Method for conditioning hair

By using a combination of a water-soluble penetration enhancer, a nonionic surfactant, and a specific carboxylic acid or its salt, the problem of a heavy coating caused by hair conditioning products is solved, achieving a lasting lift of natural curl and high top volume.

CN122094652APending Publication Date: 2026-05-26LOREAL SA
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
LOREAL SA
Filing Date
2023-10-31
Publication Date
2026-05-26

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Abstract

A method for conditioning hair comprising applying to the hair a composition comprising: a) at least one water soluble penetration enhancer selected from the group consisting of C2-C8 monoalcohols; b) a nonionic surfactant; and c) at least one carboxylic acid of formula (I) and / or a salt thereof: R1-N-(CH (R2) COOH) 2 (I) wherein:-R1 represents a hydrogen atom or a group-CH (COOH)-(CH2) 2-COOH,-CH2CH2OH,-CH (CH3) COOH,-(CH2) 2N (COR3)-CH2-COOH or-CH (COOH)-CH2-COOH; and when R1 represents a hydrogen atom, R2 represents a CH2COOH group, or when R1 is a group other than a hydrogen atom, R2 represents a hydrogen atom; and-R3 represents a linear or branched alkyl group comprising 1 to 4 carbon atoms or a cycloalkyl group comprising 3 to 30 carbon atoms.
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Description

Technical Field

[0001] This invention belongs to the field of cosmetics. In particular, this invention relates to a method for conditioning hair. Background Technology

[0002] Consumers want an airy look, which refers to a high crown volume appearance and naturally curly hair. Typically, a lasting root lift is key to achieving high crown volume.

[0003] Currently, there are some solutions in this field that use shaped polymers such as vinylpyrrolidone / vinyl acetate copolymer and / or carbomer to achieve root lifting.

[0004] Some products on the market result in a thick coating that causes hair fibers to stick together and become dirty easily.

[0005] Therefore, it is desirable to have a solution that effectively treats hair, which, when applied to the scalp and hair roots, can provide good hair root lifting benefits. Summary of the Invention

[0006] Therefore, one object of the present invention is to develop a method for conditioning hair that can result in good hair root lifting.

[0007] Therefore, according to a first aspect, the present invention provides a method for conditioning hair, comprising applying a composition comprising: a) At least one water-soluble penetration enhancer selected from C2-C8 monohydric alcohols; b) at least one nonionic surfactant; and c) At least one carboxylic acid of formula (I) and / or its salt: R1-N-(CH(R2)COOH)2(I) in: -R1 represents a hydrogen atom or the -CH(COOH)-(CH2)2-COOH, -CH2CH2OH, -CH(CH3)COOH, -(CH2)2N(COR3)-CH2-COOH, or -CH(COOH)-CH2-COOH group; and - When R1 represents a hydrogen atom, R2 represents a CH2COOH group; or when R1 is a group other than a hydrogen atom, R2 represents a hydrogen atom; and -R3 indicates a straight-chain or branched alkyl group containing 1 to 4 carbon atoms or a cycloalkyl group containing 3 to 30 carbon atoms.

[0008] The inventors have discovered that the method according to the invention can effectively result in a good hair root lift.

[0009] Other subjects, features, aspects, and advantages of the invention will become even clearer after reading the following detailed description and examples. Detailed Implementation

[0010] As used herein, unless otherwise stated, the limits of a numerical range are included within that range, particularly in expressions “between… and…” and “from… to…”.

[0011] As used herein, the term “comprising / including / containing” is interpreted as encompassing all specifically mentioned features as well as optional, additional, unspecified features.

[0012] As used herein, the use of the term “comprising / including / containing” also discloses an implementation in which no features other than those specifically mentioned (i.e., “composed of”) are present.

[0013] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. Where a definition of a term in this specification conflicts with the meaning commonly understood by one of ordinary skill in the art to which this invention pertains, the definition set forth herein shall prevail.

[0014] Unless otherwise stated, all numerical values ​​used in the specification and claims to represent component quantities, etc., should be understood to be modified by the term "about". Therefore, unless indicated otherwise, the numerical values ​​and parameters described herein are approximate values ​​that can be changed as needed to obtain the desired performance.

[0015] As used herein, the expression "at least one / kind" is equivalent to the expression "one / kind or more / kinds".

[0016] According to a first aspect, the composition used in the method of the present invention comprises: a) At least one water-soluble penetration enhancer selected from C2-C8 monohydric alcohols; b) at least one nonionic surfactant; and c) At least one carboxylic acid of formula (I) as defined above and / or a salt thereof.

[0017] Penetration enhancer According to a first aspect, the composition according to the invention comprises at least one water-soluble penetration enhancer selected from C2-C8 monohydric alcohols.

[0018] Preferably, the penetration enhancer is selected from C2-C6 monohydric alcohols.

[0019] Suitable penetration enhancers for use in the compositions according to the invention include, but are not limited to, ethanol, n-propanol, isopropanol, n-butanol, tert-butanol, and pentanol.

[0020] More preferably, the penetration enhancer is ethanol.

[0021] Advantageously, the penetration enhancer is present in the composition in an amount ranging from 1% to 50% by weight, preferably from 5% to 45% by weight, and more preferably from 10% to 40% by weight, relative to the total weight of the composition used in the method of the present invention.

[0022] Nonionic surfactants The composition used in the method of the present invention comprises at least one nonionic surfactant.

[0023] Exemplary nonionic surfactants include, but are not limited to: (1) A polyoxyethylene condensate of alkylphenols, for example, a condensation product of alkylphenols and ethylene oxide having an alkyl group having a straight or branched configuration comprising about 6 to about 20 carbon atoms, wherein the ethylene oxide is present in an amount equal to about 10 to about 60 moles of ethylene oxide per mole of alkylphenol. (2) Those derived from the condensation of ethylene oxide with products obtained from the reaction of propylene oxide and ethylenediamine; (3) A condensation product of an aliphatic alcohol having a straight-chain or branched configuration of about 8 to about 18 carbon atoms with ethylene oxide, for example, a coconut oil alcohol ethylene oxide condensate having about 10 to about 30 moles of ethylene oxide per mole of coconut oil alcohol, wherein the coconut oil alcohol moiety has about 10 to about 14 carbon atoms. (4) Equation [R] 1 R 2 R 3 Long-chain tertiary amine oxides of N→O, wherein R 1 It comprises an alkyl, alkenyl, or monohydroxyalkyl group having about 8 to about 18 carbon atoms, 0 to about 10 ethylene oxide moieties, and 0 to about 1 glycerol moieties, and R 2 and R 3 Each of them independently contains about 1 to about 3 carbon atoms and 0 to about 1 hydroxyl group, such as methyl, ethyl, propyl, hydroxyethyl or hydroxypropyl; (5) A long-chain tertiary phosphine oxide of formula [RR'R"P→O], wherein R comprises an alkyl, alkenyl or monohydroxyalkyl group with a chain length ranging from about 8 to about 18 carbon atoms, 0 to about 10 ethylene oxide moieties and 0 to 1 glyceryl moieties, and R' and R" are each independently an alkyl or monohydroxyalkyl group containing about 1 to about 3 carbon atoms. (6) A long-chain dialkyl sulfoxide comprising a short-chain alkyl or hydroxyalkyl (usually methyl) having 1 to 3 carbon atoms and a long hydrophobic chain comprising an alkyl, alkenyl, hydroxyalkyl or ketylalkyl having about 8 to 20 carbon atoms, 0 to 10 ethylene oxide moieties and 0 to 1 glyceryl moieties. (7) Alkyl polysaccharide (APS) surfactants (e.g., alkyl polyglucosides) comprising an APS surfactant having a hydrophobic group having about 6 to about 30 carbon atoms and a hydrophilic group being a polysaccharide (e.g., a polyglucoside); optionally, a polyepoxyalkyl group connecting the hydrophobic and hydrophilic portions may be present; and the alkyl group (i.e., the hydrophobic portion) may be saturated or unsaturated, branched or unbranched, and unsubstituted or substituted (e.g., substituted with hydroxyl or cyclic rings); preferred materials are alkyl polyglucosides, which are commercially available from Henkel, ICI Americas, and Seppic; and (8) Polyoxyethylene alkyl ethers, such as RO(CH2CH2O) n Those containing H and polyethylene glycol (PEG) glycerol fatty esters, such as R(O)OCH2CH(OH)CH2(OCH2CH2) n Those with OH, wherein n is from 1 to about 200, preferably from about 20 to about 100, and R is an alkyl group having about 8 to about 22 carbon atoms.

[0024] Polyethylene glycol derivatives of glycerides that can be used in this document (8) include derivatives of monoglycerides, diglycerides and triglycerides, and mixtures thereof.

[0025] Preferably, the nonionic surfactant is selected from those of the following general formula (II): (II) in: n represents the degree of ethoxylation, which is about 4 to about 200, preferably about 5 to about 150, more preferably about 20 to about 120, and R contains an aliphatic group having about 5 to about 25 carbon atoms, preferably about 7 to about 20 carbon atoms.

[0026] Suitable polyethylene glycol derivatives of glycerides can be polyethylene glycol derivatives of hydrogenated castor oil.

[0027] More preferably, the nonionic surfactant is selected from PEG-20 hydrogenated castor oil, PEG-30 hydrogenated castor oil, PEG-40 hydrogenated castor oil, PEG-45 hydrogenated castor oil, PEG-50 hydrogenated castor oil, PEG-54 hydrogenated castor oil, PEG-55 hydrogenated castor oil, PEG-60 hydrogenated castor oil, PEG-80 hydrogenated castor oil, PEG-100 hydrogenated castor oil, and mixtures thereof.

[0028] Advantageously, the nonionic surfactant is present in the composition in an amount ranging from 0.01% to 10% by weight, preferably from 0.02% to 5% by weight, more preferably from 0.03% to 3% by weight, and more preferably from 0.05% to 1.5% by weight, relative to the total weight of the composition used in the method of the present invention.

[0029] Carboxylic acids of formula (I) and / or their salts The composition used in the method of the present invention comprises at least one carboxylic acid of formula (I) and / or a salt thereof: R1-N-(CH(R2)COOH)2(I) in: -R1 represents a hydrogen atom or the -CH(COOH)-(CH2)2-COOH, -CH2CH2OH, -CH(CH3)COOH, -(CH2)2N(COR3)-CH2-COOH, or -CH(COOH)-CH2-COOH group; and - When R1 represents a hydrogen atom, R2 represents a CH2COOH group; or when R1 is a group other than a hydrogen atom, R2 represents a hydrogen atom; and -R3 indicates a straight-chain or branched alkyl group containing 1 to 4 carbon atoms or a cycloalkyl group containing 3 to 30 carbon atoms.

[0030] More specifically, the carboxylic acid in formula (I) corresponds to: -A compound containing four carboxylic acid functional groups when R1 represents a hydrogen atom and R2 represents a -CH2-COOH group, or when R1 represents a -CH(COOH)-(CH2)2-COOH group and R2 represents a hydrogen atom, or when R1 represents a -CH(COOH)-CH2-COOH group and R2 represents a hydrogen atom; - When R1 represents a CH(CH3)-COOH group and R2 represents a hydrogen atom, or when R1 represents a -(CH2)2-N(COR3)-CH2-COOH group and R2 represents a hydrogen atom, a compound containing three carboxylic acid functional groups; and - When R1 represents the -CH2CH2OH group and R2 represents a hydrogen atom, it is a compound containing two carboxylic acid functional groups.

[0031] The carboxylic acid of formula (I) can take the form of a pure enantiomer, preferably the L configuration, or a mixture, especially a racemic mixture.

[0032] The salts of the carboxylic acid of formula (I) are preferably selected from alkali metal salts, alkaline earth metal salts, transition metal salts, organic amine salts, ammonium salts and mixtures thereof.

[0033] Examples of alkali metal salts include, in particular, sodium (Na). + ) and potassium (K+ Salts, and examples of alkaline earth metal salts particularly include calcium (Ca). 2+ ) and magnesium (Mg 2+ )Salt.

[0034] For the purposes of this invention, "transition metal" refers to a metal containing an incomplete d-sublayer, and more particularly to the II oxidation state, such as cobalt (Co). 2+ ), iron (Fe) 2+ ), manganese (Mn 2+ ), Zinc (Zn) 2+ ) and copper (Cu 2+ ).

[0035] Regarding organic amine salts, salts of primary, secondary, or tertiary amines may be mentioned, or alternatively, salts of alkanolamines. The amines exhibit one or more identical or dissimilar straight-chain or branched C1 to C2 chains. 20 Alkyl groups, which optionally contain heteroatoms such as oxygen.

[0036] Preferably, the carboxylic acid and / or its salt of formula (I) in the composition used in the method of the present invention is selected from methylglycine diacetic acid, N-lauroyl ethylenediamine-N,N',N'-triacetic acid, N,N-dicarboxymethyl glutamic acid, iminodisuccinic acid, N,N-bis(carboxymethyl)aspartic acid, its alkali metal salt, its alkaline earth metal salt, its transition metal salt, its organic amine salt, its ammonium salt, its optical isomer, its geometric isomer, its solvate, and mixtures thereof, and more preferably selected from N,N-dicarboxymethyl glutamic acid, N,N-bis(carboxymethyl)aspartic acid, its alkali metal salt, its alkaline earth metal salt, its transition metal salt, its organic amine salt, its ammonium salt, its optical isomer, its geometric isomer, its solvate, and mixtures thereof.

[0037] Even better, the carboxylic acid and / or its salts of formula (I) are selected from N,N-dicarboxymethyl-L-glutamic acid (GLDA), N,N-bis(carboxymethyl)-L-aspartic acid, their alkali metal salts, their alkaline earth metal salts, their transition metal salts, their organic amine salts, their ammonium salts, their solvates, and mixtures thereof.

[0038] Preferably, the carboxylic acid of formula (I) and / or its salts used according to the present invention are selected from N,N-dicarboxymethyl-L-glutamic acid (GLDA), tetrasodium N,N-bis(carboxymethyl)-L-glutamic acid (tetrasodium glutamate diacetate), and mixtures thereof.

[0039] Advantageously, the carboxylic acid and / or its salt of formula (I) are present in the composition in an amount ranging from 0.01% to 20% by weight, preferably from 0.02% to 10% by weight, and preferably from 0.03% to 5% by weight, relative to the total weight of the composition used in the method of the present invention.

[0040] Cellulose-based polymers The composition used in the method of the present invention preferably comprises at least one cellulose-based polymer.

[0041] As used herein, the term "cellulose-based" polymer is intended to refer to any polysaccharide compound having a sequence of glucose residues linked together via β-1,4 bonds in its structure; cellulose derivatives, other than unsubstituted cellulose, can be anionic, cationic, amphoteric, or nonionic.

[0042] Preferably, the cellulose-based polymer used according to the present invention is selected from unsubstituted cellulose (including those in microcrystalline form), cellulose esters, cellulose ethers, cellulose ester ethers, and mixtures thereof.

[0043] Cellulose esters include inorganic esters of cellulose (nitrocellulose, cellulose sulfate, cellulose phosphate, etc.), organic cellulose esters (cellulose monoacetate, cellulose triacetate, cellulose amide propionate, cellulose acetate butyrate, cellulose acetate propionate, and cellulose acetate trimellitate, etc.), and mixed organic / inorganic esters of cellulose, such as cellulose acetate butyrate sulfate and cellulose acetate propionate sulfate.

[0044] Cellulose ethers include nonionic cellulose ethers, anionic cellulose ethers, and cationic cellulose ethers.

[0045] In nonionic cellulose ethers, (C1-C4)alkyl celluloses may be mentioned, such as methylcellulose and ethylcellulose (e.g., Ethocel standard 100 Premium from Dow Chemical); (poly)hydroxy (C1-C4)alkyl celluloses, such as hydroxymethylcellulose, hydroxyethylcellulose (e.g., Natrosol 250 HHR from Ashland), and hydroxypropylcellulose (e.g., Klucel EF from Aqualon); and mixed (poly)hydroxy (C1-C4)alkyl (C1-C4)alkyl celluloses, such as hydroxypropyl methylcellulose (e.g., Methocel E4M from Dow Chemical), hydroxyethyl methylcellulose, hydroxyethyl ethylcellulose (e.g., Bermocoll 20 E 481 FQ from Akzo Nobel), and hydroxybutyl methylcellulose.

[0046] In anionic cellulose ethers, (poly)carboxyl (C1-C4) alkyl cellulose and its salts may be mentioned. For example, carboxymethyl cellulose, carboxymethyl methyl cellulose (e.g., Blanose 7M from Aqualon), and carboxymethyl hydroxyethyl cellulose and their sodium salts may be mentioned.

[0047] In cationic cellulose ethers, reference may be made to cationic cellulose derivatives, such as cellulose copolymers or cellulose derivatives grafted with water-soluble quaternary ammonium monomers, and these are particularly described in patent US 4,131,576, such as (poly)hydroxy (C1-C4)alkyl cellulose, such as hydroxymethyl cellulose, hydroxyethyl cellulose, or hydroxypropyl cellulose grafted particularly with methacryloyl ethyltrimethylammonium, methacrylamidopropyltrimethylammonium, or dimethyl diallyl ammonium salts.

[0048] Among cellulose ester ethers, hydroxypropyl methylcellulose phthalate and ethyl cellulose sulfate may be mentioned.

[0049] More preferably, the cellulose-based polymer is selected from nonionic cellulose ethers.

[0050] Even more preferably, the cellulose-based polymer is selected from (poly)hydroxy (C1-C4)alkyl cellulose, mixed (poly)hydroxy (C1-C4)alkyl (C1-C4)alkyl cellulose, and mixtures thereof.

[0051] Most preferably, the cellulose-based polymer is selected from hydroxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose; hydroxypropyl methyl cellulose, hydroxyethyl methyl cellulose, hydroxyethyl ethyl cellulose, hydroxybutyl methyl cellulose, and mixtures thereof.

[0052] Advantageously, the cellulose-based polymer is present in the composition in an amount ranging from 0.01% to 10% by weight, preferably from 0.02% to 5% by weight, more preferably from 0.02% to 3% by weight, more preferably from 0.03% to 1.5% by weight, and more preferably from 0.03% to 0.5% by weight, relative to the total weight of the composition used in the method of the present invention.

[0053] Aqueous phase The composition used in the method of the present invention may further comprise a continuous aqueous phase.

[0054] The aqueous phase contains water.

[0055] Water is preferably present in the composition in an amount ranging from 50% to 99% by weight, preferably from 60% to 90% by weight, relative to the total weight of the composition used in the method of the present invention.

[0056] Cosmetic active ingredients Optionally, the composition used in the methods of the present invention comprises one or more additional active ingredients for conditioning hair and / or caring for the scalp.

[0057] Those skilled in the art can select the amount of additional active ingredients according to the desired purpose.

[0058] adjuvants The composition used in the method according to the invention may also contain additional adjuvants, such as fragrances, pH adjusters, preservatives, etc.

[0059] Those skilled in the art can choose the amount of additional adjuvants so as not to negatively affect the final use of the composition according to the invention.

[0060] According to a preferred embodiment, the composition comprises, relative to the total weight of the composition used in the method of the present invention: a) 10% to 40% by weight of ethanol; b) 0.05% to 1.5% by weight of at least one nonionic surfactant selected from PEG-20 hydrogenated castor oil, PEG-30 hydrogenated castor oil, PEG-40 hydrogenated castor oil, PEG-45 hydrogenated castor oil, PEG-50 hydrogenated castor oil, PEG-54 hydrogenated castor oil, PEG-55 hydrogenated castor oil, PEG-60 hydrogenated castor oil, PEG-80 hydrogenated castor oil, PEG-100 hydrogenated castor oil, and mixtures thereof; and c) 0.03% to 5% by weight of at least one carboxylic acid of formula (I) and / or a salt thereof, selected from N,N-dicarboxymethyl-L-glutamic acid (GLDA), tetrasodium N,N-bis(carboxymethyl)-L-glutamic acid, and mixtures thereof.

[0061] Preparation and Uses The composition used in the method according to the invention can be prepared by mixing components a) to c), which are essential components, and other components as described above.

[0062] By using the composition, the method according to the invention can effectively result in a good hair root lift. Example

[0063] The following embodiments are given as non-limiting examples of the present invention.

[0064] The main raw materials used, their product names, and their suppliers are listed in Table 1.

[0065] Table 1 Invention Examples 1-3 and Comparative Examples 1-4 The compositions of Examples (IE.) 1-3 and Comparative Examples (CE.) 1-4 were prepared using the components listed in Table 2 (unless otherwise stated, the content is expressed as a weight percentage based on the total weight of each composition): Table 2 The compositions of Examples 1-3 are compositions used in the method according to the present invention.

[0066] The composition of Comparative Example 1 does not contain at least one carboxylic acid of formula (I) and / or its salt.

[0067] The composition of Comparative Example 2 does not contain at least one water-soluble penetration enhancer selected from C2-C8 monohydric alcohols.

[0068] The composition of Comparative Example 3 does not contain at least one nonionic surfactant.

[0069] The composition of Comparative Example 4 contains propylene glycol instead of at least one water-soluble penetration enhancer selected from C2-C8 monohydric alcohols.

[0070] Preparation procedure: Taking the composition of Example 1 as an example, each composition is prepared as follows: 1) Add water to the main container. 2) Add hydroxyethyl cellulose while stirring until the hydroxyethyl cellulose powder is fully wetted and dispersed; 3) Add tetrasodium glutamate diacetate and PEG-60 hydrogenated castor oil while stirring until fully dissolved; 4) Add ethanol while stirring to obtain a homogeneous composition; and 5) Adjust the pH with citric acid.

[0071] Evaluate The sustained root improvement resulting from the compositions of Examples 1-3 and Comparative Examples 1-4 was evaluated through in vitro sample testing and / or double-blind studies.

[0072] In vitro sample testing A 1g sample of natural hair was secured to a support by clamps, upside down from the root. 0.45g of the composition to be tested was applied to the fiber 3 cm from the root.

[0073] Hair feel experts rate sustained root lifting from 1 to 5 based on the following criteria: 5: Lift the hair roots, flip it down at least 2.5 cm away from the clip, and it can be kept for 8 hours.

[0074] 4: Lift the hair roots, flip it down at least 2.5 cm away from the clip, and keep it in place for 4 hours.

[0075] 3: Lift the hair at the roots and flip it down at least 2.5 cm away from the clip. Do not leave it in place for 4 hours.

[0076] 2: Lift the hair at the roots and flip it down within 2 cm of the clip; 1: Lift the hair at the roots and flip it down 1.5 cm from the fixing clip.

[0077] The scores for the sustained root improvement resulting from the compositions of Invention Examples 1-3 and Comparative Examples 1-4 are summarized in Table 3.

[0078] Table 3 Double-blind study In a single-center, randomized, and double-blind study, the scores for the root-lifting benefits derived from the composition of Invention Example 1 were given by dermatologists as follows.

[0079] Part the hair in the middle and give a score based on the angle -α between the two parts.

[0080] Rating 1 point: 180 ≥ α > 165 Score 2: 165 ≥ α > 150 Rating: 3 points: 150 ≥ α > 135 Rating: 4 points: 135 ≥ α > 120 Rating: 5 points: 120 ≥ α > 105 Rating: 6 points: 105 ≥ α > 90 Rating 7 points: 90 ≥ α > 75 Rating: 8 points: 75 ≥ α > 60 Rating: 9 points: 60 ≥ α > 45 Scores were given immediately after the first application (Timm), after application at 6 weeks (Tw6), and after application at 8 weeks (Tw8) (3 times per week). The baseline was the result before application of the composition of Example 1 of the Invention.

[0081] "Root improvement change from baseline" is calculated using the average score difference between time points (Timm, Tw6, Tw8) and the baseline (T0).

[0082] The significant improvement in root elevation resulting from the composition of Example 1 is summarized in Table 4.

[0083] Table 4 As can be seen from Tables 3 and 4, the method of using the composition of the present invention results in a good improvement in hair root lifting.

Claims

1. A method for conditioning hair, the method comprising applying a composition comprising: a) At least one water-soluble penetration enhancer selected from C2-C8 monohydric alcohols; b) at least one nonionic surfactant; and c) At least one carboxylic acid of formula (I) and / or its salt: R1-N-(CH(R2)COOH)2 (I) in: -R1 represents a hydrogen atom or the -CH(COOH)-(CH2)2-COOH, -CH2CH2OH, -CH(CH3)COOH, -(CH2)2N(COR3)-CH2-COOH, or -CH(COOH)-CH2-COOH group; and - When R1 represents a hydrogen atom, R2 represents a CH2COOH group; or when R1 is a group other than a hydrogen atom, R2 represents a hydrogen atom; and -R3 indicates a straight-chain or branched alkyl group containing 1 to 4 carbon atoms or a cycloalkyl group containing 3 to 30 carbon atoms.

2. The method according to claim 1, wherein the penetration enhancer is selected from C2-C6 monohydric alcohols, preferably, the penetration enhancer is ethanol.

3. The method according to claim 1 or 2, wherein the penetration enhancer is present in an amount ranging from 1% to 50% by weight, preferably from 5% to 45% by weight, and more preferably from 10% to 40% by weight, relative to the total weight of the composition.

4. The method according to any one of claims 1-3, wherein the nonionic surfactant is selected from those of general formula (II): (II) in: n represents the degree of ethoxylation, which is about 4 to about 200, preferably about 5 to about 150, more preferably about 20 to about 120, and R contains an aliphatic group having about 5 to about 25 carbon atoms, preferably about 7 to about 20 carbon atoms. Preferably, the nonionic surfactant is selected from PEG-20 hydrogenated castor oil, PEG-30 hydrogenated castor oil, PEG-40 hydrogenated castor oil, PEG-45 hydrogenated castor oil, PEG-50 hydrogenated castor oil, PEG-54 hydrogenated castor oil, PEG-55 hydrogenated castor oil, PEG-60 hydrogenated castor oil, PEG-80 hydrogenated castor oil, PEG-100 hydrogenated castor oil, and mixtures thereof.

5. The method according to any one of claims 1-4, wherein the nonionic surfactant is present in an amount ranging from 0.01% to 10% by weight, preferably from 0.02% to 5% by weight, more preferably from 0.03% to 3% by weight, and more preferably from 0.05% to 1.5% by weight, relative to the total weight of the composition.

6. The method according to any one of claims 1-5, wherein the carboxylic acid and / or its salt of formula (I) is selected from methylglycine diacetic acid, N-lauroyl ethylenediamine-N,N',N'-triacetic acid, N,N-dicarboxymethyl glutamic acid, iminodisuccinic acid, N,N-bis(carboxymethyl)aspartic acid, its alkali metal salt, its alkaline earth metal salt, its transition metal salt, its organic amine salt, its ammonium salt, its optical isomer, its geometric isomer, its solvate, and mixtures thereof, and preferably selected from N,N-dicarboxymethyl glutamic acid, N,N-bis(carboxymethyl)aspartic acid, its alkali metal salt, its alkaline earth metal salt, its transition metal salt, its organic amine salt, its ammonium salt, its optical isomer, its geometric isomer, its solvate, and mixtures thereof, more preferably selected from N,N-dicarboxymethyl-L-glutamic acid, N,N-bis(carboxymethyl)-L-aspartic acid tetrasodium, and mixtures thereof.

7. The method according to any one of claims 1-6, wherein the carboxylic acid and / or its salt of formula (I) are present in an amount ranging from 0.01% to 20% by weight, preferably from 0.02% to 10% by weight, and preferably from 0.03% to 5% by weight, relative to the total weight of the composition.

8. The method according to any one of claims 1-7, wherein the composition further comprises at least one cellulose-based polymer, preferably selected from unsubstituted cellulose, cellulose esters, cellulose ethers, cellulose ester ethers, and mixtures thereof.

9. The method according to claim 8, wherein the cellulose-based polymer is selected from nonionic cellulose ethers, preferably, the cellulose-based polymer is selected from (poly)hydroxy (C1-C4)alkyl cellulose, mixed (poly)hydroxy (C1-C4)alkyl (C1-C4)alkyl cellulose, and mixtures thereof, more preferably, the cellulose-based polymer is selected from hydroxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose; hydroxypropyl methyl cellulose, hydroxyethyl methyl cellulose, hydroxyethyl ethyl cellulose, hydroxybutyl methyl cellulose, and mixtures thereof.

10. The method according to claim 8 or 9, wherein the cellulose-based polymer is present in an amount ranging from 0.01 wt% to 10 wt%, preferably from 0.02 wt% to 5 wt%, preferably from 0.02 wt% to 3 wt%, preferably from 0.03 wt% to 1.5 wt%, and more preferably from 0.03 wt% to 0.5 wt%, relative to the total weight of the composition.

11. The method according to any one of claims 1-10, wherein the composition further comprises a continuous aqueous phase, wherein the aqueous phase comprises water.

12. The method of claim 11, wherein water is present in an amount ranging from 50% to 99% by weight, preferably from 60% to 90% by weight, relative to the total weight of the composition.

13. The method of claim 1, wherein, relative to the total weight of the composition, the composition comprises: a) 10% to 40% by weight of ethanol; b) 0.05% to 1.5% by weight of at least one nonionic surfactant selected from PEG-20 hydrogenated castor oil, PEG-30 hydrogenated castor oil, PEG-40 hydrogenated castor oil, PEG-45 hydrogenated castor oil, PEG-50 hydrogenated castor oil, PEG-54 hydrogenated castor oil, PEG-55 hydrogenated castor oil, PEG-60 hydrogenated castor oil, PEG-80 hydrogenated castor oil, PEG-100 hydrogenated castor oil, and mixtures thereof; and c) 0.03% to 5% by weight of at least one carboxylic acid of formula (I) and / or a salt thereof, selected from N,N-dicarboxymethyl-L-glutamic acid, tetrasodium N,N-bis(carboxymethyl)-L-glutamic acid, and mixtures thereof.