Compositions comprising lactic acid esters and pbsa

Abstract

The present invention relates to a sunscreen or daily care composition with photoprotection comprising (i) at least 1.5 to 20 wt.% of one ester of lactic acid, (ii) 0.5 to 8 wt.% of phenylbenzimidazole sulfonic acid and / or it salts, and (iii) at least one UV filter other than phenylbenzimidazole sulfonic, wherein said at least one UV filter other than phenylbenzimidazole sulfonic acid comprises at least bis- ethylhexyloxyphenol methoxyphenyl triazine (BEMT), wherein the pH of the composition is within the range of 5.0 to 8.0, and wherein the weight ratio of (i) to (ii) is 1:2 to 5:1. The present invention furthermore relates to the use of of phenylbenzimidazole sulfonic acid and / or it salts for improving the stability of a sunscreen or daily care composition with photoprotection comprising at least one ester of lactic acid.

Description

[0001] Compositions comprising lactic acid esters and PBSA

[0002] Field of the invention

[0003] The present invention relates to a sunscreen or daily care composition with photoprotection, comprising: (i) at least one ester of lactic acid; (ii) phenylbenzimidazole sulfonic acid (PBSA) and / or its salts; and, optionally, (iii) at least one additional UV filter other than phenylbenzimidazole sulfonic, wherein the pH of the composition is within the range of 5.0 to 8.0. The present invention furthermore relates to the use of phenylbenzimidazole sulfonic acid and / or it salts for improving the stability of a sunscreen or daily care composition with photoprotection comprising at least one ester of lactic acid.

[0004] Background of the invention

[0005] UV radiation causes harmful effects on the human skin. Beside the acute effect of sunburn of the skin, UV radiation is also known to increase the risk of skin cancer. Furthermore, long time exposure to UV-A and UV-B light can cause phototoxic and photo allergenic reactions on the skin and can accelerate skin aging.

[0006] To protect the human skin from UV radiation, various sun protecting UV filters (also referred to as UV absorbers) exist including UV-A filter, UV-B filter and broadband filters. These filters are added to sunscreen or daily care compositions. The UV filters are either organic or inorganic, particulate or non-particulate compounds, of which all have an absorption efficacy in the UV-light range. In general, UV light reaching the earth surface can be divided into UV-A radiation and UV-B radiation. Depending on the position of the absorption maxima, UV-filters are divided into UV-A and UV-B filters. In case an UV-filter absorbs both, UV-A and UV-B light, it is referred to as a broadband absorber. Since broadband UV filters provide protection against UVA and UVB radiation it is preferred to add these kind of UV filters into sunscreen or daily care composition. However, there is still the need of improved formulations that provide efficient and safe UV protection.

[0007] Particularly, regarding user requirements, it appears that sunscreen or daily care compositions having a satisfying stability, especially over periods of prolonged storage and / or at elevated temperatures, i.e., temperatures above room temperature (20 to 25 °C), are preferred.

[0008] Against this background, there is an ongoing need for sunscreen or daily care compositions for the daily use, which provide efficient sun protection and meet the consumer’s demands with respect to protection performance and overall convenience, particularly with respect to stability. In particular, it was an object of the present invention to provide efficient and stable sunscreen or daily care compositions.

[0009] Next generation UV filters often comprise substantial amounts of solid UV filters which need to be dissolved in the compositions. It has been found that lauryl lactate is well suited for solubilizing solid lipophilic UV filters but suffers from the drawback of potentially inducing a lowering of the pH (typically overtime), which is undesired. It has now been found that phenylbenzimidazole sulfonic acid (PBSA) or is salts, which is an UV filter itself, can reduce or even prevent said pH decrease induced by lauryl lactate. The combination of lauryl lactate and PBSA or it salts thus allows to make use of the advantageous properties of lauryl lactate while avoiding the previously observed drawbacks.

[0010] Summary of the invention

[0011] Thus, in a first aspect, the present invention provides a sunscreen or daily care composition with photoprotection, comprising:

[0012] (i) at least one ester of lactic acid;

[0013] (ii) phenylbenzimidazole sulfonic acid (PBSA) and / or its salts; and, optionally,

[0014] (iii) at least one UV filter other than phenylbenzimidazole sulfonic acid; wherein the pH of the composition is within the range of 5.0 to 8.0.

[0015] In some embodiments, the pH of the composition is maintained within the range of 5.0 to 8.0 or above 5.5 to 7.5 over a storage period of at least one week at a temperature of about 25 °C. In some embodiments, the pH is maintained within the given range over a period of storage of at least two weeks, preferably at least four weeks, or at least 8 or 12 weeks, preferably one year, preferably 2 years at 25°C.

[0016] In some embodiments, the pH of the composition is maintained within the range of above 5.0 to 8.0 or above 5.5 to 7.5 over a storage period of at least one week at a temperature of about 40 °C. In some embodiments, the pH is maintained within the given range over a period of storage of at least two weeks, preferably at least four weeks, or at least 8 or 12 weeks, preferably one year, preferably 2 years at 40°C.

[0017] In some embodiments, the at least one ester of lactic acid is selected from the group consisting of oleyl lactate, lauryl lactate, cetyl lactate, myristyl lactate, glyceryl lactate, tridecyl lactate, stearyl lactate, isostearyl lactate, and behenyl lactate, preferably lauryl lactate.

[0018] In some embodiments, the at least one ester of lactic acid is present in an amount of about 1 .0 to 20.0 wt.- % or 1.5 to 20.0 wt.-%, preferably about 2.0 to 15.0 wt.-%, more preferably about 3.0 to 10.0 wt.-%, based on the total weight of the composition.

[0019] In some embodiments, phenylbenzimidazole sulfonic acid and / or its salts is present in an amount of about 0.5 to 8.0 wt.-%, preferably about 0.7 to 5.0 wt.-%, more preferably about 1 .0 to 4.0 wt.-% or 1 .5 to 3.0 wt- %, based on the total weight of the composition.

[0020] In various embodiments, the weight ratio of the at least one ester of lactic acid (i) and the phenylbenzimidazole sulfonic acid and / or the salt thereof (ii) is 1 :2 to 5:1 or 1 :1.5 to 4.5:1 , preferably 1 :1 .2 to 4:1 , more preferably 1 :1 to 3:1 or 1 :1 to 2:1 ,

[0021] In some embodiments, the at least one UV filter other than PBSA is comprised in the sunscreen or daily care composition with photoprotection in an amount of 2 to 40 wt.-%, preferably of 5 to 35 wt.-%, more preferably of 5 to 30 wt.-% or of 5 to 35 wt.-%, still more preferably of 5 to 25 wt.-%, and in particular of 8 to 20 wt.-%, based on the total weight of the composition. In some embodiments, the at least one UV filter other than PBSA comprises

[0022] (1) a UV filter that is solid at 25°C; and / or

[0023] (2) a UV filter that is soluble in at least one cosmetic oil; and / or

[0024] (3) an organic UV filter; and / or

[0025] (4) a particulate UV filter.

[0026] In various embodiments, the at least one UV filter other than PBSA is solid at 25°C and soluble in at least one cosmetic oil.

[0027] In some embodiments, the at least one UV filter other than PBSA comprises at least one UVA filter, preferably selected from the group consisting of disodium phenyl dibenzimidazole tetrasulfonate (DPDT), hexyl 2-[4-(diethylamino)-2-hydroxybenzoyl]benzoate (INCI diethylamino hydroxybenzoyl hexyl benzoate, DHHB), methoxypropylamino cyclohexenylidene ethoxyethylcyanoacetate (MCE), 1-(4-(1 ,1-dimethylethyl)phenyl)-3-(4-methoxyphenyl)propane-1 ,3-dione (INCI butyl methoxydibenzoylmethane, BMDBM), terephthalylidene dicamphor sulfonic acid (TDSA), and combinations thereof; and / or at least one UVB filter, preferably selected from the group consisting of 4,4’,4”-(1 ,3,5-triazine-2,4,6- triyltriimino)tris-benzoic acid-tris(2-ethylhexyl)ester (INCI ethylhexyl triazone, EHT), 4,4’-[[6-[[4-[[(1 ,1- dimethylethyl)amino]carbonyl]phenyl]amino]-1 ,3,5-triazin-2,4-diyl]3iamino]bis-benzoic acid-bis(2- ethylhexyl)ester (INCI diethylhexyl butamido triazone, DBT), and combinations thereof; and / or at least one broadband UV filter, preferably selected from the group consisting of bisethylhexyloxyphenol methoxyphenyl triazine (INCI bis-ethylhexyloxyphenol methoxyphenyl triazine, BEMT), 2-(2H-benzotriazol-2-yl)-6-[(2-ethylhexyloxy)methyl]-4-methylphenol, 2-(2H-benzotriazol-2-yl)-4- methyl-6-[2-methyl-3-[1 ,3,3,3-tetramethyl-1-[(trimethylsilyl)oxy]-1-disiloxanyl]propyl]phenol (INCI drometrizole trisiloxane, DTS), 2,2'-methylenbis[6-(2H-benzotriazol-2-yl)-4-(1 ,1 ,3,3- tetramethylbutyl)phenol] (INCI methylene Bis-benzotriazolyl tetramethylbutylphenol, MBBT), phenylene bis-diphenyltriazine (PBDT), and combinations thereof; and / or at least one organic particulate UV filter, preferably selected from the group consisting of 2,2'- methylene bis[6-(2H-benzotriazol-2-yl)-4-(1 ,1 ,3,3-tetramethylbutyl)phenol] (INCI methylene bis- benzotriazolyl tetramethylbutylphenol), 2,4,6-tris(biphenyl-4-yl)-1 ,3,5-triazine (INCI tris-biphenyl triazine, TBPT), 1 ,1 ’-(1 ,4-piperazinediyl)bis[1-[2-[4-(diethylamino)-2-hydroxybenzoyl]phenyl]-methanone (INCI bis- (diethylaminohydroxybenzoyl benzoyl) piperazine), 5,6,5’,6’-tetraphenyl-3-3’-(1 ,4-phenylene)bis(1 ,2,4- triazine) (INCI phenylene bis-diphenyltriazine, PBDT), micronized 1 ,4-di(benzoxazole-2'-yl)benzene and combinations thereof; and / or at least one inorganic UV filter, preferably selected from the group consisting of titanium dioxide, zinc oxide, iron oxide, cerium oxide and mixtures thereof.

[0028] In various embodiments, the sunscreen or daily care composition with photoprotection comprises at least one UV filter other than PBSA selected from bis-ethylhexyloxyphenol methoxyphenyl triazine (BEMT), diethylamino hydroxybenzoyl hexyl benzoate (DHHB), methoxypropylamino cyclohexenylidene ethoxyethylcyanoacetate (MCE), butyl methoxydibenzoylmethane (BMDBM), ethylhexyl triazone (EHT), methylene bis-benzotriazolyl tetramethylbutylphenol (MBBT), tris-biphenyl triazine (TBPT) and any combination of two or more thereof.

[0029] In some embodiments, at least one broadband UV filter, for example BEMT, is comprised in the sunscreen or daily care composition, preferably in an amount of from 0.5 to 10 wt.-%, such as in an amount of 0.5, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 6.5, 7.0, 7.5, 8.0, 8.5, 9.0, 9.5 or 10 wt.-%, for example at a lower limit of 0.5, 1 .0, 1 .5 or 2.0 wt.-% and / or up to 10, 9.0, 8.0, 7.0 or 6.0 wt.-%, more preferably 1 to 5 wt.-% and even more preferably 2 to 4 wt.-%, based on the total weight of the composition.

[0030] In various embodiments, the composition comprises, relative to the total weight of the composition,

[0031] (i) at least one ester of lactic acid in an amount of 1 .5 to 20 wt.-%;

[0032] (ii) phenylbenzimidazole sulfonic acid (PBSA) and / or a salt thereof in an amount of 0.5 to 8 wt.-%;

[0033] (iii) BEMT in an amount of from 0.5 to 10 wt.-%;

[0034] (iv) DHHB, in an amount of from 0.5 to 8.0 wt.-%;

[0035] (v) EHT, in an amount of from 0.5 to 5.0 wt.-%; and, optionally,

[0036] (vi) at least one organic particulate UV filter selected from the group consisting of 2,2'-methylene bis[6- (2H-benzotriazol-2-yl)-4-(1 ,1 ,3,3-tetramethylbutyl)phenol] (INCI methylene bis-benzotriazolyl tetramethylbutylphenol), 2,4,6-tris(biphenyl-4-yl)-1 ,3,5-triazine (INCI trisbiphenyl triazine, TBPT), and 5,6,5’,6’-tetraphenyl-3-3’-(1 ,4-phenylene)bis(1 ,2,4-triazine) (INCI phenylene bisdiphenyltriazine; PBDT) in an amount of from 0.5 to 10.0 wt.-%; wherein the total amount of UV filters in the composition including PBSA and BEMT is 8 to 40 wt.-%; and wherein the weight ratio of (i) to (ii) is 1 :2 to 5:1 .

[0037] In some embodiments, the composition is free of at least one or more of, parabens, and organic UV filter compounds selected from the group of homomenthyl salicylate, ethylhexyl methoxycinnamate, octocrylene, and ethylhexyl salicylate.

[0038] In some embodiments, the composition further comprises at least one additive, preferably selected from the group consisting of emulsifiers, emollients, viscosity regulators (thickeners), buffering and pH adjustment agents, stabilizers, sensory enhancers, humectants, film formers, UV scattering compounds, UV protection booster compounds, adjuvants, preservatives, perfumes, and combinations thereof.

[0039] In another aspect, provided herein is the use of phenylbenzimidazole sulfonic acid and / or it salts for improving the stability of a sunscreen or daily care composition with photoprotection comprising at least one ester of lactic acid.

[0040] Brief description of the drawings

[0041] Figure 1 depicts the results in terms of pH stability obtained for formulations comprising lauryl lactate without phenylbenzimidazole sulfonic acid (control, formulation A in Table 1 of the experimental section) and lauryl lactate and phenylbenzimidazole sulfonic acid (according to the invention, formulations B and C in Table 1 of the experimental section) when stored at a temperature of 25 °C.

[0042] Figure 2 depicts the results in terms of pH stability obtained for formulations comprising lauryl lactate without phenylbenzimidazole sulfonic acid (control, formulation A in Table 1 of the experimental section) and lauryl lactate and phenylbenzimidazole sulfonic acid (according to the invention, formulations B and C in Table 1 of the experimental section) when stored at a temperature of 40 °C.

[0043] Detailed description

[0044] Before describing preferred embodiments of the present invention in detail, definitions important for understanding the present invention are given.

[0045] As used in this specification and in the appended claims, the singular forms of "a" and "an" also include the respective plurals unless the context clearly dictates otherwise.

[0046] In the context of the present invention, the terms "about" and "approximately" denote an interval of accuracy that a person skilled in the art will understand to still ensure the technical effect of the feature in question. The term typically indicates a deviation from the indicated numerical value of ±20%, preferably ±15%, more preferably ±10%, and even more preferably ±5%.

[0047] It is to be understood that the term "comprising" is not limiting. For the purposes of the present invention, the term "consisting of' is considered to be a preferred embodiment of the term "comprising of'. If hereinafter a group is defined to comprise at least a certain number of embodiments, this is meant to also encompass a group, which preferably consists of these embodiments only.

[0048] Furthermore, the terms "first", "second", "third" or "(i)", "(ii)", "(Hi)", "(iv)" etc. and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances and that the embodiments of the invention described herein are capable of operation in other sequences than described or illustrated herein.

[0049] As used herein the term “free of’ in the context that the composition of the present invention is free of a specific compound or group of compounds, which may be combined under a collective term, means that the composition does not comprise said compound or group of compounds in an amount of more than 0.8 wt.-%, based on the total weight of the composition. Furthermore, it is preferred that the composition according to the present invention does not comprise said compounds or group of compounds in an amount of more than 0.5 wt.-%, preferably the composition does not comprise said compounds or group of compounds at all. The same definition is applied for the term “does not comprise”. Furthermore, it is to be understood that the term “free of’ or “does not comprise”, in case the composition does not comprise a compound X and a compound Y means that the compositions must be free of both compounds X and Y. In other words, the composition may not contain any compound selected from X and Y. When referring to compositions and the weight percent of the therein comprised ingredients it is to be understood that according to the present invention the overall amount of ingredients does not exceed 100 % (± 1 % due to rounding).

[0050] It is to be understood that this invention is not limited to the particular methodology, protocols, reagents etc. described herein as these may vary. It is also to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the present invention that will be limited only by the appended claims. Unless defined otherwise, all technical and scientific terms used herein have the same meanings as commonly understood by one of ordinary skill in the art.

[0051] The term “sunscreen composition” refers to any topical product, which absorbs and may further reflect certain parts of UV radiation. Thus, the term “sunscreen composition” is to be understood as not only including sunscreen compositions, but also any cosmetic compositions that provide UV protection. The term “topical product” refers to a product that is applied to the skin and can refer, e.g., to sprays, lotions, creams, oils, or gels. The sunscreen composition may comprise one or more active UV filtering agents, e.g., organic or inorganic UV filters, as well as other ingredients or additives, e.g., emulsifiers, emollients, viscosity regulators, stabilizers, preservatives, or perfumes.

[0052] A sunscreen composition of the present invention may inter alia be formulated as a water-in-oil (W / O) or an oil-in-water (O / W) dispersion, a vesicular dispersion of an ionic or nonionic amphiphilic lipid, a gel, a biphasic product, a solid stick or an aerosol formulation.

[0053] The term “daily care composition” refers to any topical product which is intended to be used daily without or with a UV protection. In case UV protection is included, it absorbs and may further reflect and scatter certain parts of UV radiation and is used as an everyday care product for the human body, e.g., for face or body, and is, in the context of the present invention, referred to as a “daily care composition with photoprotection”. The daily care composition with photoprotection of the present invention typically comprises, in addition to phenylbenzimidazole sulfonic acid, one or more active agents, e.g., organic and / or inorganic UV filters, as well as other ingredients or additives, e.g., emulsifiers, emollients, viscosity regulators, stabilizers, sensory enhancers, humectants, film formers, UV scattering compounds, UV protection booster compounds, adjuvants, preservatives, or fragrances. Suitable daily care composition with photoprotection according to the present invention are, e.g., leave-on face and body care products. Suitable leave-on products for face and body are, e.g., decorative preparations (or make-up) and skin care preparations.

[0054] Suitable decorative preparations are, e.g., facial make-up in the form of day creams or powder creams, face powder (loose or pressed), dry and moist make-up rouge or cream make-up, eye-care preparations, e.g. eyeshadow preparations, mascara, eyeliner, eye creams or eye-fix creams; lip-care preparations, e.g. lipsticks, rouge lip gloss, lip contour pencils, nail varnishes, and suntan lotions. Suitable skin care preparations are, e.g., moisturizing, refining, and lifting preparations. The cited daily care compositions can be in the form of creams, ointments, pastes, foams, gels, lotions, powders, make-ups, sprays, sticks or aerosols.

[0055] The terms “UV-filter” and “absorber”, as used herein interchangeably, refer to organic or inorganic compounds, which can absorb may further reflect and scatter UV radiation caused by sunlight. UV-filter can be classified based on their UV protection curve as UV-A, UV-B or broadband filters. Preferably, the term “UV filter” comprises or consists of any UV filter as defined in the Annex VI (version of 11 .11 .2022) of the Regulation (EC) No 1223 / 2009 of the European Parliament and of the Council. The term “1 ,3,5-triazine UV filters", as used herein, relates to UV filters that comprise the 1 ,3,5-triazine chemical moiety in their structure. Examples of such compounds are well-known and widely used in the art such as BEMT, EHT, DBT.

[0056] The definition of “broadband” protection (also referred to as broad-spectrum or broad protection) may be based for example on the “critical wavelength” or the UVA-PF (UVA protection factor). For broadband coverage, UV-B and UV-A protection must be provided. According to the US requirements, a critical wavelength of at least 370 nm is required for achieving broad spectrum protection. Furthermore, it is recommended by the European Commission that all sunscreens should have an UVA protection factor, which is at least one third of the labelled sun protection factor (SPF), e.g., if the sunscreen composition has an SPF of 30 the UVA protection factor has to be at least 10.

[0057] The term “critical wavelength” is defined as the wavelength at which the area under the UV protection curve (% protection versus wavelength) represents 90 % of the total area under the curve in the UV region (290- 400 nm). For example, a critical wavelength of 370 nm indicates that the protection of the sunscreen composition is not limited to the wavelengths of UV-B, i.e., wavelengths from 290-320 nm, but extends to 370 nm in such a way that 90 % of the total area under the protective curve in the UV region are reached at 370 nm.

[0058] The term “sun protection factor (SPF)” as used herein indicates how well the skin is protected by a sunscreen composition from an erythema (sunburn) induced mainly from UV-B radiation. In particular, the factor indicates how much longer the protected skin may be exposed to the sun without getting a sunburn in comparison to untreated skin. For example, if a sunscreen composition with an SPF of 15 is evenly applied to the skin of a person usually getting a sunburn after 10 minutes in the sun, the sunscreen allows the skilled person to stay in the sun 15 times longer. In other words, SPF 15 means that 1 / 15 of the burning UV radiation will reach the skin, assuming sunscreen is applied evenly at a thick dosage of 2 milligrams per square centimeter (mg / cm2).

[0059] Water soluble UV filters have a solubility in water of at least 2 wt.-%, preferably at least 3 wt.-%, more preferably at least 5 wt.-%. If no indicated otherwise, all solubilities given herein are at standard conditions, i.e. room temperature (25°C) and atmospheric pressure (1013 mbar). Oil soluble UV filters or “UV filters soluble in at least one cosmetic oil” have a solubility in common cosmetic oils, such as Ci2-Cis-alkyl benzoate, dibutyl adipate, diisopropyl sebacate, phenethyl benzoate, coco- caprylate ( / caprate), propylheptyl caprylate, caprylic / capric triglyceride, cocoglycerides, propylene glycol dicaprylate / dicaprate, butylene glycol dicaprylate / dicaprate, triethyl citrate, isopropyl myristate, isopropyl palmitate, phenox, ethyl caprylate isopropyl lauroyl sarcosinate or dicaprylyl carbonate of at least 2 wt.-%, preferably at least 5 wt.-%, more preferably at least 7 wt.-%.

[0060] If a UV filter is defined as being “oil-soluble” or “soluble in at least one cosmetic oil” herein, this means that it has a solubility of at least 2 wt.-% in any one or more of the afore-mentioned cosmetic oils, i.e., in one or more of Ci2-Cis-alkyl benzoate, dibutyl adipate, diisopropyl sebacate, phenethyl benzoate, coco-caprylate ( / caprate), propylheptyl caprylate, caprylic / capric triglyceride, cocoglycerides, propylene glycol dicaprylate / dicaprate, butylene glycol dicaprylate / dicaprate, triethyl citrate, isopropyl myristate, isopropyl palmitate, phenox, ethyl caprylate isopropyl lauroyl sarcosinate, and dicaprylyl carbonate. In some embodiments, it may have the given solubility in all of the listed cosmetic oils.

[0061] The term insoluble, particulate organic UV filter refers to UV filters that are not soluble in water and not in cosmetic oils. This may mean that their solubility in water and the cosmetic oils mentioned above is below 0.1 wt.-%, for example below 0.01 wt.-%.

[0062] “Phenylbenzimidazole sulfonic acid” and “PBSA”, as used interchangeably herein, relate to 2- phenylbenzimidazole-5-sulfonic acid, also known as ensulizole. “Phenylbenzimidazole sulfonic acid” is the INCI term for said compound. PBSA is a known UVB filter compound, which has very low solubility in water, and is a white odorless solid powder at 25°C. It becomes soluble in water when it is used as a salt. Preferred neutralizing agents are selected from, but not limited to, the organic compounds tromethamine, triethanolamine, tetrahydroxypropyl ethylenediamine, arginine, and aminomethylpropanol. It is understood that whenever reference is made herein to PBSA, said term also includes its salts even if not explicitly referred to.

[0063] It has surprisingly been found by the inventors of the present invention that addition of at least one ester of lactic acid enhances the solubility and performance of UV filters in a sunscreen or daily care composition with photoprotection while addition of phenylbenzimidazole sulfonic acid (PBSA) and / or its salts improves the stability of said composition. More specifically, it has been found that lauryl lactate is particularly well suited for solubilizing solid, for example crystalline, UV filters to be used in sunscreen and daily care compositions with photoprotection. Exemplary UV filters which have been found to have improved solubility in the presence of an lactic acid ester as described herein include, but are not limited to DHHB, EHT and BEMT.

[0064] However, it has also been found that lauryl lactate can cause a lowering of the pH (typically over time) of the formulation, which is highly undesirable because it can affect the stability of the formulation. While said effect may be compensated for by incorporation of buffer systems, it has now been found that phenylbenzimidazole sulfonic acid and / or its salts are similarly suited to reduce or even prevent the undesired pH decrease over time. The combination of lauryl lactate and PBSA and / or its salts thus allows to make use of the advantageous properties of lauryl lactate while avoiding its drawbacks.

[0065] Accordingly, in a first aspect, the present invention provides a sunscreen or daily care composition with photoprotection, comprising:

[0066] (i) at least one ester of lactic acid;

[0067] (ii) phenylbenzimidazole sulfonic acid and / or a salt thereof; and, optionally,

[0068] (iii) at least one UV filter other than phenylbenzimidazole sulfonic acid; wherein the pH of the composition is within the range of 5.0 to 8.0, such as at a pH of 5.0, 5.1 , 5.2, 5.3, 5.4, 5.5, 5.6, 5.7, 5.8, 5.9, 6.0, 6.1 , 6.2, 6.3, 6.4, 6.5, 6.6, 6.7, 6.8, 6.9, 7.0, 7.1 , 7.2, 7.3, 7.4, 7.5, 7.6, 7.7, 7.8, 7.9, or 8.0.

[0069] The pH of the formulations can be measured by any means known and available to those skilled in the art. If not indicated otherwise, the pH of the formulations as such (e.g., as o / w emulsions) filled and stored in a glass bottle was measured herein potentiometrically with a pH meter equipped with a glass electrode (Mettler-Toledo) at 20°C.

[0070] In some embodiments, the pH of the composition is stably within the range of 5.0 or 5.5 to 8.0, such as at a pH Of 5,5, 5.6, 5.7, 5.8, 5.9, 6.0, 6.1 , 6.2, 6.3, 6.4, 6.5, 6.6, 6.7, 6.8, 6.9, 7.0, 7.1 , 7.2, 7.3, 7.4, 7.5, 7.6, 7.7, 7.8, 7.9, or 8.0, when stored at a temperature of about 25 °C, such as maintained within the range of 5.5 to 7.5 when stored at a temperature of about 25 °C.

[0071] In the context of the present invention, the phrase “the pH of the composition is stably within the pH range of is meant to refer to the maintaining of the pH value within the respective range. It may mean that it does not vary from its starting value by more than 0.5, preferably by not more than 0.3 overthe given time period, with said variation still resulting in a pH value within the given range.

[0072] In some embodiments, the pH of the sunscreen or daily care composition with photoprotection according to the present invention is stable within the range of 6.0 to 7.5, when stored at a temperature of about 25 °C.

[0073] In some embodiments, the pH of the composition is stably within the range of above 5.0 to 8.0 for instance at a pH of 5.0, 5.1 , 5.2, 5.3, 5.4, 5,5, 5.6, 5.7, 5.8, 5.9, 6.0,6.1 , 6.2, 6.3, 6.4, 6.5, 6.6, 6.7, 6.8, 6.9, 7.0, 7.1 , 7.2, 7.3, 7.4, 7.5, 7.6, 7.7, 7.8, 7.9, or 8.0, such as within the range of 5.5 to 8.0, when stored at a temperature of about 40 °C.

[0074] “Storing” or “storage” of a composition according to the present invention refers to the keeping of the respective composition after production / preparation thereof, such as in packaged form, for instance in bulk containers or consumer-appropriate containers including (glass) bottles, tubes, flasks, etc., wherein said keeping includes transport of said composition and further includes the keeping of said composition in its respective package or container for further use by the consumer after initial opening of said package or container, such as after first-time use.

[0075] In some particular embodiments, the pH of the composition is maintained stably within the above given ranges or at the given value, e.g., within the range of 5.5 to 8.0, over a storage period of at least one week, preferably at least two weeks, more preferably at least three weeks, even more preferably at least 4, 5, 6, 7, 8, 9, 10, 11 , 12, 13, 14, 15, 16, 17, 18, 19, 20, 21 , 22, 23, 24, 25, 26, 27, 28, 29, 30, 31 , 32, 33, 34, 35, 36, 37, 38, 39, 40, 41 , 42, 43, 44, 45, 46, 47, 48, 49, 50, 51 or 52, 60, 80, 90, 100 or 104 weeks, in particular at 25°C and / or at 40°C or at any temperature in the range between 20 and 40°C, including temperatures that vary within this range over the storage period.

[0076] In the context of the present invention, the term “ester of lactic acid” refers to a compound formed in an esterification reaction of lactic acid and an alcohol compound (ROH) in a condensation reaction, wherein R may be generally selected from (hetero)alkyl, (hetero)aryl, (hetero)alkyl (hetero)aryl, and (hetero)aryl (hetero)alkyl, preferably from alkyl.

[0077] The term “alkyl” refers to monovalent straight chain, branched chain or cyclic hydrocarbon radicals comprising 1 to 30 carbon atoms, preferably straight chain or branched chain radicals comprising 5 to 30 carbon atoms. The term “alkyl” further includes both substituted and unsubstituted alkyl, wherein “substituted” means that one or more hydrogen atoms are replaced with one or more chemical groups selected from -OH and -COOH. An alkyl, as herein defined, may be saturated or unsaturated. The term “heteroalkyl” refers to alkyl, as herein defined, wherein at least one carbon atom is replaced by nitrogen, sulphur or oxygen. Exemplary alkyl, as herein defined, include methyl, ethyl, n-propyl, isopropyl, allyl, n- butyl, isobutyl, sec-butyl, tert-butyl, 1-butenyl, n-pentyl, isopentyl, n-hexyl, 2-ethylhexyl, cyclohexyl, n- heptyl, n-octyl, n-nonyl, n-decyl, n-undecanyl, n-dodecanyl, n-tetradecanyl, n-hexadecanyl, n- heptadecanyl, n-octadecanyl, n-eicosanyl, n-docosanyl, and n-tetracosanyl.

[0078] The term “aryl” refers to a hydrocarbon radical having one or more polyunsaturated carbon rings having aromatic character, (e.g., 4n + 2 delocalized electrons) and comprising 6 up to about 14 carbon atoms, wherein the radical is located on a carbon of the aromatic ring. Exemplary aryl includes phenyl, naphthyl, and indenyl. The term “heteroaryl” refers to aryl, as herein defined, wherein at least one carbon atom is replaced by nitrogen, sulfur or oxygen.

[0079] In various embodiments, R is selected from alkyl and aryl, preferably alkyl, as herein defined. In various embodiments, R is saturated or unsaturated, straight chain or branched chain alkyl and comprises 5 to 25 carbon atoms, preferably 8 to 22 carbon atoms.

[0080] In various embodiments, esters of lactic acid are selected from the group consisting of methyl lactate, ethyl lactate, isopropyl lactate, butyl lactate, isopropyl myristate lactate, oleyl lactate, lauryl lactate, cetyl lactate, myristyl lactate, glyceryl lactate, tridecyl lactate, stearyl lactate, isostearyl lactate, and behenyl lactate, and glycol lactates such as propylene glycol lactate. In preferred embodiments, esters of lactic acid are selected from the group consisting of oleyl lactate, lauryl lactate, cetyl lactate, myristyl lactate, glyceryl lactate, tridecyl lactate, stearyl lactate, isostearyl lactate, and behenyl lactate. In some embodiments, the ester of lactic acid is selected from the group consisting of oleyl lactate, lauryl lactate, and myristyl lactate, preferably lauryl lactate. Mixtures of any of the aforementioned are also envisaged. In some embodiments, the ester of lactic acid is not cetyl lactate.

[0081] In various embodiments, the at least one ester of lactic acid is present in an amount of about 1.0 to 20.0 wt.-%, such as in an amount of 1 .0, 1 .5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 6.5, 7.0, 7.5, 8.0, 8.5, 9.0,

[0082] 9.5, 10.0, 11.0, 12.0, 13.0, 14.0, 15.0, 16.0, 17.0, 18.0, 19.0 or 20.0 wt.-%, for example 1.5 to 20.0, 1.5 to 15.0, 1 .5 to 10.0, preferably about 2.0 to 15 wt.-% or 2.0 to 10.0, more preferably about 2.5 to 15.0 or 2.5 to 10.0 or 3 to 15.0 or 3.0 to 12.0 or 3.0 to 10 wt.-%, based on the total weight of the composition.

[0083] In various embodiments, phenylbenzimidazole sulfonic acid is present in an amount of about 0.5 to 8 wt.- %, such as 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.1 , 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2.0, 2.1 , 2.2, 2.3, 2.4, 2.5,

[0084] 2.6, 2.7, 2.8, 2.9, 3.0, 3.1 , 3.2, 3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 4.0, 4.1 , 4.2, 4.3, 4.4, 4.5, 4.6, 4.7, 4.8, 4.9,

[0085] 5.0, 5.1 , 5.2, 5.3, 5.4, 5.5, 5.6, 5.7, 5.8, 5.9, 6.0, 6.1 , 6.2, 6.3, 6.4, 6.5, 6.6, 6.7, 6.8, 6.9, 7.0, 7.1 , 7.2, 7.3,

[0086] 7.4, 7.5, 7.6, 7.7, 7.8, 7.9, 8.0, wt.%, preferably in an amount of about 0.2 to 5.0 wt.-% or 0.5 to 5.0 wt.-%, or 0.5 to 4.0 wt.-%, or 0.7 to 4.0 wt.-%, or 0.8 to 3.5, wt.-%, or 0.9 to 3.0 wt.-%, or 1 .0 to 3.0 wt.%, or, or 1 .5 to 3.0 wt.-%, based on the total weight of the composition.

[0087] As the at least one additional UV filter, i.e., at least one UV filter other than phenylbenzimidazole sulfonic acid, UVA, UVB, and / or different broadband UV filters may be used. The term “other than PBSA”, as used herein, also excludes all salts of PBSA wherein PBSA is the anion.

[0088] Suitable UV filters other than PBSA may be organic or inorganic, particulate or soluble UV filters.

[0089] Soluble UV filters UV filters may be miscible when they are liquid at 25°C or soluble in a given solvent, such as water or a cosmetic oil when they are solid at 25°C. In some instances, they may be water soluble or oil soluble, as herein defined.

[0090] In contrast to soluble UV filters, the term “particulate UV filter" relates to UV filters that are essentially insoluble in water or (cosmetic) oils, i.e. their solubility in water and the cosmetic oils mentioned above is below 1 wt.-%, for example below 0.5wt.-%.

[0091] The term “organic particulate UV filter” relates to UV filters that can be obtained for example by micronization due to their low water and low oil solubility and are dispersed as a particle in water or in oil.

[0092] Soluble thus means those filters that are oil- and / or water miscible or -soluble. Oil- and / or water-soluble filters as defined herein, i.e., are not present as solids in the compositions, but may be solids (as such, i.e., if not formulated with other compounds) at 25°C. In various embodiments, the additional UV filters to be comprised in the compositions defined herein are UV filters that are solid at 25 °C and / or are soluble in at least one cosmetic oil. In various embodiments, they are both, i.e. solid at 25°C and soluble in at least one cosmetic oil.

[0093] In various embodiments, the at least one additional UV filter comprised in the compositions of the invention comprises or is a non-particulate oil-soluble UV filter. Typical non-particulate oil-soluble UV filter are BEMT, DHHB, EHT, etc. These are also generally encompassed by the term “soluble” UV filters.

[0094] In various embodiments, the at least one additional UV filter comprised in the compositions of the invention comprises or is a non-particulate water-soluble UV filter. Typical non-particulate water-soluble UV filter are TDSA, PBSA, and DPDT. These are also generally encompassed by the term “soluble” UV filters.

[0095] In various embodiments, the at least one additional UV filter comprised in the compositions of the invention comprises or is a particulate oil-insoluble and water-insoluble UV filter. These are generally also referred herein as “particulate” UV filters.

[0096] The at least one additional UV filter comprises or is, in various embodiments, an organic UV filter.

[0097] In various embodiments, the at least one additional UV filter comprises an organic, solid and oil-soluble UV filter. In various alternative or cumulative embodiments, the at least one additional UV filter comprises an organic, solid and particulate UV filter.

[0098] The compositions of the invention may comprise any one or more of the above types of UV filter either individually or in combination as the at least one additional UV filter.

[0099] Suitable UVA filters may be selected from the group consisting of disodium phenyl dibenzimidazole tetrasulfonate, hexyl 2-[4-(diethylamino)-2-hydroxybenzoyl]benzoate (INCI diethylamino hydroxybenzoyl hexyl benzoate), 1-(4-(1 ,1-dimethylethyl)phenyl)-3-(4-methoxyphenyl)propane-1 , 3-dione (INCI butyl methoxydibenzoylmethane, also known as avobenzone), terephthalylidene dicamphor sulfonic acid (TDSA), methoxypropylamino cyclohexenylidene ethoxyethylcyanoacetate (MCE), and combinations thereof.

[0100] Suitable UVB filters may be selected from the group consisting of 4,4',4"-(1 ,3,5-triazine-2,4,6- triyltriimino)tris-benzoic acid-tris(2-ethylhexyl)ester (INCI ethylhexyl triazone), 4,4'-[[6-[[4-[[(1 , 1 - dimethylethyl)amino]carbonyl]phenyl]amino]-1 ,3,5-triazin-2,4-diyl]diimino]bis-benzoic acid-bis(2- ethylhexyl)ester (INCI diethylhexyl butamido triazone), and combinations thereof.

[0101] Suitable broadband UV filters may be selected from the group consisting of bis-ethylhexyloxyphenol methoxyphenyl triazine (INCI bis-ethylhexyloxyphenol methoxyphenyl triazine), 2-(2H-benzotriazol-2-yl)-6- [(2-ethylhexyloxy)methyl]-4-methylphenol, 2-(2H-benzotriazol-2-yl)-4-methyl-6-[2-methyl-3-[1 , 3,3,3- tetramethyl-1-[(trimethylsilyl)oxy]-1-disiloxanyl]propyl]phenol (INCI drometrizole trisiloxane), 2,2'- methylenbis[6-(2H-benzotriazol-2-yl)-4-(1 ,1 ,3,3-tetramethylbutyl)phenol] (INCI methylene Bis- benzotriazolyl tetramethylbutylphenol), phenylene bis-diphenyltriazine (PBDT), benzophenone-3 and combinations thereof.

[0102] Suitable organic particulate UV filters ( / .e., insoluble, organic UV filters) may be selected from the group consisting of 2,2'-methylene bis[6-(2H-benzotriazol-2-yl)-4-(1 ,1 ,3,3-tetramethylbutyl)phenol] (INCI methylene bis-benzotriazolyl tetramethylbutylphenol), 2,4,6-tris(biphenyl-4-yl)-1 ,3,5-triazine (INCI trisbiphenyl triazine), 1 ,1 ’-(1 ,4-piperazinediyl)bis[1 -[2-[4-(diethylamino)-2-hydroxybenzoyl]phenyl]- methanone (INCI bis-(diethylaminohydroxybenzoyl benzoyl) piperazine), 5,6,5’,6’-tetraphenyl-3-3’-(1 ,4- phenylene)bis(1 ,2,4-triazine) (INCI phenylene bis-diphenyltriazine; PBDT), 1 ,4-di(benzoxazole-2’- yl)benzene and combinations thereof. Further examples of suitable organic particulate UV filters are described e.g. in WO9703643, W02009077356 and WO2015155158. Preferably, the particulate UV filters have a particle size DN50 determined by light scattering of less than 2000 nm, preferably less than 1000 nm, wherein DN50 refers to the particle size value, where half of the population lies below this value, and half of the population lies above this value, i.e., the median value of the particle size volume distribution.

[0103] Inorganic UV filters include titanium dioxide, zinc oxide, iron oxide, cerium oxide and mixtures thereof. In various embodiments, the inorganic UV filters may be applied as a nano material. In this connection it is to be understood that the term “nano material” follows the recommendation of the European Commission 2011 / 696 / EU. Accordingly, in a nano material 50 % of particles, based on a number-based size distribution, are smaller than 100 nm, including constituent particles in aggregates or agglomerates. In another embodiment of the present invention, the inorganic UV filters may be applied as a non-nano material. Accordingly, in a non-nano material more than 50 % of the particles, based on a number-based size distribution, are larger than 100 nm. It is also possible to use mixtures of nano and non-nano inorganic UV filters. Furthermore, the inorganic UV filters may be coated or uncoated. If present, titanium dioxide is preferably coated, as uncoated titanium dioxide is photocatalytic and should be avoided in sunscreens. Coatings suitable in the context of inorganic UV filters may be organic and / or inorganic and are, for instance, disclosed in WO 2023 / 036749 A1 .

[0104] In various embodiments, the composition comprises bis-ethylhexyloxyphenol methoxyphenyl triazine (BEMT).

[0105] In various embodiments, the composition comprises diethylamino hydroxybenzoyl hexyl benzoate (DHHB).

[0106] In various embodiments, the composition comprises butyl methoxydibenzoylmethane (BMDBM).

[0107] In various embodiments, the composition comprises ethylhexyl triazone (EHT).

[0108] In various embodiments, the composition comprises methylene bis-benzotriazolyl tetramethylbutylphenol (MBBT). In various embodiments, the composition comprises tris-biphenyl triazine (TBPT).

[0109] In various embodiments, the composition comprises methoxypropylamino cyclohexenylidene ethoxyethylcyanoacetate (MCE).

[0110] In various embodiments, the composition is free of octocrylene.

[0111] In various embodiments, the composition is free of ethylhexyl salicylate.

[0112] In various embodiments, the composition is free of homosalate.

[0113] In various embodiments, the composition is free of ethylhexyl methoxycinnamate (EHMC).

[0114] In various embodiments, the composition is free of any two or more, preferably three or more, more preferably all of octocrylene, ethylhexyl salicylate, homosalate and ethylhexyl methoxy cinnamate (EHMC).

[0115] In various embodiments, the composition comprises, in addition to phenylbenzimidazole sulfonic acid, at least one UVA filter, such as DHHB or BMDBM or MCE, and at least one UVB filter, such as EHT.

[0116] In various embodiments, the composition comprises, in addition to phenylbenzimidazole sulfonic acid, at least one broadband UV filter, such as BEMT, and at least one UVA filter, such as DHHB or BMDBM or MCE.

[0117] In various embodiments, the composition comprises, in addition to phenylbenzimidazole sulfonic acid, at least one broadband UV filter, such as BEMT, and at least one UVB filter, such as EHT.

[0118] In various embodiments, the composition comprises, in addition to phenylbenzimidazole sulfonic acid, at least one broadband UV filter, such as BEMT, and at least one UVA filter, such as DHHB or BMDBM or MCE, and at least one UVB filter, such as EHT.

[0119] In various embodiments, the composition comprises, in addition to phenylbenzimidazole sulfonic acid, at least one particulate UV filter, such as MBBT, PBDT or TBPT, and at least one UVA filter, UVB filter and / or broadband UV filter, such as any one or more of DHHB, BMDBM, MCE, EHT, and BEMT. The composition may thus comprise combinations of MBBT and BEMT, MBBT and EHT, and MBBT and DHHB or BMDBM or MCE. Further, a particulate UV filter, such as MBBT, may be used in combination with any combination of UVA, UVB and broadband UV filters disclosed in various embodiments above.

[0120] In various embodiments, the composition comprises, in addition to phenylbenzimidazole sulfonic acid, at least two or all three of DHHB, EHT, and BEMT. In various embodiments, the composition thus comprises PBSA and / or a salt thereof, DHHB, BEMT and EHT as UV filters. DHHB, EHT and BEMT have been found to be particularly well susceptible to the beneficial impact of lauryl lactate on their solubility. In various embodiments, the sunscreen or daily care composition with photoprotection comprises a total of 2.0 to 40 wt.-%, such as 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0, 10.0, 11.0, 12.0, 13.0, 14.0, 15.0, 16.0, 17.0, 18.0, 19.0, 20.0, 21.0, 22.0, 23.0, 24.0, 25.0, 26.0, 27.0, 28.0, 29.0, 30.0, 31.0, 32.0, 33.0, 34.0, 35.0, 36.0, 37.0, 38.0, 39.0, or 40.0 wt.-% of UV filters, including phenylbenzimidazole sulfonic acid, preferably of 3.0, 4.0, 5.0, 6.0, 7.0 or 8.0 to 35.0 wt.-%, more preferably of 5.0, 6.0, 7.0, 8.0, 9.0, or 10.0 to 30.0 wt.-% or of 10.0 to 35.0 wt.-%, still more preferably of 8.0 to 25.0 wt.-%, and in particular of 8.0 to 20.0 wt.-%, based on the total weight of the sunscreen or daily care composition.

[0121] In various embodiments, the composition comprises, in addition to phenylbenzimidazole sulfonic acid, at least one broadband UV filter, such as BEMT, preferably in an amount of from 0.5 to 10.0 wt.-%, such as 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 6.0, 7.0, 8.0, 9.0, or 10.0 wt.-%, more preferably in an amount of from 1 .0, 1 .5, or 2.0 to 4.0, 4.5, 5.0, 5.5, or 6.0 wt.-%, based on the total weight of the sunscreen or daily care composition.

[0122] In various embodiments, the composition comprises, in addition to phenylbenzimidazole sulfonic acid, at least one UVA filter, such as DHHB or BMDBM or MCE.

[0123] For instance but without limitation, in various embodiments, DHHB is comprised in an amount of from 0.5 to 10 wt.-% such as 0.5, 0.6, 0.7, 0.8, 0.9, 1 .0, 1 .5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 6.0, 7.0, 8.0, 9.0, or 10.0 wt.-%, more preferably in an amount of from 1 .0, 1 .5, or 2.0 to 4.0, 4.5, 5.0, 5.5, 6.0, 6.5, 7.0, 7.5, 8.0, 8.5, or 9.0 wt.-%, based on the total weight of the sunscreen or daily care composition.

[0124] In various further embodiments, BMDBM is comprised in an amount of from 0.5 to 5 wt.-% such as 0.5, 0.6, 0.7, 0.8, 0.9, 1 .0, 1 .5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5 or 5.0 wt.-%, more preferably in an amount of from 1 .0, 1 .5, or 2.0 to 4.0, 4.5, or 5.0 wt.-%, based on the total weight of the sunscreen or daily care composition.

[0125] In other embodiments, MCE is comprised in an amount of from 0.5 to 3 wt.-% such as 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.5, 2.0, 2.5 or 3.0 wt.-%, more preferably in an amount of from 1.0, 1.5, or 2.0 to 3.0wt.-%, based on the total weight of the sunscreen or daily care composition.

[0126] In various embodiments, the composition comprises, in addition to phenylbenzimidazole sulfonic acid, at least one UVB filter, such as EHT, preferably in an amount of from 0.5 to 5.0 wt.-%, such as 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, or 5.0wt.-%, more preferably in an amount of from 1.0to 4.0wt.- %, based on the total weight of the sunscreen or daily care composition.

[0127] In various embodiments, the composition comprises, in addition to phenylbenzimidazole sulfonic acid, at least one particulate UV filter, such as MBBT, PBDT, or TBPT, preferably in an amount of from 0.5 to 10.0 wt.-%, such as 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 6.0, 7.0, 8.0, 9.0, or 10.0 wt- %, more preferably in an amount of from 1 .0, 1 .5, or 2.0 to 4.0, 4.5, 5.0, 5.5, 6.0, 6.5, 7.0, 7.5, 8.0, 8.5, or 9.0 wt.-%, based on the total weight of the sunscreen or daily care composition. In various embodiments, the composition comprises, relative to its total weight:

[0128] (i) phenylbenzimidazole sulfonic acid (PBSA) and / or a salt thereof in an amount of 0.5 to 8.0 wt.-%, for example 1 .0 to 5.0 wt.-%;

[0129] (ii) BEMT in an amount of from 0.5 to 10 wt.-%, for example 2.0 to 6.0 wt.-%;

[0130] (iii) DHHB, in an amount of from 0.5 to 8.0 wt.-%, for example 1 .5 to 7.0 wt.-%;

[0131] (iv) EHT, in an amount of from 0.5 to 5.0 wt.-%, for example 1 .0 to 4.0 wt.-%; and, optionally,

[0132] (v) at least one organic particulate UV filter selected from the group consisting of MBBT, TBPT, PBDT, preferably MBBT and TBPT, in an amount of from 0.5 to 10.0 wt.-%, for example 1 .0 to 8.0 wt.-% or 1.5 to 5.0 wt.-%.

[0133] The total amount of UV filters in these compositions may be 2.0 to 40.0 wt.-% or 2.0 to 35.0 wt.-%, such as 5.5 to 27 wt.-%. In various embodiments, the amount of broadband and UVA filters is selected such that the UVA-PF is at least 33 % of the SPF, preferably at least 35% of the total SPF.

[0134] In various embodiments, the weight ratio of phenylbenzimidazole sulfonic acid (and / or its salts) to the one or more UV filters other than phenylbenzimidazole sulfonic acid (and / or its salts) may be in the range of 1 :20 to 1 :3, preferably in the range of 1 :19 to 1 :3, such as in the range of 1 :18 to 1 :4, for example in the range of 1 :17 to 1 :6, 1 :16 to 1 :7, 1 :15 to 1 :8, 1 :14 to 1 :9, 1 :13 to 1 :10, or 1 :12 to 1 :11.

[0135] In various embodiments, the weight ratio of the at least one ester of lactic acid, in particular lauryl lactate, and the phenylbenzimidazole sulfonic acid and / or the salt thereof (ii) is 1.0:2.0 to 5.0:1.0 or 1.0:1.5 to 4.5:1 .0, preferably 1 .0:1 .2 to 4.0:1 .0, more preferably 1 .0:1.0 to 3.0:1 .0 or 1 .0:1.0 to 2.0:1 .0 or 1 .0:1 .0 to 1.8:1.0. The weight ratio is of relevance to ensure that the PBSA or alt thereof can exert its stabilizing influence on the lauryl lactate and the pH of the composition.

[0136] In various embodiments, the composition of the present invention is a buffer-free system, the term “buffer system” referring to a combination of a weak acid and its conjugate base or to a combination of a weak base and its conjugate acid. Particularly, in some embodiments, the compositions of the present invention are free of a phosphate buffer system, a carbonate buffer system, an acetate buffer system, a citrate buffer system, an ammonium buffer system, a borate buffer system, a triethanolamine buffer system, a tartrate buffer system, and combinations thereof.

[0137] In some embodiments, the composition is free of at least one or more of parabenes and organic UV filter compounds selected from the group of homomethyl salicylate, ethylhexyl methoxycinnamate, octocrylene, and ethylhexyl salicylate. In some embodiments, the sunscreen or daily care composition with photoprotection is free of parabens. In various embodiments, the sunscreen or daily care composition with photoprotection is free of homomethyl salicylate. In various embodiments, the sunscreen or daily care composition with photoprotection is free of ethylhexyl methoxycinnamate. In various embodiments, the sunscreen or daily care composition with photoprotection is free of octocrylene. In various embodiments, the sunscreen or daily care composition with photoprotection is free of ethylhexyl salicylate. In various embodiments, the sunscreen or daily care composition with photoprotection is free of homomethyl salicylate, ethylhexyl methoxycinnamate, octocrylene, and ethylhexyl salicylate. In various embodiments, the sunscreen or daily care composition with photoprotection is free of parabenes and organic UV filter compounds selected from the group of homomethyl salicylate, ethylhexyl methoxycinnamate, octocrylene, and ethylhexyl salicylate.

[0138] In various embodiments, the sunscreen or daily care composition with photoprotection provides a SPF of more than 15, preferably of more than 30. In another preferred embodiment of the present invention, the sunscreen or daily care composition with photoprotection provides a SPF of more than 50, preferably of more than 60. In another preferred embodiment of the present invention, the sunscreen or daily care composition with photoprotection provides a SPF of more than 90. The SPF may be determined according to any method known in the art.

[0139] Further, in connection with the above embodiments, it is to be understood that the sunscreen or daily care composition with photoprotection may comprise at least one additive.

[0140] In one embodiment, the at least one additive is selected from the group consisting of emulsifiers, emollients, viscosity regulators (thickeners), buffering and pH adjustment agents, stabilizers, sensory enhancers, humectants, film formers, UV scattering compounds, UV protection booster compounds, adjuvants such as vitamins, antioxidants, chelating agents, preservatives, perfumes, and combinations thereof.

[0141] Preferred O / W emulsifiers include, without limitation, glucose derivatives such as cetearyl glucoside, arachidyl glucoside, lauryl glucoside, polyglyceryl-3 methylglucose distearate, methyl glucose sesquistearate; sucrose derivative such as sucrose polystearate, sucrose palmitate; sorbitol derivatives such as polysorbate derivatives; inulin derivatives such as inulin lauryl carbamate; glycerides of fatty acids such as glyceryl stearate, glyceryl stearate SE, glyceryl stearate citrate, glumatic acid derivatives such as sodium stearoyl glutamate; sulfosuccinic acid derivatives such as disodium cetearyl sulfosuccinate; phosphoric acid derivatives such as potassium cetyl phosphate, ceteh-10 phosphate, C20-22 alkyl phopshate; fatty acid esters of polyglyceryl such as polyglyceryl-3-diisostearate, polyglyceryl-2- dipolyhydroxystearate; polyglyceryl- 10 stearate oxyalkenylated fatty alcohol such as ceteareth-20, steareth-21 , beneheth-25 oxyalkenylated fatty acid such as PEG-100 stearate oxyalkenylated organomodified silicone I polysiloxane I polyalkyl / polyether copolymers and derivatives. ethoxylated fatty acid soap phospholipids based such as lecithin derivatives

[0142] Preferred emulsifiers to form a W / O emulsion include, without limitation, glycerides of fatty acids such glyceryl oleate, sorbitan laurate sorbitan esters such as sorbitan oleate fatty acid esters of polyglyceryl such as polyglyceryl-3-diisostearate, polyglyceryl-2- dipolyhydroxystearate, polyglyceryl-4 isostearate

[0143] Oxyakenylated fatty alcohol such steareth-2

[0144] Oxyakenylated fatty acid such as PEG-30 dipolyhydroxystearate organomodified silicone / polysiloxane I polyalkyl I polyether copolymers and derivatives such as cetyl dimethicone copolyol, cetyl PEG / PPG-10 / 1 Dimethicone, PEG-10 dimethicone

[0145] Preferred emollients include esters of linear or branched fatty acids with linear or branched fatty alcohols such as propylheptyl caprylate, coco caprylate, isopropyl myristate, ethylhexyl palmitate; esters of aromatic carboxylic acids with linear or branched fatty alcohols such as C12-C15-alkyl benzoate, ethylhexyl benzoate, phenethyl benzoate; dicarboxylic acid esters with linear or branched alcohols such as dibutyl adipate, dicaprylyl carbonate, diisopropyl sebacate; esters of hydroxycarboxylic acids with linear or branched fatty alcohols; esters of linear or branched fatty acids with polyhydric alcohol such as butylene glycol dicaprylate / dicaprate; mono-, di-, tri-glycerides based on C6-C18 fatty acids such as caprylic / capric triglycerides, coco glycerides; guerbet alcohols such as octyldodecynol; hydrocarbons such as hydrogenated polyisobutene, mineral oil, squalene, isohexadecane; ethers such as dicaprylyl ether; silicone derivatives (organomodified polysiloxanes) such as dimethylpolysiloxane, cyclic silicones.

[0146] Preferred lipophilic thickeners include, without limitation, fatty alcohols such as cetyl alcohol, cetearyl alcohol, stearyl alcohol; behenyl alcohol fatty acids such as stearic acid; palmitic acid fatty acid esters such as myristyl stearate, pentaerythrityl distearate, cetyl palmitate; Tribehenin, dextrin palmitate waxes such as beeswax, carnauba wax, microcrystalline wax, ceresin, ozocerite; Oryza Sativa bran wax, sunflower wax hydrogenated vegetable oil, hydrogenated castor oil, hydrogenated vegetable glycerides, hydrogenated castor oil / sebacic acid copolymer silica based derivatives such as silica, silica dimethyl silylate

[0147] Buffering / pH adjustment agents include, without limitation, buffer systems, such as selected from phosphate buffer systems (such as disodium hydrogen phosphate / monosodium dihydrogen phosphate), carbonate buffer systems (such as sodium bicarbonate / carbonic acid), acetate buffer systems (such as acetic acid / sodium acetate), citrate buffer systems (such as citric acid / sodium citrate), ammonium buffer systems (such as ammonia / ammonium chloride), borate buffer systems (such as boric acid / sodium borate), triethanolamine buffer systems, and tartrate buffer systems (such as tartaric acid / potassium bitartrate), acids such as acetic acid, citric acid, lactic acid, tartaric acid, and glutamic acid; bases such as sodium hydroxide, magnesium hydroxide, and triethanolamine.

[0148] Hydrophilic stabilizers / thickeners include, without limitation, natural gums such as xanthan gum, tara gum, carrageenan, guar gum, agar gum, alginates, gellan gum silicate derivatives such as magnesium aluminium silicates; cellulose derivatives such as hydroxypropyl cellulose, microcrystalline cellulose starch derivatives such as hydroxypropyl starch phosphate polyacrylates or homopolymers of reticulated acrylic acids or polyacrylamides such as carbomers, acrylate copolymers, acrylate / C10-C30-alkyl acrylate crosspolymer, acrylate / beheneth-25 methacrylate copolymer

[0149] Also included may be UV protection scattering compounds. These include, without limitation: microcrystalline cellulose; calcium carbonate; hydroxyapatite; silica. hollow sphere such as Styrene / Acrylates Copolymer

[0150] Also included may be UV protection booster compounds. These include, without limitation: benzotriazolyl dodecyl p cresol, ethylhexyl methoxycrylene, polyester-8, diethylhexyl syringylidenemalonate, trimethoxybenzylidene pentanedione, diethylhexyl 2,6-naphthalate,

[0151] Bis(Cyano Butylacetate) 10 Anthracenediylidene, polyester-25, butyloctyl salicylate.

[0152] Further components may belong to the class of film formers and film forming enhancers. Such compounds include, without limitation, hydrogenated dimer dilinoleyl / dimethylcarbonate copolymer; diisostearoyl polyglyceryl-3 dimer dilinoleate; polyglyceryl-3 stearate / sebacate crosspolymer; cellulose derivatives, such as methylcellulose and ethylcellulose; capryloyl glycerin / sebacic acid copolymer. Preferred sensory enhancers include polyamide derivatives such as nylon-12; polymethyl methacrylates; silica; mica; polymethylsilsesquioxane; polyethylene; starch derivatives such as aluminum starch octenylsuccinate; dimethicone derivatives; boron nitride;

[0153] HDI / trimethylol hexyllactone crosspolymer.

[0154] Preferred humectants include polyols such as:

[0155] - glycerin; butylene glycol; propylene glycol; sorbitol beta-glucan;

[0156] 1 ,2 pentadiol;

[0157] 1 ,2 hexandiol;

[0158] 1 ,2 octandiol;

[0159] 1 ,2 decandiol;

[0160] 2-Methyl-1 ,3-propandiol.

[0161] Preferred adjuvants include ethanol dyes pigments such as iron oxides tocopherol derivatives; retinol derivatives; ascorbic acid derivatives; bisabolol; allantoin; panthenol; chelating agents (EDTA, EDDS, EGTA, phytic acid, piroctone olamine); ethylhexyl glycerin; hydroxyacetophenone; caprylhydroxymic acid; propellants such as propane, butane, isobutene, dimethyl ether; styrene / PVP or styrene acrylamide copolymers; insect repellants such as butylacetylaminopropionate.

[0162] Preferred preservatives include benzyl alcohol; zingerone.

[0163] Preferred perfumes are selected from the group consisting of limonene, citral, linalool, alpha- isomethylionon, geraniol, citronellol, 2-isobutyl-4-hydroxy-4-methyltetrahydropyrane, 2-tert.- pentylcyclohexylacetate, 3-methyl-5-phenyl-1 -pentanol, 7-acetyl-1 ,1 ,3,4,4,6-hexamethyltetraline, adipine acid diester, alpha-amylcinnamaldehyde, alpha-methylionon, amyl C butylphenylmehtylpropionalcinnamal, amylsalicylate, amylcinnamylalcohol, anisalcohol, benzoin, benzylalcohol, benzylbenzoate, benzylcinnamate, benzylsalicylate, bergamot oil, bitter orange oil, butylphenylmethylpropioal, cardamom oil, cedrol, cinnamal, cinnamylalcohol, citronnellylmethylcrotonate, lemon oil, coumarin, diethylsuccinate, ethyllinalool, eugenol, evernia furfuracea extracte, evernia prunastri extracte, farensol, guajak wood oil, hexylcinnamal, hexylcalicylate, hydroxycitronellal, lavender oil, lemon oil, linaylacetate, mandarine oil, menthyl PCA, methylheptenone, nutmeg oil, rosemary oil, sweet orange oil, terpineol, tonka bean oil, triethylcitrate, vanillin and combinations thereof.

[0164] In connection with the above preferred embodiments, it is to be understood that if the sunscreen or daily care composition with photoprotection comprises two or more additives, combinations of the additives as defined above are also part of the invention.

[0165] The final formulations of the sunscreen or daily care composition with photoprotection may exist in a wide variety of presentation forms, for example: in the form of emulsions as a W / O, O / W, oil-in-water-in-oil (O / W / O), water-in-oil-in water (W / O / W) or phase-inversion-technology (PIT) emulsion, a polymeric-based emulsion, and all kinds of microemulsions. The final formulations can be provided in different forms such as a gel, a cream, milk or lotion, in the form of a powder, in the form of a stick, in the form of a bi-phase, in the form of a spray (spray with propellant gas or pump-action spray) or an aerosol, in the form of a foam, or in the form of a paste.

[0166] Typically, the sunscreen or daily care composition with photoprotection comprises water in an amount of more than 5 wt.-%, such as within the range of about 5.5 to 95 wt.-%, such as within the range of 10 to 90 wt.-%, for instance within the range of 15 to 85 wt.-%, based on the total weight of the composition.

[0167] For instance, when formulated as a water-in oil or an oil-in-water dispersion, an optional cosmetically acceptable carrier preferably comprises 5 to 50 % of an oil phase, 1 to 10 % of an emulsifier and 30 to 90 % of water, each by weight based on the total weight of the carrier. The oil phase may comprise any oil conventionally used in cosmetic formulations.

[0168] In connection with the above embodiments, it is to be understood that the sunscreen or daily care compositions are in particularly suitable for protection of the skin from UV radiation. Hence, the present invention further relates to the sunscreen or daily care composition, as defined herein, for use in protecting the human skin from UV radiation. The present invention further relates to a method of protecting the human skin from UV radiation by administration ofthe sunscreen ordaily care composition, as defined herein.

[0169] In a further aspect, the present invention relates to the use of PBSA and / or a salt thereof for improving the stability of a sunscreen or daily care composition with photoprotection comprising at least one ester of lactic acid and optionally further comprising at least one UV filter other than PBSA.

[0170] “Improving the stability”, as used herein, preferably relates to a measurable increase in stability relative to the same system in which no phenylbenzimidazole sulfonic acid and / or salts thereof are used and in which lauryl lactate is used. Particularly, in various embodiments, “improving the stability” means that the pH of the composition is stably within the range of 5.0 to 8.0, such as at a pH of 5,5, 5.6, 5.7, 5.8, 5.9, 6.0, 6.1 ,

[0171] 6.2, 6.3, 6.4, 6.5, 6.6, 6.7, 6.8, 6.9, 7.0, 7.1 , 7.2, 7.3, 7.4, 7.5, 7.6, 7.7, 7.8, 7.9, or 8.0, when stored at a temperature of about 25 °C, such as maintained within the range of 5.5 to 7.5 when stored at a temperature of about 25 °C, as herein defined.

[0172] In some embodiments, said use is for improving the pH stability of the composition and maintains the pH of the composition within the range of 5.5 to 8.0 when stored at a temperature of about 25 °C.

[0173] In some further embodiments, said use is for improving the pH stability of the composition and maintains the pH of the composition within the range of 6.0 to 7.5 when stored at a temperature of about 25 °C.

[0174] In some other embodiments, said use is for improving the pH stability of the composition and maintains the pH of the composition within the range of above 5.0 to 8.0, for instance 5.0, 5.1 , 5.2, 5.3, 5.4, 5.5, 5.1 , 5.2,

[0175] 5.3, 5.4, 5.5 5.6, 5.7, 5.8, 5.9, 6.0, 6.1 , 6.2, 6.3, 6.4, 6.5, 6.6, 6.7, 6.8, 6.9, 7.0, 7.1 , 7.2, 7.3, 7.4, 7.5, 7.6, 7.7, 7.8, 7.9, or 8.0, such as within the range of 5.5 to 8.0, when stored at a temperature of about 40 °C.

[0176] In some particular embodiments, said use is for improving the pH stability ofthe composition and maintains the pH of the composition within the range of 5.5 to 7.5, when stored at a temperature of about 25 °C, for a period of at least one week, preferably at least two weeks, more preferably at least three weeks, even more preferably at least 4, 5, 6, 7, 8, 9, 10, 11 , 12, 13, 14, 15, 16, 17, 18, 19, 20, 21 , 22, 23, 24, 25, 26, 27, 28, 29, 30, 31 , 32, 33, 34, 35, 36, 37, 38, 39, 40, 41 , 42, 43, 44, 45, 46, 47, 48, 49, 50, 51 or at least 52 weeks. Accordingly, in some embodiments, the period of storage is at least one week, preferably at least two weeks, more preferably at least four weeks, or at least 5, 6, 7, 8, 9, 10, 11 , 12, 13, 14, 15, 16, 17, 18, 19, 20, 21 , 22, 23, 24, 25, 26, 27, 28, 29, 30, 31 , 32, 33, 34, 35, 36, 37, 38, 39, 40, 41 , 42, 43, 44, 45, 46, 47, 48, 49, 50, 51 , 52, 55, 60, 80, 90, 100, 104, or 116 weeks.

[0177] In various embodiments, said use is for improving the pH stability of the composition and maintains the pH of the composition within the range of 5.0 to 8.0 when stored at a temperature of about 40 °C for a period of at least one week, preferably at least two weeks, more preferably at least three weeks, even more preferably at least four weeks, for example up to 20 weeks.

[0178] It is to be understood that the above embodiments of the sunscreen or daily care composition with photoprotection are also applicable for the uses and the methods according to the present invention, and vice versa.

[0179] The present invention is further illustrated by the following non-limiting examples. Examples

[0180] Example 1

[0181] Table 1: Test formulations A-C, SPF in silico 50 Heat part A and B to 75°C under magnetic stirring. Add part A into B under stirring, then homogenize with an Ultra Turrax type device. Cool down, below 40°C, add part C then part D (previously prepared by mixing), then add part E. The results obtained with the above formulations in terms of pH stability are depicted in Figure 1 (storage temperature 25 °C) and Figure 2 (storage temperature 40 °C). The combination auf lauryl lactate with PBSA as UV filter provides for stable formulations even at elevated temperatures over prolonged periods of time, in contrast to the same formulations without PBSA.

Claims

Claims1 . A sunscreen or daily care composition with photoprotection, comprising:(i) at least one ester of lactic acid in an amount of 1 .5 to 20 wt.-% based on the total weight of the composition;(ii) phenylbenzimidazole sulfonic acid and / or a salt thereof in an amount of 0.5 to 8 wt.-% based on the total weight of the composition; and(iii) at least one UV filter other than phenylbenzimidazole sulfonic acid, wherein said at least one UV filter other than phenylbenzimidazole sulfonic acid comprises at least bis-ethylhexyloxyphenol methoxyphenyl triazine (BEMT), preferably in an amount of from 0.5 to 10 wt.-% based on the total weight of the composition; wherein the pH of the composition is within the range of 5.0 to 8.0; and wherein the weight ratio of (i) to (ii) is 1 :2 to 5:1 .

2. The sunscreen or daily care composition with photoprotection according to claim 1 , wherein the pH of the composition is maintained within the range of 5.0 to 8.0, preferably 5.5 to 7.5, over a storage period of at least one week at a temperature of about 25 °C or at about 40°C.

3. The sunscreen or daily care composition with photoprotection according to any one of the preceding claims, wherein the at least one ester of lactic acid and / or salt thereof is selected from the group consisting of oleyl lactate, lauryl lactate, myristyl lactate, glyceryl lactate, tridecyl lactate, stearyl lactate, isostearyl lactate, and behenyl lactate, preferably lauryl lactate.

4. The sunscreen or daily care composition with photoprotection according to any one of the preceding claims, wherein the at least one ester of lactic acid and / or salt thereof is present in an amount of 2 to 15 wt.-%, preferably 3 to 10 wt.-%, based on the total weight of the composition.

5. The sunscreen or daily care composition with photoprotection according to any one of the preceding claims, wherein phenylbenzimidazole sulfonic acid and / or salt thereof is present in an amount of 0.7 to 5.0 wt.-%, preferably 1.0 to 4.0 wt.-% or 1.5 to 3.0 wt.-%, based on the total weight of the composition.

6. The sunscreen or daily care composition with photoprotection according to any one of the preceding claims, wherein the weight ratio of the at least one ester of lactic acid and the phenylbenzimidazole sulfonic acid and / or the salt thereof is 1 :1.5 to 4.5:1 , preferably 1 :1.2 to 4:1 , more preferably 1 :1 to 3:1 or 1 :1 to 2:1.

7. The sunscreen or daily care composition with photoprotection according to any one of the preceding claims, wherein the composition comprises the least one UV filter other than PBSA in an amount of 2 to 40 wt.-%, preferably of 5 to 35 wt.-%, more preferably of 5 to 30 wt.-%, still more preferably of 5 to 25 wt-%, and in particular of 8 to 20 wt.-%, based on the composition.

8. The sunscreen or daily care composition with photoprotection according to any one of the preceding claims, wherein the at least one UV filter other than PBSA comprises in addition to BEMT(1) a UV filter that is solid at 25°C;(2) a UV filter that is soluble in at least one cosmetic oil;(3) an organic UV filter; and / or(4) a particulate UV filter.

9. The sunscreen or daily care composition with photoprotection according to any one of the preceding claims, wherein the at least one UV filter other than PBSA is solid at 25°C and soluble in at least one cosmetic oil.

10. The sunscreen or daily care composition with photoprotection according to any one of the preceding claims, wherein the composition comprises, in addition to phenylbenzimidazole sulfonic acid, at least one UVA filter, preferably selected from the group consisting of disodium phenyl dibenzimidazole tetrasulfonate (DPDT), hexyl 2-[4-(diethylamino)-2-hydroxybenzoyl]benzoate (INCI diethylamino hydroxy benzoyl hexyl benzoate, DHHB), 1-(4-(1 ,1-dimethylethyl)phenyl)-3-(4- methoxyphenyl)propane-1 , 3-dione (INCI butyl methoxydibenzoylmethane, BMDBM), methoxypropylamino cyclohexenylidene ethoxyethylcyanoacetate (MCE), terephthalylidene dicamphor sulfonic acid (TDSA), and combinations thereof; and / or at least one UVB filter, preferably selected from the group consisting of 4,4',4"-(1 ,3,5-triazine- 2,4,6-triyltriimino)tris-benzoic acid-tris(2-ethylhexyl)ester (INCI ethylhexyl triazone, EHT), 4,4'-[[6-[[4- [[(1 ,1-dimethylethyl)amino]carbonyl]phenyl]amino]-1 ,3,5-triazin-2,4-diyl]diimino]bis-benzoic acid- bis(2-ethylhexyl)ester (INCI diethylhexyl butamido triazone, DBT), and combinations thereof; and / or at least one broadband UV filter, preferably selected from the group consisting of 2-(2H- benzotriazol-2-yl)-6-[(2-ethylhexyloxy)methyl]-4-methylphenol, 2-(2H-benzotriazol-2-yl)-4-methyl-6- [2-methyl-3-[1 ,3,3,3-tetramethyl-1-[(trimethylsilyl)oxy]-1-disiloxanyl]propyl]phenol (INCI drometrizole trisiloxane, DTS), 2,2'-methylenbis[6-(2H-benzotriazol-2-yl)-4-(1 ,1 ,3,3-tetramethylbutyl)phenol] (INCI methylene Bis-benzotriazolyl tetramethylbutylphenol, MBBT), phenylene bis-diphenyltriazine (PBDT), and combinations thereof; and / or at least one organic particulate UV filter, preferably selected from the group consisting of 2,2'- methylene bis[6-(2H-benzotriazol-2-yl)-4-(1 ,1 ,3,3-tetramethylbutyl)phenol] (INCI methylene bis- benzotriazolyl tetramethylbutylphenol), 2,4,6-tris(biphenyl-4-yl)-1 ,3,5-triazine (INCI trisbiphenyl triazine, TBPT), 1 ,1 ’-(1 ,4-piperazinediyl)bis[1 -[2-[4-(diethylamino)-2-hydroxybenzoyl]phenyl]- methanone (INCI bis-(diethylaminohydroxybenzoyl benzoyl) piperazine), 5,6,5’,6’-tetraphenyl-3-3’- (1 ,4-phenylene)bis(1 ,2,4-triazine) (INCI phenylene bis-diphenyltriazine; PBDT), micronized 1 ,4- di(benzoxazole-2'-yl)benzene and combinations thereof; and / or at least one inorganic UV filter, preferably selected from the group consisting of titanium dioxide, zinc oxide, iron oxide, cerium oxide and mixtures thereof.11 . The sunscreen or daily care composition with photoprotection according to any one of the preceding claims, comprising at least one UV filter selected from diethylamino hydroxybenzoyl hexyl benzoate(DHHB), methoxypropylamino cyclohexenylidene ethoxyethylcyanoacetate (MCE), butyl methoxydibenzoylmethane (BMDBM), ethylhexyl triazone (EHT), methylene bis-benzotriazolyl tetramethylbutylphenol (MBBT), tris-biphenyl triazine (TBPT), and any combination of two or more thereof.

12. The sunscreen or daily care composition with photoprotection according to any one of the preceding claims, comprising, relative to the total weight of the composition,(i) at least one ester of lactic acid in an amount of 1 .5 to 20 wt.-%;(ii) phenylbenzimidazole sulfonic acid (PBSA) and / or a salt thereof in an amount of 0.5 to 8 wt- %;(iii) BEMT in an amount of from 0.5 to 10 wt.-%;(iv) DHHB, in an amount of from 0.5 to 8.0 wt.-%;(v) EHT, in an amount of from 0.5 to 5.0 wt.-%; and, optionally,(vi) at least one organic particulate UV filter selected from the group consisting of 2,2'-methylene bis[6-(2H-benzotriazol-2-yl)-4-(1 ,1 ,3,3-tetramethylbutyl)phenol] (INCI methylene bis- benzotriazolyl tetramethylbutylphenol), 2,4,6-tris(biphenyl-4-yl)-1 ,3,5-triazine (INCI trisbiphenyl triazine, TBPT), and 5,6,5’,6’-tetraphenyl-3-3’-(1 ,4-phenylene)bis(1 ,2,4-triazine) (INCI phenylene bis-diphenyltriazine; PBDT) in an amount of from 0.5 to 10.0 wt.-%, wherein the total amount of UV filters in the composition including PBSA and BEMT is 8 to 40 wt.-%; and wherein the weight ratio of (i) to (ii) is 1 :2 to 5:1 .

13. The sunscreen or daily care composition with photoprotection according to any one of the preceding claims, comprising BEMT in an amount of wt.-%1 to 5 wt.-% and preferably 2 to 4 wt.-%, based on the total weight of the composition.

14. The sunscreen or daily care composition with photoprotection according to any one of the preceding claims, wherein(1) the composition is free of at least one or more of parabens, and organic UV filter compounds selected from the group of homomenthyl salicylate, ethylhexyl methoxycinnamate, octocrylene, and ethylhexyl salicylate; and / or(2) the composition further comprises at least one additive, preferably selected from the group consisting of emulsifiers, emollients, viscosity regulators, buffering and pH adjustment agents, stabilizers, sensory enhancers, film formers, UV scattering compounds, UV protection booster compounds, adjuvants, preservatives, perfumes, and combinations thereof.

15. Use of phenylbenzimidazole sulfonic acid and / orsalt thereof for improving the stability of a sunscreen or daily care composition with photoprotection comprising at least one ester of lactic acid.

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