Methods and compositions for blocking, inhibiting or reducing the perception of malodor by sensory receptors of a mammalian subject comprise an effective amount of a compound of Table I, a derivative thereof or any combination or mixture of such compounds. Methods for screening for such compositions in cell-based assays are provided.

The present invention describes compounds and uses thereof in applications relating to absorption of electromagnetic energy. Preferred compounds are double bond-containing compounds capable of absorbing electromagnetic radiation energy and having improved properties.

The present invention relates to a process for dyeing human keratin fibres, in which use is made of one or more metal catalysts and a composition (A) comprising: (a) at least 10% by weight of one or more fatty substances, (b) one or more oxidation bases of formula (I) or (II), the addition salts thereof, solvates thereof and mixtures thereof: Formula (I), Formula (II) (c) one or more chemical oxidizing agents other than atmospheric oxygen. The invention also relates to a multi-compartment device and to a composition comprising all of the above-mentioned ingredients. ##STR00001##

The present invention relates to a cosmetic and/or dermatological composition, comprising: a) at least one merocyanine corresponding to formula (I) below, and also the geometrical isomer forms, notably the E/E or E/Z geometrical isomer forms, thereof:

##STR00001## b) ascorbic acid and/or a derivative thereof.

The present invention also relates to a non-therapeutic cosmetic process for caring for and/or making up a keratin material, comprising the application, to the surface of said keratin material, of at least one composition as defined above.

A dyeing composition for keratin fibers, including one or more hair dyes, and one or more salts according to the following structure X.sub.3PO.sub.4, where X is a metal, and where a total concentration of water is 10% by weight or less, calculated to a total weight of the dyeing composition. A method for dyeing keratin fibers, including mixing the dyeing composition with an aqueous composition containing one or more oxidizing agents to yield a ready-to-use composition having a pH in a range of 7 to 12, applying the ready-to-use composition onto keratin fibers and leaving it for a time period in a range of 1 min to 60 min, and optionally rinsing-off the keratin fibers and optionally drying the keratin fibers.

The subject of the present application is an agent for the oxidative dyeing of keratinous fibers, in particular human hair, which contains the coupling oxidation dye precursors 2-(1,3-benzodioxol-5-ylamino)ethanol and 1-phenyl-3-methylpyrazol-5-one in combination with at least one oxidation base.

The invention relates to a composition comprising at least one oxidation coupler chosen from hydroxyethyl-3,4-methylenedioxyaniline of formula (I), one of its addition salts, its solvates and/or the solvates of its salts, at least one oxidation coupler chosen from 2-amino-5-ethylphenol of formula (II), one of its addition salts, its solvates and/or the solvates of its salts, and at least one oxyethylenated C.sub.8-C.sub.30 fatty acid ester of sorbitan having from 1 to 10 ethylene oxide units. The invention also relates to a process for N dyeing keratin fibres, preferably the hair, comprising the application of the composition to said keratin fibres.

The invention relates to a composition comprising at least one oxidation coupler chosen from hydroxyethyl-3,4-methylenedioxyaniline of formula (I), one of its addition salts, its solvates and/or the solvates of its salts, at least one oxidation coupler chosen from 2-amino-5-ethylphenol of formula (II), one of its addition salts, its solvates and/or the solvates of its salts, and at least one alkyl(poly)glycoside. The invention also relates to a process for dyeing keratin fibres, preferably the hair, comprising the application of the composition to said keratin fibres.

The invention relates to a composition comprising at least one oxidation dyeing base chosen from 2--hydroxypropyl-para-phenylenediamine of formula (I), an addition salt thereof, solvates thereof and/or solvates of the salts thereof, at least one oxidation dyeing coupler chosen from (i) 2-amino-4-hydroxyethylaminoanisole of formula (II), an addition salt thereof, solvates thereof and/or solvates of the salts thereof and (ii) 2-amino-5-ethylphenol of formula (III), an addition salt thereof, solvates thereof and/or solvates of the salts thereof, at least one amphoteric or zwitterionic surfactant and at least one solid fatty substance.

The invention also relates to a process for dyeing keratin fibers, preferably the hair, which comprises the application of the composition to said keratin fibers.

An oxidative dyeing composition for keratin fibers, containing 1,4-diamino-2-methoxymethyl-benzene, and/or a salt thereof, and one or more alkalizing agents selected from a metal salt of silicate, metasilicate, disilicate, and phosphate. Where a total concentration of water is 10% by weight or less, calculated to a total weight of the oxidative dyeing composition.