Anhydrous composition for caring for and / or making up keratin materials
An anhydrous composition for keratin materials, containing specific non-ionic surfactants, oils, and polyols, addresses the challenges of forming a microemulsion and stickiness, achieving effective and comfortable application.
Patent Information
- Application Number
- PCT/CN2023/140198
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2023-12-20
- Publication Date
- 2025-06-26
AI Technical Summary
Existing anhydrous compositions for caring for and/or making up keratin materials often struggle to form a microemulsion when mixed with water or a hydrous composition, and can be sticky, which is unpleasant for consumers.
An anhydrous composition comprising at least one non-ionic surfactant with a HLB value of 11-15, more than 0.5 wt.% of an oil selected from N-acyl amino acid esters or esters of aliphatic polycarboxylic acids and aliphatic alcohols, and at least one C2-C6 polyol, which forms a microemulsion upon gentle mixing with water or a hydrous composition without being sticky.
The composition effectively forms a microemulsion when mixed with water or a hydrous composition, providing a non-sticky sensation and enhancing the bioavailability of cosmetic active ingredients for keratin materials.
Smart Images

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Abstract
Description
ANHYDROUS COMPOSITION FOR CARING FOR AND / OR MAKING UP KERATIN MATERIALSTECHNICAL FIELD
[0001] The present invention relates to an anhydrous composition for caring for and / or making up keratin materials. The present invention also relates to a non-therapeutic process for caring for and / or making up keratin materials.BACKGROUND ART
[0002] It is a common practice in the cosmetic field to prepare compositions comprising various active ingredients for a variety of purposes. Besides, it has always been an ultimate goal of the cosmetic field to deliver to the consumers’ high efficient products with skin benefits such as hydration, moisturizing, whitening, cleansing, freshness and so on.
[0003] However, some cosmetic active ingredients are sensitive to water and / or oxygen, typical representatives including ascorbic acid, ferulic acid, and tocopherol.
[0004] Some products focus on water-free cosmetic base to avoid contacting with water. For example, there are some kits comprising an anhydrous composition and a hydrous composition, wherein the cosmetic active ingredients present in the form of anhydrous powder. However, bioavailability of the active ingredient is a challenge for some products. There are some kits comprising an anhydrous composition and a hydrous composition, wherein cosmetic active ingredients is present in the anhydrous composition, the two compositions can form a microemulsion when mixed together. However, some anhydrous compositions are sticky, which is unpleasant for consumers.
[0005] There is still a need for an anhydrous composition, especially for caring for and / or making up keratin materials, which can form a microemulsion when mixed with water or a hydrous composition, not too sticky.SUMMARY OF THE INVENTION
[0006] Thus, one object of the present invention is to provide an anhydrous composition, especially for caring for and / or making up keratin materials, which can form a microemulsion when mixed with water or a hydrous composition, not too sticky.
[0007] Another object of the present invention is to provide a non-therapeutic process for caring for and / or making up keratin materials.
[0008] According to the first aspect, the present invention provides an anhydrous composition, preferably for caring for and / or making up keratin materials, comprising:
[0009] a) at least one non-ionic surfactant with a HLB value of 11-15 at the temperature of 25℃ selected from polyglyceryl fatty acid esters, polyoxyethylenated (1-40 EO) and polyoxypropylenated (1-30 PO) alkyl (C16-C30) ethers, alkyl polyglycosides, and a combination thereof;
[0010] b) more than 0.5 wt. %of at least one oil selected from N-acyl amino acid esters, esters of aliphatic polycarboxylic acids and aliphatic alcohols comprising from 1 to 10 carbon atoms, and a combination thereof, relative to the total weight of the composition; and
[0011] c) at least one C2-C6 polyol.
[0012] The inventors have found that the anhydrous composition can form a microemulsion when mixed with water or a hydrous composition by gentle mixing, which presents no sticky sensation.
[0013] The hydrous composition according to the present invention comprises 40 wt. %or above of water, relative to the total weight of the composition.
[0014] According to the second aspect, the present invention provides a non-therapeutic process for caring for and / or making up keratin materials, comprising:
[0015] i) mixing the anhydrous composition according to the present invention and a hydrous composition to form a microemulsion; and
[0016] ii) applying the microemulsion to the keratin materials.
[0017] Other subjects and characteristics, aspects and advantages of the present invention will emerge even more clearly on reading the detailed description and the examples that follow.DETAILED DESCRIPTION OF THE INVENTION
[0018] As used herein, unless otherwise indicated, the limits of a range of values are included within this range, in particular in the expressions "between…and…" and "range from…to…” .
[0019] As used herein, the term “comprising” is to be interpreted as encompassing all specifically mentioned features as well as optional, additional, unspecified ones.
[0020] As used herein, the use of the term “comprising” also discloses the embodiment wherein no features other than the specifically mentioned features are present (i.e. “consisting of” ) .
[0021] As used herein, the expression "at least one" used in the present description is equivalent to the expression "one or more" .
[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the field the present invention belongs to. When the definition of a term in the present description conflicts with the meaning as commonly understood by those skilled in the field the present invention belongs to, the definition described herein shall apply.
[0023] Unless otherwise specified, all numerical values expressing amount of ingredients and the like used in the description and claims are to be understood as being modified by the term “about” . Accordingly, unless indicated to the contrary, the numerical values and parameters described herein are approximate values which are capable of being changed according to the desired performance obtained as required.
[0024] All percentages in the present invention refer to weight percentage, unless otherwise specified.
[0025] For the purposes of the present invention, the term “keratin materials” is intended to cover human skin, mucous membranes such as the lips. Facial skin is most particularly considered according to the present invention.
[0026] For the purposes of the present invention, the term "anhydrous" means that the composition according to the present invention contains less than 2 wt. %and preferably less than 1 wt. %of water relative to the total weight of the composition, more preferably contains no water. Where appropriate, the small amounts of water may be provided by ingredients of the composition that contain it in residual amount but are not deliberately provided.
[0027] The anhydrous composition according to the present invention comprises:
[0028] a) at least one non-ionic surfactant with a HLB value of 11-15 at the temperature of 25℃ selected from polyglyceryl fatty acid esters, polyoxyethylenated (1-40 EO) and polyoxypropylenated (1-30 PO) alkyl (C16-C30) ethers, alkyl polyglycosides, and a combination thereof;
[0029] b) more than 0.5 wt. %of at least one oil selected from N-acyl amino acid esters, esters of aliphatic polycarboxylic acids and aliphatic alcohols comprising from 1 to 10 carbon atoms, and a combination thereof, relative to the total weight of the composition; and
[0030] c) at least one C2-C6 polyol.
[0031] Non-ionic surfactant
[0032] The anhydrous composition according to the present invention comprises at least one non-ionic surfactant with a HLB value of 11-15 at the temperature of 25℃ selected from polyglyceryl fatty acid esters, polyoxyethylenated (1-40 EO) and polyoxypropylenated (1-30 PO) alkyl (C16-C30) ethers, alkyl polyglycosides, and a combination thereof.
[0033] The HLB (hydrophile-lipophile balance) value is defined according to Griffin’s method in J. Ploughshare. Cosm. Chem. 1954 (volume 5) , pages 249-256. In particular, “HLB” value relates to the ratio of hydrophilic groups and lipophilic groups in surfactants, and also relates to solubility of the surfactants. Higher HLB surfactants are more soluble in hydrophilic system.
[0034] Polyglyceryl fatty acid ester
[0035] Preferably, the anhydrous composition of the present invention comprises at least one polyglyceryl fatty acid ester.
[0036] Preferably, the polyglyceryl fatty acid ester is selected from mono-, di-and tri-esters of glycerin and a saturated or unsaturated fatty acid including 8 to 12 carbon atoms, such as lauric acid, capric acid, and caprylic acid.
[0037] Preferably, the polyglyceryl fatty acid ester is selected from PG2 caprate, PG2 dicaprate, PG2 tricaprate, PG2 caprylate, PG2 dicaprylate, PG2 tricaprylate, PG2 laurate, PG2 dilaurate, PG2 trilaurate, PG3 caprate, PG3 dicaprate, PG3 tricaprate, PG3 caprylate, PG3 dicaprylate, PG3 tricaprylate, PG3 laurate, PG3 dilaurate, PG3 trilaurate, PG4 dicaprate, PG4 tricaprate, PG4 caprylate, PG4 dicaprylate, PG4 tricaprylate, PG4 laurate, PG4 dilaurate, PG4 trilaurate, PG5 caprate, PG5 dicaprate, PG5 tricaprate, PG5 caprylate, PG5 dicaprylate, PG5 tricaprylate, PG5 laurate, PG5 dilaurate, PG5 trilaurate, PG6 caprate, PG6 dicaprate, PG6 tricaprate, PG6 caprylate, PG6 dicaprylate, PG6 tricaprylate, PG6 laurate, PG6 dilaurate, PG6 trilaurate, PG7 caprate, PG7 dicaprate, PG7 tricaprate, PG7 caprylate, PG7 dicaprylate, PG7 tricaprylate, PG7 laurate, PG7 dilaurate, PG7 trilaurate, PG8 caprate, PG8 dicaprate, PG8 tricaprate, PG8 caprylate, PG8 dicaprylate, PG8 tricaprylate, PG8 laurate, PG8 dilaurate, PG8 trilaurate, PG9 caprate, PG9 dicaprate, PG9 tricaprate, PG9 caprylate, PG9 dicaprylate, PG9 tricaprylate, PG9 laurate, PG9 dilaurate, PG9 trilaurate, PG10 caprate, PG10 dicaprate, PG10 tricaprate, PG10 caprylate, PG10 dicaprylate, PG10 tricaprylate, PG10 dilaurate, and PG10 trilaurate.
[0038] It is more preferable that the polyglyceryl fatty acid ester is selected from polyglyceryl caprylate with a polyglyceryl moiety derived from 2 to 10 glycerol units.
[0039] As examples of polyglyceryl caprylate with a polyglyceryl moiety derived from 2 to 10 glycerol units, mention can be made of polyglyceryl-6 caprylate, for example, a product sold by the company TAIYO KAGAKU under the name SUNSOFT Q-8H-C.
[0040] Polyoxyethylenated (1-40EO) and polyoxypropylenated (1-30PO) alkyl (C16-C30) ether
[0041] Preferably, the anhydrous composition of the present invention comprises at least one polyoxyethylenated (1-40 EO) and polyoxypropylenated (1-30 PO) alkyl (C16-C30) ether.
[0042] Preferably, the polyoxyethylenated (1-40 EO) and polyoxypropylenated (1-30 PO) alkyl (C16-C30) ether which may be used as the non-ionic surfactants according to the present invention, is selected from:
[0043] PPG-6 Decyltetradeceth-30; Polyoxyethylene (30) Polyoxypropylene (6) Tetradecyl Ether such as those sold as Nikkol PEN-4630 from Nikko Chemicals Co.,
[0044] PPG-6 Decyltetradeceth-12; Polyoxyethylene (12) Polyoxypropylene (6) Tetradecyl Ether such as those sold as Nikkol PEN-4612 from Nikko Chemicals Co.,
[0045] PPG-13 Decyltetradeceth-24; Polyoxyethylene (24) Polyoxypropylene (13) Decyltetradecyl Ether such as those sold as UNILUBE 50MT-2200B from NOF Corporation,
[0046] PPG-6 Decyltetradeceth-20; Polyoxyethylene (20) Polyoxypropylene (6) Decyltetradecyl Ether such as those sold as Nikkol PEN-4620 from Nikko Chemicals Co.,
[0047] PPG-4 Ceteth-1; Polyoxyethylene (1) Polyoxypropylene (4) Cetyl Ether such as those sold as Nikkol PBC-31 from Nikko Chemicals Co.,
[0048] PPG-8 Ceteth-1; Polyoxyethylene (1) Polyoxypropylene (8) Cetyl Ether such as those sold as Nikkol PBC-41 from Nikko Chemicals Co.,
[0049] PPG-4 Ceteth-10; Polyoxyethylene (10) Polyoxypropylene (4) Cetyl Ether such as those sold as Nikkol PBC-33 from Nikko Chemicals Co.,
[0050] PPG-4 Ceteth-20; Polyoxyethylene (20) Polyoxypropylene (4) Cetyl Ether such as those sold as Nikkol PBC-34 from Nikko Chemicals Co.,
[0051] PPG-5 Ceteth-20; Polyoxyethylene (20) Polyoxypropylene (5) Cetyl Ether such as those sold as Procetyl AWS from Croda Inc.,
[0052] PPG-8 Ceteth-20; Polyoxyethylene (20) Polyoxypropylene (8) Cetyl Ether such as those sold as Nikkol PBC-44 from Nikko Chemicals Co., and
[0053] PPG-23 Steareth-34; Polyoxyethylene Polyoxypropylene Stearyl Ether (34 EO) (23 PO) such as those sold as Unisafe 34S-23 from Pola Chemical Industries.
[0054] It is more preferable that the polyoxyethylenated (1-40 EO) and polyoxypropylenated (1-30 PO) alkyl (C16-C30) ether is selected from polyoxyethylenated (15-40 EO) and polyoxypropylenated (5-30 PO) alkyl (C16-C24) ethers, for example, PPG-6 Decyltetradeceth-30, PPG-13 Decyltetradeceth-24, PPG-6 Decyltetradeceth-20, PPG-5 Ceteth-20, PPG-8 Ceteth-20, and PPG-23 Steareth-34.
[0055] It is most preferable that the polyoxyethylenated (1-40 EO) and polyoxypropylenated (1-30 PO) alkyl (C16-C30) ether is selected from PPG-6 Decyltetradeceth-30, PPG-13 Decyltetradeceth-24, PPG-5 Ceteth-20, PPG-8 Ceteth-20, and a combination thereof.
[0056] Alkyl polyglycosides
[0057] Preferably, the anhydrous composition of the present invention comprises at least one alkyl polyglycoside.
[0058] Preferably, the alkyl polyglycosides which may be used as the non-ionic surfactant according to the present invention are of formula (I) : R-O-Gx’ (I)
[0059] wherein
[0060] R is a C6-C12alkyl group, preferably C6-C10 alkyl group,
[0061] G is a moiety derived from a reducing saccharide containing from 5 to 6 carbon atoms, preferably a glucose unit, and
[0062] x’ represents the average degree of polymerisation of the alkyl polyglycoside from 1 to 10.
[0063] For a preferred alkyl polyglycoside, x’ can only assume integral values. In any physical sample of alkyl polyglycosides, there will generally be molecules having different values of x’. The physical sample can be characterized by the average value of x’, which can assume non-integral values. In this disclosure, the values of x’ are to be understood to be average values.
[0064] The polysaccharide hydrophilic portion of the alkyl polyglycoside contains from about 1 to about 10, preferably from 1.4 to 3, saccharide units on the average. The saccharide unit may be galactoside, glucoside, lactoside, fructoside, glucosyl, fructosyl, lactosyl, and / or galactosyl units, and preferably glucoside unit. Mixtures of these saccharide moieties may be used in the alkyl poly saccharide. Glucoside is the preferred saccharide moiety.
[0065] The hydrophobic group on the alkyl polyglycoside is an alkyl group, linear or branched, containing from about 6 to about 12 carbon atoms on average. Preferably the alkyl group is primarily a straight chain C6-C10 alkyl group.
[0066] Useful alkyl polyglycosides of the present invention are also disclosed in U.S. Patent 4,565,647, Llenado, issued January 21, 1986, having a hydrophobic group containing from about 6 to about 12 carbon atoms, preferably from about 6 to about 10 carbon atoms and a polysaccharide, e.g., a polyglycoside, hydrophilic group containing from about 1.3 to about 10, preferably from about 1.3 to about 3, most preferably from about 1.3 to about 2.7 saccharide units. Any reducing saccharide containing 5 or 6 carbon atoms can be used, e.g., glucose, galactose and galactosyl moieties can be substituted for the glucosyl moieties (optionally the hydrophobic group is attached at the 2-, 3-, 4-, etc. positions thus giving a glucose or galatose as opposed to a glucoside or galactoside) . The intersaccharide bonds can be, e.g., between the one position of the additional saccharide units and the 2-, 3-, 4-, and / or 6-positions on the preceding saccharide units.
[0067] Preferably, in formula (I) :
[0068] R is a C8-C10 alkyl group,
[0069] G is selected from galactoside, glucoside, lactoside, fructoside, glucosyl, fructosyl, lactosyl, and galactosyl units,
[0070] x’ is from 1.4 to 3.
[0071] More preferably, in formula (I) , G is glucoside. In other words, the alkyl glycoside is selected from alkyl glucosides, wherein the alkyl is a C8-C10 alkyl.
[0072] Examples of alkyl polyglycoside include but are not limited to: caprylyl / capryl glucoside, decyl glucoside, and octyl glucoside.
[0073] Preferably, the non-ionic surfactant is selected from caprylyl / capryl glucoside, octyl glucoside, decyl glucoside, and a combination thereof.
[0074] The preferred alkyl polyglucosides are available under the trade name, for example:
[0075] For decyl glucoside: 2000 UP sold by Cognis,
[0076] For caprylyl / capryl glucoside: OramixTM CG 110 sold by Seppic,
[0077] For octyl glucoside: Rewosan sold by Rewo.
[0078] Advantageously, the non-ionic surfactant is present in the anhydrous composition according to the present invention in an amount ranging from 1 wt. %to 20 wt. %, preferably from 1 wt. %to 10 wt. %, more preferably from 1.5 wt. %to 8 wt. %, and even more preferably from 2 wt. %to 6 wt. %, relative to the total weight of the composition.
[0079] Oils
[0080] The composition according to the invention comprises more than 0.5 wt. %of at least one oil selected from N-acyl amino acid esters, esters of aliphatic polycarboxylic acids and aliphatic alcohols comprising from 1 to 10 carbon atoms, and a combination thereof, relative to the total weight of the composition.
[0081] The term "oil" is understood to mean a water-immiscible non-aqueous compound that is liquid at 25℃ and at atmospheric pressure (1.013×105 Pa) .
[0082] N-acyl amino acid ester
[0083] Preferably, the composition of the present invention comprises at least one N-acyl amino acid ester.
[0084] Preferably, the N-acyl amino acid ester which may be used as an oil according to the present invention is of the formula (II) : R1 (CO) N (R2) CH (R3) (CH2) n (CO) OR4 (II)
[0085] wherein:
[0086] n is an integer equal to 0, 1 or 2,
[0087] R1 represents a C5-C21 linear or branched alkyl or alkenyl,
[0088] R2 represents a hydrogen or a C1-C3 linear or branched alkyl,
[0089] R3 represents a hydrogen, methyl, ethyl, or a C3-C4 linear or branched alkyl,
[0090] R4 represents a C1-C10 linear or branched alkyl or a C2-C10 linear or branched alkenyl, or a sterol residue.
[0091] Preferably, the group R1 (CO) -is an acyl group of an acid selected from capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, linoleic acid, linolenic acid, oleic acid, isostearic acid, 2-ethylhexanoic acid, fatty acids of coconut oil, fatty acids from palm kernel oil. These fatty acids may also have a hydroxyl group. Even more preferably, it is lauric acid.
[0092] Preferably, the portion-N (R2) CH (R3) (CH2) n (CO) -of the amino acid ester is selected from the following amino acids: glycine, alanine, valine, leucine, isoleucine, serine, threonine, proline, hydroxyproline, beta-alanine, aminobutyric acid, aminocaproic acid, sarcosine, or N-methyl-beta-alanine. Even more preferably, it is the sarcosine.
[0093] Preferably, the amino acid esters corresponding to the group OR4 is obtained from alcohols selected from methanol, ethanol, propanol, isopropanol, butanol, tert-butanol, isobutanol, 3-methyl-1-butanol, 2-methyl-1-butanol, fusel oil, pentanol, hexanol, cyclohexanol, octanol, 2-ethylhexanol, decanol, lauryl alcohol, myristyl alcohol, cetyl alcohol, cetostearyl alcohol, stearyl alcohol, oleyl alcohol, behenyl alcohol, jojoba alcohol, 2-hexadecyl alcohol, 2-octyldodecanol alcohol and isostearyl alcohol.
[0094] The N-acyl amino acid esters are preferably obtained from natural sources of amino acids. In this case, amino acids derived from hydrolysis of natural vegetable proteins (oat, wheat, soybean, palm, coconut) and then necessarily lead to amino acid mixtures, which should then be esterified and N-acylated. The preparation of such amino acids is more preferably described in the patent application FR 2 796 550, which is incorporated herein by reference.
[0095] The most preferred N-acyl amino acid ester is isopropyl N-lauroyl sarcosinate (as shown by Formula (III) ) , such as the product sold under the name ELDEW SL-205 by the company Ajinomoto.
[0096] The N-acyl amino acid esters preferably used for this invention and their synthesis are described in Patent Applications EP 1044676 and EP 0928608 by Ajinomoto CO.
[0097] Esters of aliphatic polycarboxylic acids and aliphatic alcohols comprising from 1 to 10 carbon atoms
[0098] Preferably, the composition of the present invention comprises at least one ester of aliphatic polycarboxylic acid and aliphatic alcohol comprising from 1 to 10 carbon atoms.
[0099] As the esters of aliphatic polycarboxylic acids and aliphatic alcohols comprising from 1 to 10 carbon atoms, mention may be made especially of esters of C2-C26 aliphatic polyacids and of C1-C10 aliphatic mono-or polyalcohols, the total carbon number of the esters being greater than or equal to 6, preferably greater than or equal to 10.
[0100] Still within the context of this variant, esters of C4-C22 aliphatic dicarboxylic or tricarboxylic acids and C2-C6 aliphatic mono-or dihydroxy alcohols may also be used.
[0101] More preferably, esters of aliphatic polycarboxylic acids and aliphatic alcohols comprising from 1 to 10 carbon atoms is selected from diethyl sebacate; diisopropyl sebacate; diisopropyl adipate; di-n-propyl adipate; dioctyl adipate; diisostearyl adipate; dioctyl maleate; triisopropyl citrate; triisostearyl citrate; trioctyldodecyl citrate; trioleyl citrate, and mixtures thereof.
[0102] Advantageously, the oil is present in the anhydrous composition according to the present invention in an amount ranging from 1 wt. %to 20 wt. %, preferably from 1 wt. %to 10 wt. %, more preferably from 2 wt. %to 8 wt. %, and even more preferably from 3 wt. %to 6 wt. %, relative to the total weight of the composition.
[0103] C2-C6 polyols
[0104] The anhydrous composition according to the present invention comprises at least one C2-C6 polyol.
[0105] The term “polyol” here means an alcohol having two or more hydroxy groups.
[0106] The polyol may be a natural or synthetic polyol. The polyol may have a linear, branched or cyclic molecular structure.
[0107] The C2-C6polyol may be selected from glycerin and derivatives thereof, and glycols and derivatives thereof. The polyol may be selected from glycerin, diglycerin, ethylene glycol, diethylene glycol, propylene glycol, dipropylene glycol, butylene glycol, pentylene glycol, hexylene glycol, and a combination thereof.
[0108] In the present invention, the definition of polyol includes all possible isomer. For example, propylene glycol includes 1, 3-propylene glycol, 1, 2-propylene glycol and 1, 1-propylene glycol; butylene glycol includes 1, 4-butylene glycol, 1, 3-butylene glycol, 1, 2-butylene glycol, etc.
[0109] Preferably, the anhydrous composition containing at least one C2-C6 polyol selected from dipropylene glycol, glycerin, propanediol, and a combination thereof.
[0110] Preferably, the C2-C6 polyol is present in the anhydrous composition according to the present invention in an amount ranging from 40 wt. %to 98 wt. %, preferably from 60 wt. %to 96 wt. %, and more preferably from 80 wt. %to 94 wt. %, relative to the total weight of the composition.
[0111] Preferably, the anhydrous composition of the present invention comprises from 1 wt. %to 30 wt. %, preferably from 3 wt. %to 20 wt. %, more preferably from 5 wt. %to 15 wt. %of glycerin, relative to the total weight of the composition.
[0112] Preferably, the anhydrous composition of the present invention comprises from 2 wt. %to 60 wt. %, preferably from 6 wt. %to 40 wt. %, more preferably from 10 wt. %to 30 wt. %of propanediol, relative to the total weight of the composition.
[0113] Preferably, the anhydrous composition of the present invention comprises from 10 wt. %to 80 wt. %, preferably from 20 wt. %to 70 wt. %, more preferably from 30 wt. %to 60 wt. %of dipropylene glycol, relative to the total weight of the composition.
[0114] More preferably, the anhydrous composition of the present invention comprises from 5 wt. %to 15 wt. %of glycerin, from 10 wt. %to 30 wt. %of propanediol, and from 30 wt. %to 60 wt. %of dipropylene glycol, relative to the total weight of the anhydrous composition.
[0115] Preferably, the present invention provides an anhydrous composition for caring for and / or making up keratin materials comprising, relative to the total weight of the composition:
[0116] a) from 2 wt. %to 6 wt. %of at least one non-ionic surfactant with a HLB value of 11-15 at the temperature of 25℃ selected from polyglyceryl caprylate with a polyglyceryl moiety derived from 2 to 10 glycerol units, polyoxyethylenated (15-40 EO) and polyoxypropylenated (5-30 PO) alkyl (C16-C24) ethers, C8-C10 alkyl polyglucosides, and a combination thereof;
[0117] b) from 3 wt. %to 6 wt. %of at least one oil selected from N-acyl amino acid esters, esters of C4-C22 aliphatic dicarboxylic or tricarboxylic acids and of C2-C6 aliphatic mono-or dihydroxy alcohols, and a combination thereof; and
[0118] c) from 80 wt. %to 94 wt. %of at least one C2-C6 polyol selected from glycerin, propanediol, dipropylene glycol, and a combination thereof.
[0119] Cosmetic active ingredients
[0120] Preferably, the anhydrous composition according to the present invention comprise one or more cosmetic active ingredients sensitive to water and / or oxygen.
[0121] As examples of cosmetic active ingredient sensitive to water and / or oxygen, mention can be made of ferulic acid, enzymes (for example lactoperoxidase, lipase, protease, phospholipase or cellulases) , natural extracts (such as green tea, balm extract, thyme extract, polygonum cuspidatum root extract) , procyanidol oligomers (PCO) (such as hawthorn PCO, pine PCO and grape PCO) , vitamins (preferably vitamin B (for example, vitamin B1, B2, B3, B5, B6, B9, or B12) , ascorbic acid (vitamin C) and its esters or retinol (vitamin A) and its esters) , pantothenic acid, phosphated and glucosylated derivatives, urea and rutin.
[0122] The anhydrous composition according to the present invention may comprise one or more cosmetic active ingredients not sensitive to water and / or oxygen.
[0123] As examples of cosmetic active ingredients not sensitive to water and / or oxygen, mention can be made of glycyrrhetinic acid, phenylethyl resorcinol, capryloyl salicylic acid, etc.
[0124] It is easy for the skilled in the art to adjust the amount of the cosmetic active agents based on the final use of the composition according to the present invention.
[0125] Additional adjuvants or additives
[0126] The composition according to the present invention may also contain conventional cosmetic adjuvants or additives, for instance fragrances, preserving agents and bactericides, opacifiers, dyes, softeners, buffers, electrolytes such as sodium chloride, or a pH regulator (for example citric acid or potassium hydroxide) , and mixtures thereof.
[0127] Needless to say, the skilled in the art will take care to select the optional adjuvant (s) added to the composition according to the present invention such that the advantageous properties intrinsically associated with the composition according to the present invention are not, or are not substantially, adversely affected by the envisaged addition.
[0128] Galenic form and use
[0129] The anhydrous composition according to the present invention can be prepared by convention methods in the cosmetic field.
[0130] The anhydrous composition according to the present invention can be mixed with water or a hydrous composition to obtain a microemulsion.
[0131] Alternatively, the anhydrous composition according to the present invention can be one composition of a dual-chamber or multi-chamber product, wherein the composition according to the present invention is in one chamber, water or a hydrous composition is in the other chamber (s) . Consumers can mix the composition in one chamber with water or the hydrous composition in the other chamber to obtain a microemulsion.
[0132] The "microemulsion" may be defined in two ways, namely, in a broader sense and in a narrower sense. That is to say, there are one case ( "microemulsion in the narrow sense" ) in which the microemulsion refers to a thermodynamically stable isotropic single liquid phase containing a ternary system having three ingredients of an oily component, an aqueous component and a surfactant, and the other case ( "microemulsion in the broad sense" ) in which among thermodynamically unstable typical emulsion systems the microemulsion additionally includes those such emulsions presenting transparent or translucent appearances due to their smaller particle sizes (Satoshi Tomomasa, et al., Oil Chemistry, Vol. 37, No. 11 (1988) , pp. 48-53) . The "microemulsion" as used herein refers to a "microemulsion in the broad sense" .
[0133] Advantageously, in the microemulsion formed with the composition according to the present invention, the droplets have a number-average size of 120 nm or less, preferably from 20 nm to 80 nm, more preferably from 20 nm to 50 nm.
[0134] The volume-average size of the droplets may be determined according to the known method of dynamic light scattering (DLS) . By way of apparatus that can be used for this determination, mention may be made of the particle size analyser of the brand Malvern, model Zetasizer Nano ZS, equipped with a standard laser having a power of 4 mW, and at a wavelength of 633 nm. This device is also equipped with a correlator (25 ns to 8000 s, 4000 channels max. ) .
[0135] The microemulsion obtained by the anhydrous composition with water or a hydrous composition can be used to care for and / or making up keratin materials.
[0136] Thus, according to the second aspect, the present invention provides a non-therapeutic process for caring for and / or making up keratin materials, comprising:
[0137] i) mixing the anhydrous composition according to the present invention with water or a hydrous composition to form a microemulsion; and
[0138] ii) applying the microemulsion to the keratin materials.
[0139] The hydrous composition can comprise 40 wt. %or above of water, for example 45 wt. %to 99.9 wt. %of water, relative to the total weight of the composition.
[0140] Examples
[0141] The following examples serve to illustrate the present invention without, however, being limiting in nature.
[0142] Main raw materials used, trade names and suppliers thereof are listed in Table 1.
[0143] Table 1
[0144] Invention examples 1-3 and comparative examples 1-8
[0145] Compositions of invention examples (IE. ) 1-3 and comparative examples (CE. ) 1-8 were prepared according to the amounts of components given in Table 2. The amount of each component is given in%by weight of the total weight of the composition containing it.
[0146] Table 2
[0147] Compositions of invention examples 1-3 are compositions of the present invention.
[0148] Composition of comparative examples 1-3 do not comprise at least one non-ionic surfactant with a HLB value of 11-15 at the temperature of 25℃ selected from polyglyceryl fatty acid esters, polyoxyethylenated (1-40 EO) and polyoxypropylenated (1-30 PO) alkyl (C16-C30) ethers, alkyl polyglycosides, and a combination thereof.
[0149] Composition of comparative examples 4-6 do not comprise at least one oil selected from N-acyl amino acid esters, esters of aliphatic polycarboxylic acids and aliphatic alcohols comprising from 1 to 10 carbon atoms, and a combination thereof.
[0150] Composition of comparative example 7 does not comprise an oil.
[0151] Composition of comparative example 8 comprises only 0.5 wt. %of an oil, relative to the total weight of the composition.
[0152] Preparation procedure:
[0153] The compositions above were prepared as follows (taking the composition of invention example 1 as example) :
[0154] 1) introducing polyols and cosmetic active ingredients (if presents) with stirring at 200 rpm and then heating to 85℃ to obtain a clear liquid;
[0155] 2) cooling down to 60℃, to obtain a viscous transparent to translucent liquid;
[0156] 3) introducing non-ionic surfactant (if presents) and oil (if presents) , with stirring at 650 rpm till uniform, then cooling down to 30℃ to obtain the composition.
[0157] Evaluation:
[0158] 1. Particle size
[0159] Each composition prepared in invention examples 1-3 and comparative examples 1-8 were mixed with water by gentle mixing, then the particle size of droplets in the obtained mixtures were determined through Brookhaven DLS with scattering angle (°) of 90 and count rate of 355.1 kcps. The following criterion was used to evaluate the stability.
[0160] If particle size (Mean Diamater by Volume) is 120 nm or more, then no microemulsion is formed.
[0161] If particle size (Mean Diamater by Volume) is more than 10 nm and less than 120 nm, then a microemulsion is formed.
[0162] Whether a microemulsion was formed or not is listed in Table 3.
[0163] Table 3
[0164] It can be seen that the compositions according to the present invention can form a microemulsion upon mixed with water, while compositions of comparative examples 1-8 cannot form a microemulsion upon mixed with water.
[0165] 2. Sensation
[0166] 4 skin experts evaluated the sensation of stickiness of the invention examples 1-3 and comparative example 8 during a blind test. To assess the stickiness, the experts touched the skin after applying the test composition on it and scored the degree of stickiness of the skin with a score of "1-5" according to the following standard:
[0167] 1: means not sticky,
[0168] 2: means slight sticky,
[0169] 3: means moderate sticky;
[0170] 4: moderate to highly sticky
[0171] 5: means highly sticky.
[0172] The scores given by 4 experts were averaged and the results were shown in Table 4.
[0173] Table 4
[0174] It can be seen that the compositions according to the present invention exhibit much better results in terms of stickiness than the composition of comparative example 8.
Claims
1.An anhydrous composition for caring for and / or making up keratin material, comprising:a) at least one non-ionic surfactant with a HLB value of 11-15 at the temperature of 25℃ selected from polyglyceryl fatty acid esters, polyoxyethylenated (1-40 EO) and polyoxypropylenated (1-30 PO) alkyl (C16-C30) ethers, alkyl polyglycosides, and a combination thereof;b) more than 0.5 wt. %of at least one oil selected from N-acyl amino acid esters, esters of aliphatic polycarboxylic acids and aliphatic alcohols comprising from 1 to 10 carbon atoms, and a combination thereof, relative to the total weight of the composition; andc) at least one C2-C6 polyol.2.The composition according to claim 1, wherein the composition comprises at least one polyglyceryl fatty acid ester, preferably the polyglyceryl fatty acid ester is selected from mono-, di-and tri-esters of glycerin and a saturated or unsaturated fatty acid including 8 to 12 carbon atoms, more preferably the polyglyceryl fatty acid ester is selected from polyglyceryl caprylate with a polyglyceryl moiety derived from 2 to 10 glycerol units, even more preferably the polyglyceryl fatty acid ester is polyglyceryl-6 caprylate.3.The composition according to claim 1 or 2, wherein the composition comprises at least one polyoxyethylenated (1-40 EO) and polyoxypropylenated (1-30 PO) alkyl (C16-C30) ether, preferably the polyoxyethylenated (1-40 EO) and polyoxypropylenated (1-30 PO) alkyl (C16-C30) ether is selected from polyoxyethylenated (15-40 EO) and polyoxypropylenated (5-30 PO) alkyl (C16-C24) ethers, more preferably selected from PPG-6 Decyltetradeceth-30, PPG-13 Decyltetradeceth-24, PPG-5 Ceteth-20, PPG-8 Ceteth-20, and a combination thereof.4.The composition according to any of claims 1-3, wherein the composition comprises at least one alkyl polyglycoside, preferably the alkyl polyglycoside is selected from those of formula (I) : R-O-Gx’ (I)whereinR is a C6-C12 alkyl group,G is a moiety derived from a reducing saccharide containing from 5 to 6 carbon atoms, preferably a glucose unit, andx’ represents the average degree of polymerisation of the alkyl polyglycoside from 1 to 10,preferably, in formula (I) :R is a C8-C10 alkyl group,G is selected from galactoside, glucoside, lactoside, fructoside, glucosyl, fructosyl, lactosyl, and galactosyl units,x’ is from 1.4 to 3.5.The composition according to claim 4, wherein the alkyl polyglycoside is selected from caprylyl / capryl glucoside, octyl glucoside, decyl glucoside, and a combination thereof.6.The composition according to any of claims 1-5, wherein the non-ionic surfactant is present in an amount ranging from 1 wt. %to 20 wt. %, preferably from 1 wt. %to 10 wt. %, more preferably from 1.5 wt. %to 8 wt. %, and even more preferably from 2 wt. %to 6 wt. %, relative to the total weight of the composition.7.The composition according to any of claims 1-6, wherein the composition comprises at least one N-acyl amino acid ester, preferably the N-acyl amino acid ester is selected from those of the formula (II) : R1(CO) N (R2) CH (R3) (CH2) n (CO) OR4 (II)wherein:n is an integer equal to 0, 1 or 2,R1 represents a C5-C21 linear or branched alkyl or alkenyl,R2 represents a hydrogen or a C1-C3 linear or branched alkyl,R3 represents a hydrogen, methyl, ethyl, or a C3-C4 linear or branched alkyl,R4 represents a C1-C10 linear or branched alkyl or a C2-C10 linear or branched alkenyl, or a sterol residue.8.The composition according to any of claims 1-7, wherein the composition comprises at least one ester of aliphatic polycarboxylic acid and aliphatic alcohol comprising from 1 to 10 carbon atoms, preferably the ester of aliphatic polycarboxylic acids and aliphatic alcohols comprising from 1 to 10 carbon atoms is selected from esters of C4-C22 aliphatic dicarboxylic or tricarboxylic acids and of C2-C6 aliphatic mono-or dihydroxy alcohols, more preferably selected from diethyl sebacate; diisopropyl sebacate; diisopropyl adipate; di-n-propyl adipate; dioctyl adipate; diisostearyl adipate; dioctyl maleate; triisopropyl citrate; triisostearyl citrate; trioctyldodecyl citrate; trioleyl citrate, and mixtures thereof.9.The composition according to any of claims 1-8, wherein the oil is present in an amount ranging from 1 wt. %to 20 wt. %, preferably from 1 wt. %to 10 wt. %, more preferably from 2 wt. %to 8 wt. %, and even more preferably from 3 wt. %to 6 wt. %, relative to the total weight of the composition.10.The composition according to any of claims 1-9, wherein the C2-C6 polyol is selected from glycerin, diglycerin, ethylene glycol, diethylene glycol, propylene glycol, dipropylene glycol, butylene glycol, pentylene glycol, hexylene glycol, and a combination thereof, preferably from glycerin, propanediol, dipropylene glycol, and a combination thereof.11.The composition according to any of claims 1-10, wherein the C2-C6 polyol is present in an amount ranging from 40 wt. %to 98 wt. %, preferably from 60 wt. %to 96 wt. %, and more preferably from 80 wt. %to 94 wt. %, relative to the total weight of the composition.12.Composition according to claim 1, comprising, relative to the total weight of the composition:a) from 2 wt. %to 6 wt. %of at least one non-ionic surfactant selected from polyglyceryl caprylate with a polyglyceryl moiety derived from 2 to 10 glycerol units, polyoxyethylenated (15-40 EO) and polyoxypropylenated (5-30 PO) alkyl (C16-C24) ethers, C8-C10 alkyl polyglucosides, and a combination thereof;b) from 3 wt. %to 6 wt. %of at least one oil selected from N-acyl amino acid esters, esters of C4-C22 aliphatic dicarboxylic or tricarboxylic acids and of C2-C6 aliphatic mono-or dihydroxy alcohols, and a combination thereof, andc) from 80 wt. %to 94 wt. %of at least one C2-C6 polyol selected from glycerin, propanediol, dipropylene glycol, and a combination thereof.13.A non-therapeutic process for caring for and / or making up keratin materials, comprising:i) mixing the anhydrous composition according to any of claims 1-12 and water or a hydrous composition to form a microemulsion; andii) applying the microemulsion to the keratin materials.14.The process of claim 13, wherein the hydrous composition comprises 40 wt. %or more of water, relative to the total weight of the composition.
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