Abstract: Present invention relates to an oxidizing composition for keratin fibers especially for human hair with improved lightening effect and therefore, improved colouring and bleaching effects are easily achieved of the compositions applied after mixing with the said composition. Present inventors have surprisingly found out that a composition comprising at least one oxidizing agent and additionally at least one alkalizing agent, at least one carbonate source and at least one urea derivative delivers an improved and homogeneous lightening performance and leaves hair in an improved cosmetically acceptable conditioned status.

Abstract: Present invention relates to an oxidizing composition for keratin fibers especially for human hair with improved lightening effect and therefore, improved colouring and bleaching effects are easily achieved of the compositions applied after mixing with the said composition. Present inventors have surprisingly found out that a composition comprising at least one oxidizing agent and additionally at least one alkalizing agent, at least one carbonate source and at least one urea derivative delivers an improved and homogeneous lightening performance and leaves hair in an improved cosmetically acceptable conditioned status.

Abstract: Present invention relates to a coloring composition for keratin fibers especially for human hair with exceptionally improved color and shade stability. Accordingly, the first object of the present invention is a coloring composition for keratin fibres especially human hair comprising, in a cosmetically acceptable medium, at least one oxidative dyestuff precursor, 1,3-bis(2,4-diaminophenoxy) propane and/or its respective salts as a coupling agent and at least one direct dye. In an especially preferred from of the present invention the coloring compositions are substantially free from mono cyclic m-phenylenediamine coupling agent. With the term “mono cyclic m-phenylenediamine”, it is meant that the compound comprises only one cyclic group, preferably a benzene ring, in its molecule.

Abstract: Present invention relates to a colouring composition for keratin fibres especially for human hair with exceptionally improved colour and shade stability. Accordingly, the first object of the present invention is a colouring composition for keratin fibres especially human hair comprising, in a cosmetically acceptable medium, at least one oxidative dyestuff precursor, 1,3-bis(2,4-diaminophenoxy) propane and/or its respective salts as a coupling agent and at least one direct dye. In an especially preferred from of the present invention the colouring compositions are substantially free from mono cyclic m-phenylenediamine coupling agent. With the term “mono cyclic m-phenylenediamine”, it is meant that the compound comprises only one cyclic group, preferably a benzene ring, in its molecule.

Abstract: The present invention relates to bleaching composition for keratin fibres, especially human hair, comprising at least one compound with bleaching and/or highlighting effect wherein a water soluble protein selected from water soluble silk protein, water soluble silk protein hydrolysate and their derivatives is added. The object of the present invention is aqueous composition for bleaching hair comprising three parts which are mixed prior to application onto hair and which are a—a substantially anhydrous composition comprising at least one compound with bleaching effect, b—an aqueous composition comprising at least one oxidizing agent, and c—a composition comprising at least one cationic and/or cationizable compound.

Abstract: The present invention relates to bleaching composition for keratin fibres, especially human hair, comprising at least one compound with bleaching and/or highlighting effect wherein a water soluble protein selected from water soluble silk protein, water soluble silk protein hydrolysate and their derivatives is added. The object of the present invention is aqueous composition for bleaching hair comprising three parts which are mixed prior to application onto hair and which are a—a substantially anhydrous composition comprising at least one compound with bleaching effect, b—an aqueous composition comprising at least one oxidizing agent, and c—a composition comprising at least one compound selected from water soluble silk protein, water soluble silk protein hydrolysate and of their derivatives.

Abstract: The present invention relates to bleaching composition for keratin fibres, especially human hair, comprising at least one compound with bleaching and/or highlighting effect and a calcium salt. Further object of the present invention is the use of at least one calcium salt in a bleaching and/or highlighting composition for keratin fibres, especially for human hair, comprising at least one compound with bleaching and/or highlighting effect for preventing temperature increase going above 40° C., preferably above 45° C. and more preferably above 50° C. in a period of at least 60 min after mixing water free bleaching and/or highlighting composition and oxidizing lotion.

Abstract: The present invention refers to dyestuffs of the general Formula (I) wherein R, X, Y and Z are defined as given in claim 1, dyestuff mixtures and hair dye compositions comprising them, as well as a process for coloring hair.

Abstract: Provided is a hair dye composition containing a dissociative direct dye (1): (wherein Ar represents an aromatic group or heterocyclic aromatic group which may have a substituent, Ar? represents an aromatic group which may be substituted by an alkyl group or an electron drawing group, or a specific heterocyclic aromatic group, and W represents an electron drawing group); or salt thereof.

Abstract: A hair dye composition containing an azo dye (1) or a salt thereof, (wherein R1 to R4 represents H, aliphatic hydrocarbon group, aryl group, halogen atom, acyl group, cyano group, acylamino group, or the like, wherein R1 and R2, and/or R3 and R4 may be coupled to form a 5- or 6-membered ring; X represents C or N, with the proviso that when X represents C, n stands for 1, and when X represents N, n stands for 0; A1, A2, A3 and A4 each represents N or represents C substituted by Y or having H, with the proviso that at least one of A1, A2, A3 and A4 is a nitrogen atom; and Y represents a substituent with the proviso that m stands for an integer from 0 to 3).

Abstract: The present invention refers to hair dye compositions comprising one or more dyestuffs of the general formula (I) wherein R, X, Y and Z are defined as given in claim 1 and a process for colouring hair.

Abstract: The present invention refers to dyestuffs of the general Formula (I) wherein R, X, Y and Z are defined as given in claim 1, dyestuff mixtures and hair dye compositions comprising them, as well as a process for colouring hair.

Abstract: A hair dye composition containing an azo dye (1) or a salt thereof, (wherein R1 to R4 represents H, aliphatic hydrocarbon group, aryl group, halogen atom, acyl group, cyano group, acylamino group, or the like, wherein R1 and R2, and/or R3 and R4 may be coupled to form a 5- or 6-membered ring; X represents C or N, with the proviso that when X represents C, n stands for 1, and when X represents N, n stands for 0; A1, A2, A3 and A4 each represents N or represents C substituted by Y or having H, with the proviso that at least one of A1, A2, A3 and A4 is a nitrogen atom; and Y represents a substituent with the proviso that m stands for an integer from 0 to 3).

Abstract: Provided is a hair dye composition containing a dissociative direct dye (1): (wherein Ar represents an aromatic group or heterocyclic aromatic group which may have a substituent, Ar? represents an aromatic group which may be substituted by an alkyl group or an electron drawing group, or a specific heterocyclic aromatic group, and W represents an electron drawing group); or salt thereof.

Abstract: A hair dye composition containing an azo dye (1) or a salt thereof: wherein R represents a coupler moiety, R1 and R3 each independently represent —SO3M, —SO2NR4R5 or a hydrogen atom, R2, R4 and R5 each independently represent a hydrogen atom or a substituent, and M represents a hydrogen atom, metal atom or ammonium, with a proviso that R1 and R3 are not hydrogen atoms at the same time.

Abstract: A hair dye composition containing an azo dye (1) or a salt thereof wherein R represents a coupler moiety, R1 and R3 each independently represent —SO3M, —SO2NR4R5 or a hydrogen atom, R2, R4 and R5 each independently represent a hydrogen atom or a substituent, and M represents a hydrogen atom, metal atom or ammonium, with a proviso that R1 and R3 are not hydrogen atoms at the same time.

Abstract: The present invention relates to a method to achieve a reversible change of the colour of hair dyed with an azo dye wherein the change of the colour can be effected by, for example, the salonist or the consumer in a simple manner. The colour of the hair thus dyed may be changed simply by treating the dyed hair with an acid treatment composition at any time after the first dyeing treatment. If desired by the consumer, the colour may be returned to substantially the original post dye colour by treating the hair further with an alkaline treatment composition.

Abstract: The present invention is directed to a hair dyeing composition comprising at least one azo dye of the following general formula (1): A—N=N—B??(1) where A=monovalent, optionally substituted heterocyclic group binding via the carbon atom to the azo group, that does not contain carboxy (—CO2H) or sulfo groups (SO3H) or quaternary ammonium groups and B=heterocyclic, aromatic or alkyl group containing a dissociative proton and, which is free of carboxy (—CO2H) or sulfo groups (—SO3H) or quaternary ammonium groups. Additionally, the present invention describes a method of dyeing human or animal hair by using such a dye and the use of this direct azo dye for dyeing human or animal hair. The use of this direct azo dye can impart the hair with an extremely vivid colour and has a less colour fade over the time.

Abstract: The present invention is directed to a hair dyeing composition containing a dissociative azo dye of the following general formula (1) A-N?N—B??(1) wherein “A” represents a phenyl or naphthyl group which may be substitued; “B” represents an atomic group containing a dissociative proton, with the proviso “A” and “B” are free of sulfo, carboxyl and quaternary ammonium groups. Additionally, the present invention describes a method of dyeing human or animal hair by using such a dye and the use of this direct azo dye for dyeing human or animal hair. The use of this direct azo dye can impart the hair with an extremely vivid color and has less color fading over time.

Abstract: Provided is a hair dye composition containing a dissociative direct dye represented by the following formula (1): wherein, R1 to R4 each represents H or substituent, X represents OH or —NHSO2R5 (R5 representing an alkyl, aryl or heterocyclic group) and A represents a group of any one of formulas (Cp-1) through (Cp-12). The hair dye composition of the present invention is capable of strongly dyeing the hair with a vivid color tone without causing decomposition of the dye during the dyeing process, exhibits excellent resistance against sunlight, hair washing, perspiration, friction and heat, has a high stability against an alkali agent and an oxidizing agent, has a high dyeing property, and shows less color fade over time.