Process for conditioning the hair
Patent Information
- Application Number
- EP2023957094
- Authority / Receiving Office
- EP · EP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2023-10-31
- Publication Date
- 2026-09-09
AI Technical Summary
Existing hair conditioning products often result in a heavy coating that makes hair fibers sticky and prone to dirt, failing to deliver effective long-lasting root lifting.
A process for conditioning hair using a composition comprising a water-soluble penetration enhancer, a nonionic surfactant, and a carboxylic acid of formula (I) and/or its salt, which enhances penetration and root lifting without the heavy coating.
The process effectively delivers good hair root lifting, preventing hair fibers from sticking together and reducing dirt accumulation, while maintaining a lightweight feel.
Smart Images

Figure PCTCN2023128335-FTAPPB-I100001 
Figure PCTCN2023128335-FTAPPB-I100002 
Figure PCTCN2023128335-FTAPPB-I100003
Abstract
Description
PROCESS FOR CONDITIONING THE HAIRTECHNICAL FIELD
[0001] The present invention belongs to cosmetics field. In particular, the present invention relates to a process for conditioning the hair.BACKGROUND ART
[0002] Consumers desires airy look, which refers to a high crown volume look and naturally waving hair. Usually, in order to get a high crown look, long lasting root lifting is the key.
[0003] Currently, there are some solutions using styling polymers such as Vinyl pyrrolidone / vinyl acetate copolymer and / or carbomer for delivering root lifting in the art.
[0004] Some products on the market result in a heavy coating, which makes the hair fibers sticky to each other and easy to get dirty.
[0005] Thus, it is desired to have an effective solution for treating the hair which can deliver good hair root lifting benefits when applied on the scalp and the hair roots.SUMMARY OF THE INVENTION
[0006] An object of the present invention is thus to develop a process for conditioning the hair, which can deliver good hair root lifting.
[0007] Thus, according to a first aspect, the present invention provides a process for conditioning the hair, comprising applying on the hair a composition comprising:
[0008] a) at least one water soluble penetration enhancer selected from C2-C8 monoalcohols;
[0009] b) at least one nonionic surfactant; and
[0010] c) at least one carboxylic acid of formula (I) and / or salt thereof: R1-N- (CH (R2) COOH) 2 (I)
[0011] in which:
[0012] - R1 represents a hydrogen atom or a -CH (COOH) - (CH2) 2-COOH, -CH2CH2OH, -CH (CH3) COOH, - (CH2) 2N (COR3) -CH2-COOH or -CH (COOH) -CH2-COOH group; and
[0013] - R2 represents a CH2COOH group when R1 represents a hydrogen atom or R2 represents a hydrogen atom when R1 is other than a hydrogen atom; and
[0014] - R3 represents a linear or branched alkyl group comprising from 1 to 4 carbon atoms or cyclic alkyl group comprising from 3 to 30 carbon atoms.
[0015] The inventors have found that the process according to the present invention can effectively deliver good hair root lifting.
[0016] 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.
[0017] DETAILD 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 "from…to…” .
[0019] As used herein, the term “comprising” is to be interpreted as encompassing all specifically mentioned features as well 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] 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.
[0022] 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.
[0023] As used herein, the expression "at least one" used in the present description is equivalent to the expression "one or more" .
[0024] According to the first aspect, the composition used in the process of the present invention comprises:
[0025] a) at least one water soluble penetration enhancer selected from C2-C8 monoalcohols;
[0026] b) at least one nonionic surfactant; and
[0027] c) at least one carboxylic acid of formula (I) as defined above and / or salt thereof.
[0028] Penetration enhancers
[0029] According to the first aspect, the composition according to the present invention comprises at least one water soluble penetration enhancer selected from C2-C8 monoalcohols.
[0030] Preferably, the penetration enhancer is selected from C2-C6 monoalcohols.
[0031] The penetration enhancer suitable for use in the composition according to the present invention includes, but are not limited to ethanol, n-propyl alcohol, iso-propyl alcohol, n-butanol, tert-butanol, and pentyl alcohol.
[0032] More preferably, the penetration enhancer is ethanol.
[0033] Advantageously, the penetration enhancer is present in the composition used in the process of the present invention in an amount ranging from 1 wt. %to 50 wt. %, preferably from 5 wt. %to 45 wt. %, and more preferably from 10 wt. %to 40 wt. %, relative to the total weight of the composition.
[0034] Nonionic surfactants
[0035] The composition used in the process of the present invention comprises at least one nonionic surfactant.
[0036] Exemplary nonionic surfactants include but not limited to:
[0037] (1) polyethylene oxide condensates of alkyl phenols, e.g., the condensation products of alkyl phenols having an alkyl group containing from about 6 to about 20 carbon atoms in either a straight chain or branched chain configuration, with ethylene oxide, the said ethylene oxide being present in amounts equal to from about 10 to about 60 moles of ethylene oxide per mole of alkyl phenol;
[0038] (2) those derived from the condensation of ethylene oxide with the product resulting from the reaction of propylene oxide and ethylene diamine products;
[0039] (3) condensation products of aliphatic alcohols having from about 8 to about 18 carbon atoms, in either straight chain or branched chain configurations, with ethylene oxide, e.g., acoconut alcohol ethylene oxide condensate having from about 10 to about 30 moles of ethylene oxide per mole of coconut alcohol, the coconut alcohol fraction having from about 10 to about 14 carbon atoms;
[0040] (4) long chain tertiary amine oxides of the formula [R1R2R3N→O] where R1 contains an alkyl, alkenyl or monohydroxy alkyl radical of from about 8 to about 18 carbon atoms, from 0 to about 10 ethylene oxide moieties, and from 0 to about 1 glyceryl moiety, and R2 and R3 each independently contain from about 1 to about 3 carbon atoms and from 0 to about 1 hydroxy group, e.g., methyl, ethyl, propyl, hydroxyethyl, or hydroxypropyl radicals;
[0041] (5) long chain tertiary phosphine oxides of the formula [RR'R"P→O] where R contains an alkyl, alkenyl or monohydroxyalkyl radical ranging from about 8 to about 18 carbon atoms in chain length, from 0 to about 10 ethylene oxide moieties and from 0 to 1 glyceryl moieties and R' and R" are each independently alkyl or monohydroxyalkyl groups containing from about 1 to about 3 carbon atoms;
[0042] (6) long chain dialkyl sulfoxides containing one short chain alkyl or hydroxy alkyl radical of from 1 to about 3 carbon atoms (usually methyl) and one long hydrophobic chain which include alkyl, alkenyl, hydroxy alkyl, or keto alkyl radicals containing from about 8 to about 20 carbon atoms, from 0 to about 10 ethylene oxide moieties and from 0 to 1 glyceryl moieties;
[0043] (7) alkyl polysaccharide (APS) surfactants (e.g. alkyl polyglycosides) , including APS surfactants having a hydrophobic group with about 6 to about 30 carbon atoms and a polysaccharide (e.g., polyglycoside) as the hydrophilic group; optionally, there can be a polyalkylene-oxide groupjoining the hydrophobic and hydrophilic moieties; and the alkyl group (i.e., the hydrophobic moiety) can be saturated or unsaturated, branched or unbranched, and unsubstituted or substituted (e.g., with hydroxy or cyclic rings) ; apreferred material is alkyl polyglucoside, which is commercially available from Henkel, ICI Americas, and Seppic; and
[0044] (8) polyoxyethylene alkyl ethers such as those of the formula RO (CH2CH2O) nH and polyethylene glycol (PEG) glyceryl fatty esters, such as those of the formula R (O) OCH2CH (OH) CH2 (OCH2CH2) nOH, wherein n is from 1 to about 200, preferably from about 20 to about 100, and R is an alkyl having from about 8 to about 22 carbon atoms.
[0045] Polyethylene glycol derivatives of glycerides as described in the above (8) useful herein include derivatives of mono-, di-and tri-glycerides and mixtures thereof.
[0046] Preferably, the nonionic surfactant is selected from those of the following general formula (II) :
[0047] wherein:
[0048] n, the degree of ethoxylation, is from about 4 to about 200, preferably from about 5 to about 150, more preferably from about 20 to about 120, and
[0049] R comprises an aliphatic radical having from about 5 to about 25 carbon atoms, preferably from about 7 to about 20 carbon atoms.
[0050] Suitable polyethylene glycol derivatives of glycerides can be polyethylene glycol derivatives of hydrogenated castor oil.
[0051] 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.
[0052] Advantageously, the nonionic surfactant is present in the composition used in the process of the present invention in an amount ranging from 0.01 wt. %to 10 wt. %, preferably from 0.02 wt. %to 5 wt. %, preferably from 0.03 wt. %to 3 wt. %, and more preferably from 0.05 wt. %to 1.5 wt. %, relative to the total weight of the composition.
[0053] Carboxylic acids of formula (I) and / or salts thereof
[0054] The composition used in the process of the present invention comprises at least one carboxylic acid of formula (I) and / or salt thereof: R1-N- (CH (R2) COOH) 2 (I)
[0055] in which:
[0056] - R1 represents a hydrogen atom or a -CH (COOH) - (CH2) 2-COOH, -CH2CH2OH, -CH (CH3) COOH, - (CH2) 2N (COR3) -CH2-COOH or -CH (COOH) -CH2-COOH group; and
[0057] - R2 represents a CH2COOH group when R1 represents a hydrogen atom or R2 represents a hydrogen atom when R1 is other than a hydrogen atom; and
[0058] - R3 represents a linear or branched alkyl group comprising from 1 to 4 carbon atoms or cyclic alkyl group comprising from 3 to 30 carbon atoms.
[0059] More specifically, the carboxylic acids of formula (I) correspond to:
[0060] - compounds comprising four carboxylic acid functions, when R1 represents a hydrogen atom and R2 represents a -CH2-COOH group, or when R1 represents the -CH (COOH) - (CH2) 2-COOH group and R2 represents a hydrogen atom or when R1 represents the-CH (COOH) -CH2-COOH group and R2 represents a hydrogen atom;
[0061] - compounds comprising three carboxylic acid functions, when R1 represents the -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; and
[0062] - compounds comprising two carboxylic acid functions, when R1 represents the -CH2CH2OH group and R2 represents a hydrogen atom.
[0063] The carboxylic acids of formula (I) may take the form of pure enantiomers, preferably in L configuration, or the form of mixtures, especially of racemic mixtures.
[0064] The salt of the carboxylic acid of formula (I) is preferably selected from alkali metal salts, alkaline earth metal salts, transition metal salts, organic amine salts, ammonium salts and mixtures thereof.
[0065] Examples of alkali metal salts include especially sodium (Na+) and potassium (K+) salts, whereas examples of alkaline earth metal salts include especially calcium (Ca 2+) and magnesium (Mg 2+) salts.
[0066] For the purposes of the present invention, a “transition metal” is a metal comprising an incomplete d subshell, and more particularly in the II oxidation state, such as cobalt (Co 2+) , iron (Fe 2+) , manganese (Mn 2+) , zinc (Zn 2+) and copper (Cu 2+) .
[0067] As regards the organic amine salts, mention may be made of the salts of primary, secondary or tertiary amines, or alternatively of alkanolamines. Said amines exhibit one or more identical or non-identical radicals, of linear or branched C1 to C20 alkyl type, optionally comprising a heteroatom such as oxygen.
[0068] Preferably, the carboxylic acid of formula (I) and / or salt thereof used in the composition for the process of the present invention is selected from methylglycinediacetic acid, N-lauroylethylenediamine-N, N', N'-triacetic acid, N, N-dicarboxymethylglutamic acid, iminodisuccinic acid, N, N-bis (carboxymethyl) aspartic acid, alkali metal salts thereof, alkaline earth metal salts thereof, transition metal salts thereof, organic amine salts thereof, ammonium salts thereof, optical isomers thereof, geometric isomers thereof, solvates thereof and mixtures thereof, and more preferably from N, N-dicarboxymethylglutamic acid, N, N-bis (carboxymethyl) aspartic acid, alkali metal salts thereof, alkaline earth metal salts thereof, transition metal salts thereof, organic amine salts thereof, ammonium salts thereof, optical isomers thereof, geometric isomers thereof, solvates thereof and mixtures thereof.
[0069] Better still, the carboxylic acid of formula (I) and / or salt thereof is selected from N, N-dicarboxymethyl-L-glutamic acid (GLDA) , N, N-bis (carboxymethyl) -L-aspartic acid, alkali metal salts thereof, alkaline earth metal salts thereof, transition metal salts thereof, organic amine salts thereof, ammonium salts thereof, solvates thereof and mixtures thereof.
[0070] Preferably, the carboxylic acid of formula (I) and / or salt thereof used according to the present invention is selected from N, N-dicarboxymethyl-L-glutamic acid (GLDA) , tetrasodium N, N-bis (carboxymethyl) -L-glutamate (tetrasodium glutamate diacetate) , and mixtures thereof.
[0071] Advantageously, the carboxylic acid of formula (I) and / or salt thereof is present in the composition used in the process of the present invention in an amount ranging from 0.01 wt. %to 20 wt. %, preferably from 0.02 wt. %to 10 wt. %, preferably from 0.03 wt. %to 5 wt. %, relative to the total weight of the composition.
[0072] Cellulose-based polymers
[0073] The composition used in the process of the present invention preferably comprises at least one cellulose-based polymer.
[0074] As used herein, the term "cellulose-based" polymer is intended to mean any polysaccharide compound having in its structure sequences of glucose residues linked together via β-1, 4 bonds; in addition to unsubstituted celluloses, the cellulose derivatives may be anionic, cationic, amphoteric or non-ionic.
[0075] Preferably, the cellulose-based polymer that used according to the invention is chosen from unsubstituted celluloses, including those in a microcrystalline form, cellulose esters, cellulose ethers, cellulose ester ethers, and mixture thereof.
[0076] Among the cellulose esters are mineral esters of cellulose (cellulose nitrates, sulfates, phosphates, etc. ) , organic cellulose esters (cellulose monoacetates, triacetates, amidopropionates, acetatebutyrates, acetatepropionates and acetatetrimellitates, etc. ) , and mixed organic / mineral esters of cellulose, such as cellulose acetatebutyrate sulfates and cellulose acetatepropionate sulfates.
[0077] Cellulose ethers include non-ionic cellulose ethers, anionic cellulose ethers, and cationic cellulose ethers.
[0078] Among the non-ionic cellulose ethers, mention may be made of (C1-C4) alkylcelluloses, such as methylcelluloses and ethylcelluloses (for example, Ethocel standard 100 Premium from Dow Chemical) ; (poly) hydroxy (C1-C4) alkylcelluloses, such as hydroxymethylcelluloses, hydroxyethylcelluloses (for example, Natrosol 250 HHR provided by Ashland) and hydroxypropylcelluloses (for example, Klucel EF from Aqualon) ; mixed (poly) hydroxy (C1-C4) alkyl (C1-C4) alkylcelluloses, such as hydroxypropylmethylcelluloses (for example, Methocel E4M from Dow Chemical) , hydroxyethylmethylcelluloses, hydroxyethylethylcelluloses (for example, Bermocoll 20 E 481 FQ from Akzo Nobel) and hydroxybutylmethylcelluloses.
[0079] Among the anionic cellulose ethers, mention may be made of (poly) carboxy (C1-C4) alkylcelluloses and salts thereof. By way of example, mention may be made of carboxymethylcelluloses, carboxymethylmethylcelluloses (for example Blanose 7M from the company Aqualon) and carboxymethylhydroxyethylcelluloses, and the sodium salts thereof.
[0080] Among the cationic cellulose ethers, mention may be made of cationic cellulose derivatives such as cellulose copolymers or cellulose derivatives grafted with a water-soluble quaternary ammonium monomer, and described in particular in patent US 4 131 576, such as (poly) hydroxy (C1-C4) alkyl celluloses, for instance hydroxymethyl-, hydroxyethyl-or hydroxypropylcelluloses grafted especially with a methacryloylethyltrimethylammonium, methacrylamidopropyltrimethylammonium or dimethyldiallylammonium salt.
[0081] Among the cellulose ester ethers, mention may be made of hydroxypropylmethylcellulose phthalates and ethylcellulose sulfates.
[0082] More preferably, the cellulose-based polymer is selected from non-ionic cellulose ethers.
[0083] Even more preferably, the cellulose-based polymer is selected from (poly) hydroxy (C1-C4) alkylcelluloses, mixed (poly) hydroxy (C1-C4) alkyl (C1-C4) alkylcelluloses, and mixtures thereof.
[0084] Most preferably, the cellulose-based on polymer is selected from hydroxymethylcelluloses, hydroxyethylcelluloses, hydroxypropylcelluloses; hydroxypropylmethylcelluloses, hydroxyethylmethylcelluloses, hydroxyethylethylcelluloses, hydroxybutylmethylcelluloses and mixtures thereof.
[0085] Advantageously, the cellulose-based polymer is present in the composition used in the process of the present invention in an amount ranging from 0.01 wt. %to 10 wt. %, preferably from 0.02 wt. %to 5 wt. %, preferably ranging from 0.02 wt. %to 3 wt. %, preferably ranging 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.
[0086] Aqueous phase
[0087] The composition used in the process of the present invention may further comprise a continuous aqueous phase.
[0088] The aqueous phase comprises water.
[0089] Water is preferably present in the composition used in the process of the present invention in an amount ranging from 50 wt. %to 99 wt. %, preferably from 60 wt. %to 90 wt. %, relative to the total weight of the composition.
[0090] Cosmetic active ingredients
[0091] Optionally, the composition used in the process of the present invention comprises one or more additional active ingredients for conditioning the hair and / or caring for the scalp.
[0092] The skilled in the art can select the amount of the additional active ingredients according to desired purpose.
[0093] Adjuvants
[0094] The composition used in the process according to the present invention may also comprise additional adjuvants, such as fragrances, pH adjusters, preservatives and so on.
[0095] The skilled in the art can select the amount of the additional adjuvants so as not to adversely impact the final use of the composition according to the present invention.
[0096] According to a preferred embodiment, the composition used in the process of the present invention comprising, relative to the total weight of the composition:
[0097] a) from 10 wt. %to 40 wt. %of ethanol;
[0098] b) from 0.05 wt. %to 1.5 wt. %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
[0099] c) from 0.03 wt. %to 5 wt. %of at least one carboxylic acid of formula (I) and / or salt thereof selected from N, N-dicarboxymethyl-L-glutamic acid (GLDA) , tetrasodium N, N-bis (carboxymethyl) -L-glutamate, and mixtures thereof.
[0100] Preparation and use
[0101] The composition used in the process according to the present invention can be prepared by mixing ingredients a) to c) , as essential ingredients, as well as additional ingredient (s) , as explained above.
[0102] With the use of said composition, the process according to the present invention can effectively deliver good hair root lifting.EXAMPLES
[0103] The examples that follow are given as non-limiting illustrations of the present invention.
[0104] Main raw materials used, trade names and supplier thereof are listed in Table 1.
[0105] Table 1
[0106] Invention Examples 1-3 and Comparative Examples 1-4
[0107] Compositions of invention examples (IE. ) 1-3 and comparative examples (CE. ) 1-4 were prepared with the components listed in Table 2 (the contents are expressed as weight percentages based on the total weight of each composition, unless otherwise indicated) :
[0108] Table 2
[0109] Compositions of invention examples 1-3 are compositions used in the process according to the present invention.
[0110] Composition of comparative example 1 does not comprise at least one carboxylic acid of formula (I) and / or salt thereof.
[0111] Composition of comparative example 2 does not comprise at least one water soluble penetration enhancer selected from C2-C8 monoalcohols.
[0112] Composition of comparative example 3 does not comprise at least one nonionic surfactant.
[0113] Composition of comparative example 4 comprises propanediol instead of at least one water soluble penetration enhancer selected from C2-C8 monoalcohols.
[0114] Preparation procedure:
[0115] Each composition was prepared as follows, taking composition of invention example 1 for example:
[0116] 1) . adding water in a main container,
[0117] 2) . adding hydroxyethylcellulose with stirring until the powder of the hydroxyethylcellulose is well wettened and dispersed;
[0118] 3) . adding tetrasodium glutamate diacetate and PEG-60 hydrogenated castor oil with stirring until well solubilized;
[0119] 4) . adding ethanol with stirring to obtain a homogeneous composition; and
[0120] 5) . adjusting pH with citric acid.
[0121] Evaluation:
[0122] Lasting root lifting delivered by compositions of invention examples 1-3 and comparative examples 1-4 was evaluated by an in-vitro swatch test and / or a double-blind study.
[0123] In-vitro swatch test
[0124] 1g natural hair swatches were fixed upside down on a support via the root by a fixing clip. 0.45 g compositions to be tested was applied on the fiber 3 cm from the root.
[0125] The lasting root lifting was scored from 1 to 5 by a hair sensory expert according to the following criterion:
[0126] 5: hair root is lifted, flapping down at least 2.5 cm from the fixing clip, and can hold for 8 hours.
[0127] 4: hair root is lifted, flapping down at least 2.5 cm from the fixing clip, and can hold for 4 hours.
[0128] 3: hair root is lifted, flapping down at least 2.5 cm from the fixing clip, cannot hold for 4 hours.
[0129] 2: hair root is lifted, flapping down within 2 cm from the fixing clip;
[0130] 1: hair root is lifted, flapping down within 1.5 cm from the fixing clip.
[0131] The scores on lasting root lifting delivered by compositions of invention examples 1-3 and comparative examples 1-4 were summarized in Table 3.
[0132] Table 3
[0133] Double-blind study
[0134] In a monocentric, randomized, and double-blind study, scores of root lifting benefits delivered by composition of invention example 1 was given by dermatologists as follows.
[0135] Hair was divided from the middle, the score was given according to the measurement of the angle-αbetween the two parts.
[0136] Score 1: 180≥alpha>165
[0137] Score 2: 165≥alpha>150
[0138] Score 3: 150≥alpha>135
[0139] Score 4: 135≥alpha>120
[0140] Score 5: 120≥alpha>105
[0141] Score 6: 105≥alpha>90
[0142] Score 7: 90≥alpha>75
[0143] Score 8: 75≥alpha>60
[0144] Score 9: 60≥alpha>45
[0145] The score was given at immediately after the 1st application (Timm) , after 6 weeks application (Tw6) and after 8 weeks application (Tw8) with 3 times per week. The baseline was the result before application of composition of invention example 1.
[0146] “Root lifting change from baseline” was calculated by the average difference of score between the time points (Timm, Tw6, Tw8) and the baseline (T0) .
[0147] The significances on lasting root lifting delivered by composition of invention example 1 were summarized in Table 4.
[0148] Table 4 *: significant improvement verses baseline
[0149] It can be seen from Tables 3 and 4 that the process using composition of the present invention results in good improvement on hair root lifting.
Claims
1.A process for conditioning the hair, comprising applying on the hair a composition comprising:a) at least one water soluble penetration enhancer selected from C2-C8 monoalcohols;b) at least one nonionic surfactant; andc) at least one carboxylic acid of formula (I) and / or salt thereof:R1-N- (CH (R2) COOH) 2 (I)in which:- R1 represents a hydrogen atom or a -CH (COOH) - (CH2) 2-COOH, -CH2CH2OH, -CH (CH3) COOH, - (CH2) 2N (COR3) -CH2-COOH or -CH (COOH) -CH2-COOH group; and- R2 represents a CH2COOH group when R1 represents a hydrogen atom or R2 represents a hydrogen atom when R1 is other than a hydrogen atom; and- R3 represents a linear or branched alkyl group comprising from 1 to 4 carbon atoms or cyclic alkyl group comprising from 3 to 30 carbon atoms.2.Process according to claim 1, wherein the penetration enhancer is selected from C2-C6 monoalcohols, preferably, the penetration enhancer is ethanol.3.Process according to claim 1 or 2, wherein the penetration enhancer is present in an amount ranging from 1 wt. %to 50 wt. %, preferably from 5 wt. %to 45 wt. %, and more preferably from 10 wt. %to 40 wt. %, relative to the total weight of the composition.4.Process according to any of claims 1-3, wherein the non-ionic surfactant is selected from those of the following general formula (II) : wherein:n, the degree of ethoxylation, is from about 4 to about 200, preferably from about 5 to about 150, more preferably from about 20 to about 120, andR comprises an aliphatic radical having from about 5 to about 25 carbon atoms, preferably from 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.Process according to any of claims 1-4, wherein the nonionic surfactant is present in an amount ranging from 0.01 wt. %to 10 wt. %, preferably from 0.02 wt. %to 5 wt. %, preferably from 0.03 wt. %to 3 wt. %, and more preferably from 0.05 wt. %to 1.5 wt. %, relative to the total weight of the composition.6.Process according to any of claims 1-5, wherein the carboxylic acid of formula (I) and / or salt thereof is selected from methylglycinediacetic acid, N-lauroylethylenediamine-N, N', N'-triacetic acid, N, N-dicarboxymethyl glutamic acid, iminodisuccinic acid, N, N-bis (carboxymethyl) aspartic acid, alkali metal salts thereof, alkaline earth metal salts thereof, transition metal salts thereof, organic amine salts thereof, ammonium salts thereof, optical isomers thereof, geometric isomers thereof, solvates thereof and mixtures thereof, and preferably selected from N, N-dicarboxymethyl glutamic acid, N, N-bis (carboxymethyl) aspartic acid, alkali metal salts thereof, alkaline earth metal salts thereof, transition metal salts thereof, organic amine salts thereof, ammonium salts thereof, optical isomers thereof, geometric isomers thereof, solvates thereof and mixtures thereof, more preferably selected from N, N-dicarboxymethyl-L-glutamic acid, tetrasodium N, N-bis (carboxymethyl) -L-glutamate, and mixtures thereof.7.Process according to any of claims 1-6, wherein the carboxylic acid of formula (I) and / or salt thereof is present in an amount ranging from 0.01 wt. %to 20 wt. %, preferably from 0.02 wt. %to 10 wt. %, preferably from 0.03 wt. %to 5 wt. %, relative to the total weight of the composition.8.Process according to any of claims 1-7, wherein the composition further comprises at least one cellulose-based polymer, preferably the cellulose-based polymer is selected from unsubstituted celluloses, cellulose esters, cellulose ethers, cellulose ester ethers, and mixture thereof.9.Process according to claim 8, wherein the cellulose-based polymer is selected from non-ionic cellulose ethers, preferably, the cellulose-based polymer is selected from (poly) hydroxy (C1-C4) alkylcelluloses, mixed (poly) hydroxy (C1-C4) alkyl (C1-C4) alkylcelluloses, and mixtures thereof, more preferably, the cellulose-based on polymer is selected from hydroxymethylcelluloses, hydroxyethylcelluloses, hydroxypropylcelluloses; hydroxypropylmethylcelluloses, hydroxyethylmethylcelluloses, hydroxyethylethylcelluloses, hydroxybutylmethylcelluloses and mixtures thereof.10.Process 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 ranging from 0.02 wt. %to 5 wt. %, preferably ranging from 0.02 wt. %to 3 wt. %, preferably ranging from 0.03 wt. %to 1.5 wt. %, and more preferably ranging from 0.03 wt. %to 0.5 wt. %, relative to the total weight of the composition.11.Process according to any of claims 1-10, wherein the composition further comprises a continuous aqueous phase, wherein the aqueous phase comprises water.12.Process according to claim 11, wherein water is present in an amount ranging from 50 wt. %to 99 wt. %, preferably from 60 wt. %to 90 wt. %, relative to the total weight of the composition.13.Process according to claim 1, wherein the composition comprising, relative to the total weight of the composition:a) from 10 wt. %to 40 wt. %of ethanol;b) from 0.05 wt. %to 1.5 wt. %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; andc) from 0.03 wt. %to 5 wt. %of at least one carboxylic acid of formula (I) and / or salt thereof selected from N, N-dicarboxymethyl-L-glutamic acid, tetrasodium N, N-bis (carboxymethyl) -L-glutamate, and mixtures thereof.