Sunscreen Composition

Abstract

The present invention relates to sunscreen compositions containing bis-ethylhexyloxyphenol methoxyphenyl triazine (BEMT), diethylhexyl sebacate, and one or more alkanediols, provided that the sunscreen compositions are free of ethylhexyl methoxycinnamate, and exhibit reduced soaping effects and therefore a more appealing skin feel and appearance.

Description

Detailed Description of the Invention

[0001] The present invention relates to sunscreen compositions containing bis-ethylhexyloxyphenol methoxyphenyl triazine (BEMT), diethylhexyl sebacate, and one or more alkanediols, provided that the sunscreen compositions are free of ethylhexyl methoxycinnamate. The compositions exhibit reduced soaping effects and therefore a more appealing skin feel and appearance.

[0002] Sunscreens should be effective and safe. In this regard, sunscreens contain different UVB and UVA filters. Among these UV filters, bis-ethylhexyloxyphenol methoxyphenyl triazine (BEMT) is particularly advantageous because it is a broad-spectrum UV absorber that absorbs both UVB and UVA rays and is highly photostable. Overall, based on the maximum concentration permitted by European law, it is currently considered to be the most effective UV absorber available, as measured by SPF. However, as a solid UV filter, bis-ethylhexyloxyphenol methoxyphenyl triazine needs to be efficiently solubilized to be incorporated into sunscreen compositions and avoid recrystallization therein during storage. One effective solvent for bis-ethylhexyloxyphenol methoxyphenyl triazine is ethylhexyl methoxycinnamate. Because this compound is also an effective UV-B filter, these two components are often used together in sunscreen compositions.

[0003] Sunscreens in emulsion form often exhibit a soaping effect, i.e., they tend to produce a whitish / blue residue on the skin.

[0004] Simply put, soaping is the incorporation of air into an emulsion through exposure to air and agitation. For example, when a lotion is vigorously rubbed onto the skin, a thin film of tiny bubbles appears as a white film. Over time, the emulsion becomes unstable due to evaporation, and the bubbles collapse. Although the initial soaping effect disappears, it is generally undesirable in lotions and creams.

[0005] In order to reduce or even prevent the above-mentioned effects, consumers tend to reduce the amount of sunscreen they use, but this also reduces consumer protection.The harmful effects of UV rays on skin are well known.Therefore, it is important for the industry to provide solutions to these kinds of problems, so as to help consumers apply enough sunscreen to provide adequate protection.

[0006] For many years, formulators have understood that silicones such as dimethicone provide anti-foaming benefits. As the cosmetic market evolves toward more environmentally friendly options, the use of certain silicones has come under increasing scrutiny regarding their environmental impact in both production and waste streams. Thus, faced with the new need to control soaping without using silicones, formulators are seeking alternative solutions to reduce the unwanted soaping effect.

[0007] EP 3714865 is concerned with the solubilisation of organic UV filters such as BEMT, but not with the soaping of cosmetic compositions containing BEMT, which is the technical problem underlying the present invention.

[0008] It has surprisingly been found that the replacement of ethylhexyl methoxycinnamate (EMC) with diethylhexyl sebacate as a solvent for bis-ethylhexyloxyphenol methoxyphenyl triazine in compositions further comprising one or more alkanediols surprisingly reduces the soaping effect of such cosmetic compositions, thus resulting in a more attractive skin feel and appearance.

[0009] Thus, in a first embodiment, the present invention provides a sunscreen composition in the form of an emulsion comprising bis-ethylhexyloxyphenol methoxyphenyl triazine (BEMT), diethylhexyl sebacate, and one or more alkanediols, provided that the composition is free of (i.e., does not contain) ethylhexyl methoxycinnamate.

[0010] Another subject of the present invention is a method for reducing the soaping effect of a sunscreen composition containing bis-ethylhexyloxyphenol methoxyphenyl triazine and ethylhexyl methoxycinnamate, comprising the steps of replacing the total amount of ethylhexyl methoxycinnamate in the sunscreen composition with diethylhexyl sebacate, and optionally evaluating the effect. Preferably, the method comprises replacing an amount of ethylhexyl methoxycinnamate in the sunscreen composition with an equal amount of diethylhexyl sebacate.

[0011] In a preferred embodiment, the composition further does not contain any silicones, such as dimethicone.

[0012] In all embodiments of the present invention, the terms "ethylhexyl methoxycinnamate-free" or "silicone-free" mean that ethylhexyl methoxycinnamate or silicone is not intentionally added to the composition, i.e., the respective compound is not detectable by standard analytical means such as HPLC.

[0013] The term silicone is well known to those skilled in the art and refers to organosilicone compounds such as silicone oils. Typical silicones commonly used in cosmetics are, for example, dimethicone and polysiloxanes such as cyclohexasiloxane, cyclopentasiloxane, and cyclomethicone.

[0014] As used herein, the term "emulsion" refers to a composition comprising an oil phase and an aqueous phase, such as, in particular, an O / W, W / O, Si / W, W / Si, O / W / O, W / O / W multiple, or Pickering emulsion, preferably an O / W, W / O, O / W / O, W / O / W multiple or Pickering emulsion.

[0015] Bis-ethylhexyloxyphenol methoxyphenyl triazine (also referred to herein as BEMT) is also known as 2,4-bis{[4-(2-ethylhexyloxy)-2-hydroxy]phenyl}-6-(4-methoxyphenyl)-1,3,5-triazine (chemical name) or bemotrizinol (INN). BEMT acts as a broad-spectrum UV filter, absorbing UVB and UVA rays. It has two absorption peaks, 310 and 340 nm. BEMT is suggested for use in sun products, daycare products, and alpha products such as BB creams and whitening products.

[0016] In all embodiments of the invention, the amount of BEMT in the sunscreen composition according to the invention is advantageously chosen in the range of 0.4 to 10% by weight, preferably in the range of 0.4 to 9% by weight, 0.4 to 8% by weight, 0.4 to 7% by weight, 0.4 to 6% by weight, 0.4 to 5% by weight, 0.4 to 4% by weight, 0.4 to 3% by weight, 0.5 to 3% by weight, 0.8 to 9% by weight, 0.8 to 8% by weight, 0.8 to 7% by weight, 0.8 to 6% by weight, 0.8 to 5% by weight, 0.8 to 4% by weight, 0.8 to 3% by weight, for example in the range of 1 to 5% by weight, 1 to 3% by weight, 2 to 5% by weight or 2 to 4% by weight, based on the total weight of the composition.

[0017] Diethylhexyl sebacate [CAS 122-62-3] is also known as bis(2-ethylhexyl) decanedioate and is commercially available, for example, under the trade name Zetemol OSB.

[0018] In all embodiments of the present invention, the (total) amount of diethylhexyl sebacate in the sunscreen composition according to the invention is advantageously at least 1% by weight, preferably at least 2% by weight, most preferably at least 2.5% by weight, based on the total weight of the composition.

[0019] In all embodiments of the present invention, the (total) amount of diethylhexyl sebacate is at most 25 wt. %, preferably at most 15 wt. %, even more preferably at most 10 wt. %, based on the total weight of the composition.

[0020] Even more preferably, in all embodiments of the present invention, the amount of diethylhexyl sebacate is selected in the range of 10 to 35 wt.%, more preferably in the range of 15 to 30 wt.%, and most preferably in the range of 17 to 25 wt.%, for example, 15 to 25 wt.%, 17 to 30 wt.%, or 17 to 25 wt.%, based on the total weight of the composition. A more preferred range is 1 to 5 wt.%.

[0021] In another embodiment of the present invention, it is advantageous if the amount of diethylhexyl sebacate in the composition according to the present invention is selected in the range of 1 to 10% by weight, more preferably in the range of 1 to 7.5% by weight, most preferably in the range of 1 to 5% by weight, based on the total weight of the composition, for example in the range of 2 to 10% by weight, 2.5 to 10% by weight, 2 to 7.5% by weight, 2.5 to 7.5% by weight, 2 to 5% by weight, or 2.5 to 5% by weight, with a further preferred range being 1 to 5% by weight, based on the total weight of the composition.

[0022] In all embodiments of the present invention, the ratio of the total amount of diethylhexyl sebacate to the total amount of BEMT is preferably selected in the range of 1:1 to 25:1, preferably in the range of 3:1 to 20:1, and most preferably in the range of 5:1 to 15:1, with more preferred ranges being 3:1 to 10:1 and 1:1 to 5:1.

[0023] In all embodiments of the present invention, the sunscreen composition of the present invention further comprises one or more alkanediols. Suitable alkanediols include 1,2-alkanediols and 1,3-alkanediols, such as, in particular, 1,2-butanediol, butylene glycol, 1,2-pentanediol, 1,2-hexanediol, 2-methyl-1,3-propanediol, and 1,3-propanediol. In all embodiments of the present invention, the use of 1,3-propanediol, butylene glycol, and / or 1,2-butanediol is preferred. In all embodiments of the present invention, the composition most preferably comprises 1,3-propanediol, butylene glycol, and 1,2-butanediol as alkanediols, preferably in the absence of any additional alkanediol. Even more preferably, the composition comprises bytylene glycol, and even more preferably as the sole alkanediol.

[0024] The total amount of alkanediol in the sunscreen composition according to the present invention is preferably selected in the range of 1 to 10% by weight, more preferably in the range of 1.5 to 7.5% by weight, most preferably in the range of 2 to 6% by weight, for example in the range of 2 to 5% by weight, based on the total weight of the composition.

[0025] Preferably, in all embodiments of the present invention, the composition further comprises butyl methoxydibenzoylmethane and / or diethylamino hydroxybenzoyl hexyl benzoate (DHHB).

[0026] The amount of butyl methoxydibenzoylmethane (commercially available as PARSOL® 1789) in the sunscreen composition according to the invention is preferably chosen in the range of 1 to 10% by weight, more preferably in the range of 1.5 to 7.5% by weight, most preferably in the range of 2 to 6% by weight, for example in the range of 2 to 5% by weight, based on the total weight of the composition.

[0027] The amount of diethylaminohydroxybenzoylhexylbenzoate (commercially available as PARSOL® DHHB or Uvinul® A plus) in the sunscreen composition according to the invention is preferably chosen in the range of 1 to 10 wt. %, more preferably in the range of 1.5 to 7.5 wt. %, most preferably in the range of 2 to 6 wt. %, for example in the range of 2 to 5 wt. %, based on the total weight of the composition.

[0028] Since the sunscreen compositions according to the invention are intended for topical application, it is understood that they comprise a physiologically acceptable medium, i.e., a medium that is compatible with the skin, mucous membranes, and keratinous materials such as keratinous fibers. In particular, a physiologically acceptable medium is a cosmetically acceptable carrier.

[0029] It will be understood that the term sunscreen composition as used herein refers to a composition comprising at least BEMT, preferably in the presence of further substances that absorb UV light, such as commonly used UVA, UVB or broadband UV filter substances, however it will be appreciated that the composition does not comprise ethylhexyl methoxycinnamate and preferably does not comprise silicone.

[0030] In one embodiment, the composition preferably comprises BEMT and butyl methoxydibenzoylmethane, preferably as the only UV filters.

[0031] In another embodiment, the composition preferably comprises BEMT and diethylaminohydroxybenzoylhexylbenzoate, preferably as the only UV filters.

[0032] As used herein, the term "cosmetically acceptable carrier" refers to any carrier and / or excipient and / or diluent conventionally used in topical cosmetic compositions, especially skin care formulations.

[0033] The exact amount of carrier will depend on the actual levels of the UV filter material and any other optional ingredients (e.g., other active ingredients) that one skilled in the art would classify as different from a carrier.

[0034] In an advantageous embodiment, the sunscreen composition according to the invention comprises from 50% to 99%, preferably from 60% to 98%, more preferably from 70% to 98%, for example in particular from 80% to 95%, of carrier, based on the total weight of the sunscreen composition.

[0035] In certain advantageous embodiments, the carrier further comprises at least 30% by weight, more preferably at least 40% by weight, most preferably at least 45% by weight of water, for example, in particular 50-90% by weight of water, with further preferred ranges being 50-75%, 50-70% by weight, and 55-65% by weight.

[0036] In particular, the sunscreen composition according to the invention is a cosmetic or pharmaceutical composition, preferably a cosmetic (non-therapeutic) composition.

[0037] In one embodiment, the sunscreen composition according to the invention is applied to mammalian keratinous tissue, such as in particular human skin or the human scalp and hair.

[0038] The term "cosmetic composition" as used in this application refers to cosmetic compositions as defined in the "Kosmetika" section of Römpp Lexikon Chemie, 10th edition 1997, Georg Thieme Verlag Stuttgart, New York, as well as cosmetic compositions as disclosed in A. Domsch, "Cosmetic Compositions", Verlag für chemische Industrie (ed. H. Ziolkowsky), 4th edition, 1992.

[0039] Preferred sunscreen compositions according to the present invention are skin care formulations, decorative formulations, and functional formulations.

[0040] Examples of skin care formulations are, in particular, photoprotective formulations, anti-aging formulations, formulations for treating photoaging, body lotions, body gels, treatment creams, skin protective ointments, balms, moisturizing gels, moisturizing sprays, moisturizers for the face and / or body, skin tanning formulations (i.e. compositions for artificial / sunless tanning and / or browning of human skin), such as self-tanning creams, and skin lightening formulations.

[0041] Examples of decorative preparations are in particular mascaras or dry and wet make-up formulations.

[0042] Examples of functional formulations are, but are not limited to, cosmetic or pharmaceutical compositions containing active ingredients such as hormone formulations, vitamin formulations, plant extract formulations, anti-aging formulations, and / or antimicrobial (antibacterial or antifungal) formulations.

[0043] In a particular embodiment, the sunscreen composition according to the invention is a photoprotective preparation (suncare product, sunscreen), such as a sunscreen emulsion, a sunscreen lotion, a sunscreen cream, a sunscreen with or without an SPF (Sun Protection Factor) label, or a topical or daycare cream. Of particular interest are sunscreen creams, sunscreen lotions, and sunscreen emulsions.

[0044] The compositions of the present invention (including the carrier) may contain conventional adjuvants and additives such as preservatives / antioxidants, fatty substances / oils, organic solvents, silicones, thickeners, emollients, emulsifiers, antifoaming agents, aesthetic ingredients such as fragrances, surfactants, fillers, anionic, cationic, nonionic or amphoteric polymers or mixtures thereof, propellants, acidifying or basifying agents, dyes, colorants / colorants, abrasives, absorbents, chelating and / or sequestrants, essential oils, skin fresheners, astringents, pigments, or any other ingredient normally incorporated into such compositions.

[0045] According to the invention, the compositions according to the invention may comprise further ingredients such as skin lightening; sun protection; treatment of hyperpigmentation; ingredients for preventing or reducing acne, wrinkles, fine lines, atrophy and / or inflammation, chelating and / or sequestrants, anti-cellulite and slimming agents (e.g., phytanic acid), firming agents, moisturizing and revitalizing agents, self-tanning agents, soothing agents, and agents for improving elasticity and skin barrier properties, as well as carriers and / or excipients or diluents conventionally used in sunscreen compositions.

[0046] Unless otherwise specified, the excipients, additives, diluents, etc. described below are suitable for the sunscreen compositions according to the present invention. The required amounts of cosmetic and dermatological adjuvants and additives can be easily determined by those skilled in the art based on the desired product.

[0047] Additional ingredients can be added to either the oil phase, the water phase, or separately, as deemed appropriate. The mode of addition can be readily adapted by one skilled in the art.

[0048] Examples of cosmetic excipients, diluents, adjuvants, additives and active ingredients commonly used in the skin care industry that are suitable for use in the cosmetic compositions of the present invention are described, for example, but not limited to, in the International Cosmetic Ingredient Dictionary & Handbook by the Personal Care Product Council (http: / / www.personalcarecouncil.org / ), accessible via INFO BASE online at http: / / online.personalcarecouncil.org / jsp / Home.jsp.

[0049] Cosmetic actives useful herein may in some cases provide more than one benefit or function by more than one mechanism of action.

[0050] Naturally, the skilled person will carefully select the above-mentioned optional additional components, adjuvants, diluents and additives and / or their amounts so that the advantageous properties inherently associated with the combination according to the invention are not adversely affected or are not substantially affected by the envisaged addition.

[0051] The amount of oil phase (i.e. the phase containing all the fats and oils) in an emulsion according to the invention present in such an emulsion is preferably at least 10% by weight, for example in the range 10 to 60% by weight, preferably in the range 15 to 50% by weight, most preferably in the range 15 to 40% by weight, based on the total weight of the composition.

[0052] According to an even more preferred embodiment, the sunscreen composition according to the invention as outlined herein is an O / W emulsion comprising an oil phase dispersed in an aqueous phase in the presence of an O / W emulsifier. The preparation of such O / W emulsions is well known to those skilled in the art and is illustrated in the examples.

[0053] In an advantageous embodiment, the O / W emulsifier is a phosphate ester emulsifier. Among the preferred phosphate ester emulsifiers are C8-10 alkylethyl phosphate, C9-15 alkyl phosphate, ceteareth-2 phosphate, ceteareth-5 phosphate, ceteth-8 phosphate, ceteth-10 phosphate, cetyl phosphate, C6-10 pareth-4 phosphate, C12-15 pareth-2 phosphate, C12-15 pareth-3 phosphate, DEA-ceteareth-2 phosphate, DEA cetyl phosphate, DEA oleth-3 phosphate, potassium cetyl phosphate, deceth-4 phosphate, deceth-6 phosphate, and trilaureth-4 phosphate. A particular phosphate ester emulsifier according to the invention is potassium cetyl phosphate, for example, commercially available as Amphisol® K from DSM Nutritional Products Ltd.

[0054] Further suitable O / W emulsifiers according to the invention are PEG-30 dipolyhydroxystearate, PEG-4 dilaurate, PEG-8 dioleate, PEG-40 sorbitol oleate, PEG-7 glyceryl cocoate, PEG-20 glyceryl almondate, PEG-25 hydrogenated castor oil, glyceryl stearate (and) PEG-100 stearate, PEG-7 olivoate, PEG-8 oleate, PEG-8 laurate, PEG-60 glyceryl almondate, PEG-20 methylglucose sesquistearate, PEG-40 stearate, stearic acid PEG-100 sorbitan laurate, PEG-80 sorbitan laurate, steareth-2, steareth-12, oleth-2, ceteth-2, laureth-4, oleth-10, oleth-10 / polyoxyl 10 oleyl ether, ceteth-10, isosteareth-20, ceteareth-20, oleth-20, steareth-20, steareth-21, ceteth-20, isoceteth-20, laureth-23, steareth-100, glyceryl stearate citrate, glyceryl stearate (self-emulsifying), stearic acid, salts of stearic acid, polyglyceryl-3 methylglucose distearate. Further suitable emulsifiers are sorbitan oleate, sorbitan sesquioleate, sorbitan isostearate, sorbitan trioleate, lauryl glucoside, decyl glucoside, sodium stearoyl glutamate, sucrose polystearate, and hydrated polyisobutene. Furthermore, one or more synthetic polymers may be used as emulsifiers, such as PVP eicosene copolymer, acrylates / C10-30 alkyl acrylate crosspolymer, acrylates / steareth-20 methacrylate copolymer, PEG-22 / dodecyl glycol copolymer, PEG-45 / dodecyl glycol copolymer, and mixtures thereof.

[0055] Another particularly suitable type of O / W emulsifier is a nonionic self-emulsifying system derived from olive oil, known for example as (INCI name) cetearyl olivate and sorbitan olivate (chemical composition: sorbitan and cetearyl esters of olive oil fatty acids) sold under the trade name OLIVEM 1000.

[0056] Even more suitable are commercially available polymeric emulsifiers, such as hydrophobically modified polyacrylic acids such as acrylate / C10-30 alkyl acrylate crosspolymers available from Noveon under the tradenames Pemulen® TR-1 and TR-2.

[0057] Polyalkylene glycol ethers such as Brij 72 (polyoxyethylene (2) stearyl ether) or Brij 721 (polyoxyethylene (21) stearyl ether) available from Croda are also suitable.

[0058] Particularly advantageous O / W emulsifiers according to the invention are polyglyceryl-3 methylglucose distearate, lauryl glucoside (and) polyglyceryl-2 dipolyhydroxystearate, glyceryl stearate citrate, sodium cetearyl sulfate, cetearyl glucoside; polyglyceryl-6 stearate (and) polyglyceryl-6 behenate, cetearyl olivate (and) sorbitan olivate, arachidyl alcohol (and) behenyl Alcohol (and) Arachidyl Glucoside, Cetearyl Alcohol (and) Coco-Glucoside, Coco-Glucoside (and) Coconut Alcohol, PEG-100 Stearate (and) Glyceryl Stearate, Sodium Stearoyl Glutamate, Steareth-20, Steareth-21, Steareth-25, Steareth-2, Ceteareth-25, and Ceteareth-6 (all listed by their INCI names).

[0059] According to the invention, it is particularly preferred if the composition comprises potassium cetyl phosphate as emulsifier.

[0060] The at least one O / W, respectively Si / W emulsifier is preferably used in an amount of 0.5 to 10% by weight, such as in particular in the range of 0.5 to 5% by weight, such as most in particular in the range of 0.5 to 4% by weight, based on the total weight of the composition.

[0061] Suitable W / O or W / Si emulsifiers according to the invention are polyglycerol esters or diesters of fatty acids, also called polyglyceryl esters / diesters (i.e. polymers in which fatty acids are linked by esterification with polyglycerol), e.g. Isolan from Evonik Such as commercially available as GPS (INCI name: Polyglyceryl-4 diisostearate / polyhydroxystearate / sebacate (i.e., a diester of polyglycerin-4 with a mixture of isostearic acid, polyhydroxystearic acid, and sebacic acid)) or Dehymuls available from Cognis (INCI name: Polyglyceryl-2 dipolyhydroxystearate, PEG-30 dipolyhydroxystearate, cetyl dimethicone copolyol, Polyglyceryl-3 diisostearate polyglycerol esters of oleic acid / isostearic acid, Polyglyceryl-6 hexalicinoleate, Polyglyceryl-4 oleate, magnesium stearate, sodium stearate, potassium laurate, potassium ricinoleate, sodium cocoate, sodium tallowate, potassium castorate, sodium oleate, and mixtures thereof). Further suitable W / O emulsifiers are lauryl polyglyceryl-3 polydimethylsiloxyethyl dimethicone, and / or PEG-9 polydimethylsiloxyethyl dimethicone, and / or cetyl PEG / PPG-10 / 1 dimethicone, and / or PEG-12 dimethicone crosspolymer, and / or PEG / PPG-18 / 18 dimethicone. The at least one W / O emulsifier is preferably used in an amount of about 0.001 to 10% by weight, more preferably 0.2 to 7% by weight, based on the total weight of the composition.

[0062] The sunscreen composition according to the invention further advantageously contains at least one co-surfactant, for example from the group of mono- and diglycerides and / or fatty alcohols. The co-surfactant is generally used in an amount selected from the range of 0.1 to 10% by weight, in particular from the range of 0.5 to 7% by weight, and most particularly from 1 to 5% by weight, based on the total weight of the composition. Particularly suitable co-surfactants are selected from the list of alkyl alcohols, such as cetyl alcohol (Lorol C16, Lanette 16), cetearyl alcohol (Lanette O), stearyl alcohol (Lanette 18), behenyl alcohol (Lanette 22), polyhydroxystearic acid, glyceryl stearate, glyceryl myristate (Estol 3650), hydrogenated cocoglycerides (Lipocire Na10), and mixtures thereof.

[0063] In all embodiments of the invention, it is particularly advantageous if the composition also comprises cetyl alcohol, stearyl alcohol and / or glyceryl stearate, preferably stearyl alcohol.

[0064] In an advantageous embodiment of the composition of the present invention, the composition comprises dicaprylate / dicaprate, phenethyl benzoate, benzoic acid C 12 ~C 15 Alkyl, Dibutyl Adipate, Diisopropyl Sebacate, Dicaprylyl Carbonate, Di-C Tartrate 12 ~ 13 Alkyl, diethylhexyl syringylidene malonate, hydrogenated castor oil dimer, triheptanoin, lactic acid C 12 ~ 13 Alkyl, benzoic acid C 16 ~ 17 Also included are compositions containing one or more oils selected from alkyl, propylheptyl caprylate, caprylic / capric triglyceride, diethylhexyl 2,6-naphthalenedicarboxylate, octyldodecanol, and ethylhexyl cocoate. Preferably, the composition according to the present invention contains as the oil dibutyl adipate, phenethyl benzoate, dicaprylyl carbonate, benzoic acid C 12~C 15 Alkyl, caprylyl carbonate, capric / caprylic triglycerides and mixtures thereof, most preferably dicaprylyl carbonate, dibutyl adipate and C benzoate 12 ~C 15 Contains alkyl.

[0065] It is well understood that the total amount of oil (including the amount of diethylhexyl sebacate), particularly those listed above in all embodiments of the present invention, is selected so that all solid UV filters, including BEMT, present in the composition are completely dissolved and do not recrystallize during storage (at room temperature for at least 3 months). Selection of a suitable amount is well known to those skilled in the art. Suitable amounts are, for example, in the range of 15 to 45 wt %, 20 to 40 wt %, and 20 to 35 wt %, based on the total weight of the exemplified composition.

[0066] In an even more advantageous embodiment of the present invention, the sunscreen composition of the present invention further comprises a preservative and / or preservative booster, preferably selected from the group consisting of ethanol, phenoxyethanol, 1,2-pentanediol, 1,2-hexanediol, 1,2-octanediol (caprylyl glycol), 1,2-decanediol, 2-methyl-1,3-propanediol, propanediol, propylene glycol, and p-hydroxyacetophenone; more preferably selected from the group consisting of ethanol, phenoxyethanol, ethylhexylglycerin, hexylglycerin, glyceryl caprylate, and mixtures thereof; and most preferably selected from the group consisting of phenoxyethanol and ethylhexylglycerin and mixtures thereof. When present, the preservative or preservative booster, respectively, is preferably used in an amount (total) of 0.01 to 2% by weight, more preferably 0.05 to 1.5% by weight, and most preferably 0.1 to 1.0% by weight, based on the total weight of the composition.

[0067] According to the invention, it is further advantageous if the composition of the invention comprises ethanol, phenoxyethanol and / or ethylhexylglycerin.

[0068] In another advantageous embodiment, the sunscreen composition according to the invention does not contain any parabens, benzethonium chloride, piroctone olamine, lauroyl arginate, methylisothiazolinone, chloromethylisothiazolinone, bronopol, benzalkonium chloride, formaldehyde-releasing compounds, salicylic acid, triclosan, DMDM hydantoin, chlorphenesin and IPBC (iodopropynyl butylcarbamate).

[0069] In another advantageous embodiment, the sunscreen composition according to the invention furthermore does not contain oxybenzone and / or methylbenzylidene camphor.

[0070] Sunscreen compositions according to the present invention may further contain one or more emollients to soothe and soften the skin. By way of example, emollients may be silicones (dimethicone, cyclomethicone), vegetable oils (grape seed, sesame seed, jojoba oil, etc.), butters (cocoa butter, shea butter), and petrolatum derivatives (petrolatum, mineral oil).

[0071] In another embodiment, the sunscreen composition of the present invention may comprise any of the following compounds: limonene, citral, linalool, alpha-isomethyl ionone, geraniol, citronellol, 2-isobutyl-4-hydroxy-4-methyltetrahydropyran, 2-tert-pentylcyclohexyl acetate, 3-methyl-5-phenyl-1-pentanol, 7-acetyl-1,1,3,4,4,6-hexamethyltetralin, adipic acid diester, cinnamal, amyl salicylate, alpha-amyl cinnamaldehyde, alpha-methyl ionone, butylphenyl methylpropional, cinnamal, amyl cinnamyl alcohol, anise alcohol, benzoin, benzyl alcohol, benzyl benzoate, benzyl cinnamate, The fragrance may contain one or more fragrances selected from benzyl salicylate, bergamot oil, bitter orange oil, butylphenyl methylpropional, cardamom oil, cedrol, cinnamal, cinnamyl alcohol, citronellyl methylcrotonate, citrus oils, coumarin, diethyl succinate, ethyl linalool, eugenol, evernia furfurracea extract, hornwort extract, farnesol, guaiawood oil, hexyl cinnamal, hexyl salicylate, hydroxycitronellal, lavender oil, lemon oil, linalyl acetate, mandarin oil, menthyl PCA, methylhexadecane, nutmeg oil, rosemary oil, sweet orange oil, terpineol, tonka bean oil, triethyl citrate, and vanillin.

[0072] The compositions of the invention may advantageously comprise a moisturizer, which is a compound or mixture of compounds that, after application or distribution on the skin surface, imparts to the cosmetic composition the quality of reducing water loss from the stratum corneum (as measured experimentally, for example, by transepidermal water loss (TEWL)) and / or positively influencing and / or maintaining the hydration status of the stratum corneum.

[0073] Non-limiting examples of advantageous moisturizing agents for use in the present invention include glycerol, lactic acid and / or lactate salts, especially sodium lactate, biosaccharide gum-1, wild soybean, ethylhexyloxyglycerol, pyrrolidone carboxylic acid, and urea. In particular, the use of polymeric moisturizing agents from the group of water-soluble and / or water-swellable and / or water-gelable polysaccharides is more advantageous. Particularly advantageous are, for example, hyaluronic acid, chitosan, and / or fucose-rich polysaccharides, which are registered in Chemical Abstracts under registration number 178463-23-5 and are available, for example, from the company SOLABIA SA under the name Fucogel® 1000. Moisturizing agents can also be advantageously used as active anti-wrinkle ingredients, for example, to protect against changes to the skin that occur during skin aging.

[0074] Advantageously, but not necessarily, the cosmetic composition of the present invention may further comprise fillers, which, for example, further improve the sensory and cosmetic properties of the formulation and have the effect of evoking or enhancing a velvety or silky skin feel. Advantageous fillers within the meaning of the present invention are starch and starch derivatives (e.g., tapioca starch, cross-linked starch, aluminum or sodium octenyl succinate starch, etc.), Valvance pigments that essentially have no UV filtering or coloring effect (e.g., Valvance Touch 210 or 250), and / or Aerosils®, and / or talc, and / or polyethylene, nylon, and dimethylsilylated silica.

[0075] The aqueous phase of the compositions of the invention may advantageously contain customary cosmetic adjuvants, such as, in each case individually or in combination, alcohols, in particular those with a low C number, preferably ethanol and / or isopropanol, or polyols with a low C number, and also their ethers, preferably glycerol, electrolytes, self-tanning agents, and also in particular one or more thickeners, which may advantageously be selected from the group of silicon dioxide, aluminum silicate, polysaccharides and / or derivatives thereof, such as hyaluronic acid, xanthan gum, hydroxypropylmethylcellulose, and particularly advantageously polyacrylates, preferably from the group of polyacrylates from the group referred to as carbopols, examples of which are carbopols of types 980, 981, 1382, 2984 and 5984. Further advantageous thickeners according to the invention are those with the INCI name (Acrylates / C10-30 Alkyl Acrylate Crosspolymer) (e.g. Pemulen TR 1, Pemulen TR 2, Carbopol 1328 from NOVEON), as well as Aristoflex AVC (INCI: (Ammonium Acryloyldimethyltaurate / VP) Copolymer) and Simugel NS (INCI: (Hydroxyethyl Acrylate / Sodium Acryloyldimethyltaurate) Copolymer (and) Squalane (and) Polysorbate 60). Further suitable thickeners in all embodiments of the invention are biopolymers such as microcrystalline cellulose, cellulose, cellulose gum, Sphingomonas fermentation extract, etc.

[0076] According to the present invention, it is preferred if the composition comprises one or more thickeners selected from the group consisting of xanthan gum, microcrystalline cellulose, cellulose, cellulose gum, crosslinked acrylates / C10-30 alkyl acrylate polymer, hydroxyethyl acrylate / sodium acryloyldimethyl taurate copolymer and / or vinylpyrrolidone / hexadecane copolymer, preferably xanthan gum and / or hydroxyethyl acrylate / sodium acryloyldimethyl taurate, most preferably both xanthan gum and hydroxyethyl acrylate / sodium acryloyldimethyl taurate.

[0077] The (total) amount of one or more thickeners in the composition according to the invention is preferably chosen in the range of 0.1 to 1% by weight, preferably 0.1 to 0.75% by weight, most preferably 0.1 to 0.5% by weight, for example in the range 0.2 to 0.5% by weight, based on the total weight of the composition.

[0078] In another embodiment, the composition may have an SPF of at least 15, preferably at least 20, and most preferably at least 30.

[0079] According to the invention, the composition of the invention may advantageously comprise a further film-forming agent.

[0080] It is particularly advantageous to select said further film-forming agents from the group of polyvinylpyrrolidone (PVP) and polymers based on capryloyl glycerin / sebacic acid copolymer, diisostearoyl polyglyceryl 3 dimer dilinoleate and / or ethylcellulose.

[0081] Particularly preferred are copolymers of vinylpyrrolidone, such as PVP hexadecane copolymer and PVP eicosene copolymer, available under the tradenames Antaron V216 and Antaron V220 from GAF Chemicals Corporation.

[0082] Similarly, as further polymeric film-forming agents, sodium polystyrene sulfonate, available, for example, from National Starch and Chemical Corp. under the trade name Flexan 130, and / or polyisobutene, available from Rewo under the trade name Rewopal PIB1000, are advantageous. Further examples of suitable polymers are polyacrylamide (Seppigel 305), polyvinyl alcohol, PVP, PVP / VA copolymer, polyglycol, acrylate / octylacrylamide copolymer (Dermacryl 79). Similarly advantageous is the use of hydrogenated castor oil dimer dilinoleate (INCI hydrogenated castor oil dimer dilinoleate), available from Takayoshi Alcohol Kogyo Co., Ltd. under the trade name Risocast DA-H, or PPG-3 benzyl ether myristate, available from Croda Chemicals under the trade name Crodamol STS.

[0083] Sunscreen compositions according to the present invention generally have a pH in the range of 3 to 10, preferably in the range of 4 to 8, and most preferably in the range of 4 to 7. The pH can be readily adjusted, if necessary, using a suitable acid, such as citric acid, or base, such as NaOH, according to standard methods in the art.

[0084] According to the invention, the use of the compositions of the invention is for protecting the skin against ageing, in particular against UV-induced skin ageing, and as a sun protection composition.

[0085] Finally, the subject of the present invention is a method for the cosmetic treatment of keratinous materials, in particular the skin, in which a composition as defined herein is applied to said keratinous materials, in particular the skin, which method is particularly suitable for protecting the skin from the harmful effects of ultraviolet radiation, in particular sunburn and / or photoaging, while avoiding fluorescent staining of clothes and / or garments.

[0086] The following examples are provided to further illustrate the compositions and effects of the present invention. These examples are illustrative only and are not intended to limit the scope of the invention in any way.

[0087] [Experimental section] [formulation] The formulations (O / W emulsions) outlined in Table 1 were prepared by standard methods in the art.

[0088] [method] Soaping effectiveness was measured with a LENETA black card according to the method outlined below. - Apply 300 mg of cream to LENETA black card - The cream is spread to a uniform thickness using a spreading device (speed: 10 mm / sec) with a 90 mm spreading knife. - Measure the LAB immediately after application with a Minolta Chroma Meter CR-300 at four measurement spots on each card. - Calculate and compare average L values

[0089] The results are shown in Table 1.

[0090] [Table 1]

[0091] As can be seen from Table 1, the combination according to the present invention synergistically reduces the L value, ie, reduces soaping synergistically.

Claims

1. A sunscreen composition in the form of an emulsion containing bis-ethylhexyloxyphenol methoxyphenyl triazine (BEMT), diethylhexyl sebacate, and one or more alkanediols, provided that it does not contain ethylhexyl methoxycinnamate.

2. The sunscreen composition according to claim 1, wherein the amount of bis-ethylhexyloxyphenol methoxyphenyl triazine is selected in the range of 0.1 to 10% by weight based on the total weight of the composition.

3. The sunscreen composition according to claim 1 or 2, wherein the amount of diethylhexyl sebacate is at least 1% by weight based on the total weight of the composition.

4. The sunscreen composition according to claim 1 or 2, wherein the amount of diethylhexyl sebacate is 25% by weight or less based on the total weight of the composition.

5. The sunscreen composition according to claim 1 or 2, wherein the ratio of the total amount of diethylhexyl sebacate to the total amount of BEMT is selected in the range of 1:1 to 25:

1.

6. The sunscreen composition according to claim 1 or 2, wherein the one or more alkanediols are selected from the group consisting of 1,3-propanediol, butylene glycol, and 1,2-butanediol.

7. The sunscreen composition according to claim 1 or 2, wherein the total amount of alkanediol is selected in the range of 1 to 10% by weight, based on the total weight of the composition.

8. The sunscreen composition according to claim 1 or 2, which is an O / W emulsion comprising an oil phase dispersed in an aqueous phase in the presence of an O / W emulsifier.

9. The sunscreen composition according to claim 1 or 2, further comprising butyl methoxydibenzoylmethane and / or diethylamino hydroxybenzoyl hexyl benzoate.

10. The sunscreen composition according to claim 1 or 2, wherein the amount of butyldibenzoylmethane and / or diethylaminohydroxybenzoylhexyl benzoate is selected in the range of 1 to 10% by weight, based on the total weight of the composition.

11. Dicaprylate / Dicaprate, Phenethyl benzoate, C benzoate １２ ~C １５ Alkyl, dibutyl adipate, diisopropyl sebacate, dicaprylyl carbonate, di-C tartrate １２～１３ Alkyl, hydrogenated castor oil dimer acid, triheptanoin, C lactate １２～１３ Alkyl, C benzoate １６～１７ A sunscreen composition according to claim 1 or 2, further comprising one or more of alkyl, propylheptyl caprylate, tri(caprylic / capric acid) glyceride, 2,6-naphthalenedicarboxylate diethylhexyl, octyldodecanol, coconut oil fatty acid ethylhexyl, and dibutyl adipate.

12. The sunscreen composition according to claim 1 or 2, further comprising one or more preservatives / preservative boosters selected from the group consisting of ethanol, phenoxyethanol, 1,2-pentanediol, 1,2-hexanediol, 1,2-octanediol (caprylyl glycol), 1,2-decanediol, 2-methyl-1,3-propanediol, propanediol, propylene glycol, and p-hydroxyacetophenone.

13. Xanthan gum, microcrystalline cellulose, cellulose, cellulose gum, cross-linked acrylate / C acrylate １０ ~C ３０ The sunscreen composition according to claim 1 or 2, further comprising one or more alkyl polymers and hydroxyethyl acrylate / sodium acryloyldimethyl taurate copolymer.

14. A sunscreen composition according to claim 1 or 2, further comprising one or more of behenyl alcohol, cetyl alcohol, cetearyl alcohol, stearyl alcohol, and glyceryl stearate.

15. A method for reducing the soaping effect of a sunscreen composition containing bis-ethylhexyloxyphenol methoxyphenyl triazine and ethylhexyl methoxycinnamate, comprising the steps of: replacing ethylhexyl methoxycinnamate contained in the sunscreen composition with diethylhexyl sebacate; and optionally evaluating the effect.