Abstract: Use of a composition comprising hydrogen peroxide in a cosmetic vehicle allows gentle discoloring of permanently colored, keratinous fibers which have been colored with a specific coloring composition. The coloring composition used for coloring the fibers comprises, in a cosmetic vehicle, a combination of at least one CH-acidic compound with at least one reactive carbonyl compound. The discoloring composition contains preferably between 0% and 15% by weight of hydrogen peroxide and has the effect, in particular in a working time of 5 to 20 minutes even without the use of organic peroxo compounds and in the absence of inorganic persalts, of effective color removal with simultaneous gentle treatment of the fibers.

Abstract: Use of a composition comprising hydrogen peroxide in a cosmetic vehicle allows gentle decolouring of permanently coloured, keratinous fibers which have been coloured with a specific colouring composition. The colouring composition used for colouring the fibres comprises, in a cosmetic vehicle, a combination of at least one CH-acidic compound with at least one reactive carbonyl compound. The decolouring composition contains preferably between 0% and 15% by weight of hydrogen peroxide and has the effect, in particular in a working time of 5 to 20 minutes even without the use of organic peroxo compounds and in the absence of inorganic persalts, of effective colour removal with simultaneous gentle treatment of the fibres.

Abstract: Agents for dyeing and/or lightening keratin fibers, in particular human hair, containing, relative to the weight thereof, 0.001 to 15 wt. % of at least one aldehyde of the formula (I): wherein X represents —CH(R2)—SO2—Y—R1, —CR3R4R5, or wherein Y represents —CH(CHO)— or —CH2— or a chemical bond, and wherein each of R1, R2, R3, R4, R5, R6, R7, R8, R9, and R10 independently represents —H or —CN or —F or —Cl or —Br or —I or —CHO or —NH2 or —NO2 or —CF3 or —CCl3 or —CF2CF3 or —CCl2CCl3 or an optionally substituted (C1-C6) alkyl group or a hydroxyalkyl group or a polyhydroxyalkyl group or an optionally substituted (C1-C6) alkylene group, and wherein the agent contains no oxidation dye precursors of developer and coupler type.

Abstract: The invention relates to an agent for dying fibers comprising keratin, particularly human hair, the agent comprising at least one compound of the formula: together with at least one CH-acidic compound. The invention also relates to methods for shading oxidation dyed fibers, methods for freshening up fibers, methods for making an agent for dyeing fibers and to various compositions.

Abstract: The invention relates to an agent for dying fibers comprising keratin, particularly human hair, the agent comprising at least one compound of the formula: together with at least one CH-acidic compound. The invention also relates to methods for shading oxidation dyed fibers, methods for freshening up fibers, methods for making an agent for dyeing fibers and to various compositions.

Abstract: Compositions suitable for treating keratinic fibers, in particular human hair, are disclosed, which compositions comprise: (i) at least one component selected from the group consisting of salt compounds of general formula I, enamine counterparts of salt compounds of general formula I, and mixtures thereof: Where each Me represents a methyl group, R represents a substituent selected from the group consisting of an allyl group, a hydroxy-(C2-6)-alkyl group, a benzyl group, and substituted benzyl groups, and X? represents a physiologically compatible anion; and (ii) at least one aldehyde selected from the group consisting of 4-hydroxy-3-methoxybenzaldehyde, 3,5-dimethoxy-4-hydroxybenzaldehyde, 4-hydroxy-1-naphthaldehyde, 4-hydroxy-2-methoxybenzaldehyde, 3,4-dihydroxy-5-methoxybenzaldehyde, 3,4,5-trihydroxybenzaldehyde, 3,4-dibromo-4-hydroxybenzaldehyde, 4-hydroxy-3-nitrobenzaldehyde, 3-bromo-4-hydroxybenzaldehyde, 4-hydroxy-3-methylbenzaldehyde, 3,5-dimethyl-4-hydroxy-benzaldehyde, 5-bromo-4-hydroxy-3-methox

Abstract: Fiber-coloring components for dye compositions and methods for using the same, wherein the compositions comprise: (i) at least one component A comprising a compound selected from imidazo[1,5-a]pyrimidinium derivatives of general formula I, enamine counterparts of such derivatives, and mixtures thereof: and (ii) at least one component B comprising a reactive carbonyl compound.

Abstract: A coloring system with special CH-acidic compounds in combination with selected aldehydes as reactive carbonyl compound is suitable for obtaining a changeable color. The colors of the fibers colored with this combination are changed and restored again in a pH-controlled manner using appropriate cosmetic compositions.

Abstract: Fiber-coloring components for dye compositions and methods for using the same, wherein the compositions comprise: (i) at least one component A comprising a compound selected from imidazo[1,5-a]pyrimidinium derivatives of general formula I, enamine counterparts of such derivatives, and mixtures thereof: and (ii) at least one component B comprising a reactive carbonyl compound.

Abstract: An agent for dyeing keratin-containing fibers, especially human hair, is comprised of a cosmetic carrier, and (A) at least one compound of Formula I, wherein each of R1, R2 and R3 is independently a hydrogen atom, a halogen atom, a C1-C6 alkyl group, a C2-C6 alkenyl group, a hydroxyl group, a C1-C6 alkoxy group, a C1-C6 hydroxyalkyl group, a C2-C6 polyhydroxyalkyl group, a hydroxy C1-C6 alkyloxy group, a sulfonyl group, a carboxyl group, a C1-C6 alkoxycarbonyl group, a hydroxy C2-C6 alkyloxycarbonyl group, a sulfonic acid group, a sulfonamido group, a sulfonamide group, a C2-C6 acyl group, a formyl group, a nitro group, a carbamoyl group —C(O)—NR4R5, or a —(CH2)nNR6R7 group wherein each of R4, R5, R6 and R7 is independently a hydrogen atom, a C1-C6 alkyl group or a C2-C6 hydroxyalkyl group; and n is number from 0 to 6, wherein R1 and R2 can form a 5- or 6-membered aromatic or heteroaromatic ring; and (B) at least one CH-acidic compound.

Abstract: An agent for dyeing keratin-containing fibers, especially human hair, is comprised of a cosmetic carrier, and (A) at least one compound of Formula I, wherein each of R1, R2 and R3 is independently a hydrogen atom, a halogen atom, a C1-C6 alkyl group, a C2-C6 alkenyl group, a hydroxyl group, a C1-C6 alkoxy group, a C1-C6 hydroxyalkyl group, a C2-C6 polyhydroxyalkyl group, a hydroxy C1-C6 alkyloxy group, a sulfonyl group, a carboxyl group, a C1-C6 alkoxycarbonyl group, a hydroxy C2-C6 alkyloxycarbonyl group, a sulfonic acid group, a sulfonamido group, a sulfonamide group, a C2-C6 acyl group, a formyl group, a nitro group, a carbamoyl group —C(O)—NR4R5, or a —(CH2)nNR6R7 group wherein each of R4, R5, R6 and R7 is independently a hydrogen atom, a C1-C6 alkyl group or a C2-C6 hydroxyalkyl group; and n is number from 0 to 6, wherein R1 and R2 can form a 5- or 6-membered aromatic or heteroaromatic ring; and (B) at least one CH-acidic compound.

Abstract: Compositions suitable for treating keratinic fibers, in particular human hair, are disclosed, which compositions comprise: (i) at least one component selected from the group consisting of salt compounds of general formula I, enamine counterparts of salt compounds of general formula I, and mixtures thereof: wherein each Me represents a methyl group, R represents a substituent selected from the group consisting of an allyl group, a hydroxy-(C2-6)-alkyl group, a benzyl group, and substituted benzyl groups, and X? represents a physiologically compatible anion; and (ii) at least one aldehyde selected from the group consisting of 4-hydroxy-3-methoxybenzaldehyde, 3,5-dimethoxy-4-hydroxybenzaldehyde, 4-hydroxy-1-naphthaldehyde, 4-hydroxy-2-methoxybenzaldehyde, 3,4-dihydroxy-5-methoxybenzaldehyde, 3,4,5-tri-hydroxybenzaldehyde, 3,5-dibromo-4-hydroxybenzaldehyde, 4-hydroxy-3-nitrobenzaldehyde, 3-bromo-4-hydroxybenzaldehyde, 4-hydroxy-3-methylbenzaldehyde, 3,5-dimethyl-4-hydroxybenzaldehyde, 5-bromo-4-hydroxy-3-met

Abstract: The invention relates to agents for coloring fibers containing keratin, in particular, human hair, which comprise selected cationic, CH-acidic heterocycles according to formula I in which A, R1, R2 and X? are as defined in the application, in combination with reactive carbonyl compounds, to the use of this combination in agents for coloring fibers containing keratin, for freshening up the color or nuancing fibers containing keratin which have already been colored, and to a method of coloring fibers containing keratin, in particular, human hair.

Abstract: The invention relates to agents for coloring fibers containing keratin, in particular, human hair, which comprise selected cationic, CH-acidic heterocycles according to formula I in which A, R1, R2 and X? are as defined in the application, in combination with reactive carbonyl compounds, to the use of this combination in agents for coloring fibers containing keratin, for freshening up the color or nuancing fibers containing keratin which have already been colored, and to a method of coloring fibers containing keratin, in particular, human hair.

Abstract: A composition for dyeing keratin-containing fibers, particularly human hair, comprising 1,2-dihydropyrimidinium derivatives in combination with reactive carbonyl compounds and methods of employing this combination for dyeing keratin-containing fibers, for color restoration or shading keratin-containing fibers that are already dyed.

Abstract: An agent for dyeing keratin-containing fibers, in particular, human hair, to give the fibers fashionable bright colors. The agent comprises A) an oxidizing agent, B) a CH-acidic compound and C) a reactive carbonyl compound. The invention also includes a process for dyeing keratin-containing fibers with the agent.

Abstract: A composition for dyeing keratin-containing fibers, particularly human hair, comprising 1,2-dihydropyrimidinium derivatives in combination with reactive carbonyl compounds and methods of employing this combination for dyeing keratin-containing fibers, for color restoration or shading keratin-containing fibers that are already dyed.

Abstract: A coloring composition and a method of coloring keratin-containing fibers are provided. The coloring composition contains a mixture of and/or a reaction product of at least one aromatic aldehyde or ketone and at least one CH-active compound. In the method of the present invention, the aromatic aldehyde or ketone and the CH-active compound may be applied to keratin-containing fibers simultaneously or successively.

Abstract: A coloring composition and a method of coloring keratin-containing fibers are provided. The coloring composition contains a mixture of and/or a reaction product of at least one aromatic aldehyde or ketone and at least one CH-active compound. In the method of the present invention, the aromatic aldehyde or ketone and the CH-active compound may be applied to keratin-containing fibers simultaneously or successively.

Abstract: A coloring composition and a method of coloring keratin-containing fibers are provided. The coloring composition contains a mixture of and/or a reaction product of at least one heteroaromatic aldehyde or ketone and at least one aromatic and/or heteroaromatic nitroamine. In the method of the present invention, the heteroaromatic aldehyde or ketone and the nitroamine may be applied to keratin-containing fibers simultaneously or successively.