Cosmetic composition containing polyacrylate crosspolymer-6 and a high HLB nonionic surfactant

Abstract

A cosmetic composition is disclosed that includes, by weight, (a) about 1.5% to about 5% by weight of polyacrylate crosspolymer-6, (b) about 0.05% to about 5% of a nonionic surfactant having an HLB of about 10 to about 20, and (c) an aqueous carrier, wherein the composition satisfies at least one of the following conditions (i) to (iii): (i) the pH of the composition is between about 2.0 and about 5.0; (ii) the nonionic surfactant is liquid at 20°C; and (iii) the composition is substantially free of hydroxyethyl cellulose and xanthan gum. The composition of the present invention provides improved flowability of the composition.

Description

[Technical Field]

[0001] The present invention relates to a cosmetic composition comprising, by weight, (a) about 1.5% to about 5% polyacrylate crosspolymer-6, (b) about 0.05% to about 5% of a nonionic surfactant having an HLB of about 10 to about 20, and (c) an aqueous carrier, wherein the composition satisfies at least one of the following conditions (i) to (iii): (i) the pH of the composition is between about 2.0 and about 5.0; (ii) the nonionic surfactant is liquid at 20° C.; and (iii) the composition is substantially free of hydroxyethyl cellulose and xanthan gum. The composition of the present invention provides improved flowability of the composition. [Background technology]

[0002] Mammalian keratinous tissue, particularly human skin, is subject to various damages caused by both exogenous and endogenous factors. Such exogenous factors include ultraviolet light, environmental pollution, wind, heat, infrared rays, low humidity, harsh surfactants, abrasives, etc. Meanwhile, endogenous factors include chronological aging and other biochemical changes within the skin. Whether exogenous or endogenous, these factors result in visible signs of skin damage. Typical skin damage in aged or damaged skin includes fine lines, wrinkles, hyperpigmentation, pale skin, sagging, dark circles under the eyes, puffy eyes, enlarged pores, a slow turnover rate, and abnormal desquamation or peeling. Additional damage caused by both exogenous and endogenous factors includes visible necrotic skin, i.e., peeling, flaking, dryness, and roughness.

[0003] Currently, there are several personal care products available to consumers that are aimed at improving the health and physical appearance of keratinous tissues such as skin, hair, and nails.Most of these products are aimed at delaying, minimizing, or even eliminating skin wrinkles, age spots, and other histological changes that are typically associated with skin aging or environmental damage to human skin.Consumers prefer topically applied products because they are not only effective, but also safe and comfortable to use.

[0004] In such products, various hydrophilic thickeners are used so that the product has a viscosity suitable for application to, for example, the skin.

[0005] However, among such hydrophilic thickeners, it has been found by the inventors that polyacrylate crosspolymer-6 can provide reduced stiffness of the composition, for example, difficulty in removing the correct amount from the package and / or difficulty in seeing smooth flow when tilted / shaken, which provides a very lumpy feel / appearance, especially at higher levels. Summary of the Invention [Problem to be solved by the invention]

[0006] Based on the above, there is a need for cosmetic compositions that include higher levels of polyacrylate crosspolymer-6 while providing improved flow properties of the composition. [Means for solving the problem]

[0007] The present invention comprises, by weight: (a) about 1.5% to about 5% polyacrylate crosspolymer-6; (b) about 0.05% to about 5% of a nonionic surfactant having an HLB of about 10 to about 20; (c) an aqueous carrier, The composition satisfies the following conditions (i) to (iii): (i) the pH of the composition is between about 2.0 and about 5.0; (ii) the nonionic surfactant is a liquid at 20°C; and (iii) The composition is substantially free of hydroxyethyl cellulose and xanthan gum.

[0008] The compositions of the present invention provide improved flowability of the composition while containing higher levels of polyacrylate crosspolymer-6. Surprisingly, it has been found that by using a higher HLB nonionic surfactant, the compositions of the present invention provide improved flowability compared to compositions having similar viscosity but using a lower HLB nonionic surfactant. DETAILED DESCRIPTION OF THE INVENTION

[0009] References herein to "an embodiment" or the like mean that a particular material, feature, structure, and / or characteristic described in connection with that embodiment is included in at least one embodiment, and optionally in multiple embodiments, but do not mean that all embodiments incorporate the described material, feature, structure, and / or characteristic. Furthermore, materials, features, structures, and / or characteristics may be combined in any suitable manner across different embodiments, and materials, features, structures, and / or characteristics may be excluded or substituted from those described. Accordingly, the embodiments and aspects described herein can include or be combined with elements or components of other embodiments and / or aspects, even if not explicitly illustrated in combination, unless specifically stated otherwise or unless stated to be incompatible.

[0010] In all embodiments, unless otherwise specifically stated, all percentages of ingredients are based on the weight of the cosmetic composition. Unless otherwise specifically stated, all ratios are by weight. Significant figures do not represent limitations on the indicated amounts or on the precision of measurements. Unless otherwise specifically stated, all quantities are understood to be modified by the word "about." Unless otherwise specified, all measurements are understood to be made at about 25°C and ambient conditions, where "ambient conditions" means conditions under about 1 atmosphere and about 50% relative humidity. All numerical ranges are inclusive and can be combined to form smaller ranges not expressly disclosed. For example, delimited upper and lower range limits are interchangeable to create further ranges.

[0011] The compositions of the present invention can comprise, consist essentially of, or consist of the essential and optional components described herein. As used herein, "consisting essentially of" means that the composition or component may include only additional ingredients that do not materially alter the basic and novel characteristics of the claimed composition or method. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise.

[0012] definition "About" modifies a particular value by referring to a range equal to plus or minus 20 percent (±20%) or less (e.g., less than 15%, 10%, or even less than 5%) of the stated value.

[0013] "Applying" or "application" as used in reference to a composition means applying or spreading a composition of the present invention onto the surface of human skin, such as the epidermis.

[0014] As used herein, "derivative" refers to amide, ether, ester, amino, carboxyl, acetyl and / or alcohol derivatives of a given compound.

[0015] "Effective amount" means an amount of compounds and compositions sufficient to significantly induce a positive effect on keratinous tissue over the course of a treatment period. The positive effect may be a health, appearance, and / or feel effect, including the effects disclosed herein, individually or in combination.

[0016] "Cosmetic agent" means any substance and any components thereof intended to be rubbed, poured, sprinkled, sprayed, introduced, or otherwise applied to the mammalian body or any part thereof to produce a cosmetic effect. Cosmetic agents can include substances generally recognized as safe (GRAS) by the U.S. Food and Drug Administration, food additives, and materials used in non-cosmetic consumer products such as over-the-counter drugs.

[0017] "Cosmetic composition" means a composition containing a cosmetic agent. Examples of cosmetic compositions include color cosmetics (e.g., foundation, lipstick, concealer, and mascara), skin care compositions (e.g., moisturizers and sunscreens), personal care compositions (e.g., rinse-off and leave-in body washes and soaps), and hair care compositions (e.g., shampoos and conditioners).

[0018] "Skin care" means regulating and / or improving skin condition (e.g., skin health, appearance, or texture / feel). Some non-limiting examples of improving skin condition include improving the appearance and / or feel of skin by providing a smoother, more uniform appearance and / or feel, increasing the thickness of one or more layers of skin, improving skin elasticity or resilience, improving skin firmness, as well as reducing the oily, shiny, and / or dull appearance of skin, improving skin hydration or moisture content, improving the appearance of fine lines and / or wrinkles, improving skin exfoliation or scaling, plumping skin, improving skin barrier properties, improving skin tone, reducing the appearance of redness or skin blemishes, and / or improving skin brightness, radiance, or clarity.

[0019] "Skin care active" means a compound or combination of compounds that, when applied to the skin, has an acute and / or chronic effect on the skin or a type of cell normally found in the skin. Skin care actives can regulate and / or improve the skin or cells associated therewith (e.g., improve skin elasticity, hydration, skin barrier function, and / or cellular metabolism).

[0020] "Skin care composition" means a composition that contains skin care actives and that regulates and / or improves the condition of the skin.

[0021] "Synergistic" and variations thereof mean that the effect provided by the combination of two or more materials is greater than the expected additive effect of those materials.

[0022] As used herein, "treatment period" refers to the length of time and / or frequency that a material or composition is applied to a target skin surface.

[0023] Cosmetic composition The cosmetic composition of the present invention comprises polyacrylate crosspolymer-6 and a nonionic surfactant having an HLB of about 10 to about 20, and the composition satisfies at least one of the following conditions (i) to (iii): (i) the pH of the composition is between about 2.0 and about 5.0; (ii) the nonionic surfactant is liquid at 20°C; and (iii) the composition is substantially free of hydroxyethyl cellulose and xanthan gum.

[0024] In the composition, the weight ratio of polyacrylate crosspolymer-6 to nonionic surfactant is preferably about 15:1 to about 1:15, more preferably about 8:1 to about 1:8, even more preferably about 5:1 to about 1:5, and even more preferably about 5:1 to about 1:3, from the viewpoint of providing improved fluidity of the composition.

[0025] The present compositions preferably have a viscosity of from about 100 cP to about 60,000 cP, more preferably from about 1000 cP to about 55,000 cP, more preferably from about 1,000 to about 48,000 cP, especially when the compositions have higher levels of water.

[0026] When the compositions of the present invention contain solid oils (having a melting point above 30°C), such as shea butter, cetyl alcohol, stearyl alcohol, and / or behenyl alcohol, it is preferred that the compositions contain limited amounts of such solid oils, as this provides a fresh / light feel from compositions containing higher levels of water. The total level of solid oil in the composition is preferably at most about 0.5%, more preferably at most about 0.3%, even more preferably at most about 0.1%, and even more preferably 0%.

[0027] In view of the improved flowability due to the use of higher HLB nonionic surfactants in compositions containing higher levels of polyacrylate crosspolymer-6, it may be preferred in the present invention that the composition is substantially free of hydroxyethyl cellulose and xanthan gum. The total level of hydroxyethyl cellulose and xanthan gum in the composition is preferably at most about 0.1%, more preferably at most about 0.05%, even more preferably at most about 0.01%, and even more preferably 0%.

[0028] The cosmetic compositions herein are intended for topical application to human skin. The compositions herein may optionally contain one or more additional skin active agents or other ingredients of the type typically found in topical cosmetic compositions.

[0029] The cosmetic compositions herein may be cosmetic compositions, pharmaceutical compositions, or cosmeceutical compositions and may be provided in a variety of product forms, including, but not limited to, solutions, suspensions, lotions, gels, toners, washes, hydrogels, film-forming products, and the like. In some cases, the form of the composition may depend on the particular dermatologically acceptable carrier selected. For example, the composition (and carrier) may be provided in the form of an emulsion (e.g., water-in-oil, oil-in-water, or water-in-oil-in-water) or an aqueous dispersion. Preferably, the cosmetic compositions of the present invention are in the form of an oil-in-water emulsion.

[0030] pH of the composition Typically, cosmetic compositions are formulated to have a slightly acidic to neutral pH (i.e., 5.0-7.0), which is believed to improve the stability of certain ingredients in the composition (e.g., niacinamide, salicylates, and neutralized thickeners). However, skin care compositions can also be formulated at a lower pH (e.g., 2.0-5.0) to provide specific benefits such as improving the appearance of the skin, strengthening the skin's acid mantle, exfoliating the skin, improving skin texture, and / or providing flexibility in product formulation.

[0031] It would be preferable for the compositions of the present invention to have a lower pH, i.e., a pH of about 2.0 to about 5.0, preferably about 2.0 to about 4.5, even more preferably about 2.5 to about 4.0, or even more preferably about 3.5 to about 3.9.

[0032] It has been found that polyacrylate crosspolymer-6 can provide the composition with suitable resistance to low pH environments, as well as desirable texture and opacity.At even lower pH, it is preferable to use an increased amount of polyacrylate crosspolymer-6 to provide the composition with a specific viscosity, but it has also been found that such an increased amount of polyacrylate crosspolymer-6 tends to cause reduced fluidity, especially when the composition has a lower pH.By using the above-mentioned specific nonionic surfactant, the composition provides improved fluidity while maintaining sufficient viscosity derived from polyacrylate crosspolymer-6.

[0033] Low pH acid buffer system Various acids are known for use in skin care compositions. For example, alpha hydroxy acids (e.g., citric acid, glycolic acid, malic acid, and lactic acid), beta-hydroxy acids (e.g., salicylic acid and propanoic acid), and polyhydroxy acids (e.g., gluconic acid) are commonly used as exfoliants. However, some acids are stronger than others, and / or some people may be more sensitive to certain concentrations of acid than others. Both of these factors may increase the risk of skin irritation caused by low-pH compositions containing acids. Lactic acid is one of the alpha hydroxy acids that is relatively mild in terms of skin irritation, yet is strong enough to provide the desired low pH in the present compositions. In addition, lactic acid can provide skin benefits that other alpha hydroxy acids (e.g., glycolic acid, citric acid, or malic acid) cannot provide. For example, lactic acid may help improve the skin's natural moisturizing factors and / or stimulate collagen regeneration to help improve signs of skin aging. Therefore, the compositions herein contain lactic acid in an amount and concentration that imparts the desired low pH to the skin care compositions herein. In some cases, the low pH compositions herein may contain 0.5% to 5% (eg, 0.75% to 4%, 1% to 3%, or 1.5% to 2.5%) of lactic acid and / or gluconic acid.

[0034] When providing a low pH composition for topical application to the skin, it is important to include a buffering agent to help maintain the pH of the composition after application to the skin. On average, the pH of human skin is typically in the range of about 5.0 to 6.0. To maintain this pH, human skin has evolved a natural buffering system that resists pH changes. Thus, when a low pH composition is applied to the skin, the skin's natural buffering system attempts to adjust the pH of the composition to match the skin's natural pH. A low pH composition may not provide the desired skin care benefits without the addition of a buffering agent.

[0035] The low pH compositions herein include sodium lactate and / or sodium gluconate buffers, depending on the acid used in the composition to lower the pH. The sodium lactate and / or sodium gluconate buffers may be present in any amount suitable to maintain the pH of the composition at a desired level upon application to the skin and for at least 1 minute thereafter (e.g., 5, 10, 15, 30, 60, or even 120 minutes or more after application) to allow sufficient time for the active ingredients in the composition to penetrate the skin. In some cases, sodium lactate may be present in the low pH composition at 0.25% to 4% (e.g., 0.5% to 3%, 0.75% to 2%, or 1% to 1.75%). In some cases, the salt buffer may be present at an acid-to-buffer weight ratio of 1:10 to 10:1. It may be desirable to use the L-enantiomer form of the acid and / or salt buffer, which is the form that naturally occurs in the body. Sodium lactate is a particularly suitable buffering agent because, in addition to acting as a buffering agent, it also acts as a humectant, helping to moisturize the skin. Of course, it should be understood that the present compositions may optionally include other pH buffering agents known for use in skin care compositions.

[0036] Polyacrylate Crosspolymer-6 The compositions of the present invention include polyacrylate crosspolymer-6 at a level of from about 1.5% to about 5%, more preferably from about 1.8% to about 4%, and even more preferably from about 2.0% to about 4.0%.

[0037] Polyacrylate crosspolymer-6 is commercially available, for example, as SEPIMAX ZEN manufactured by Seppic (France).

[0038] Nonionic surfactants The compositions of the present invention contain a nonionic surfactant at a level of about 0.05% to about 5%, preferably about 0.1% to about 3%. Nonionic surfactants useful herein have an HLB of about 10, preferably about 11 to about 20, to provide improved fluidity of the composition. Among these, those that are liquid at 20°C are more preferred, for example, from the standpoint of ease of manufacturing. Highly preferred liquid nonionic emulsifiers useful herein include, for example, glycereth-25 PCA isostearate, which has an HLB of 14, and polysorbate-20, which has an HLB of 16.7.

[0039] Any nonionic emulsifier can be used as long as the nonionic surfactant has the above HLB. Examples of such nonionic emulsifiers that may be suitable for use herein include ethers of polyglycols and ethers of fatty alcohols, esters of polyglycols and esters of fatty acids, ethers of polyglycols and ethers of glycosylated fatty alcohols, esters of polyglycols and esters of glycosylated fatty acids, ethers of C12-30 alcohols and ethers of glycerol or polyglycerol, esters of C12-30 fatty acids and esters of glycerol or polyglycerol, ethers of oxyalkylene-modified C12-30 alcohols and ethers of glycerol or polyglycerol, ethers of C1-230 fatty alcohols including sucrose or glucose, ethers of sucrose or ethers of glucose, esters of sucrose and esters of C1230 fatty acids, esters of pentaerythritol and esters of C12-30 fatty acids, esters of sorbitol and / or esters of sorbitan and C12 Examples of emulsifiers include esters of C12-30 fatty acids, ethers of sorbitol and / or ethers of sorbitan and ethers of alkoxylated sorbitan, ethers of polyglycols and ethers of cholesterol, esters of C12-30 fatty acids, and alkoxylated ethers of sorbitol and / or sorbitan, and combinations thereof. A particularly useful class of emulsifiers are polyethylene glycol ethers of lauryl alcohol, such as laureth-1 through laureth-50 (e.g., laureth-4). Further examples of emulsifiers include ethers of glycerol, polyglycerol, sucrose, glucose, or sorbitol; esters of glycerol, polyglycerol, sucrose, glucose, or sorbitol; and mixtures thereof. Another particularly useful class of emulsifiers are alkyl esters of sorbitol and sorbitol anhydrides, such as polysorbate 20, polysorbate 21, and polysorbate 40.

[0040] Silicone emulsifiers can be suitable for use herein. Linear or branched silicone emulsifiers can also be used. Particularly useful silicone emulsifiers can include polyether-modified silicones such as KF-6011, KF-6012, KF-6013, KF-6015, KF-6015, KF-6017, KF-6043, KF-6028, and KF-6038, and polyglycerol-modified linear or branched siloxane emulsifiers such as KF-6100, KF-6104, and KF-6105 (all manufactured by Shin-Etsu Corporation).

[0041] silica The present compositions preferably contain silica at a level of from about 0.1% to about 10%, more preferably from about 0.3% to about 7%, and even more preferably from about 0.5% to about 5%.

[0042] The silica useful herein has an average particle size of about 0.5 microns to about 35 microns, preferably about 1 micron to 31 microns, more preferably about 1 micron to 15 microns, and even more preferably about 1 micron to about 10 microns, from the viewpoint of improved sensory feel. This is because particles that are too small may not provide sufficient lubricity, while particles that are too large may result in a scrubbing feel. Preferably, the silica is spherical.

[0043] The silica useful herein has an oil absorption of about 1 mL / 100 g to about 130 mL / 100 g, preferably about 1 mL / 100 g to about 120 mL / 100 g, more preferably about 1 mL / 100 g to about 100 mL / 100 g, and even more preferably about 1 mL / 100 g to about 50 mL / 100 g, from the viewpoint of balancing improved sensory feel and improved moisturizing feel.

[0044] Commercially available examples of spherical silica having such particle sizes and oil absorptions include Goddball G6C, which has an average particle size of 3 to 5 microns and an oil absorption of 30 mL / 100 g, and Goddball E90C, which has an average particle size of 30 microns and an oil absorption of 120 mL / 100 g.

[0045] Lauroyl Lysine The compositions of the present invention preferably contain lauroyl lysine at a level of from about 0.1% to about 10%, preferably from about 0.3% to about 7%, more preferably from about 0.5% to about 5%.

[0046] The composition of the present invention contains lauroyl lysine at a level of about 0.1% to about 10%, preferably about 0.3% to about 7%, more preferably about 0.5% to about 5%. The shape of lauroyl lysine may be any shape. Preferably, the shape of lauroyl lysine is a sphere or a flattened polygon (selected from a flattened pentagon, a flattened hexagon, and a flattened heptagon, preferably a flattened hexagon). More preferably, the shape of lauroyl lysine is a flattened polygon.

[0047] In consideration of improving the sensory feel, the flat polygonal lauroyl lysine preferably has an average particle size of about 10 microns to about 40 microns, more preferably about 15 microns to about 35 microns, and more preferably about 20 microns to 30 microns, because particles that are too small may not provide a sufficiently elastic / soft feel, and particles that are too large may result in a scrubbing-like feel.

[0048] A commercially available example of such flat polygonal lauroyl lysine having such particle size is Amihope LL, which has a flat hexagonal shape and an average particle size of 20 to 30 microns, available from Ajinomoto Co., Inc.

[0049] The spherical lauroyl lysine preferably has an average particle size of about 1 micron to about 30 microns, more preferably about 2 microns to about 20 microns, and more preferably about 3 microns to 8 microns.

[0050] Lauroyl lysine, especially when in the form of a flat polygon, may be dispersed in the composition as a layered structure containing some or several flat polygonal crystals.

[0051] Lauroyl lysine is believed to provide improved moisturizing / cushion-like feel compared to starch solid powder and cellulose solid powder.

[0052] Similarly, lauroyl lysine is believed to reduce pilling and / or agglomeration, especially when composition contains high level of hydrophilic thickener, compared with hydrophilic solid polymer powder such as starch solid powder and cellulose solid powder.Because of this pilling and / or agglomeration reduction, it may be preferable that the present composition does not substantially contain such hydrophilic solid polymer powder, i.e., contains 0.1% or less, more preferably 0.05% or less of such hydrophilic solid polymer powder.Even more preferably, the present composition does not contain such hydrophilic solid polymer powder, i.e., contains 0% of such hydrophilic solid polymer powder.

[0053] It is also believed that lauroyl lysine can provide a matte appearance and / or reduced visibility of skin pores.

[0054] Substantially free of microplastic solid particles When the composition of the present invention contains silica and / or lauroyl lysine, it can provide a reduced sticky feeling while maintaining sufficient viscosity derived from polyacrylate crosspolymer-6 without using microplastic solid particles.Therefore, when the composition of the present invention contains silica and / or lauroyl lysine, it can also provide environmental benefits by considering the reduced use of microplastic solid particles.Such microplastic solid particles are, for example, nylon powder, polyurethane powder, polyethylene powder, and silicone resin powder.In the present invention, when the composition contains silica and / or lauroyl lysine, it is preferred that the composition is substantially free of such microplastic solid particles.More preferably, the composition of the present invention does not contain such microplastic solid particles, i.e., it contains 0% of such microplastic solid particles.

[0055] Aqueous carrier / water The composition preferably comprises an aqueous carrier. Preferably, the aqueous carrier is substantially water. Preferably, deionized water is used. Depending on the desired properties of the composition, water derived from natural sources containing mineral cations can also be used.

[0056] The compositions of the present invention contain water at a level of from about 55% to about 99%, preferably from about 60% to about 98%, more preferably from about 60% to about 95%, and even more preferably from about 60% to about 90% by weight of the composition.

[0057] In some cases, the compositions herein are in the form of oil-in-water ("O / W") emulsions, which provide a light, non-greasy sensory feel. Suitable O / W emulsions herein may comprise more than 50% by weight of the composition as a continuous aqueous phase, with the remainder being a dispersed oil phase. The aqueous phase may comprise 1% to 99% water, based on the weight of the aqueous phase, along with any water-soluble and / or water-miscible ingredients. In these cases, the dispersed oil phase is typically present at less than 30% by weight of the composition (e.g., 1% to 20%, 2% to 15%, 3% to 12%, 4% to 10%, or even 5% to 8%) to help avoid some of the undesirable sensory effects of oily compositions. The oil phase may comprise one or more volatile and / or non-volatile oils (e.g., vegetable oils, silicone oils, and / or hydrocarbon oils).

[0058] Skin conditioning agent Optionally, the compositions of the present invention can further comprise a skin conditioning agent. These agents may be selected from moisturizing agents and emollients. The amount of skin conditioning agent may range from about 1% to about 50%, preferably from about 2% to about 40%, and more preferably from about 5% to about 30% by weight of the composition.

[0059] The humectant is a polyhydric alcohol intended to moisturize, reduce flaking, and stimulate the removal of accumulated flaking from the skin.Typical polyhydric alcohols include polyalkylene glycols, more preferably alkylene polyols and their derivatives.Examples include propylene glycol, dipropylene glycol, polypropylene glycol, polyethylene glycol, sorbitol, hydroxypropyl sorbitol, hexylene glycol, 1,3-butylene glycol, 1,2,6-hexanetriol, ethoxylated glycerin, propoxylated glycerin, and mixtures thereof.Most preferably, the humectant is glycerin.

[0060] When the conditioning agent is an emollient, it may be selected from hydrocarbons, fatty acids, fatty alcohols and esters.

[0061] Fatty alcohol The compositions herein may include a fatty alcohol, which refers to a high molecular weight, straight-chain primary alcohol having the general structure:

[0062] [ka] In the formula, n=8 to 32.

[0063] Fatty alcohols may be natural or synthetic, saturated or unsaturated, branched or straight-chain. Some non-limiting examples of fatty alcohols commonly used in cosmetic compositions include capric alcohol, caprylic alcohol, lauryl alcohol, myristyl alcohol, cetyl alcohol, stearyl alcohol, and behenyl alcohol. Fatty alcohols herein may be referred to generically by the number of carbon atoms in the molecule. For example, "C12 alcohol" refers to an alcohol having 12 carbon atoms in its chain (i.e., dodecanol).

[0064] Fatty alcohols may be included in the compositions herein at 0.0001% to 15% (e.g., 0.0002% to 10%, 0.001% to 15%, 0.025% to 10%, 0.05% to 7%, 0.05% to 5%, or even 0.1% to 3%) by weight of the composition.

[0065] Whitening agents The composition of the present invention may contain a whitening agent.The whitening agent useful herein refers to an active ingredient that not only changes the appearance of the skin, but also further improves excessive hyperpigmentation compared to before treatment.The whitening agents useful herein include ascorbic acid compounds, vitamin B3 compounds, azelaic acid, butylhydroxyanisole, gallic acid and its derivatives, hydroquinone, kojic acid, arbutin, mulberry extract, tetrahydrocurcumin, and mixtures thereof.The combined use of whitening agents is considered to be advantageous in that they can produce whitening effects through different mechanisms.

[0066] When used, the present composition preferably contains from about 0.1% to about 10%, more preferably from about 0.2% to about 5%, by weight of the composition, of a whitening agent.

[0067] Ascorbic acid compounds are useful whitening agents, and ascorbyl glucoside is a preferred derivative of ascorbic acid compounds.

[0068] Conditioning Agent The compositions herein may comprise 0.1% to 50% by weight of a conditioning agent (e.g., 0.5% to 30%, 1% to 20%, or even 2% to 15% by weight). The addition of a conditioning agent can help provide the composition with desirable feel characteristics (e.g., a silky, smooth feel upon application). Some non-limiting examples of conditioning agents include hydrocarbon oils and waxes, silicones, fatty acid derivatives, cholesterol, cholesterol derivatives, diglycerides, triglycerides, vegetable oils, vegetable oil derivatives, acetoglyceride esters, alkyl esters, alkenyl esters, lanolin, wax esters, beeswax derivatives, sterols and phospholipids, salts, isomers, and derivatives thereof, and combinations thereof.

[0069] Particularly suitable examples of conditioning agents include volatile silicone fluids such as dimethicone copolyol, dimethylpolysiloxane, diethylpolysiloxane, mixed C1-30 alkylpolysiloxane, phenyldimethicone, dimethiconol, dimethicone, dimethiconol, silicone crosspolymers, and combinations thereof. Dimethicone may be particularly suitable because some consumers associate the feel properties provided by certain dimethicone fluids with good moisturizing.

[0070] Hydrophilic thickener In some embodiments, the compositions of the present invention may further comprise an additional hydrophilic thickener. If present, the compositions preferably comprise from about 0.01% to about 5%, more preferably from about 0.1% to about 4%, and even more preferably from about 0.1% to about 3%, by weight of the composition, of a hydrophilic thickener.

[0071] The hydrophilic thickeners useful herein are not particularly limited, as long as they are those commonly used in cosmetics. Examples include natural or semi-synthetic water-soluble polymers, synthetic water-soluble polymers, and inorganic water-soluble polymers.

[0072] The natural or semi-synthetic water-soluble polymer is preferably a polysaccharide or its derivative (including a water-soluble alkyl-substituted polysaccharide derivative). Specific examples include plant polymers such as gum arabic, tragacanth gum, galactan, guar gum, locust bean gum, karaya gum, carrageenan, pectin, agar, quince seed (quince), algae glue (brown algae extract), starch (rice, corn, potato, wheat), and glycyrrhizic acid, microbial polymers such as xanthan gum, dextran, succinoglycan, and pullulan, starch-based polymers such as carboxymethyl starch and methylhydroxypropyl starch, cellulose-based polymers such as methylcellulose, nitrocellulose, ethylcellulose, methylhydroxypropyl cellulose, hydroxyethyl cellulose, sodium cellulose sulfate, hydroxypropyl cellulose, sodium carboxymethylcellulose (CMC), crystalline cellulose, and cellulose powder, and alginic acid-based polymers such as sodium alginate and propylene glycol alginate.

[0073] Examples of synthetic water-soluble polymers include ionic or non-ionic water-soluble polymers, for example, vinyl polymers such as polyvinyl alcohol, polyvinyl methyl ether, polyvinylpyrrolidone, and carboxyvinyl polymers (carbomers), and acrylic polymers such as sodium polyacrylate, polyethyl acrylate, polyacrylamide compounds, and acrylic acid / alkyl methacrylate copolymers (trade name "Pemulen TR-1").

[0074] The polyacrylamide compound particularly includes a polyacrylamide compound consisting of a homopolymer, copolymer, or crosspolymer containing one or more constituent units selected from 2-acrylamido-2-methylpropanesulfonic acid (hereinafter sometimes abbreviated as "AMPS"), acrylic acid, and derivatives thereof.

[0075] Specific examples of such polyacrylamide compounds include vinylpyrrolidone / 2-acrylamido-2-methylpropanesulfonic acid (salt) copolymer, dimethylacrylarnide / 2-acrylamido-2-methylpropanesulfonic acid (salt) copolymer, acrylamide / 2-acrylamiclo-2-methylpropanesulfonic acid copolymer, dimethylacrylainide / 2-acrylamido-2-methylpropanesulfonic acid crosspolymer crosslinked with methylenebisacrylamide, a mixture of polyacrylamide and sodium polyacrylate, sodium acrylate / 2-acrylamido-2-methylpropanesulfonic acid copolymer, hydroxyethyl acrylate / 2-acrylamido-2-methylpropanesulfonic acid (salt) copolymer, ammonium polyacrylate, polyacrylamide / ammonium acrylate copolymer, and acrylamide / sodium acrylate copolymer. However, the compounds are not limited thereto.

[0076] Preferred examples of the salt in the previous paragraph include alkali metal salts (such as calcium salts and magnesium salts), ammonium salts, and organic amine salts (such as monoethanolamine salts, diethanolamine salts, and triethanolamine salts). One or more of these polyacrylamide compounds may be used.

[0077] These polyacrylamide compounds may be synthesized or obtained as commercially available products. For example, vinylpyrrolidone / 2-acrylarnido-2-methylpropanesulfonic acid (salt) copolymer may be "Aristoflex AVC" (manufactured by Clariant), sodium alylate / 2-acrylamido-2-methylpropanesulfonic acid (salt) copolymer may be "Simulgel EG" (manufactured by Seppic) or "Simulgel EPG" (manufactured by Seppic), acrylamide / 2-acrylamido-2-methylpropanesulfonic acid sodium salt copolymer may be "Simulgel 600" (manufactured by Seppic), acrylamide / 2-acrylamido-2-methylpropanesulfonic acid (salt) may be "Sepigel 305" (manufactured by Seppic) or "Sepigel 501" (manufactured by Seppic), and 2-acrylamido-2-methylpropanesulfonic acid sodium homopolymer may be "1-lostacerin The polymer may be "AMPS" (manufactured by Clariant) or "Simulgel 800" (manufactured by Seppic), and dimethylacrylamide / 2-acrylamido-2-methylpropanesulfonic acid may be "SU-Polymer 0-1" (manufactured by Toho Chemical Industry Co.). In the present invention, it may be preferable to use these polymers called Sepigel and Simulgel together with polyacrylate crosspolymer-6.

[0078] The hydrophilic thickeners in the water-based cosmetic products of the present invention may be one or a combination of two or more.

[0079] emulsifier When the composition is in the form of an emulsion, it may contain an additional emulsifier, which may be nonionic, anionic, cationic or zwitterionic.

[0080] Other optional ingredients. The compositions herein may contain one or more optional ingredients known for use in topical cosmetic compositions, provided that the optional components do not unacceptably alter the desired benefits of the composition. In some cases, it may be desirable to select active ingredients that function through different biological pathways so that the cosmetic active ingredients do not interfere with each other. When the composition is in the form of an emulsion, the additional ingredients should not introduce instability (e.g., syneresis) into the emulsion. For example, it may be desirable to select optional ingredients that do not complex with other ingredients in the composition, particularly pH-sensitive ingredients such as vitamin B3 compounds, salicylates, and peptides.

[0081] The additional ingredients should be suitable for use in contact with human skin tissue without undue toxicity, incompatibility, instability, allergic reaction, etc. Optional ingredients, when present, may be included in an amount of about 0.001% to 50% by weight (e.g., 0.01% to 40%, 0.1% to 30%, 0.5% to 20%, or 1% to 10%) of the composition. Some non-limiting examples of additional ingredients include vitamins, minerals, peptides and peptide derivatives, sugar amines, sunscreens, oil control agents, microparticles, flavonoid compounds, hair growth regulators, antioxidants and / or antioxidant precursors, preservatives, protease inhibitors, tyrosinase inhibitors, anti-inflammatory agents, moisturizers, exfoliants, skin lightening agents, sunscreens, sunless tanning agents, lubricants, anti-acne agents, anti-cellulite agents, chelating agents, anti-wrinkle actives, anti-atrophy actives, phytosterols and / or plant hormones, N-acyl amino acid compounds, antibacterial agents, and antifungal agents. Some particularly suitable examples of additional ingredients include one or more skin care actives selected from the group consisting of vitamin B3 compounds (e.g., niacinamide), n-acyl amino acids (e.g., undecylenoyl phenylalanine), vitamin E compounds (e.g., tocopheryl acetate), palmitoylated dipeptides (e.g., palmitoyl-lysine-threonine), palmitoylated pentapeptides (e.g., palmitoyl-lysine-threonine-threonine-lysine-serine), vitamin A compounds (e.g., retinol and retinyl propionate), and combinations thereof.Other non-limiting examples of optional ingredients and / or skin care actives that may be suitable for use herein are described in U.S. Patent Application Publication Nos. 2002 / 0022040, 2003 / 0049212, 2004 / 0175347, 2006 / 0275237, 2007 / 0196344, 2008 / 0181956, 2008 / 0206373, 2010 / 0092408, 2008 / 0206373, 2010 / 0239510, 2010 / 0189669, 2010 Nos. 2011 / 0262025, 2011 / 0097286, U.S. Patent Application Publication Nos. 2012 / 0197016, 2012 / 0128683, 2012 / 0148515, 2012 / 0156146, and 2013 / 0022557, and U.S. Patent Nos. 5,939,082, 5,872,112, 6,492,326, 6,696,049, 6,524,598, 5,972,359, and 6,174,533.

[0082] Sucrose esters may be used herein. Such sucrose esters may be a blend of two or more sucrose esters, with the two or more sucrose esters present in a ratio of 1:10 to 1:1 (e.g., 1:7, 1:5, 1:3, or 1:2) of one sucrose ester to another. In some cases, the sucrose ester may be a blend of sucrose laurate and sucrose dilaurate, with the sucrose laurate being present at 50% to 80% by weight of the sucrose ester and the sucrose dilaurate being present at 20% to 45% by weight of the sucrose ester. Alternatively, the sucrose ester may be a blend of sucrose laurate, sucrose dilaurate, and sucrose trilaurate, with the sucrose dilaurate being present at 35% or more by weight of the sucrose ester. An example of a particularly suitable sucrose ester for use herein is sucrose dilaurate BC10034, available from BASF.

[0083] Method of using the cosmetic composition The method of use herein includes identifying a target area of ​​skin on a human in need of treatment and applying the composition to the target area of ​​skin for a treatment period. The target area of ​​skin can be on the surface of the face, such as the forehead, perioral area, chin, periorbital area, nose, and / or cheeks, or on another part of the body (e.g., hands, arms, legs, back, chest). The human in need of treatment is one whose skin shows signs of oxidative stress, such as fine lines, wrinkles, hyperpigmentation, uneven skin tone, and / or other visible skin features typically associated with aging. In some cases, the target area of ​​skin may not show visible signs of skin aging, but the user may still want to target such skin areas if they typically develop such problems as people age. In this way, the method may be used as a preventative measure to delay the onset of visible signs of skin aging.

[0084] The composition may be applied daily to the target area of ​​skin and, if desired, to surrounding skin at least once a day, twice a day, or more frequently during the treatment period. If applied twice a day, the first and second applications are separated by at least 1 to 12 hours. Typically, the composition is applied in the morning and / or at night before bedtime. The treatment period may last for at least one week (e.g., about 2, 4, 8, or even 12 weeks). In some cases, the treatment period may extend for several months (i.e., 3 to 12 months). In some cases, the composition may be applied at least once a day, or even twice a day, for the majority of days of the week (e.g., at least 4, 5, or 6 days a week) during a treatment period of at least 2, 4, 8, or 12 weeks.

[0085] The step of applying the composition can be carried out by topical application. With respect to the application of the composition, the terms "topical," "topical," or "topically" mean that the composition is delivered to a target area (e.g., wrinkles or fine lines) while minimizing delivery to skin surfaces where treatment is not desired. The composition may be applied to an area of ​​skin and gently massaged in. The form of the composition or dermatologically acceptable carrier should be selected to facilitate topical application. While certain embodiments herein contemplate applying the composition topically to an area, it will be understood that the compositions herein may be applied broadly to one or more skin surfaces. In certain embodiments, the compositions herein may be used as part of a multi-step cosmetic regimen, in which case the composition of the present invention may be applied before and / or after one or more other compositions.

[0086] combination 1. A cosmetic composition comprising, by weight: (a) about 1.5% to about 5% polyacrylate crosspolymer-6; (b) about 0.05% to about 5% of a nonionic surfactant having an HLB of about 10 to about 20; (c) an aqueous carrier; The composition satisfies the following conditions (i) to (iii): (i) the pH of the composition is between about 2.0 and about 5.0; (ii) the nonionic surfactant is a liquid at 20°C; and (iii) The cosmetic composition is substantially free of hydroxyethyl cellulose and xanthan gum. 2. A composition of the preceding character, wherein the composition comprises from about 1.8% to about 4%, preferably from about 2% to about 4%, of polyacrylate crosspolymer-6. 3. The composition of any of the preceding characteristics, wherein the weight ratio of polyacrylate crosspolymer-6 to nonionic surfactant is from about 15:1 to about 1:15, preferably from about 8:1 to about 1:8, more preferably from about 5:1 to about 1:5, and even more preferably from about 5:1 to about 1:3. [Example]

[0087] [Table 1]

[0088] [Table 2]

[0089] Evaluation of composition flowability The flowability of the composition is evaluated by the following method.

[0090] Ten panelists evaluated the products (blind) filled into 80g glass jars (consistent product weight and jar type). Panelists then rated "ease of getting the correct amount from the package" and "smooth flow when tilted / shaken" and gave scores of 1 to 5, with 1 being excellent and 5 being poor. For each example composition, an average score of the ten panelists was obtained. The average score of one example composition was then compared to the average score of the comparative example i as a control. The % improvement in score compared to the control is listed in the table above.

[0091] Examples 1 to 6 are examples of the present invention, which are suitable for use as oil-in-water emulsion cosmetic compositions in the form of essences, lotions, serums, and / or gel creams. Comparative Examples i and ii are comparative examples of the present invention. Comparative Example i does not contain any nonionic surfactant, and Comparative Example ii contains a lower HLB nonionic surfactant. The examples of the present invention provide improved fluidity of the compositions compared to the comparative examples.

[0092] Dimensions and values ​​disclosed herein should not be understood as being strictly limited to the exact numerical values ​​recited. Instead, unless otherwise indicated, each such dimension is intended to mean both the recited value and a functionally equivalent range surrounding that value. For example, a dimension disclosed as "40 mm" is intended to mean "about 40 mm."

[0093] All documents cited herein, including any cross-referenced or related patents or patent applications, and any patent application or patent to which this application claims priority or benefit, are incorporated herein by reference in their entirety, unless expressly excluded or otherwise limited. The citation of any document shall not be deemed to be prior art to any invention disclosed or claimed herein, or to teach, suggest, or disclose any such invention, either alone or in combination with any other reference or references. Furthermore, to the extent that any meaning or definition of a term in this document conflicts with any meaning or definition of the same term in a document incorporated by reference, the meaning or definition assigned to that term in this document shall control.

[0094] While particular embodiments of the present invention have been illustrated and described, it would be obvious to those skilled in the art that various other changes and modifications can be made without departing from the spirit and scope of the invention. It is therefore intended to cover in the appended claims all such changes and modifications that are within the scope of this invention.

Claims

1. 1. A cosmetic composition comprising, by weight: (a) about 1.5% to about 5% polyacrylate crosspolymer-6; (b) about 0.05% to about 5% of a nonionic surfactant having an HLB of about 10 to about 20; (c) an aqueous carrier; and Including, The composition satisfies the following conditions (i) to (iii): (i) the pH of the composition is between about 2.0 and about 5.0; (ii) the nonionic surfactant is a liquid at 20°C; and (iii) the composition is substantially free of hydroxyethyl cellulose and xanthan gum; A cosmetic composition that satisfies at least one of the above.

2. The composition of claim 1, wherein the composition comprises from about 1.8% to about 4% polyacrylate crosspolymer-6.

3. The composition of claim 2, wherein the composition comprises from about 2% to about 4% polyacrylate crosspolymer-6.

4. 10. The composition of claim 1, wherein the weight ratio of said polyacrylate crosspolymer-6 to said nonionic surfactant is from about 15:1 to about 1:

15.

5. 5. The composition of claim 4, wherein the weight ratio of said polyacrylate crosspolymer-6 to said nonionic surfactant is from about 8:1 to about 1:

8.

6. 6. The composition of claim 5, wherein the weight ratio of said polyacrylate crosspolymer-6 to said nonionic surfactant is from about 5:1 to about 1:

5.

7. 7. The composition of claim 6, wherein the weight ratio of said polyacrylate crosspolymer-6 to said nonionic surfactant is from about 5:1 to about 1:3.

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