FR2954096A1 - Water-in-oil inverse emulsion, useful for coloring or lightening human keratin material such as hair, comprises fatty body having liquid silicone e.g. liquid polydimethyl siloxane, and alkalizing agent e.g. ammonia - Google Patents

Abstract

Water-in-oil inverse emulsion comprises: (a) at least 30 wt.% of one or more fatty body comprising liquid silicone; and (b) one or more alkalizing agent. Independent claims are included for: (1) process for coloring or lightening human keratin material comprising applying the emulsion in the presence of a composition comprising one or more oxidizing agent, on the material; and (2) a two compartment device comprising the emulsion in one compartment, and the composition comprising one or more oxidizing agent in the other compartment.

Description

REVERSE EMULSION FOR TREATING HAIR COMPRISING LIQUID SILICONE

The subject of the present invention is an emulsion for coloring or lightening human keratin fibers in the form of a water-in-oil inverse emulsion. Among the methods for staining human keratinous fibers, such as the hair, mention may be made of oxidation or permanent staining. More particularly, this mode of staining uses one or more oxidation dyes, usually one or more oxidation bases possibly associated with one or more couplers. In general, the oxidation bases are chosen from ortho- or para-phenylenediamines, ortho- or para-aminophenols as well as heterocyclic compounds. These oxidation bases are colorless or weakly colored compounds which, combined with oxidizing products, allow access to colored species. Very often, the shades obtained with these oxidation bases are varied by combining them with one or more couplers, the latter being chosen in particular from aromatic meta-diamines, meta-aminophenols, meta-diphenols and certain heterocyclic compounds, such as indole compounds. The variety of molecules involved in the oxidation bases and couplers allows a rich palette of colors to be obtained. Also known direct or semi-permanent coloring. The method conventionally used in direct dyeing consists in applying to the keratin fibers direct dyes which are colored and coloring molecules, having an affinity for the fibers, allowing them to be paused and then rinsed off. The direct dyes generally employed are chosen from nitrobenzene, anthraquinone, nitropyridine, azo, methine, azomethine, xanthene, acridine, azine or triarylmethane direct dyes. This type of process does not require the use of an oxidizing agent to develop the coloring. However, it is not excluded to implement in order to obtain with coloring, a lightening effect. We then speak of direct or semi-permanent coloration in lightening conditions.

The permanent or semi-permanent coloring processes under lightening conditions therefore consist in using, with the dye composition, an aqueous composition comprising at least one oxidizing agent, under alkaline pH conditions in the vast majority of cases. This oxidizing agent has, among other things, the function of degrading the melanin of the hair, which, depending on the nature of the oxidizing agent present, leads to a more or less pronounced lightening of the fibers. Thus, for relatively low lightening, the oxidizing agent is generally hydrogen peroxide. When greater lightening is desired, it is customary to use peroxygenated salts, such as persulfates for example, in the presence of hydrogen peroxide. There is a need to have a satisfactory efficacy of the lightening and coloring products, especially in terms of lightening power or intensity of coloration and / or selectivity, while reducing the adverse effects associated with the simultaneous presence of alkaline agents and oxidizing agents such as hydrogen peroxide, in particular by reducing the degradation of keratinous fibers and by reducing the discomfort associated with the odor of the alkaline agents used, such as ammonia and amines. It is therefore sought to increase the effects of alkaline agents and / or oxidizing agents while having a maximum dyeing or lightening efficacy on keratin fibers. This and other objects are achieved by the present invention which therefore relates to a water-in-oil inverse emulsion comprising (a) at least 30% by weight of one or more fatty substances selected from liquid silicones and (b) a or several basifying agents.

It also relates to a process for treating human keratin fibers from the emulsion of the invention. The invention likewise relates to a device with two compartments comprising in one of the compartments the inverse emulsion of the invention and in the other, a composition containing one or more oxidizing agents.

Other characteristics and advantages of the invention will emerge more clearly on reading the description and examples which follow. In what follows, and unless otherwise indicated, the boundaries of a domain of values are included in this field.

The term "fatty substance" means an organic compound which is insoluble in water at ordinary temperature (25 ° C.) and at atmospheric pressure (760 mmHg, ie 1.013 × 10 5 Pa) (solubility less than 5% and preferably greater than 1%). more preferably to 0.1%). They have in their structure at least one hydrocarbon chain containing at least 6 carbon atoms or a chain of at least two siloxane groups. In addition, the fatty substances are soluble in organic solvents under the same conditions of temperature and pressure, such as for example chloroform, ethanol or benzene. In the context of the invention, the fatty substances do not comprise a carboxylic acid function COOH or COO-. The human keratinous fibers treated by the process according to the invention are preferably the hair. The inverse emulsion according to the invention is a water-in-oil (W / O) emulsion comprising at least 30% by weight of one or more fatty substances chosen from liquid silicones at 25 ° C. and at atmospheric pressure. The W / O emulsions according to the invention are true emulsions to distinguish microemulsions which are thermodynamically stable systems in contrast to true emulsions. The size of the droplets of the dispersed phase of the emulsions of the invention is preferably between 10 nm and 100 μm and preferably between 200 nm and 50 μm. This is the average diameter D (3.2) measurable, in particular using a laser granulometer. By liquid silicone is meant a liquid organopolysiloxane at ordinary temperature (25 ° C.) and at atmospheric pressure (760 mmHg, ie 1.013 × 10 5 Pa). Preferably, the liquid silicone is chosen from liquid polydialkylsiloxanes, in particular liquid polydimethylsiloxanes (PDMS), and liquid polyorganosiloxanes comprising at least one aryl group. These silicones can also be organomodified The organomodified silicones that can be used in accordance with the invention are liquid silicones as defined above and comprising in their structure one or more organofunctional groups attached via a hydrocarbon-based group.

Organopolysiloxanes are further defined in Walter Noll's "Chemistry and Technology of Silicones" (1968), Academie Press. They can be volatile or nonvolatile. When they are volatile, the silicones are more particularly chosen from those having a boiling point of between 60 ° C. and 260 ° C., and even more particularly from: (i) cyclic polydialkylsiloxanes containing from 3 to 7, preferably from 4 to 5 silicon atoms. It is, for example, octamethylcyclotetrasiloxane sold in particular under the name VOLATILE SILICONE® 7207 by UNION CARBIDE or SILBONE® 70045 V2 by RHODIA, decamethylcyclopentasiloxane sold under the name VOLATILE SILICONE® 7158 by UNION CARBIDE, and SILBONE ® 70045 V5 by RHODIA, the dodecamethylcyclopentasiloxane marketed under the name of SILSOFT 1217 by MOMENTIVE PERFORMANCE MATERIALS and their mixtures.

Mention may also be made of cyclocopolymers of the dimethylsiloxane / methylalkylsiloxane type, such as the VOLATILE® SILICONE FZ 3109 sold by UNION CARBIDE, of formula: ## STR1 ## ## STR2 ## We can also mention mixtures of cyclic polydialkylsiloxanes with organic compounds derived from silicon, such as the mixture of octamethylcyclotetrasiloxane and tetramethylsilylpentaerythritol (50/50) and the mixture of octamethylcyclotetrasiloxane and oxy-1,1 '- (hexa-2,2,2', 2 ') , 3,3'-trimethylsilyloxy) bis-neopentane (ii) linear volatile polydialkylsiloxanes having 2 to 9 silicon atoms and having a viscosity of less than or equal to 5 × 10 -6 m 2 / s at 25 ° C. For example, decamethyltetrasiloxane marketed in particular under the name "SH 200" by Toray Silicone, silicones in this class are also described in the article published in Cosmetics and Toil. et al., Vol 91, Jan. 76, p 27-32 - TODD & BYERS "Volatile Silicone fluids for cosmetics" .. The viscosity of silicones is measured at 25 ° C according to ASTM 445 Appendix C. It is also possible to use non-volatile polydialkylsiloxanes. These non-volatile silicones are more particularly chosen from polydialkylsiloxanes, among which, for example, polydimethylsiloxanes containing trimethylsilyl end groups, among these polydialkylsiloxanes, mention may be made, for example, of non-volatile silicones. the following commercial products are limited: SILBIONE® oils of the 47 and 70 047 series or the MIRASIL® oils marketed by RHODIA, such as, for example, the 70 047 V 500 000 oil, the MIRASIL® series oils marketed by the company. RHODIA company - DOW CORNING series 200 oils such as DC200 having a viscosity of 60 000 mm2 / s - GENERAL ELECTRIC VISCASIL® oils and certain SF series oils (SF 96, SF 18) from GENERAL ELECTRIC One can also mention polydimethylsiloxanes with dimethylsilanol end groups known under the name of dimethiconol (CTFA), such as the oils of the 48 series of the company RHO DIA Among the silicones containing aryl groups are polydiaryl siloxanes, especially polydiphenylsiloxanes, and polyalkylarylsiloxanes. By way of example, mention may be made of the products sold under the following names: SILBIONE® oils of the 70 641 series from RHODIA; . RHODORSIL® 70 633 and 763 RHODIA series of oils; . DOW CORNING 556 COSMETIC GRAD FLUID oil from DOW CORNING; . silicones of the PK series from BAYER, such as the product PK20; . some oils of the SF series of GENERAL ELECTRIC such as SF 1023, SF 1154, SF 1250, SF 1265.

Organomodified liquid silicones may in particular have polyethyleneoxy and / or polypropyleneoxy groups. The silicone KF-6017 proposed by SHIN ETSU and the oils SILWET® L 722, L 77 from UNION CARBIDE can thus be mentioned. Preferably, the concentration of liquid silicones in the W / O emulsions of the invention may range from 30% to 90%, preferably from 30% to 75%, even more preferably from 30% to 60%, more preferably from 30% to 55%, more preferably from 35 to 55% relative to the total weight of the emulsion. The emulsions of the invention may comprise one or more other additional fatty substances.

More particularly, the additional fatty substances are chosen from hydrocarbons, non-silicone oils of vegetable or synthetic origin other than liquid hydrocarbons, fatty alcohols, fatty acid esters and / or fatty alcohol esters, non-fatty silicones, silicones other than the liquid silicones of the invention. It is recalled that for the purposes of the invention, the alcohols, esters and fatty acids more particularly have at least one hydrocarbon group, linear or branched, saturated or unsaturated, comprising 6 to 30 carbon atoms, which is optionally substituted, in particular by one or more hydroxyl groups, in particular 1 to 4. If they are unsaturated, these compounds may comprise one to three carbon-carbon double bonds, conjugated or otherwise. More particularly, the hydrocarbons are chosen from: linear or branched C6-C16 lower alkanes, which may be cyclic. By way of example, mention may be made of hexane, undecane, dodecane, and the like, isoparaffins such as isohexadecane, isododecane and isodecane. linear or branched hydrocarbons of animal or synthetic mineral origin of more than 16 carbon atoms, such as liquid paraffins, petroleum jelly, petrolatum oil, polydecenes, hydrogenated polyisobutene such as Parleam® squalane. In a preferred variant, the liquid hydrocarbon or hydrocarbons are chosen from paraffin oils or vaseline oil. As oils of vegetable or synthetic origin, which can be used in the emulsion of the invention, mention may be made, for example, of: triglyceride oils of vegetable or synthetic origin, such as liquid triglycerides of fatty acids containing from 6 to 30 carbon atoms such as heptanoic or octanoic acid triglycerides or, for example, sunflower, corn, soya, squash, grape seed, sesame, hazelnut, apricot, macadamia, arara, sunflower, castor oil, avocado, triglycerides of caprylic / capric acids such as those sold by Stearineries Dubois or those sold under the names Miglyol® 810, 812 and 818 by the company Dynamit Nobel, the oil of jojoba, shea butter oil. fluorinated oils such as perfluoromethylcyclopentane and perfluoro-1,3-dimethylcyclohexane, sold under the names "FLUTEC® PC1" and "FLUTEC® PC3" by BNFL Fluorochemicals; perfluoro-1,2-dimethylcyclobutane; perfluoroalkanes such as dodecafluoropentane and tetradecafluorohexane, sold under the names "PF 5050®" and "PF 5060®" by the company 3M, or bromoperfluorooctyl sold under the name "Foralkyl®" by the company Atochem; nonafluoro-methoxybutane and nonafluoroethoxyisobutane; perfluoromorpholine derivatives, such as 4-trifluoromethyl perfluoromorpholine sold under the name "PF 5052®" by the company 3M. The fatty alcohols are more particularly chosen from saturated or unsaturated alcohols, linear or branched, containing from 8 to 30 carbon atoms. For example, cetyl alcohol, stearyl alcohol and their mixture (cetylstearyl alcohol), octyldodecanol, 2-butyloctanol, 2-hexyldecanol, 2-undecylpentadecanol, oleic alcohol or linoleic alcohol may be mentioned; . With regard to fatty acid esters and / or fatty alcohols, advantageously different from the triglycerides mentioned above; mention may be made in particular of linear or branched C 1 -C 26 saturated or unsaturated aliphatic mono or poly acid esters and of linear or branched C 1 -C 26 saturated or unsaturated aliphatic mono or polyalcohols, the total number of carbon of the esters being greater than or equal to 10. Among the monoesters, mention may be made of dihydroabietyl behenate; octyldodecyl behenate; isoketyl behenate; cetyl lactate; C12-C15 alkyl lactate; isostearyl lactate; lauryl lactate; linoleyl lactate; oleyl lactate; (iso) stearyl octanoate; isocetyl octanoate octyl octanoate; cetyl octanoate; decyl oleate; isocetyl isostearate; isocetyl laurate; isocetyl stearate; isodecyl octanoate isodecyl oleate; isononyl isononanoate; isostearyl palmitate; methyl ricinoleate acetyl; myristyl stearate; octyl isononanoate; 2-ethylhexyl isononate; octyl palmitate; octyl pelargonate; octyl stearate; octyldodecyl erucate; oleyl erucate; ethyl palmitates and isopropyl palmitate, ethyl-2-hexyl palmitate, 2-octyldecyl palmitate, alkyl myristates such as isopropyl, butyl, cetyl, 2-octyldodecyl myristate; , styryl, hexyl stearate, butyl stearate, isobutyl stearate; dioctyl malate, hexyl laurate, 2-hexyldecyl laurate.

Still in the context of this variant, it is also possible to use esters of C 4 -C 22 di or tricarboxylic acids and of C 1 -C 22 alcohols and esters of mono di or tricarboxylic acids and di, tri, alcohols. C2-C26 tetra or pentahydroxy. These include: diethyl sebacate; diisopropyl sebacate; diisopropyl adipate; di-propyl adipate; dioctyl adipate; diisostearyl adipate; dioctyl maleate; glyceryl undecylenate; octyldodecyl stearoyl stearate; pentaerythrityl monoricinoleate; pentaerythrityl tetraisononanoate; pentaerythrityl tetrapelargonate; pentaerythrityl tetraisostearate; pentaerythrityl tetraoctanoate; propylene glycol dicaprylate; propylene glycol dicaprate, tridecyl erucate; triisopropyl citrate; triisotearyl citrate; glyceryl trilactate; glyceryl trioctanoate; trioctyldodecyl citrate; trioleyl citrate, propylene glycol dioctanoate; neopentyl glycol diheptanoate; diethylene glycol diisanonate; and polyethylene glycol distearates.

Among the esters mentioned above, it is preferred to use ethyl, isopropyl, myristyl, cetyl, stearyl palmitates, ethyl-2-hexyl palmitate, 2-octyldecyl palmitate, myristates of alkyls such as isopropyl, butyl, cetyl, 2-octyldodecyl myristate, hexyl stearate, butyl stearate, isobutyl stearate; dioctyl malate, hexyl laurate, 2-hexyldecyl laurate and isononyl isononanate, cetyl octanoate. The emulsion may also comprise, as fatty ester, esters and diesters of C 6 -C 30, preferably C 12 -C 22, fatty acid sugars. It is recalled that "sugar" is understood to mean oxygenated hydrocarbon compounds which have several alcohol functions, with or without an aldehyde or ketone function, and which comprise at least 4 carbon atoms. These sugars can be monosaccharides, oligosaccharides or polysaccharides. Suitable sugars include, for example, sucrose (or sucrose), glucose, galactose, ribose, fucose, maltose, fructose, mannose, arabinose, xylose, lactose, and their derivatives. especially alkylated, such as methylated derivatives such as methylglucose. The esters of sugars and fatty acids may be chosen in particular from the group comprising the esters or mixtures of esters of sugars described above and of C 6 -C 30, preferably C 12 -C 22 fatty acids, linear or branched, saturated or unsaturated. If unsaturated, these compounds may comprise one to three carbon-carbon double bonds, conjugated or otherwise. The esters according to this variant may also be chosen from mono-, di-, tri- and tetraesters, polyesters and mixtures thereof.

These esters may be for example oleate, laurate, palmitate, myristate, behenate, cocoate, stearate, linoleate, linolenate, caprate, arachidonates, or mixtures thereof, such as in particular the mixed oleo-palmitate, oleostearate and palmitostearate esters. More particularly, the mono- and di-esters are used, and especially the mono- or dioleate, stearate, behenate, oleopalmitate, linoleate, linolenate, oleostearate, sucrose, glucose or methylglucose. By way of example, mention may be made of the product sold under the name Glucate® DO by the company Amerchol, which is a methylglucose dioleate. Mention may also be made, by way of examples, of esters or mixtures of esters of fatty acid sugar: the products sold under the names F160, F140, F110, F90, F70, SL40 by the company Crodesta, respectively denoting sucrose palmito-stearates of 73% monoester and 27% di- and tri-ester, 61% monoester and 39% di-, tri- and tetraester, 52% monoester and 48% monoester; % di-, tri- and tetraester, 45% monoester and 55% di-, tri- and tetraester, 39% monoester and 61% di-, tri-, and tetra. -ester, and sucrose mono-laurate; the products sold under the name Ryoto Sugar Esters, for example referenced B370 and corresponding to sucrose behenate formed from 20% monoester and 80% di-triester-polyester; the sucrose mono-dipalmito-stearate marketed by Goldschmidt under the name Tegosoft® PSE. The wax or waxes (non-silicone) are chosen in particular from carnauba wax, candelilla wax, and alfa wax, paraffin wax, ozokerite, vegetable waxes such as olive wax, rice wax, hydrogenated jojoba wax or the absolute waxes of flowers such as the essential wax of blackcurrant flower sold by the company BERTIN (France), animal waxes such as beeswax, or modified beeswax (cerabellina); other waxes or waxy raw materials that can be used according to the invention are, in particular, marine waxes, such as the one sold by SOPHIM under the reference M82, and polyethylene or polyolefin waxes in general. The emulsion may comprise silicones other than liquid silicones, for example silicones in the form of waxes, resins or gums.

Preferably, the non-liquid silicones are chosen from polydialkylsiloxanes, especially polydimethylsiloxanes (PDMS), and organomodified polysiloxanes comprising at least one functional group chosen from poly (oxyalkylene) groups, amino groups and alkoxy groups.

The silicone gums that can be used in accordance with the invention are in particular polydialkylsiloxanes, preferably polydimethylsiloxanes having high average molecular weights of between 200,000 and 1,000,000 used alone or in a mixture in a solvent. These gums are, for example, mixtures such as: mixtures formed from an end-hydroxylated polydimethylsiloxane or dimethiconol (CTFA) and a cyclic polydimethylsiloxane also called cyclomethicone (CTFA) such as the product Q2 1401 marketed by the company Dow Corning; mixtures of a polydimethylsiloxane gum and a cyclic silicone such as the product SF 1214 Silicone Fluid from the company General Electric, this product is an SF 30 gum corresponding to a dimethicone, having a number average molecular weight of 500,000 solubilized in oil SF 1202 Silicone Fluid corresponding to decamethylcyclopentasiloxane; mixtures of two PDMSs of different viscosities, and more particularly of a PDMS gum and a PDMS oil, such as the product SF 1236 from the company General Electric. The product SF 1236 is the mixture of an SE 30 gum defined above having a viscosity of 20 m 2 / s and an SF 96 oil with a viscosity of 5 × 10 -6 m 2 / s. This product preferably comprises 15% of SE 30 gum and 85% of an SF 96 oil.

The organopolysiloxane resins used in accordance with the invention are crosslinked siloxane systems containing the units: R 2 SiO 2/2, R 3 SiO 11 2, RSiO 3/2 and SiO 4/2 in which R represents an alkyl having 1 to 16 carbon atoms. Among these products, those that are particularly preferred are those in which R denotes a C1-C4 lower alkyl group, more particularly methyl. Among these resins may be mentioned the product sold under the name "Dow Corning 593" or those sold under the names "Silicone Fluid SS 4230 and SS 4267" by the company General Electric and which are silicones of dimethyl / trimethyl siloxane structure. Mention may also be made of the trimethylsiloxysilicate type resins sold in particular under the names X22-4914, X21-5034 and X21-5037 by the company Shin-Etsu. Among the additional organomodified silicones, mention may be made of polyorganosiloxanes comprising: polyethyleneoxy and / or polypropyleneoxy groups optionally comprising C 6 -C 24 alkyl groups, such as (C 12) alkylmethicone copolyol; substituted or unsubstituted amine groups such as the products sold under the names Q2 8220 and Dow Corning 929 or 939 by the company Dow Corning. The substituted amino groups are, in particular, C1-C4 aminoalkyl groups; alkoxylated groups, such as the product marketed under the name ABIL WAX® 2428, 2434 and 2440 by the company GOLDSCHMIDT. More particularly, the additional fatty substances are chosen from liquid or pasty compounds at room temperature and preferably at atmospheric pressure. Liquid The additional fatty substances are preferably chosen from liquid hydrocarbons, fatty alcohols, fatty acid esters, esters of fatty alcohol, non-silicone vegetable or synthetic oils other than liquid hydrocarbons. Preferably, the additional fatty substances are chosen from liquid hydrocarbons, esters of fatty acids and / or of liquid fatty alcohols, liquid fatty alcohols or mixtures thereof.

The emulsion according to the invention may have an additional fatty substance content ranging from 0.1 to 40% by weight, even more preferably from 0.5 to 25% by weight, better still from 1 to 20% by weight relative to weight of the emulsion. The emulsion of the invention comprises an alkalinizing agent. This agent may be chosen from inorganic or organic or hybrid alkaline agents or mixtures thereof. The inorganic alkaline agent (s) is (are) preferably chosen from ammonia, alkali carbonates or bicarbonates, such as sodium or potassium carbonates and sodium or potassium bicarbonates, sodium or potassium hydroxides, or mixtures thereof. The organic alkaline agent (s) is (are) preferably chosen from organic amines whose pKb at 25 ° C. is less than 12, and preferably less than 10, and even more advantageously less than 6. It should be noted that this is pKb corresponding to the highest basicity function.

As hybrid compounds, mention may be made of the salts of the amines mentioned above with acids such as carbonic acid and hydrochloric acid. The organic alkaline agent (s) are for example chosen from alkanolamines, oxyethylenated and / or oxypropylenated ethylenediamines, amino acids and compounds of the following formula (V): ## STR1 ## in which W is a C1-C6 alkylene residue optionally substituted by a hydroxyl group or a C1-C6 alkyl radical; Rx, Ry, Rz and Rt, identical or different, represent a hydrogen atom, a C1-C6 alkyl or C1-C6 hydroxyalkyl, C1-C6 aminoalkyl radical.

Examples of such amines include 1,3-diaminopropane, 1,3-diaminopropanol, spermine and spermidine. By alkanolamine is meant an organic amine comprising a primary, secondary or tertiary amine function, and one or more linear or branched C1-C8 alkyl groups carrying one or more hydroxyl radicals.

Alkanolamines, such as mono-, di- or trialkanolamines comprising one to three identical or different C1-C4 hydroxyalkyl radicals, are particularly suitable for carrying out the invention.

By way of example, mention may be made of monoethanolamine, diethanolamine, triethanolamine, monoisopropanolamine, diisopropanolamine, N-dimethylaminoethanolamine, 2-amino-2-methyl-1-propanol, triisopropanolamine, 2-amino 2-methyl-1,3-propanediol, 3-amino-1,2-propanediol, 3-dimethylamino-1,2-propanediol, tris-hydroxymethylaminomethane. More particularly, the amino acids that can be used are of natural or synthetic origin, in their L, D, or racemic form, and comprise at least one acid function chosen more particularly from the carboxylic, sulphonic, phosphonic or phosphoric acid functions. Amino acids can be in neutral or ionic form. As amino acids that may be used in the present invention, mention may in particular be made of aspartic acid, glutamic acid, alanine, arginine, ornithine, citrulline, asparagine, carnitine and cysteine. , glutamine, glycine, histidine, lysine, isoleucine, leucine, methionine, N-phenylalanine, proline, serine, taurine, threonine, tryptophan, tyrosine and valine. Advantageously, the amino acids are basic amino acids comprising an additional amine function optionally included in a ring or in a ureido function. Such basic amino acids are preferably chosen from those corresponding to the following formula (VI): embedded image where R denotes a group chosen from: - (CH 2) 2 NHCONH 2 N NHJ - (CH 2) 3 N H 2 The compounds corresponding to formula (VI) are histidine, lysine, arginine, ornithine, citrulline. The organic amine may also be chosen from heterocyclic organic amines. In addition to the histidine already mentioned in the amino acids, mention may in particular be made of pyridine, piperidine, imidazole, triazole, tetrazole and benzimidazole. . The organic amine may also be selected from amino acid dipeptides. As amino acid dipeptides that can be used in the present invention, mention may be made especially of carnosine, anserin and whale. The organic amine is chosen from compounds containing a guanidine function. As amino amines of this type which can be used in the present invention, mention may in addition be made of arginine already mentioned as amino acid, creatine, creatinine, 1,1-dimethylguanidine, 1,1 diethylguanidine, glycocyamine, metformin, agmatine, n-amidinoalanine, 3-guanidinopropionic acid, 4-guanidinobutyric acid and 2 - ([amino (imino) methyl] amino) ethane-1 sulfonic. As hybrid compounds, mention may in particular be made of guanidine carbonate or monoethanolamine hydrochloride.

The emulsion of the invention preferably contains one or more alkanolamines and / or one or more basic amino acids. According to one embodiment, it contains one or more alkanolamines, for example monoethanolamine. According to a particular embodiment, the emulsion contains as alkaline agents at least one organic amine, preferably at least one alkanolamine. When the emulsion contains several alkaline agents including an alkanolamine and ammonia or one of its salts, the organic amine or amines are preferably majority by weight relative to the amount ammonia. According to another embodiment of the present invention, when the emulsion contains ammonia, it also contains one or more alkanolamines, and the amount by weight of alkanolamine (s) in the emulsion is greater than the amount by weight of ammonia in this same composition. According to another preferred embodiment of the present invention, the emulsion does not contain ammonia. Advantageously, the emulsion according to the invention has a content of alkalinizing agent (s), ranging from 0.01 to 30% by weight, preferably from 0.1 to 20% by weight relative to the weight emulsion. According to a particular embodiment, the weight ratio of silicone (s) liquid (s) / alkalinizing agent (s) is preferably greater than or equal to 5, better still greater than or equal to 10. Preferably, this ratio varies from at 40, even more preferably from 10 to 25. According to one variant, the inverse emulsion of the present invention comprises at least one oxidation dye and / or a direct dye.

The oxidation dyes are generally chosen from oxidation bases and couplers. By way of example, the oxidation bases are chosen from para-phenylenediamines, bis-phenylalkylenediamines, para-aminophenols, ortho-aminophenols, heterocyclic bases and their addition salts.

Among the paraphenylenediamines, there may be mentioned, for example, para-phenylenediamine, paratoluylenediamine, 2-chloro-para-phenylenediamine, 2,3-dimethyl-para-phenylenediamine, 2,6-dimethyl paraphenylenediamine, 2,6-diethyl paraphenylenediamine, 2,5-dimethyl-para-phenylenediamine, N, N-dimethyl-para-phenylenediamine, N, N-diethyl-para-phenylenediamine, N, N-dipropyl-para-phenylenediamine, 4-amino-N, N-diethyl-3-methylaniline, N, N- bis- (13-hydroxyethyl) paraphenylenediamine, 4-N, N-bis- (13-hydroxyethyl) amino-2-methylaniline, 4-N, N-bis- (13-hydroxyethyl) amino 2-chloroaniline, 2-13-hydroxyethyl paraphenylenediamine, 2-fluoro-para-phenylenediamine, 2-isopropyl-para-phenylenediamine, N- (13-hydroxypropyl) para-phenylenediamine, 2-hydroxymethyl-para-phenylenediamine, N, N-dimethyl-3-methyl-para-phenylenediamine, N, N - (ethyl, [3-hydroxyethyl) paraphenylenediamine, N- ([3, y-dihydroxypropyl] paraphenylenediamine, N- (4'-aminophenyl) paraphenylenediamine, N-phenyl paraphenylenediamine, 2-13-hydroxyethyloxy paraphenylenediamine, 2-13-acetylaminoethyloxy para-phenylenediamine, N - ((3-methoxyethyl) paraphenylene diamine, 4-aminophenylpyrrolidine, 2-thienyl paraphenylenediamine, 2- (3-hydroxyethylamino-5-amino-toluene, 3-hydroxy-1- (4'-aminophenyl) pyrrolidine and their addition salts with an acid. Of the paraphenylenediamines mentioned above, paraphenylenediamine, paratoluylenediamine, 2-isopropyl paraphenylenediamine, 2-hydroxy-3-hydroxyethyl paraphenylenediamine, 2-hydroxy-hydroxyethyloxy-para-phenylenediamine, 2,6-dimethyl-para-phenylenediamine, 2,6 ethyl paraphenylenediamine, 2,3-dimethyl paraphenylenediamine, N, N-bis- (13-hydroxyethyl) paraphenylenediamine, 2-chloro-para-phenylenediamine, 2-13-acetylaminoethyloxy-para-phenylenediamine, and their addition salts with an acid are particularly preferred.

Among the bis-phenylalkylenediamines, mention may be made, by way of example, of N, N'-bis ((3-hydroxyethyl) N, N'-bis (4'-aminophenyl) -1,3-diamino propanol, N, N'-bis - ([3-hydroxyethyl) N, N'-bis (4'-aminophenyl) ethylenediamine, N, N'-bis- (4-aminophenyl) tetramethylenediamine, N, N'-bis - ([3-hydroxyethyl) N, N'-bis (4-aminophenyl) tetramethylenediamine, N, N'-bis- (4-methylaminophenyl) tetramethylenediamine, N, N'-bis (ethyl) N N, B- (4'-amino, 3'-methylphenyl) ethylenediamine, 1,8-bis (2,5-diamino phenoxy) -3,6-dioxaoctane, and their addition salts. Among para-aminophenols, para-aminophenol, 4-amino-3-methylphenol, 4-amino-3-fluoro phenol, 4-amino-3-chlorophenol, 4-amino-3 are exemplified. -hydroxymethyl phenol, 4-amino-2-methylphenol, 4-amino-2-hydroxymethylphenol, 4-amino-2-methoxymethylphenol, 4-amino-2-aminomethylphenol, 4-amino-2 - ([3- hydroxyethyl aminomethyl) phenol, 4-amino-2-fluoro phenol, and their addition salts with an acid. Among the ortho-aminophenols, mention may be made, for example, of 2-amino phenol, 2-amino-5-methylphenol, 2-amino-6-methylphenol and 5-acetamido-2-aminophenol, and their addition salts. Among the heterocyclic bases that may be mentioned by way of example are pyridine derivatives, pyrimidine derivatives and pyrazole derivatives. Among the pyridine derivatives, mention may be made of the compounds described for example in patents GB 1 026 978 and GB 1 153 196, such as 2,5-diamino pyridine, 2- (4-methoxyphenyl) amino-3-amino pyridine, 3,4-diamino pyridine, and their addition salts. Other pyridinic oxidation bases useful in the present invention are the 3-amino pyrazolo [1,5-a] pyridines oxidation bases or their addition salts described for example in the patent application FR 2801308. By way of example, mention may be made of pyrazolo [1,5-a] pyridin-3-ylamine; 2-acetylamino pyrazolo [1,5-a] pyridin-3-ylamine; 2-morpholin-4-yl-pyrazolo [1,5-a] pyridin-3-ylamine; 3-amino-pyrazolo [1,5-a] pyridin-2-carboxylic acid; 2-methoxy-pyrazolo [1,5-a] pyridin-3-ylamino; (3-amino-pyrazolo [1,5-a] pyridin-7-yl) -methanol; 2- (3-Amino-pyrazolo [1,5-a] pyridin-5-yl) -ethanol; 2- (3-Amino-pyrazolo [1,5-a] pyridin-7-yl) -ethanol; (3-Amino-pyrazolo [1,5-a] pyridin-2-yl) -methanol; 3,6-diaminopyrazolo [1,5-a] pyridine; 3,4-diamino-pyrazolo [1,5-a] pyridine; pyrazolo [1,5-a] pyridine-3,7-diamine; 7-morpholin-4-yl-pyrazolo [1,5-a] pyridin-3-ylamine; pyrazolo [1,5-a] pyridine-3,5-diamine; 5-morpholin-4-yl-pyrazolo [1,5-a] pyridin-3-ylamine; 2 - [(3-amino-pyrazolo [1,5-a] pyridin-5-yl) - (2-hydroxyethyl) amino] ethanol; 2 - [(3-Amino-pyrazolo [1,5-a] pyridin-7-yl) - (2-hydroxyethyl) amino] ethanol; 3-amino-pyrazolo [1,5-a] pyridin-5-ol; 3-amino-pyrazolo [1,5-a] pyridin-4-ol; 3-amino-pyrazolo [1,5-a] pyridin-6-ol; 3-amino-pyrazolo [1,5-a] pyridin-7-ol; as well as their addition salts. Among the pyrimidine derivatives, mention may be made of the compounds described, for example, in DE 2359399; JP 88-169571; JP 05-63124; EP 0770375 or patent application WO 96/15765 such as 2,4,5,6-tetraaminopyrimidine, 4-hydroxy 2,5,6-triaminopyrimidine, 2-hydroxy 4,5,6-triaminopyrimidine, , 4-dihydroxy-5,6-diaminopyrimidine, 2,5,6-triaminopyrimidine and their addition salts and tautomeric forms, when tautomeric equilibrium exists. Among the pyrazole derivatives, mention may be made of the compounds described in DE 3843892, DE 4133957 and patent applications WO 94/08969, WO 94/08970, FR-A-2 733 749 and DE 195 43 988 as the 4.5 1-methyl pyrazole, 4,5-diamino 1 - ([3-hydroxyethyl) pyrazole, 3,4-diamino pyrazole, 4,5-diamino 1- (4'-chlorobenzyl) pyrazole, 4, 5-diamino 1,3-dimethyl pyrazole, 4,5-diamino-3-methyl-1-phenylpyrazole, 4,5-diamino-1-methyl-3-phenylpyrazole, 4-amino-1,3-dimethyl-5-hydrazino pyrazole, 1-benzyl-4,5-diamino-3-methyl-pyrazole, 4,5-diamino-3-tert-butyl-1-methyl-pyrazole, 4,5-diamino-1-tert-butyl-3-methyl-pyrazole, 4 5-diamino 1 - ([3-hydroxyethyl) 3-methylpyrazole, 4,5-diamino-1-ethyl-3-methylpyrazole, 4,5-diamino-1-ethyl-3- (4'-methoxyphenyl) pyrazole, 4,5-diamino-1-ethyl-3-hydroxymethyl pyrazole, 4,5-diamino-3-hydroxymethyl-1-methyl pyrazole, 4,5-diamino-3-hydroxymethyl-1-isopropyl pyrazole, 4,5-diamino-3- mét 1-isopropyl pyrazole, 4-amino-5- (2'-aminoethyl) amino-1,3-dimethyl pyrazole, 3,4,5-triamino pyrazole, 1-methyl-3,4,5-triamino pyrazole, 3,5-diamino-1-methyl-4-methylamino pyrazole, 3,5-diamino 4 - ([3-hydroxyethyl) amino-1-methyl pyrazole, and their addition salts. It is also possible to use 4-5-diamino-1 - ([3-methoxyethyl) pyrazole. Preferably, a 4,5-diaminopyrazole and even more preferably 4,5-diamino-1 - ([3-hydroxyethyl) pyrazole and / or one of its salts will be used. As pyrazole derivatives, mention may also be made of diamino N, N-dihydropyrazolopyrazolones and especially those described in application FR-A-2 886 136 such as the following compounds and their addition salts: 2,3-diamino-6 7-Dihydro-1H, 5H-pyrazolo [1,2-a] pyrazol-1-one, 2-amino-3-ethylamino-6,7-dihydro-2-amino-3-isopropylamino-6,7- 1H-dihydro-5H-2-amino-3- (pyrrolidin-1-yl) -6,7-dihydro-1H, 5H-4,5-diamino-1,2-dimethyl-1,2-dihydro- pyrazol-3-one, 4,5-diamino-1,2-di- (2-1H, 5H-pyrazolo [1,2-a] pyrazol-1-one, pyrazolo [1,2-a] pyrazol) 1-one, pyrazolo [1,2-a] pyrazol-1-one, 4,5-diamino-1,2-diethyl-1,2-dihydro-pyrazol-3-one, hydroxyethyl) -1,2-dihydro pyrazol-3-one, dihydro-1H, 5H-pyrazolo [1,2-a] pyrazol-1-one, 1H, 5H-pyrazolo [1,2-a] pyrazol-1-one, 2-amino -3- (2-amydoxyethyl) amino-6,7-amino-3-dimethylamino-6,7-dihydro-2,3-diamino-5,6,7,8-tetrahydro-1H, 6H pyridazino [1,2-a] pyrazol-1-one, 4-amino-1,2-diethyl-5- (pyrrolidin-1-yl) -1,2-dihydro-pyrazol-3-one, 4-amino -5- (3-dime thylamino-pyrrolidin-1-yl) -1,2-diethyl-1,2-dihydro-pyrazol-3-one, 2,3-diamino-6-hydroxy-6,7-dihydro-1H, 5H-pyrazolo [1 , 2-a] pyrazol-1-one. It is preferred to use 2,3-diamino-6,7-dihydro-1H, 5H-pyrazolo [1,2-a] pyrazol-1-one and / or a salt thereof. As heterocyclic bases, 4,5-diamino-1 - ([3-hydroxyethyl) pyrazole and / or 2,3-diamino-6,7-dihydro-1H, 5H-pyrazolo [1, are preferably used. 2-a] pyrazol-1-one and / or a salt thereof. The emulsion according to the invention may optionally comprise one or more couplers conventionally used for dyeing keratinous fibers. Among these couplers, there may be mentioned meta-phenylenediamines, meta-aminophenols, meta-diphenols, naphthalenic couplers, heterocyclic couplers and their addition salts. By way of example, mention may be made of 1,3-dihydroxybenzene, 1,3-dihydroxy-2-methylbenzene, 4-chloro-1,3-dihydroxybenzene and 2,4-diamino-1- (R- hydroxyethyloxy) benzene, 2-amino 4- (13-hydroxyethylamino) 1-methoxybenzene, 1,3-diamino benzene, 1,3-bis (2,4-diaminophenoxy) propane, 3-ureido aniline, 3-ureido 1-dimethylamino benzene, sesamol, 1-R-hydroxyethylamino-3,4-methylenedioxybenzene, α-naphthol, 2-methyl-1-naphthol, 6-hydroxyindole, 4-hydroxyindole , 4-hydroxy N-methylindole, 2-amino-3-hydroxypyridine, 6-

Hydroxyethylamino) toluene, 6-hydroxyindoline, 2,6-dihydroxy-4-methylpyridine, 1-H-3-methylpyrazole-5-one, 1-phenyl-3-methylpyrazole-5-one, 2,6 dimethyl pyrazolo [1,5-b] -1,2,4-triazole, 2,6-dimethyl [3,2-c] -1,2,4-triazole, 6-methyl-hydroxybenzomorpholine 3, 5-diamino-2,6-dimethoxypyridine, 1-N- (R-hydroxyethyl) amino-3,4-methylene dioxybenzene, 2,6-bis- (R-pyrazolo [1,5-a] benzimidazole, their addition salts with an acid, and mixtures thereof The addition salts of the oxidation bases and the couplers are in particular chosen from the addition salts with an acid such as hydrochlorides, hydrobromides, sulphates, citrates, succinates, tartrates, lactates, tosylates, benzenesulfonates, phosphates and acetates, the oxidation base (s) each represent advantageously from 0.0001 to 10% by weight relative to the total weight of the emulsion, and preferably from 0.005 to 5% by weight per t to the total weight of the emulsion.

The content of the coupler (s), if they are (are) present, is each advantageously from 0.0001 to 10% by weight relative to the total weight of the emulsion, and preferably of 0.005 at 5% by weight relative to the total weight of the emulsion. The direct dyes that may be used are, for example, synthetic or natural dyes chosen from ionic or nonionic species, preferably cationic or nonionic. By way of example of direct dyes, mention may be made of the nitro dyes of the benzene series; azo direct dyes; azomethines; methinic; azacarbocyanines such as tetraazacarbocyanines (tetraazapentamethines); quinone direct dyes and in particular anthraquinone, naphthoquinone or benzoquinone dyes; direct azine dyes; xanthenics; triarylmethanics; indoamines; indigoids; phthalocyanines, porphyrins and natural direct dyes, alone or in mixtures. In particular, mention may be made of azo direct dyes; methinic; carbonyls; azinic; nitro (hetero) aryl; tri- (hetero) aryl methanes; porphyrins; phthalocyanines and natural direct dyes, alone or in mixtures.

Among the benzene direct dyes that may be used according to the invention, the following compounds may be mentioned in a nonlimiting manner: 1,4-diamino-2-nitrobenzene, 1-amino-2-nitro-4-R-hydroxyethylaminobenzene-1-amino -2-nitro-4-bis ([3-hydroxyethyl) -aminobenzene-1,4-bis (R-hydroxyethylamino) -2-nitrobenzene-1-R-hydroxyethylamino-2-nitro-4-bis - ((3-hydroxyethylamino) ) -benzene - 1-R-hydroxyethylamino-2-nitro-4-aminobenzene - 1- [3-hydroxyethylamino-2-nitro-4- (ethyl) (3-hydroxyethyl) -aminobenzene-1-amino-3-methyl- 4- (3-Hydroxyethylamino-6-nitrobenzene-1-amino-2-nitro-4- (3-hydroxyethylamino) -5-chlorobenzene-1,2-diamino-4-nitrobenzene-1-amino-2- (3-hydroxyethyl) amino 5-nitrobenzene-1,2-bis ((3-hydroxyethylamino) -4-nitrobenzene-1-amino-2-tris- (hydroxymethyl) -methylamino-5-nitrobenzene-1-hydroxy-2-amino-5- nitrobenzene - 1-Hydroxy-2-amino-4-nitrobenzene - 1-Hydroxy-3-nitro-4-aminobenzene - 1-Hydroxy-2-amino-4,6-dinitrobenzene - 1 - [3-hydroxyeth yloxy-2- (3-hydroxyethylamino-5-nitrobenzene-1-methoxy-2- (3-hydroxyethylamino-5-nitrobenzene) -1- (3-hydroxyethyloxy-3-methylamino-4-nitrobenzene) -1- (3, dihydroxypropyloxy-3-methylamino-4-nitrobenzene-1- (3-hydroxyethylamino-4- (3-yl) dihydroxypropyloxy-2-nitrobenzene-1- (3-yl) hydroxypropylamino-4-trifluoromethyl-2-nitrobenzene-1 - (3-Hydroxyethylamino-4-trifluoromethyl-2-nitrobenzene-1- (3-hydroxyethylamino-3-methyl-2-nitrobenzene) -1- (3-aminoethylamino) -5-methoxy-2-nitrobenzene-1-hydroxy-2- chloro-6-ethylamino-4-nitrobenzene-1-hydroxy-2-chloro-6-amino-4-nitrobenzene-1-hydroxy-6-bis-((3-hydroxyethyl) -amino-3-nitrobenzene-1- ( 3-hydroxyethylamino-2-nitrobenzene-1-hydroxy-4- (3-hydroxyethylamino-3-nitrobenzene.

Among the azo, azomethine, methine or tetraazapentamethine direct dyes that may be used according to the invention, mention may be made of the cationic dyes described in patent applications WO 95/15144, WO 95/01772 and EP 714954; FR 2189006, FR 2285851, FR-2140205, EP 1378544, EP 1674073.

Thus, all the following dyes of formulas (I) to (IV), and preferably the compounds of formulas (I), (II), (III) and (III '), may be mentioned in particular: ~ 3 21 RAD = DN In which: D represents a nitrogen atom or the -CH group, preferably a nitrogen atom, R, and R2, which may be identical or different, represent a hydrogen atom; a C 1 -C 4 alkyl radical which may be substituted with a -CN, -OH or -NH 2 radical or form, with a carbon atom of the benzene ring, an optionally oxygenated or nitrogenous heterocycle, which may be substituted by one or more C 1 -C 4 alkyl radicals; C4; a 4'-aminophenyl radical, R3 and R'3, which may be identical or different, represent a hydrogen or halogen atom chosen from chlorine, bromine, iodine and fluorine, a cyano radical, a C1-C6 alkyl radical or C4-C 1-4 alkoxy or acetyloxy, X - represents an anion preferably selected from chloride, methyl sulfate and acetate, A represents a group chosen from structures Al to A18, and preferably Al, A4, A7, A13 and A18, as follows: R4 NN + + R4 R4 A2

R4 R4 N-N + +/- \ N - N \\ + R4 N \ / R4 N N R4 A4 A5 A6 A8 R4 A9 A10 A11 Al2 / R, / R, IN + NN +

Embedded image in which R 4 represents a C 1 -C 4 alkyl radical which may be substituted with a hydroxyl radical and R 5 represents a radical with a radical of R 4, R 4 C1-C4 alkoxy; Wherein R 6 represents a hydrogen atom or a C 1 -C 4 alkyl radical, R 4 represents a hydrogen atom, an alkyl radical which may be substituted by a -CN radical or by an amino group, a 4'-aminophenyl radical or forms with R 6 an optionally oxygenated and / or nitrogenous heterocycle which may be substituted with a C 1 -C 4 alkyl radical, R 8 and R 9, which may be identical or different, represent a hydrogen atom, a halogen atom such bromine, chlorine, iodine or fluorine, a C1-C4 alkyl or C1-C4 alkoxy radical, a -CN, X- radical represents an anion preferably chosen from chloride, methyl sulphate and acetate, B represents a group chosen by the following structures B1 to B6: (H) R6 / N

Wherein R 10 represents a C 1 -C 4 alkyl radical, R 11 and R 12, which may be identical or different, hydrogen or a C1-C4 alkyl radical; R 14 E-D 1 = D 2 - (N), X R 15 (III) in which: R 13 represents a hydrogen atom, a C 1 -C 4 alkoxy radical, a halogen atom such as bromine, chlorine, iodine or fluorine, R14 represents a hydrogen atom, a C1-C4 alkyl radical or forms, with a carbon atom of the benzene ring, an optionally oxygenated heterocycle and / or substituted by one or more C1-C4 alkyl groups; R15 represents a hydrogen or halogen atom such that bromine, chlorine, iodine or fluorine, R16 and R17, which may be identical or different, represent a hydrogen atom or a C1-C4 alkyl radical; , D1 and D2, which may be identical or different, represent a nitrogen atom or the group -CH, m = 0 or 1, it being understood that when R13 represents an unsubstituted amino group, then D1 and D2 simultaneously represent a -CH group and m = 0.5 X - represents an anion preferably selected from chloride, methyl sulfate and acetate, E represents a n group chosen by the structures E1 to E8, and preferably E1, E2 and E7, as follows: ## STR3 ##

NO + and N + N R 'R' E7 E8 wherein R 'represents a C1-C4 alkyl radical;

when m = 0 and D, represents a nitrogen atom, then E can also denote a group of the following structure E9: R '

E9 N + 1 R 'wherein R' represents a C1-C4 alkyl radical. In which:

the symbol G represents a group chosen from the following structures G, to G3: E6 N R s N + R21 N +

Wherein R18 denotes a C1-C4 alkyl radical, a phenyl radical which may be substituted by a C1-C4 alkyl radical or a halogen atom chosen from chlorine. X-X-R18 Re G1 G2 Gs bromine, iodine and fluorine; R19 denotes a C1-C4 alkyl radical or a phenyl radical; R20 and R21, which may be identical or different, represent a C1-C4 alkyl radical or a phenyl radical, or together form in G1 a benzene ring substituted with one or more C1-C4 alkyl, C1-C4 alkoxy or NO2 radicals, or together form in G2 a benzene ring optionally substituted with one or more C1-C4 alkyl, C1-C4 alkoxy or NO2 radicals; R20 may further denote a hydrogen atom; Z is an oxygen atom, sulfur atom or a group -NR19; M represents a group -CH, -CR (R denoting C1-C4 alkyl), or -NR22 (X-) r; K represents a group -CH, -CR (R denoting C1-C4 alkyl), or -NR22 (X-) r; P represents a group -CH, -CR (R denoting C1-C4 alkyl), or -NR22 (X-) r; r is zero or 1; R22 represents an O atom, a C1-C4 alkoxy radical, or a C1-C4 alkyl radical; R23 and R24, which may be identical or different, represent a hydrogen or halogen atom chosen from chlorine, bromine, iodine and fluorine, a C1-C4 alkyl radical or a C1-C4 alkoxy radical; NO2; X represents an anion preferably selected from chloride, iodide, methyl sulfate, ethyl sulfate, acetate and perchlorate; with the proviso that, if R22 is O, then r is zero; if K or P or M denote -N-alkyl C1-C4 X, then R23 or R24 is different from a hydrogen atom; if K denotes -NR22 (X-) r, then M = P = -CH, -CR; if M denotes -NR22 (X-) r, then K = P = -CH, -CR; if P denotes -NR22 (X-) r, then K = M and denote -CH or -CR; if Z denotes a sulfur atom with R 21 denoting C 1 -C 4 alkyl, then R 20 is different from a hydrogen atom; if Z denotes -NR22 with R19 denoting C1-C4 alkyl, then at least one of the radicals R18, R20 or R21 of the group of structure G2 is different from a C1-C4 alkyl radical; the symbol J represents: - (a) a group of structure J1 following: structure J1 in which, R25 represents a hydrogen atom, a halogen atom chosen from chlorine, bromine, iodine and fluorine, C1-C4alkyl, C1-C4alkoxy, -OH, -NO2, -NHR28, -NR29R30, -NHCO C1-C4alkyl, or form with R26 a 5- or 6-membered ring containing or not a or more heteroatoms selected from nitrogen, oxygen or sulfur; R 26 represents a hydrogen atom, a halogen atom selected from chlorine, bromine, iodine and fluorine, a C1-C4 alkyl radical, C1-C4 alkoxy radical, or forms with R27 or R28 a 5- or 6-membered ring containing or not one or more heteroatoms selected from nitrogen, oxygen or sulfur; R27 is hydrogen, -OH, -NHR28, -N R29R30; R28 represents a hydrogen atom, a C1-C4 alkyl radical, a C1-C4 monohydroxyalkyl radical, a C2-C4 polyhydroxyalkyl radical, a phenyl radical; R29 and R30, which may be identical or different, represent a C1-C4 alkyl radical, a C1-C4 monohydroxyalkyl radical or a C2-C4 polyhydroxyalkyl radical;

(B) a 5- or 6-membered nitrogenous heterocyclic group capable of containing other heteroatoms and / or carbonyl groups and which may be substituted by one or more C1-C4 alkyl, amino or phenyl radicals, and in particular a grouping with the following structure J2: / R3, MiN (U) n J2 N

o R32 structure J2 in which,

R31 and R32, which may be identical or different, represent a hydrogen atom, a C1-C4 alkyl radical or a phenyl radical; CH 3 Y denotes the radical -CO- or the radical ùC =;

n = 0 or 1, with, when n denotes 1, U denotes the -CO- radical. In the structures (I) to (IV) defined above, the alkyl or (C 1 -C 4) alkoxy group preferably denotes methyl, ethyl, butyl, methoxy, ethoxy. The compounds of formulas (I) and (III) are the following compounds: ## STR2 ## The following dyes, described in COLOR INDEX INTERNATIONAL 3e, may also be mentioned among the azo direct dyes: ## STR1 ## ## STR2 ## ## STR2 ## ## STR2 ## edition: 20 - Disperse Red 17 - Basic Red 2215 - Basic Red 76 - Basic Yellow 57 - Basic Brown 16 - Basic Brown 17 - Disperse Black 9. 1- (4'-Aminodiphenylazo) -2-methyl- 4bis- (13-hydroxyethyl) aminobenzene. Among the quinone direct dyes are the following dyes: - Disperse Red 15 - Solvent Violet 13 - Disperse Violet 1 - Disperse Violet 4 - Disperse Blue 1 - Disperse Violet 8 - Disperse Blue 3 - Disperse Red 11 - Disperse Blue 7 - Basic Blue 22 - Disperse Violet 15 - Basic Blue 99 as well as the following compounds: - 1-N-methylmorpholiniumpropylamino-4-hydroxyanthraquinone - 1-Aminopropylamino-4-methylaminoanthraquinone - 1-Aminopropylaminoanthraquinone - 5- (3-hydroxyethyl-1,4- diaminoanthraquinone - 2-aminoethylaminoanthraquinone - 1,4-bis - ((3, y-dihydroxypropylamino) -anthraquinone Among the azine dyes, mention may be made of the following compounds: - Basic Blue 17 - Basic Red 2. Among the triarylmethane dyes that can be used according to the invention can be made of the following compounds: - Basic Green 1 - Basic Purple 3 - Basic Purple 14 - Basic Blue 7 - Basic Blue 26 Among the indoamine dyes that may be used according to the invention, mention may be made of the compounds 2- [3-Hydroxyethylamino-5- [bis- ([3-4'-hydroxyethyl) amino] anilino-1,4-benzoquinone - 2- [3-hydroxyethylamino-5- (2'-methoxy) -4- amino) 1,4-anilino-benzoquinone-3-N (2'-chloro-4'-hydroxy) phenyl-acetylamino-6-methoxy-1,4-benzoquinone imine-3-N (3'-chloro) 4'-methylamino) phenylureido-6-methyl-1,4-benzoquinone imine-3- [4'-N- (ethyl, carbamylmethyl) -amino] -phenyl-ureido-6-methyl-1,4-benzoquinone imine. Among the tetraazapentamethine type dyes that may be used according to the invention, the following compounds appearing in the table below may be mentioned: embedded image 1 \ 1 \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ N \ N + N + N + OH represents an anion preferably selected from chloride, iodide, methyl sulfate, ethyl sulfate, acetate and perchlorate.

Among the natural direct dyes that may be used according to the invention, lawsone, juglone, alizarin, purpurine, carminic acid, kermesic acid, purpurogalline, protocatechaldehyde, indigo, isatin , curcumin, spinulosin, apigenidine, hematoxylin, hematein, brasiline, brasiline, orceins. It is also possible to use the extracts or decoctions containing these natural dyes, and in particular poultices or extracts made from henna.

The direct dyes may be monochromophoric dyes (that is to say comprising only one dye) or polychromophoric dyes, preferably di- or tri-chromophoric dyes; the chromophores which may be identical or different, of the same chemical family or not. It should be noted that a polychromophoric dye comprises several radicals each derived from an absorbing molecule in the visible range between 400 and 800 nm. In addition, this absorbance of the dye does not require any prior oxidation thereof, or association with other (s) species (s) chemical (s). In the case of polychromophoric dyes, the chromophores are connected to each other by means of at least one linker which may or may not be cationic.

Preferably, the linker is a linear, branched or cyclic C1-C20 alkyl chain, optionally interrupted by at least one heteroatom (such as nitrogen, oxygen) and / or by at least one group comprising (CO, SO2), optionally interrupted by at least one heterocyclic ring which may or may not be condensed with a phenyl ring and comprising at least one quaternized nitrogen atom engaged in said ring and optionally at least one other heteroatom (such as oxygen, nitrogen or sulfur), optionally interrupted by at least one phenyl or substituted or unsubstituted naphthyl group, optionally interrupted by at least one quaternary ammonium group substituted by two optionally substituted C1-C15 alkyl groups; the linking arm does not comprise a nitro, nitroso or peroxo group. If the heterocycles or aromatic rings (phenyl or naphthyl) are substituted, they are, for example, with one or more C 1 -C 4 alkyl radicals optionally substituted with a hydroxyl, C 1 -C 2 alkoxy or C 2 -C 4 hydroxyalkoxy or acetylamino group. amino substituted with one or two C1-C4 alkyl radicals, optionally bearing at least one hydroxyl group or both radicals which can form, with the nitrogen atom to which they are attached, a 5- or 6-membered heterocycle, comprising optionally another heteroatom identical or different from the nitrogen; a halogen atom; a hydroxyl group; a C1-C2 alkoxy radical; a C2-C4 hydroxyalkoxy radical; an amino radical; an amino radical substituted with one or two identical or different C 1 -C 4 alkyl radicals optionally bearing at least one hydroxyl group. Among the polychromophoric dyes, mention may be made more particularly of azo and / or azomethine (hydrazonic) di- or trichromophoric dyes, symmetrical or not, comprising on the one hand at least one aromatic heterocycle comprising 5 or 6 ring members, optionally fused, comprising at least one quaternized nitrogen atom engaged in said heterocycle and optionally at least one other heteroatom (such as nitrogen, sulfur, oxygen), and on the other hand, at least one phenyl or naphthyl group, optionally substituted, optionally bearing at least one OR group with R representing a hydrogen atom, an optionally substituted C1-C6 alkyl radical, an optionally substituted phenyl ring, or at least one N (R ') 2 group with R 'identical or not, representing a hydrogen atom, an optionally substituted alkyl radical C1-C6, an optionally substituted phenyl ring; the radicals R 'which can form, with the nitrogen atom to which they are bonded, a saturated 5- or 6-membered heterocycle, or else one and / or both radicals R' may each form with the carbon atom of the aromatic ring placed in ortho of the nitrogen atom, a 5- or 6-membered saturated heterocycle.

As aromatic cationic heterocycle, there may be mentioned, preferably, 5- or 6-membered rings comprising 1 to 3 nitrogen atoms, preferably 1 or 2 nitrogen atoms, one being quaternized; said heterocycle being optionally further fused to a benzene ring. It should also be noted that the heterocycle may optionally comprise another heteroatom different from nitrogen, such as sulfur or oxygen. The link between the linker as defined above and each chromophore is generally by means of a heteroatom substituting the phenyl or naphthyl ring or by means of the quaternized nitrogen atom of the cationic heterocycle. The dye may comprise identical or different chromophores. By way of examples of such dyes, reference may especially be made to the patent applications EP 1637566, EP 1619221, EP 1634926, EP 1619220, EP 1672033, EP 1671954, EP 1671955, EP 1679312, EP 1671951, EP167952, EP167971, WO 06/063866, WO 06/063867, WO 06/063868, WO 06/063869, EP 1408919, EP 1377264, EP 1377262, EP 1377261, EP 1377263, EP 1399425, EP 1399117, EP 1416909, EP 1399116, EP 1671560. can also also use cationic direct dyes cited in applications EP 1006153, which describes dyes comprising two anthraquinone chromophores connected by means of a cationic linker; EP 1433472, EP 1433474, EP 1433471 and EP 1433473 which describe identical or different dichromophoric dyes, connected by a cationic or non-cationic linking arm, as well as EP 6291333 which describes in particular dyes comprising three chromophores, one of them being an anthraquinone chromophore to which are connected two azo-type chromophores or diazacarbocyanine or one of its isomers. When present, the direct dye (s) more particularly represent from 0.0001 to 10% by weight of the total weight of the emulsion, and preferably from 0.005 to 5% by weight. The emulsion of the invention generally comprises one or more surfactants. Preferably, the surfactant or surfactants are chosen from nonionic surfactants or from anionic surfactants. The anionic surfactants are more especially chosen from salts (in particular salts of alkali metals, in particular of sodium, ammonium salts, amine salts, salts of aminoalcohols or salts of alkaline-earth metals such as magnesium) of the following compounds alkyl sulphates, alkyl ether sulphates, alkyl amido ether sulphates, alkyl aryl polyether sulphates, monoglyceride sulphates; alkylsulfonates, alkylamidesulfonates, alkylarylsulfonates, α-olefinsulfonates, paraffin-sulfonates; alkylphosphates, alkyl ether phosphates; alkylsulfosuccinates, alkylethersulfosuccinates, alkylamide-sulfosuccinates; alkylsulfosuccinamates; alkylsulfoacetates; acylsarcosinates; acylisethionates and N-acyltaurates; salts of fatty acids such as oleic, ricinoleic, palmitic or stearic acids, coconut oil acid or hydrogenated coconut oil acid; salts of alkyl D galactoside uronic acids; acyl lactylates; salts of polyoxyalkylenated alkyl ether carboxylic acids, polyoxyalkylenated alkylarylether carboxylic acids, polyoxyalkylenated alkylamidoether carboxylic acids, in particular those containing from 2 to 50 ethylene oxide groups; - and their mixtures. It should be noted that the alkyl or acyl radical of these various compounds advantageously comprises from 6 to 24 carbon atoms, and preferably from 8 to 24 carbon atoms, and the aryl radical preferably denotes a phenyl or benzyl group. The nonionic surfactants are more particularly chosen from mono or polyoxyalkylenated, mono- or polyglycerolated nonionic surfactants. The oxyalkylenated units are more particularly oxyethylenated units, oxypropylene, or their combination, preferably oxyethylenated.

By way of examples of oxyalkylenated nonionic surfactants, mention may be made of: • oxyalkylenated (C 8 -C 24) alkyl phenols, • linear or branched, oxyalkylenated C 8 -C 30 saturated or non-saturated alcohols, • C 8 amides, -C30, saturated or unsaturated, linear or branched, oxyalkylenated, • esters of C8-C30 acids, saturated or unsaturated, linear or branched, and of polyethylene glycols, • esters of C8-C30 acids, saturated or unsaturated , linear or branched, and polyoxyethylenated sorbitol, • oxyethylenated vegetable oils, saturated or unsaturated, surfactants have a number of moles of ethylene oxide and / or propylenede preferably from 1 to 100, more preferably 2 at 50 and preferably from 2 to 30. According to a preferred embodiment of the invention, the oxyalkylenated nonionic surfactants are chosen from oxyethylenated C 8 -C 30 alcohols comprising from 1 to 100 moles of ethylene oxide. . By way of example of mono- or poly-glycerolated nonionic surfactants, the C 8 -C 40 mono- or polyglycerolated alcohols are preferably used. In particular, mono- or poly-glycerolated C 8 -C 40 alcohols correspond to the following formula: ## STR2 ## in which R represents a linear or branched C 8 -C 8 alkyl or alkenyl radical; -C40, preferably C8-C30, and m represents a number ranging from 1 to 30 and preferably from 1 to 10.

By way of example of suitable compounds in the context of the invention, mention may be made of lauryl alcohol with 4 moles of glycerol (INCI name: POLYGLYCERYL-4 LAURYL ETHER), lauric alcohol with 1.5 moles of glycerol, oleic alcohol with 4 moles of glycerol (INCI name: POLYGLYCERYL-4 OLEYL ETHER), oleic alcohol with 2 moles of glycerol (INCI name: POLYGLYCERYL-2 OLEYL ETHER), cetearyl alcohol with 2 moles of glycerol, cetearyl alcohol with 6 moles of glycerol, oleocetyl alcohol with 6 moles of glycerol, and octadecanol with 6 moles of glycerol. The alcohol can be a mixture of alcohols in the same way that the value of m represents a statistical value, which means that in a commercial product several species of polyglycerolated fatty alcohols can coexist as a mixture. Among the mono- or poly-glycerolated alcohols, it is more particularly preferred to use the C 8 / C alcohol, to one mole of glycerol, the C 10 / C 12 alcohol with 1 mole of glycerol and the C 12 alcohol. , 5 moles of glycerol. Preferably, the surfactant is a nonionic surfactant.

The content of surfactants in the emulsion is more particularly from 0.1 to 50% by weight, preferably from 0.5 to 30% by weight relative to the weight of the emulsion. The emulsion may also contain various adjuvants conventionally used in compositions for dyeing or lightening the hair, such as anionic, cationic, nonionic, amphoteric or zwitterionic polymers, or mixtures thereof; antioxidants; penetrants; sequestering agents; perfumes ; dispersants; film-forming agents; preservatives; opacifying agents.

The adjuvants above are generally present in an amount for each of them between 0.01 and 20% by weight relative to the weight of the emulsion. The emulsion may comprise one or more pyrogenic silicas. The fumed silicas can be obtained by high temperature hydrolysis of a volatile silicon compound in an oxyhydrogen flame, producing a finely divided silica. This process makes it possible in particular to obtain hydrophilic silicas which have a large number of silanol groups on their surface. Such hydrophilic silicas are, for example, sold under the names "AEROSIL 130®", "AEROSIL 200®", "AEROSIL 255®", "AEROSIL 300®", "AEROSIL 380®" by the company Degussa, "CAB-O- SIL HS-5® "," CAB-O-SIL EH-5® "," CAB-O-SIL LM-130® "," CAB-O-SIL MS-55® "," CAB-O-SIL M -5® "by the company Cabot. It is possible to chemically modify the surface of the silica by chemical reaction in order to reduce the number of silanol groups. In particular, it is possible to substitute silanol groups with hydrophobic groups: a hydrophobic silica is then obtained. The hydrophobic groups may be: trimethylsiloxyl groups, which are especially obtained by treatment of fumed silica in the presence of hexamethyldisilazane. Silicas thus treated are called "silica silylate" according to the CTFA (6th edition, 1995). They are for example sold under the references "AEROSIL R812®" by the company Degussa, "CAB-O-SIL TS-530®" by Cabot. - Dimethylsilyloxyl or polydimethylsiloxane groups, which are obtained in particular by treatment of fumed silica in the presence of polydimethylsiloxane or dimethyldichlorosilane. Silicas thus treated are called "Silica dimethyl silylate" according to the CTFA (6th edition, 1995). They are for example sold under the references "AEROSIL R972®", "AEROSIL R974®" by the company Degussa, "CAB-O-SIL TS-610®", "CAB-O-SIL TS-720®" by the company Pooch.

The fumed silica preferably has a particle size that may be nanometric to micrometric, for example ranging from about 5 to 200 nm. When present, the fumed silica represents from 1 to 30% by weight relative to the weight of the emulsion.

The emulsion may also include one or more organic thickeners. These thickening agents may be chosen from fatty acid amides (diethanol or coconut monoethanol amide, oxyethylenated alkyl ether carboxylic acid monoethanolamide), polymeric thickeners such as cellulosic thickeners (hydroxyethylcellulose, hydroxypropylcellulose, carboxymethylcellulose) or guar gum and its derivatives (hydroxypropylguar), The content of organic thickening agent (s), if present, usually ranges from 0.01% to 20% by weight, based on the weight of the emulsion, preferably from 0.1 to 5% by weight.

The emulsion of the invention comprises water and optionally one or more organic solvents. As organic solvent, there may be mentioned for example linear or branched monoalcohols, preferably saturated, comprising 2 to 6 carbon atoms, such as ethyl alcohol, isopropyl alcohol; aromatic alcohols such as benzyl alcohol, phenylethyl alcohol; ; polyols with more than two hydroxyl functions such as glycerol; polyol ethers such as, for example, ethylene glycol monomethyl, monoethyl and monobutyl ethers, propylene glycol or its ethers such as, for example, propylene glycol monomethyl ether; and the alkyl ethers of diethylene glycol, especially C1-C4, for example diethylene glycol monoethyl ether or monobutyl ether, alone or as a mixture. The organic solvents, when they are present, generally represent between 1 and 40% by weight relative to the total weight of the emulsion, and preferably between 5 and 30% by weight relative to the total weight of the emulsion.

Alternatively, the water concentration may vary from 5 to 70%, more preferably 10 to 50% of the total weight of the emulsion. In another variant, the concentration of the aqueous phase comprising water and the compounds which are soluble in water at ambient temperature and at atmospheric pressure may vary from 10 to 70%, better still from 15 to 50% of the total weight of the water. 'emulsion.

The emulsion according to the invention may be in various forms, such as in the form of liquids, milks, creams, or in any other form suitable for dyeing keratinous fibers, and especially human hair.

Preferably, the emulsion is in the form of a milk or a cream. The pH of the emulsion according to the invention and / or its aqueous phase is advantageously between 3 and 12, preferably between 5 and 11. Preferably between 7 and 11 inclusive. It can be adjusted to the desired value by means of acidifying or basifying agents usually used for dyeing keratinous fibers. The alkalinizing agents are, for example, those described above. Acidifying agents include, for example, inorganic or organic acids such as hydrochloric acid, orthophosphoric acid, carboxylic acids such as tartaric acid, citric acid, acid lactic acid, or sulfonic acids. The inverse emulsion of the invention is preferably used in admixture with an oxidizing composition. The oxidizing composition comprises one or more oxidizing agents. The oxidizing agent (s) is (are) preferably selected from the group consisting of hydrogen peroxide, urea peroxide, alkali metal bromates or ferricyanides, persalts such as perborates and persulfates. It is also possible to use one or more oxidation-reduction enzymes such as laccases, peroxidases and 2-electron oxidoreductases (such as uricase) as oxidizing agent, if appropriate in the presence of their respective donor or cofactor. Hydrogen peroxide is preferred. The oxidizing composition is preferably an aqueous composition. In particular, it comprises more than 5% by weight of water, preferably more than 10% by weight of water, and even more advantageously more than 20% by weight of water. It may also comprise one or more organic solvents chosen from those listed previously; the latter more particularly, when present, from 1 to 40% by weight relative to the weight of the oxidizing composition, and preferably from 5 to 30% by weight. The oxidizing composition also preferably comprises one or more acidifying agents. Among the acidifying agents, mention may be made, for example, of mineral or organic acids such as hydrochloric acid, orthophosphoric acid, sulfuric acid, carboxylic acids such as acetic acid, tartaric acid citric acid, lactic acid, sulphonic acids. Usually, the pH of the oxidizing composition, when it is aqueous, is less than 7. Preferably, the oxidizing composition comprises hydrogen peroxide as oxidizing agent, in aqueous solution, the concentration of which varies, more particularly , from 0.1 to 50%, more particularly between 0.5 and 20%, and even more preferably between 1 and 15% by weight relative to the weight of the oxidizing composition. Preferably, the mixture of the inverse emulsion of the invention and the oxidizing composition is a direct oil-in-water emulsion (HIE). This mixture is preferably carried out extemporaneously that is to say before its application on human keratin fibers, dry or wet.

After a pause ranging from one minute to one hour, preferably from 5 minutes to 30 minutes, the human keratin fibers are optionally rinsed with water, optionally washed with a shampoo followed by rinsing with water. water, before being dried or allowed to dry. The mixture can be made on hair by successively applying and optionally shifted and without intermediate rinsing the W / O emulsion of the invention and the oxidizing composition. The order of application is indifferent. The exposure time of each of the two compositions can usually vary from one minute to one hour, preferably from 5 minutes to 30 minutes. At the end of the treatment, as in the previous case, human keratinous fibers are optionally rinsed with water, optionally washed with a shampoo followed by rinsing with water, before being dried or allowed to dry. . The temperature during the two processes described above is typically between room temperature (between 15 and 25 ° C) and 80 ° C, preferably between room temperature and 60 ° C.

According to a particular embodiment, after mixing between the emulsion of the invention and the oxidizing agent, the amount of fatty substance in the ready-to-use composition is preferably at least 20% by weight of the total weight the ready-to-use composition, preferably at least 30%.

The invention also relates to a device with two compartments containing in one, an W / O emulsion as described above, in the other, a composition comprising one or more oxidizing agents. The following examples serve to illustrate the invention without being limiting in nature. EXAMPLES EXAMPLE 1 The following emulsions 1A and 1B are prepared according to the invention (the amounts are expressed in g%) EMULSION 1A EMULSION 1B SULFATE OF N, N-BIS (2-HYDROXYETHYL) -P-0.124 0.124 PHENYLENEDIAMINE, 1 H2O 2-METHYL-1,3-DIHYDROXYBENZENE (2- 0,276 0,276 METHYLRESORCINOL) 1-BETA-HYDROXYETHYLOXY-2,4-DIAMINO-BENZENE 0.0138 0.0138 DICHLORHYDRATE 1,3-DIHYDROXYBENZENE (RESORCINOL) 0.414 0.414 1-METHYL -2,5-DIAMINO-BENZENE 0.744 0.744 1-HYDROXY-3-AMINO-BENZENE 0.124 0.124 ETHYL ALCOHOL 3 3 MONOETHANOLAMINE 4.5 4.5 HYDROXYETHYL CELLULOSE (MW: 1.300.000) 0.44 0.44 T.BUTYL HYDROQUINONE 0.09 0.09 CYCLOHEXASILOXANE 48 - LINEAR POLY DIMETHYLSILOXANE (VISCOSITY: 10 CST) - 48 OLEIC ALCOHOL OXYETHYLENE (10 0E) 6 6 SODIUM METABISULFITE 0.245 0.245 ACETYLENE DIETHYLENE DIAMINE TETRACETIC, SALT 0.26 0.26 TETRASODIC OCTYL- 2 DODECANOL 9 9 GLYCEROL 4.3 4.3 WATER QSP 100 QSP 100 The oxidizing composition (composition 2) Composition 2 DIETHYLENE DIAMINE TETRACETIC ACID, SALT 0.11 TETRASODIC HYDROGEN PEROXIDE (50% AQUEOUS SOLID) 12 SODIUM STANNATE 0.04 TETRASODIC PYROPHOSPHATE 0.03 POLYCONDENSATE TETRAMETHYL 0.1 HEXAMETHYLENEDIAMINE / DICHLORO1,3-PROPYLENE (AQUEOUS 40% SOLUTION; HEXADIMETHRIN CHLORIDE) CHLORIDE OF POLYDIMETHYL DIALLYL AMMONIUM 0.2 (AQUEOUS 40% SOLUTION, POLYQUATERNIUM-6) GLYCEROL 0.5 CETYLSTEARYL ALCOHOL 8 CETYLSTEARYL ALCOHOL OXYETHYLENE (33 0E) 1.4 AMIDE COLZA ACID OXYETHYLENE (40E) 1.3 VITAMIN E: DL-a-TOCOPHEROL 0.1 PHOSPHORIC ACID Qs pH 2.2 WATER Qs 100 Application method Emulsions 1A and 1B are mixed weight for weight with composition 2 at the time of use.

The resulting mixtures are then applied to locks of natural hair gray to 90% white, at a rate of 10 g of mixture per 1 g of hair. The mixtures are allowed to stand at room temperature for 30 minutes. The hair is then rinsed, washed with standard shampoo and dried.

In both cases we obtain brown locks.

EXAMPLE 2 The following emulsions 3A and 3B are prepared according to the invention (the amounts are expressed in g%) EMULSION 3A EMULSION 3B ETHYL ALCOHOL 3 3 MONOETHANOLAMINE 4,5 4,5 HYDROXYETHYL CELLULOSE (MW: 1,300,000) 0.44 0.44 T.BUTYL HYDROQUINONE 0.09 0.09 CYCLOHEXASILOXANE 48 - LINEAR POLY DIMETHYLSILOXANE (VISCOSITY: 10 CST) - 48 OLEIC ALCOHOL OXYETHYLENE (10 0E) 6 6 SODIUM METABISULFITE 0.245 0.245 DIETHYLENE DIAMINE TETRACETIC ACID, SALT 0.26 0.26 TETRASODIC OCTYL-2 DODECANOL 9 9 GLYCEROL 4.3 4.3 WATER QSP 100 QSP 100 Method of Application The emulsions 3A and 3B above are mixed weight for weight at the time of use with the oxidizing composition 2 The resulting mixtures are then applied to strands of natural brown hair, at the rate of 10 g of mixture per 1 g of hair. The mixtures are allowed to stand at room temperature for 30 minutes. The hair is then rinsed, washed with standard shampoo and dried. In both cases, dark bond locks are obtained, which indicates a powerful lightening effect.

Claims (18)

REVENDICATIONS1. Water-in-oil inverse emulsion comprising: (a) at least 30% by weight of one or more fatty substances selected from liquid silicones; (b) one or more basifying agents. 10 2. Emulsion according to the preceding claim, characterized in that the liquid silicone or silicones are chosen from: - liquid polydialkylsiloxanes, in particular liquid polydimethylsiloxanes (PDMS), -the liquid polyorganosiloxanes comprising at least one aryl group, -organomodified silicones liquids 3. Emulsion according to claims 1 or 2, characterized in that the liquid polydialkylsiloxane (s) are chosen from: cyclic polydialkylsiloxanes comprising from 3 to 7, preferably from 4 to 5, silicon atoms, linear linear polydialkylsiloxanes having 2 to 9 silicon atoms - non-volatile liquid polydialkylsiloxanes. 25 4. Emulsion according to claims 1 or 2, characterized in that the one or more liquid polyorganosiloxanes comprising at least one aryl group are chosen from polydiaryl siloxanes, especially polydiphenylsiloxanes, and polyalkyl-arylsiloxanes. 30 5. Emulsion according to claims 1 or 2, characterized in that the liquid or organomodified silicones are chosen from silicones possessing polyethyleneoxy and / or polypropyleneoxy groups. 6. Emulsion according to any one of the preceding claims, characterized in that the concentration of liquid silicones ranges from 30% to 90%, preferably from 30 to 75%, more preferably from 30 to 60%, more preferably from 30 to 55%, even better from 35 to 55% relative to the total weight of the emulsion. 7. Emulsion according to any one of the preceding claims, characterized in that it contains one or more additional fatty substances selected from hydrocarbons, fatty alcohols, fatty acid esters, fatty alcohol esters, non-silicone vegetable oils. or synthetics other than hydrocabures and preferably from liquid hydrocarbons, esters of fatty acids and / or of liquid fatty alcohols, liquid fatty alcohols or mixtures thereof. 8. Emulsion according to any one of claims 6 and 7, characterized in that the additional fatty substance content ranges from 0.1 to 40% by weight, more preferably from 0.5 to 25% by weight, more preferably 1 to 20% by weight relative to the weight of the emulsion. 9. Emulsion according to any one of the preceding claims, characterized in that it comprises one or more oxidation dyes chosen from one or more oxidation bases selected from para-phenylenediamines, bis-phenylalkylenediamines, para-aminophenols, orthoaminophenols, heterocyclic bases and their addition salts and one or more couplers chosen from meta-phenylenediamines, meta-aminophenols, meta-diphenols, naphthalenic couplers, heterocyclic couplers and their addition salts. 10. Emulsion according to any one of the preceding claims, characterized in that it comprises one or more direct dyes chosen from ionic or nonionic dyes, azo; methinic; carbonyls; azinic; nitro (hetero) aryl; tri- (hetero) aryl methanes; porphyrins; phthalocyanines and natural direct dyes, alone or in mixtures. 11. Emulsion according to any one of the preceding claims, characterized in that it comprises as alkalinizing agents one or more compounds selected from inorganic alkaline agents such as ammonia, alkali carbonates or bicarbonates, sodium hydroxides. or potassium, the organic alkaline agents such as organic amines whose pKb at 25 ° C is less than 12, and preferably less than 10, more preferably less than 6, and the hybrid alkaline agents such as the salts of the amines mentioned above with acids like carbonic acid, hydrochloric acid. 12. Emulsion according to the preceding claim, characterized in that the organic amine is an alkanolamine, a basic amino acid, preferably monoethanolamine. 13. Emulsion according to any one of the preceding claims, characterized in that it comprises one or more surfactants, preferably selected from nonionic surfactants or from anionic surfactants, and even more preferably from nonionic surfactants. 14. Emulsion according to the preceding claim, characterized in that the one or more fatty substances do not contain a carboxylic acid function. 15. Emulsion according to any one of the preceding claims, characterized in that the size of the oil globules of the W / O emulsions of the invention is preferably between 10 nm and 100 pm and preferably between 200 nm and 50 pm. 16. A process for coloring or lightening human keratin fibers, characterized in that the emulsion according to any one of the preceding claims is applied to said fibers in the presence of a composition comprising one or more oxidizing agents. 17. The method of claim 16 characterized in that the composition resulting from the mixing of the emulsion according to any one of claims 1 to 15 with a composition comprising the oxidizing agent (s) is an O / W emulsion. 18. A two-compartment device containing in one an emulsion according to any one of claims 1 to 15 in the other, a composition comprising one or more oxidizing agents.