Sun Care Products

Abstract

The composition includes a dermatologically acceptable carrier, a UV radiation absorber, and a film-forming polymer, wherein the film-forming polymer is —Si(R 1 ) functionalized maltodextrins comprising a maltodextrin-based polymer functionalized with three groups, wherein each R 1 independently, C 1~10 The maltodextrin-based polymer has a dextrose equivalent (DE) of 2 to 20, and the functionalized maltodextrin has a -Si(R 1 ) a degree of substitution (DS) of 3 groups, wherein the functionalized maltodextrin does not contain vinyl carbons, and a sun care formulation is provided.

Description

[Technical Field]

[0001] The present invention relates to a suncare formulation. In particular, the present invention relates to a suncare formulation comprising a dermatologically acceptable carrier, a UV radiation absorber, and a film-forming polymer, the film-forming polymer having a —Si(R 1 ) functionalized maltodextrins comprising a maltodextrin-based polymer functionalized with three groups, wherein each R 1 independently, C 1~10 The maltodextrin-based polymer has a dextrose equivalent (DE) of 2 to 20, and the functionalized maltodextrin has a -Si(R 1 ) has a degree of substitution (DS) of 3 groups, and the functionalized maltodextrin does not contain any vinyl carbons. [Background technology]

[0002] The harmful effects of sunlight on human skin are well documented. Six percent of the solar energy reaching the Earth's surface is ultraviolet (UV) radiation, with wavelengths between 290 and 400 nm. This radiation is divided into two components: (i) low-energy UVA rays, with wavelengths between 320 and 400 nm, and (ii) high-energy UVB rays, with wavelengths between 290 and 320 nm. Although the UV portion of solar energy is relatively small, it induces nearly 99% of all adverse effects of sun exposure. For example, high-energy UVB rays are responsible for sunburn, signs of skin aging, and skin cancer. For example, low-energy UVA rays are responsible for direct sunburn and the induction of erythema (abnormal redness) of the skin, contributing to signs of skin aging.

[0003] By avoiding direct exposure to sunlight, individuals can avoid the serious effects caused by exposure to UV radiation. However, for some people, the nature of their work makes it difficult to avoid such exposure. Furthermore, some people voluntarily expose their skin to the sun, e.g., to sunburn. Therefore, protection against the harmful effects of the sun is important.

[0004] Protection from the harmful effects of UV radiation exposure is available in the form of topically applied formulations containing at least one physical UV blocker, at least one chemical UV absorber, or a combination thereof. Physical blockers include active ingredients such as titanium dioxide, zinc oxide, and red petrolatum. Chemical absorbers include active ingredients such as para-aminobenzoic acid (more commonly known as PABA), which are generally transparent upon application and activate by absorbing UV radiation, providing selective protection against certain UV wavebands depending on the absorption spectrum of the active ingredient in the formulation.

[0005] The effectiveness of a given sunscreen formulation is rated by how well it protects the skin in terms of its Sun Protection Factor (SPF), which is defined as the ratio of the amount of energy required to produce minimal erythema on sunscreen-protected skin to the amount of energy required to produce the same level of erythema on unprotected skin.

[0006] The need for compositions to impart water resistance and aid in retention of active ingredients in sun care compositions is well known, as without them, sun care actives may wash off, wear off, re-emulsify, or otherwise lose their effectiveness.

[0007] A technique for imparting water resistance and aiding in the retention of active ingredients in personal care compositions is disclosed in U.S. Patent No. 9,486,399 to Zeng et al. Zeng et al. discloses a personal care composition comprising: (a) a polymer containing, as polymerized units, 20 parts by weight of butyl acrylate, 40 parts by weight of ethylhexyl acrylate, 38.5 parts by weight of methyl methacrylate, 1.5 parts by weight of methacrylic acid, and 0.075 parts by weight of allyl methacrylate, based on the weight of the polymer; and (b) at least one sun care active. The polymer is formed in a single step.

[0008] Nevertheless, there remains a need for new film-forming ingredients that facilitate the need to impart water resistance and aid in active ingredient retention in sun care compositions, while simultaneously having increased biocarbon content compared to conventional film-forming ingredients. Summary of the Invention

[0009] The present invention provides a suncare formulation, the suncare formulation comprising a dermatologically acceptable carrier, a UV radiation absorber, and a film-forming polymer, the film-forming polymer having a —Si(R 1 ) functionalized maltodextrins comprising a maltodextrin-based polymer functionalized with three groups, wherein each R 1 independently, C 1~10 The maltodextrin-based polymer has a dextrose equivalent (DE) of 2 to 20, and the functionalized maltodextrin has a -Si(R 1 ) has a degree of substitution (DS) of 3 groups, and the functionalized maltodextrin does not contain any vinyl carbons.

[0010] The present invention also provides a method for protecting skin from sun exposure, comprising providing a suncare formulation of the present invention and applying the suncare formulation to the skin. DETAILED DESCRIPTION OF THE INVENTION

[0011] The present inventors have surprisingly found that -Si(R 1 We have discovered film-forming polymers that are functionalized maltodextrins, including maltodextrin-based polymers functionalized with three R groups, where each R 1 independently, C 1~10 The maltodextrin-based polymer has a dextrose equivalent (DE) of 2 to 20, and the functionalized maltodextrin has a -Si(R 1) has a degree of substitution (DS) of 3 groups, the functionalized maltodextrin contains no vinyl carbons, the film-forming polymer imparts water resistance and aids in retention of active ingredients in sun care compositions, and the film-forming polymer has an increased bio-carbon content compared to conventional film-forming ingredients.

[0012] Unless otherwise indicated, ratios, percentages, parts, etc. are by weight.

[0013] As used herein and in the appended claims, the term "dextrose equivalent, DE" refers to the degree of starch hydrolysis, specifically, the degree of starch hydrolysis, as measured by Standard Analytical Method E-26, Corn Refiners Association, 6 th "DE" refers to the reducing power of a starch hydrolysate material compared to the reducing power of an equal weight of dextrose, expressed as a percentage on a dry basis, as determined by the Lane and Eynon method described in the Lane and Eynon Methods, Vol. 1, No. 1, 1977, E-26, pp. 1-3. For example, a maltodextrin with a DE of 10 has 10% of the reducing power of a dextrose with a DE of 100.

[0014] As used herein and in the appended claims, the term "vinyl carbon" refers to a carbon that is involved in a double bond to another carbon.

[0015] The term "vinyl carbon-free" as used herein and in the appended claims with respect to functionalized maltodextrin means that the functionalized maltodextrin contains less than the detectable limit of vinyl carbon.

[0016] As used herein and in the appended claims, the term "dermatologically acceptable" refers to ingredients typically used in personal care compositions and is intended to emphasize that materials that are toxic when present in amounts typically found in personal care compositions are not contemplated as part of the present invention.

[0017] The term "aesthetic characteristics" as used herein and in the appended claims with respect to sun care formulations refers to visual and tactile sensory properties (e.g., smoothness, adhesion, lubricity, texture, color, clarity, turbidity, uniformity).

[0018] Preferably, the suncare formulations of the present invention are provided in a product form selected from the group consisting of creams, non-aqueous solutions, oils, ointments, pastes, gels, lotions, milks, foams, sticks, and suspensions. More preferably, the suncare formulations of the present invention are provided as non-aqueous solutions. Most preferably, the suncare formulations of the present invention are formulated for application to the skin using a mechanical device (e.g., manual pump spray container, squeeze bottle) or a pressurized aerosol container (e.g., bag-on-nozzle container, pressurized can) to form a spray.

[0019] Preferably, the suncare formulations of the present invention are provided in a product form selected from the group consisting of creams, non-aqueous solutions, emulsions, oils, ointments, pastes, gels, lotions, milks, foams, sticks, and suspensions. More preferably, the suncare formulations of the present invention are provided as emulsions.

[0020] Preferably, the suncare formulation of the present invention comprises a dermatologically acceptable carrier (preferably 10 to 98% by weight (more preferably 30 to 92% by weight, even more preferably 35 to 85% by weight, most preferably 40 to 80% by weight) of a dermatologically acceptable carrier based on the weight of the suncare formulation), a UV radiation absorber (preferably 0.1 to 70% by weight (more preferably 5 to 65% by weight, even more preferably 7.5 to 60% by weight, most preferably 10 to 55% by weight) of a UV radiation absorber based on the weight of the suncare formulation), and a film-forming polymer (preferably 0.1 to 70% by weight (more preferably 1 to 15% by weight, even more preferably 1.5 to 10% by weight, most preferably 2 to 6% by weight) of a film-forming polymer based on the weight of the suncare formulation), wherein the film-forming polymer is a -Si(R 1 ) functionalized maltodextrins comprising a maltodextrin-based polymer functionalized with three groups, wherein each R1 independently, C 1~10 (preferably, methyl, ethyl, propyl, butyl, and pentyl; more preferably, methyl, ethyl, propyl, and butyl; even more preferably, methyl, ethyl, and propyl; even more preferably, methyl and ethyl; and most preferably, methyl), the maltodextrin base polymer has a dextrose equivalent (DE) of 2 to 20 (preferably, 4 to 20, more preferably, 6 to 19.75, even more preferably, 14 to 19.5, and most preferably, 17 to 19), and the functionalized maltodextrin has a -Si(R) of 1.7 to 3 (preferably, 1.8 to 3, more preferably, 2.0 to 3, even more preferably, 2.4 to 2.9, even more preferably, 2.5 to 2.9, and most preferably, 2.6 to 2.9). 1 ) groups, and the functionalized maltodextrin does not contain any vinyl carbons. More preferably, the suncare formulation of the present invention comprises a dermatologically acceptable carrier (preferably 10 to 98 wt. % (more preferably 30 to 92 wt. %, even more preferably 35 to 85 wt. %, and most preferably 40 to 80 wt. % of the dermatologically acceptable carrier, based on the weight of the suncare formulation), a UV radiation absorber (preferably 0.1 to 70 wt. % (more preferably 5 to 65 wt. %, even more preferably 7.5 to 60 wt. %, and most preferably 10 to 55 wt. % of the UV radiation absorber, based on the weight of the suncare formulation), and a film-forming polymer (preferably 0.1 to 70 wt. % (more preferably 1 to 15 wt. %, even more preferably 1.5 to 10 wt. %, and most preferably 2 to 6 wt. % of the film-forming polymer, based on the weight of the suncare formulation), wherein the film-forming polymer is a -Si(R 1 functionalized maltodextrins comprising maltodextrin-based polymers functionalized with —Si(R) groups; 1 ) groups are attached to the maltodextrin-based polymer via a CO-Si bond, where each R 1 independently, C 1~10(preferably, methyl, ethyl, propyl, butyl, and pentyl; more preferably, methyl, ethyl, propyl, and butyl; even more preferably, methyl, ethyl, and propyl; even more preferably, methyl and ethyl; and most preferably, methyl), the maltodextrin base polymer has a dextrose equivalent (DE) of 2 to 20 (preferably, 4 to 20, more preferably, 6 to 19.75, even more preferably, 14 to 19.5, and most preferably, 17 to 19), and the functionalized maltodextrin has a -Si(R) of 1.7 to 3 (preferably, 1.8 to 3, more preferably, 2.0 to 3, even more preferably, 2.4 to 2.9, even more preferably, 2.5 to 2.9, and most preferably, 2.6 to 2.9). 1 ) has a degree of substitution (DS) of 3 groups, and the functionalized maltodextrin does not contain any vinyl carbons.

[0021] Preferably, the suncare formulation of the present invention comprises 10 to 98% by weight (preferably 30 to 92% by weight, more preferably 35 to 85% by weight, most preferably 40 to 80% by weight) of a dermatologically acceptable carrier, based on the weight of the suncare formulation. More preferably, the suncare formulation of the present invention comprises 10 to 98% by weight (preferably 30 to 92% by weight, more preferably 35 to 85% by weight, most preferably 40 to 80% by weight) of a dermatologically acceptable carrier, and the dermatologically acceptable carrier is selected from the group consisting of water, glycols (e.g., ethylene glycol, propylene glycol, butylene glycol, pentylene glycol, hexylene glycol, dipropylene glycol, ethoxydiglycol), C 1-10Straight or branched chain alcohols (e.g., methyl alcohol, ethyl alcohol, propyl alcohol, isopropyl alcohol, butyl alcohol, 2-butoxyethanol), ketones (e.g., acetone), acetates (e.g., methyl acetate), butyl cellosolve, dimethicone, polydimethylsiloxane, alkanes (e.g., isododecane, isohexane), alkanoates (e.g., methyl undecanoate), dermatologically acceptable hydrophobic ester oils (e.g., caprylic / capric triglyceride), dicaprylyl carbonate, alkyl benzoates (e.g., C 12~15 The sunscreen composition of the present invention preferably comprises 10 to 98% by weight (preferably 30 to 92% by weight, more preferably 35 to 85% by weight, most preferably 40 to 80% by weight) of a dermatologically acceptable carrier, the dermatologically acceptable carrier being selected so as to be able to evaporate upon application of the sunscreen composition to skin (preferably human skin). Even more preferably, the ... 1~4 The sunscreen formulation of the present invention comprises a straight-chain or branched-chain alcohol (e.g., methyl alcohol, ethyl alcohol, propyl alcohol, isopropyl alcohol, butyl alcohol) (preferably, the alcohol is denatured alcohol). Most preferably, the sunscreen formulation of the present invention comprises 10 to 98% by weight (preferably, 30 to 92% by weight, more preferably, 35 to 85% by weight, most preferably, 40 to 80% by weight) of a dermatologically acceptable carrier, based on the weight of the sunscreen formulation, and the dermatologically acceptable carrier comprises specifically denatured ethyl alcohol (e.g., INCI: SD Alcohol 40-B, INCI: Denatured Alcohol).

[0022] Preferably, the suncare formulation of the present invention contains 0.1 to 70% by weight (preferably 5 to 65% by weight, more preferably 7.5 to 60% by weight, most preferably 10 to 55% by weight) of UV ray absorber based on the weight of the suncare formulation. More preferably, the suncare formulation of the present invention contains 0.1 to 70% by weight (preferably 5 to 65% by weight, more preferably 7.5 to 60% by weight, most preferably 10 to 55% by weight) of UV ray absorber, and the UV ray absorber is selected from the group consisting of physical blockers (e.g., red petrolatum, titanium dioxide, zinc oxide), chemical absorbers (e.g., 1-(4-methoxyphenol)-3-(4-tert-butylphenyl)propane-1,3-dione (INCI: avobenzone), 2-hydroxy-4-methoxybenzyl benzoate (INCI: benzyl benzoate), and the like. Oxybenzone (INCI: Oxybenzone), Dioxybenzone, Sulisobenzone, Menthyl Anthranilate, Para-Aminobenzoic Acid, Amyl Para-Dimethylaminobenzoate, Octyl Para-Dimethylaminobenzoate, Ethyl 4-Bis(hydroxypropyl) Para-Aminobenzoate, Polyethylene Glycol (PEG-25) Para-Aminobenzoate, Ethyl 4-Bis(hydroxypropyl)aminobenzoate, Diethanolamine Para-Methoxycinnamate, 2-Ethoxyethyl Chil para-methoxycinnamate, ethylhexyl para-methoxycinnamate, octyl para-methoxycinnamate, isoamyl para-methoxycinnamate, 2-ethylhexyl-2-cyano-3,3-diphenyl-acrylate, 2-ethylhexyl-2-cyano-3,3-diphenyl-2-propenoate (INCI: Octocrylene), 2-ethylhexyl 2-hydroxybenzoate (INCI: Octisalate), homomenthyl salicylate, glycerylaminobenzoate The benzoic acid, triethanolamine salicylate, diguaroyl trioleate, lawsone with dihydroxyacetone, 2-phenylbenzimidazole-5-sulfonic acid, 4-methylbenzylidene camphor, avobenzone, triazines, benzotriazoles, vinyl group-containing amides, cinnamic acid amides, sulfonated benzimidazoles, 3,3,5-trimethylcyclohexyl 2-hydroxybenzoate (INCI: Homosalate), and mixtures thereof.Even more preferably, the sun care formulations of the present invention comprise 0.1 to 70% by weight (preferably 5 to 65% by weight, more preferably 7.5 to 60% by weight, most preferably 10 to 55% by weight) of UV radiation absorber, which UV radiation absorber comprises a mixture of UV radiation absorbers. Even more preferably, the sun care formulations of the present invention comprise 0.1 to 70% by weight (preferably 5 to 65% by weight, more preferably 7.5 to 60% by weight, most preferably 10 to 55% by weight) of a UV radiation absorber, which is a mixture of UV radiation absorbers comprising at least one of 1-(4-methoxyphenol)-3-(4-tert-butylphenyl)propane-1,3-dione (INCI: avobenzone), 2-ethylhexyl 2-hydroxybenzoate (INCI: octisalate), 2-ethylhexyl-2-cyano-3,3-diphenyl-2-propenoate (INCI: octocrylene), 2-hydroxy-4-methoxybenzophenone (INCI: oxybenzone) and 3,3,5-trimethylcyclohexyl 2-hydroxybenzoate (INCI: homosalate). Most preferably, the suncare formulations of the present invention comprise 0.1 to 70% by weight (preferably 5 to 65% by weight, more preferably 7.5 to 60% by weight, most preferably 10 to 55% by weight) of a UV absorber, which is a mixture of UV absorbers comprising 1-(4-methoxyphenol)-3-(4-tert-butylphenyl)propane-1,3-dione (INCI: avobenzone), 2-ethylhexyl 2-hydroxybenzoate (INCI: octisalate), 2-ethylhexyl-2-cyano-3,3-diphenyl-2-propenoate (INCI: octocrylene), and 3,3,5-trimethylcyclohexyl-2-hydroxybenzoate (INCI: homosalate).

[0023] Preferably, the suncare formulation of the present invention comprises 0.1 to 70% by weight (preferably 1 to 15% by weight, more preferably 1.5 to 10% by weight, most preferably 2 to 6% by weight) of a film-forming polymer, based on the weight of the suncare formulation, the film-forming polymer being a -Si(R 1 ) functionalized maltodextrins comprising a maltodextrin-based polymer functionalized with three groups, wherein each R1 independently, C 1~10 (preferably, methyl, ethyl, propyl, butyl, and pentyl; more preferably, methyl, ethyl, propyl, and butyl; even more preferably, methyl, ethyl, and propyl; even more preferably, methyl and ethyl; and most preferably, methyl), the maltodextrin base polymer has a dextrose equivalent (DE) of 2 to 20 (preferably, 4 to 20, more preferably, 6 to 19.75, even more preferably, 14 to 19.5, and most preferably, 17 to 19), and the functionalized maltodextrin has a -Si(R) of 1.7 to 3 (preferably, 1.8 to 3, more preferably, 2.0 to 3, even more preferably, 2.4 to 2.9, even more preferably, 2.5 to 2.9, and most preferably, 2.6 to 2.9). 1 ) groups, and the functionalized maltodextrin contains no vinyl carbons. More preferably, the sun care formulations of the present invention comprise 0.1 to 70 wt. % (preferably 1 to 15 wt. %, more preferably 1.5 to 10 wt. %, and most preferably 2 to 6 wt. %) of a film-forming polymer, based on the weight of the sun care formulation, and the film-forming polymer comprises a —Si(R 1 functionalized maltodextrins comprising maltodextrin-based polymers functionalized with —Si(R) groups; 1 ) groups are attached to the maltodextrin-based polymer via a CO-Si bond, where each R 1 independently, C 1~10(preferably, methyl, ethyl, propyl, butyl, and pentyl; more preferably, methyl, ethyl, propyl, and butyl; even more preferably, methyl, ethyl, and propyl; even more preferably, methyl and ethyl; and most preferably, methyl), the maltodextrin base polymer has a dextrose equivalent (DE) of 2 to 20 (preferably, 4 to 20, more preferably, 6 to 19.75, even more preferably, 14 to 19.5, and most preferably, 17 to 19), and the functionalized maltodextrin has a -Si(R) of 1.7 to 3 (preferably, 1.8 to 3, more preferably, 2.0 to 3, even more preferably, 2.4 to 2.9, even more preferably, 2.5 to 2.9, and most preferably, 2.6 to 2.9). 1 ) has a degree of substitution (DS) of 3 groups, and the functionalized maltodextrin does not contain any vinyl carbons.

[0024] Preferably, the maltodextrin-based polymer has a dextrose equivalent (DE) of 2 to 20 (preferably 4 to 20, more preferably 6 to 19.75, even more preferably 14 to 19.5, and most preferably 17 to 19). More preferably, the maltodextrin-based polymer has a dextrose equivalent (DE) of 2 to 20 (preferably 4 to 20, more preferably 6 to 19.75, even more preferably 14 to 19.5, and most preferably 17 to 19), and the maltodextrin-based polymer is a linear or branched maltodextrin polymer containing a plurality of glucose structural units. Most preferably, the maltodextrin-based polymer has a dextrose equivalent (DE) of 2 to 20 (preferably 4 to 20, more preferably 6 to 19.75, even more preferably 14 to 19.5, and most preferably 17 to 19). The maltodextrin-based polymer is a linear or branched maltodextrin polymer containing a plurality of glucose structural units, in which 90 to 100 mol % (preferably 92 to 100 mol %, more preferably 93 to 100 mol %, and most preferably 94.5 to 100 mol %) of the glucose structural units are connected by α-1,4 bonds, and 0 to 10 mol % (preferably 0 to 8 mol %, more preferably 0 to 7 mol %, and most preferably 0 to 5.5 mol %) of the glucose structural units are connected by α-1,6 bonds.

[0025] Preferably, the maltodextrin-based polymer contains less than 0.01% by weight of alternan based on the weight of the maltodextrin-based polymer. More preferably, the maltodextrin-based polymer contains less than 0.001% by weight of alternan based on the weight of the maltodextrin-based polymer. Most preferably, the maltodextrin-based polymer contains less than the detectable limit of alternan.

[0026] Preferably, less than 0.1 mol % (preferably less than 0.01 mol %, more preferably less than 0.001 mol %, most preferably below the detection limit) of the glucose structural units in the maltodextrin-based polymer are connected by β-1,4 linkages.

[0027] Preferably, less than 0.1 mol % (preferably less than 0.01 mol %, more preferably less than 0.001 mol %, most preferably below the detection limit) of the glucose structural units in the maltodextrin-based polymer are connected by β-1,3 bonds.

[0028] Preferably, the suncare formulation of the present invention further comprises 0 to 90% by weight (preferably 0.01 to 65% by weight, more preferably 1 to 50% by weight, and most preferably 5 to 25% by weight) of a color component, based on the weight of the suncare formulation. More preferably, the suncare formulation of the present invention further comprises 0 to 90% by weight (preferably 0.01 to 65% by weight, more preferably 1 to 50% by weight, and most preferably 5 to 25% by weight) of a color component, based on the weight of the suncare formulation, the color component being selected from the group consisting of inorganic pigments, organic pigments, aqueous pigment dispersions, and mixtures thereof.Even more preferably, the sun care formulation of the present invention further optionally comprises 0 to 90% by weight (preferably 0.01 to 65% by weight, more preferably 1 to 50% by weight, most preferably 5 to 25% by weight) of a color component, based on the weight of the sun care formulation, and the color component may be selected from the group consisting of Ext. D&C Yellow No. 2, Ext. D&C Violet No. 2, FD&C Red No. 4, FD&C Red No. 40, FD&C Yellow No. 5, FD&C Yellow No. 6, FD&C Green No. 3, FD&C Blue No. 1, D&C Yellow No. 7, D&C Yellow No. 8, D&C Yellow No. 10, D&C Yellow No. 11, D&C Violet No. 2, D&C Red No. 6, D&C Red No. 7, D&C Red No. 17, D&C Red No. 21, D&C Red No. 22, D&C Red No. 27, D&C Red No. 28, D&C Red No. 29, D&C Red No. 30, D&C Red No. 31, D&C Red No. 32, D&C Red No. 33, D&C Red No. 34, D&C Red No. 35, D&C Red No. 36, D&C Red No. 37, D&C Red No. 38, D&C Red No. 39, D&C Red No. 40, D&C Yellow No. 41, D&C Red No. 42, D&C Red No. 43, D&C Red No. 44, D&C Red No. 45, D&C Red No. 46, D&C Red No. 47, D&C Red No. 48, D&C Red No. 49, D&C Red No No. 28, D&C Red No. 30, D&C Red No. 31, D&C Red No. 34, D&C Red No. 33, D&C Red No. 36, D&C Green No. 5, D&C Green No. 6, D&C Green No. 8, D&C Blue No. 4, D&C Orange No. 4, D&C Orange No. 5, D&C Orange No. 10, D&C Orange No. 11, D&C Brown No. 1, aluminum powder, annatto, bismuth citrate, bismuth oxychloride, bronze powder, caramel, carmine, beta-carotene, chromium hydroxide, chromium oxide, copper chlorophyllin, copper powder, dihydroxyacetone, ferric ammonium ferrocyanide, guanine, iron oxide, manganese violet, mica, silver, titanium dioxide, ultramarine, zinc oxide, and mixtures thereof. Even more preferably, the suncare formulations of the present invention further optionally comprise 0 to 90% by weight (preferably 0.01 to 65% by weight, more preferably 1 to 50% by weight, most preferably 5 to 25% by weight) of a color component, based on the weight of the suncare formulation, the color component comprising at least one iron oxide.Most preferably, the suncare formulation of the present invention further comprises 0 to 90 wt. % (preferably 0.01 to 65 wt. %, more preferably 1 to 50 wt. %, most preferably 5 to 25 wt. %) of a color component, based on the weight of the suncare formulation, wherein the color component comprises a mixture of iron oxides.

[0029] Preferably, the suncare formulations of the present invention optionally further comprise additives. More preferably, the suncare formulations of the present invention further comprise additives selected from the group consisting of waterproofing agents, emollients, preservatives, antioxidants, fragrances, moisturizers, rheology modifiers, cosmetic modifiers, vitamins, skin protectants, oils (e.g., hydrophobic ester oils such as caprylic / capric triglyceride), emulsifiers, surfactants, pearlescent agents, consistency factors, thickeners, superfatting agents, stabilizers, polymers, silicone compounds, fats, waxes, lecithin, phospholipids, fillers, light management powders, antiperspirant actives (e.g., aluminum salts, zirconium salts), and mixtures thereof.

[0030] Preferably, the suncare formulations of the present invention have a pH of 4 to 9. More preferably, the suncare formulations of the present invention have a pH of 4.5 to 8.5. Even more preferably, the suncare formulations of the present invention have a pH of 5.0 to 8.0. Most preferably, the suncare formulations of the present invention have a pH of 5.5 to 7.5. [Example]

[0031] Some embodiments of the present invention will now be described in detail in the following examples.

[0032] Synthesis S1: Silylated Maltodextrin Ammonium chloride (412.4 mg, 0.05 equivalents) and Glucidex® 1 maltodextrin (DE 1, manufactured by Roquette) (25.0 g, 0.154 mol, 1.0 equivalents) were mixed in a 2 CV Helicone mixer (CIT) at a stirring rate of 5 Hz. The resulting mixture was transferred to a reactor. Hexamethyldisilazane (80.87 g, 3.25 equivalents) was then added dropwise to the reactor contents. Dimethyl sulfoxide (10.8 g) was then added to the reactor contents. The reactor was then sealed and continuously flushed with nitrogen. The reactor contents were stirred at 20 Hz. Heat was applied to the reactor using a heating mantle set to a temperature of 40°C, and the stirring was increased to 50 Hz. After 30 minutes, the heating mantle was set to 50°C. The temperature setting of the heating mantle was then increased to 80°C in 10°C increments over the course of 1 hour. After the temperature of the reactor contents reached 71°C, the reactor contents were stirred for 1 hour. The heating mantle was then removed, and the stirring was reduced to 25 Hz. Once the reactor contents had cooled to <50°C, the stirring was stopped, and 400 mL of ethyl acetate was added to the reactor contents. Stirring was then resumed at 25 Hz for 5 minutes. The stirring was then stopped, and the organic layer was transferred to a collection jar. Ethyl acetate (100 mL) was then added to the reactor contents, and stirring was resumed at 25 Hz for 5 minutes. The stirring was then stopped, and the organic layer was transferred to the contents of the collection jar. The contents of the collection jar were transferred to a separatory funnel and washed twice with distilled water (2 x 250 mL). The organic layer was collected in an Erlenmeyer flask and dried over sodium sulfate. The organic layer was then concentrated under vacuum to yield a fine white powder (approximately 46.3 g). The degree of substitution (DS) of -Si(CH3)3 on the maltodextrin-based polymer was determined as follows: 1 Determined to be 1.67 by 1 H NMR.

[0033] Synthesis S2: Silylated Maltodextrin Ammonium chloride (454.4 mg, 0.05 equivalents) and Glucidex® 1 maltodextrin (DE 1, manufactured by Roquette) (27.0 g, 0.166 mol, 1.0 equivalents) were mixed in a 2 CV Helicone mixer (CIT) at a stirring rate of 5 Hz. The resulting mixture was transferred to a reactor. Hexamethyldisilazane (87.34 g, 3.25 equivalents) was then added dropwise to the reactor contents. Dimethyl sulfoxide (11.66 g) was then added to the reactor contents. The reactor was then sealed and continuously flushed with nitrogen. The reactor contents were stirred at 20 Hz. Heat was applied to the reactor using a heating mantle set to a temperature of 92°C, and the stirring was increased to 50 Hz. After the temperature of the reactor contents reached 83°C, the reactor contents were stirred for 1.5 hours. The heating mantle was then removed, and the stirring was reduced to 25 Hz. Once the reactor contents had cooled to <50°C, stirring was stopped and 400 mL of ethyl acetate was added to the reactor contents. Stirring was then resumed at 25 Hz for 5 minutes. Stirring was then stopped and the organic layer was transferred to a collection jar. Ethyl acetate (100 mL) was then added to the reactor contents and stirring was resumed at 25 Hz for 5 minutes. Stirring was then stopped and the organic layer was transferred to the contents of the collection jar. The contents of the collection jar were transferred to a separatory funnel and washed twice with distilled water (2 x 250 mL). The organic layer was collected in an Erlenmeyer flask and dried over sodium sulfate. The organic layer was then concentrated under vacuum to yield a fine white powder (approximately 56.6 g). The degree of substitution (DS) of -Si(CH3)3 on the maltodextrin-based polymer was determined as follows: 1 Determined to be 2.1 by 1 H NMR.

[0034] Synthesis S3: Silylated Maltodextrin Ammonium chloride (445.4 mg, 0.05 eq.) and Glucidex® 1 maltodextrin (DE 1, manufactured by Roquette) (27.0 g, 0.167 mol, 1.0 eq.) were mixed in a 2 CV Helicone mixer (CIT) at a stirring rate of 5 Hz. The resulting mixture was transferred to a reactor. Hexamethyldisilazane (60.47 g, 2.25 eq.) was then added dropwise to the reactor contents. Dimethyl sulfoxide (11.7 g) was then added to the reactor contents. The reactor was then sealed and continuously flushed with nitrogen. The reactor contents were stirred at 20 Hz. Heat was applied to the reactor using a heating mantle set to a temperature of 55°C, and the stirring was increased to 50 Hz. After 5 minutes, the heating mantle was set to 102°C. The reactor contents were stirred for 2 hours. The heating mantle was then removed, and the stirring was reduced to 25 Hz. Once the reactor contents had cooled to <50°C, stirring was stopped and 400 mL of ethyl acetate was added to the reactor contents. Stirring was then resumed at 25 Hz for 5 minutes. Stirring was then stopped and the organic layer was transferred to a collection jar. Ethyl acetate (100 mL) was then added to the reactor contents and stirring was resumed at 25 Hz for 5 minutes. Stirring was then stopped and the organic layer was transferred to the contents of the collection jar. The contents of the collection jar were transferred to a separatory funnel and washed twice with distilled water (2 x 250 mL). The organic layer was collected in an Erlenmeyer flask and dried over sodium sulfate. The organic layer was then concentrated under vacuum to yield a fine white powder (approximately 407.3 g). The degree of substitution (DS) of -Si(CH3)3 on the maltodextrin-based polymer was determined as follows: 1 Determined to be 2.55 by 1 H NMR.

[0035] Synthesis S4: Silylated Maltodextrin To a 25 mL scintillation vial, ammonium chloride (33.0 mg, 0.05 equiv.) and Maltrin M250 maltodextrin (DE 23-27, Grain Processing Corporation) (2.0 g, 12.3 mM, 1.0 equiv.) were added. Hexamethyldisilazane (4.48 g, 2.25 equiv.) was then added dropwise to the vial contents. Dimethyl sulfoxide (1 g) was then added to the vial contents, and the vial was capped with a screw-cap septum surmounted by two vent needles. The vial was placed on an aluminum heating block set at 85°C for 1.5 hours. The vial contents were then cooled to <50°C and diluted with ethyl acetate (150 mL). The organic layer was transferred to a separatory funnel and washed three times (3 x 50 mL) with distilled water. The organic layer was collected in an Erlenmeyer flask and dried over sodium sulfate. The organic layer was then concentrated under vacuum to give a fine white powder (about 4.15 g). The degree of substitution (DS) of -Si(CH3)3 on the maltodextrin-based polymer was 1 Determined to be 2.2 by 1 H NMR.

[0036] Synthesis S5: Silylated cellulose Polysaccharide (BioSloc XV, 15.0 g, Tartas) was weighed into a 2 L three-neck flask equipped with a nitrogen inlet and temperature control. Solvent (N,N dimethylacetamide, 331 g, Sigma-Aldrich) was added, and the reaction mixture was placed under a nitrogen atmosphere with an outlet to avoid overpressurizing the reactor. Silane (hexamethyldisilazane, 30 g, The Dow Chemical Company) was added all at once to the reaction mixture. The mixture was slowly heated to a set temperature of 130 °C and stirred for 7.5 h. The solution was allowed to cool naturally, and then xylene (600 g, Sigma-Aldrich) was added to the reaction mixture along with additional hexamethyldisilazane (20 g), and the mixture was stirred at a set temperature of 125 °C for 4 h. The reactor contents were allowed to cool to room temperature overnight. The product solution was then transferred to a separatory funnel and subjected to non-solvent precipitation by dropwise addition into 2 L of vigorously stirred methanol. The product was isolated by filtration and dried overnight in a vacuum oven at 50° C. The product was then suspended in 500 mL of methanol, then filtered and dried overnight in a vacuum oven at 50° C. The product was analyzed by attenuated total reflectance infrared and the DS was determined to be 2.23.

[0037] Synthesis S6: Silylated cellulose Polysaccharide (E-60, 15.2 g, GP Cellulose) was weighed into a 2 L three-neck flask equipped with a nitrogen inlet and temperature control. Solvent (N,N dimethylacetamide, 324 g) was added, and the reaction mixture was placed under a nitrogen atmosphere with an outlet to avoid overpressurizing the reactor. Silane (hexamethyldisilazane, 50.2 g, The Dow Chemical Company) was added all at once to the reaction mixture along with saccharin catalyst (850 mg, Sigma-Aldrich). The mixture was slowly heated to a set temperature of 130 °C and stirred for 5 hours. After the solution was allowed to cool naturally, xylene (400 g) was added to the reaction mixture, and the mixture was stirred at 120 °C for 8 hours. The reactor contents were allowed to cool to room temperature overnight. The cooled product solution was then transferred to a separatory funnel and subjected to non-solvent precipitation by dropwise addition into 2 L of vigorously stirred methanol. The product was isolated by filtration and dried overnight in a vacuum oven at 50 °C. The product was then suspended in 500 mL of methanol, then re-filtered, dried in a vacuum oven at 50° C. overnight, and analyzed by attenuated total reflectance infrared, determining a DS of 2.6.

[0038] Synthesis S7: Silylated Maltodextrin Ammonium chloride (33.0 mg, 0.05 equiv.) and Maltrin M200 maltodextrin (DE range 16.5-19.9, Grain Processing Corporation) (2.0 g, 12.3 mM, 1.0 equiv.) were added to a 25 mL scintillation vial. Hexamethyldisilazane (3.58 g, 1.80 equiv.) was then added dropwise to the vial contents. Dimethyl sulfoxide (0.75 g) was then added to the vial contents, and the vial was capped with a screw-cap septum topped with two vent needles. The vial was placed on a heating block set at 80 °C for 1 hour. The vial contents were then cooled to <50 °C and diluted with ethyl acetate (150 mL). The organic layer was transferred to a separatory funnel and washed three times (3 × 50 mL) with distilled water. The organic layer was collected in an Erlenmeyer flask and dried over sodium sulfate. The organic layer was then concentrated under vacuum to give a fine white powder (approximately 3.6 g). The degree of substitution (DS) of -Si(CH3)3 on the maltodextrin-based polymer was: 1 Determined to be 2.76 by 1 H NMR.

[0039] Synthesis S8: Silylated Maltodextrin To a 25 mL scintillation vial was added ammonium chloride (33.0 mg, 0.05 equiv.) and Maltrin M040 (DE 4-7, Grain Processing Corporation) (2.0 g, 12.3 mM, 1.0 equiv.). Hexamethyldisilazane (4.48 g, 2.25 equiv.) was then added dropwise to the vial contents. Dimethyl sulfoxide (1 g) was then added to the vial contents, and the vial was capped with a screw-cap septum surmounted by two vent needles. The vial was placed on a heating block set at 85°C for 1.5 hours. The vial contents were then cooled to <50°C and diluted with ethyl acetate (150 mL). The organic layer was transferred to a separatory funnel and washed three times (3 x 50 mL) with distilled water. The organic layer was collected in an Erlenmeyer flask and dried over sodium sulfate. The organic layer was then concentrated under vacuum to give a fine white powder (about 4.15 g). The degree of substitution (DS) of -Si(CH3)3 on the maltodextrin-based polymer was 1Determined to be 2.5 by 1 H NMR.

[0040] Synthesis S9: Silylated Maltodextrin Ammonium chloride (445.4 mg, 0.05 eq.) and Glucidex® 1 maltodextrin (DE 1, manufactured by Roquette) (27.0 g, 0.166 mol, 1.0 eq.) were mixed in a 2 CV Helicone mixer (CIT) at a stirring rate of 5 Hz. The resulting mixture was transferred to a reactor. Hexamethyldisilazane (87.34 g, 3.25 eq.) was then added dropwise to the reactor contents. Dimethyl sulfoxide (11.66 g) was then added to the reactor contents. The reactor was then sealed and continuously flushed with nitrogen. The reactor contents were stirred at 20 Hz. Heat was applied to the reactor using a heating mantle set to a temperature of 50°C, and the stirring was increased to 50 Hz. After 20 minutes, the heating mantle was set to 100°C. The reactor contents were stirred for 2 hours. The heating mantle was then removed and the stirring was reduced to 25 Hz. Once the reactor contents had cooled to <50°C, the stirring was stopped and 400 mL of ethyl acetate was added to the reactor contents. Stirring was then resumed at 25 Hz for 5 minutes. The stirring was then stopped and the organic layer was transferred to a collection jar. Ethyl acetate (100 mL) was then added to the reactor contents and stirring was resumed at 25 Hz for 5 minutes. The stirring was then stopped and the organic layer was transferred to the contents of the collection jar. The contents of the collection jar were transferred to a separatory funnel and washed twice with distilled water (2 x 250 mL). The organic layer was collected in an Erlenmeyer flask and dried over sodium sulfate. The organic layer was then concentrated under vacuum to yield a fine white powder (approximately 53 g). The degree of substitution (DS) of -Si(CH3)3 on the maltodextrin-based polymer was determined as follows: 1 Determined to be 2.23 by 1 H NMR.

[0041] Synthesis S10: Silylated Maltodextrin To a 25 mL scintillation vial was added ammonium chloride (33.0 mg, 0.05 equiv.) and Glucidex® 1 maltodextrin (DE 1, from Roquette) (2.0 g, 12.3 mM, 1.0 equiv.). Hexamethyldisilazane (4.48 g, 2.25 equiv.) was then added dropwise to the vial contents. Dimethyl sulfoxide (1 g) was then added to the vial contents, and the vial was capped with a screw-cap septum surmounted by two vent needles. The vial was placed on a heating block set at 85°C for 2 hours. The vial contents were then cooled to <50°C and diluted with ethyl acetate (150 mL). The organic layer was transferred to a separatory funnel and washed three times with distilled water (3 × 50 mL). The organic layer was collected in an Erlenmeyer flask and dried over sodium sulfate. The organic layer was then concentrated under vacuum to give a fine white powder (approximately 3.96 g). The degree of substitution (DS) of -Si(CH3)3 on the maltodextrin-based polymer was: 1 Determined to be 2.51 by 1 H NMR.

[0042] Synthesis S11: Silylated Maltodextrin Ammonium chloride (445.4 mg, 0.05 eq.) and Glucidex® 1 maltodextrin (DE 1, manufactured by Roquette) (27.0 g, 0.166 mol, 1.0 eq.) were mixed in a 2 CV Helicone mixer (CIT) at a stirring rate of 5 Hz. The resulting mixture was transferred to a reactor. Hexamethyldisilazane (87.34 g, 3.25 eq.) was then added dropwise to the reactor contents. Dimethyl sulfoxide (11.66 g) was then added to the reactor contents. The reactor was then sealed and continuously flushed with nitrogen. The reactor contents were stirred at 20 Hz. Heat was applied to the reactor using a heating mantle set to a temperature of 50°C, and the stirring was increased to 50 Hz. After 20 minutes, the heating mantle was set to 100°C. The reactor contents were stirred for 2 hours. The heating mantle was then removed and the stirring was reduced to 25 Hz. Once the reactor contents had cooled to <50°C, the stirring was stopped and 400 mL of ethyl acetate was added to the reactor contents. Stirring was then resumed at 25 Hz for 5 minutes. The stirring was then stopped and the organic layer was transferred to a collection jar. Ethyl acetate (100 mL) was then added to the reactor contents and stirring was resumed at 25 Hz for 5 minutes. The stirring was then stopped and the organic layer was transferred to the contents of the collection jar. The contents of the collection jar were transferred to a separatory funnel and washed twice with distilled water (2 x 250 mL). The organic layer was collected in an Erlenmeyer flask and dried over sodium sulfate. The organic layer was then concentrated under vacuum to yield a fine white powder (approximately 56.3 g). The degree of substitution (DS) of -Si(CH3)3 on the maltodextrin-based polymer was determined as follows: 1 Determined to be 2.42 by 1 H NMR.

[0043] Synthesis S12: Silylated Maltodextrin To a 25 mL scintillation vial, ammonium chloride (24.7 mg, 0.05 equivalents) and dry Glucidex® 1 maltodextrin (DE 1, from Roquette) (1.5 g, 3.25 equivalents) were added. Hexamethyldisilazane (4.85 g, 3.25 equivalents) was then added dropwise to the vial contents. Dimethyl sulfoxide (0.8 g) was then added to the vial contents, and the vial was capped with a screw-cap septum surmounted by two vent needles. The vial was placed on a heating block set at 90°C for 4 hours. The vial contents were then cooled to <50°C and diluted with ethyl acetate (200 mL). The organic layer was transferred to a separatory funnel and washed three times (3 × 60 mL) with a 50 / 50 vol / vol mixture of brine and distilled water. The organic layer was collected in an Erlenmeyer flask and dried over sodium sulfate. The organic layer was then concentrated under vacuum to give an off-white crystalline solid, which was easily pulverized with a spatula. The product powder was dried in a 50°C oven for 5 hours under vacuum. The degree of substitution (DS) of -Si(CH3)3 on the maltodextrin-based polymer was 1 Determined to be 2.42 by 1 H NMR.

[0044] Synthesis S13: Silylated Maltodextrin To a 25 mL scintillation vial, ammonium chloride (24.7 mg, 0.05 equivalents) and dry Maltrin M150 maltodextrin (DE 13-17, Grain Processing Corporation) (1.5 g, 1.0 equivalents) were added. Hexamethyldisilazane (4.85 g, 3.25 equivalents) was then added dropwise to the vial contents. Dimethyl sulfoxide (0.8 g) was then added to the vial contents, and the vial was capped with a screw-cap septum surmounted by two vent needles. The vial was placed on a heating block set at 90°C for 2.5 hours. The vial contents were then cooled to <50°C and diluted with ethyl acetate (200 mL). The organic layer was transferred to a separatory funnel and washed three times (3 x 60 mL) with a 50 / 50 vol / vol mixture of brine and distilled water. The organic layer was collected in an Erlenmeyer flask and dried over sodium sulfate. The organic layer was then concentrated under vacuum to give an off-white crystalline solid, which was easily pulverized with a spatula. The product powder was dried in a 50°C oven for 5 hours under vacuum. The degree of substitution (DS) of -Si(CH3)3 on the maltodextrin-based polymer was 1 Determined to be 2.64 by 1 H NMR.

[0045] Synthesis S14: Silylated Maltodextrin Ammonium chloride (33.0 mg, 0.05 equiv.) and Maltrin M200 maltodextrin (DE 20-23, Grain Processing Corporation) (2.0 g, 1.0 equiv.) were added to a 25 mL scintillation vial. Hexamethyldisilazane (3.58 g, 1.80 equiv.) was then added dropwise to the vial contents. Dimethyl sulfoxide (0.75 g) was then added to the vial contents, and the vial was capped with a screw-cap septum surmounted by two vent needles. The vial was placed on a heating block set at 80 °C for 1 hour. The vial contents were then cooled to <50 °C and diluted with ethyl acetate (150 mL). The organic layer was transferred to a separatory funnel and washed three times (3 × 50 mL) with a 50 / 50 vol / vol mixture of brine and distilled water. The organic layer was collected in an Erlenmeyer flask and dried over sodium sulfate. The organic layer was then concentrated under vacuum to give a fine white powder. The product powder was vacuum dried in an oven at 50°C for 5 hours. The degree of substitution (DS) of -Si(CH3)3 on the maltodextrin-based polymer was 1 Determined to be 2.45 by 1 H NMR.

[0046] Solubility screening (2 wt%) The solubility of the products of synthesis S1-S6 and a commercial maltodextrin with a DE of 1 (Glucidex® 1 from Roquette) was evaluated in different carriers by individually combining the products of synthesis S1-S6 (0.1 g) and the commercial maltodextrin with various solvents (4.9 g) listed in Table 1 in separate vials. The resulting 2 wt % solutions were stirred with a magnetic stir bar at approximately 22°C for 1 hour. The carriers and solubility observations are provided in Table 1.

[0047] [Table 1]

[0048] Solubility screening (50% by weight) The solubility of the products of synthesis S2, S3, and S7 (2 g) was evaluated in isododecane (2 g) as shown in Table 2. The resulting 50 wt % solutions were stirred with a magnetic stir bar at about 22° C. for 1 hour. The carrier and solubility observations are provided in Table 2.

[0049] [Table 2]

[0050] Viscosity in isododecane The products of syntheses S5, S6, and S9 were dissolved in isododecane at different concentrations as shown in Table 3. The viscosities of the resulting solutions were then determined at approximately 22°C and 100 rpm using a Brookfield DV-111-ultra viscometer equipped with an SC4-28 spindle. The results are shown in Table 3.

[0051] [Table 3]

[0052] Comparative Examples CF1 to CF6 and Example F1: Water repellency The water repellency of a film is strongly influenced by surface energy. High water repellency is desirable for sun care applications. The water repellency of a formulation can be evaluated by measuring the water contact angle from a deposited film of the formulation. Specifically, films were coated onto glass slides (50 μm wet film thickness) from dispersions formed using the ingredients listed in Table 4 using a doctor blade film applicator with a gap set at 6 mils (0.1524 mm) from the as-received polymer solution. The films were air-dried for at least 72 hours in an environmentally controlled chamber (22°C and 50% RH). A drop of water was then deposited on the substrate, and the water contact angle (degrees) of the deposited film was then measured at 120 seconds using a drop shape analyzer (Kruss DSA100). The results of the water contact angle measurements are shown in Table 4. A higher contact angle indicates better water repellency. A contact angle greater than 90° is considered excellent.

[0053] [Table 4]

[0054] Comparative Examples CF7 to CF12 and Examples F2 to F4: Suncare Formulations A sun care formulation was prepared having the composition shown in Table 5. Avobenzone, caprylic / capric triglyceride, and ethylhexyl salicylate were combined in a flask and heated to 60°C until all of the avobenzone was melted. The heat source was removed, and the remaining ingredients, except for ethanol, were added to the contents of the flask. Once the contents of the flask had cooled to <30°C, ethanol was added with stirring for 30 minutes until the contents of the flask were homogeneous.

[0055] [Table 5]

[0056] In vitro SPF performance and water resistance The sun care formulations prepared according to Comparative Examples CF7, CF8, CF10-CF13 and Examples F2-F4 were evaluated for SPF performance. The SPF performance of each of the sun care formulations was then tested in triplicate using in vitro techniques according to the following protocol:

[0057] The substrates used for in vitro SPF measurements were roughened PMMA substrates (6 μm-Helioplate HD6 available from HelioScreen Co.). Each sun care formulation to be tested was applied to three separate roughened 5 cm x 5 cm PMMA substrates at a concentration of 1.5 mg / cm. 2 The sun care formulations were applied at 100°C using a specific finger spread method. Each deposited layer of sun care formulation was allowed to dry for at least 60 minutes under ambient laboratory conditions. The UV absorbance of each dried layer of sun care formulation was then measured at nine separate points from 290 nm to 400 nm using a Labsphere UV-2000S spectrometer. The initial in vitro SPF, SPF 10, was then calculated for each sun care formulation prepared according to Comparative Examples CF7, CF8, CF10-CF13, and Examples F2-F4. IThe values ​​were calculated based on the results of UV absorption measurements and are reported in Table 6 for the average of three samples of each sun care formulation prepared according to Comparative Examples CF7, CF8, CF10-CF13 and Examples F2-F4.

[0058] Following the initial SPF test, the treated PMMA plates were then immersed in a 5 L hard water bath (150 ppm, 2:1 CaCl2 / MgCl2) at 29°C and stirred at 600 rpm using a 1.5 inch oval smooth magnetic stir bar. The treated PMMA plates were suspended and submerged in water for 15 minutes. The treated PMMA plates were placed flat, treated side up, on a Kimwipe™ wipe and allowed to dry for 12 hours. After drying, each treated PMMA plate was tested again in triplicate to determine the post-immersion SPF value SPF A- The averages from triplicate samples for each sun care formulation are reported in Table 6.

[0059] The % SPF retention after water immersion exposure was then calculated using the following formula:

[0060]

number

[0061] [Table 6]

Claims

1. a dermatologically acceptable carrier; a UV absorber; A film-forming polymer, comprising: —Si(R １ ) ３ a film-forming polymer that is a functionalized maltodextrin, comprising a maltodextrin-based polymer functionalized with a group; wherein each R １ are independently １～１０ The maltodextrin base polymer has a dextrose equivalent (DE) of 2 to 20, and the functionalized maltodextrin has a —Si(R １ ) ３ 10. A sun care formulation having a degree of substitution (DS) of 1 to 10 carbon atoms, wherein the functionalized maltodextrin is free of vinyl carbons.

2. The dermatologically acceptable carrier may be water, glycol, C １～１０ 2. Suncare formulation according to claim 1, wherein the active ingredient is selected from the group consisting of linear or branched alcohols, ketones, acetates, butyl cellosolve, dimethicone, polydimethylsiloxane, alkanes, alkanoates, dermatologically acceptable hydrophobic ester oils, dicaprylyl carbonate, alkyl benzoates, hemisqualane, dioctyl ethers, keto acids, and mixtures thereof.

3. 3. The sun care formulation of claim 2, wherein the UV radiation absorber is selected from the group consisting of physical blockers, chemical absorbers, and mixtures thereof.

4. The UV absorber may be red petrolatum, titanium dioxide, zinc oxide, 1-(4-methoxyphenol)-3-(4-tert-butylphenyl)propane-1,3-dione, 2-hydroxy-4-methoxybenzophenone, dioxybenzone, sulisobenzone, menthyl anthranilate, para-aminobenzoic acid, amyl para-dimethylaminobenzoate, octyl para-dimethylaminobenzoate, ethyl 4-bis(hydroxypropyl) para-aminobenzoate, polyethylene glycol (PEG-25) para-aminobenzoate, ethyl 4-bis(hydroxypropyl)aminobenzoate, diethanolamine para-methyoxycinnamate, 2-ethoxyethyl para-methoxycinnamate, ethylhexyl para-methoxycinnamate, octyl para-methoxycinnamate, isopropyl alcohol, 3. The suncare formulation of claim 2, wherein the hydroxybenzoic acid is selected from the group consisting of amyl para-methoxycinnamate, 2-ethylhexyl-2-cyano-3,3-diphenyl-acrylate, 2-ethylhexyl-2-cyano-3,3-diphenyl-2-propenoate, 2-ethylhexyl-2-hydroxybenzoic acid, homomenthyl salicylate, glyceryl aminobenzoic acid, triethanolamine salicylate, diguaroyl trioleate, lawsone with dihydroxyacetone, 2-phenylbenzimidazole-5-sulfonic acid, 4-methylbenzylidene camphor, avobenzone, triazines, benzotriazoles, vinyl group-containing amides, cinnamic acid amides, sulfonated benzimidazoles), 3,3,5-trimethylcyclohexyl 2-hydroxybenzoate, and mixtures thereof.

5. The UV ray absorber is 5. A suncare formulation according to claim 4 which is a mixture of UV absorbers comprising 1-(4-methoxyphenol)-3-(4-tert-butylphenyl)propane-1,3-dione, 2-ethylhexyl 2-hydroxybenzoate, 2-ethylhexyl-2-cyano-3,3-diphenyl-2-propenoate, and 3,3,5-trimethylcyclohexyl-2-hydroxybenzoate.

6. The dermatologically acceptable organic carrier is １～４ 6. A sun care formulation according to claim 5, comprising a straight or branched chain alcohol.

7. 7. A suncare formulation according to claim 6, wherein the dermatologically acceptable organic carrier comprises ethanol.

8. 8. A suncare formulation according to claim 7, further comprising a dermatologically acceptable hydrophobic ester oil.

9. The color cosmetic formulation of claim 8 further comprising a color component.

10. 1. A method for protecting skin from sun exposure, comprising: Providing a sun care formulation according to claim 2; applying said sun care formulation to the skin; A method comprising:

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