Abstract: Disclosed herein is a ready-to-use cosmetic composition for relaxing keratin fibers comprising, as relaxing agent, at least one secondary or tertiary amine. Further disclosed herein are a kit comprising at least two compartments to be placed in contact to form the ready-to-use composition, and a process using this composition.

Abstract: The disclosure provides ready-to-use cosmetic compositions for relaxing keratin fibers in a cosmetically acceptable medium free of polyhydroxylated alkane, comprising, as a relaxing agent, a base not belonging to the hydroxide family. The disclosure also provides kits comprising compartments to be placed in contact to form the ready-to-use compositions, and processes using these compositions.

Abstract: The disclosure relates to ready-to-use cosmetic compositions for permanently shaping keratin fibers comprising, as a permanent hair-shaping active agent, an imine not belonging to the hydroxide family. The disclosure also provides kits comprising compartments to be placed in contact to form the ready-to-use compositions, and processes using these compositions.

Abstract: The disclosure provides ready-to-use cosmetic compositions for permanently shaping keratin fibers comprising, as permanent hair-shaping active agent, a base not belonging to the hydroxide family. The disclosure also provides kits comprising compartments to be placed in contact to form the ready-to-use compositions, and processes using these compositions.

Abstract: The invention concerns a composition for dyeing keratin fibers, in particular human keratin fibers such as hair comprising at least one pyrazolin-4,5-dione of formula (I) and at least one aromatic primary amine. Said composition enables the dyeing of keratin fibers without an oxidizing agent in shades which are strong, varied, resistant and less selective than those of prior art. The invention also concerns dyeing methods and devices using said composition.

Abstract: The invention relates to novel compositions for the oxidation dyeing of keratin fibers, comprising at least one specific diaminopyrazole derivative, to the dyeing process using this composition, to novel diaminopyrazole derivatives and to a process for their preparation.

Abstract: The present invention relates to a composition for dyeing keratin fibres, in particular human hair, containing, in a medium which is suitable for dyeing: as coupler, at least one compound of formula: or one of the addition salts thereof with an acid, in which: R2 denotes, in particular, hydrogen, halogen, alkoxy, aryloxy, acetylamido, etc. R1 and R3, which are independent, denote, in, particular: hydrogen, alkyl, aryl, a heterocycle, etc. it being understood that when R2 and R1 simultaneously represent a hydrogen atom, then R1 is other than a hydrogen atom, a C1-C5 alkyl radical or a phenyl radical; and at least one oxidation base.

Abstract: The invention relates to novel compositions for the oxidation dyeing of keratin fibers, comprising at least one specific diaminopyrazole derivative, to the dyeing process using this composition, to novel diaminopyrazole derivatives and to a process for their preparation.

Abstract: The invention concerns a composition for dyeing keratin fibres, in particular human keratin fibres such as hair comprising at least one pyrazolin-4,5-dione of formula (I) and at least one aromatic primary amine. Said composition enables the dyeing of keratin fibres without an oxidising agent in shades which are strong, varied, resistant and less selective than those of prior art. The invention also concerns dyeing methods and devices using said composition.

Abstract: The invention concerns a composition for dyeing keratin fibres, in particular human keratin fibres such as hair comprising at least one pyrazolin-4,5-dione of formula (I) and at least one aromatic primary amine. Said composition enables the dyeing of keratin fibres without an oxidising agent in shades which are strong, varied, resistant and less selective than those of prior art. The invention also concerns dyeing methods and devices using said composition.

Abstract: The invention concerns a method for treating hair keratin fibers to provide them with new appropriate properties, comprising the following steps: reducing the sulphur bonds of hair keratin to generate only at the surface of the fibers at a depth less than 10 &mgr;m. reactive sites and in fixing covalently on said reactive sites at least one active compound for providing the hair keratin fibers with new appropriate properties, said active compound containing at least a reactive function capable of reacting with said reactive sites formed at the keratin fiber surface. This method is applicable to the treatment of fibrous or non-fibrous keratin substances of human or animal origin.

Abstract: The present invention relates to an anti-wrinkle composition containing a dispersion of a polymer system comprising at least one polymer of natural origin, and to the use of this polymer system as a tensioning agent in a cosmetic or dermatological composition. The polymer used must characteristically have a molecular weight of greater than 670,000 daltons and the polymer system obtained must be capable of forming a steam-permeable film, it must have a Young's modulus ranging from 108 to 9×109 N/m2 and it must produce, at a concentration of 7%, a greater than 1.5% retraction of isolated stratum corneum at 30° C. and at a relative humidity of 40%. The composition obtained is used in particular for the immediate treatment of wrinkles and fine lines on the skin.

Abstract: The invention relates to novel compositions for the oxidation dyeing of keratin fibers, comprising at least one specific diaminopyrazole derivative, to the dyeing process using this composition, to novel diaminopyrazole derivatives and to a process for their preparation.

Abstract: The present invention relates to a composition for dyeing keratin fibers, in particular human hair, containing, in a medium which is suitable for dyeing: as coupler, at least one compound of formula: or one of the addition salts with an acid, with R1 denotes, in particular, hydrogen, alkyl, aryl, a heterocycle, halogen, R2 denotes, in particular, hydrogen, halogen, alkoxy, aryloxy, acyloxy, arylthio, alkylthio, . . . R3 has the same meanings as those for R1, Za and Zb, which are different, denote C═O or CR4, with R4 having the same meanings as R1; and at least one oxidation base.

Abstract: The invention concerns a composition for dyeing keratin fibres, in particular human keratin fibres such as hair comprising at least one pyrazolin-4,5-dione of formula (I) and at least one aromatic primary amine. Said composition enables R the dyeing of keratin fibres without an oxidising agent in shades which are strong, varied, resistant and less selective than those of prior art. The invention also concerns dyeing methods and devices using said composition.

Abstract: The invention concerns a method for treating hair keratin fibers to provide them with new appropriate properties, comprising the following steps: reducing the sulphur bonds of hair keratin to generate only at the surface of the fibers at a depth less than 10 &mgr;m. reactive sites and in fixing covalently on said reactive sites at least one active compound for providing the hair keratin fibers with new appropriate properties, said active compound containing at least a reactive function capable of reacting with said reactive sites formed at the keratin fiber surface. This method is applicable to the treatment of fibrous or non-fibrous keratin substances of human or animal origin.

Abstract: The present invention relates to novel cosmetic compositions, in particular for coloring the skin and/or the hair, comprising, in a cosmetically acceptable support, at least one 4,5-pyrazolinedione. The invention also relates to novel 4,5-pyrazolinediones, to processes for their preparation and to their uses in the cosmetics field.

Abstract: The present invention relates to a composition for dyeing keratinous fibres, especially human hair, which in a medium appropriate for dyeing comprises:

Abstract: A compostion for the dyeing of keratinous fibres comprising, in a medium appropriate for dyeing keratinous fiber contains: as coupler, at least one compound of formula: in which R1 denotes in particular hydrogen, halogen, aryloxy, alkoxy, acyloxy, arylthio, alkylthio, acetamido; an NRIIIRIV radical with RIII and RIV representing a C1-C4 alkyl, and the like; Za, Zb, and Zc represent, independently of one another, a nitrogen atom or else a carbon atom carrying an R2, R3 or R4 radical; provided that: when Za denotes a carbon atom carrying an R2 radical, Zb represents a nitrogen atom and Zc denotes a carbon atom carrying an R3 radical; when Za denotes a nitrogen atom, Zb represents a carbon atom carrying an R4 radical and Zc dentoes a nitrogen atom; R2, R3 or R4=H, C1-4 alkyl, aryl; n is 1 or 2: and at least one oxidation base.

Abstract: The invention relates to novel compositions for the oxidation dyeing of keratin fibers, comprising at least one specific diaminopyrazole derivative, to the dyeing process using this composition, to novel diaminopyrazole derivatives and to a process for their preparation.