Hydratable cosmetic composition

Abstract

The present invention relates to cosmetic composition precursors that are rapidly hydratable and facilitate the creation of personalized end products. Accordingly, the present invention relates to cosmetic composition precursors having a fatty acid, an inorganic base, and a high HLB surfactant, and methods of using the precursors in the creation of end products. The present invention also relates to end use compositions made from the hydratable cosmetic composition precursors of the present invention.

Description

Technical Field

[0001] This invention belongs to the field of personal care compositions. More specifically, this invention relates to precursors for customized, rapidly hydrating cosmetic compositions comprising partially neutralized fatty acids and high-HLB surfactants. This invention also relates to end-use compositions made from the hydrating compositions of this invention. Background Technology

[0002] Traditionally, cosmetic compositions have been categorized for specific beneficial platforms, including dry skin, reactive skin, acne, and anti-aging. However, in recent years, as consumers have become increasingly aware that individual skin is unique compared to others, the need and demand for customized personal care products has grown. Many of these customized cosmetic products are either formulated specifically for the consumer's stated needs or can be further customized by the consumer after a base product has been formulated.

[0003] Customizing cosmetic compositions for individual consumers presents a variety of challenges. Particularly noteworthy obstacles include the additional amount of time required to create a personalized product from start to finish, and the potential waste resulting from the creation of bespoke products, as such specific formulations theoretically cater to the unique skin needs of a single consumer.

[0004] Therefore, the inventors have recognized the need to develop cosmetic composition precursors that are rapidly hydrated and facilitate the creation of personalized end products. This allows consumers to create precise quantities of product they expect to use within a given timeframe and to precisely customize the base product to their liking at any preferred location. Furthermore, the cosmetic composition precursor is sustainable and environmentally friendly because it can be used as a refill, transported without added water, and packaged with reduced plastic use. This invention relates to cosmetic composition precursors having partially neutralized fatty acids and high-HLB surfactants, and end-use compositions prepared from these cosmetic composition precursors.

[0005] Additional Information

[0006] The results of our efforts in creating cosmetic compositions have been made public.

[0007] U.S. Patent No. 4,992,477 relates to a skin moisturizing composition and a method for preparing the same, the composition comprising an emulsion formed by combining an oil phase comprising an oil and a nonionic, high-HLB surfactant with an aqueous phase, a thickener, and water.

[0008] U.S. Patent No. 5,658,575 discloses a cosmetic or dermatological composition comprising an oil-in-water emulsion containing oily microspheres coated with a layered liquid crystal coating.

[0009] U.S. Patent No. 8,299,162 reports a powder containing a water-soluble wax that, when mixed with water, is effective in cold-processing creams, lotions, or gels.

[0010] PCT application WO 2005 / 007242 relates to solvated nonionic surfactants and fatty acids, if desired, in combination with alkoxylated alkanolamides and water, to create liquid and flowable compositions.

[0011] PCT application WO 2008 / 006697 discloses a method for measuring and selecting compositions having enhanced post-wash hydration values.

[0012] Japanese Patent Application Publication JP 2017 / 110139 discloses a framed transparent solid soap containing fatty acid salts, myristicin, and hydroxypropyl methylcellulose.

[0013] The above additional information does not describe the combination of partially neutralized fatty acids with high-HLB surfactants, which provides for the preparation of precursors for hydration of cosmetic compositions or the rehydration of precursors for cosmetic compositions to form end-use compositions. Summary of the Invention

[0014] The inventors have developed a cosmetic composition precursor that, unexpectedly, can be readily hydrated with the addition of water, a water-miscible solvent, or a mixture thereof for use in customizable cosmetic end-use formulations.

[0015] Therefore, in a first aspect, the present invention relates to a cosmetic composition precursor; comprising:

[0016] (a)C 10-22 fatty acids; and

[0017] (b) High HLB surfactants,

[0018] The HLB value is at least 8, and the C 10-22 The fatty acid is partially neutralized by at least 10%, and the ratio of the fatty acid to the high HLB surfactant is between 10:90 and 90:10; wherein the fatty acid includes lauric acid, myristic acid, palmitic acid, stearic acid, isostearic acid, hydroxystearic acid, oleic acid, linoleic acid, ricinoleic acid, arachidic acid, benzyl acid, erucic acid, or mixtures thereof, and wherein the precursor contains 30 to 70% by weight of the fatty acid.

[0019] In a second aspect, the present invention relates to a method for hydrating a cosmetic composition precursor of the first aspect by adding water, a water-miscible solvent, or a mixture thereof, for use in a customizable cosmetic end-use formulation.

[0020] In a third aspect, the present invention relates to end-use cosmetic compositions prepared from precursor compositions as defined in the first aspect, wherein further customization is achieved by the optional addition of desired ingredients.

[0021] In a fourth aspect, the present invention relates to a method for treating skin to be treated, the method comprising the steps of: preparing an end-use composition comprising a precursor composition as defined in the first aspect, and applying the end-use cosmetic composition to the skin to be treated.

[0022] All other aspects of the invention will become more apparent upon consideration of the following detailed description, data, and embodiments.

[0023] For the avoidance of doubt, the term "comprising" does not mean limited to any of the stated elements, but rather encompasses unspecified elements that are of primary or secondary functional importance. Therefore, the listed steps, elements, or options need not be exhaustive. Whenever the words "including" or "having" are used, such terms mean equivalent to "comprising" as defined above. "All scope" is intended to include all those scopes contained herein.

[0024] As used herein, the term "skin" includes the skin on the face, neck, chest, back, arms, armpits, buttocks, hands, legs, and scalp. As used herein, a skin-beneficial agent is intended to include a component that (a) improves facial or body characteristics such as skin features upon topical application, (b) is beneficial to said facial or body features, or (c) has both (a) and (b). As used herein, the terms "formulation" and "composition" are intended to refer to the same ready-to-use mixture of ingredients. End-use compositions (preferably aqueous) are compositions for topical application and include creams, lotions, balms, serums, gels, deodorants, antiperspirants, nail treatments, makeup, and moisturizing bars. In a particularly preferred embodiment, the end-use composition of the present invention is a rinse-free composition. As used herein, "substantially free" means containing less than 10% by weight. As used herein, the term "tool" includes mixing blades, hands, implements, scrapers, and mixers. As used herein, “liquid” is intended to mean that the substance is a pumpable and / or flowable, preferably water-continuous composition. As used herein, “reconstitution” refers to the process of converting a solid into a liquid (i.e., a lotion or cream) form by adding water to it. When referring to the phrase “rapid / instant hydration,” the reconstitution time standard used herein is more than 5 seconds, preferably 10 seconds to 3 minutes, and most preferably 10 seconds to 2 minutes. Within the scope of this invention, the phrase “high HLB” is used to refer to a surfactant having an HLB value greater than or equal to 8. “HLB” stands for hydrophilic-lipophilic balance of a surfactant, used to measure the degree to which a surfactant is hydrophilic or lipophilic, and is widely used in the art. As used herein with respect to compositions, the term “no-rinse” refers to a composition that is applied to or rubbed onto the skin and remains on the skin. End-use compositions of the present invention have been developed for applications including non-therapeutic and cosmetic topical application to the skin.

[0025] Except where explicitly stated in the examples or elsewhere, all numerical values ​​representing amounts of material in this specification should be understood to be modified by “about”. Unless otherwise specified, all amounts are based on the total weight of the composition. Detailed Implementation

[0026] The fatty acid compound contained in the cosmetic composition precursor of the present invention is C. 10 -C 22 Fatty acids, preferably C 16 -C 18 Fatty acids, more preferably in a ratio of 3:1 to 1:3, C 16 :C 18Even more preferably, a C ratio of 1:1 to 1:2 16 :C 18 Furthermore, even more preferably, a C ratio of 1:1 to 1:1.5 by weight. 16 :C 18 Fatty acids. Fatty acids include lauric acid, myristic acid, palmitic acid, stearic acid, isostearic acid, hydroxystearic acid, oleic acid, linoleic acid, ricinoleic acid, arachidic acid, benzyl acid, erucic acid, or mixtures thereof. In a preferred embodiment of the invention, the fatty acid used is stearic acid, palmitic acid, or mixtures thereof. Based on the total weight of the cosmetic composition precursor, the composition contains 30 to 70% by weight, preferably 35 to 65% by weight, and most preferably 40 to 60% by weight of fatty acids.

[0027] Conventional buffers or pH adjusters are suitable for inclusion in the cosmetic composition precursors of the present invention for use in C 10 -C 22 Partial neutralization of fatty acids. Such additives include commonly used additives such as inorganic bases (e.g., sodium hydroxide and potassium hydroxide) and organic bases (e.g., triethanolamine and aminomethylpropanol). Within the scope of this invention, both organic and inorganic bases are used as neutralizing agents. Therefore, in a preferred embodiment, inorganic bases, organic bases, or mixtures thereof are used. In a particularly preferred embodiment, inorganic bases, such as sodium hydroxide, potassium hydroxide, or mixtures thereof, are used. The inorganic base partially neutralizes the fatty acid compounds contained in this invention, wherein the degree of neutralization is at least 10%, preferably 20 to 65%, more preferably 25 to 60%, and even more preferably 30 to 55%.

[0028] High-HLB surfactants are present in the precursors of the cosmetic compositions of the present invention. Surfactants suitable for use in the present invention have an HLB value of 8 or greater, preferably 8 to 19, more preferably 8 to 17, and most preferably 8 to 15. In a particularly preferred embodiment, the high-HLB surfactant has an HLB value of 8 to 12. Illustrative examples of suitable high-HLB surfactants include arachidonic acid glucoside, cetearyl glucoside, coco-glucoside, decyl glucoside, PEG-100 stearate, polysorbate 40, polysorbate 20, stearyl ether-21, PEG-40 hydrogenated castor oil, sucrose cocoate, sucrose stearate, or mixtures thereof. Such high-HLB surfactants may be further provided with fatty alcohols and / or additional fatty acids to aid in the layered structure of the end-use composition. Illustrative examples include cetearyl alcohol, cetyl alcohol, stearyl alcohol, isostearyl alcohol, betaine alcohol, stearic acid, palmitic acid, lauric acid, and combinations thereof. In one embodiment of the invention, a blend of arachidyl alcohol, betaine alcohol, and arachidyl glucoside is used as a surfactant, the blend being sourced from the supplier Seppic under the trade name Montanov. TM The product is commercially available (item 202) and is characterized by an HLB value of 8.3. In a particularly preferred embodiment of the invention, a blend of sugar-based cetearyl alcohol and cetearyl glucoside is used as a surfactant. Cetearyl alcohol and cetearyl glucoside are obtained as a blend from the supplier Seppic under the trade name Montanov. TM 68 is commercially available and is characterized by an HLB value of 9.3. The total concentration of the high-HLB surfactant, based on the weight of the cosmetic composition precursor, can be 10 to 70% by weight, preferably 25 to 65% by weight, most preferably 40 to 60% by weight, including all ranges contained herein.

[0029] In one embodiment of the invention, the ratio of fatty acid having at least 10% neutralization to surfactant with high HLB content is 20:80 to 80:20, most preferably 30:70 to 70:30.

[0030] The above-mentioned ingredients must be combined and mixed into a homogeneous composition. In a preferred embodiment, the resulting cosmetic composition precursor contains less than 10% by weight of water. In another preferred embodiment, the cosmetic composition precursor contains 5% by weight or less of water. In yet another preferred embodiment, the cosmetic composition precursor contains 2.5% by weight or less of water. In yet another preferred embodiment, the cosmetic composition precursor contains 0.001 to 2.2% by weight of water.

[0031] Optional ingredients that may be beneficial to consumers include fragrances, emulsifiers, sensory modifiers, and skin-beneficial agents, which may be included in the cosmetic composition precursor of the present invention. Suitable skin-beneficial agents for use in the present invention include, but are not limited to, sunscreens, colorants, emollients, occlusive agents, plant extracts, optical agents, brightening agents, anti-inflammatory agents, anti-acne agents, sunscreens, light stabilizers, moisturizers, anti-wrinkle agents, exfoliating agents, exfoliants, mixtures thereof, etc. Each of these substances may be 0.05 to 15% by weight, preferably 0.1 to 10% by weight, and most preferably 0.2 to 5% by weight, based on the total weight of the cosmetic composition precursor.

[0032] The cosmetic composition precursors of the present invention can be sieved or subjected to any conventional method known to those skilled in the art capable of forming precursor mixtures into powder form to facilitate subsequent hydration processes. In one embodiment of the invention, the cosmetic composition precursor powder is in the form of a powder or flakes. In another embodiment of the invention, the cosmetic composition precursor has a particle size of 0.5 to 200 μm, preferably 5 to 150 μm. In a particularly preferred embodiment of the invention, the particle size is 10 to 50 μm. The particle size can be evaluated using techniques known to those skilled in the art, such as a Leitz optical microscope equipped with a cross polarizer (e.g., an optical microscope of the Laborlux 12Pol S model name) at a magnification setting of 5x to 50x.

[0033] The cosmetic composition precursor is then hydrated by combining the precursor with water, a water-soluble solvent, or a mixture thereof to prepare the desired end-use composition. Therefore, the cosmetic composition precursor to be hydrated can be used in an amount of 1 to 20% by weight, preferably 2 to 17% by weight, and more preferably 3 to 15% by weight, based on the total weight of the end-use composition. Water is the preferred solvent used in the hydration of the cosmetic composition precursor. Within the scope of the invention, the cosmetic composition precursor is hydrated at a water temperature of 3°C to 60°C, preferably 5°C to 55°C, and more preferably 7°C to 50°C. Based on the total weight of the end-use composition, the amount of water can be 60 to 99%, preferably 70 to 95%, and more preferably 75 to 90%.

[0034] The viscosity of the end-use composition of the present invention is typically from about 1,000 to about 120,000 cps, preferably from about 2,000 to 100,000 cps, and most preferably from about 5,000 to 80,000 cps, at 25°C and 1s. -1Viscosity was measured under shear rate conditions using a strain-controlled parallel plate rheometer, which was commercially available from a supplier such as TA Instruments under the name Discovery. Alternatively, viscosity could also be measured using a Brookfield viscometer (at 20 rpm, mandrel 5, Helipath off, at 25°C for one (1) minute).

[0035] The pH of the final-use hydrated composition can also be characterized by pH measurement. In this invention, the pH of the cosmetic composition precursor is 3 to 9, preferably 4 to 8.5, and most preferably 5 to 8. The pH can be measured using a pH meter, such as the Orion Star A111 Benchtop pH meter commercially available from Thermo Scientific.

[0036] In another embodiment of this invention, the invention includes a method for hydrating a cosmetic composition precursor to produce an end-use cosmetic composition, wherein further customization is achieved through the optional addition of desired ingredients. The method includes the following steps: preferably using a selected reusable and / or non-disposable container, such as a bowl or jar with a safety lid, combining 1 to 20%, preferably 2 to 17%, more preferably 3 to 15%, of the cosmetic composition precursor with a desired solvent in an unspecified order; mixing with a tool or applying shear or stirring in a moderate manner for at least 10 seconds until homogeneous; and allowing the resulting stirred mixture to stand for at least 10 seconds, preferably at least 15 seconds, most preferably at least 30 seconds, to prepare the desired hydrated end-use composition. In one embodiment of the invention, the end-use composition of the invention is ready for use within 10 seconds to 3 minutes after preparation. Suitable solvents used in this invention include water, seawater, rose water (e.g., Rosa Damascena flower water), tea water (e.g., Camellia Sinensis leaf water), Aloe vera leaf juice, witch hazel (e.g., Hamamelis Virginiana extract), lavender water (e.g., Lavendula Angustifolia flower water), grape water (e.g., Vitis Vinifera fruit water and grape juice), or mixtures thereof. In a particularly preferred embodiment, the solvent is water. The cosmetic composition precursor is immediately hydrated in the selected solvent and is characterized by rapidly establishing its structure immediately after stirring. The desired end-use cosmetic composition can be further customized by, for example, optionally adding sensory modifiers, emollients, moisturizers, preservatives, and skin-beneficial agents. In yet another embodiment, the end-use composition can be formulated as preservative-free if the consumer can hydrate the cosmetic composition precursor on demand.

[0037] In another embodiment of this invention, the invention comprises a method of hydrating a cosmetic composition precursor to produce an end-use cosmetic composition, wherein skin-beneficial agents, fragrances, and preservatives may be added to the composition of the precursor itself. The method includes the steps of: dispensing a desired amount of the precursor into the palm of a person; adding water to directly activate the precursor or applying the precursor to a wet surface; and shearing the precursor and water together with moderate force (e.g., the pressure of palms pressed together) until homogeneous. Steps one and two above can be reversed, for example, by first adding water to the palm of a person and then dispensing the desired amount of the precursor.

[0038] In another embodiment described herein, the invention comprises a method for sustainably transporting a cosmetic composition precursor in the absence of liquids such as water, water-miscible solvents, or mixtures thereof, the cosmetic composition precursor being further processed in an environmentally friendly and potentially plastic-free manner (e.g., using cardboard to package the cosmetic composition precursor) at another location, such as a consumer's home or factory. The method includes the steps of: preparing a cosmetic composition precursor according to the invention; packaging the cosmetic composition precursor in the absence of liquid or substantially free of liquid; transporting the cosmetic composition precursor to the home or manufacturing location by any conventional means known to those skilled in the art; hydrating the cosmetic composition precursor with a selected solvent present at the home or manufacturing location under appropriate agitation; and adding, in an unspecified order, optionally present ingredients to create an end-use composition. This method allows for a more compact and economical transport and delivery process, wherein the solvent is not involved in the transport process.

[0039] Once the cosmetic composition precursor is hydrated, the optional ingredients described above can be immediately added to the end-use composition, rather than being added directly to the cosmetic composition precursor. These optional ingredients may be added during manufacturing or by the consumer, depending on factors such as ingredient availability. Each of these substances may be present in an amount of 0.05 to 25% by weight, preferably 0.1 to 2% by weight, based on the weight of the end-use composition.

[0040] Polysiloxanes are suitable for optional use in this invention and can be classified into volatile and non-volatile types. The amount used can be, for example, 0.01 to 25% by weight, more preferably 0.1 to 20% by weight, and most preferably 0.5 to 6% by weight, based on the weight of the end-use composition. The term "volatile" as used herein refers to those materials that have a measurable vapor pressure at ambient temperature. Volatile silicone oils are preferably selected from cyclic (cyclomethylsiloxanes) or linear polydimethylsiloxanes containing 3 to 9, preferably 4 to 5, silicon atoms.

[0041] Non-volatile polysiloxanes available for use in end-use compositions include polyalkylsiloxanes, polyalkylarylsiloxanes, and polyether siloxane copolymers. Substantially non-volatile polyalkylsiloxanes available herein include, for example, those having a concentration of about 5 × 10⁻⁶ at 25°C. -6 up to 0.1m 2 Polydimethylsiloxane with a viscosity of / s. Emulsified and non-emulsified polysiloxane elastomers are also suitable for use in the end-use compositions of this invention.

[0042] Conventional moisturizers are typically polyhydroxy alcohols, which can be used in this invention. Typical polyhydroxy alcohols include glycerol (i.e., glycerine or glycerin), propylene glycol, dipropylene glycol, polypropylene glycol, polyethylene glycol, sorbitol, hydroxypropyl sorbitol, hexanediol, 1,3-butanediol, isopenteneglycol, 1,2,6-hexanetriol, ethoxylated glycerol, propoxylated glycerol, and mixtures thereof. The most preferred embodiments include glycerol, propylene glycol, or mixtures thereof. The amount of moisturizer used, based on the weight of the end-use composition, can be from 0.1 to 25% by weight, preferably from 0.5 to 20% by weight, more preferably from 1 to 15% by weight.

[0043] Triglycerides are another group of substances suitable for optional use in this invention. Illustrative but non-limiting examples include sunflower oil, cottonseed oil, canola oil, grapeseed oil, soybean oil, castor oil, borage oil, olive oil, shea butter, jojoba oil, and mixtures thereof. Monoglycerides and diglycerides are also available. Illustrative examples of these categories are glyceryl monostearate and glyceryl distearate. The amount of triglycerides may be from 0.01 to 10% by weight, preferably from 0.1 to 8% by weight, based on the weight of the composition for end use.

[0044] While the end-use composition is sufficiently stable and does not require the use of additional emulsifiers, in one embodiment of the invention, a high-HLB surfactant may be mixed with an optionally present low- or high-HLB emulsifier. The emulsifier may be selected from anionic, nonionic, cationic, and amphoteric surfactants. In a preferred embodiment, the emulsifier used is nonionic or cationic, or a mixture thereof. In another preferred embodiment of the invention, a low-HLB surfactant may optionally be added, wherein the combined HLB may optionally be at least 8. Within the scope of the invention, surfactants with low HLB values ​​are used provided that the combined HLB value is generally greater than or equal to 8. When a water-continuous emulsion is required, the total HLB of one or more emulsifiers used will be 8 to 17, preferably 8.5 to 15, and most preferably 9 to 14.

[0045] Suitable nonionic emulsifiers may include any nonionic emulsifier known to those skilled in the art. Particularly preferred nonionic surfactants are those having the following characteristics: C 10 -C 20 A fatty alcohol or acid hydrophobic compound, wherein each mole of the hydrophobic compound is condensed with about 2 to about 100 moles of ethylene oxide or propylene oxide; or condensed with 2 to 20 moles of olefinic oxygen in a C2-C group. 10Alkylphenols; mono- and di-fatty acid esters of ethylene glycol; mono- and di-fatty acid esters of glycerol; sorbitol mono- and di-C8-C 20 Fatty acid esters; and polyoxyethylene sorbitol and combinations thereof. Alkyl polyglycosides and glycosidic fatty amides (e.g., methylglucamide) are also suitable nonionic emulsifiers. Other preferred nonionic surfactants include glyceryl stearate, ethylene glycol stearate, and stearamide AMP.

[0046] Preferred cationic emulsifiers that can be used include, for example, palmitoylaminopropyltrimethylammonium chloride, distearyldimethylammonium chloride, diester quaternary ammonium compounds (e.g., distearylethyldimethylammonium chloride), and mixtures thereof.

[0047] The total concentration of the emulsifier, based on the weight of the end-use composition, can be from 0.1 to 20% by weight, preferably from 1 to 10% by weight, most preferably from 1 to 8% by weight, including all ranges contained herein.

[0048] If desired, anionic and amphoteric emulsifiers may also be optionally added. Some preferred anionic emulsifiers may include alkyl ether sulfates and sulfonates, alkyl sulfates and sulfonates, alkylbenzene sulfonates, alkyl and dialkyl sulfonated succinates, C8-C... 20 Acylhydroxyethyl sulfonate, C8-C 20 Acylmethyl hydroxyethyl sulfonate, C8-C 20 Acylmethyl taurine, C8-C 20 Alkyl ether phosphates, alkyl ether carboxylates, and combinations thereof.

[0049] Suitable amphoteric emulsifiers may include cocoylaminopropyl betaine, C 12 -C 20 Trialkyl betaine, sodium lauroamphoacetate, and sodium laurodiamphoacetate, or mixtures thereof.

[0050] Emulsifying / thickening additives include cross-linked acrylates (e.g. 980), hydrophobically modified acrylates (e.g. 1382), polyacrylamide (e.g., Sepigel) TM 305), polymers and copolymers of acryloyl methyl propane sulfonate / acryloyl methyl propane sulfonate (e.g.) HMB and AVC), cellulose derivatives and natural gums, starch and mixtures thereof may also optionally be added. Among the available cellulose derivatives are sodium carboxymethyl cellulose, hydroxypropyl methyl cellulose, hydroxypropyl cellulose, hydroxyethyl cellulose, ethyl cellulose and hydroxymethyl cellulose. Suitable natural gums for use in this invention include guar gum, xanthan gum, sclerotium gum, carrageenan, pectin and combinations thereof.

[0051] Hydrocarbons may optionally be included in the end-use composition of the present invention. Suitable hydrocarbons may include mineral oils, petrolatum, and polyalphaolefins. Examples of preferred volatile hydrocarbons include polydecanes such as isodecane and isododecane, and C7-C8 to C64-C8 hydrocarbons. 12 -C 15 Isoalkanes.

[0052] The end-use compositions of the present invention may include vitamins as desired additives, including derivatives thereof such as vitamin alkyl esters. Illustrative vitamins include vitamin A, vitamin B2, vitamin B3 (niacinamide), vitamin B5 (panthenol), vitamin B6, vitamin C, vitamin E, vitamin K, folic acid, and biotin. Vitamin derivatives may also be used. For example, vitamin C derivatives include tetraisopalmitate ascorbate, magnesium ascorbate phosphate, and ascorbate glucoside. Vitamin E derivatives include tocopheryl acetate, tocopheryl palmitate, and tocopheryl linoleate. Vitamin B3 derivatives include niacin. When vitamins are present in the cosmetic compositions of the present invention, the total amount of vitamins may be 0.001 to 10% by weight, preferably 0.01 to 5% by weight, and most preferably 0.05 to 2.5% by weight, based on the weight of the end-use composition.

[0053] Other additional optional skin-benefiting agents suitable for use in this invention include minerals and skin nutrients such as milk; magnesium, calcium, copper, zinc and other metallic components; retinoic acid and its derivatives (e.g., cis and trans); retinaldehyde; retinol; retinyl esters, such as retinyl acetate, retinyl palmitate and retinyl propionate; α-hydroxy acids, β-hydroxy acids, such as salicylic acid and its derivatives (e.g., 5-octanoyl salicylic acid, heptoxy-4-salicylic acid and 4-methoxy-salicylic acid); resorcinol derivatives (especially 4-substituted resorcinol derivatives, including 4-ethylresorcinol, 4-isopropylresorcinol, etc.). Hydroquinone, 4-hexylresorcinol, 4-cyclopentylresorcinol, 4-cyclohexylresorcinol and their acylated forms); resveratrol, saccharide isomers (isomerates), ceramides (e.g., ceramide 1, ceramide 3, ceramide 3B and ceramide 6) and pseudoceramides, allantoin, pentaerythritol tetra-di-tert-butylhydroxyhydrocinnamate, pyroglutamic acid (PCA) salt derivatives including zinc PCA and sodium PCA, 12-hydroxystearic acid, phellandrenic acid, conjugated linoleic acid, octadecanoic acid, hyaluronic acid and their salts, derivatives, mixtures, etc. When used, such skin-beneficial agents comprise a total of 0.001 to 12% by weight of the composition for end use.

[0054] A wide selection of plant extracts may optionally be included in the end-use compositions of the present invention. These extracts are either water-soluble or oil-soluble and are carried in hydrophilic or hydrophobic solvents, respectively. In a preferred embodiment, water or ethanol is the solvent for the extract. Illustrative examples include those extracted from green tea, yarrow, chamomile, licorice, aloe vera, citrus unshui, willow bark, alfalfa, algae, witch hazel, sage, thyme, and rosemary, as well as oils, such as those derived from sea buckthorn, moringa, argan, avocado, calendula, algae, and marula. Soybean extracts may be used, and particularly when retinol is required. When using such extracts, they are preferably used in a total amount of 0.001 to 12% by weight of the end-use composition.

[0055] Another optional additive suitable for use includes cannabis oil having 2.5 to 25% by weight of cannabidiol and / or 0.5 to 10% by weight of cannabidiol. When used, such oil constitutes 0.0001 to 12% by weight of the composition, preferably 0.01 to 5% by weight, including all ranges contained therein.

[0056] Preservatives may be added to the end-use compositions of the present invention as needed to prevent the growth of potentially harmful microorganisms. Cosmetic chemists are familiar with suitable preservatives and typically select them to meet preservative testing and product stability testing requirements. The selection of a preservative system should take into account the intended use of the composition and potential incompatibilities between the preservative and other components in the formulation. Exemplary examples of preservatives used in the compositions of the present invention include, but are not limited to, iodopropynyl butyl carbamate (IPBC), phenoxyethanol, ethylhexylglycerin, 1,2-octanediol, methylparaben, propylparaben, imidazolidinyl urea, sodium dehydroacetate, propylene glycol, alkyl esters of parabens, hydroxyacetophenone, DMDM ​​hydantoin derivatives, climbazole, propionates, and various quaternary ammonium compounds. Preservatives are preferably used in an amount of 0.01 to 2% by weight of the end-use composition.

[0057] Many types of packaging can be used for storing and delivering the end-use compositions of this invention. The choice of packaging depends on the personal care end-use and the viscosity of the composition itself. As examples, rinse-free lotions and creams for skin typically use plastic containers with an opening at the dispensing end, which is covered by a suitable closure. Conventional closures include hinged flap caps and screw caps. Generally, patches, bottles, tubes, ball applicators, squeeze containers, or cans with lids are preferred.

[0058] The present invention, as a cosmetic composition for end use, is a composition suitable for topical application to human skin, particularly a no-rinse product, to deliver beneficial effects to the skin.

[0059] The invention will now be described in the context of specific, non-limiting embodiments to facilitate a better understanding of the invention. Those skilled in the art will recognize that variations of the invention, different from the given embodiments, can be practiced without departing from the teachings of the invention.

[0060] Example

[0061] All samples were prepared by mixing the mentioned components under moderate shear conditions, approximately 22°C to approximately 85°C, and atmospheric pressure.

[0062] Example 1. Main components of a cosmetic composition precursor

[0063]

[0064] Samples 1 and 2 are sugar-based surfactants with high HLB values. Samples 3 and 4 are both ethoxylated surfactants with high HLB values. Sample 5 is a low HLB surfactant. Sample 6 has the same composition as Sample 1, but does not contain any base.

[0065] The results confirmed the unexpected importance of using high-HLB surfactants in the precursors of cosmetic compositions when considering remodeling time. Samples with high-HLB surfactants showed that remodeling required less than 1 minute, while sample 5 with low-HLB surfactants required approximately 10 minutes. Furthermore, the results indicated that samples with high-HLB surfactants but lacking an inorganic base such as potassium hydroxide to achieve at least 10% neutralization of fatty acids did not allow for rapid remodeling times. In sample 6, where fatty acids were not neutralized, remodeling required a duration exceeding 10 minutes.

[0066] Example 2. Montanov TM 68 / Acid-to-soap ratio of the stearic acid system

[0067]

[0068] The results showed that stearic acid with at least 10% partial neutralization in the cosmetic composition precursor prepared according to the present invention unexpectedly resulted in a reconstitution time of less than 1 minute.

[0069] Example 3. Different counterions in Montanov TM Effects of 68 / Stearic acid system

[0070]

[0071]

[0072] The results confirmed that, despite the different types of counterions, neutralizing bases containing different counterions are suitable for use as precursors to cosmetic compositions without affecting or impairing the immediate hydration rate of the resulting cosmetic composition precursor. Each sample in Example 3 achieved a remodeling time of less than 1 minute.

[0073] Example 4: Use of cosmetic composition precursors in the preparation of customized end-use lotions

[0074] Element ％ Function water 78.1 alkali precursor 5 alkali glycerin 5 Moisturizer elastomer 10 Sensory modulators Retinol (15% solution in caprylic / capric triglyceride) 0.7 Skin benefits 4-Hexylresorcinol (20% solution in caprylic / capric triglyceride) 1.2 Skin benefits

[0075] This embodiment illustrates the use of the cosmetic composition precursor of the present invention to create an end-use composition containing a moisturizer, a sensory modifier, and desired skin-beneficial agents. The resulting end-use composition has a stable viscosity and no dehydration shrinkage was observed.

Claims

1. A cosmetic composition precursor comprising: (a)C 10-22 fatty acids; and (b) High HLB surfactants, The HLB value is at least 8, and the C 10-22 The fatty acid is partially neutralized by at least 10%, and the ratio of the fatty acid to the high HLB surfactant is between 10:90 and 90:10; wherein the fatty acid includes lauric acid, myristic acid, palmitic acid, stearic acid, isostearic acid, hydroxystearic acid, oleic acid, linoleic acid, ricinoleic acid, arachidic acid, benzyl acid, erucic acid, or mixtures thereof, and wherein the precursor contains 30 to 70% by weight of the fatty acid; wherein the high HLB surfactant includes arachidonic glucoside, cetearyl glucoside, cocoyl glucoside, decyl glucoside, PEG-100 stearate, polysorbate 40, polysorbate 20, stearyl alcohol polyether-21, PEG-40 hydrogenated castor oil, sucrose cocoate, sucrose stearate, or mixtures thereof, and wherein the precursor contains 10 to 70% by weight of the surfactant.

2. The cosmetic composition precursor according to claim 1, wherein C 10-22 The fatty acids are partially neutralized by at least 10% of an inorganic base, an organic base, or a mixture thereof.

3. The cosmetic composition precursor according to claim 2, wherein, The neutralizing agent is an inorganic base, which is selected from sodium hydroxide, potassium hydroxide, and mixtures thereof.

4. The cosmetic composition precursor according to claim 3, wherein the inorganic base partially neutralizes the fatty acid compound to a degree of neutralization of 10 to 65%.

5. The cosmetic composition precursor according to claim 1, wherein the fatty acid is stearic acid, palmitic acid, lauric acid, or a mixture thereof.

6. The cosmetic composition precursor according to claim 1, wherein, The high HLB surfactants include cetearyl glucoside, or a combination of cetearyl glucoside and fatty alcohols.

7. The cosmetic composition precursor of claim 1, wherein the precursor is substantially free of water, and wherein substantially free of water means comprising less than 10 wt%.

8. The cosmetic composition precursor according to claim 1, wherein the precursor is hydrated in water, a water-miscible solvent, or a mixture thereof at a water temperature of 3°C to 60°C, and further wherein the reconstitution time is at least 10 seconds.

9. The cosmetic composition precursor according to claim 1, wherein the precursor composition is in powder form having a particle size of 0.5 to 200 μm.

10. The cosmetic composition precursor of claim 1, wherein the precursor further comprises a sensory modifier, emollient, moisturizer, preservative, fragrance, skin-beneficial agent, or mixture thereof.

11. A method for hydrating a cosmetic composition precursor according to any one of claims 1 to 10 with water, a water-miscible solvent, or a mixture thereof, the method comprising the steps of: (a) Add 1 to 20% of the precursor to water, a water-miscible solvent, or a mixture thereof in a container; (b) Mix or stir with a tool for at least 10 seconds until a homogeneous mixture is produced; (c) Allow the mixture to stand for at least 10 seconds, or if the tool is two hands, use the stirred mixture immediately; (d) Optionally add sensory modifiers, emollients, moisturizers, preservatives, fragrances, skin-beneficial agents, or mixtures thereof.

12. A method for hydrating a cosmetic composition precursor according to any one of claims 1 to 10 with water, a water-miscible solvent, or a mixture thereof, said method comprising the following steps in an unspecified order: (a) Dispense 1 to 20% of the precursor into the palm of a person; (b) Add water, a water-miscible solvent, or a mixture thereof to hydrate the precursor; (c) The precursor is sheared together with water, a water-miscible solvent, or a mixture thereof until a homogeneous mixture is produced. Steps (a) and (b) can be interchanged in relative order.

13. A method for sustainably transporting and packaging a cosmetic composition precursor in a substantially liquid-free manner, wherein "substantially liquid-free" means comprising less than 10% by weight, the method comprising the following steps in an unspecified order: (a) Preparing or obtaining a cosmetic composition precursor according to any one of claims 1 to 10; (b) The package contains no liquid of the precursor; (c) Transport the precursor to the manufacturing site; (d) Hydrate the precursor with water at the manufacturing site while mixing or stirring; (e) Optionally, additional ingredients may be added to produce an end-use composition.

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