WO2016035872A1

WO2016035872A1 - Cosmetic composition for keratin fibers

Info

Publication number: WO2016035872A1
Application number: PCT/JP2015/075145
Authority: WO
Inventors: Kenta Kitsuka; Daisuke Misu
Original assignee: L'oreal
Priority date: 2014-09-05
Filing date: 2015-08-28
Publication date: 2016-03-10
Also published as: JP2016056110A

Abstract

A cosmetic composition for keratin fibers includes: (i) an alkali-containing composition including at least one alkaline agent, at least one fatty material, and at least one surfactant; and (ii) a developer composition including at least one oxidizing agent, at least one fatty material, and optionally at least one surfactant. The amount in weight percent of the at least one surfactant in the alkali-containing composition is greater than the amount in weight percent of the at least one fatty material in the alkali-containing composition. The total amount of fatty materials in the cosmetic composition is at least 10 % by weight relative to the weight of the cosmetic composition, and the weight ratio of a total amount of surfactants in the cosmetic composition to the total amount of the fatty materials in the cosmetic composition is 0.7 or more.

Description

DESCRIPTION

COSMETIC COMPOSITION FOR KERATIN FIBERS

TECHNICAL FIELD

The present invention relates to a cosmetic composition for keratin fibers such as human hair.

BACKGROUND

Two-agent type cosmetic compositions for keratin fibers, such as hair bleaching or coloring compositions, have been widely used to change hair color because of their high bleaching or coloring performance. The two-agent type compositions usually contain an alkaline agent and an oxidizing agent, both of which are admixed by the user to form a hair bleaching or coloring composition just prior to use. The oxidizing agent is believed to degrade natural pigments in keratin fibers, or melanin, under an alkaline condition, which may result in lightening of the fibers. Conventionally, ammonia has been commonly used as an alkaline agent because of its high efficiency in adjusting the pH of the composition to a proper alkaline condition to activate the oxidizing agent. However, such conventional hair products often give off unpleasant odor of ammonia, especially when the user applies the product onto hair.

In order to reduce malodor of ammonia, efforts have been made to replace ammonia with other alkaline agents having less offensive odor. However, such replacement often impairs bleaching performance of the composition, causing unsatisfactory bleaching or coloring results.

In addition to the improvement of odor as described above, an improvement is desired in preparation and/or application characteristics of the cosmetic composition. In order for the user to easily mix an alkaline agent and an oxidizing agent, each agent is required to have low viscosity. On the other hand, the mixed composition is desired to have relatively high viscosity so that the mixed composition stays on hair for a sufficient amount of time to change the hair color. While efforts have been made to increase the viscosity by, for example, adding thickening agents to at least one of the agents, such approaches not only raise the viscosity of the agents prior to mixing, but also require additional ingredients to raise the viscosity of the mixed composition. Thus, it is desired for a cosmetic composition for keratin fibers to have less unpleasant odor of ammonia, yet provide good bleaching and/or coloring effect. It is also desired for a cosmetic composition for keratin fibers that each agent has a lower viscosity while the mixture thereof has a higher viscosity.

Accordingly, one aspect of the present invention is to provide a composition which addresses or overcomes at least some of the aforementioned problems associated with the prior art compositions, particularly a composition which provides less unpleasant odor of ammonia and has sufficient viscosity to stay on desired areas of keratin fibers for a sufficient amount of time to change the color of keratin fibers.

SUMMARY

According to one aspect of the present invention, a cosmetic composition for keratin fibers includes: (i) an alkali-containing composition including at least one alkaline agent, at least one fatty material, and at least one surfactant, where an amount in weight percent of the at least one surfactant in the alkali-containing composition is greater than an amount in weight percent of the at least one fatty material in the alkali-containing composition; and (ii) a developer composition including at least one oxidizing agent, at least one fatty material, and optionally at least one surfactant. The total amount of fatty materials in the cosmetic composition is at least 10 % by weight relative to a weight of the cosmetic composition. The weight ratio of a total amount of surfactants in the cosmetic composition to the total amount of the fatty materials in the cosmetic composition is 0.7 or more.

According to another aspect of the present invention, a process includes: mixing (i) an alkali-containing composition including at least one alkaline agent, at least one fatty material, and at least one surfactant, where an amount in weight percent of the at least one surfactant in the alkaline-containing composition is greater than an amount in weight percent of the at least one fatty material in the alkali-containing composition, and (ii) a developer composition including at least one oxidizing agent, at least one fatty material, and optionally at least one surfactant, to prepare a cosmetic composition; and applying the cosmetic composition to keratin fibers in an amount sufficient to change a color of the keratin fibers. The total amount of fatty materials in the cosmetic composition is at least 10 % by weight relative to a weight of the cosmetic composition. The weight ratio of the total amount of surfactants in the cosmetic composition to the total weight of the fatty materials in the cosmetic composition is 0.7 or more. According to another aspect of the present invention, a cosmetic kit includes: (i) an alkali-containing composition including at least one alkaline agent, at least one fatty material, and at least one surfactant, where an amount in weight percent of the at least one surfactant in the alkali-containing composition is greater than an amount in weight percent of the at least one fatty material in the alkali-containing composition; and (ii) a developer composition including at least one oxidizing agent, at least one fatty material, and optionally at least one surfactant. The mixture of the alkali-containing composition and the developer composition forms a cosmetic composition. A total amount of fatty materials in the cosmetic composition is at least 10 % by weight relative to a weight of the cosmetic composition. The weight ratio of a total amount of surfactants in the cosmetic composition to the total amount of the fatty materials in the cosmetic composition is 0.7 or more.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only, and are not restrictive of the invention.

DETAILED DESCRIPTION

Other than in the operating examples, or where otherwise indicated, all numbers expressing quantities of ingredients and/or reaction conditions are to be understood as being modified in all instances by the term "about."

As used herein, the expression "at least one" means one or more and thus includes individual components as well as mixtures/combinations.

As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will further understood that the terms "comprising," "including," and variants thereof, when used in this specification, specify the presence of stated features, elements, and/or components, but do not preclude the presence or addition of one or more other features, elements, components, and/or groups thereof.

As used herein, the term "hair" includes any keratin fibers, for example, living hair such as head hair, and non-living hair such as hair swatches, wigs, and extensions, and includes any mammalian hair, including human hair.

As used herein, the term "weight of the cosmetic composition" means the sum of the weight of all components, compounds, or ingredients of the cosmetic composition. It is generally understood that, when the cosmetic composition is prepared from the mixture of the alkali-containing composition and the developer composition only, the "weight of the cosmetic composition" is equal to the sum of the weight of the alkali-containing

composition and that of the developer composition.

The viscosities indicated in this specification and in the claims are measured in a Brookfield viscometer (Shibaura system, VS-A1) at room temperature, unless otherwise indicated. As used herein, the term "room temperature" indicates that the temperature is not critical and that no exact temperature has to be maintained. Generally, "room temperature" is understood to mean temperatures ranging from about 15 °C to about 27 °C.

Unless otherwise indicated, all numbers expressing quantities of ingredients, reaction conditions, and so forth used in the specification and claims are to be understood as being modified in all instances by the term "about." Accordingly, unless indicated to the contrary, the numerical parameters set forth in the following specification and attached claims are approximates that may be vary depending upon the desired properties sought to be obtained by the present invention.

The cosmetic composition, a method, and a kit of the present invention can comprise, consist of, or consist essentially of the essential elements and limitations of the invention described herein, as well as any additional or optional ingredients, components, or limitations described herein or otherwise useful in personal care compositions intended for application to keratin fibers.

According to one aspect of the present invention, a cosmetic composition for keratin fibers includes: (i) an alkali-containing composition including at least one alkaline agent, at least one fatty material, and at least one surfactant; and (ii) a developer composition including at least one oxidizing agent, at least one fatty material, and optionally at least one surfactant.

(i) Alkali-containing composition

(Alkaline agent)

The alkali-containing composition includes at least one alkaline agent. The at least one alkaline agent may be organic or inorganic, or a mixture of an organic and inorganic alkaline agents. The at least one alkaline agent is preferably selected from organic bases, salts of organic bases, inorganic bases, and salts of inorganic bases. Such alkaline agents may be used individually, or can be mixed with different kind of alkaline agents.

The first example of the alkaline agent is organic bases. Examples of organic bases may include organic amines and pyridines. It is preferable that the alkaline agent is chosen from: monoamines and derivatives thereof; diamines and derivatives thereof; polyamines and derivatives thereof; amino acids; oligomers of amino acids and derivatives thereof; urea and derivatives thereof; and guanidine and derivatives thereof.

The organic bases may be organic amines, including alkanolamines such as mono-, di-, or trialkanolamines, including one to three identical or different Ci-C₄ hydroxyalkyl radicals. Examples of the alkanolamines may include, but are not limited to,

monoethanolamine, diethanolamine, triethanolamine, monoisopropanolamine,

diisopropanolamine, N-dimethylaminoethanolamine, 2-amino-2-methyl-l-propanol, triisopropanolamine, 2-amino-2 -methyl- 1 ,3 -propanediol, 3-amino-l ,2-propanediol, 3- dimethylamino- 1 ,2-propanediol and tris(hydroxymethylamino)methane.

The at least one alkaline agent may be at least one alkanolamine. Preferably, the alkanolamine is chosen from monoethanolamine and 2-amino-2-methyl-l-propanol.

Mixtures of monoethanolamine and 2-amino-2-methyl-l -propanol may also be utilized as the alkaline agent. In at least one embodiment, the alkaline agent is selected from alkalnoamines, and is particularly monoethanolamine.

The at least one alkaline agent may be an organic amine having the formula below:

Rx Rz

\ /

in which W is a Ci-C₆ alkylene residue optionally substituted with a hydroxyl group of a Ci-C₆ alkyl radical, and Rx, Ry, Rz, and Rt, which may be identical or different, represent a hydrogen atom or a Ci-C₆ alkyl radical, Q-Q hydroxyalkyl radical or Ci-C aminoalkyl radical. Examples of such organic amines may include, but are not limited to, 1 ,3- diaminopropane, l ,3-diamino-2-propanol, spermine, and spermidine.

The organic amine may be chosen from amino acids including, but not limited to, arginine, lysine, histidine, ornithine, and citrulline. The second example of the alkaline agent is salts of the organic bases described above. The at least one alkaline agent may include a salt of the organic amines described above. Salts of the organic bases may be organic or inorganic salts. The organic salts may be chosen from the salts of organic acids such as citrates, lactates, glycolates, gluconates, acetates, propionates, fumarates, oxalates, and tartrates. The inorganic salts may be chosen from hydrohalides such as hydrochlorides, carbonates, hydrogen carbonates, sulfates, hydrogen phosphates, and phosphates.

The third example of the alkaline agent is inorganic bases. Examples of the inorganic bases may include, but are not limited to, alkaline metal hydroxides, alkaline earth metal hydroxides, alkaline metal (hydrogen)carbonates, alkaline earth metal

(hydrogen)carbonates, alkaline metal metasilicates, and mixtures thereof. Specific examples of inorganic bases include, but are not limited to, sodium carbonate, potassium carbonate, sodium hydroxide, potassium hydroxide, calcium hydroxide, magnesium hydroxide, sodium hydrogen carbonate, potassium hydrogen carbonate, sodium metasilicate, and potassium metasilicate.

The alkali-containing composition may include a small amount of aqueous ammonia. Preferably, the alkali-containing composition does not include aqueous ammonia as the alkaline agent. In such ammonia-free compositions, at least one alkanolamine, such as monoethanolamine, may be included as the alkaline agent.

The amount of the alkaline agent in the alkali-containing composition is preferably from 0.01 to 15 % by weight, preferably from 0.1 to 10 % by weight, and more preferably from 1 % to 10 % by weight, relative to the total weight of the alkali-containing

composition.

The amount of the alkaline agent in the alkali-containing composition may be controlled so that the total amount of the alkaline agent in the cosmetic composition is from 0.05 % to 15 % by weight, more preferably from 1 % to 8 % by weight, relative to the weight of the cosmetic composition.

(Fatty material)

The alkali-containing composition includes at least one fatty material. The fatty material may be used singly, or two or more different types of fatty materials may be used in combination. As used herein, the term "fatty material" means an organic compound that is insoluble in water at room temperature and atmospheric pressure (760 mmHg) (solubility of less than 5 %, preferably 1 % and even more preferably 0.1 %). The fatty material may include, in its structure, at least one sequence of at least two siloxane groups or at least one hydrocarbon- based chain containing at least 6 carbon atoms. In addition, the fatty material may be soluble in organic solvents, for instance, chloroform, ethanol, benzene, liquid petroleum jelly, or decamethylcyclopentasiloxane, at room temperature and atmospheric pressure.

The fatty material may be in the form of a liquid or a solid. Here, "liquid" and "solid" mean that the fatty material is in the form of a liquid or a paste (non-solid), or solid, respectively, at room temperature and atmospheric pressure. It is preferable that the fatty material is in the form of a liquid or a paste, more preferably in the form of a liquid, at room temperature and atmospheric pressure.

The fatty material may be, for example: nonsilicone oils such as mineral, plant, animal, or synthetic oils; nonsilicone waxes; silicones; lower alkanes; fatty acids; fatty alcohols; fatty acid esters; and fatty alcohol esters. Preferably, the fatty material is chosen from oils of animal or plant origin, mineral oils, synthetic oils, fatty alcohols, fatty acids, and silicones. More preferably, the fatty material is chosen from oils of animal or plant origin, mineral oils, synthetic oils, and silicone oils. The fatty material may be volatile or nonvolatile.

The fatty materials may be nonsilicone oils such as mineral, plant, animal, or synthetic oils. Examples of plant oil may include, but are not limited to, linseed oil, camellia oil, macadamia nut oil, sunflower oil, apricot oil, soybean oil, arara oil, hazelnut oil, corn oil, mink oil, olive oil, avocado oil, sasanqua oil, castor oil, safflower oil, jojoba oil, almond oil, grapeseed oil, sesame oil, soybean oil, peanut oil, and mixtures thereof.

Examples of animal oil may include, but are not limited to,, squalene,

perhydrosqualene and squalane.

Synthetic glycerides such as caprylic/capric acid triglycerides, including those sold by the company Stearinerie Dubois or those sold under the names Miglyol® 810, 812 and 818 by the company Dynamit Nobel, may also be used.

The fatty acids that may be used in the alkali-containing composition may have at least one saturated or unsaturated, linear or branched, hydrocarbon-based group containing 6 to 30 carbon atoms, which is optionally substituted with at least one hydroxyl group (such as 1 to 4). The fatty acids may be unsaturated fatty acids which may include one to three conjugated or nonconjugated carbon-carbon double bonds. Specific examples of fatty acids may include, but are not limited to, myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, linoleic acid, linolenic acid, and isostearic acid.

The fatty alcohols that may be used in the alkali-containing composition may be saturated or unsaturated, linear or branched, and may contain 6 to 30 carbon atoms, preferably from 8 to 30 carbon atoms. Specific examples of fatty alcohols may include, but are not limited to, lauryl alcohol, cetyl alcohol, stearyl alcohol, and the mixture thereof (such as cetylstearyl alcohol), isostearyl alcohol, behenyl alcohol, octyldodecanol, 2- butyloctanol, 2-hexyldecanol, 2-undecylpentadecanol, oleyl alcohol, undecylenyl alcohol, palmitoleyl alcohol, myristyl alcohol, arachidonyl alcohol, erucyl alcohol, linolenyl alcohol, and linoleyl alcohol. Such fatty alcohols may be used alone, or in combination with different fatty alcohol.

The fatty material may also be a nonsilicone wax. As used herein, "wax" means the fatty material that is solid at room temperature and atmospheric pressure, and has a melting point of, for example, 35 °C or higher. Examples of nonsilicone wax may include, but are not limited to: plant waxes such as carnauba wax, candelilla wax, esparto grass wax, olive wax, rice wax, hydrogenated jojoba wax, or the absolute waxes of flowers such as the essential wax of blackcurrant blossom sold by the company Bertin; mineral waxes such as paraffin wax or ozokerite; animal waxes such as beeswax or modified beeswax (such as carabellina); and synthetic waxes such as polyethylene waxes (such as the wax sold under the name PERFORMALENE 400 POLYETHYLENE by the company New Phase

Technologies).

The esters may be of saturated or unsaturated, linear or branched Cj-C₂₆ aliphatic mono- or polyacids and of saturated or unsaturated, linear or branched C₁-C₂₆ aliphatic mono- or polyalcohols, the total carbon number of the esters being greater than or equal to 10.

Examples of monoesters may include, but are not limited to, dihydroabietyl behenate; octyldodecyl behenate; isocetyl 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; methylacetyl ricinoleate; myristyl stearate; octyl isononanoate; 2-ethylhexyl isononate; octyl palmitate; octyl pelargonate; octyl stearate; octyldodecyl erucate; oleyl erucate; ethyl and isopropyl palmitates, 2-ethylhexyl palmitate, 2-octyldecyl palmitate, alkyl myristates such as isopropyl, butyl, cetyl, 2-octyldodecyl, myristyl or stearyl myristate, hexyl stearate, butyl stearate, isobutyl stearate; dioctyl malate, hexyl laurate, 2-hexyldecyl laurate. In the context of this variant, esters of C₄-C₂₂ dicarboxylic or tricarboxylic acids and esters of Q-C22 alcohols and esters of mono-, di- or tricarboxylic acids and esters of C2-C₂₆ di-, tri-, tetra- or pentahydroxy alcohols may also be used.

The followings may especially be mentioned: diethyl sebacate; diisopropyl sebacate; diisopropyl adipate; di-n-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; triisostearyl citrate; glyceryl trilactate;

glyceryl trioctanoate; trioctyldodecyl citrate; trioleyl citrate; propylene glycol dioctanoate; neopentyl glycol diheptanoate; diethylene glycol diisononanoate; and polyethylene glycol distearates.

Among the esters mentioned above, it is preferable to use ethyl, isopropyl, myristyl, cetyl or stearyl palmitate, 2-ethylhexyl palmitate, 2-octyldecyl palmitate, alkyl myristates such as isopropyl, butyl, cetyl or 2-octyldodecyl myristate, hexyl stearate, butyl stearate, isobutyl stearate; dioctyl malate, hexyl laurate, 2-hexyldecyl laurate, isononyl isononanoate or cetyl octanoate.

The composition may also include, as fatty ester, sugar esters and diesters of C₆-C₃₀, preferably C₁₂-C₂₂, fatty acids. As used herein, the term "sugar" means oxygen-bearing hydrocarbon-based compounds containing several alcohol functions, with or without aldehyde or ketone functions, and which contain at least 4 carbon atoms. These sugars may. be monosaccharides, oligosaccharides or polysaccharides.

Examples of suitable sugars may include, but are not limited to, sucrose (or saccharose), glucose, galactose, ribose, fructose, maltose, mannose, arabinose, xylose and lactose, and derivatives thereof, especially alkyl derivatives, such as methyl derivatives, for instance methylglucose.

The sugar esters of fatty acids may be chosen from the esters or mixtures of esters of sugars described previously and of linear or branched, saturated or unsaturated C₆-C₃₀, preferably C₁₂-C₂2, fatty acids. The unsaturated fatty acids may include one to three conjugated or non-conjugated carbon-carbon double bonds.

The esters may also be selected from mono-, di-, tri-, tetraesters and polyesters, and mixtures thereof. These esters may be selected from, for example, oleates, laurates, palmitates, myristates, behenates, cocoates, stearates, linoleates, linolenates, caprates and arachidonates, or mixtures thereof, in particular, oleo-palmitate, oleo-stearate and palmito- stearate mixed esters.

Examples of monoesters and diesters may include, but are not limited to, sucrose, glucose or methylglucose mono- or dioleates, stearates, behenates, oleopalmitates, linoleates, linolenates and oleostearates. An example that may be mentioned is the product sold under the name Glucate® DO, which is a methylglucose dioleate, by the company Amerchol.

Examples of esters or mixtures of esters of sugar and of fatty acid may include, but are not limited to:

- the products sold under the names Crodesta® F160, F140, Fl 10, F90, F70 and SL40 by the company Croda, respectively denoting sucrose palmitostearates formed from 73 % monoester and 27 % diester and triester, from 61 % monoester and 39 % diester, triester and tetraester, from 52 % monoester and 48 % diester, triester and tetraester, from 45 % monoester and 55 % diester, triester and tetraester, from 39 % monoester and 61 % diester, triester and tetraester, and sucrose monolaurate;

- the products sold under the name RYOTO SUGER ESTERS, for example referenced B370 and corresponding to sucrose behenate formed from 20 % monoester and 80 % di- triester-polyester; and

- the sucrose mono-dipalmito-stearate sold by the company Evonik Goldschmidt under the name TEGOSOFT® PSE.

The silicones that may be used in the alkali-containing composition may be volatile or nonvolatile, cyclic, linear or branched silicones, which are unmodified or modified with organic groups, having a viscosity from 5x10^" to 2.5 m /s at 25 °C.

The silicones that may be used in the alkali-containing composition may be in the form of oils, waxes, resins, or gums. Preferably, the silicones are in the form of oils.

Examples of silicones may include, but are not limited to, polydialkylsiloxanes, such as polydimethylsiloxanes (PDMS), and organomodified polysiloxanes including at least one functional group chosen from poly(oxyalkylene) groups, amino groups, and alkoxy groups.

The organopolysiloxanes are defined in greater detail in Walter Noll's "Chemistry and Technology of Silicones" (1968) Academic Press. They can be volatile or nonvolatile.

Examples of volatile silicones may include, but are not limited to, those having a boiling point ranging from 60 °C to 260 °C, including: cyclic polydialkylsiloxanes having from 3 to 7 or 4 to 5 silicon atoms, such as octamethylcyclotetrasiloxane sold under the name VOLATILE SILICONE® 7207 by the company Union Carbide or SILBIONE® 70045 V 2 by the company Rhodia, decamethylcyclopentasiloxane sold under the name VOLATILE SILICONE® 7158 by the company Union Carbide, and Silbione® 70045 V 5 by the company Rhodia, and mixtures thereof.

Mention may also be made of cyclocopolymers of the

dimethylsiloxane/methylalkylsiloxane type, such as Volatile Silicone® FZ 3109 sold by the company Union Carbide, of formula:

-D"— D' D"—D'-

CH₃

with D": Si— with D': si— O

I

^C8^H17

Mention may also be made of mixtures of cyclic polydialkylsiloxanes with organosilicon compounds, such as the mixture of octamethylcyclotetrasiloxane and tetra- trimethylsilylpentaerythritol (50/50) and the mixture of octamethylcyclotetrasiloxane and oxy-l,r-bis(2,2,2',2',3,3'-hexatrimethylsilyloxy)neopentane.

Another example of volatile silicone includes linear volatile polydialkylsiloxanes having 2 to 9 silicon atoms and having a viscosity of less than or equal to 5><10 m /s at 25 °C. An example is decamethyltetrasiloxane sold in particular under the name SH 200 by the company Toray Silicone. Silicones belonging to this category are also described in the article published in COSMETICS AND TOILETRIES, Vol. 91, Jan. 76, pp. 27-32, Todd & Byers "Volatile Silicone Fluids for Cosmetics."

Nonvolatile polydialkylsiloxanes, polydialkylsiloxane gums and resins,

polyorganosiloxanes modified with organofunctional groups above, and mixtures thereof, may be used.

Examples of silicones may include, but are not limited to, polydialkylsiloxanes, such as polydimethylsiloxanes having trimethylsilyl end groups. The viscosity of the silicones is measured, for example, at 25° C according to ASTM standard 445 Appendix C.

Among these polydialkylsiloxanes, mention may be made, in a nonlimiting manner, of the following commercial products:

- the SILBIONE® oils of the 47 and 70 047 series or the MIRASIL® oils sold by Rhodia, for instance the oil 70 047 V 500 000;

- the oils of the MIRASIL® series sold by the company Rhodia;

- the oils of the 200 series from the company Dow Corning, such as DC200 with a viscosity of 60,000 mm /s; and - the VISCASIL® oils from the company General Electric and certain oils of the SF series (SF 96, SF 18) from the company General Electric.

Mention may also be made of polydimethylsiloxanes having dimethylsilanol end groups known under the name dimethiconol (CTFA), such as the oils of the 48 series from the company R odia.

In this category of polydialkylsiloxanes, mention may also be made of the products sold under the names Abil Wax® 9800 and 9801 by the company Evonik Goldschmidt, which are poly(C₁-C2o)dialkylsiloxanes.

Examples of silicone gums may include, but are not limited to, polydialkylsiloxanes, such as polydimethylsiloxanes with high number-average molecular masses ranging from

200,000 to 1,000,000, used alone or as a mixture in a solvent. Exemplary solvent include, but are not limited to, volatile silicones, polydimethylsiloxane (PDMS) oils,

polyphenylmethylsiloxane (PPMS) oils, isoparaffins, polyisobutylenes, methylene chloride, pentane, dodecane, tridecane, and mixtures thereof.

Examples of mixtures may include, but are not limited to:

- mixtures formed from a polydimethylsiloxane hydroxylated at the chain end, or dimethiconol (CTFA) and from a cyclic polydimethylsiloxane also known as cyclomethicone (CTFA), such as the product Q2 1401 sold by the company Dow Corning;

- mixtures formed from a polydimethylsiloxane gum with 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, dissolved in the oil SF 1202 SILICONE FLUID corresponding to

decamethylcyclopentasiloxane; and

- mixtures of two PDMSs with different viscosities, including mixtures of a PDMS gum and a PDMS oil, such as the product SF 1236 from the company General Electric. The product SF 1236 is a mixture of an SE 30 gum defined above, having a viscosity of 20 m /s, and an SF 96 oil, with a viscosity of 5x 10 Is. This product may include 15% SE 30 gum and 85% SF 96 oil.

The organopolysiloxane resins include crosslinked siloxane systems having the following units:

R₂Si0_{2 2}, R₃Si0_1/2, RS1O3/2 and S1O4/2

where R represents a hydrocarbon-based group having 1 to 16 carbon atoms. R may be a C_\- C₄ lower alkyl radical, such as methyl. Among these resins, mention may be made of 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, which are silicones of dimethyl/trimethyl siloxane structure.

Mention may also be made of the trimethyl siloxysilicate type resins sold, for instance, under the names X22-4914, X21-5034, and X21-5037 by the company Shin-Etsu Silicone.

The organomodified silicones are silicones as described above and including in their structure at least one organofunctional group attached via a hydrocarbon-based radical.

Besides the silicones described above, the organomodified silicones may be polydiarylsiloxanes, including polydiphenylsiloxanes, and polyalkylarylsiloxanes

functionalized with organofunctional groups.

The polyalkylarylsiloxanes may be chosen from linear and/or branched

polydimethyl/methylphenylsiloxanes and polydimethyl/diphenylsiloxanes with a viscosity of from 1 10^"5 to 5 x 10^"2 m²/s at 25 °C.

Examples of polyalkylarylsiloxanes may include, but are not limited to, the products sold under the following names:

- the SILBIONE® oils of the 70 641 series from the company Rhodia;

- the oils of the RHODOURSIL® 70 633 and 763 series from the company Rhodia;

- the oil Dow Corning® 556 Cosmetic Grade Fluid from the company Dow Corning; and

- certain oils of the SF series from the company General Electric, such as SF 1023, SF

1154, SF 1250 and SF 1265.

Among the organomodified silicones, mention may be made of polyorganosiloxanes including:

- polyethyleneoxy and/or polypropyleneoxy groups optionally including C₆-C₂₄ alkyl groups, such as the products known as dimethicone copolyol sold by the company Dow

Corning under the name DC 1248 or the oils SILWET® L 722, L 7500, L 77 and L 71 1 by the company Union Carbide, and the (C₁₂)alkylmethicone copolyol sold by the company Dow Corning under the name Q2 5200; and

- substituted or unsubstituted amine groups, such as the products sold under the name GP 4 Silicone Fluid and GP 7100 by the company Genesee Polymers, or the products sold under the names Q2 8220 and DOW CORNING® 929 or 939 by the company Dow Corning.

The fatty material may be used either singly or in combination two or more thereof.

The fatty material in the alkali-containing composition may include hydrocarbon oil and/or silicone oil. As used herein, "hydrocarbon oil and/or silicone oil" is intended to mean hydrocarbon oil, silicone oil, or a mixture thereof. The hydrocarbon oil may be an oil of plant, animal, mineral, or synthetic origin, or a mixture thereof.

Examples of hydrocarbon oil of animal origin may include squalane and squalene. Examples of hydrocarbon oils of plant origin may include sunflower oil, maize oil, soya oil, marrow oil, grapeseed oil, sesame oil, hazelnut oil, apricot oil, macadamia oil, arafa oil, castor oil, abovado oil, jojoba oil, and shea butter oil. Examples of hydrocarbon oils of mineral or synthetic origin may include liquid paraffins, petroleum jelly, liquid petroleum jelly, polydecenes, and hydrogenated polyisobutene such as PARLEAM®. Among the hydrocarbon oils, mineral oils are preferred.

Examples of silicone oil may include, but are not limited to, linear

organopolysiloxanes such as dimethylpolysiloxanes, methylphenylpolysiloxanes, methylhydrogonpolysiloxanes, and the like; cyclic organopolysiloxanes such as

octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane,

dodecamethylcyclohexasiloxane, and the like; and mixtures thereof.

In one embodiment, the fatty material in the alkali-containing composition may include hydrocarbon oil and/or silicone oil, in which the hydrocarbon oil is other than hydrocarbon oil of plant, animal, mineral, or synthetic origin.

The amount of the fatty material in the alkali-containing composition is preferably from 0.5 % to 20 % by weight, more preferably from 1 % to 10 % by weight, relative to the total weight of the alkali-containing composition.

Preferably, the amount of the hydrocarbon oil and/or mineral oil in the alkali- containing composition is at most 20 % by weight relative to the total weight of the alkali- containing composition. More preferably, the amount of the hydrocarbon oil and mineral oil in the alkali-containing composition is at most 10 % by weight relative to the total weight of the alkali-containing composition.

The amount of the fatty material in the alkali-containing composition is preferably controlled so that the total amount of fatty materials in the cosmetic composition is at least 10 % by weight, preferably at least 15 % by weight, relative to the weight of the cosmetic composition.

(Surfactant) The alkali-containing composition includes at least one surfactant. The surfactant may be nonionic, anionic, cationic, or amphoteric; and may also be organic or inorganic, preferably organic. The surfactant may be used either singly or in combination two or more thereof.

The at least one surfactant in the alkali-containing composition may include at least one nonionic surfactant. For example, the alkali-containing composition may include one nonionic surfactant; or may include two, three, or more of different types of nonionic surfactants.

Various types of nonionic surfactant suitable for cosmetic or dermatological use may be used. Examples of nonionic surfactants are described {see, e.g., in this regard, "Handbook of Surfactants" by M. R. Porter, Blackie & Son publishers (Glasgow and London), 1991, pp. 116-178). Suitable nonionic surfactants can, for example, be chosen from alcohols, alpha-diols, alkylphenols and esters of fatty acids that are polyethoxylated, polypropoxylated or polyglycerolated and have at least one fatty chain including, for example, from 8 to 18 carbon atoms, it being possible for the number of ethylene oxide or propylene oxide groups to range from 2 to 50, and for the number of glycerol groups to range from 2 to 30. Maltose derivatives may also be mentioned. Non-limiting mention may also be made of copolymers of ethylene oxide and/or of propylene oxide; condensates of ethylene oxide and/or of propylene oxide with fatty alcohols; polyethoxylated fatty amides including, for example, from 2 to 30 mol of ethylene oxide; polyglycerolated fatty amides including, for example, from 1 to 5 glycerol groups, such as from 1.5 to 4;

ethoxylated fatty acid esters of sorbitan including from 2 to 30 mol of ethylene oxide;

ethoxylated oils from plant origin; fatty acid esters of sucrose; fatty acid esters of polyethylene glycol; fatty acid mono or diesters of glycerol; (C₆-C₂₄)alkylpolyglucosides; N-(C₆-C₂₄)alkylglucamine derivatives, amine oxides such as (Cio-C₁₄)alkylamine oxides or N- (C₁o-C₁₄)acylaminopropylmorpholine oxides; and mixtures thereof.

The nonionic surfactants may preferably be chosen from oxyalkylenated

(monooxyalkylenated or polyoxyalkylenated), and glycerolated (monoglycerolated or polyglycerolated) nonionic surfactants. The oxyalkylene units are more particularly oxyethylene or oxypropylene units, or a combination thereof, preferably oxy ethylene units.

Examples of oxyalkylenated nonionic surfactants that may be mentioned include: oxyalkylenated (C₈-C24)alkylphenols, saturated or unsaturated, linear or branched, oxyalkylenated C₈-C₃₀ alcohols, saturated or unsaturated, linear or branched,

oxyalkylenated C₈- C₃₀ amides, esters of saturated or unsaturated, linear or branched, C₈-C₃₀ acids and of polyethylene glycols, polyoxyalkylenated esters of saturated or unsaturated, linear or branched, C₈-C₃₀ acids and of sorbitol, saturated or unsaturated, oxyalkylenated plant oils, condensates of ethylene oxide and/or of propylene oxide, inter alia, alone or as mixtures.

The surfactants contain a number of moles of ethylene oxide and/or of propylene oxide of between 1 and 100 and preferably between 2 and 50. Advantageously, the nonionic surfactants do not include any oxypropylene units.

According to one aspect of the present invention, preferably, the oxyalkylenated nonionic surfactants may be chosen from polyoxyethylenated fatty alcohols and

polyoxyethylenated fatty esters, preferably polyoxyethylenated fatty alcohols (i.e.

polyethylene glycol ether of fatty alcohols).

Examples of polyoxyethylenated fatty alcohols, preferably C₈-C₃₀ fatty alcohols, that may be mentioned include the adducts of ethylene oxide with lauryl alcohol, especially those containing from 9 to 50 oxyethylene groups and more particularly those containing from 10 to 30 oxyethylene groups (Laureth-10 to Laureth-30, as the CTFA names); the adducts of ethylene oxide with decyl alcohol, especially those containing from 3 to 50 oxyethylene groups (Deceth-3 to Deceth-50, as the CTFA names); the adducts of ethylene oxide with oleyl alcohol, especially those containing from 9 to 50 oxyethylene groups (Oleth-9 to Oleth-50, as the CTFA names); the adducts of ethylene oxide with behenyl alcohol, especially those containing from 9 to 50 oxyethylene groups (Beheneth-9 to Beheneth-50, as the CTFA names); the adducts of ethylene oxide with cetearyl alcohol (mixture of cetyl alcohol and stearyl alcohol), especially those containing from 10 to 50 oxyethylene groups (Ceteareth-10 to Ceteareth-50, such as Ceteareth-33, as the CTFA names); the adducts of ethylene oxide with cetyl alcohol, especially those containing from 10 to 50 oxyethylene groups (e.g., Ceteth-10 to Ceteth-30, as the CTFA names); the adducts of ethylene oxide with stearyl alcohol, especially those containing from 10 to 50

oxyethylene groups (e.g., Steareth-10 to Steareth-30, such as Steareth-20, as the CTFA names); the adducts of ethylene oxide with isostearyl alcohol, especially those containing from 10 to 50 oxyethylene groups (Isosteareth-10 to Isosteareth-50, as the CTFA names); and mixtures thereof.

As examples of monoglycerolated or polyglycerolated nonionic surfactants, monoglycerolated or polyglycerolated C₈-C₄₀ alcohols are preferably used. In particular, the monoglycerolated or polyglycerolated C₈-C₄₀ alcohols are represented by the following formula: RO-[CH₂-CH(CH₂OH)-0]_m-H or RO-[CH(CH₂OH)-CH₂0]_m-H

in which R is a linear or branched C₈-C₄₀ and preferably C₈-C₃₀ alkyl or alkenyl radical, and m is a number ranging from 1 to 30 and preferably from 1 to 10.

Alkyl polyglucosides that are preferably used in the present invention may include those containing an alkyl group having from 6 to 30 carbon atoms, preferably from 8 to 16 carbon atoms, more preferably from 8 to 14 carbon atoms, and containing a hydrophilic group (glucoside) preferably comprising 1.2 to 3 glucoside units. Examples of alkyl polyglucosides may include, but are not limited to, decylglucoside (Alkyl-C9/Cl 1- polyglucoside (1.4)) for instance the product sold under the name Mydol 10®, the product sold under the name Plantaren 2000 UP®, and the product sold under the name Oramix NS 10®; caprylyl/capryl glucoside, for instance the product sold under the name Oramix CG 110®; lauryl glucoside, for instance the products sold under the names Plantaren 1200 N® and Plantacare 1200®; and cocoglucoside, for instance the product sold under the name Plantacare 818 UP®. The alkyl polyglucosides may be used alone, or in combination with different alkyl polyglucosides.

Among the nonionic surfactants, polyoxyalkylenated nonionic surfactants are preferred. The at least one surfactant in the alkali-containing composition may be polyoxyethylenated fatty alcohol. Alternatively, the at least one surfactant in the alkali- containing composition may be alkyl polyglucoside. The combinations of

polyoxyethylenated fatty alcohol and alkyl polyglucoside may also be used.

The alkali-containing composition may include at least one nonionic surfactant and at least one anionic, cationic, or amphoteric surfactant. The alkali-containing composition may include at least one nonionic surfactant and at least one cationic surfactant. Various types of anionic, cationic, or amphoteric surfactants that are suitably used in cosmetic or dermatologic compositions may be utilized.

The amount of the surfactant in the alkali-containing composition is preferably from 5 to 70 % by weight, more preferably from 10 to 60 % by weight, even more preferably from 15 to 50 % by weight, relative to the total weight of the alkali-containing composition.

The amount in weight percent of the at least one surfactant in the alkali-containing composition may be not less than, preferably greater than, the amount in weight percent of the at least one fatty material in the alkali-containing composition. For example, in the alkali-containing composition, the amount in weight percent of the at least one surfactant may be at least twice, preferably at least three times, of the amount in weight percent of the at least one fatty material. The amount in weight percent of the at least one surfactant in the alkali-containing composition may be more than five times of the amount in weight percent of the at least one fatty material in the alkali-containing composition. Preferably, in the alkali-containing composition, the amount of the at least one surfactant is from 10 % by weight to 50 % by weight, when the amount of the at least one fatty material is from 3 % by weight to 10 % by weight. If the amount in weight percent of the at least one surfactant in the alkali-containing composition is less than the amount in weight percent of the at least one fatty material in the alkali-containing composition, the cosmetic composition may not have an adequate viscosity upon mixing with the developer composition. (Oxidative dye)

The alkali-containing composition may further include at least one oxidative dye, at least one direct dye, or a mixture thereof. The direct dye may be an anionic dye, a nonionic dye, or a cationic dye. When oxidative dye and/or direct dye are included, the cosmetic composition may work as a hair color composition. Without oxidative dye and/or direct dye, the cosmetic composition may work as a hair bleach composition.

The oxidative dyes can be utilized alone or in combination with different kinds of oxidative dyes. The oxidative dyes can be activated and can react with other molecules to form colored complexes which deliver permanent colors to hair. The oxidative dye may include oxidation bases and couplers.

The alkali-containing composition may include at least one oxidative dye. The oxidative dyes may be chosen from one or more oxidation bases optionally combined with one or more couplers.

The oxidation bases are selected from, for example, paraphenylenediamines, bis(phenyl)alkylenediamines, para-aminophenols,ortho-aminophenols and heterocyclic bases, and the addition salts thereof.

Among the para-phenylenediamines that may be mentioned, for example, are para- phenylenediamine, para-tolylenediamine, 2-chloro-para-phenylenediamine, 2,3-dimethyl- para-phenylenediamine, 2,6-dimethyl-para-phenylenediamine, 2,6-diethyl- paraphenylenediamine, 2,5-dimethyl-para-phenylenediamine, N,N-dimethyl-para- phenylenediamine, Ν,Ν-diethyl-para-phenylenediamine, N,N-dipropyl-para- phenylenediamine, 4-amino-N,N-diethyl-3 -methylaniline, N,N-bis( -hydroxyethyl)-para- phenylenediamine, 4- N,N-bis(p-hydroxyethyl)amino-2-methylaniline, 4-N,N-bis(p- hydroxyethyl)amino-2-chloroaniline, 2-P-hydroxyethyl-paraphenylenediamine, 2-fluoro- para-phenylenediamine, 2-isopropylpara-phenylenediamine, N-( -hydroxypropyl)-para- phenylenediamine, 2-hydroxymethyl-para-phenylenediamine, N,N-dimethyl-3 -methyl- paraphenylenediamine, N-ethyl-N-(P-hydroxyethyl)-para-phenylenediamine, Ν-(β,γ- dihydroxypropyl)-para-phenylenediamine, N-(4 ' -aminophenyl)-para-phenylenediamine, N- phenyl-para-phenylenediamine, 2-P-hydroxyethyloxy-para-phenylenediamine, 2-β- acetylaminoethyloxy-paraphenylenediamine, N-(P-methoxyethyl)-para-phenylenediamine, 4-aminophenylpyrrolidine, 2-thienyl-para-phenylenediamine, 2-p-hydroxyethylamino-5- aminotoluene and 3-hydroxy-l-(4'-aminophenyl)-pyrrolidine, and the addition salts thereof with an acid.

Among the para-phenylenediamines mentioned above, paraphenylenediamine, para- tolylenediamine, 2-isopropyl-para-phenylenediamine, 2-P-hydroxyethyl-para- phenylenediamine, 2-P-hydroxyethyloxy-para-phenylenediamine, 2,6-dimethyl-para- phenylenediamine, 2,6-diethyl-para-phenylenediamine, 2,3-dimethyl-para- phenylenediamine, N,N-bis(P-hydroxyethyl)-para-phenylenediamine, 2-chloropara- phenylenediamine and 2- -acetylaminoethyloxy-para-phenylenediamine, and the addition salts thereof with an acid, are particularly preferred.

Among the bis(phenyl)alkylenediamines that may be mentioned, for example, are Ν,Ν' -bis( -hydroxyethyl)-N,N' -bis(4 ' -aminophenyl)- 1 ,3 -diaminopropanol, Ν,Ν' -bis(P- hydroxyethyl)-N,N' -bis(4' -amino phenyl)ethylenediamine, Ν,Ν' -bis(4- aminophenyl)tetramethylenediamine, N,N'-bis( -hydroxyethyl)-N,N'-bis(4- aminophenyl)tetramethylenediamine, N,N'-bis(4- methylaminophenyl)tetramethylenediamine, N,N'-bis(ethyl)-N,N'-bis(4'-amino-3 '- methylphenyl)ethylenediamine and l,8-bis(2,5-diaminophenoxy)-3,6-dioxaoctane, and the addition salts thereof.

Among the para-aminophenols that may be mentioned, for example, are para- aminophenol, 4-amino-3-methylphenol, 4-amino-3-fluorophenol, 4-amino-3-chlorophenol, 4-amino-3 -hydroxymethylphenol,4-amino-2-methylphenol, 4-amino-2- hydroxymethylphenol, 4-amino-2-methoxymethylphenol, 4-amino-2-aminomethylphenol, 4-amino-2-(P-hydroxyethylaminomethyl)phenol and 4-amino-2-fluorophenol, and the addition salts thereof with an acid.

Among the ortho-aminophenols that may be mentioned, for example, are 2- aminophenol, 2-amino-5-methylphenol, 2-amino-6-methylphenoland 5-acetamido-2- aminophenol, and the addition salts thereof. Among the heterocyclic bases that may be mentioned, for example, are pyridine derivatives, pyrimidine derivatives and pyrazole derivatives.

Among the pyridine derivatives that may be mentioned are the compounds described, for example, in patents GB 1 026 978 and GB 1 153 196, for instance 2,5-diaminopyridine, 2-(4-methoxyphenyl) amino-3-aminopyridine and 3,4-diaminopyridine, and the addition salts thereof. Other pyridine oxidation bases that may be utilized include the 3- aminopyrazolo[l,5-a]pyridine oxidation bases or addition salts thereof described, for example, in patent application FR 2 801 308. Examples that may be mentioned include pyrazolo[l ,5-a]pyrid-3-ylamine, 2-acetylaminopyrazolo[l ,5-a]pyrid-3-ylamine, 2- morpholin-4-ylpyrazolo [ 1 ,5 -a]pyrid-3 -ylamine, 3 -aminopyrazolo [ 1 ,5-a]pyridine-2- carboxylic acid, 2-methoxypyrazolo[l,5-a]pyrid-3 -ylamine, (3-aminopyrazolo[l,5-a]pyrid- 7-yl)methanol, 2-(3 -aminopyrazolo [1 ,5-a]pyrid-5-yl)ethanol,2-(3-aminopyrazolo[l ,5- a]pyrid-7-yl)ethanol, (3-aminopyrazolo[l,5-a]pyrid-2-yl)methanol, 3,6- diaminopyrazolo[l,5-a]pyridine, 3,4-diaminopyrazolo[l,5-a]pyridine, pyrazolo[l,5- a]pyridine-3,7-diamine, 7-mo holin-4-ylpyrazolo[l,5-a]pyrid-3-ylamine,pyrazolo[l,5- a]pyridine-3,5-diamine, 5-morpholin-4-ylpyrazolo[l,5-a]pyrid-3-ylamine, 2-[(3- aminopyrazolo[l,5-a]pyrid-5-yl)(2-hydroxyethyl)amino]ethanol,2-[(3-aminopyrazolo[l,5- a]pyrid-7-yl)(2-hydroxyethyl)amino]ethanol, 3 -aminopyrazolo [1 ,5-a]pyridin-5-ol, 3- aminopyrazolo[l,5-a]pyridin-4-ol, 3-aminopyrazolo[l,5-a]-pyridin-6-ol and 3- aminopyrazolo[l,5-a]pyridin-7-ol, and the addition salts thereof. Among the pyrimidine derivatives that may be mentioned are the compounds described, for example, in patents DE 2 359 399; JP 88-169 571; JP 05-63124; EP 0 770 375 or patent application W096/15765, for instance 2,4,5, 6-tetraaminopyrimidine, 4-hydroxy-2,5,6-triaminopyrimidine, 2-hydroxy- 4,5,6-triaminopyrimidine, 2,4-dihydroxy-5,6-diaminopyrimidine and 2,5,6- triaminopyrimidine, and the addition salts thereof, and the tautomeric forms thereof, when a tautomeric equilibrium exists.

Among the pyrazole derivatives that may be mentioned are the compounds

described in DE 3 843 892 and DE 4 133 957, and WO 94/08969, WO 94/08970, FR-A-2 733 749 and DE 195 43 988, for instance, 4,5-diamino-l-methylpyrazole, 4,5-diamino-l -(β- hydroxyethyl)pyrazole, 3,4-diaminopyrazole, 4,5- diamino-l-(4'-chlorobenzyl)pyrazole,

4,5-diamino-l,3-dimethylpyrazole, 4,5-diamino-3 -methyl- 1 -phenylpyrazole, 4,5-diamino-l- . methyl-3 -phenylpyrazole, 4-amino- 1 ,3 -dimethyl-5 -hydrazinopyrazole, 1 -benzyl -4,5 - diamino-3-methylpyrazole, 4,5-diamino-3-tert-butyl- 1 -methylpyrazole, 4,5-diamino- 1 -tert- butyl-3-methylpyrazole, 4,5 -diamino-l-(P-hydroxyethyl)-3 -methylpyrazole, 4,5-diamino-l- ethyl-3 -methylpyrazole, 4,5-diamino- 1 -ethyl-3-(4 ' -methoxyphenyl)pyrazole,4,5-diamino- 1 - ethyl-3-hydroxymethylpyrazole, 4,5-diamino-3-hydroxymethyl-l -methylpyrazole, 4,5- diamino-3-hydroxymethyl-l-isopropylpyrazole, 4,5-diamino-3-methyl-l-isopropylpyrazole, 4- amino-5-(2'-aminoethyl)amino-l,3-dimethylpyrazole, 3,4,5-triaminopyrazole, 1-methyl- 3,4,5-triaminopyrazole, 3,5-diamino-l -methyl -4-methylaminopyrazole and 3,5-diamino-4- (P-hydroxyethyl)amino-l -methylpyrazole, and the addition salts thereof. 4,5-Diamino-l-(P- methoxyethyl)pyrazole may also be used.

A heterocyclic base that may also be used is 2,3-diamino-6,7- dihydro-lH,5H- pyrazolo[l,2-a]pyrazol-l-one or a salt thereof.

The alkali-containing composition may optionally include one or more couplers advantageously chosen from those used in the dyeing of keratin fibers. Among these couplers, mention may be made especially of metaphenylenediamines, meta-aminophenols, meta-diphenols, naphthalenebased couplers and heterocyclic couplers, and also the addition salts thereof. Mention may be made, for example, of 1,3-dihydroxybenzene, 1,3-dihydroxy- 2-methylbenzene, 4-chloro- 1,3-dihydroxybenzene, 2,4- diamino-l-( - hydroxyethyloxy)benzene, 2-amino-4-(P-hydroxyethylamino) 1 -methoxybenzene, 1 ,3- diaminobenzene, l,3-bis(2,4-diaminophenoxy)propane, 3-ureidoaniline, 3-ureido-l- dimethylaminobenzene, sesamol, l- -hydroxyethylamino-3,4 methylenedioxybenzene, a- naphthol, 2-methyl-l-naphthol, 6-hydroxyindole, 4-hydroxyindole, 4-hydroxy-N- methylindole, 2-amino-3-hydroxypyridine, 6-hydroxybenzomorpholine, 3,5-diamino-2,6- dimethoxypyridine, 1 -N-(P-hydroxyethyl)amino-3,4-methylenedioxybenzene, 2,6-bis(P- hydroxyethylamino)toluene,6-hydroxyindoline, 2,6-dihydroxy-4-methylpyridine, 1 -H-3- methylpyrazo-5-one, l-phenyl-3-methylpyrazol-5-one, 2,6-dimethylpyrazolo[l,5-b]-l,2,4- triazole, 2,6-dimethyl[3,2-c]-l,2,4-triazole and 6-methylpyrazolo[l,5-a]benzimidazole, the addition salts thereof with an acid, and mixtures thereof. In general, the addition salts of the oxidation bases and couplers that may be used are especially chosen from the addition salts with an acid such as the hydrochlorides, hydrobromides, sulfates, citrates, succinates, tartrates, lactates, tosylates, benzenesulfonates, phosphates and acetates.

If present, the amount of the oxidation base(s) is controlled so that each oxidation base is present from 0.0001 % by weight to 10 % by weight relative to the weight of the cosmetic composition, and preferably from 0.005 % by weight to 5 % by weight relative to the weight of the cosmetic composition.

If present, the amount of the coupler(s) is controlled so that each coupler is present from 0.0001 % by weight to 10 % by weight relative to the weight of the cosmetic composition, and preferably from 0.005 % by weight to 5 % by weight relative to the weight of the cosmetic composition.

Any combinations of the oxidation bases and couplers may be utilized. Generally, the combinations of the oxidation bases and couplers determine the color of the complex of these molecules, which then determine the resulting color of the hair.

The alkali-containing composition may be in the form suitable for preparing cosmetic compositions for keratin fibers, including, but not limited to, liquid, cream, gel, and paste. Preferably, the viscosity of the alkali-containing composition is sufficiently low so that the alkali-containing composition can be readily mixed with the developer

composition. The viscosity of the alkali-containing composition may be less than 500 mPa s before being mixed with the developer composition. Preferably, the viscosity of the alkali-containing composition is less than 500 mPa-s, preferably from 5 mPa s to 300 mPa-s, more preferably from 10 mPa s to 200 mPa s, before being mixed with the developer composition.

(ii) Developer composition (Oxidizing agent) The developer composition includes at least one oxidizing agent. Various oxidizing agents that may be desirably used for cosmetic or dermatological compositions may be utilized. The oxidizing agents may facilitate dispersion and/or solubilization of natural pigments in keratin fibers, or melanin, and catalyze the oxidation of the oxidative dyes.

The oxidizing agent may be chosen from peroxides, persulfates, perborates, percarbonates, peracids, bromates, and salts and mixtures thereof.

Examples of oxidizing agent may include, but are not limited to, hydrogen peroxide, urea peroxide, alkali metal bromates or ferricyanides, peroxigenated salts such as

persulfates, perborates, alkali metal or alkali earth metal percatbonates, and also peracids and precursors thereof.

The at least one oxidizing agent may be chosen from, for example, hydrogen peroxide, urea peroxide, and alkali metal bromates.

The oxidizing agent can be used alone or in combination with different oxidizing agents. The amount of the oxidizing agent may be from 0.1 to 12 % by weight relative to the total weight of the developer composition. Preferably, the amount of the oxidizing agent is controlled so that the amount is from 0.1 to 12 % by weight, relative to the weight of the cosmetic composition.

(Fatty material)

The developer composition includes at least one fatty material. The fatty material that can be used in the alkali-containing composition as described above may also be utilized as the fatty material in the developer composition. The same type of fatty material or the same combination of fatty materials as in the alkali-containing composition may be used as the fatty material(s) in the developer composition. A different type of fatty material or different combinations of fatty materials may be used as the fatty material in the developer composition.

The at least one fatty material in the developer composition may include

hydrocarbon oil, silicone oil, or a mixture thereof. The hydrocarbon oil may be plant, animal, mineral, or synthetic origin, or a mixture thereof. Examples of hydrocarbon oil and silicone oil are described above. Among the hydrocarbon oils, mineral oils are preferred.

Preferably, the amount of the fatty material in the developer composition is at least 10 % by weight, preferably at least 15 % by weight, more preferably at least 20 %, and even more preferably at least 25 % by weight relative to the total weight of the developer composition. It may range for example from 10 to 60 % by weight, preferably from 15 to 40 % by weight, relative to the total weight of the developer composition.

Preferably, the amount of the fatty material in the developer composition is adjusted so that the total amount of the fatty materials in the cosmetic composition is at least 10 % by weight, preferably at least 15 % by weight, relative to the weight of the cosmetic

composition.

(Surfactant)

The developer composition may include the at least one oxidizing agent, the at least one fatty material, and at least one surfactant. The surfactants that can be used in the alkali- containing composition as described above may also be utilized as a surfactant in the developer composition. The same type of surfactant or the same combination of surfactants as in the alkali-containing composition may be used as the surfactant in the developer composition. A different type of surfactant or different combinations of surfactants may be used as the surfactant in the developer composition.

The total amount of the surfactant in the developer composition may be from 0.1 to 20 % by weight, preferably from 5 to 15 % by weight, of the total weight of the developer composition.

The developer composition may be in the form suitable for preparing cosmetic compositions for keratin fibers, including, but not limited to, liquid, cream, gel, and paste. Preferably, the viscosity of the developer composition is sufficiently low so that the developer composition can be readily mixed with the alkali-containing composition. The viscosity of the developer composition may be less than 3,000 mPa-s, preferably less than 1,000 mPa-s, more preferably less than 100 mPa s, before being mixed with the alkali- containing composition.

Optionally, the oxidizer composition may further include at least one thickening agent. The thickening agent may be organic or inorganic, preferably organic polymers.

Examples of the thickening agents include, but not limited to, polymeric thickening agents such as cellulose compounds (hydroxyethylcellulose, hydroxypropylcellulose, or carboxymethylcellulose), starches, natural gums (plant-derived gums such as guar gum, or gums of microbial origin such as xanthan gum), galactans, and the like.

If present, the amount of the thickening agent may range from 0.01 % by weight to

10 % by weight, relative to the total weight of the developer composition. The amount of the thickening agent may be from 0.01 % to 5 % by weight, relative to the weight of the cosmetic composition. (Cosmetic composition)

The cosmetic composition is prepared by mixing the aforementioned alkali- containing composition and the developer composition just prior to use. The cosmetic composition resulting from the mixing of the two compositions is applied to keratin fibers such as human hair.

For practical reasons, the mixing ratio (by weight) of the alkali-containing composition and the developer composition is preferably from 1 :0.2 to 1 :5, more preferably 1 :0.5 to 1:3. The cosmetic composition preferably has a suitable viscosity for application onto hair. The viscosity of the cosmetic composition at room temperature may be 1,000 mPa s or more, preferably from 1,500 mPa s to 30,000 mPa-s, more preferably from 2,000 mPa s to 20,000 mPa-s.

The viscosity of the cosmetic composition may be more than 5 times, preferably more than 10 times, more preferably more than 20 times, as high as the viscosities of the alkali-containing composition, developer composition, or both.

The total amount of fatty materials in the cosmetic composition is preferably at least 10% by weight, more preferably at least 15 % by weight, relative to the weight of the cosmetic composition. Preferably, the total amount of fatty materials in the cosmetic composition does not exceed 50 % by weight, preferably 40 % by weight, relative to the weight of the cosmetic composition. Here, the "total amount of fatty materials in the cosmetic composition" is intended to mean the sum of the weights of the fatty materials included in the alkali-containing composition and the developer composition. If the total amount of fatty materials in the cosmetic composition is less than 10 % by weight, a desired viscosity may not be obtained, resulting in poor coloring results.

The cosmetic composition may include, as the fatty material, hydrocarbon oil and/or silicone oil. In such compositions, the total amount of hydrocarbon oil and silicone oil in the cosmetic composition may be at least 10 % by weight, preferably at least 15 % by weight, preferably at least 17 % by weight, relative to the weight of the cosmetic composition. Here, the "total amount of hydrocarbon oil and silicone oil in the cosmetic composition" is intended to mean the amount of the hydrocarbon oil and silicone oil included in the alkali-containing composition and the developer composition.

The amount of mineral oil in the cosmetic composition may be at least 10 % by weight, preferably at least 15 % by weight, relative to the weight of the cosmetic composition.

Preferably, in the cosmetic composition, the amount of the surfactants is at least 15 % by weight relative to the weight of the cosmetic composition. More preferably, the amount of nonionic surfactant in the cosmetic composition is from 10 % by weight to 40 % by weight, more preferably from 15 % to 30 % by weight, relative to the weight of the cosmetic composition. The cosmetic composition may further include from 0.1 % to 10 % by weight, preferably from 1 % to 5 % by weight, of cationic, anionic, or amphoteric surfactant, relative to the weight of the cosmetic composition. In the cosmetic composition, the weight ratio of the total amount of surfactants in the cosmetic composition to the total amount of fatty materials in the cosmetic composition may be 0.7 or more, preferably 0.8 or more, even more preferably 1.0 or more, and preferably 5.0 or less. Preferably, the weight ratio of the total amount of surfactants in the cosmetic composition to the total amount of fatty materials in the cosmetic composition does not exceed three. As used herein, the "total amount of surfactants" and "total amount of fatty materials" mean the sum of the weights of the surfactants and fatty materials, respectively, included in the alkali-containing composition and the developer composition. If the weight ratio of the surfactants to the fatty materials is less than 0.7, the cosmetic composition may not have a sufficient viscosity upon mixture.

Preferably, in the cosmetic composition, the weight ratio of the total amount of the nonionic surfactant in the cosmetic composition to the total amount of the fatty materials in the cosmetic composition may be 0.7 or more, preferably 0.8 or more, even more preferably 1.0 or more, and preferably 5.0 or less. Also, in the cosmetic composition, the weight ratio of the total amount of the nonionic surfactant in the cosmetic composition to the total amount of the hydrocarbon oil and silicone oil in the cosmetic composition may be 0.7 or more, preferably 0.8 or more, even more preferably 1.0 or more, and preferably 5.0 or less.

The cosmetic composition may include a small amount of aqueous ammonia.

However, preferably, the cosmetic composition does not include aqueous ammonia.

The cosmetic composition may have a suitable color and form. For example, the cosmetic composition may be in a form of liquid, gel, cream, and the like. The cosmetic composition may be macroscopically translucent or transparent, or macroscopically opaque. Preferably, the cosmetic composition is macroscopically translucent or transparent, more preferably transparent. As used herein, "macroscopically translucent" is intended to mean that at least a part of visible light can penetrate through the object without being scattered or reflected. "Macroscopically transparent" is intended to mean that a substantial part of visible light can penetrate through the object without being scattered or reflected. Further, "macroscopically opaque" is intended to mean that substantially all of visible light does not penetrate through the object.

Preferably, upon mixture of the alkali-containing composition and the developer composition, the mixture forms a viscous solution. The viscous solution may be liquid crystal, which may have a lamellar structure.

(Additional Ingredients) The cosmetic composition may also include various additives desirably used in cosmetic or dermatological compositions. For example, dispersants, anti-oxidants, pH adjusters, preservatives, neutralizing agents, fragrances, fillers, cosmetic and dermatological active agents such as, for example, emollients, moisturizers, vitamins, UV filters, and sunscreens, and mixtures thereof can be added. A non-exhaustive listing of such

ingredients can be found in the CTFA International Cosmetic Ingredient Dictionary and Handbook, Fourteenth Edition (2012). Such additional ingredients, if any, may be present in the alkali-containing composition, developer composition, or both.

Examples of additional ingredients include water and/or one or more organic solvents. Suitable organic solvents can be selected based on the intended use, and the organic solvent is preferably water-miscible. Examples of organic solvents may include, but not limited to: alcohols such as alcohol denat, benzyl alcohol, isopropylalcohol, ethyl alcohol, phenylethyl alcohol; glycols or glycol ethers such as propylene glycol,

butoxydiglycol, ethoxydiglycol, hexylene glycol, butylene glycol, dipropylene glycol, and propylene glycol monomethyl ether; analogous products thereof; and mixtures thereof. The organic solvents and water may be used alone, or in combination two or more thereof.

The organic solvent may be present in an amount ranging from 1 % to 60 % by weight, relative to the weight of the cosmetic composition. The organic solvent may be present in the alkali-containing composition, developer composition, or both.

One skilled in the art will take care to select the optional additional additives and/or the amount thereof such that the advantageous properties of the compositions according to the invention are not, or are not substantially, adversely affected by the envisaged addition. Preferably, the cosmetic composition is completely free of aqueous ammonia.

These substances may be selected variously by one skilled in the art to prepare a composition which has the desired properties, for example, consistency or texture.

These additives may be present in the composition in a proportion of from 0 % to 99 % by weight (such as from 0.01 % to 90 % by weight) relative to the weight of the cosmetic composition, or from 0.1 % to 50 % by weight (if present).

(Process)

One aspect of the present invention provides a process including: mixing the aforementioned (i) alkali-containing composition and (ii) developer composition, to prepare a cosmetic composition; and applying the cosmetic composition to a desired area of keratin fibers. The resulting mixture is applied to the desired area(s) of keratin fibers in an amount sufficient to change the color of the keratin fibers.

The alkali-containing composition and the developer composition may be mixed in a container. Preferably, the alkali-containing composition and the developer composition are mixed until the compositions are evenly mixed.

The alkali-containing composition and the developer composition may be mixed for less than 5 min, preferably less than 1 min.

For practical reasons, the mixing ratio (by weight) of the alkali-containing

composition to the developer composition is preferably from 1 :0.2 to 1 :5, more preferably from 1:0.5 to 1 :3.

The interval between the mixing and application to the keratin fibers may be less than 30 minutes. Preferably, the interval is less than 20 minutes, more preferably less than 10 minutes.

The resulting mixture is applied to keratin fibers at a temperature of from 5 °C to

60 °C, preferably at room temperature. The composition is applied in an amount sufficient to change a color of the keratin fibers. The amount of the composition applied to the keratin fibers may vary depending on factors such as the length and the volume of the keratin fibers, but the sufficient amount to change the color and obtain intended bleaching or coloring results of the keratin fibers is to apply the composition such that the weight ratio of the keratin fibers to the composition applied to the keratin fibers is from 1 :0.05 to 1 :5. The mixture may be left on the desired area(s) of keratin fibers for from 1 to 60 minutes, preferably from 5 to 40 minutes. Such time should be sufficient to change the color of the keratin fibers. Such time may be controlled depending on, for example, the original color, desired resulting color, or thickness of keratin fibers on which the resulting mixture is applied.

After the application of the mixture, the keratin fibers may be rinsed with water, shampooed, and then dried.

Preferably, the keratin fibers are human keratin fibers such as hair.

(Kit)

One aspect of the present invention provides a kit (and/or a prepackaged material suitable for consumer use) including the aforementioned (i) alkali-containing composition and (ii) developer composition. The alkali-containing composition and the developer composition form a cosmetic composition upon mixture. The alkali-containing composition and the developer composition may be contained in separate containers or a multicompartment container, so that the compositions are stored separately from one another. Such containers are intended to be opened by the user, and contents of which are mixed by the user just before use in order to prepare a cosmetic composition for keratin fibers.

At least one of the containers containing the alkali-containing composition and the developer composition may be equipped with one or more members that can be used to apply the mixed composition onto keratin fibers such as hair. Examples of such a member may include a nozzle and a comb.

The following examples are intended to illustrate the invention without limiting the scope as a result. The percentages are given on a weight basis, unless indicated otherwise.

Notwithstanding that the numerical ranges and parameters setting forth the broad scope of the invention are approximations, the numerical values set forth in the specific examples are reported as precisely as possible. Any numerical value, however, inherently contain errors necessarily resulting from the standard deviation found in their respective measurements.

EXAMPLES

Hair Bleach Compositions

Preparation of (i) alkali-containing compositions and (ii) developer compositions The following (i) alkali-containing compositions (A to D) and (ii) developer compositions (E to G) were prepared from compositions shown in Tables 1 and 2. Table 1 : (i) Alkali-containing Compositions

Table 2: (ii) Developer Compositions

*"Cetearyl Alcohol and Ceteareth-25" includes 80 % of cetearyl alcohol and 20 % of ceteareth-25 Preparation of hair bleach compositions

Each of the (i) alkali-containing composition and (ii) developer composition was mixed to prepare hair bleach compositions of inventive examples (Example 1 to Example 4) and comparative examples (Comparative Examples 1 to Comparative Example 6). The mixing ratios of the (i) alkali-containing composition and (ii) developer composition to prepare each mixture composition are shown in Table 3.

Evaluation 3 grams of the mixed composition were applied to 1 gram of Chinese black hair swatches and left for 30 minutes at the temperature of 27 °C. The hair swatches were then rinsed with tap water, shampooed and thoroughly dried. Then, bleach effect and adherence on hair of each mixture composition were evaluated by visual observation by 3 experienced researchers. Each evaluation was conducted according to the following criteria. The results are shown in Table 3.

(1) Bleach effect

+++ Excellent

++ Good

+ Poor

na Evaluation has not been done

(2) Adherence on hair

+++ Excellent: The mixed composition did not drip off from the vertically upheld hair swatches for 1 minute

++ Good : The mixed composition dripped off from the vertically upheld hair swatches within 30 seconds

+ Poor : The mixed composition dripped off from the vertically upheld hair swatches within 10 seconds

Table 3

Table 3 also shows: (a) total amount in weight percent of surfactants relative to the weight of the mixture composition; (b) total amount in weight percent of nonionic surfactants relative to the weight of the mixture composition; (c) total amount in weight percent of fatty materials relative to the weight of the mixture composition; the ratio of (a) to (c) (i.e., (a)/(c)); and the ratio of (b) to (c) (i.e., (b)/(c)).

As shown in Table 3, the compositions of the inventive examples (Examples 1 to 4) showed excellent adherence on hair and stayed on hair for sufficient amount of time to achieve excellent bleaching effects. The compositions of Examples 1 to 4 did not have unpleasant odor.

Comparative Examples 1 to 3, which include a sufficient amount of fatty materials, did not stay on hair for sufficient amount of time and showed poor bleach effects. Such poor results may be caused due to low amount of surfactants relative to the amount of fatty materials. As shown by Comparative Examples 4 and 5, deficiencies of fatty materials in the mixture composition may also result in poor bleaching performance.

Further, viscosities of the compositions were examined using Brookfield Viscometer (Shibaura system, VS-Al). The viscosities of the alkali-containing composition D and the developer composition G were 97.5 mPa s and 46.5 mPa s, respectively, prior to being mixed together. Upon mixing the compositions D and G at a ratio of 1 : 1.5, the viscosity was 2,900 mPa-s. The resulting mixture formed liquid crystal.

Claims

What is claimed is:

1 : A cosmetic composition for keratin fibers comprising:

(i) an alkali-containing composition comprising at least one alkaline agent, at least one fatty material, and at least one surfactant, wherein an amount in weight percent of the at least one surfactant in the alkali-containing composition is greater than an amount in weight percent of the at least one fatty material in the alkali-containing composition; and

(ii) a developer composition comprising at least one oxidizing agent, at least one fatty material, and optionally at least one surfactant;

wherein:

a total amount of fatty materials in the cosmetic composition is at least 10 % by weight relative to a weight of the cosmetic composition; and

a weight ratio of a total amount of surfactants in the cosmetic composition to the total amount of the fatty materials in the cosmetic composition is 0.7 or more.

2: The cosmetic composition of claim 1, wherein the at least one alkaline agent is selected from the group consisting of an organic base, an inorganic base, a salt thereof, and a mixture thereof.

3: The cosmetic composition of claims 1 or 2, wherein the at least one alkaline agent is an alkanolamine, preferably monoethanolamine or 2-amino-2-methyl-l-propanol.

4: The cosmetic composition of any one of claims 1 to 3, wherein the at least one surfactant in the alkali-containing composition is a nonionic surfactant, preferably selected from the group consisting of polyoxyethylenaetd fatty alcohol and alkyl polyglucoside.

5: The cosmetic composition of any one of claims 1 to 4, wherein the cosmetic composition has a viscosity of 1,000 mPa-s or more, preferably from 1,500 mPa s to 30,000 mPa- s, and more preferably from 2,000 to 20,000 mPa- s.

6. The cosmetic composition of claim 5, wherein the alkali-containing composition has a viscosity of less than 500 mPa s, preferably from 5 mPa s to 300 mPa-s, and more preferably from 10 mPa-s to 200 mPa-s, prior to being mixed with the developer composition.

7: The cosmetic composition of any one of claims 1 to 6, wherein the at least one fatty material in the alkali-containing composition, the at least one fatty material in the developer composition, or both, comprises hydrocarbon oil and/or silicone oil.

8: The cosmetic composition of claim 7, wherein a total amount of hydrocarbon oil and silicone oil in the cosmetic composition is at least 15 % by weight relative to the weight of the cosmetic composition.

9: The cosmetic composition of any one of claims 1 to 8, wherein the alkali-containing composition further comprises at least one oxidative dye, at least one direct dye, or a mixture thereof.

10. The cosmetic composition of any one of claims 1 to 9, wherein the amount of the at least one surfactant in the alkali-containing composition is at least twice, preferably at least three times, of the amount of the at least one fatty material in the alkali-containing composition.

11 : The cosmetic composition of any one of claims 1 to 10, wherein the cosmetic composition is macroscopically translucent or macroscopically transparent.

12. A process comprising:

mixing (i) an alkali-containing composition comprising at least one alkaline agent, at least one fatty material, and at least one surfactant, wherein an amount in weight percent of the at least one surfactant in the alkaline-containing composition is greater than an amount in weight percent of the at least one fatty material in the alkali-containing composition, and (ii) a developer composition comprising at least one oxidizing agent, at least one fatty material, and optionally at least one surfactant, to prepare a cosmetic composition; and

applying the cosmetic composition to keratin fibers in an amount sufficient to change a color of the keratin fibers,

wherein: a total amount of fatty materials in the cosmetic composition is at least 10 % by weight relative to a weight of the cosmetic composition; and

a weight ratio of the total amount of surfactants in the cosmetic composition to the total weight of the fatty materials in the cosmetic composition is 0.7 or more.

13: The process of claim 12, wherein the keratin fibers are human hair.

14: A cosmetic kit comprising:

wherein:

a mixture of the alkali-containing composition and the developer composition forms a cosmetic composition;

a weight ratio of a total amount of surfactants in the cosmetic composition to the total amount of fatty materials in the cosmetic composition is 0.7 or more.