Transparent sunscreen composition

Abstract

To provide a sunscreen composition.SOLUTION: The present invention provides a sunscreen composition comprising one or more oil soluble UV filters, at least about 20 wt.% of ethanol, about 13.5 wt.% or less of a low viscosity silicone having a viscosity of at least 20 centistokes, and at least about 23 wt.% of a super-low viscosity silicone having a viscosity up to about 15 centistokes, where the composition is anhydrous and transparent.SELECTED DRAWING: None

Description

[Background technology]

[0001] It is well known that long-term exposure to ultraviolet (UV) rays, especially from the sun, can cause photo-induced skin diseases and the formation of erythema, and can increase the risk of skin cancers such as melanoma.Exposure to UV rays also accelerates skin aging, such as the loss of skin elasticity and the development of wrinkles.For these reasons, sunscreen compositions are commonly used to provide photoprotection from the sun.

[0002] Sunscreen compositions often contain one or more organic sunscreens to provide broad-spectrum (UV-A and UV-B) protection. However, the high concentration of organic sunscreens required to provide such protection often imparts a greasy feel to the composition. One approach to reduce the greasy feel is to formulate sunscreens using an alcohol base. Alcohol-based sunscreen compositions can provide a desirable "transparent" visual appearance. On the other hand, if not formulated correctly, alcohol-based sunscreens may have poor phase and viscosity stability, resulting in a cloudy appearance and being unacceptable to consumers.

[0003] Silicones are also often used in sunscreen compositions to provide desirable non-greasy aesthetics. For example, U.S. Patent No. 8,236,287 relates to an oil-in-water sunscreen composition comprising at least 10% by weight of an organic UV filter, a water-insoluble C2-C8 silicone fluid, a branched fatty acid ester of a polybasic carboxylic acid, and at least 2% by weight of mineral microparticles having a starch coating applied to the surface thereof. The silicone fluid may be, for example, ethyl methicone, and is used in an amount of about 0.5 to about 10% of the composition.

[0004] It has now been found that a transparent and aesthetically pleasing alcohol-based sunscreen composition can be made by using UV filter, ethanol, and high dosage of silicone.This is surprising, because the binary mixture of silicone and ethanol on the one hand, and silicone and UV filter on the other hand, is typically incompatible.In addition, silicone comprises a combination of low viscosity and ultra-low viscosity silicone to reduce shine on skin.Furthermore, this composition can provide surprisingly high SPF, while being substantially or completely free of oxybenzone. Summary of the Invention [Means for solving the problem]

[0005] The present invention provides a sunscreen composition comprising one or more oil-soluble UV filters, at least about 20% by weight of ethanol, not more than about 13.5% by weight of a low viscosity silicone having a viscosity of at least 20 centistokes, and at least about 23% by weight of an ultra-low viscosity silicone having a viscosity of at most about 15 centistokes, wherein the composition is anhydrous and clear. DETAILED DESCRIPTION OF THE INVENTION

[0006] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. All publications, patent applications, patents, and other references mentioned herein are incorporated herein by reference.

[0007] Where appropriate, chemical substances are designated by their INCI name. Further information, including definitions, sources, and trade names, can be found in the appropriate INCI monograph in the International Cosmetic Ingredient Dictionary and Handbook, 16th Edition, published by the Personal Care Products Council, Washington, D.C., and also available via the Personal Care Products Council's On-Line INFOBASE (http: / / online.personalcarecouncl.org / jsp / Home.jsp).

[0008] As used herein, "topically apply" means to spray, rub, smear, or spread directly onto the skin or scalp, for example, by using the hand or an applicator such as a wipe, roller, or spray.

[0009] As used herein, "cosmetic," particularly as it relates to the appearance of tissue or skin, refers to a beautifying substance or preparation that maintains, restores, imparts, embellishes, or enhances a physically pleasing appearance or that gives the appearance of increased beauty or youthfulness.

[0010] As used herein, "sunscreen composition" refers to a formulation (e.g., a lotion, spray, gel, or other topical product) that absorbs and / or reflects a portion of the sun's ultraviolet (UV) radiation, thereby helping to protect against the negative effects of sun exposure, such as sunburn, premature aging, etc.

[0011] As used herein, a "cosmetically effective amount" means an amount of a physiologically active compound or composition sufficient to treat one or more conditions, but low enough to avoid serious side effects. The cosmetically effective amount of a compound or composition will vary depending on the condition being treated, the age and health of the end user, the severity of the condition being treated / prevented, the duration of treatment, the nature of other treatments, the particular compound or product / composition used, the cosmetically acceptable carrier utilized, and similar factors.

[0012] As used herein, "cosmetically acceptable" means that the ingredient it describes is suitable for use in contact with tissue (e.g., skin) without undue toxicity, incompatibility, instability, irritation, allergic reaction, etc.

[0013] As used herein, a "cosmetically acceptable active agent" is a compound (synthetic or natural) that has a cosmetic or therapeutic effect on the skin.

[0014] As used herein, "treat or treating" refers to the alleviation, reduction, prevention, amelioration, or elimination of the presence or symptoms of a condition or disorder.

[0015] As used herein, "phase stability" means maintaining interfacial or suspension stability for at least two weeks at temperatures of 25°C, 40°C, and 50°C, respectively. "Interfacial stability" refers to the stability against coalescence and coarsening of discontinuous phases in compositions having two or more phases. "Suspension stability" refers to the stability against creaming and / or settling of discontinuous phases, e.g., solids, suspended in a continuous phase.

[0016] By "transparent" is meant free of undissolved particles and transparent as determined by visual inspection using a 20 mL glass scintillation vial.

[0017] As used herein, "substantially free" means that the referenced ingredient is not directly and intentionally added to the formulation. Preferably, "substantially free" means containing less than about 1% of the ingredient. More preferably, "substantially free" means containing less than about 0.5% of the ingredient. Even more preferably, "substantially free" means containing less than about 0.1% by weight of the ingredient. The composition may be completely free of the ingredient, i.e., may not contain any ingredient at all.

[0018] Unless otherwise specified, percentages or concentrations refer to weight percentages or concentrations (i.e., %(W / W)). Unless otherwise specified, all ranges are inclusive of their endpoints, for example, "4 to 9" includes the endpoints 4 and 9.

[0019] UV filter The composition comprises one or more oil-soluble UV filters.

[0020] As used herein, "organic UV filter" means organic molecules capable of absorbing ultraviolet (UV) light, including (i) aromatic compounds conjugated with carbonyl moieties substituted at the ortho- or para-position of the aromatic ring and (ii) polymers made of organic chromophores attached to the polymer chain, both of which block or absorb UV light.

[0021] Conventional organic UV filters are aromatic small molecules with molecular weight values ​​of <900 g / mol. Examples of non-polymeric organic UV filters include methoxycinnamate derivatives (e.g., octyl methoxycinnamate and isoamyl methoxycinnamate), camphor derivatives (e.g., 4-methylbenzylidene camphor, camphor benzalkonium methosulfate, and terephthalylidene dicamphorsulfonic acid), salicylic acid derivatives (e.g., octyl salicylate, ethylhexyl salicylate, homosalate), benzone derivatives (e.g., dioxybenzone and oxybenzone), benzoic acid derivatives (e.g., aminobenzoic acid and octyldimethyl paraaminobenzoic acid), octocrylene, and the like. and other β,β-diphenylacrylates, dioctyl butamido triazone, octyl triazone, avobenzone (butyl methoxydibenzoylmethane), menthyl anthranilate, triazone derivatives (e.g., ethylhexyl triazone (Uvinul® T150)), diethylhexyl butamido triazone (UVASorb® HEB), bis-ethylhexyloxyphenol methoxyphenyl triazine (Tinosorb® S), benzoate derivatives (e.g., diethylamino hydroxybenzoyl hexyl benzoate (Uvinul® A) Examples of suitable hydroxybenzoates include, but are not limited to, benzotriazole derivatives (e.g., drometrizole trisiloxane (Mexoryl® XL)), methylene bis-benzotriazolyl tetramethylbutylphenol (Tinosorb® M), tris-biphenyl triazine, (2-{4-[2-(4-diethylamino-2-hydroxy-benzoyl)-benzoyl]-piperazine-1-carbonyl}-phenyl)-(4-diethylamino-2-hydroxy-phenyl)-methanone, merocyanine derivatives, bis(butyl benzoate)diaminotriazine aminopropyl siloxane, and bis-ethylhexyloxyphenol methoxyphenyl triazine encapsulated in a polymer matrix.

[0022] Polymeric organic UV filters are polymers made of organic chromophores attached to polymer chains, e.g., polysiloxane chains having an average molecular weight of, for example, >6000 Daltons. Examples of such polysiloxane UV filters include, but are not limited to, Parsol® SLX and Polysilicone-15. These polysiloxanes are suitable for use in the UVB (λ) region of the spectrum. max = 312 nm) and are typically combined with UVA filters to achieve broad spectrum protection.

[0023] The table below lists various commercially available organic UV filters.

[0024] [Table 1-1]

[0025] [Table 1-2]

[0026] The sunscreen composition may comprise at least about 10% by weight of one or more oil-soluble UV filters, based on the total weight of the composition. The composition may comprise from about 15 to about 35% by weight of one or more oil-soluble UV filters, based on the total weight of the composition. The composition may comprise at least about 21% by weight of one or more oil-soluble filters, based on the total weight of the composition, particularly when a transparent composition is desired.

[0027] The oil-soluble UV filter may be selected from one or more of homosalate, octisalate, avobenzone, octocrylene.

[0028] The oil-soluble UV filter may be a mixture of homosalate, octisalate, avobenzone, and octocrylene. For example, the sunscreen composition may contain, based on the total weight of the composition, about 8 to about 15% by weight of homosalate, about 4 to about 5% by weight of octisalate, about 2 to about 3% by weight of avobenzone, and about 7 to about 10% by weight of octocrylene.

[0029] The sunscreen composition may be substantially free of oxybenzone. The sunscreen composition may be completely free of oxybenzone.

[0030] The composition may optionally contain one or more UV-blocking agents, which are compounds that reflect, absorb, or scatter ultraviolet radiation. When present in a sunscreen composition, they reflect ultraviolet, visible, and infrared radiation to enhance sun protection. UV-blocking agents are typically inorganic metal oxides, examples of which include titanium dioxide, zinc oxide, and certain other transition metal oxides. Such UV-blocking agents are typically solid particles in micronized or nanosized form, with diameters of about 0.01 μm to about 10 μm.

[0031] Examples include zinc oxide, titanium dioxide, doped zinc oxide, doped titanium dioxide, and other transition metal oxides. Doped metal oxides contain dopants, which are trace elements of other metal atoms incorporated into the crystal lattice of the primary metal oxide to modify its electrical or optical properties, and may include aluminum, manganese, and iron.

[0032] In another embodiment, the metal oxide comprises a coated particle. The coating may comprise, for example, a hydrophobic material such as an alkylsiloxane (e.g., triethoxycaprylylsilane), a silicone, or a metal salt of a fatty acid.

[0033] In one embodiment, the metal oxide comprises particles having a diameter of about 0.01 μm to about 10 μm.

[0034] In one embodiment, the inorganic sunscreen may further comprise particulate doped zinc oxide, as described in U.S. Patent Nos. 9,144,535, 9,144,536, and WO 2008117017, which are incorporated herein by reference in their entireties. Such particulate zinc oxide comprises low concentrations of specific dopants in specific ratios to provide improved performance with respect to absorption in the UVA portion of the electromagnetic spectrum. The particulate zinc oxide comprises a cationic moiety, which in turn comprises about 99% or more by weight of zinc moieties. The cationic moiety further comprises first and second dopant moieties comprising metals such as manganese, iron, aluminum, and copper. The first and second dopant moieties may be present in an amount of about 0.1% to about 0.75% by weight of the cationic moiety. The particulate doped zinc oxide may further comprise small concentrations of additional metal cations, such as cations of alkali metals, alkaline earth metals, other transition metals, and cations of metals such as gallium, germanium, gallium, indium, tin, antimony, thallium, lead, bismuth, and polonium.

[0035] These doped zinc oxides can be made by a variety of methods, such as reducing an oxide ore using carbon or other suitable reducing agents, followed by reoxidation. Other suitable methods include wet chemical methods. One example of a wet chemical method involves mixing alkaline salt solutions of various cations and precipitating ZnO by lowering the pH using an acid such as oxalic or formic acid. A particularly suitable wet chemical method is the so-called "sol-gel" method.

[0036] SPF Sun Protection Factor (SPF) can be tested using the following in vitro SPF test method: The baseline transmittance of a PMMA plate (substrate, available from Helioscience, Marseille, France) is measured for UV absorbance using a calibrated Labsphere® UV-10005 UV Transmittance Analyzer or Labsphere® UV-2000S UV Transmittance Analyzer (Labsphere, North Sutton, NH, USA). A uniform thin layer of approximately 1.3 mg / cm2 is then applied to the PMMA plate by rubbing with the operator's finger. 2 The test sample is applied to a PMMA plate using an application density of 1000 ppm. The sample is allowed to dry for 15 minutes and then measured for UV absorbance in the same manner. The absorbance readings are used to calculate the SPF as known in the art using the following equation:

[0037]

number

[0038] In one embodiment, the composition has an SPF of at least about 15 as measured by the in vitro SPF test method. In another embodiment, the composition has an SPF of at least about 25 as measured by the in vitro SPF test method.

[0039] The composition may include one or more SPF boosters, such as a styrene / acrylate copolymer. A commercially available styrene / acrylate copolymer is Sunsphere Powder manufactured by Dow Chemical.

[0040] Film-forming agents Film-forming agent is generally a polymer that, when dissolved in the composition, forms a continuous or semi-continuous film when the composition is spread on, for example, a smooth glass, and allows the liquid vehicle to evaporate.Therefore, the polymer should dry on the glass mainly continuously, rather than forming a plurality of separate island-like structures.Generally, the film formed by applying the sunscreen composition on skin according to the present invention has an average thickness of less than about 100 μm, for example, less than about 50 μm.

[0041] Suitable film-forming polymers include natural polymers such as polysaccharides or proteins, and synthetic polymers such as polyesters, polyacrylics, polyurethanes, vinyl polymers, polysulfonates, polyureas, polyoxazolines, and the like. Specific examples of film-forming polymers include acrylic homopolymers or copolymers having hydrophobic groups, such as acrylate / octylacrylamide copolymers, including DERMACRYL 79, available from Akzo Chemical (Bridgewater, NJ); acrylate / dimethicone acrylate copolymers, available from Shin-Etsu Chemical Co., Ltd. as X-22-8247D; hydrogenated dimer dilinoyl / dimethyl carbonate copolymers, available from BASF Corp. as COSMEDIA DC; copolymers of vinylpyrrolidone and long-chain α-olefins, such as those available from Ashland Specialty Ingredients as GANEX V220; vinylpyrrolidone / tricotanyl copolymers, also available from Ashland as GANEX WP660; and water-dispersible polyesters, including sulfopolyesters, such as those available from Eastman Chemical as EASTMAN AQ 38S. In certain embodiments, the film-forming polymer is water-insoluble but becomes soluble upon exposure to alkali to facilitate removal from the skin upon washing with soap.

[0042] The total amount of film-forming agents in the composition may range from about 0.25% to about 15% by weight of the composition, based on the total weight of the composition. The total amount of film-forming agents in the composition may range from about 0.5% to about 10% by weight of the composition, based on the total weight of the composition. The total amount of film-forming agents in the composition may range from about 1% to about 5% by weight of the composition, based on the total weight of the composition.

[0043] Low Viscosity Silicone The composition contains one or more low viscosity silicones. Silicones, also known as polysiloxanes, are polymers made up of repeating siloxane units, chains of alternating silicon and oxygen atoms combined with carbon, hydrogen, and sometimes other elements.

[0044] The low-viscosity silicone must have a minimum viscosity that will not evaporate in an open system. The low-viscosity silicone may have a viscosity of at least 20 centistokes. The low-viscosity silicone may have a viscosity of at least 50 centistokes. The low-viscosity silicone may have a viscosity of at least 100 centistokes.

[0045] As used herein, "viscosity" means kinematic viscosity, which is a measure of the volumetric flow rate of a liquid defined in Stokes (St). Centistokes, cSt = 0.01 St = 1 mm 2 / sec. Viscosity can be determined using ASTM Designation: D4283-98 - Standard Test Method for Viscosity of Silicone Fluids. This test method recommends the use of an Ostwald viscometer (up to 5,000 cst), an Ubbelohde viscometer (up to 100,000 cst), or a Cannon Fenski viscometer (up to 5,000 cst) when determining kinematic viscosity.

[0046] The low viscosity silicone may be a dimethicone having a viscosity of at least 20 centistokes. The low viscosity silicone may be a dimethicone having a viscosity of at least 50 centistokes. The low viscosity silicone may be a dimethicone having a viscosity of at least 100 centistokes.

[0047] Dimethicones having viscosities of 20, 50, or 100 centistokes are commercially available, for example, from Dow Chemical Company (Midland, MI).

[0048] The amount of low viscosity silicone in the composition may range up to about 13.5% by weight of the total weight of the composition. The amount of low viscosity silicone in the composition may range from about 1 to about 13.5% by weight, based on the total weight of the composition.

[0049] Ultra-low viscosity silicone Ultra-low viscosity silicones are characterized by their fast evaporation rate. Also, the silicone or polysiloxane has a viscosity of up to about 15 centistokes. Ultra-low viscosity silicones may have a viscosity of up to about 6 centistokes. Ultra-low viscosity silicones may have a viscosity of up to about 2 centistokes. The viscosity is a kinematic viscosity and can be measured as described above.

[0050] The ultra-low viscosity silicone may be linear rather than cyclic.

[0051] The ultra-low viscosity silicone may be 2 centistokes dimethicone and / or trisiloxane, which is commercially available from Dow Chemical Company (Midland, MI).

[0052] The ultra-low viscosity silicone may be ethyl methicone having a viscosity of 6 to 15 centistokes. Such ethyl methicone is commercially available from Siltech Corp (Toronto, Canada).

[0053] The amount of ultra-low viscosity silicone in the composition can be at least about 23 wt.% of the total weight of the composition. The amount of ultra-low viscosity silicone in the composition can range from about 23 to about 58 wt.% based on the total weight of the composition.

[0054] ethanol The sunscreen composition is anhydrous. The composition may be substantially free of water. The composition may be completely free of water.

[0055] The sunscreen composition comprises ethanol.

[0056] The sunscreen composition may comprise at least about 20% ethanol by weight. The sunscreen composition may comprise at least about 25% ethanol by weight. The sunscreen composition may comprise at least about 30% ethanol by weight.

[0057] Topical Compositions The compositions can be prepared using mixing and blending techniques well known in the sunscreen and cosmetic arts.

[0058] The composition may be combined with a "cosmetically acceptable carrier for topical application," i.e., a carrier for topical use that may contain other ingredients dispersed or dissolved therein and that has acceptable properties that make it safe for topical use.

[0059] Cosmetically acceptable carriers for topical application may optionally contain a wide variety of additional oil-soluble and / or oil-dispersible materials conventionally used in compositions for use on the skin, at concentrations established in the art, such as surfactants, emulsifiers, pearlizing or opacifying agents, thickeners, emollients, conditioners, humectants, chelating agents, exfoliating agents, preservatives, pH adjusters, and additives that enhance the appearance, feel, or scent of the composition, such as colorants, fragrances, texture modifiers, and the like.

[0060] The composition may optionally contain additional film-forming agents, such as natural polymers such as polysaccharides or proteins, as well as synthetic polymers such as other polyesters, polyacrylics, polyurethanes, vinyl polymers, polysulfonates, polyureas, polyoxazolines, etc. Specific examples include acrylate / dimethicone acrylate copolymer (available commercially from Shin-Etsu Chemical Co., Ltd. as X-22-8247D); hydrogenated dimer dilinol / dimethyl carbonate copolymer (available commercially from BASF Corp. as COSMEDIA DC); copolymers of vinylpyrrolidone and long-chain α-olefins (such as those available commercially as GANEX V220 from Ashland Specialty Ingredients); and vinylpyrrolidone / tricotanyl copolymer (also available commercially from Ashland as GANEX WP660).

[0061] Suitable emollients include mineral oil, petrolatum, vegetable oils (e.g., triglycerides such as caprylic / capric triglyceride), waxes and mixtures of other fatty acid esters (including, but not limited to, esters such as isopropyl palmitate, isopropyl myristate, diisopropyl adipate, dibutyl adipate, dicaprylyl carbonate, C12-C15 alkyl benzoates), silicone oils such as dimethicone, and alkanes such as isohexadecane.

[0062] In certain embodiments, the composition includes a pigment suitable for providing color or hiding power. The pigment may be suitable for use in color cosmetic products, such as compositions for application to hair, nails, and / or skin, particularly the face. Color cosmetic compositions include, but are not limited to, foundations, concealers, primers, blushers, mascaras, eye shadows, eyeliners, lipsticks, nail polish, and tinted moisturizers. Pigments suitable for providing color or hiding power may be composed of iron oxides (including red and yellow iron oxides), titanium dioxide, ultramarine, and chromium or chromium hydroxide pigments, and mixtures thereof. The pigment may be a lake pigment precipitated on an inert binder, such as an insoluble salt, or may be an organic dye, such as azo, indigoid, triphenylmethane, anthraquinone, and xanthine dyes, such as those referred to as D&C and FD&C blues, browns, greens, oranges, reds, and yellows. Examples of lake pigments include Red #6, Red #7, Yellow #5, Violet #2, and Blue #1. The pigment may be an interference pigment. Examples of interference pigments include those containing mica substrates, bismuth oxychloride substrates, and silica substrates, such as the mica / bismuth oxychloride / iron oxide pigments commercially available from BASF as CHROMALITE pigments, titanium dioxide and / or iron oxide coated on mica commercially available from BASF as FLAMENCO pigments, mica / titanium dioxide / iron oxide pigments including KTZ pigments commercially available from Kobo products, BASF's CELLINI pearl pigments, and borosilicate-containing pigments such as BASF's REFLECKS pigments.

[0063] In one embodiment, the composition includes a humectant, such as butylene glycol or glycerin. The composition may, for example, include at least about 1.0% by weight of a humectant.

[0064] The compositions may further comprise one or more other cosmetically acceptable active agents including, for example, anti-acne agents, shine control agents, antibacterial agents, anti-inflammatory agents, antifungal agents, antiparasitic agents, topical analgesics, antioxidants, keratolytic agents, moisturizers, nutrients, vitamins, energy boosters, antiperspirants, skin astringents, deodorants, stabilizers, anti-skin hardening agents, and agents for conditioning the skin.

[0065] The amount of other cosmetic active agents may range from about 0.001% to about 20% by weight of the composition, such as from about 0.005% to about 10% by weight of the composition, such as from about 0.01% to about 5% by weight of the composition.

[0066] Cosmetically acceptable active agents may be selected from, for example, D-panthenol, carotenoids, ceramides, polyunsaturated fatty acids, essential fatty acids, enzymes such as laccase, enzyme inhibitors, minerals, steroids such as hydrocortisone, 2-dimethylaminoethanol, copper salts such as copper chloride; peptides such as argireline, syn-ake, and those containing copper; coenzyme Q10, amino acids such as proline, vitamins, lactobionic acid, acetyl coenzyme A, niacin, riboflavin, thiamine, ribose, electron transporters such as NADH and FADH2, natural extracts such as aloe vera, feverfew, oat, dill, blackberry, paulownia, Pichia anomala, and chicory; resorcinols such as 4-hexylresorcinol; curcuminoids; sugar amines such as N-acetylglucosamine; and derivatives and mixtures thereof.

[0067] Examples of vitamins include, but are not limited to, vitamin A, B vitamins (e.g., vitamin B3, vitamin B5, and vitamin B12), vitamin C, vitamin K, and different forms of vitamin E, such as alpha, beta, gamma, or delta tocopherol, or mixtures and derivatives thereof.

[0068] Examples of antioxidants include, but are not limited to, water-soluble antioxidants such as sulfhydryl compounds and their derivatives (e.g., sodium metabisulfite and N-acetylcysteine), lipoic acid and dihydrolipoic acid, resveratrol, lactoferrin, and ascorbic acid and ascorbic acid derivatives (e.g., ascorbyl palmitate and ascorbyl polypeptides). Oil-soluble antioxidants suitable for use in the compositions of the present invention include, but are not limited to, butylated hydroxytoluene, retinoids (e.g., retinol and retinyl palmitate), tocopherols (e.g., tocopherol acetate), tocotrienols, and ubiquinone. Natural extracts containing antioxidants suitable for use in the compositions of the present invention include, but are not limited to, extracts containing flavonoids and isoflavonoids, and their derivatives (e.g., genistein and daidzein), extracts containing resveratrol, etc. Examples of such natural extracts include grape seeds, green tea, pine bark, and propolis.

[0069] Sprayability The composition of the present invention is sprayable. As used herein, "sprayable" means that when actuated manually or through pressurized release from a dispensing mechanism, such as a bottle or aerosol can with a pump spray nozzle, the composition distributes evenly over an area of ​​a defined shape (e.g., circle, ring) and size, creating a reproducible spray pattern. The composition may be sprayable without the use of a propellant, i.e., in a non-aerosol form.

[0070] The present invention is further illustrated by the following non-limiting examples. [Example]

[0071] A series of compositions were prepared using 30% by weight ethanol, dimethicone (20 cst), dimethicone (and) trisiloxane, and other ingredients as shown in Table 1. Compositions 1-6 were in accordance with the invention, and Compositions A and B were comparative.

[0072] [Table 2]

[0073] Another series of compositions was made using 30% by weight ethanol, dimethicone (20 cst), ethyl methicone, and other ingredients as shown in Table 2. Compositions 7-9 were in accordance with the invention, and compositions C-G were comparative.

[0074] [Table 3]

[0075] The compositions were prepared as follows.

[0076] Main Phase: Ethanol, octisalate, homosalate, and octocrylene were added to the main vessel and mixing was commenced at 300 rpm. While mixing, the acrylates / octylacrylamide copolymer and avobenzone were added and mixed until uniform. Once uniform, the dimethicone, acrylates / dimethicone copolymer, dimethicone (and) trisiloxane, or ethylmethicone (if appropriate), diisopropyl adipate, and tocopheryl acetate (if appropriate) were added and mixing was continued. Once clear, dimethicone (20 cst) was added with continued mixing.

[0077] The compositions were tested for clarity. Clarity was determined by visual inspection using a 20 mL glass scintillation vial. The compositions according to the invention were clear and free of undissolved particles. The comparative compositions were cloudy and unstable.

[0078] The results are shown in Table 3.

[0079] [Table 4]

[0080] Compositions 1-6 according to the present invention, containing up to 13.5 wt.% dimethicone (20 cst) and at least 23.3 wt.% dimethicone and trisiloxane combinations according to the present invention, were clear. However, comparative compositions A and B, containing more than 13.5 wt.% dimethicone (20 cst), were unstable and cloudy.

[0081] Similarly, compositions 7-9 according to the present invention, which contained a combination of up to 4% by weight of dimethicone (20 cst) and at least 32% by weight of ethylmethicone, were also clear. However, when the concentration of dimethicone (20 cst) exceeded 4%, the compositions became cloudy, as shown by comparative compositions C-G. [Example]

[0082] A series of compositions were made using 30% by weight ethanol, dimethicone (50 cst), dimethicone (and) either trisiloxane or ethylmethicone, and other ingredients as shown in Table 4. Compositions 10-14 were in accordance with the invention, and compositions H-J were comparative.

[0083] [Table 5]

[0084] The compositions were prepared as follows.

[0085] Main Phase: Ethanol, octisalate, homosalate, and octocrylene were added to the main vessel and mixing was commenced at 300 rpm. While mixing, the acrylates / octylacrylamide copolymer and avobenzone were added and mixed until uniform. Once uniform, the dimethicone, acrylates / dimethicone copolymer, dimethicone (and) trisiloxane, or ethylmethicone (if appropriate), diisopropyl adipate were added and mixing was continued. Once clear, dimethicone (50 cst) was added with continued mixing.

[0086] The compositions were tested for clarity as described in Example 1.

[0087] The results are shown in Table 5.

[0088] [Table 6]

[0089] Compositions 10 to 13 according to the invention, containing up to 9% by weight of dimethicone (50 cst) and 31% by weight of a combination of dimethicone (and) trisiloxane according to the invention, were clear.

[0090] Similarly, composition 14 according to the invention, which contained a combination of 2.5% by weight of dimethicone (50 cst) and 31% by weight of ethylmethicone, was also clear.

[0091] However, comparative composition H, which contained 10 wt% dimethicone (50 cst) and 31 wt% dimethicone and trisiloxane, was cloudy. Comparative compositions HH-J, which contained 31 wt% ethylmethicone with 3, 4, and 5 wt% dimethicone (50 cst), respectively, were also cloudy. [Example]

[0092] A series of compositions were made using 30% by weight ethanol, dimethicone (100 cst), dimethicone (and) either trisiloxane or ethylmethicone, and other ingredients as shown in Table 6. Composition 15 was in accordance with the invention, and compositions K-S were comparative.

[0093] [Table 7]

[0094] The compositions were prepared as follows.

[0095] Main Phase: Ethanol, octisalate, homosalate, and octocrylene were added to the main vessel and mixing was commenced at 300 rpm. While mixing, the acrylates / octylacrylamide copolymer and avobenzone were added and mixed until uniform. Once uniform, the dimethicone, acrylates / dimethicone copolymer, dimethicone (and) trisiloxane, or ethylmethicone (if appropriate), diisopropyl adipate, and tocopheryl acetate (if appropriate) were added and mixing was continued. Once clear, dimethicone (100 cst) was added with continued mixing.

[0096] The compositions were tested for clarity as described in Example 1.

[0097] The results are shown in Table 7.

[0098] [Table 8]

[0099] Only composition 15 according to the invention, containing 31% by weight of dimethicone (and) trisiloxane and dimethicone (100 cst), was clear. [Example]

[0100] A series of compositions were made using 25% by weight ethanol, dimethicone (20 cst), dimethicone and either trisiloxane or ethylmethicone, and other ingredients as shown in Table 8. Compositions 16-18 were in accordance with the invention, and compositions T-W were comparative.

[0101] [Table 9]

[0102] The compositions were prepared as follows.

[0103] Main Phase: Ethanol, octisalate, homosalate, and octocrylene were added to the main vessel and mixing was commenced at 300 rpm. While mixing, the acrylates / octylacrylamide copolymer and avobenzone were added and mixed until uniform. Once uniform, the dimethicone, acrylates / dimethicone copolymer, dimethicone (and) trisiloxane, or ethylmethicone (if appropriate), diisopropyl adipate, and tocopheryl acetate (if appropriate) were added and mixing was continued. Once clear, dimethicone (20 cst) was added with continued mixing.

[0104] The compositions were tested for clarity as described in Example 1.

[0105] The results are shown in Table 9.

[0106] [Table 10]

[0107] As shown in Table 9, the combination of 25% ethanol and dimethicone (and) trisiloxane can solubilize up to 7% by weight of dimethicone (20 cst), so the sunscreen compositions remain clear and exhibit good aesthetics, as shown by compositions 16-18. When the concentration of dimethicone (20 cst) exceeded 7%, the sunscreen formulations became unstable and cloudy, as shown by compositions T-V. The combination of 25% ethanol and ethylmethicone was unable to solubilize 5% by weight of dimethicone (20 cst), as shown by composition W. [Example]

[0108] A series of compositions were made using 20 or 25% by weight of ethanol, dimethicone (20, 50 or 100 cst), dimethicone (and) trisiloxane, and other ingredients as shown in Table 10. Compositions 19-21 were in accordance with the invention, and compositions X-ZZ were comparative.

[0109] [Table 11]

[0110] The compositions were prepared as follows.

[0111] Main Phase: Ethanol, octisalate, homosalate, and octocrylene were added to the main vessel and mixing was commenced at 300 rpm. While mixing, the acrylates / octylacrylamide copolymer and avobenzone were added and mixed until uniform. Once uniform, the dimethicone, acrylates / dimethicone copolymer, dimethicone (and) trisiloxane, diisopropyl adipate, and tocopheryl acetate (if appropriate) were added and mixing was continued. Once clear, the appropriate dimethicone (20 cst, 50 cst, or 100 cst) was added with continued mixing.

[0112] The compositions were tested for clarity as described in Example 1.

[0113] The results are shown in Table 11.

[0114] [Table 12]

[0115] As shown in Table 11, the combination of 25% ethanol and dimethicone and trisiloxane was able to solubilize up to 5% by weight of dimethicone (50 cst) and up to 4% by weight of dimethicone (100 cst), resulting in sunscreen compositions that remained clear and exhibited good aesthetics, as shown in Compositions 19-21. When the concentration of dimethicone (50 cst) exceeded 6% or the concentration of dimethicone (100 cst) exceeded 5%, the sunscreen formulations became unstable and cloudy, as shown in Compositions X and Y. Furthermore, the combination of 20% ethanol and dimethicone and trisiloxane was unable to solubilize 1% by weight of dimethicone (20 cst), as shown in Compositions Z-ZZ.

[0116] [Embodiment] (1) A sunscreen composition comprising one or more oil-soluble UV filters, at least about 20% by weight of ethanol, not more than about 13.5% by weight of a low viscosity silicone having a viscosity of at least 20 centistokes, and at least about 23% by weight of an ultra-low viscosity silicone having a viscosity of at most about 15 centistokes, wherein the composition is anhydrous and transparent. (2) The composition of embodiment 1, wherein the UV filter is selected from the group consisting of homosalate, octisalate, avobenzone, octocrylene, and mixtures thereof. (3) The composition of claim 1, wherein the low viscosity silicone is a dimethicone having a viscosity of at least 20 centistokes. (4) The composition of claim 1, wherein the ultra-low viscosity silicone is 2 centistokes dimethicone and / or trisiloxane. (5) The composition of claim 1, wherein the ultra-low viscosity silicone is ethylmethicone having a viscosity of 6 to 15 centistokes.

[0117] (6) The composition of embodiment 1, which is substantially free of oxybenzone.

Claims

1. 1. A sunscreen composition comprising: 10% to 35% by weight of one or more oil-soluble UV filters; 20% to 30% by weight of ethanol; a low viscosity silicone; and 23% to 39.3% by weight of an ultra-low viscosity silicone having a viscosity of up to 15 centistokes, the low viscosity silicone is 1% to 7% by weight of the composition of a dimethicone having a viscosity of 20 centistokes, and / or 1% to 5% by weight of the composition of a dimethicone having a viscosity of 20 to 50 centistokes, and / or 1 to 2.5% by weight of the composition of a dimethicone having a viscosity of 20 to 100 centistokes; the ultra-low viscosity silicone is dimethicone and / or trisiloxane; The composition is anhydrous and clear.

2. 10. The composition of claim 1, wherein the ultra-low viscosity silicone has a viscosity of up to 6 centistokes.

3. 3. The composition of claim 2, wherein the ultra-low viscosity silicone has a viscosity of up to 2 centistokes.

4. 4. The composition of claim 3, wherein the ultra-low viscosity silicone is 2 centistokes dimethicone and / or trisiloxane.

5. 10. The composition of claim 1, wherein the one or more oil-soluble UV filters are selected from the group consisting of homosalate, octisalate, avobenzone, octocrylene, and mixtures thereof.

6. 6. The composition of claim 5, wherein the one or more oil-soluble UV filters is a mixture comprising homosalate, octisalate, avobenzone, and octocrylene.

7. 10. The composition of claim 1, which is oxybenzone-free.

8. 10. The composition of claim 1 comprising homosalate, octisalate, avobenzone, octocrylene, 30% by weight of ethanol, 5% by weight of dimethicone having a viscosity of 20 centistokes, and 31.8% by weight of dimethicone having a viscosity of 2 centistokes (and) trisiloxane.

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