan caprylate, glyceryl oleate and PEG-7 glyceryl cocoate in a mass ratio of 1:1:6.3, and said micelle emulsion contains a suitable amount of water, based on the total weight of said micelle emulsion, for example, about 60% to 80% by weight of water.

[0054] In some embodiments, a micellar emulsion can be obtained when the mass ratio of oil to co-surfactant is 1:1, the weight ratio of oil phase to surfactant phase is ≥1:9 to <5:5, and the composition further contains an appropriate amount of water, wherein the surfactant phase consists of dehydrated sorbitol sesquioctanoate and PEG-7 glyceryl cocoate in a mass ratio of 1:1. Depending on the specific composition, the amount of water can range from >0% by weight to a maximum of 40% by weight based on the total weight of the final composition.

[0055] In some embodiments, in the micelle emulsion, the mass ratio of oil to co-surfactant is 1:1, and the weight ratio of oil phase to surfactant phase is ≥1:9 to <2:8, said surfactant phase consisting of dehydrated sorbitol sesquioctanoate and PEG-7 glyceryl cocoate in a mass ratio of 1:1, and said micelle emulsion contains a suitable amount of water, based on the total weight of said micelle emulsion, for example, containing about >0% to 10% by weight of water.

[0056] In some embodiments, in the micelle emulsion, the mass ratio of oil to co-surfactant is 1:1, and the weight ratio of oil phase to surfactant phase is ≥2:8 to <3:7, said surfactant phase consisting of dehydrated sorbitol sesquioctanoate and PEG-7 glyceryl cocoate in a mass ratio of 1:1, and said micelle emulsion contains a suitable amount of water, based on the total weight of said micelle emulsion, for example, containing about >0% to 20% by weight of water.

[0057] In some embodiments, in the micelle emulsion, the oil to co-surfactant mass ratio is 1:1, and the oil phase to surfactant phase weight ratio is ≥3:7 to <4:6, the surfactant phase consisting of dehydrated sorbitol sesquioctanoate and PEG-7 glyceryl cocoate in a mass ratio of 1:1, and the micelle emulsion contains a suitable amount of water, based on the total weight of the micelle emulsion, for example, containing about >0% to 30% by weight of water.

[0058] In some embodiments, in the micelle emulsion, the mass ratio of oil to co-surfactant is 1:1, and the weight ratio of oil phase to surfactant phase is ≥4:6 to <5:5, the surfactant phase consisting of dehydrated sorbitol sesquioctanoate and PEG-7 glyceryl cocoate in a mass ratio of 1:1, and the micelle emulsion contains a suitable amount of water, based on the total weight of the micelle emulsion, for example, 40% by weight of water.

[0059] In some embodiments, the micelle emulsion contains an oil to co-surfactant mass ratio of 1:1, and the surfactant phase consists of dehydrated sorbitan caprylate, glyceryl oleate, and PEG-7 glyceryl cocoate in a mass ratio of 1:1:6.3, with an oil phase to surfactant phase mass ratio >0 to 3:7, and contains >0% to 30% water based on the total weight of the micelle emulsion. When additional water is added to the micelle emulsion, it transforms into a gel. This phase transition provides users with a unique user experience.

[0060] The present invention also provides a transparent gel comprising:

[0061] The surfactant is preferably a sorbitol fatty acid ester, such as sorbitol caprylate, a glycerol fatty acid ester, such as glycerol oleate, and a polyethylene glycol ether of a glycerol fatty acid ester, such as PEG-7 glycerol cocoate, in a mass ratio of 1:0.8-1.2:5.0-7.6, more preferably 1:0.9-1.1:5.7-6.9, and most preferably 1:1:6.3;

[0062] Co-surfactant, preferably selected from aliphatic alcohols having short carbon chains, and preferably dipropylene glycol; and

[0063] The oil, preferably selected from ester oils, more preferably cetyl ethylhexanoate or isoamyl laurate; and

[0064] water;

[0065] The mass ratio of oil to co-surfactant is preferably 1:1; preferably, the weight ratio of the oil phase containing oil and co-surfactant to the surfactant phase is about >0 to ≤3:7.

[0066] The present invention also provides a transparent gel comprising:

[0067] The surfactant is preferably sorbitol caprylate, glyceryl oleate and PEG-7 glyceryl cocoate, in a mass ratio of 1:1:6.3;

[0068] The co-surfactant is preferably selected from aliphatic alcohols having short carbon chains, and more preferably dipropylene glycol.

[0069] The oil, preferably selected from ester oils, is preferably cetyl ethylhexanoate or isoamyl laurate; and

[0070] water;

[0071] The mass ratio of oil to co-surfactant is 1:1;

[0072] The mass ratio of the oil phase to the surfactant phase, which includes oil and co-surfactant, is >0 to ≤3:7.

[0073] The amount of water is typically 30% to 80% by weight, depending on the total weight of the gel.

[0074] In some embodiments, a gel can be obtained when the mass ratio of oil to co-surfactant is 1:1, the mass ratio of oil phase to surfactant phase is >0 to ≤3:7, and the composition also contains a suitable amount of water. Depending on the specific composition, the amount of water can range from about 30% by weight to up to 80% by weight based on the total weight of the final composition.

[0075] In some embodiments, the transparent gel contains an oil to co-surfactant mass ratio of 1:1, an oil phase to surfactant phase mass ratio of >0 to <1:9, and the transparent gel contains a suitable amount of water, based on the total weight of the transparent gel, for example, about 30% to 50% by weight of water.

[0076] In some embodiments, the transparent gel contains an oil to co-surfactant mass ratio of 1:1, an oil phase to surfactant phase mass ratio of ≥1:9 to ≤2:8, and the transparent gel contains a suitable amount of water, based on the total weight of the transparent gel, for example, about 30% to 80% by weight of water.

[0077] In some embodiments, the transparent gel contains an oil to co-surfactant mass ratio of 1:1, an oil phase to surfactant phase mass ratio of ≥2:8 to ≤3:7, and the transparent gel contains a suitable amount of water, based on the total weight of the transparent gel, for example, about 40% to 70% by weight of water.

[0078] Examples of surfactants include dehydrated sorbitol sesquioctanoate (commercially available from Evonik Industries AG, Germany). Soft SC MB) and PEG-7 glyceryl cocoate (available commercially from Evonik Industries AG) A 1:1 (mass ratio) mixture of GC, sorbitan caprylate, and glyceryl oleate (available from Evonik Industries AG). Remo 95MB and PEG-7 glyceryl cocoate (available from Evonik Industries AG) A mixture of GC in a 1:1:6.3 (mass ratio).

[0079] PEG-7 glyceryl cocoate is a polyethylene glycol (PEG) ether of glyceryl cocoate, in which 7 units of ethylene oxide are added to glyceryl cocoate.

[0080] For co-surfactants, aliphatic alcohols (C2-C6 aliphatic alcohols) with short carbon chains are preferred. Examples include ethanol, dipropylene glycol, and butylene glycol. Dipropylene glycol is particularly preferred because it has low toxicity, low irritation, and low skin sensitization.

[0081] For oils, ester oils such as cetyl ethylhexanoate (available commercially from Evonik Industries AG) are suitable. CO), isoamyl laurate (available from Evonik Industries AG) Sensolv MB and other oils are suitable candidates. A combination of ester oils with other types of hydrocarbon oils or vegetable oils can also be used, provided the polarity of the final mixture does not change significantly. Hydrocarbon oils include liquid petrolatum, isohexadecane, etc. Vegetable oils include vitus vinifera (grape) seed oil, helianthus annuus (sunflower) seed oil, ricinus communis (castor) oil, etc.

[0082] The oil may also be a mixture of ester oil and a small amount of other oils selected from hydrocarbon oils or vegetable oils. If other oils are included, the polarity of the oils should not be significantly altered. For example, the amount of other oils may be less than 2% by weight based on the total weight of the composition.

[0083] In particular, it is also possible to easily formulate makeup remover formulations that transform from liquid to gel during application, thereby preventing oil dripping and greatly improving the user experience.

[0084] For the preparation process, since the formation of micellar emulsions is spontaneous, it is simply a matter of uniformly mixing the surfactant with the oil, then adding the co-surfactant while stirring, and finally adding water and other components and mixing them uniformly, for example by gently stirring at room temperature. All processes can be easily carried out at room temperature.

[0085] The compositions of the present invention can be used in microemulsion or gel applications, such as in cosmetics, especially in makeup removers, oil recovery, pharmaceuticals, food, agrochemicals, detergents, fuels, lubricants, cutting oils and corrosion inhibitors, coatings and textile finishing, environmental remediation and detoxification, microporous media synthesis, biotechnology, analytical applications, liquid membranes, etc.

[0086] The compositions including the microemulsions or gels of the present invention can be used on both dry and moist skin, exhibiting excellent makeup removal performance. The microemulsions or gels of the present invention can effectively cleanse waterproof cosmetics from both wet and dry skin, leaving a refreshing skin feel. Furthermore, for microemulsions or gels, the relatively high water content (up to 80% by weight) significantly reduces formulation costs. The low content of organic solvents also reduces the risk of skin irritation. In addition, the gel state of the gel compositions of the present invention avoids the problem of liquid dripping during use. The phase transition from liquid to gel also provides users with a unique user experience.

[0087] Other advantages of the present invention will be apparent to those skilled in the art upon reading the specification. Invention Details

[0088] The present invention will now be described in detail through the following embodiments. The scope of the present invention should not be limited to the implementation of the embodiments.

[0089] Formulations of makeup remover compositions comprising micellar emulsions and gels were readily prepared by gentle stirring at room temperature. All mixing steps in the examples were performed by mechanical stirring at approximately 300 rpm. Information regarding the composition of the products used in the examples is listed in Table 1. The compositions of the formulations of the examples are listed in Table 2, and the compositions of the formulations of the comparative examples are listed in Table 3.

[0090] In the examples, all percentages are weight percentages based on the total weight of the final formulation.

[0091] Table 1

[0092]

[0093] All products in Table 1 are available from Evonik Industries AG.

[0094] Example 1

[0095] A makeup remover micelle emulsion formulation exhibiting a liquid-to-gel transition was prepared. Under mechanical stirring at approximately 300 rpm, 10.5% by weight of… CO, 12.25% by weight Remo 95MB and 36.75% by weight GC is thoroughly mixed. Then 10.5% by weight of dipropylene glycol is added and mixed thoroughly, followed by 30% by weight of water. The resulting mixture is mechanically stirred until it becomes a clear and uniform micellar emulsion. The final formulation is applied to damp skin and gradually transforms into a gel (entering the gel phase). The final formulation can be easily removed from long-lasting foundation (L'Oréal Paris Revitalift Foundation, available from L'Oréal France SAS, Paris, France) under both wet and dry conditions. Furthermore, this unique liquid-to-gel transition enriches the user experience and prevents oil droplets from falling during the cleansing process.

[0096] Example 2

[0097] A makeup remover gel formulation was prepared. 7.5% by weight of [the product name is missing here, likely a chemical formula] was added under mechanical stirring at approximately 300 rpm. CO, 8.75% by weight Remo 95MB and 26.25% by weight The GC was uniformly mixed, then 7.5 wt% dipropylene glycol was added and mixed uniformly, followed by 50 wt% water. The resulting mixture was mixed until it became a homogeneous gel. The final formulation was a crystalline, transparent gel. Adding 50 wt% water to this formulation significantly reduces its preparation cost.

[0098] Example 3

[0099] A makeup remover formulation with high water resistance was prepared. Under mechanical stirring at approximately 300 rpm, 15% by weight of... CO, 17.5% by weight Remo 95MB and 52.5% by weight The GC was uniformly mixed, and then 15% by weight of dipropylene glycol was added. The mixture was mixed until it became a clear and homogeneous micelle emulsion. The final formulation could withstand the addition of ≤70% by weight of water and was transparent in appearance.

[0100] Example 4

[0101] A makeup remover micelle emulsion formulation with high water resistance was prepared. Under mechanical stirring at approximately 300 rpm, 17.5% by weight of... CO, 8.75% by weight Remo 95MB and 26.25% by weight The GC was uniformly mixed, then 17.5 wt% dipropylene glycol was added and mixed uniformly, followed by 30 wt% water. The resulting mixture was mixed until it became a clear and homogeneous micelle emulsion. The final formulation could withstand the addition of ≤60 wt% water in total and had a clear appearance.

[0102] Example 5

[0103] A makeup remover micelle emulsion formulation with high water resistance was prepared. Under mechanical stirring at approximately 300 rpm, 14% by weight of... CO, 21% by weight Soft SC MB and 21% by weight GC was uniformly mixed, then 14% by weight of anhydrous ethanol was added and mixed uniformly, followed by 30% by weight of water. The resulting mixture was mixed until it became a clear and homogeneous micelle emulsion. The final formulation could withstand the addition of ≤40% by weight of water in total and had a clear appearance.

[0104] Example 6

[0105] A makeup remover micelle emulsion formulation with high water resistance was prepared. Under mechanical stirring at approximately 300 rpm, 14% by weight of... sensolv MB, 10.5% by weight Remo 95MB and 31.5% by weight The GC was uniformly mixed, then 14 wt% dipropylene glycol was added and mixed uniformly, followed by 30 wt% water. The resulting mixture was mixed until it became a clear and homogeneous micelle emulsion. The final formulation could withstand the addition of ≤40 wt% water in total and was transparent in appearance.

[0106] Example 7

[0107] Under mechanical stirring at approximately 300 rpm, 20% by weight of CO, 30% by weight of Soft SCMB, 30% by weight of GC is mixed uniformly. Then 20 wt% of 1,3-butanediol is added and mixed uniformly. After adding 5 wt% to 10 wt% of water, the final formulation will become a clear and uniform micelle emulsion.

[0108] Comparative Example 1

[0109] Under mechanical stirring at approximately 300 rpm, 15% by weight of CO, 52.5% by weight Remo 95MB, 17.5% by weight Solve 90MB and mix thoroughly. Then add 15% by weight of dipropylene glycol and mix thoroughly. The final formulation is slightly turbid and remains turbid even after adding >0% to ≤90% by weight of water, meaning it is not water-tolerant.

[0110] Comparative Example 2

[0111] Under mechanical stirring at approximately 300 rpm, 45% by weight of CO, 5% by weight GC, 5% by weight Soft SC MB was mixed evenly. Then 45% by weight of dipropylene glycol was added and mixed evenly. The final formulation was slightly turbid and remained turbid even after the addition of >0% to ≤90% by weight of water, meaning it was not water-tolerant.

[0112] Comparative Example 3

[0113] Under mechanical stirring at approximately 300 rpm, 45% by weight of CO, 7.5% by weight GC, 2.5% by weight Remo 95 was mixed thoroughly. Then 45 wt% dipropylene glycol was added and mixed thoroughly. The final formulation was slightly turbid and remained turbid even after the addition of >0 wt% to ≤90 wt% water, meaning it is not water-tolerant.

[0114] Makeup removal ability assessment

[0115] The makeup removal ability of the formulation obtained in Example 1 for L'Oréal Paris RevitaLift foundation was evaluated using the following methods, and the makeup removal ability of other formulations obtained in Examples 2-7 can be easily predicted due to the same basic formulation structure.

[0116] The frosted surface of polymethyl methacrylate (PMMA) plates (5cm×5cm×2mm, 2μm frosted surface) was used to simulate human skin, and two plates were used for one sample.

[0117] First, the color values ​​(ΔL, Δa, and Δb) were measured three times at the center of an empty PMMA plate using a spectrophotometer (commercially available from Konica Minolta, Inc., CM-700d). Then, 0.025 ml of foundation was applied to each plate using a pipette and spread evenly with a finger cot at a uniform speed for 1 minute. The plates were placed in an oven at 25°C and dried for 1 hour. After drying, the color values ​​of the coated plates were measured three times again at the same location. To simulate wet skin, 0.1 g of water was placed on each plate and spread evenly with a finger cot at a uniform speed for 10 seconds. To simulate dry skin, this step should be ignored. Then, 0.2 g of test sample was quickly applied to each plate and spread evenly with a finger cot at a uniform speed for 20 seconds. The plates were rinsed with tap water at 37°C for 30 seconds, then rubbed with a finger cot during rinsing. A dry paper towel was used to absorb the excess water. The color values ​​of the plates at the same location were measured three times.

[0118] To calculate makeup removal capacity, the ΔE data is first calculated using the average values ​​of ΔL, Δa, and Δb measurements from an empty PMMA plate, a PMMA plate with makeup (foundation), and a cleansed PMMA plate, and then calculated using the following equation:

[0119]

[0120] Then, the makeup removal rate is calculated using the following equation.

[0121]

[0122] The formulation obtained in Example 1 showed a makeup removal percentage of 94% relative to the tested long-lasting foundation under humid conditions and 95% under dry conditions, demonstrating excellent makeup removal ability.

[0123] Table 2 Composition of the formulations in the examples

[0124]

[0125] Table 3 Composition of formulations in comparative examples

[0126]

[0127] Unless otherwise specified, terms such as “including” used herein are open-ended terms meaning “at least including”.

[0128] All references, tests, standards, documents, publications, etc., mentioned in this document are incorporated herein by reference. When specifying numerical limits or ranges, endpoints are included. Similarly, all values ​​and subranges within numerical limits or ranges are explicitly included as if explicitly stated.

[0129] The above description is intended to enable those skilled in the art to make and use the invention, and is provided in the context of a particular application and its requirements. Various modifications to the preferred embodiments will be apparent to those skilled in the art, and the general principles defined herein can be applied to other embodiments and applications without departing from the spirit and scope of the invention. Therefore, the invention is not intended to be limited to the embodiments shown, but rather to be consistent with the widest scope of the principles and features disclosed herein. In this regard, in a broad sense, certain embodiments within the invention may not show all the benefits of the invention.

Claims

1. A composition for preparing micelle emulsions or transparent gels, comprising: The surfactant is a polyethylene glycol ether of sorbitol C6-C12 fatty acid ester, glycerol C16-C22 fatty acid ester, and glycerol C8-C14 fatty acid ester having 5-10 ethylene oxide units, in a mass ratio of 1:0.8-1.2:5.0-7.6; or a polyethylene glycol ether of sorbitol sesqui-C6-C12 fatty acid ester and glycerol C8-C14 fatty acid ester having 5-10 ethylene oxide units, in a mass ratio of 1:0.8-1.

2. Co-surfactant, wherein the co-surfactant is selected from aliphatic alcohols having short carbon chains; and The oil is selected from ester oils; The mass ratio of oil to co-surfactant is 1:4 to 2:1; the weight ratio of the oil phase containing oil and co-surfactant to the surfactant phase is >0 to 6:

4.

2. The composition according to claim 1, wherein the sorbitol C6-C12 fatty acid ester is sorbitol octanoate.

3. The composition according to claim 1, wherein the glycerol C16-C22 fatty acid ester is glycerol oleate.

4. The composition according to claim 1, wherein the polyethylene glycol ether of the glycerol C8-C14 fatty acid ester having 5-10 ethylene oxide units is PEG-7 glycerol cocoate.

5. The composition according to claim 1, wherein the mass ratio of the polyethylene glycol ether of the dehydrated sorbitol C6-C12 fatty acid ester, the glycerol C16-C22 fatty acid ester, and the glycerol C8-C14 fatty acid ester having 5-10 ethylene oxide units is 1:0.9-1.1:5.7-6.

9.

6. The composition according to claim 1, wherein the mass ratio of the polyethylene glycol ether of the dehydrated sorbitol C6-C12 fatty acid ester, the glycerol C16-C22 fatty acid ester, and the glycerol C8-C14 fatty acid ester having 5-10 ethylene oxide units is 1:1:6.

3.

7. The composition according to claim 1, wherein the sorbitol sesquiterpene C6-C12 fatty acid ester is sorbitol sesquioctanoate.

8. The composition according to claim 1, wherein the mass ratio of the polyethylene glycol ether of the dehydrated sorbitol sesquiterctic C6-C12 fatty acid ester and the glycerol C8-C14 fatty acid ester having 5-10 ethylene oxide units is 1:

1.

9. The composition according to claim 1, wherein the co-surfactant is dipropylene glycol.

10. The composition according to claim 1, wherein the oil is cetyl ethylhexanoate or isoamyl laurate.

11. The composition according to claim 1, wherein the mass ratio of oil to co-surfactant is 1:

1.

12. The composition according to claim 1, wherein the weight ratio of the oil phase to the surfactant phase, comprising oil and co-surfactant, is 1:9 to 4:

6.

13. The composition according to any one of claims 1-12, wherein the composition is anhydrous.

14. The composition according to any one of claims 1-12, wherein the composition further comprises up to 10% by weight of water based on the total weight of the composition.

15. The composition of claim 14, wherein the composition further comprises up to 20% by weight of water based on the total weight of the composition.

16. The composition of claim 14, wherein the composition further comprises up to 30% by weight of water based on the total weight of the composition.

17. The composition of claim 14, wherein the composition further comprises up to 40% by weight of water based on the total weight of the composition.

18. The composition of claim 14, wherein the composition further comprises up to 50% by weight water based on the total weight of the composition.

19. The composition of claim 14, wherein the composition further comprises up to 60% by weight water based on the total weight of the composition.

20. The composition of claim 14, wherein the composition further comprises up to 70% by weight water based on the total weight of the composition.

21. The composition of claim 14, wherein the composition further comprises up to 80% by weight water based on the total weight of the composition.

22. A micellar emulsion comprising: The surfactant is a polyethylene glycol ether of sorbitol C6-C12 fatty acid ester, glycerol C16-C22 fatty acid ester, and glycerol C8-C14 fatty acid ester having 5-10 ethylene oxide units, in a mass ratio of 1:0.8-1.2:5.0-7.6; or a polyethylene glycol ether of sorbitol sesqui-C6-C12 fatty acid ester and glycerol C8-C14 fatty acid ester having 5-10 ethylene oxide units, in a mass ratio of 1:0.8-1.

2. Co-surfactant, wherein the co-surfactant is selected from aliphatic alcohols having short carbon chains; and Oils, selected from ester oils; and water; The mass ratio of oil to co-surfactant is 1:4 to 2:1; the weight ratio of the oil phase containing oil and co-surfactant to the surfactant phase is >0 to 6:

4.

23. The micelle emulsion according to claim 22, wherein the sorbitol C6-C12 fatty acid ester is sorbitol caprylate.

24. The micellar emulsion according to claim 22, wherein the glycerol C16-C22 fatty acid ester is glycerol oleate.

25. The micellar emulsion of claim 22, wherein the polyethylene glycol ether of the glycerol C8-C14 fatty acid ester having 5-10 ethylene oxide units is PEG-7 glycerol cocoate.

26. The micelle emulsion according to claim 22, wherein the mass ratio of dehydrated sorbitol C6-C12 fatty acid ester, glycerol C16-C22 fatty acid ester, and polyethylene glycol ether of glycerol C8-C14 fatty acid ester having 5-10 ethylene oxide units is 1:0.9-1.1:5.7-6.

9.

27. The micelle emulsion according to claim 22, wherein the mass ratio of dehydrated sorbitol C6-C12 fatty acid ester, glycerol C16-C22 fatty acid ester, and polyethylene glycol ether of glycerol C8-C14 fatty acid ester having 5-10 ethylene oxide units is 1:1:6.

3.

28. The micelle emulsion according to claim 22, wherein the sorbitol sesquiterpenoid C6-C12 fatty acid ester is sorbitol sesquioctanoate.

29. The micelle emulsion according to claim 22, wherein the mass ratio of the polyethylene glycol ether of the dehydrated sorbitol sesquiterctic C6-C12 fatty acid ester and the glycerol C8-C14 fatty acid ester having 5-10 ethylene oxide units is 1:

1.

30. The micelle emulsion according to claim 22, wherein the co-surfactant is dipropylene glycol.

31. The micellar emulsion according to claim 22, wherein the oil is cetyl ethylhexanoate or isoamyl laurate.

32. The micelle emulsion according to claim 22, wherein the mass ratio of oil to co-surfactant is 1:

1.

33. The micelle emulsion according to claim 22, wherein the weight ratio of the oil phase to the surfactant phase, comprising oil and co-surfactant, is 1:9 to 4:

6.

34. The micelle emulsion according to any one of claims 22-33, wherein the amount of water is >0% to 80% by weight based on the total weight of the micelle emulsion.

35. The micelle emulsion according to any one of claims 22-33, wherein: The mass ratio of oil to co-surfactant is 1:1, and the mass ratio of oil phase to surfactant phase is ≥ 3:7 to < 4:

6. The surfactant phase consists of dehydrated sorbitan octanoate, glyceryl oleate and PEG-7 glyceryl cocoate in a mass ratio of 1:1:6.

3. The amount of water is >0% to 40% by weight based on the total weight of the micelle emulsion.

36. The micelle emulsion according to any one of claims 22-33, wherein: The mass ratio of oil to co-surfactant is 1:1, and the mass ratio of oil phase to surfactant phase is ≥ 4:6 to < 5:

5. The surfactant phase consists of dehydrated sorbitan octanoate, glyceryl oleate and PEG-7 glyceryl cocoate in a mass ratio of 1:1:6.3, and the amount of water is 30% to 40% by weight based on the total weight of the micelle emulsion.

37. The micelle emulsion according to any one of claims 22-33, wherein: The mass ratio of oil to co-surfactant is 1:1, and the mass ratio of oil phase to surfactant phase is 6:

4. The surfactant phase consists of dehydrated sorbitan octanoate, glyceryl oleate and PEG-7 glyceryl cocoate in a mass ratio of 1:1:6.

3. The amount of water is 60% to 80% by weight based on the total weight of the micelle emulsion.

38. A transparent gel comprising: The surfactant is a polyethylene glycol ether of dehydrated sorbitol C6-C12 fatty acid ester, glycerol C16-C22 fatty acid ester, and glycerol C8-C14 fatty acid ester having 5-10 ethylene oxide units, in a mass ratio of 1:0.8-1.2:5.0-7.

6. Co-surfactant, wherein the co-surfactant is selected from aliphatic alcohols having short carbon chains; and Oils, selected from ester oils; and water; The mass ratio of oil to co-surfactant is 1:1; the weight ratio of the oil phase containing oil and co-surfactant to the surfactant phase is >0 to 6:

4.

39. The transparent gel according to claim 38, wherein the sorbitol C6-C12 fatty acid ester is sorbitol caprylate.

40. The transparent gel according to claim 38, wherein the glycerol C16-C22 fatty acid ester is glycerol oleate.

41. The transparent gel according to claim 38, wherein the polyethylene glycol ether of the glycerol C8-C14 fatty acid ester having 5-10 ethylene oxide units is PEG-7 glycerol cocoate.

42. The transparent gel according to claim 38, wherein the mass ratio of the polyethylene glycol ether of the dehydrated sorbitol C6-C12 fatty acid ester, the glycerol C16-C22 fatty acid ester, and the glycerol C8-C14 fatty acid ester having 5-10 ethylene oxide units is 1:0.9-1.1:5.7-6.

9.

43. The transparent gel according to claim 38, wherein the mass ratio of the dehydrated sorbitol C6-C12 fatty acid ester, the glycerol C16-C22 fatty acid ester, and the polyethylene glycol ether of the glycerol C8-C14 fatty acid ester having 5-10 ethylene oxide units is 1:1:6.

3.

44. The transparent gel according to claim 38, wherein the co-surfactant is dipropylene glycol.

45. The transparent gel according to claim 38, wherein the oil is cetyl ethylhexanoate or isoamyl laurate.

46. ​​The transparent gel according to claim 38, wherein the weight ratio of the oil phase to the surfactant phase comprising oil and co-surfactant is >0 to ≤3:

7.

47. The transparent gel according to any one of claims 38-46, wherein the amount of water is from 30% to 70% by weight based on the total weight of the gel.

48. The transparent gel according to any one of claims 38-46, wherein: The mass ratio of the oil phase to the surfactant phase is >0 to <1:9, and the amount of water is 30% to 50% by weight based on the total weight of the gel.

49. The transparent gel according to any one of claims 38-46, wherein: The mass ratio of the oil phase to the surfactant phase is ≥1:9 to ≤2:8, and the amount of water is 30% to 80% by weight based on the total weight of the gel.

50. The transparent gel according to any one of claims 38-46, wherein: The mass ratio of the oil phase to the surfactant phase is >2:8 to ≤3:7, and the amount of water is 40% to 70% by weight based on the total weight of the gel.

51. Use of the composition according to any one of claims 1-21 in the preparation of micelle emulsions or transparent gels.

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