Personal care composition

Abstract

Disclosed is a personal care composition comprising: (a) hydrophobically modified inulin; (b) glucoside surfactant; (c) phosphate surfactant; and (d) organic sunscreen, wherein the weight ratio of the total glucoside surfactant and phosphate surfactant to the hydrophobically modified inulin is at least 2:1.

Description

[0001] PERSONAL CARE COMPOSITION

[0002] Field of the Invention

[0003] The present invention relates to a personal care composition comprising: (a) hydrophobically modified inulin; (b) glucoside surfactant; (c) phosphate surfactant; and (d) organic sunscreen, wherein the weight ratio of the total glucoside surfactant and phosphate surfactant to the hydrophobically modified inulin is at least 2:1. It was surprisingly found that the composition is capable of providing improved sun protection.

[0004] Background of the Invention

[0005] Solar radiations include about 5% ultraviolet (UV) radiation, wavelength of which is between 200 nm and 400 nm. It is further divided into three regions: from 320 to 400 nm (UV-A), 280 to 320 nm (UV-B) and from 200 to 280 nm (UV-C). Substantial portion of UV-C radiation is absorbed by ozone. Scientific studies have indicated that exposure to UV-A and UV-B radiation for short period causes pigmentation, reddening of the skin and localized irritation, whereas continued or prolonged exposure can lead to sunburn, formation of wrinkles and age spots. UV radiation is also thought to cause significant damage to hair. Therefore, it is desirable to protect the skin and other keratinous substrates of the human body from the harmful effects of both UV-A and UV-B radiation.

[0006] This is often delivered through personal care compositions e.g. cosmetic compositions, which provide protection from ultraviolet (UV) radiation. Organic sunscreens e.g. 4-tert-butyl-4'-methoxydibenzoylmethane (BMDM) absorb the UVA radiation. The ability of a sunscreen to provide protection by absorbing UVA radiation is expressed in terms of UVA protection factor (UVAPF). On the other hand, organic sunscreens, e.g. 2-ethylhexyl 2-cyano-3,3-diphenylacrylate (OCR) and octyl methoxycinnamate (MCX) absorb the UVB radiation. The ability of a sunscreen to provide protection by absorbing UVB radiation is expressed in terms of sun protection factor (SPF).

[0007] Despite efforts so far, the present inventors have recognized that there are high needs to provide cosmetic composition with improved sun protection. It was surprisingly found that a sunscreen composition comprising: (a) hydrophobically modified inulin; (b) glucoside surfactant; (c) phosphate surfactant; and (d) organic sunscreen, wherein the weight ratio of the total glucoside surfactant and phosphate surfactant to the hydrophobically modified inulin is at least 2:1, is capable of provided enhanced sun protection. Summary of the Invention

[0008] In a first aspect, the present invention is directed to a personal care composition comprising: (a) hydrophobically modified inulin; (b) glucoside surfactant; (c) phosphate surfactant; and (d) organic sunscreen, wherein the weight ratio of the total glucoside surfactant and phosphate surfactant to the hydrophobically modified inulin is at least 2:1.

[0009] In a second aspect, the present invention is directed to a method of providing benefit selected from the group consisting of sun protection, preventing skin from UV damage, anti-aging, and a combination thereof, comprising the step of applying a composition of the present invention on the desired surface.

[0010] In a third aspect, the present invention is directed to use of a composition of the present invention for providing benefit selected from the group consisting of sun protection, preventing skin from UV damage, anti-aging, and a combination thereof.

[0011] All other aspects of the present invention will more readily become apparent upon considering the detailed description and examples which follow.

[0012] Detailed Description of the Invention

[0013] Except in the examples, or where otherwise explicitly indicated, all numbers in this description indicating amounts of material or conditions of reaction, physical properties of materials and / or use may optionally be understood as modified by the word “about”.

[0014] All amounts are by weight of the composition, unless otherwise specified.

[0015] It should be noted that in specifying any range of values, any particular upper value can be associated with any particular lower value.

[0016] For the avoidance of doubt, the word “comprising” is intended to mean “including” but not necessarily “consisting of’ or “composed of’. In other words, the listed steps or options need not be exhaustive. The disclosure of the invention as found herein is to be considered to cover all embodiments as found in the claims as being multiply dependent upon each other irrespective of the fact that claims may be found without multiple dependency or redundancy.

[0017] Where a feature is disclosed with respect to a particular aspect of the invention (for example a composition of the invention), such disclosure is also to be considered to apply to any other aspect of the invention (for example a method of the invention) mutatis mutandis.

[0018] “Hydrophobically modified inulin” as used herein refers to inulin modified with hydrophobic chains, especially inulin modified by the grafting of hydrophobic chains onto the hydrophilic backbone of the inulin.

[0019] Inulin may be obtained, for example, from chicory, dahlia and / or artichoke, preferably obtained from chicory.

[0020] Preferably the hydrophobically modified inulin is inulin with hydrophobic chains grafting onto the hydrophilic backbone of the inulin. The hydrophobic chains may be linear or branched, saturated or unsaturated hydrocarbon-based chains having 1 to 50 carbon atoms, and / or organopolysiloxane chains. These hydrocarbon- based or organopolysiloxane chains may comprise one or more ester, amide, urethane, carbamate, thiocarbamate, urea, thiourea and / or sulfonamide functions.

[0021] Preferably, the hydrophobically modified inulin is inulin bearing hydrophobic groups chosen from C4-C32 alkyl carbamate group, i.e. a group -OCONH-R, R being a C4-C32 alkyl, and C4-C32 alkyl ester group, i.e. a group -OCO-R, R being a C4-C32 alkyl. More preferably, the hydrophobically modified inulin is inulin bearing hydrophobic groups chosen from C10-C18 alkyl carbamate group, and C10-C18 alkyl ester group.

[0022] Preferably, the hydrophobically modified inulin is inulin bearing C6-C20 alkyl carbamate group, preferably Cs-Cis alkyl carbamate group, more preferably C10-C14 alkyl carbamate group. Alternatively, the hydrophobically modified inulin is inulin bearing C6-C20 alkyl ester group, preferably Cs-Cis alkyl ester group, more preferably C10-C14 alkyl ester group. Preferably, the hydrophobically modified inulin is selected from the group consisting of inulin lauryl carbamate, stearoyl inulin, palmitoyl inulin, and undecylenoyl inulin. The particularly preferred hydrophobically modified inulin is inulin lauryl carbamate.

[0023] Preferably, the inulin has a degree of polymerization from 2 to 1000, more preferably from 2 to 100 and even more preferably from 2 to 70.

[0024] The hydrophobically modified inulin may have a degree of substitution (proportion of OH of the inulin substituted with a hydrophobic group) from 0.01 to 0.5, preferably from 0.02 to 0.4 and more preferably from 0.05 to 0.35, and even more preferably from 0.1 to 0.3.

[0025] Preferably, the hydrophobically modified inulin is based on chicory inulin and in particular is inulin lauryl carbamate.

[0026] The hydrophobically modified inulin may be present in amount of 0.00001 to 10% by weight of the composition, preferably 0.0001 to 6%, more preferably 0.01 to 3% even more preferably 0.05 to 1% and still even more preferably 0.05 to 0.4% by weight of the composition.

[0027] Preferably the glucoside surfactant comprises hydrophobic chain having 1 to 50, preferably 2 to 36 carbon atoms. More preferably, the glucoside surfactant is alkyl glucoside. For sake of clarity, alkyl glucoside as used herein also include alkyl polyglucosides. Preferably, the glucoside surfactant comprises, preferably is C4-C32 alkyl glucosides. Preferably, glucoside surfactant may be represented by formula of RO - (G)n, wherein R is a branched or straight chain C4-C32 alkyl group which may be saturated or unsaturated, G is a saccharide group, and the degree of polymerisation, n, may have a value of from 1 to 10; Preferably R has a mean alkyl chain length of from Ce to C28, G is selected from C5 or Ce monosaccharide residues and n has a value of from 1 to 6; more preferably R has a mean alkyl chain length of from Cs to C24, G is glucose and n has a value of from 1 to 2.

[0028] Preferably, the glucoside surfactant comprises cetearyl glucoside, decyl glucoside, coco-glucoside, stearyl glucoside, lauryl glucoside, hexadecyl glucoside, octadecyl glucoside, decyl lauryl glucoside, lauroyl ethyl glucoside, myristoyl ethyl glucoside, oleoyl ethyl glucoside, methyl glucoside-coconut oil ester, capryl glucoside, caprylyl glucoside, or a combination thereof. More preferably the glucoside surfactant is selected from cetearyl glucoside, decyl glucoside, coco-glucoside, stearyl glucoside, lauryl glucoside, hexadecyl glucoside, octadecyl glucoside, capryl glucoside, caprylyl glucoside, or a combination thereof. Even more preferably, the glucoside surfactant is selected from cetearyl glucoside, hexadecyl glucoside, octadecyl glucoside, or a combination thereof. Still even more preferably the glucoside surfactant is cetearyl glucoside.

[0029] Preferably, the amount of glucoside surfactant is 0.0001 to 12% by weight of the composition, more preferably 0.01 to 7%, even more preferably 0.1 to 4%, and still even more preferably 0.2 to 2% by weight of the composition.

[0030] Phosphate surfactant as used herein refers to compounds which have at least one hydrophobic molecule part containing alkyl residues, typically C4-C36, preferably C8-C30, more preferably C12-C24 alkyl residues, and also have a hydrophilic part having a phosphate group. It is preferable the phosphate surfactant is a mixture of phosphate surfactants having differing alkyl chain lengths.

[0031] The phosphate surfactant can be used either in their protonated form (i.e. acid form), or in the form of corresponding phosphate salts, with alkali metal ions, ammonium ions, mono- / di- or trialkyl ammonium ions and mono- / di- or tri-(hydroxyalkyl)ammonium ions being preferred as suitable counterions. Particularly preferred phosphate surfactants are used as the free acid or as the sodium salt, potassium salt, ammonium salt, ethanolammonium salt (MEA), diethanolammonium salt (DEA) and / or triethanolammonium salt (TEA).

[0032] Preferably, the phosphate surfactant is selected from monoalkyl phosphate, dialkyl phosphate, monoalkyl ether phosphate dialkyl ether phosphate or mixture thereof.

[0033] The phosphate surfactant may be represented by the following formula (I).

[0034] Ri(CmH2mO)x(CnH2nO)yPO(OM)2(I)

[0035] wherein R1 is Ce-C28 linear or branched, saturated or unsaturated hydrocarbons, m and n are independently integers from 2 to 4, x and y are individually integers from 0 to 20 and each M is independently hydrogen, an alkali metal, quaternized amines, alkanolamine, or amino acid. Preferably in (I), R1 is Cs-C22linear or branched, saturated or unsaturated hydrocarbons, m and n are independently integers from 2 to 4, x and y are individually integers from 3 to 12 and each M is independently hydrogen, sodium or potassium. More preferably in (I), R1 is Cs-C22linear or branched, saturated or unsaturated hydrocarbons, m and n are independently integers from 2 to 4, x and y are 0 and each M is independently hydrogen, sodium or potassium. Preferably the phosphate surfactant comprises Cs-Cao alkyl phosphate, Cs-Cao alkyl ether phosphate, di(C8-Cao alkyl)phosphate, or mixtures thereof, preferably selected from C12-C24 alkyl phosphate, C12-C24 alkyl ether phosphate, di(Ci2-C24 alkyl)phosphate, or mixtures thereof. Even more preferably, the phosphate surfactant is Cs-Cao alkyl phosphate.

[0036] Preferably, the phosphate surfactant is selected from the group consisting of decyl phosphate, lauryl phosphate, C12-C13 alkyl phosphate, myristyl phosphate, cetyl phosphate, stearyl phosphate, isostearyl phosphate, cetearyl phosphate, oleyl phosphate, behenyl phosphate, or a mixture thereof. Most preferably, the phosphate surfactant is potassium cetyl phosphate.

[0037] Preferably, the phosphate surfactant is present in amount of 0.0001 to 12% by weight of the composition, preferably 0.001 to 8%, more preferably 0.05 to 5% even more preferably 0.1 to 2% and still even more preferably 0.2 to 1% by weight of the composition.

[0038] The composition comprises organic sunscreens. Sunscreens are known to absorb UV radiations and protect a surface on to which they are applied. Organic sunscreens that may be used in the present invention may be selected from IIV-A, IIV-B organic sunscreens and mixtures thereof. Preferably, the organic sunscreen comprises IIV-B organic sunscreens.

[0039] Suitable organic sunscreens may be selected from the group consisting of 2-hydroxy-4-methoxybenzophenone (known also as Benzophenone- 3), octyldimethyl p-aminobenzoic acid, digalloyltrioleate, 2,2-dihydroxy-4-methoxybenzophenone, ethyl-4-(bis(hydroxypropyl)) aminobenzoate, 2-ethylhexyl-2-cyano-3,3-diphenylacrylate, ethylhexyl salicylate, glyceryl p-aminobenzoate, 3,3,5-trimethylcyclohexylsalicylate, methyl anthranilate, p-dimethyl-aminobenzoic acid, aminobenzoate, 2-ethylhexyl-p-dimethyl- amino-benzoate, 2-phenylbenzimidazole-5-sulfonic acid, 2-(p-dimethylaminophenyl)-5-sulfonicbenzoxazoic acid, 2-ethylhexyl-p-methoxycinnamate, butylmethoxydibenzoylmethane, bis-ethylhexyloxyphenol methoxyphenol triazine 2-hydroxy-4- methoxybenzophenone, octyldimethyl-p-aminobenzoic acid, 4- methylbenzylidene camphor, methylene bis-benzotriazolyl tetramethylbutylphenol, dimethicodiethylbenzal malonate, isoamyl methoxycinnamate, octyl triazone, terephthalidene dicamphor sulfonic acid, homosalate, benzophenone-4, benzophenone-5, and mixtures thereof.

[0040] More preferably, the organic sunscreen comprises butyl methoxydibenzoylmethane, octyl methoxycinnamate, oxybenzone, octocrylene, phenylbenzimidazole sulfonic acid, ethylhexyl salicylate or a mixture thereof. Even more preferably, the organic sunscreen comprises octyl methoxycinnamate, phenylbenzimidazole sulfonic acid, or a mixture thereof.

[0041] Preferably, the organic sunscreen comprises cinnamate compound, phenylbenzimidazole compound, or a mixture thereof.

[0042] Cinnamate compound as used herein typically refers to salt, ester of cinnamic acid, one or more hydrogen in the benzene ring of cinnamic acid is replaced by Ci to C alkyl group and / or Ci to C alkoxy group. Particularly preferred cinnamate compound is selected from octyl methoxycinnamate, ethoxyethyl methoxycinnamate, isoamyl methoxycinnamate, or a mixture thereof.

[0043] Phenylbenzimidazole compound as used herein typically refers to compound having phenylbenzimidazole structure with at least one hydrogen in the benzene ring of phenylbenzimidazole is substituted, preferably by hydroxy group, Ci to Ce alkoxy group, sulfonic acid group, or sulfonate. Particularly preferred phenylbenzimidazole compound is selected from phenylbenzimidazole sulfonic acid, disodium phenyl dibenzimidazole tetrasulfonate or a mixture thereof.

[0044] A safe and effective amount of organic sunscreen may be used in the compositions useful in the composition. The amount of the organic sunscreen is preferably 0.1% to 35%, more preferably 0.5 to 27%, even more preferably from 3% to 22%, and most preferably 7 to 20% of by weight of the composition.

[0045] Preferably, the weight ratio of the total glucoside surfactant and phosphate surfactant to the hydrophobically modified inulin is 2:1 to 500:1, more preferably 2.5:1 to 80:1, even more preferably 5:1 to 500:1, still even more preferably 5:1 to 80:1, and particularly more preferably 7:1 to 25:1.

[0046] Preferably, the weight ratio of the glucoside surfactant to the hydrophobically modified inulin is 1.4:1 to 200:1, more preferably 1.4:1 to 60:1, even more preferably 3:1 to 200:1, still even more preferably 3:1 to 60:1, and particularly more preferably 4:1 to 15:1. Preferably, the weight ratio of the phosphate surfactant to the glucoside surfactant is in the range of 1:300 to 15:1, more preferably 1:60 to 15:1 or 1:25 to 15:1, even more preferably 1:15 to 12:1 or 1 :9 to 6: 1 , still even more preferably 1 :6 to 2: 1 or 1 :3 to 1 : 1.

[0047] Preferably, the weight ratio of the phosphate surfactant to the hydrophobically modified inulin is 0.7:1 to 100:1, more preferably 0.7:1 to 30:1, even more preferably 1.5:1 to 100:1, still even more preferably 1.5:1 to 30:1, and particularly more preferably 2:1 to 8:1.

[0048] Preferably the weight ratio of the organic sunscreen to total amount of the glucoside surfactant, the phosphate surfactant and the hydrophobically modified inulin is 1:4 to 100:1, more preferably 1:2 to 50:1, even more preferably 1:1 to 20:1, and still even more preferably 2:1 to 12:1.

[0049] Preferably the weight ratio of the organic sunscreen to the hydrophobically modified inulin is 2:1 to 4000:1, more preferably 8:1 to 1000:1, and even more preferably 20:1 to 400:1.

[0050] For sake of clarity, the glucoside surfactant is different from the phosphate surfactant or the hydrophobically modified inulin. The phosphate surfactant is different from the hydrophobically modified inulin.

[0051] Preferably, the present invention provides a sunscreen composition comprising: (a) inulin bearing C6-C20 alkyl carbamate group; (b) C4-C32 alkyl glucosides; (c) C8-C30 alkyl phosphate; and (d) organic sunscreen, wherein the weight ratio of the total (b) and (c) to the (a) is at least 2:1.

[0052] The inulin bearing C6-C20 alkyl carbamate group may be present in amount of 0.00001 to 10% by weight of the composition, preferably 0.0001 to 6%, more preferably 0.01 to 3% even more preferably 0.05 to 1% and still even more preferably 0.05 to 0.4% by weight of the composition.

[0053] Preferably, the amount of C4-C32 alkyl glucoside is 0.0001 to 12% by weight of the composition, more preferably 0.01 to 7%, even more preferably 0.1 to 4%, and still even more preferably 0.2 to 2% by weight of the composition.

[0054] Preferably, the total amount of C8-C30 alkyl phosphate is 0.0001 to 12% by weight of the composition, preferably 0.001 to 8%, more preferably 0.05 to 5% even more preferably 0.1 to 2% and still even more preferably 0.2 to 1% by weight of the composition. Preferably, the weight ratio of the total C4-C32 alkyl glucoside, C8-C30 alkyl phosphate to the inulin bearing C6-C20 alkyl carbamate group is 2:1 to 500:1, more preferably 2.5:1 to 80:1, even more preferably 5:1 to 500:1, still even more preferably 5:1 to 80:1, and particularly more preferably 7:1 to 25:1.

[0055] Preferably, the weight ratio of the C4-C32 alkyl glucoside to the inulin bearing C6-C20 alkyl carbamate group is 1.4:1 to 200:1, more preferably 1.4:1 to 60:1, even more preferably 3:1 to 200:1, still even more preferably 3:1 to 60:1, and particularly more preferably 4:1 to 15:1.

[0056] Preferably, the weight ratio of the C8-C30 alkyl phosphate to the inulin bearing C6-C20 alkyl carbamate group is 0.7:1 to 100:1, more preferably 0.7:1 to 30:1, even more preferably 1.5:1 to 100:1, still even more preferably 1.5:1 to 30:1, and particularly more preferably 2:1 to 8:1.

[0057] Preferably the weight ratio of the organic sunscreen to total amount of (a) inulin bearing C6-C20 alkyl carbamate group, (b) C4-C32 alkyl glucosides; and (c) C8-C30 alkyl phosphate, is 1 :4 to 100: 1 , more preferably 1:2 to 50:1, even more preferably 1:1 to 20:1, and still even more preferably 2:1 to 12:1.

[0058] Preferably the weight ratio of the organic sunscreen to inulin bearing C6-C20 alkyl carbamate group is 2:1 to 4000:1, more preferably 8:1 to 1000:1, and even more preferably 20:1 to 400:1.

[0059] Preferably, the composition comprises fatty alcohol, preferably C6-C28 fatty alcohol, more preferably C8-C24 fatty alcohol, even more preferably C12-C20 fatty alcohol. The amount of fatty alcohol is preferably 0.0001 to 12% by weight of the composition, more preferably 0.01 to 7%, even more preferably 0.1 to 4%, and still even more preferably 0.2 to 2% by weight of the composition.

[0060] The composition may comprise substituted resorcinol. Substituted resorcinol typically refers to that at least one hydrogen on the ring structure and / or on a hydroxy group of the resorcinol replaced with an alkyl group, phenyl alkyl group, or heterocyclic group. Preferably, the substituted resorcinol is 4-substituted resorcinol. Preferably, the substituted resorcinol is selected from 4-ethyl resorcinol, 4-butyl resorcinol, 4-hexyl resorcinol, phenylethyl resorcinol, thiamidol, or a mixture thereof, more preferably, the substituted resorcinol is selected from 4-ethyl resorcinol, 4-butyl resorcinol, 4-hexyl resorcinol, or a mixture thereof and even more preferably, the substituted resorcinol comprises 4-hexyl resorcinol. The amount of the substituted resorcinol is preferably in the range of 0.00001 to 10%, more preferably from 0.001 to 5% and most preferably from 0.1 to 0.6% by weight of the total amount of the composition.

[0061] Preferably, the composition comprises Vitamin B3 compounds (including derivatives of vitamin B3). The vitamin B3 compounds comprises niacin, nicotinic acid, niacinamide or a mixture thereof. The most preferred vitamin B3 compound is niacinamide. Amount of Vitamin B3 compounds may be 0.1 to 10%, preferably 0.5 to 5% by weight of the composition. 2-mercaptonicotinoyl glycine may also be included in the composition. Amount of 2-mercaptonicotinoyl glycine may be 0.0001 to 10%, preferably 0.01 to 1% by weight of the composition.

[0062] Preferably, the composition comprises a glutamate source selected from the group consisting of glutamine, glutamine ester, glutamic acid, pyroglutamic acid, salts, and mixtures thereof. More preferably, the composition comprises pyroglutamic acid and / or salt of pyroglutamic acid. Even more preferably, the composition comprises sodium salt of pyroglutamic acid. Preferably, the glutamate source is present in amount of 0.0001 to 10% by weight of the composition, more preferably 0.001 to 6%, even more preferably 0.01 to 3% by weight of the composition.

[0063] The composition may optionally comprise whitening pigment. Whitening pigments are typically particles of high refractive index materials. For example, the whitening pigment may have a refractive index of greater than 1.3, more preferably greater than 1.8 and most preferably from 2.0 to 2.7. Examples of such whitening pigment are those comprising bismuth oxy-chloride, boron nitride, barium sulfate, mica, silica, titanium dioxide, zirconium oxide, aluminium oxide, zinc oxide or combinations thereof. More preferred whitening pigment are particles comprising titanium dioxide, zinc oxide, zirconium oxide, mica, iron oxide or a combination thereof. Even more preferred whitening pigment are particles comprising zinc oxide, zirconium oxide, titanium dioxide or a combination thereof as these materials have especially high refractive index. Still even more preferably the whitening pigment is selected from titanium dioxide, zinc oxide or a mixture thereof and most preferred whitening pigment is titanium dioxide. The average diameter of whitening pigment is typical from 15 nm to 1 micron, more preferably from 35 nm to 800 nm, even more preferably from 50 nm to 500 nm and still even more preferably from 100 to 300 nm. Amount of whitening pigment may be 0.1 to 15%, preferably 0.5 to 5% by weight of the composition.

[0064] Preferably, the composition comprises polyhydric alcohol. Polyhydric alcohols may be selected from group of glycerin, propylyene glycol, dipropylene glycol, polypropylene glycol, polyethylene glycol, sorbitol, hydroxypropyl sorbitol, hexylene glycol, 1,3-butylene glycol, isoprene glycol, ethoxylated glycerol, propoxylated glycerol or a mixture thereof. Most preferred polyhydric alcohol is glycerol known also as glycerin. The amount of polyhydric alcohol may range anywhere from 0.1 to 20%, preferably 0.5 to 15% and more preferably 2 and 10% by weight of the composition.

[0065] Preferably, the composition comprises emollient materials. Suitable emollient materials include silicones, hydrocarbons, triglycerides or a mixture thereof. These silicones may be organic, silicone-containing or fluorine-containing, volatile or non-volatile, polar or non-polar. Hydrocarbons may include mineral oil, petrolatum and polyalpha-olefins. Examples of preferred volatile hydrocarbons includes isododecane, isodecane (e.g. Permethyl-99A which is available from Presperse Inc.), C12-C15 isoparaffins (such as the Isopar Series available from Exxon Chemicals). Illustrative triglycerides but not limiting are sunflower seed oil, cotton oil, canola oil, soybean oil, castor oil, borage oil, olive oil, shea butter, jojoba oil and mixtures thereof. Mono-and di- glycerides may also be useful. Particularly preferable are glyceryl monostearate and glyceryl distearate.

[0066] Preferably, the composition comprises moisturizing agents. Particularly preferred moisturizing agents includes, petrolatum, aquaporin manipulating actives, oat kernel flour, substituted urea like hydroxyethyl urea, hyaluronic acid and / or its precursor N-acetyl glucosamine, hyaluronic acid and / or its precursor N-acetyl glucosamine, or a mixture thereof.

[0067] Some compositions may include thickeners. These may be selected from cellulosics, natural gums and acrylic polymers but not limited by this thickening agent types. Preferably, the composition comprises thickener selected from cellulosics, natural gums and a mixture thereof. Preferably the amount of cellulosics and natural gums account for 70 to 100%, more preferably 85% to 100 based on the total amounts of cellulosics, natural gums and acrylic polymers. Among the cellulosics are sodium carboxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl methylcellulose and combinations thereof. Suitable gums include xanthan, pectin, karaya, agar, alginate gums and combinations thereof. Among the acrylic thickeners are homopolymers and copolymers of acrylic and methacrylic acids including carbomers such as Carbopol 1382, Carbopol 982, llltrez, Aqua SF-1 and Aqua SF-2 available from the Lubrizol Corporation. Amounts of thickener may range from 0.01 to 3% by weight of the active polymer (outside of solvent or water) in the compositions.

[0068] In addition, the compositions of the invention may further include 0.5 to 10% by weight of sequestering agents, such as tetra sodium ethylenediaminetetraacetate (EDTA), EHDP or mixtures; opacifiers and pearlizers such as ethylene glycol distearate, titanium dioxide or Lytron 621 (Styrene / Acrylate copolymer); all of which are useful in enhancing the appearance or properties of the product.

[0069] The composition may comprise water in amount of 10 to 96% by weight of the composition, more preferably from 25 to 92%, even more preferably from 42 to 88%, most preferably from 55 to 82% by weight of the composition.

[0070] Preferably, the composition has a viscosity of at least 10 mPa s, more preferably in the range 30 to 10000 mPa s, even more preferably 50 to 5000 mPa s, and most preferably 100 to 2000 mPa s, when measured at 20 degrees C at a relatively high shear rate of about 20 s'1.

[0071] Preferably, the composition is an emulsion, more preferably an oil-in-water emulsion. Preferably the composition is a fluid liquid at 25 °C and atmospheric pressure.

[0072] Preferably, the composition is an emulsion, more preferably an oil-in-water emulsion. Preferably, the composition is a skin care composition. The skin care composition refers to a composition suitable for topical application to human skin, including leave-on and wash-off products but preferably leave-on compositions. The term “leave-on” as used with reference to compositions herein means a composition that is applied to or rubbed on the skin and left thereon. The term “wash-off” as used with reference to compositions herein means a skin cleanser that is applied to or rubbed on the skin and rinsed off substantially immediately subsequent to application. Preferably the composition is a fluid liquid, and particularly a moisturizer rather than a make-up product. The term "skin" as used herein includes the skin on the face, neck, chest, abdomen, back, arms, under arms, hands, and legs. Preferably “skin” means includes the skin on the face and under arms, more preferably skin means skin on the face other than lips and eyelids.

[0073] Preferably, the composition is a topical composition. Preferably, the composition may be in the form of cream, lotion, ointment, solution, suspension, emulsion, paste, gel, powder, powder foundation, emulsion foundation, wax foundation, or spray. More preferably, the composition may be formulated in the form of cream, lotion, ointment, emulsion, gel, or a spray.

[0074] Preferably the use is non-therapeutic. Preferably the method is non-therapeutic. The term non-therapeutic typically means for cosmetic purposes and not curative or therapeutic purposes. The following examples are provided to facilitate an understanding of the invention. The examples are not intended to limit the scope of the claims.

[0075] Examples

[0076] Example 1

[0077] This example demonstrates the preparation of the compositions according to the present invention.

[0078] Table 1

[0079] Samples (% by weight) *

[0080] Ingredient

[0081] A B C D 1 2 E Water To 100 To 100 To 100 To 100 To 100 To 100 To 100 Inutec® SL-1a- - 0.50 0.50 0.50 2.00 4.00 Butylene Glycol

[0082] - 0.50 - - - - - Cocoate

[0083] Potassium Cetyl

[0084] 0.50 0.50 - 0.50 0.50 0.50 0.50 Phosphate

[0085] Emulgade® PL 68 / 50b2.00 2.00 2.00 - 2.00 2.00 2.00 Phenylbenzimidazole

[0086] 3.00 3.00 3.00 3.00 3.00 3.00 3.00 Sulfonic Acid

[0087] Ethylhexyl

[0088] 10.00 10.00 10.00 10.00 10.00 10.00 10.00 Methoxycinnamate

[0089] Sodium Hydroxide 0.40 0.40 0.40 0.40 0.40 0.40 0.40 Phenoxyethanol 0.70 0.70 0.70 0.70 0.70 0.70 0.70 Glycerin 5.00 5.00 5.00 5.00 5.00 5.00 5.00 Xanthan gum 1.00 1.00 1.00 1.00 1.00 1.00 1.00

[0090]

[0091] * The level refers to the level of listec ingredients based on the total composition.

[0092] a: Inutec® SL-1, procured from Ultra Chemical Inc., containing 25% of Inulin Lauryl Carbamate and 75% of glycerin based on the total weight of Inutec® SL-1.

[0093] b: Emulgade® PL 68 / 50, procured from BASF, containing 50% of Cetearyl Glucoside and 50% of Cetearyl Alcohol based on the total weight of Emulgade® PL 68 / 50.

[0094] The samples were prepared by following standard procedures according to Table 1. Example 2

[0095] This example demonstrates that the compositions of the present invention provided improved sun protection.

[0096] Table 2

[0097] Inulin Potassium Weight ratio of total Cetearyl Cetearyl

[0098] Sample Lauryl Cetyl Glucoside and Potassium Cetyl SPF Glucoside

[0099] Carbamate Phosphate Phosphate to Inulin Lauryl Carbamate A - 0.50 1.00 - 8.0 B - 0.50 1.00 - 6.5 C 0.125 - 1.00 - 8.1 D 0.125 0.50 - - 6.3 1 0.125 0.50 1.00 12:1 20.9 2 0.50 0.50 1.00 3:1 14.1

[0100]

[0101] E 1.00 0.50 1.00 1.5:1 3.3

[0102] The prepared samples were applied onto PMMA plates (7x7 cm2with roughness of about 6 pm, Schonberg GmbH & Co.) with amount of 2 mg of sample per square centimeter of PMMA plates using a syringe and spread uniformly. Glycerin was used as a blank control. After 30 minutes of drying, transmittance scan with wavelength of 290 to 400 nm were conducted on the PMMA plates by LabSphere UV-2000S SPF meter (LabSphere). The SPF values were obtained through the transmittance scan result by using the software of the SPF meter. All experiment were repeated three times. The average SPF were given in Table 2.

[0103] As evident from Tabel 2, it was surprisingly found that the compositions according to the present invention provided higher SPF. In contrast, those compositions outside the scope of the present invention provided relatively lower SPF, although containing same sunscreens with same amounts in the compositions.

Claims

Claims1. A personal care composition comprising:(a) hydrophobically modified inulin;(b) glucoside surfactant;(c) phosphate surfactant; and(d) organic sunscreen,wherein the weight ratio of the total glucoside surfactant and phosphate surfactant to the hydrophobically modified inulin is at least 2:1, the composition comprises thickener selected from cellulosics, natural gums and a mixture thereof, and the weight ratio of the phosphate surfactant to the glucoside surfactant is in the range of 1:300 to 15:1.

2. The composition according to claim 1 wherein the hydrophobically modified inulin is inulin bearing hydrophobic groups chosen from C4-C32 alkyl carbamate group, and C4-C32 alkyl ester group.

3. The composition according to claim 1 wherein the hydrophobically modified inulin is inulin bearing C6-C20 alkyl carbamate group, preferably the hydrophobically modified inulin is inulin lauryl carbamate.

4. The composition according to any one of the preceding claims wherein the hydrophobically modified inulin is present in amount of 0.00001 to 10% by weight of the composition, preferably 0.01 to 3% by weight of the composition.

5. The composition according to any one of the preceding claims wherein the glucoside is C4- C32 alkyl glucoside, preferably the glucoside surfactant is selected from cetearyl glucoside, decyl glucoside, coco-glucoside, stearyl glucoside, lauryl glucoside, hexadecyl glucoside, octadecyl glucoside, capryl glucoside, caprylyl glucoside, or a combination thereof.

6. The composition according to any one of the preceding claims wherein the amount of glucoside surfactant is 0.0001 to 12% by weight of the composition, preferably 0.1 to 4% by weight of the composition.

7. The composition according to any one of the preceding claims wherein the phosphate surfactant is C8-C30 alkyl phosphate, preferably the phosphate surfactant is potassium cetyl phosphate.

8. The composition according to any one of the preceding claims wherein the phosphate surfactant is present in amount of 0.0001 to 12% by weight of the composition, preferably 0.05 to 5% y weight of the composition.

9. The composition according to any one of the preceding claims wherein the organic sunscreen comprises butyl methoxydibenzoylmethane, octyl methoxycinnamate, oxybenzone, octocrylene, phenylbenzimidazole sulfonic acid, ethylhexyl salicylate or a mixture thereof, preferably the organic sunscreen comprises octyl methoxycinnamate, phenylbenzimidazole sulfonic acid, or a mixture thereof.

10. The composition according to any one of the preceding claims wherein the amount of the organic sunscreen is 0.1% to 35%, preferably 3% to 22% by weight of the composition.

11. The composition according to any one of the preceding claims wherein the weight ratio of the total glucoside surfactant and phosphate surfactant to the hydrophobically modified inulin is 2:1 to 500:1, preferably 5:1 to 500:1, more preferably 5:1 to 80:1.

12. The composition according to any one of the preceding claims wherein the weight ratio of the glucoside surfactant to the hydrophobically modified inulin is 1.4:1 to 200:1, preferably 3:1 to 200:1, more preferably 3:1 to 60:1.

13. The composition according to any one of the preceding claims wherein the weight ratio of the organic sunscreen to total amount of the glucoside surfactant, the phosphate surfactant and the hydrophobically modified inulin is 1:4 to 100:1, preferably 1:1 to 20:1.

14. A method of providing benefit selected from the group consisting of sun protection, preventing skin from UV damage, anti-aging, and a combination thereof, comprising the step of applying a composition of any one of the preceding claims on the desired surface.

15. Use of a composition of any one of the preceding claims 1 to 13 for providing benefit selected from the group consisting of sun protection, preventing skin from UV damage, anti-aging, and a combination thereof.

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