Composition comprising two polyglycerol fatty acid esters

Abstract

The present invention relates to a composition comprising: (a) at least one oil; (b) a first polyglycerol fatty acid ester; (c) a second polyglycerol fatty acid ester; and (d) water, wherein the composition has 150 NTU or less. The composition according to the invention may be less tacky.

Description

This application is a divisional application of the invention patent application entitled “Composition comprising two polyglycerol fatty acid esters” with application number 201980075986.X and filing date of November 6, 2019. Technical Field

[0001] The present invention relates to a composition, preferably a cosmetic or dermatological composition, comprising at least two different types of polyglycerol fatty acid esters. Background Art

[0002] Oil-in-water (O / W) or water-in-oil (W / O) emulsions are well known in the cosmetic and dermatological fields, in particular for the preparation of cosmetic products such as lotions, creams, tonics, serums or toilet waters.

[0003] In particular, miniemulsions such as O / W nanoemulsions or microemulsions are of particular interest in cosmetics due to their transparent or slightly translucent appearance.

[0004] On the other hand, compositions comprising polyglycerol fatty acid esters are known in the field of cosmetics and dermatology. Polyglycerol fatty acid esters can serve as surfactants, and therefore they can be generally used to prepare emulsions such as oil-in-water (O / W) or water-in-oil (W / O) emulsions. As compared to polyoxyethylene-based surfactants, polyglycerol fatty acid esters are preferred due to environmental reasons such as low environmental load. Summary of the invention

[0005] However, compositions including polyglycerol fatty acid esters tend to be sticky and often provide a sticky feel.

[0006] An object of the present invention is to provide a composition in the form of a nanoemulsion or microemulsion which can be less viscous even if the composition comprises polyglycerol fatty acid esters.

[0007] The above-mentioned object of the present invention can be achieved by comprising the following composition: (a) at least one oil; (b) at least one first polyglycerol fatty acid ester having an HLB value of 13.0 or more, preferably 13.5 or more, and more preferably 14.0 or more; (c) at least one second polyglycerol fatty acid ester having an HLB value of 10.0 or less, preferably 9.0 or less, and more preferably 8.0 or less; and (d) water, in The composition has a turbidity of 150 NTU or less, preferably 130 NTU or less, and more preferably 110 NTU or less.

[0008] The average HLB of (b) the first polyglycerol fatty acid ester and (c) the second polyglycerol fatty acid ester in the composition according to the present invention may be in the range of 11.5 to 14.0, preferably 12.0 to 13.5, and more preferably 12.5 to 13.0.

[0009] (a) The oil may be selected from polar oils.

[0010] The amount of (a) oil in the composition according to the invention may range from 0.01% to 20% by weight, preferably from 0.05% to 15% by weight and more preferably from 0.1% to 10% by weight relative to the total weight of the composition.

[0011] (b) The first polyglycerol fatty acid ester may include 2 to 4 glycerol units, preferably 3 or 4 glycerol units, and more preferably 4 glycerol units.

[0012] (b) The fatty acid portion of the first polyglycerol fatty acid ester may contain 12 carbon atoms or less, preferably 11 carbon atoms or less, and more preferably 10 carbon atoms or less.

[0013] The weight ratio of the amount of (b) the first polyglycerol fatty acid ester / the amount of (a) the oil in the composition according to the present invention may be in the range of 0.6 to 1.3, preferably 0.7 to 1.2, and more preferably 0.8 to 1.1.

[0014] (c) The second polyglycerol fatty acid ester may include 2 to 4 glycerol units, preferably 2 or 3 glycerol units, and more preferably 2 glycerol units.

[0015] (c) The fatty acid moiety of the second polyglycerol fatty acid ester may contain 14 or more carbon atoms, preferably 16 or more carbon atoms, and more preferably 18 or more carbon atoms.

[0016] The weight ratio of the amount of (c) the second polyglycerol fatty acid ester / the amount of (a) the oil in the composition according to the present invention may range from 0.1 to 0.9, preferably from 0.2 to 0.7, and more preferably from 0.3 to 0.5.

[0017] The weight ratio of (the total amount of (b) the first polyglycerol fatty acid ester and (c) the second polyglycerol fatty acid ester) / (a) the amount of oil in the composition according to the present invention may be 1.6 or less, preferably 1.5 or less, and more preferably 1.4 or less.

[0018] The composition according to the invention may be free of polyglycerol fatty acid esters comprising 5 or more glycerol units.

[0019] The composition according to the invention may be in the form of an O / W emulsion. The particle size of (a) oil in the emulsion may be 35 nm or less, preferably 30 nm or less, and more preferably 25 nm or less.

[0020] The invention also relates to a cosmetic method for treating keratinous materials, comprising the step of applying to the keratinous materials a composition according to the invention. DETAILED DESCRIPTION

[0021] After diligent studies, the present inventors have found that by using a combination of two different types of polyglycerol fatty acid esters, it is possible to provide a composition in the form of a nanoemulsion or microemulsion that may be less viscous and thus may provide a reduced sticky feeling after application even if the composition includes polyglycerol fatty acid esters.

[0022] The composition according to the invention may be characterized by a combination of: at least one first polyglycerol fatty acid ester having a higher HLB value; and At least one second polyglycerol fatty acid ester having a lower HLB value.

[0023] The higher HLB value of the first polyglycerol fatty acid ester may belong to a higher HLB numerical range, The lower HLB value of the second polyglycerol fatty acid ester may belong to a lower HLB numerical range, and The upper HLB value range and the lower HLB value range do not overlap with each other.

[0024] Therefore, one aspect of the invention is a composition comprising: (a) at least one oil; (b) at least one first polyglycerol fatty acid ester having an HLB value of 13.0 or more, preferably 13.5 or more, and more preferably 14.0 or more; (c) at least one second polyglycerol fatty acid ester having an HLB value of 10.0 or less, preferably 9.0 or less, and more preferably 8.0 or less; and (d) water, in The composition has a turbidity of 150 NTU or less, preferably 130 NTU or less, and more preferably 110 NTU or less.

[0025] Since the composition according to the present invention has a turbidity of 150 NTU or less, preferably 130 NTU or less, and more preferably 110 NTU or less, the composition may be transparent or translucent.

[0026] The composition according to the present invention may be less sticky and thus may provide a reduced sticky touch.Thus, the composition according to the present invention may provide an excellent feel during use, in particular the feel of the skin after application of the composition.

[0027] The term "stickiness" herein means the property of providing a tacky feeling to the skin.

[0028] The composition according to the present invention can be prepared without requiring a large amount of energy such as that required by a homogenizer. Therefore, the composition according to the present invention can be prepared by using a small amount of energy such as gently stirring the ingredients of the composition. Therefore, in view of its preparation method, the composition according to the present invention is environmentally friendly.

[0029] Hereinafter, the composition according to the present invention will be explained in more detail.

[0030] [Oil] The composition according to the invention comprises (a) at least one oil. If two or more oils are used, they may be identical or different.

[0031] "Oil" herein means a fatty compound or substance that is in the form of a liquid or paste (not solid) at room temperature (25°C) under atmospheric pressure (760 mmHg). As the oil, those generally used in cosmetics can be used alone or in combination thereof. These oils may be volatile or nonvolatile.

[0032] (a) The oil may be a non-polar oil such as hydrocarbon oil, silicone oil, etc.; a polar oil such as plant or animal oil and ester oil or ether oil; or a mixture thereof.

[0033] (a) The oil may be selected from the group consisting of oils of vegetable or animal origin, synthetic oils, silicone oils, hydrocarbon oils and fatty alcohols.

[0034] As examples of vegetable oils, mention may be made of, for example, linseed oil, camellia oil, macadamia oil, corn oil, mink oil, olive oil, avocado oil, tea oil, castor oil, safflower oil, jojoba oil, sunflower oil, almond oil, rapeseed oil, sesame oil, soybean oil, peanut oil, and mixtures thereof.

[0035] As examples of animal oils, mention may be made of, for example, squalene and squalane.

[0036] As examples of synthetic oils, there may be mentioned alkane oils such as isododecane and isohexadecane, ester oils, ether oils, and artificial triglycerides.

[0037] The ester oil is preferably a saturated or unsaturated, linear or branched C1-C 26 Aliphatic monobasic or polybasic acids and saturated or unsaturated, straight-chain or branched C1-C 26 Liquid esters of aliphatic monohydric or polyhydric alcohols, the total number of carbon atoms of the ester is greater than or equal to 10.

[0038] Preferably, for esters of monohydric alcohols, at least one of the alcohol and the acid from which the esters of the present invention are derived is branched.

[0039] Among the monoesters of monoacids and monoalcohols, mention may be made of ethyl palmitate, ethylhexyl palmitate, isopropyl palmitate, dicaprylyl carbonate, alkyl myristates such as isopropyl myristate or ethyl myristate, isocetyl stearate, 2-ethylhexyl isononanoate, isononyl isononanoate, isodecyl neopentanoate, and isostearyl neopentanoate.

[0040] C4-C can also be used 22 Dicarboxylic or tricarboxylic acids and C1-C 22 Esters of alcohols, and mono-, di- or tri-carboxylic acids and non-sugar C4-C 26 Esters of dihydric, trihydric, tetrahydric or pentahydric alcohols.

[0041] Mention may especially be made of: diethyl sebacate, isopropyl lauroyl sarcosinate, diisopropyl sebacate, bis(2-ethylhexyl) sebacate, diisopropyl adipate, di-n-propyl adipate, dioctyl adipate, bis(2-ethylhexyl) adipate, diisostearyl adipate, bis(2-ethylhexyl) maleate, triisopropyl citrate, triisocetylcitrate, triisostearyl citrate, glyceryl trilactate, tricaprylin, trioctyldodecanol citrate, trioleyl citrate, neopentyl glycol diheptanoate, diethylene glycol diisononanoate.

[0042] As ester oils, sugar esters and C6-C 30 , and preferably C 12 -C 22 Diesters of fatty acids. It is to be reiterated that the term "sugar" means oxygen-containing hydrocarbon-based compounds containing several alcohol functions, with or without aldehyde or ketone functions and comprising at least 4 carbon atoms. These sugars may be monosaccharides, oligosaccharides or polysaccharides.

[0043] Examples of suitable sugars that may be mentioned include sucrose (or saccharose), glucose, galactose, ribose, fucose, maltose, fructose, mannose, arabinose, xylose and lactose, and their derivatives, especially alkyl derivatives, such as methyl derivatives, for example methylglucose.

[0044] The sugar esters of fatty acids may be selected from the group consisting of the aforementioned sugars and linear or branched, saturated or unsaturated C6-C 30 , and preferably C 12 -C 22 The group of esters or mixtures of esters of fatty acids. If they are unsaturated, these compounds may have from one to three conjugated or nonconjugated carbon-carbon double bonds.

[0045] The esters according to this variant may also be chosen from monoesters, diesters, triesters, tetraesters and polyesters, and mixtures thereof.

[0046] These esters may be, for example, oleate, laurate, palmitate, myristate, behenate, cocoate, stearate, linoleate, linolenate, caprate and arachidonate, or mixtures thereof, such as, in particular, oleyl palmitate, oleostearate and palmitostearate mixed esters, and pentaerythritol tetraethylhexanoate.

[0047] More particularly, use is made of monoesters and diesters, and especially of sucrose, glucose or methylglucose mono- or dioleates, stearates, behenates, olealmitates, linoleates, linolenates and oleostearates.

[0048] An example that may be mentioned is the product sold by the company Amerchol under the name A product sold by DO which is methyl glucose dioleate.

[0049] As examples of preferred ester oils, mention may be made of, for example, diisopropyl adipate, dioctyl adipate, 2-ethylhexyl hexanoate, ethyl laurate, cetyl octanoate, octyldodecyl octanoate, isodecyl neopentanoate, myristyl propionate, 2-ethylhexyl 2-ethylhexanoate, 2-ethylhexyl octanoate, 2-ethylhexyl octanoate / caprate, methyl palmitate, ethyl palmitate, isopropyl palmitate, dicaprylyl carbonate, isopropyl lauroyl sarcosinate, isononyl isononanoate, ethylhexyl palmitate, isohexyl laurate, hexyl laurate, isocetyl stearate, isopropyl isostearate, isopropyl myristate, isodecyl oleate, glyceryl tri(2-ethylhexanoate), pentaerythritol tetra(2-ethylhexanoate), 2-ethylhexyl succinate, diethyl sebacate, and mixtures thereof.

[0050] As examples of artificial triglycerides, there may be mentioned, for example, decyl caprylin, trimyristin, tripalmitin, trilinolenic acid, trilaurin, tricaprin, tricaprylin, tri(capric acid / caprylic acid)glyceride, and tri(capric acid / caprylic acid / linolenic acid)glyceride.

[0051] As examples of silicone oils, there may be mentioned, for example, linear organopolysiloxanes such as dimethylpolysiloxane, methylphenylpolysiloxane, methylhydrogenpolysiloxane, etc.; cyclic organopolysiloxanes such as cyclohexasiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, etc.; and mixtures thereof.

[0052] Preferably, the silicone oil is chosen from liquid polydialkylsiloxanes, especially liquid polydimethylsiloxane (PDMS), and liquid polyorganosiloxanes comprising at least one aromatic group.

[0053] These silicone oils may also be organomodified.The organomodified silicones that can be used according to the invention are silicone oils as defined above and contain in their structure one or more organofunctional groups attached via hydrocarbon-based groups.

[0054] Organopolysiloxanes are defined in more detail in Walter Noll, Chemistry and Technology of Silicones (1968), Academic Press. They may be volatile or nonvolatile.

[0055] When they are volatile, the silicones are more particularly chosen from those having a boiling point between 60° C. and 260° C., and even more particularly from: (i) Cyclic polydialkylsiloxanes containing 3 to 7, and preferably 4 to 5, silicon atoms. These are, for example: 7207 or by Rhodia Octamethylcyclotetrasiloxane sold by Union Carbide under the name Volatile 7158, by Rhodia Mention may also be made of cyclic copolymers such as decamethylcyclopentasiloxane sold under the name Silsoft 1217 by Momentive Performance Materials, and mixtures thereof. Mention may also be made of cyclic copolymers such as the dimethylsiloxane / methylalkylsiloxane type, such as Silicone sold by the company Union Carbide. FZ 3109, having the following formula: Where D″ is And D′ is Mention may also be made of mixtures of cyclic polydialkylsiloxanes with organosilicon compounds, such as a mixture of octamethylcyclotetrasiloxane and tetrakis(trimethylsilyl)pentaerythritol (50 / 50), and a mixture of octamethylcyclotetrasiloxane and oxy-1,1′-bis(2,2,2′,2′,3,3′-hexa(trimethylsiloxy))neopentane; and (ii) containing 2 to 9 silicon atoms and having a viscosity of less than or equal to 5×10 -6 m 2 / s linear volatile polydialkylsiloxane. An example is decamethyltetrasiloxane sold in particular by the company Toray Silicone under the name SH 200. Silicones belonging to this class are also described in the article published in Cosmetics and Toiletries, Volume 91, January 1976, pages 27-32, Todd & Byers, Volatile Silicone Fluids for Cosmetics. The viscosity of the silicones is measured at 25°C according to ASTM standard 445, Appendix C.

[0056] It is also possible to use nonvolatile polydialkylsiloxanes. These nonvolatile silicones are more particularly chosen from polydialkylsiloxanes, among which mention may mainly be made of polydimethylsiloxanes containing trimethylsilyl end groups.

[0057] Among these polydialkylsiloxanes, mention may be made in a non-limiting manner of the following commercial products: - 47 and 70047 series sold by Rhodia Oil or Oil, for example, oil 70047V500000; -Sold by Rhodia Series of oils; - Oils of the 200 series from Dow Corning, such as those with a viscosity of 60000 mm 2 / s DC 200; and -From General Electric Oils and certain oils from General Electric's SF series (SF 96, SF 18).

[0058] Mention may also be made of the polydimethylsiloxanes containing dimethylsilanol end groups known under the name dimethiconol (CTFA), such as the oils of the 48 series from the company Rhodia.

[0059] Among the silicones containing aryl groups, mention may be made of polydiarylsiloxanes, especially polydiphenylsiloxanes and polyalkylarylsiloxanes, such as phenyl silicone oils.

[0060] The phenyl silicone oil can be selected from the phenyl silicones of the following formula: in R1 to R 10 are independently saturated or unsaturated linear, cyclic or branched C1-C 30 A hydrocarbon group, preferably based on C1-C 12a hydrocarbon group, and more preferably a C1-C6 hydrocarbon-based group, in particular a methyl, ethyl, propyl or butyl group, and m, n, p and q are independently of one another an integer from 0 to 900 (inclusive), preferably from 0 to 500 (inclusive), and more preferably from 0 to 100 (inclusive), The condition is that the sum of n+m+q is not zero.

[0061] Examples which may be mentioned include the products sold under the names: - From the 70641 series of Rhodia Oil; -From Rhodia Oils of the 70633 and 763 series; - oil from Dow Corning Dow Corning 556 Cosmetic Grade Fluid; - Silicones from the PK series from Bayer, such as the product PK20; - Certain oils from the SF series from General Electric, such as SF 1023, SF 1154, SF 1250 and SF1265.

[0062] As the phenyl silicone oil, phenyl trimethylsiloxane (in the above formula, R1 to R 10 is methyl; p, q and n = 0; m = 1).

[0063] The organomodified liquid silicones may contain in particular polyethyleneoxy and / or polypropyleneoxy groups. Mention may be made, therefore, of silicone KF-6017 from Shin-Etsu and of oils from Union Carbide. L722 and L77.

[0064] The hydrocarbon oil may be selected from: - straight chain or branched, optionally cyclic C6-C 16 Lower alkanes. Examples that may be mentioned include hexane, undecane, dodecane, tridecane, and isoparaffins such as isohexadecane, isododecane and isodecane; and - straight-chain or branched hydrocarbons containing more than 16 carbon atoms, such as liquid paraffin, liquid petroleum jelly, polydecene and hydrogenated polyisobutylene, such as and squalane.

[0065] As preferred examples of the hydrocarbon oil, there can be mentioned, for example, straight-chain or branched hydrocarbons such as isohexadecane, isododecane, squalane, mineral oil (e.g., liquid paraffin), paraffin, vaseline or petrolatum, naphthalene and the like; hydrogenated polyisobutene, isoeicosane, and decene / butene copolymers; and mixtures thereof.

[0066] The term "fat" in fatty alcohol means inclusions with a relatively large number of carbon atoms. Therefore, alcohols with 4 or more, preferably 6 or more, and more preferably 12 or more carbon atoms are included in the scope of fatty alcohol. Fatty alcohols may be saturated or unsaturated. Fatty alcohols may be straight chain or branched.

[0067] The fatty alcohol may have the structure R-OH, wherein R is selected from saturated and unsaturated, linear and branched groups containing 4 to 40 carbon atoms, preferably 6 to 30 carbon atoms, and more preferably 12 to 20 carbon atoms. In at least one embodiment, R may be selected from C 12 -C 20 Alkyl and C 12 -C 20 R may or may not be substituted with at least one hydroxyl group.

[0068] As examples of fatty alcohols, mention may be made of lauryl alcohol, cetyl alcohol, stearyl alcohol, isostearyl alcohol, behenyl alcohol, undecyl alcohol, myristyl alcohol, octyldodecanol, hexyldecanol, oleyl alcohol, linoleyl alcohol, palmitoleyl alcohol, arachidonic alcohol, erucyl alcohol, and mixtures thereof.

[0069] Preferably the fatty alcohol is a saturated fatty alcohol.

[0070] Therefore, the fatty alcohol can be selected from linear or branched, saturated or unsaturated C6-C 30 Alcohol, preferably a linear or branched, saturated C6-C 30 Alcohol, and more preferably a linear or branched, saturated C 12 -C 20 alcohol.

[0071] The term "saturated fatty alcohol" herein means an alcohol having a long aliphatic saturated carbon chain. Preferably, the saturated fatty alcohol is selected from any linear or branched, saturated C6-C 30 Fatty alcohol. In straight chain or branched chain, saturated C6-C 30 Among the fatty alcohols, linear or branched, saturated C 12 -C 20 Fatty alcohols. Any linear or branched, saturated C 16 -C 20 Fatty alcohols. Even more preferably, branched C 16 -C 20 Fatty alcohol.

[0072] As examples of saturated fatty alcohols, mention may be made of lauryl alcohol, cetyl alcohol, stearyl alcohol, isostearyl alcohol, behenyl alcohol, undecyl alcohol, myristyl alcohol, octyldodecanol, hexyldecanol, and mixtures thereof. In one embodiment, cetyl alcohol, stearyl alcohol, octyldodecanol, hexyldecanol or mixtures thereof (e.g., cetearyl alcohol) and behenyl alcohol may be used as saturated fatty alcohols.

[0073] According to at least one embodiment, the fatty alcohol used in the composition according to the invention is preferably chosen from cetyl alcohol, octyldodecanol, hexyldecanol and mixtures thereof.

[0074] It is also preferred that (a) the oil is selected from oils having a molecular weight below 600 g / mol.

[0075] Preferably, (a) the oil has a low molecular weight, such as less than 600 g / mol, selected from: 12 ) ester oils (e.g., isopropyl lauroyl sarcosinate, isopropyl myristate, isopropyl palmitate, isononyl isononanoate, and ethylhexyl palmitate), silicone oils (e.g., volatile silicones such as cyclohexasiloxane), hydrocarbon oils (e.g., isododecane, isohexadecane, and squalane), branched and / or unsaturated fatty alcohols (C 12 -C 30 ) type oils, such as octyldodecanol and oleyl alcohol, and ether oils, such as dicaprylyl ether.

[0076] Preferably, the (a) oil is selected from polar oils, and more preferably from ester oils.

[0077] The amount of (a) oil in the composition according to the invention may be 0.01 wt % or more, preferably 0.05 wt % or more and more preferably 0.1 wt % or more relative to the total weight of the composition.

[0078] The amount of (a) oil in the composition according to the invention may be 20% by weight or less, preferably 15% by weight or less and more preferably 10% by weight or less relative to the total weight of the composition.

[0079] The amount of (a) oil in the composition according to the invention may range from 0.01% to 20% by weight, preferably from 0.05% to 15% by weight and more preferably from 0.1% to 10% by weight relative to the total weight of the composition.

[0080] [First polyglycerol fatty acid ester] The composition according to the present invention comprises (b) at least one first polyglycerol fatty acid ester having an HLB value of 13.0 or more, preferably 13.5 or more, and more preferably 14.0 or more. A single type of (b) first polyglycerol fatty acid ester may be used, or two or more different types of (b) first polyglycerol fatty acid esters may be used in combination.

[0081] (b) The first polyglycerol fatty acid ester may serve as a surfactant, particularly a nonionic surfactant.

[0082] (b) The first polyglycerol fatty acid may have an HLB value of 13.0 to 17.0, preferably 13.5 to 16.0, and more preferably 14.0 to 15.0.

[0083] The term HLB ("hydrophile-lipophile balance") is well known to those skilled in the art and reflects the ratio between the hydrophilic and lipophilic parts of a molecule.

[0084] If two or more (b) first polyglycerol fatty acid esters are used, the HLB value is determined by weight average of the HLB values ​​of all (b) first polyglycerol fatty acid esters.

[0085] (b) The first polyglycerol fatty acid ester may be selected from mono-, di-, tri- and polyesters of saturated or unsaturated fatty acids.

[0086] It is preferred that the (b) first polyglycerol fatty acid ester contains 2 to 4 glycerol units, preferably 3 or 4 glycerol units, and more preferably 4 glycerol units.

[0087] (b) The fatty acid or fatty acid moiety of the fatty acid portion of the first polyglycerol fatty acid ester may contain 12 carbon atoms or less, preferably 11 carbon atoms or less, and more preferably 10 carbon atoms or less. (b) The fatty acid or fatty acid moiety of the fatty acid portion of the first polyglycerol fatty acid ester may contain 4 or more carbon atoms, preferably 6 or more carbon atoms, and more preferably 8 or more carbon atoms. (b) The fatty acid or fatty acid moiety of the fatty acid portion of the first polyglycerol fatty acid ester may have 4 to 12, preferably 6 to 11 carbon atoms, and more preferably 8 to 10 carbon atoms.

[0088] (b) The fatty acid of the fatty acid portion of the first polyglycerol fatty acid ester may be saturated or unsaturated, and may be selected from caprylic acid, capric acid, and lauric acid.

[0089] (b) The first polyglycerol fatty acid ester may be selected from the group consisting of PG3 caprate (HLB: about 14), PG4 caprylate (HLB: 14), PG4 laurate (HLB: about 14), PG4 caprate (HLB: 14), PG5 myristate (HLB: 15.4), PG5 stearate (HLB: 15), PG6 caprylate (HLB: 14.6), PG6 caprate (HLB: 13.1), PG6 laurate (HLB: 14.1), PG10 laurate (HLB: 15.2), PG10 myristate (HLB: 14.9), PG10 stearate (HLB: 14.1), PG10 isostearate (HLB: 13.7), PG10 oleate (HLB: 13.0), PG10 cocoate (HLB: 16), and mixtures thereof.

[0090] It may be preferred that the (b) first polyglycerol fatty acid ester is selected from the group consisting of PG3 caprate (HLB: about 14), PG4 caprylate (HLB: 14), PG4 laurate (HLB: about 14), PG4 caprate (HLB: 14), and a mixture thereof.

[0091] The amount of (b) the first polyglycerol fatty acid ester in the composition according to the present invention may be 0.01 wt % or more, preferably 0.05 wt % or more, and more preferably 0.1 wt % or more, relative to the total weight of the composition.

[0092] On the other hand, the amount of (b) the first polyglycerol fatty acid ester in the composition according to the present invention may be 15 wt % or less, preferably 10 wt % or less, and more preferably 5 wt % or less relative to the total weight of the composition.

[0093] The amount of (b) the first polyglycerol fatty acid ester in the composition according to the present invention may range from 0.01 to 15 wt %, preferably from 0.05 to 10 wt %, and more preferably from 0.1 to 5 wt % relative to the total weight of the composition.

[0094] The weight ratio of the amount of (b) the first polyglycerol fatty acid ester / the amount of (a) the oil in the composition according to the present invention may be in the range of 0.6 to 1.3, preferably 0.7 to 1.2, and more preferably 0.8 to 1.1.

[0095] [Second polyglycerol fatty acid ester] The composition according to the present invention comprises (c) at least one second polyglycerol fatty acid ester having an HLB value of 10.0 or less, preferably 9.0 or less, and more preferably 8.0 or less. A single type of (c) second polyglycerol fatty acid ester may be used, or two or more different types of (c) second polyglycerol fatty acid esters may be used in combination.

[0096] (c) The second polyglycerol fatty acid ester may serve as a surfactant, particularly a nonionic surfactant.

[0097] (c) The second polyglycerol fatty acid may have an HLB value of 5.0 to 10.0, preferably 6.0 to 9.0, and more preferably 7.0 to 8.0.

[0098] If two or more (c) second polyglycerol fatty acid esters are used, the HLB value is determined by weight average of the HLB values ​​of all (c) second polyglycerol fatty acid esters.

[0099] (c) The second polyglycerol fatty acid ester may be selected from mono-, di-, tri- and polyesters of saturated or unsaturated fatty acids.

[0100] It is preferred that the (c) second polyglycerol fatty acid ester contains 2 to 4 glycerol units, preferably 2 or 3 glycerol units, and more preferably 2 glycerol units.

[0101] (c) The fatty acid or fatty acid moiety of the fatty acid portion of the second polyglycerol fatty acid ester may contain 14 or more carbon atoms, preferably 16 or more carbon atoms, and more preferably 18 or more carbon atoms. (c) The fatty acid or fatty acid moiety of the fatty acid portion of the second polyglycerol fatty acid ester may contain 30 or less carbon atoms, preferably 24 or less carbon atoms, and more preferably 20 or less carbon atoms. (c) The fatty acid or fatty acid moiety of the fatty acid portion of the second polyglycerol fatty acid ester may have 14 to 30, preferably 16 to 24, and more preferably 18 to 20 carbon atoms.

[0102] (c) The fatty acid of the fatty acid portion of the second polyglycerol fatty acid ester may be saturated or unsaturated, and may be selected from myristic acid, stearic acid, isostearic acid and oleic acid.

[0103] (c) the second polyglycerol fatty acid ester may be selected from the group consisting of PG2 stearate (HLB: 5.0), PG2 distearate (HLB: 4), PG2 isostearate (HLB: 8), PG2 diisostearate (HLB: 3.2), PG2 triisostearate (HLB: 3), PG2 sesquiisostearate (HLB: about 4), PG2 oleate (HLB: 8), PG2 sesquioleate (HLB: 5.3), PG3 distearate (HLB: 5), PG3 diisostearate (HLB: 5), PG3 dicocoate (HLB: 7), PG5 hexastearate (HLB: 4.0), PG5 trioleate (HLB: 7.0), PG10 pentaoleate (HLB: 5.3). LB: 6.4), PG2 sesquicaprylate (HLB: about 8), PG2 caprate (HLB: 9.5), PG2 laurate (HLB: 8.5), PG2 myristate (HLB: 10), PG2 isopalmitate (HLB: 9), PG4 oleate (HLB: 10), PG4 stearate (HLB: 9), PG4 isostearate (HLB: 8.2), PG6 distearate (HLB: 8), PG10 distearate (HLB: about 9), PG10 tristearate (HLB: 8), PG10 diisostearate (HLB: 10), PG10 triisostearate (HLB: 8), PG10 tricocoate (HLB: 9), and mixtures thereof.

[0104] It is preferred that (c) the second polyglycerol fatty acid is selected from the group consisting of PG2 stearate (HLB: 5.0), PG2 distearate (HLB: 4), PG2 isostearate (HLB: 8), PG2 diisostearate (HLB: 3.2), PG2 triisostearate (HLB: 3), PG2 sesquiisostearate (HLB: about 4), PG2 oleate (HLB: 8), PG2 sesquioleate (HLB: 5.3), PG3 distearate (HLB: 5. ), PG3 diisostearate (HLB: 5), PG3 dicocoate (HLB: 7), PG2 sesquicaprylate (HLB: about 8), PG2 caprate (HLB: 9.5), PG2 laurate (HLB: 8.5), PG2 myristate (HLB: 10), PG2 isopalmitate (HLB: 9), PG4 oleate (HLB: 10), PG4 stearate (HLB: 9), PG4 isostearate (HLB: 8.2), and mixtures thereof.

[0105] The amount of (c) the second polyglycerol fatty acid ester in the composition according to the present invention may be 0.01 wt % or more, preferably 0.05 wt % or more, and more preferably 0.1 wt % or more, relative to the total weight of the composition.

[0106] On the other hand, the amount of (c) the second polyglycerol fatty acid ester in the composition according to the present invention may be 10 wt % or less, preferably 5 wt % or less, and more preferably 1 wt % or less relative to the total weight of the composition.

[0107] The amount of (c) the second polyglycerol fatty acid ester in the composition according to the present invention may range from 0.01 to 10 wt %, preferably from 0.05 to 5 wt %, and more preferably from 0.1 to 1 wt % relative to the total weight of the composition.

[0108] The weight ratio of the amount of (c) the second polyglycerol fatty acid ester / the amount of (a) the oil in the composition according to the present invention may range from 0.1 to 0.9, preferably from 0.2 to 0.7, and more preferably from 0.3 to 0.5.

[0109] [Amount of polyglycerol fatty acid ester] According to the present invention, the weight ratio of (the total amount of (b) the first polyglycerol fatty acid ester and (c) the second polyglycerol fatty acid ester) / (a) the amount of oil may be 1.6 or less, preferably 1.5 or less, and more preferably 1.4 or less.

[0110] Conventionally, the weight ratio of the amount of glycerol fatty acid ester / triglyceride oil is much higher, such as 6.0.

[0111] Therefore, the composition according to the present invention can reduce or limit the total amount of polyglycerol fatty acid esters.

[0112] Since the present invention can reduce the total amount of polyglycerol fatty acid ester, the composition according to the present invention can provide a non-sticky feel or can provide a further reduced sticky feel.

[0113] It may be preferred that the weight ratio of (the total amount of (b) the first polyglycerol fatty acid ester and (c) the second polyglycerol fatty acid ester) / (a) the amount of oil is higher than 0.1, preferably higher than 0.5, and more preferably higher than 1.0.

[0114] [Average HLB of polyglycerol fatty acid esters] The average HLB of (b) the first polyglyceryl fatty acid ester and (c) the second polyglyceryl fatty acid ester in the composition according to the present invention may be 11.5 or more, preferably 12.0 or more, and more preferably 12.5 or more.

[0115] The average HLB of (b) the first polyglyceryl fatty acid ester and (c) the second polyglyceryl fatty acid ester in the composition according to the present invention may be 14.0 or less, preferably 13.5 or less, and more preferably 13.0 or less.

[0116] Therefore, in one embodiment of the present invention, the average HLB of (b) the first polyglycerol fatty acid ester and (c) the second polyglycerol fatty acid ester in the composition according to the present invention may be in the range of 11.5 to 14.0, preferably 12.0 to 13.5, and more preferably 12.5 to 13.0.

[0117] [water] The composition according to the present invention comprises (d) water.

[0118] The amount of (d) water in the composition according to the invention may be 60% by weight or more, preferably 70% by weight or more, and more preferably 80% by weight or more, relative to the total weight of the composition.

[0119] On the other hand, the amount of (d) water in the composition according to the present invention may be 95 wt% or less, preferably 90 wt% or less, and more preferably 85 wt% or less relative to the total weight of the composition.

[0120] The amount of (d) water in the composition according to the invention may range from 60% to 95% by weight, preferably from 70% to 90% by weight, more preferably from 80% to 85% by weight relative to the total weight of the composition.

[0121] [Polyol] The composition according to the invention may further comprise at least one polyol. A single type of polyol may be used, or two or more different types of polyols may be used in combination.

[0122] The term "polyol" herein means an alcohol having two or more hydroxyl groups, and does not encompass sugars or derivatives thereof. Derivatives of sugars include sugar alcohols obtained by reducing one or more carbonyl groups of sugars, and sugars or sugar alcohols in which the hydrogen atoms in one or more hydroxyl groups thereof have been replaced by at least one substituent such as an alkyl group, a hydroxyalkyl group, an alkoxy group, an acyl group, or a carbonyl group.

[0123] The polyol can be C2-C 12 A polyol, preferably a C2-C9 polyol, comprising at least 2 hydroxyl groups, and preferably 2 to 5 hydroxyl groups.

[0124] The polyol may be a natural or synthetic polyol. The polyol may have a linear, branched or cyclic molecular structure.

[0125] The polyol may be selected from glycerol and its derivatives, and diols and their derivatives. The polyol may be selected from the group consisting of glycerol, diglycerol, polyglycerol, ethylene glycol, diethylene glycol, propylene glycol, dipropylene glycol, butylene glycol, pentylene glycol, hexylene glycol, 1,3-propanediol, 1,5-pentanediol, polyethylene glycol (5 to 50 ethylene oxide groups), and sugars such as sorbitol.

[0126] The amount of polyol in the composition according to the invention may be 0.01% by weight or more, preferably 0.05% by weight or more and more preferably 0.1% by weight or more relative to the total weight of the composition.

[0127] On the other hand, the amount of polyol in the composition according to the invention may be 25 wt% or less, preferably 20 wt% or less and more preferably 15 wt% or less relative to the total weight of the composition.

[0128] Thus, the polyol may be present in the composition according to the invention in an amount ranging from 0.01% to 25% by weight and preferably from 0.05% to 20% by weight, such as from 0.1% to 15% by weight relative to the total weight of the composition.

[0129] [Other ingredients] The composition according to the invention may contain one or more monohydric alcohols in liquid form at room temperature (25° C.), such as, for example, linear or branched monohydric alcohols containing 1 to 6 carbon atoms, such as ethanol, propanol, butanol, isopropanol, isobutanol, pentanol and hexanol.

[0130] The amount of monohydric alcohol in the composition according to the invention may be 0.01% by weight or more, preferably 0.1% by weight or more and more preferably 1% by weight or more relative to the total weight of the composition.

[0131] On the other hand, the amount of monohydric alcohol in the composition according to the invention may be 15 wt% or less, preferably 10 wt% or less, and more preferably 5 wt% or less, relative to the total weight of the composition.

[0132] Thus, the amount of monoalcohol in the composition according to the invention may range from 0.01% to 15% by weight, preferably from 0.1% to 10% by weight and more preferably from 1% to 5% by weight relative to the total weight of the composition.

[0133] In addition to the ingredients specified above, the composition according to the invention may also include various adjuvants commonly used in cosmetic and dermatological compositions, such as: thickeners, anionic, nonionic, cationic and amphoteric or zwitterionic polymers, anionic, nonionic, cationic and amphoteric surfactants, antioxidants, colorants, chelating agents, sequestering agents, fragrances, dispersants, conditioning agents, film formers, preservatives, co-preservatives, and mixtures thereof.

[0134] In one embodiment, the composition according to the present invention does not contain polyglycerol fatty acid esters comprising 5 or more glycerol units, such as PG5 laurate. The term "does not contain" means that the composition according to the present invention may contain a limited amount of polyglycerol fatty acid esters comprising 5 or more glycerol units. However, the amount of polyglycerol fatty acid esters preferably comprising 5 or more glycerol units is limited so that it is less than 1 weight %, more preferably less than 0.1 weight %, and even more preferably less than 0.01 weight % relative to the gross weight of the composition. Most preferably, the composition according to the present invention does not contain polyglycerol fatty acid esters comprising 5 or more glycerol units.

[0135] In another embodiment, the composition according to the present invention does not contain a polyoxyethylene-based nonionic surfactant. The term "does not contain" means that the composition according to the present invention may contain a limited amount of a polyoxyethylene-based nonionic surfactant. However, it is preferred that the amount of the polyoxyethylene-based nonionic surfactant is limited so that it is less than 1% by weight, more preferably less than 0.1% by weight, and even more preferably less than 0.01% by weight relative to the total weight of the composition. Most preferably, the composition according to the present invention does not contain a polyoxyethylene-based nonionic surfactant.

[0136] (preparation) The composition according to the present invention can be prepared by mixing the essential ingredients as described above and, where necessary, the optional ingredients as described above.

[0137] The method and equipment for mixing the above essential and optional ingredients are not limited. Any conventional method and equipment can be used to mix the above essential and optional ingredients to prepare the composition according to the present invention.

[0138] The composition according to the present invention can be prepared without requiring a large amount of energy such as that required by a homogenizer. Therefore, the composition according to the present invention can be prepared by using a small amount of energy such as gently stirring the ingredients of the composition. Therefore, in view of its preparation method, the composition according to the present invention is environmentally friendly.

[0139] [form] The composition according to the invention is in the form of a nanoemulsion or a microemulsion.

[0140] "Microemulsion" can be defined in two ways, namely in a broad sense and in a narrow sense. In other words, there is a case ("microemulsion in the narrow sense"), in which microemulsion refers to a thermodynamically stable homogeneous single liquid phase containing a ternary system, the three components of which are an oil-containing component, an aqueous component and a surfactant, and a second case ("microemulsion in the broad sense"), in which, among the thermodynamically unstable typical emulsion systems, microemulsions additionally include those such emulsions that exhibit a transparent or translucent appearance due to their smaller particle size (Satoshi Tomomasa et al., Oil Chemistry, Vol. 37, No. 11 (1988), pp. 48-53). As used herein, "microemulsion" refers to a "microemulsion in the narrow sense", i.e., a thermodynamically stable homogeneous single liquid phase.

[0141] The microemulsion refers to any state of an O / W (oil-in-water) type microemulsion in which oil is dissolved by micelles, a W / O (water-in-oil) type microemulsion in which water is dissolved by reverse micelles, or a bicontinuous microemulsion in which the number of associations of surfactant molecules is made infinite so that both the aqueous phase and the oil phase have a continuous structure.

[0142] The microemulsion may have a dispersed phase having a particle size of 100 nm or less, preferably 50 nm or less, and more preferably 20 nm or less, as measured by laser granulometry.

[0143] "Nanoemulsion" means here an emulsion characterized by a dispersed phase having a size of less than 350 nm, the dispersed phase being stabilized by a corona of (b) to (d) nonionic surfactants which may optionally form a lamellar liquid crystal phase at the dispersed phase / continuous phase interface. In the absence of specific opacifiers, the transparency of the nanoemulsion is caused by the small size of the dispersed phase, which is obtained by using mechanical energy.

[0144] Nanoemulsions can be distinguished from microemulsions by their structure. Specifically, microemulsions are thermodynamically stable dispersions formed, for example, by micelles formed by components (b) and (c) and swollen by component (a). In addition, microemulsions do not require large amounts of mechanical energy for preparation.

[0145] The nanoemulsion may have a dispersed phase having a particle size of 300 nm or less, preferably 200 nm or less, and more preferably 100 nm or less, as measured by laser granulometry.

[0146] Preferably, the composition according to the invention is in the form of an O / W emulsion comprising an oil phase dispersed in a continuous aqueous phase. The dispersed oil phase may be oil droplets in the aqueous phase.

[0147] The O / W construction or structure consisting of an oil phase dispersed in an aqueous phase has an external aqueous phase, and thus in the case where the composition according to the present invention has an O / W construction or structure, it can provide a pleasant feeling during use due to the immediate freshness that the aqueous phase can provide.

[0148] Even more preferably, the particle size of (a) the oil is 35 nm or less, preferably 30 nm or less, and more preferably 25 nm or less. The particle size can be measured by dynamic light scattering. Particle size measurement can be performed by, for example, a particle size analyzer ELSZ-2000 series sold by Otsuka Electronics Co., Ltd.

[0149] The particle size may be a volume average particle diameter or a number average particle diameter, preferably a volume average particle diameter.

[0150] The composition according to the invention may be transparent.

[0151] Transparency can be measured by measuring turbidity, for example, turbidity can be measured with a 2100Q (sold by the company Hach) having a circular chamber (25 mm in diameter and 60 mm in height) and a tungsten lamp that emits visible light (between 400 nm and 800 nm, preferably 400 to 500 nm). The measurement can be performed on the undiluted composition. A blank can be determined with distilled water.

[0152] The composition according to the present invention has a turbidity of 150 NTU or less, preferably 130 NTU or less, and more preferably 110 NTU or less.

[0153] [Methods and Uses] Preferably, the composition according to the invention is a cosmetic or dermatological composition, more preferably a cosmetic composition, and more preferably a cosmetic composition for keratinous substances such as the skin.

[0154] The composition according to the invention can be used in a non-therapeutic method, such as a cosmetic method, for treating keratinous materials such as the skin, hair, mucous membranes, nails, eyelashes, eyebrows and / or scalp by application to the keratinous materials.

[0155] The invention therefore also relates to a cosmetic method for treating keratinous materials, comprising the step of applying to the keratinous materials a composition according to the invention.

[0156] The invention may also relate to the use of a composition according to the invention as or in a cosmetic product, such as a care product, a washing product, a make-up product, a make-up remover product for the body and / or facial skin and / or mucous membranes and / or scalp and / or hair and / or nails and / or eyelashes and / or eyebrows.

[0157] In other words, the composition according to the present invention can be used as a cosmetic as it is. Alternatively, the composition according to the present invention can be used as a component of a cosmetic. For example, the composition according to the present invention can be added to any other component or combined with any other component to form a cosmetic.

[0158] Care products can be lotions, creams, hair growth oils, conditioners, sunscreens, etc. Cleansing products can be shampoos, facial cleansers, hand soaps, etc. Makeup products can be foundations, mascara, lipsticks, lip glosses, rouge, eye shadows, nail polishes, etc. Makeup removal products can be cosmetic cleansers, etc.

[0159] Another aspect of the present invention relates to: (b) at least one first polyglycerol fatty acid ester having an HLB value of 13.0 or more, preferably 13.5 or more, and more preferably 14.0 or more, and (c) at least one second polyglycerol fatty acid ester having an HLB value of 10.0 or less, Use of a composition comprising: (a) at least one oil, and (d) water.

[0160] Another aspect of the present invention also relates to a method for preparing a composition having a turbidity of 150 NTU or less, preferably 130 NTU or less, and more preferably 110 NTU or less, the method comprising the step of mixing: (a) at least one oil; (b) at least one first polyglycerol fatty acid ester having an HLB value of 13.0 or more, preferably 13.5 or more, and more preferably 14.0 or more, (c) at least one second polyglycerol fatty acid ester having an HLB value of 10.0 or less, and (d) Water.

[0161] Preferably the mixing step is carried out by a so-called low energy method without the need for special mechanical stirrers such as homogenizers which use a lot of energy. The low energy method can be carried out by only gently stirring ingredients (a) to (d).

[0162] Preferably, the above-mentioned composition in the uses and methods according to the invention is in the form of an O / W nanoemulsion or microemulsion.

[0163] The present invention also relates to: (b) at least one first polyglycerol fatty acid ester having an HLB value of 13.0 or more, preferably 13.5 or more, and more preferably 14.0 or more, and (c) at least one second polyglycerol fatty acid ester having an HLB value of 10.0 or less, In an O / W emulsion comprising: (a) at least one oil, and (e) water, Use for preparing oil droplets of (a) oil having a particle size of 35 nm or less, preferably 30 nm or less, and more preferably 25 nm or less.

[0164] The present invention also relates to a method for preparing oil droplets of (a) oil having a particle size of 35 nm or less, preferably 30 nm or less and more preferably 25 nm or less in an O / W nanoemulsion or microemulsion comprising (a) oil and (d) water, the method comprising the steps of adding to the emulsion or using in the emulsion: (b) at least one first polyglycerol fatty acid ester having an HLB value of 13.0 or more, preferably 13.5 or more, and more preferably 14.0 or more, and (c) at least one second polyglycerol fatty acid ester having an HLB value of 10.0 or less.

[0165] The above descriptions of ingredients (a) to (d) and optional ingredients of the composition according to the invention are applicable to those ingredients of the uses and methods according to the invention. The descriptions of the preparation and forms of the composition according to the invention are also applicable to those preparations and forms of the composition described in the above uses and methods. Example

[0166] The present invention will be described in more detail by way of examples, but this should not be construed as limiting the scope of the present invention.

[0167] [Examples 1 and 2 and Comparative Example 1] The following compositions according to Examples 1 and 2 and Comparative Example 1 shown in Table 1 were prepared by mixing the components shown in Table 1 below.

[0168] Examples 1 and 2 (1) Heat and mix the ingredients of Phase A at about 60°C to form a homogeneous mixture of the ingredients of Phase A.

[0169] (2) Heat and mix the ingredients of Phase B at about 60°C to form a homogeneous mixture of the ingredients of Phase B.

[0170] (3) Cool the mixture of Phase A ingredients and the mixture of Phase B ingredients to about 30°C or below.

[0171] (4) Add the mixture of Phase A ingredients to the mixture of Phase B ingredients under gentle mixing.

[0172] (5) Then, the ingredients of phase C are added to the mixture obtained in the above step (4) at room temperature to prepare a composition.

[0173] Comparative Example 1 (1) Heat and mix the ingredients of Phase A at about 70°C to form a homogeneous mixture of the ingredients of Phase A.

[0174] (2) Heat and mix the ingredients of Phase B at about 70°C to form a homogeneous mixture of the ingredients of Phase B.

[0175] (3) Cool the mixture of Phase A ingredients and the mixture of Phase B ingredients to about 30°C or below.

[0176] (4) Add the mixture of Phase B ingredients to the mixture of Phase A ingredients under gentle mixing.

[0177] (5) Then, the ingredients of phase C are added to the mixture obtained in the above step (4) at room temperature to prepare a composition.

[0178] The compositions according to Examples 1 and 2 and Comparative Example 1 were in the form of O / W emulsions.

[0179] The numerical values ​​of the component amounts shown in Table 1 are all based on "weight %" as active raw materials.

[0180] Table 1 [Evaluate] (viscosity) The viscosity of the compositions according to Examples 1 and 2 and Comparative Example 1 was measured as follows.

[0181] Sample preparation 30 mg of each of the compositions according to Examples 1 and 2 and Comparative Example 1 was uniformly applied to a polyurethane substrate (P002-001 from Beaulax) having a size of 3 cm×3 cm (width)×4 mm (thickness).

[0182] The composition was allowed to dry at 20°C for 30 minutes and spread with the fingers.

[0183] Measurement The viscosity of each composition was measured by using a texture analyzer TA.XT plus having a 20 mm cylinder (P / 20) composed of aluminum. The measurement conditions were as follows.

[0184] Test mode: Compression Speed ​​before test: 10mm / s Test speed: 0.1mm / sec Speed ​​after test: 10mm / sec Count: 10 Data analysis The average of 10 counts of the negative peak (g) was determined as the viscosity.

[0185] The results are shown as "g" in Table 1. The smaller the g value, the less viscous the composition.

[0186] (Turbidity) The turbidity of the compositions according to Examples 1 and 2 and Comparative Example 1 was measured at room temperature by using a turbidity meter (2100Q portable, Hach Company).

[0187] The results are shown as "NTU" in Table 1. The smaller the NTU value, the more transparent the composition.

[0188] (granularity) The particle sizes (nm) of oil droplets in the compositions according to Examples 1 and 2 and Comparative Example 1 were measured by a particle size analyzer ELSZ-2000ZS (Otsuka Electronics Co., Ltd.).

[0189] The results are shown in Table 1.

[0190] Examples 1 and 2 show that using a combination of two different types of polyglycerol fatty acid esters can provide less stickiness.

[0191] Comparative Example 1 shows that the use of a single polyglycerol fatty acid ester provides higher viscosity than Examples 1 and 2.

Claims

1. A composition in the form of an O / W emulsion, comprising: (a) at least one oil; (b) a first polyglyceryl fatty acid ester, which is PG-4 caprate; (c) a second polyglyceryl fatty acid ester selected from PG-2 oleate and PG-2 isostearate; and (d) water, in The composition has a turbidity of 150 NTU or less, and The amount of polyglycerol fatty acid esters containing 5 or more glycerol units in the composition is less than 1 wt % relative to the total weight of the composition.

2. The composition according to claim 1, wherein the (a) oil is selected from polar oils.

3. The composition according to claim 1, wherein the amount of the (a) oil in the composition is in the range of 0.01 wt% to 20 wt% relative to the total weight of the composition.

4. The composition according to claim 1, wherein a weight ratio of the amount of the (b) first polyglycerol fatty acid ester / the amount of the (a) oil in the composition is in the range of 0.6 to 1.

3. 5 . The composition according to claim 1 , wherein the amount of the (b) first polyglycerol fatty acid ester in the composition is in the range of 0.01 wt % to 15 wt % relative to the total weight of the composition.

6. The composition according to claim 1, wherein the amount of the (c) second polyglycerol fatty acid ester in the composition is in the range of 0.01 wt% to 10 wt% relative to the total weight of the composition.

7. The composition according to claim 1, wherein the weight ratio of the amount of the (c) second polyglycerol fatty acid ester / the amount of the (a) oil in the composition is in the range of 0.1 to 0.

9.

8. The composition according to claim 1, wherein the weight ratio of (the total amount of the (b) first polyglycerol fatty acid ester and the (c) second polyglycerol fatty acid ester) / the amount of the (a) oil is 1.6 or less.

9. The composition according to claim 1, wherein the amount of the (d) water in the composition is in the range of 60 wt% to 95 wt% relative to the total weight of the composition.

10. The composition according to claim 1, wherein the particle size of the (a) oil is 35 nm or less.

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