LU87086A1 - PROCESS FOR DYEING KERATINIC FIBERS WITH OXIDATION DYES ASSOCIATED WITH 5,6-DIHYDROXYINDOLE AND AN IODIDE AND TINCTORIAL COMPOSITION USED - Google Patents

Description

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y PROCESS FOR DYEING KERATINIC FIBERS WITH OXIDATION DYES ASSOCIATED WITH 5,6-DIHYDROXYINDOLE AND AN IODIDE AND TINCTORIAL COMPOSITION IMPLEMENTED.

The invention relates to a new process for dyeing keratin fibers, in particular human keratin fibers such as the hair, with 5,6-dihydroxyindole combined with certain oxidation dyes chosen from the so-called oxidation dyes. "fast" and the couplers and to the compositions used in this process.

The Applicant has described in Luxembourg patent application No. 86,899 filed on May 25, 1987, a process for dyeing keratin fibers 15 essentially characterized in that one applies to these fibers at least one composition (A) containing in a medium suitable for dyeing, at least one oxidation dye in combination with iodide ions, the application of composition (A) being preceded or followed by the application of a composition ί

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2 (B) which contains, in a medium suitable for dyeing, hydrogen peroxide at a pH between 2 and 12.

Numerous methods are also known for dyeing keratin fibers, in particular hair, using 5,6-dihydroxyindole and more particularly a method consisting in dyeing hair in two distinct stages, by applying to the hair. a composition containing 5,6-dihydroxy-10 indole in combination with iodide ions in a medium suitable for dyeing, this application being preceded or followed by the application of hydrogen peroxide. Such a process is described, in particular, in French patent application No. 25 93 061.

The Applicant has discovered that it can obtain particularly remarkable colorings in a sufficiently wide palette of varied shades and with reflections, in particular various shades of chestnut and blonde, particularly sought after in hair coloring by using certain oxidation dyes described in its earlier patent application LU 86,899, associated with 5,6-dihydroxyindole.

It found, moreover, that the various shades thus obtained exhibited improved resistance to external agents including, in particular, superior resistance to light and / or washing compared to the colorings obtained from the compositions containing, ie oxidation dye, or 5,6-dihydroxyindole, described previously. This result is particularly remarkable when 5,6-dihydroxyindole is used in the compositions containing oxidation dyes which in themselves give, by development, relatively clear colorations, not presenting much background, whereas the background is generally desired in 3 "t> hair dye.

The subject of the invention is therefore the use, within the framework of the process described in Luxembourg patent application No. 86.899, of 5,6-dihydroxy-5 indole in combination with at least one oxidation dye taken from the group constituted by the so-called "fast" oxidation dyes and the couplers.

Another object of the invention consists of the compositions used in the course of this process.

The invention also relates to devices with several compartments or "kits" comprising the various compositions suitable for implementing the method according to the invention.

Other objects of the invention will appear on reading the description and examples which follow.

The process for dyeing keratin fibers, preferably human keratin fibers, in accordance with the invention, is essentially characterized in that at least one composition (A) is applied to these fibers, containing, in a medium suitable for the dye, at least 5,6-dihydroxy-indole and at least one oxidation dye taken from the group consisting of the so-called "rapid" oxidation dyes and the couplers, in combination with iodide ions, application of this composition (A) being preceded or followed by the application of a composition (B) which contains, in a medium suitable for dyeing, hydrogen peroxide at a pH of between 2 and 12 and preferably between 2 and 7, and in particular between 2 and 5.

The application of compositions (A) and (B) is optionally separated by rinsing. In the process according to the invention, the ion 4 y iodide is preferably an iodide of alkali metal, alkaline earth metal or ammonium, and in particular potassium iodide.

The so-called “fast” oxidation dyes are molecules with a benzene structure, dye precursors, capable of generating colored compounds by simple oxidation in air, during the time of exposure to the hair, that is to say generally say less than 1 hour, in the absence of another oxidizing agent. They are chosen in particular from trihydroxylated benzene derivatives, diaminohydroxybenzenes, aminodihydroxybenzenes, triaminobenzenes, aminohydroxybenzenes, 1,2-dihydroxybenzenes.

Among the trihydroxy derivatives of benzene, mention may be made of 1,2,4-trihydroxybenzene, 1,2,4-trihydroxy 5-alkylbenzene in which the alkyl group is a lower C1-C6 alkyl group and 1,2,3 -trihydroxy'oenzene and their salts.

Among the diaminohydroxybenzenes, mention may be made of 2,4-diaminophenol, 2,5-diamino 4-methoxy-hydroxybenzene and their salts.

Among the aminodihydroxybenzenes, mention may be made of 2-amino 1,4-dihydroxybenzene, 1,4-dihydroxy 2-diethylaminobenzene, 4-amino resorcin and their salts.

Among the 1,2-dihydroxybenzenes, 1,2-dihydroxybenzene, 4-methyl 1,2-dihydroxybenzene and 3-methoxycatecho! are particularly preferred.

The aminohydroxybenzenes are chosen in particular from 2-amino 4-methoxyphenol, 2-aminophenol, 4,6-dimethoxy 3-amino 1-hydroxybenzene, 2,6-dimethyl 4- (Np-hydroxyphenyl) amino 1- hydroxybenzene and their salts.

As triaminobenzenes, mention may be made of 1,5-diamino 2-methyl 4- (N-p-hydroxyphenyl) aminobenzene and its salts.

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Shaders or couplers are compounds known to react with oxidation bases, also called oxidation dye precursors, by an oxidative condensation process, giving 5 colored compounds specific for the base and the coupler considered. This reaction is called "coupling". They are chosen from phenols, metadiphenols, meta-aminophenols, metaphenylenediamines, mono- or polyhydroxylated derivatives of naphthalene and aminonaphthalene, pyrazolones, benzomorpholines.

Among the couplers or shaders, mention may in particular be made of compounds corresponding to formula (I):

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I (I) R4 20 in which: R-! denotes hydroxy or an amino group which can be substituted by one or more C- | -Cβ hydroxyalkyl groups; R3 and R5, independently of one another, may denote hydrogen, OH, an amino group optionally substituted by a lower C 1-5 -alkylalkyl group or a lower-C 1-6 alkyl group; R2, R4 and Rg may denote a hydrogen atom or a C1-C6 alkoxy group, a hydroxyalkoxy group or a lower C1-C6 alkyl group; R3 and R4 can also together form a methylenedioxy group.

Among the particularly preferred couplers, mention may be made of 3-amino 6-methylphenol, 3-amino-phenol, 1,3-dihydroxybenzene, 2-methoxy 5-amino-phenol, 2-methoxy 5-N ( 2-hydroxyethyl) aminophenol, 1,3-diamino 2,6-dimethoxybenzene, 2-methoxy • r> 6 1-N-methylamino 4- (2-hydroxyethyloxy) aminobenzene, 1.3- diamino 6-methoxybenzene, 1 , 3-diamino 4.6- dimethoxybenzene, 4,6-dimethoxy 1,3-di N (2-hydroxyethyl) aminobenzene, 2,6-dimethoxy 5 3-N (2-hydroxyethyl) amino 1-aminobenzene, 2.4- dimethoxy 3-N (2-hydroxyethyl) amino 1-aminobenzene, 2-methyl 5-N (2-hydroxyethyl) aminophenol, 1,3-di "N (2-hydroxyethyl) amino 4-methoxybenzene, 3-amino 4-methoxyphenol, 3,4-methylenedioxy 1-aminobenzene, 10 3,4-methylenedioxy 6-methoxy 1-aminobenzene, 2.6-dimethyl 3-N (2-hydroxyethyl) aminophenol, 2.6-dimethyl 3-aminophenol, 4-ethoxy 1-amino 3-N, N- (bis 2-hydroxyethyl) aminobenzene, 2,4- (diamino) phenoxyethanol, (2-amino 4-N-methylamino) phenoxyethano 1, 1-methoxy 2N- (2-hydroxyethyl) amino 4-aminobenzene and their salts.

Other preferred couplers are 6-amino-benzomorpholine, 6-hydroxybenzomorpholine, 1-naphthol and 1-amino 7-naphthol and their salts.

These different oxidation dyes are used as a mixture or alone, in combination with the iodide ion and 5,6-dihydroxyindole.

A particularly preferred implementation of the invention consists in using, in combination with 5,6-dihydroxyindole and the iodide ion, at least one trihydroxylated benzene derivative such as 1,2,4-trihydroxybenzene, 1, 2, 4-trihydroxy 5-methyl-benzene or alternatively couplers such as 1,3-dihydroxybenzene, 3-aminophenol, 3-amino-6-methylphenol, 3,4-methylenedioxy β-methoxy 1-amino-benzene, 1-naphthol or their mixtures.

The result obtained with this association is particularly surprising given the dye properties of these oxidation dyes in t

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7 conventional systems, in particular couplers which only generate coloring in the presence of an oxidation dye base or precursor, by an oxidative condensation process.

The subject of the invention is also dye compositions intended for use in a process for dyeing keratin fibers, in particular human hair, comprising at least 5,6-dihydroxyindole, an oxidation dye taken from the group consisting of "fast" oxidation dyes and couplers and iodide ions, in a medium suitable for dyeing. The oxidation dyes used in the compositions in accordance with the invention are preferably chosen from the 15 preferred dyes defined above.

Composition (A), containing 5.6-dihydroxyindole, the oxidation dye and the iodide ions, generally contains the oxidation dye in proportions of between 0.01 and 10% by weight relative to the total weight of the composition (A) and preferably between 0.25 and 5% by weight. The 5.6-dihydroxyindole is generally present in proportions of between 0.01 and 5% by weight, preferably between 0.03 and 3% by weight relative to the total weight of the composition (A). The proportion of iodide, in these same compositions, is preferably between 0.007 and 4% by weight expressed in I ions, and preferably between 0.08 and 1.5% by weight expressed in I ions relative to the total weight of the composition (A).

The hydrogen peroxide content used in the compositions (B) is generally between 1 and 40 volumes, and preferably between 2 and 20 volumes, and more particularly between 3 and 10 volumes.

35 The ratio of 5,6-dihydroxyindole £

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8 associated with the oxidation dye (s), on the one hand, and the iodide ions, on the other hand, is preferably between 0.05 and 10, and more particularly between 0.5 and 2 .

The process according to the invention is implemented by providing exposure times, for the different compositions applied in each of the different times of the process, between 10 seconds and 45 minutes, and preferably of the order of 2 to 25 10 minutes, and more particularly of the order of 2 to 10 minutes.

The Applicant has in fact found that the process according to the invention makes it possible to obtain various colors, in a varied range, of shades which can be very reflective, both rapid and powerful, penetrating well into the fibers and in particular the human keratin fibers such as the hair, without degrading them. These colorings also exhibit improved resistance to external agents, more particularly improved resistance to light and / or washing compared to the methods using only 5,6-dihydroxyindole combined with iodide ions or only the oxidation dye. associated with iodide ions.

It was also able to note that the hair dyed several times as a result of regrowth, by virtue of the methods and compositions used, in accordance with the invention, were softer, more shiny and had good mechanical properties compared to to dyed hair using the methods and compositions of the prior art.

Thanks to the process and compositions according to the invention, relatively intense colorations are obtained in relatively short times, of the order of 5 to 15 minutes.

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The compositions used for carrying out the process according to the invention can be in various forms such as more or less thickened or gelled liquids, creams, emulsions, foams or other forms suitable for make the dye.

The dye compositions intended to be used in the process according to the invention and containing 5,6-dihydroxyindole, the oxidation dye 10 in association with iodide ions, generally comprise an aqueous medium consisting of water or a water-solvent mixture (s), the solvent (s) being preferably chosen from organic solvents such as ethyl alcohol, propyl or isopropyl alcohol, tert-butyl alcohol, ethylene glycol, the monomethyl, monoethyl and monobutyl ethers of ethylene glycol, the acetate of the monoethyl ether of ethylene glycol, propylene glycol, the monomethyl ethers of propylene glycol and of dipropylene glycol and the methyl tetate. Particularly preferred solvents are ethyl alcohol and propylene glycol.

The 5,6-dihydroxyindole and the oxidation dyes can also be stored with the iodides in a medium consisting of anhydrous solvents, this composition being mixed at the time of use with an aqueous medium.

When the medium is aqueous, the composition (Ά) has a pH of between 2 and 7, and preferably between 3.5 and 7.

According to the invention, an anhydrous solvent is called a solvent comprising less than 1% of water.

When the medium consists of a water-solvent mixture, the solvents are present in concentrations preferably between 0.5 and 75%

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10 by weight relative to the total weight of the composition and in particular between 2 and 50% and more particularly between 2 and 20%.

The compositions according to the invention 5 may contain other adjuvants usually used in the dyeing of keratin fibers.

In the preferred application for dyeing the hair, these compositions may in particular contain fatty amides in proportions of 0.05 to 10%, anionic, cationic, nonionic, amphoteric surfactants or their mixtures, present in proportions of between 0.1 and 50% by weight, thickening agents, perfumes, sequestering agents, film-forming agents, treatment agents, dispersing agents, conditioning agents, preserving agents, opacifying agents , keratin fiber swelling agents.

The thickeners can be chosen more particularly from sodium alginate, gum arabic, guar gum, biopolymers such as xanthan gum or scleroglucans, cellulose derivatives such as methylcellulose, hydroxyethyl cellulose, Hydroxypropyl methylcellulose, the sodium salt of carboxymethylcellulose and polymers of acrylic acid. It is also possible to use mineral thickening agents such as bentonite. These thickeners, used alone or in mixtures, are preferably present in proportions of between 0.1 and 5% by weight relative to the total weight of the composition and advantageously between 0.5 and 3%.

The acidifying agents which can be used in the preferred embodiment of the process using the compositions at acid pH can be chosen from lactic acid, acetic acid, acid

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i 11 tartaric, phosphoric acid, hydrochloric acid, citric acid.

The pH can also be adjusted with basifying agents chosen in particular from amines such as alkanolamines, alkylamines, hydroxides or alkali or ammonium carbonates, in particular when the precursors are used in the form of salts of strong acids .

When the composition is used in the form of foam, it can be packaged under pressure in an aerosol device in the presence of a propellant and at least one foam generator. The foaming agents may be foaming, anionic, cationic, nonionic, amphoteric polymers or surfactants of the type of those defined above.

With a view to implementing the process according to the invention, the various compositions can be packaged in a device with several compartments also called a "kit" or dye kit, comprising all the components intended to be applied for the same dye. on keratin fibers in successive applications with or without premix. Such devices are known in themselves and may comprise a first compartment containing the composition (A), containing 5,6-dihydro-xyindole, the oxidation dye as mentioned above, in the presence of the iodide ions. in a medium suitable for dyeing and in a second compartment, a solution of hydrogen peroxide.

When the medium containing 5,6-dihydroxyindole, the oxidation dye and the iodide ions is an anhydrous medium, mixing is carried out before use with an aqueous support suitable for dyeing, optionally present in a third

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12 compartments.

The composition containing 5,6-dihydroxy-indole, the oxidation dye and the iodide ion in an anhydrous medium can optionally be applied directly to the wet keratin fibers.

When the medium suitable for dyeing is aqueous, the composition of the first compartment preferably has a pH of between 2 and 7, and in particular between 3.5 and 7. The pH of the composition 10 containing hydrogen peroxide is between 2 and 12, but it is preferably acidic and between 2 and 7 and more particularly between 2 and 5.

The devices with several compartments usable in accordance with the invention can be equipped with mixing means at the time of use, known in themselves, and be packaged under an inert atmosphere.

The process and the compositions used in accordance with the invention can be used for dyeing natural or already dyed hair, permed or not, or straightened hair or strongly or slightly discolored and optionally permed hair. It is also possible to use them for dyeing furs or wool.

The following examples are intended to illustrate the invention without, however, being limiting in nature.

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EXAMPLE 1 13

The following compositions are prepared: COMPOSITION A * [: - 5,6-dihydroxyindole 0.30 g 5 - 1,2,4-trihydroxybenzene 1.00 g - Potassium iodide 1.00 g - Ethyl alcohol 10.00 g - Guar gum, sold under the name "JAGUAR HP 60" by the company CELANESE 1.00 g - Alkyl glycoside ether, sold at a concentration of 60% MA under the name "TRITON CG 110"

by SEPPIC 5.00 g MA

15 - Preservative qs - spontaneous pH = 5.8 - Water qs 100.00 g COMPOSITION B with 12.5 volumes of hydrogen peroxide: 20 - Hydrogen peroxide 3.75 g - Ammonium lauryl sulfate 6.70 g - Gum arabic 1.00 g - Stabilizer 0.03 g; 25 - Perfume qs - Amino-2 methyl-2 propanol-1 qs pH = 4 - Water qs 100.00 g

Natural hair is dyed, 90% white, by applying the composition (Ai).

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The composition is left to stand (h- \) for 15 minutes. After rinsing with water, the composition (B) of hydrogen peroxide is applied to 12.5 volumes which are left to act for 5 minutes. After rinsing with water and 5 shampoos, the hair is dyed in light golden brown with red reflections.

EXAMPLE 2 The following composition is prepared: COMPOSITION A? : - 5,6-dihydroxyindole 0.60 g 15 - 1,3-dihydroxybenzene 0.05 g - 3-aminophenol 0.40 g - Potassium iodide 1.00 g - Ethyl alcohol 10.00 g - Guar gum, sold under the name "JAGUAR HP 60" by the

CELANESE 1, 00 g - Alkyl glycoside ether, sold

at a concentration of 60% MA under the name "TRITON CG 110" by 25 the SEPPIC Company 5.00 g MA

- Preservative qs - spontaneous pH = 6.5 - Water qs 100.00 g 30 We proceed to the coloring of permed hair, 90% white, by applying the composition (A2) -

Leave for 15 minutes. After rinsing with water, a composition (B) of hydrogen peroxide at 12.5 volumes is applied which is left to act for 5 minutes. After * 15 rinsing with water and shampoo, the hair is dyed dark brown with natural reflection.

EXAMPLE 3

The following composition is prepared: 5 COMPOSITION A ^: - 5,6-dihydroxyindole 0.20 g - 3-aminophenol 0.10 g - Potassium iodide 1.00 g 10 - Ethyl alcohol 10.00 g - Guar gum, sold under the name "JAGUAR HP 60" by the

CELANESE 1.00 g - Alkyl glycoside ether, sold at a concentration of 60% MA under the name "TRITON CG 110" by the

SEPPIC Company 5.00 g MA

- Preservative qs - spontaneous pH = 7 20 - Water qs 100.00 g

Natural hair, 90% white hair is dyed, applying composition (A3) · 25 Leave to stand for 15 minutes. After rinsing with water, a composition (B) of hydrogen peroxide at 12.5 volumes is applied which is left to act for 5 minutes. After rinsing with water and shampoo, the hair is dyed golden blonde with natural reflection.

EXAMPLE 4 t 16

The following composition is prepared: COMPOSITION A4: - 5,6-dihydroxyindole 0.70 g 5 - 1,2,4-trihydroxy 5-methylbenzene 3.00 g - Potassium iodide 2.00 g - Ethyl alcohol 10.00 g - Guar gum, sold under the name "JAGUAR HP 60" by the company CELANESE · 1.00 g - Alkyl glycoside ether, sold at a concentration of 60% MA under the name "TRITON CG 110" by the

SEPPIC Company 5.00 g MA

15 - Preservative qs - spontaneous pH = 5.4 - Water qs 100.00 g

Permanent hair is dyed, 90% white, by applying the composition (A4).

Leave for 15 minutes. After rinsing with water, a composition (B) of hydrogen peroxide is applied to! 12.5 volumes which are left to act for 5 minutes. After 25 rinsing with water and shampoo, the hair is dyed dark mahogany blonde.

EXAMPLE 5 *

The following composition is prepared: 17 COMPOSITION As: - 5,6-dihydroxyindole 0.50 g 5 - 1,3-dihydroxybenzene 0.50 g - Potassium iodide 1.00 g - Ethyl alcohol 10.00 g - Guar gum , sold under the name "JAGUAR HP 60” by the company CELANESE 1.00 g - Alkyl glycoside ether, sold at a concentration of 60% MA under the name "TRITON CG 110" by the

SEPPIC Company 5.00 g MA

15 - Preservative qs - Triethanolamine qs pH = 6 - Water qs 100.00 g

We proceed to the coloring of permanent hair, 90% white, by applying the composition (a5).

Leave for 15 minutes. After rinsing with water, a composition (B) of hydrogen peroxide at 12.5 volumes is applied which is left to act for 5 minutes. After rinsing with water and shampooing, the hair is dyed in dark ash brown.

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EXAMPLE 6

The following composition is prepared: 18 COMPOSITION Afi: - 5,6-dihydroxyindole 0.20 g 5 - 3-aminophenol 0.10 g - 1,2,4-trihydroxybenzene 0.40 g - Potassium iodide 0.50 g - Ethyl alcohol 10.00 g - Guar gum, sold under the name 10 "JAGUAR HP 60" by the

CELANESE 1.00 g - Alkyl glycoside ether, sold at a concentration of 60% MA under the name "TRITON CG 110" by the

15 SEPPIC Company 5.00 g MA

- Preservative qs - spontaneous pH = 6.3 - Water qs 100.00 g 20 We proceed to color natural hair, 90% white, by applying the composition (A6).

Leave for 15 minutes. After rinsing with water, a composition (B) of hydrogen peroxide is applied to; 25 12.5 volumes which are left to act for 5 minutes. After rinsing with water and shampoo, the hair is dyed a light ashy golden blonde.

"19 EXAMPLE 7

The following composition is prepared:

Composition Aj: - 5,6-dihydroxyindole 0.30 g 5 - 3-amino 6-methylphenol 0.30 g - 1,2,4-trihydroxybenzene 0.30 g - Potassium iodide 0.80 g - Ethyl alcohol 10, 00 g - Guar gum, sold under the name "JAGUAR HP 60" by the

CELANESE '1, 00 g - Alkyl glycoside ether, sold

at a concentration of 60% MA under the name "TRITON CG 110" by 15 the company SEPPIC 5.00 g MA

- Preservative qs - spontaneous pH = 6.7 - Water qs 100.00 g 20 We proceed to coloring natural hair, 90% white, by applying the composition (& 7).

Leave for 15 minutes. After rinsing with ‘25 water, apply a composition (B) of hydrogen peroxide at 12.5 volumes which is left to act for 5 minutes. After rinsing with water and shampoo, the hair is dyed reddish brown.

The following composition is prepared: EXAMPLE 8 20

Composition A3: - 5.6-dihydroxyindole 0.40 g 5 - 1-naphthol 0.40 g - Potassium iodide 0.80 g - Ethyl alcohol 10.00 g - Guar gum, sold under the name "JAGUAR HP 60 "by the company CELANESE 1.00 g - Alkyl ether of glycoside, sold at a concentration of 60% MA under the name TRITON CG 110 by the

SEPPIC Company 5.00 g MA

15 - Preservative qs - Triethanolamine qs pH = 8.5 - Water qs 100.00 g

We proceed to the coloring of natural hair, 90% white, by applying the composition (As).

Leave for 15 minutes. After rinsing with water, a composition (B) of hydrogen peroxide at 12.5 volumes is applied, which is left to act for 5 minutes. After rinsing with water and shampoo, the hair is dyed in light brown with ash reflection.

EXAMPLE 9 *

The following composition is prepared: 21

Composition Ag: - 5,6-dihydroxyindole 0.30 g 5 - 3,4-methylenedioxy 6-methoxy 1-aminobenzene 0.30 g - Potassium iodide 0.50 g - Ethyl alcohol 10.00 g - Guar gum, sold under the name "JAGUAR HP 60" by the

CELANESE 1.00 g - Alkyl glycoside ether, sold

at a concentration of 60% MA under the name "TRITON CG 110" by 15 the company SEPPIC 5.00 g MA

- Preservative qs - Triethanolamine qs pH = 6 - Water qs 100.00 g 20 We proceed to color natural hair, 90% white, by applying the composition (Ag).

Leave for 15 minutes. After rinsing with water, a composition (B) of hydrogen peroxide is applied at 12.5 volumes which is left to act for 5 minutes. After rinsing with water and shampoo, the hair is dyed light brown.

Claims (26)

1. Process for dyeing keratinous fibers, characterized in that at least one composition (A) is applied to these fibers (A) containing, in a medium suitable for dyeing, at least 5,6-dihydroxyindole and at at least one oxidation dye chosen from rapid oxidation dyes and couplers in combination with iodide ions, the application of composition (A) being preceded or followed by the application of a composition (B) which contains, in a medium suitable for dyeing, hydrogen peroxide at a pH between 2 and 12. 2- N- (2-hydroxyethyl) amino 4-aminobenzene and their salts. 2. Dyeing method according to claim 1, characterized in that the composition (B) is at an acidic pH, between 2 and 7 and preferably between 2 and 5. 3- N, N- (bis-2 hydroxyethyl) aminobenzene, 5 2,4 (diamino) phenoxyethanol, (2-amino 3- N (2-hydroxyethyl) amino 1-aminobenzene, 2-methyl 3. Method according to claim 1 or 2, characterized in that the iodides are iodides of alkali metal, alkaline earth metal or ammonium. 4- N-methylamino) phenoxyethanol, 1-methoxy 4. Method according to any one of claims 1 to 3, characterized in that one applies to the fibers, in a first step, a composition (A) containing the iodide ions in the form of iodide of alkali metal, alkaline - earthy or ammonium, 5,6-dihydroxyindole and the oxidation dye in a medium suitable for dyeing, and in a second step, composition (B) containing, in a medium suitable for dyeing, hydrogen peroxide. 5-N (2-hydroxyethyl) aminophenol, 4-methoxy 1,3-di N (2-hydroxyethyl) aminobenzene, 3-amino 4-methoxyphenol, 3,4-methylenedioxy 1-aminobenzene, * 25 3,4-methylenedioxy 6-methoxy 1-aminobenzene, 2.6-dimethyl 3-N (2-hydroxyethyl) aminophenol, 2.6-dimethyl 3-aminophenol, 4-ethoxy 1-amino 5. Method according to any one of claims 1 to 4, characterized in that aqueous compositions of hydrogen peroxide are used from 1 to 40 volumes and preferably from 2 to 20 volumes. 23 ft 6. Method according to any one of claims 1 to 5, characterized in that the different compositions are applied with exposure times between 10 seconds and 45 minutes and preferably between 2 and 25 minutes. 7. Dye composition of keratin fibers, characterized in that it contains at least 5,6-dihydroxyindole, at least one oxidation dye chosen from rapid oxidation dyes and couplers, in combination with ions iodide. 8. Composition according to claim 7, characterized in that it contains only as oxidation dyes of the couplers. 9. Composition according to claim 7, characterized in that the fast oxidation dyes are chosen from trihydroxylated benzene derivatives, diaminohydroxybenzenes, aminodihydroxy-benzenes, aminohydroxybenzenes, triaminobenzenes and 1,2-dihydroxybenzenes. 10. Composition according to claim 9, characterized in that the rapid oxidation dyes are chosen from 1,2,4-trihydroxybenzene, 1,2,4-trihydroxy 5-alkyl (Ci-Cg) benzene, 1,2,3- trihydroxybenzene, 4-aminoresorcin, 1,2-dihydroxybenzene, 4-methyl 1,2-dihydroxybenzene, 2-amino 1,4-dihydroxybenzene, 2-amino 4-methoxyphenol, 2.4- diaminophenol, 2-aminophenol, 3-methoxy-catechol, 1,4-dihydroxy 2-diethylaminobenzene, 2,5-diamino 4-methoxy 1-hydroxybenzene, 4,6-dimethoxy 3-amino 1 -hydroxybenzene, 2,6-dimethyl 4- (Np-hydroxyphenyl) amino 1-hydroxybenzene, 1,5-diamino 2-methyl 4- (Np-hydroxyphenyl) aminobenzene and their salts. 't I * 24 11. Composition according to claim 7 or 8, characterized in that the couplers correspond to formula (I): 5 _R 2 (I) in which R- | denotes an OH group or an amino group which may be substituted by one or more C1-C6 hydroxyalkyl groups? R3 and R5 denote, independently of one another, hydrogen, an OH or amino group optionally substituted by a lower C 1 -C 6 alkyl group or a lower C 1 -C 6 hydroxyalkyl group; R2, R4 and Rc denote hydrogen, a lower alkoxy group in C- | -Cg, a lower alkyl group in C- | -Cg, a hydroxyalkoxy group, R3 and R4 can also form together a methylenedioxy group. 12. Composition according to claim 11, characterized in that the couplers of formula (I) are chosen from '3-aminophenol, 1.3-dihydroxybenzene, 3-amino 6-methylphenol, 2-methoxy 5-aminophenol, 2-methoxy 5-N (2-hydroxyethyl) aminophenol, 1,3-diamino 2,6-dimethoxybenzene, 2-methoxy 1-N-methylamino 4- (2-hydroxyethyloxy) aminobenzene, 1, 3-diamino 4,6-dimethoxybenzene, 1.3- diamino β-methoxybenzene, 4,6-dimethoxy 1,3-di N (2-hydroxyethyl) aminobenzene, 2,6-dimethoxy-3-N 30 (2- hydroxyethyl) amino 1-aminobenzene, 2,4-dimethoxy 13. Composition according to claim 7 or 8, characterized in that the composition (A) contains 10. title of coupler 6-aminobenzomorpholine, 6-hydroxybenzomorpholine, 1-naphthol, 1-amino 7-naphthol or their salts. 14. Dye composition of keratin fibers according to claim 7, characterized in that it contains 5,6-dihydroxyindole, at least one oxidation dye chosen from 1,2,4-trihydroxybenzene, 1,2 , 4-trihydroxy 5-methyl-benzene, 1,3-dihydroxybenzene, 3-aminophenol, 3-amino 6-methylphenol, 3,4-methylenedioxy 6-methoxy 20 1-aminobenzene, 1-naphthol and iodide ions. 15. Composition according to any one of claims 7 to 14, characterized in that the oxidation dye is present in proportions of between 0.01 and 10% by weight, and preferably between 0.25 and 5 % by weight and that the 5,6-dihydroxyindole is present in proportions of 0.01 to 5% by weight and preferably between 0.03 and 3% by weight relative to the total weight of the composition. 16. Composition according to any one of Claims 7 to 15, characterized in that the proportion of iodide is between 0.007 and 4% by weight expressed in I ions “relative to the total weight of the composition and preferably between 0.08 and 1.5% by weight relative to the total weight of the composition. s · * 26 17. Composition according to any one of claims 7 to 16, characterized in that the weight ratio between the 5,6-dihydroxyindole and the oxidation dyes, on the one hand, and the iodide, on the other hand 5 part, is between 0.05 and 10, and preferably between 0.5 and 2. 18. Composition according to any one of claims 7 to 17, characterized in that the medium suitable for dyeing is an aqueous medium 10 consisting of water or a water-solvent mixture (s), having a pH included between 2 and 7 and preferably between 3.5 and 7. 19. Composition according to any one of claims 7 to 18, characterized in that it is in the form of a solution in one or more anhydrous solvent (s). 20. Composition according to any one of claims 18 or 19, characterized in that the solvents are chosen from ethyl alcohol, 2o propyl or isopropyl alcohol, tert-butyl alcohol, ethylene glycol, monomethyl ethers, monoethyl and monobutyl of ethylene glycol, monoethyl ether of ethylene glycol acetate, propylene glycol, monomethyl ethers of propylene glycol and dipropylene glycol and methyl lactate. 21. Process for dyeing keratin fibers according to any one of claims 1 to 6, characterized in that the composition (A) used is as defined in any one of claims 7 to 20. 22. Method according to any one of claims 1 to 6 and 21, characterized in that one uses compositions containing one or more adjuvant (s) chosen from fatty amides in proportions of 0.05 to 10%, the agents ί, «« 27 anionic, cationic, nonionic, amphoteric surfactants or their mixtures, present in proportions of between 0.1 and 50% by weight, the thickening agents in proportions of between 0.1 and 5% by weight, the perfumes, the sequestering agents, the film-forming agents, the treatment agents, the dispersing agents, the conditioning agents, the preserving agents, the opacifying agents, the bulking agents keratin fibers. 23. Application of the method according to any one of claims 1 to 6 and 21,22 to the dyeing of human hair. 24. Multi-compartment device or dye "kit", characterized in that it comprises, in a first compartment, a composition containing 5,6-dihydroxyindole, an oxidation dye taken from the group of dyes rapid oxidation or couplers in the presence of iodide ions in a medium suitable for dyeing as defined in any one of claims 7 to 20, and in a second compartment, an aqueous composition of hydrogen peroxide. 25. Device according to claim 24, 25 characterized in that the aqueous hydrogen peroxide composition has a pH of between 2 and 12, and preferably between 2 and 7. 26. Device with several compartments' or "kit" for dyeing keratin fibers, characterized in that it comprises a first compartment containing a composition containing, in an anhydrous solvent medium, iodide ions, 5,6-dihydroxy- indole and oxidation dyes taken from the group consisting of rapid oxidation dyes and 35 couplers, in a second compartment an aqueous medium 28 s approprié * suitable for dyeing and in a third compartment an aqueous composition of peroxide d hydrogen from 1 to 40 volumes at a pH between 2 and 12, and preferably between 2 and Ί, the composition 5 contained in the second compartment being intended to be mixed with the content of the first compartment at the time of use.