Abstract: The present invention relates to a composition for lightening keratin fibres, comprising at least one chemical oxidizing agent, at least one (bi)carbonate, at least one silicate and at least one amphoteric or zwitterionic compound, and to a process for lightening keratin fibres using this composition.

Abstract: The present invention relates to a process for lightening or simultaneously bleaching and dyeing keratin fibres, comprising the application to the keratin fibres of a composition comprising at least one chemical oxidizing agent, at least one (bi) carbonate, at least one silicate, at least one alcohol and optionally at least one colouring agent.

Abstract: The present invention relates to a process for lightening or for simultaneously bleaching and dyeing keratin fibres, comprising the application to the keratin fibres of a composition comprising at least one chemical oxidizing agent, at least one (bi)carbonate, at least one silicate, at least one organic acid and optionally at least one colouring agent.

Abstract: The present invention relates to a composition for lightening keratin fibres, comprising at least one chemical oxidizing agent, at least one (bi)carbonate, at least one silicate and at least one compound chosen from esters and/or amides and/or imines, and to a process for lightening keratin fibres using this composition.

Abstract: The present invention relates to a process for lightening keratin fibres, comprising the application to the keratin fibres of a composition comprising at least one chemical oxidizing agent, at least one bicarbonate and at least one silicate.

Abstract: The present invention relates to a process for lightening keratin fibres, comprising the application to the keratin fibres of a composition comprising at least one chemical oxidizing agent, at least one carbonate, at least one bicarbonate and at least one silicate.

Abstract: The present invention relates to a composition for the simultaneous bleaching and dyeing of keratin fibres, comprising at least one chemical oxidizing agent, at least one (bi)carbonate, at least one silicate and at least one oxidation dye, and also to a process for the simultaneous bleaching and dyeing of keratin fibres using this composition.

Abstract: The present invention relates to a composition for lightening keratin fibres, comprising at least one chemical oxidizing agent, ammonium carbonate and at least one silicate, and also to a process for lightening keratin fibres using this composition.

Abstract: The present invention relates to a composition for simultaneous bleaching and dyeing of keratin fibres, comprising at least one chemical oxidizing agent, at least one (bi)carbonate, at least one silicate and at least one direct dye, and also to a process for simultaneous bleaching and dyeing of keratin fibres employing this composition.

Abstract: The present invention relates to a composition for simultaneous bleaching and dyeing of keratin fibers, comprising one or more particular heterocyclic salts, and also to a process for simultaneous bleaching and dyeing of keratin fibers using this composition.

Abstract: The present invention relates to a process for dyeing keratin fibres, in particular human keratin fibres such as the hair, in one or more steps, comprising the application to said keratin fibres of a composition comprising one or more compounds of formula (I) and/or (II), and also to the use thereof for dyeing keratin fibres, and to a device: in which formula (I) or (II) R1, R3, R4, R5, R6, and n are as defined in the description. The compounds of formula (I) according to the invention can give powerful, chromatic and sparingly selective colourings with good colour build-up, which are resistant to the various attacking factors to which keratin fibres may be subjected, such as inclement weather, light, washing and perspiration.

Abstract: The present invention relates to a process for dyeing keratin fibres, in particular human keratin fibres such as the hair, in one or more steps, comprising the application to said keratin fibres of a composition comprising one or more compounds of formula (I) and/or (II), and also to the use thereof for dyeing keratin fibres, and to a device: in which formula (I) or (II) R1, R3, R4, R5, R6, and n are as defined in the description. The compounds of formula (I) according to the invention can give powerful, chromatic and sparingly selective colourings with good colour build-up, which are resistant to the various attacking factors to which keratin fibres may be subjected, such as inclement weather, light, washing and perspiration.

Abstract: The present invention relates to dissymmetric azomethine direct dyes of formula (I) and the leuco forms thereof of formula (II), and also to the use thereof for dyeing keratin fibres, in particular human keratin fibres such as the hair: in which formula (I) or (II) R1, R2, R3, R4, R5, R6, n and n? are as defined in the description. The compounds of formula (I) or (II) according to the invention can give powerful, chromatic and sparingly selective colourings with good colour build-up, which are resistant to the various attacking factors to which keratin fibres may be subjected, such as inclement weather, light, washing and perspiration.

Abstract: The present invention relates to novel cationic azomethine direct dyes of formula (I) and the leuco forms thereof of formula (II), and also to the use thereof for dyeing keratin fibres, in particular human keratin fibres such as the hair: (I) (II) in which formula (I) or (II) X1, X2, R1, R2, R3, R4, R5, R6, n and n? are as defined in the description. The compounds of formula (I) according to the invention can give powerful, chromatic and sparingly selective colourings with good colour build-up, which are resistant to the various attacking factors to which keratin fibres may be subjected, such as inclement weather, light, washing and perspiration.

Abstract: The subject of the present invention is symmetric or dissymetric azomethine direct dyes comprising at least one pyrazolopyridine unit of formula (I), a composition comprising said dyes, a process for treating keratin fibers using said dyes, a process for preparing these compounds, synthesis intermediates and a kit. In which formula (I) X, Y1, Y2, Z1, and R1 to R5 are as defined in the description.

Abstract: The present invention relates to dissymmetric azomethine direct dyes of formula (I) and the leuco forms thereof of formula (II), and also to the use thereof for dyeing keratin fibres, in particular human keratin fibres such as the hair: in which formula (I) or (II) R1, R2, R3, R4, R5, R6, n and n? are as defined in the description. The compounds of formula (I) or (II) according to the invention can give powerful, chromatic and sparingly selective colourings with good colour build-up, which are resistant to the various attacking factors to which keratin fibres may be subjected, such as inclement weather, light, washing and perspiration.

Abstract: The present invention relates to novel cationic azomethine direct dyes of formula (I) and the leuco forms thereof of formula (II), and also to the use thereof for dyeing keratin fibres, in particular human keratin fibres such as the hair: (I) (II) in which formula (I) or (II) X1, X2, R1, R2, R3, R4, R5, R6, n and n? are as defined in the description. The compounds of formula (I) according to the invention can give powerful, chromatic and sparingly selective colourings with good colour build-up, which are resistant to the various attacking factors to which keratin fibres may be subjected, such as inclement weather, light, washing and perspiration.

Abstract: The subject of the present invention is symmetric or dissymetric azomethine direct dyes comprising at least one pyrazolopyridine unit of formula (I), a composition comprising said dyes, a process for treating keratin fibers using said dyes, a process for preparing these compounds, synthesis intermediates and a kit. In which formula (I) X, Y1, Y2, Z1, and R1 to R5 are as defined in the description.

Abstract: The invention relates to a compound chosen from the compounds of formulae (I) and (II), the leucoforms thereof, the optical and geometrical isomers thereof and the tautomers thereof, and also the addition salts thereof with an acid or a base, and the solvates thereof. The invention also relates to the use of these particular compounds for dyeing keratin fibres.